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Adenowo gbadebo lexican investments limited reliable forex indicator honestly

Adenowo gbadebo lexican investments limited

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Saw things I really would never want to see on my life. A good and conducive hospitable business place. A very popular and hotel located along Obafemi Awolowo way Ikeja, just 10min. A must visit for all, they have bureau de change, Chinese restaurant, swimming pool, car hire services, ATM and a Bank within the Hotel, Conference Rooms and Mini marts for quick shop.

Well secured and the staffs are very professional. The reception is warm. The accommodation is above average. The facilities are average. Lovely place. Parking space and very nice swimming pool. This place should be given at least a decent face lift. Quite busy place. The Murtala Mohammed local wing can make do with more organization and signage clearly identifying the Airline Stations and boarding gates etc. This hotel gives more than hospitality, they also give you a feel of the yoruba culture.

Nigerian government really worked on the road very well. Nice Hotel, reasonable prices. New rooms added in Rooms are clean and staff are friendly and welcoming. Parking available. Breakfast buffet was ok. Keep up the good work. Weather and everything as at this evening is cool because of the attempted rain shower we had at the early hour of the evening.

I like the Hotel and everything , But I want to suggest to management to consider their complimentary packages, especially in a room where 2 people occupied only 1 person is allowed to take breakfast. Meanwhile is just a breakfast where one can not eat plenty. Thanks for your hospitality John Addo Edmark International.

Limited food and drink options at the poolside bar. Nice amenities. The poolside is great for outdoor activities. La Mango Restaurant and Bar. I visited the Bureau De Change Office to make an enquiry and they attended to me very well and promptly. They are also very reliable. Closeer to the airport, ShopRite, and market s.

This is a five star hotel where most of modern hotel facilities are readily available. This hotel keeps reinventing itself. It has just been renovated and modernised. It is a good and secure place to lodge. The facilities are old.

And the lifeguard at the pool is hostile. Made use of the swimming facility and hung out with some friends. I must say the Suya has me going over and over again. Its superb! It has an Olympic size pool but I feel with a proper management keen on upgrade, the hotel can be better than it is.

It has Chinese restaurant the place is best I think. It can be better than what is now the management just needs to invest more. This hotel has been long existing. It is close to the airport but amenities are old. Well by too bad the environment need finishing touches not well tarred road thou rooms are neat. Went to airport hotel for a workshop. Good experience. The hotel needs major facelift, old hotel but still decent.

The best hotel in lagos with the best hospitality The hotel is extra-ordinary. Spacious rooms. Old but well maintained and neat. Courteous staff. Lagos Airport Hotel is a great place to be. Great ambience everytime. Is nice place with a very large pool a large car park with good rooms.

The environment is OK but the room I was priveledged to enter did not meet my expectations. Old but Gold. Really nice place to relax. I enjoyed their larger than Olympic size pool. Did I remember to say it was relatively cheap too? Oh yea it was.. Good hotel and conference centre. I attended a 1 day workshop on procurement community engagements. Swimming pool and Good food served. This is an old hotel and very little has been done to update rooms and facilities.

Does not look like a modern hotel. They need to do better. Very nice hotel. Affordable with free breakfast. Nice place to be with good recreation center. Very big swimming pool and spacious rooms. Untidy rooms and environment in general. However, the gym instructor was great. Good for the rates,their rates are affordable,just before Allen round-about,they have large conference room,i wrote an ICAN exams there years back.

Not the best I have seen but still ok it nice to be there. A nice place to be, centrally located at the heart of Ikeja in lagos State. Placed in good location well secured and services. So fascinating and outstanding at Lagos airport hotel Attended functions a couple of times at the event halls.

Good functioning facilities and air conditioning units for comfort of guests. Large car parking space but usually congested. Beautiful site to behold Cool and serene place for refreshment and accommodations. Serene environment, lovely place to be,lots of halls for event. Standard size wimming pool. A nice place though some rooms could do with some re-decoration.

The Lagos Airport Hotel is indeed a survivor. It used to be a part of a group of Hotels, referred to as NHL. Nigerian Hotels Limited. They were spread alond the entire states of Nigeria. Most of these Hotels are moribund today except for very few like the Lagos Airport Hotel, that is why I call it a survivor. It is still in business along Awolowo way, Ikeja and is just about 10 minutes drive from the Lagos Airport and 20 minutes from the Lagos International Airport.

Not bad. Seems to be better than some other hotels. Massive construction going on, will be world class when completed. I only went there for swimming. Gate fare Serene environment and a good place for a quiet evening.

Situated in Awolowo way ikeja near Allen roundabout. A very nice place to Lodge with a nice conference Hall. Orderly and much more improvement on departure and arrival of travelers. Nice hospitality, nice pool and lovely workers. Affordable and comfortable for meetings. Have never stayed at the hotel but attended meetings there several times..

Delicious delicacies and friendly staffs but old structured facilities. A good hotel, the change currencies at the gate and the got a wema bank in the premises. The hotel environment is good and conducive. The services is good. The bed in the room are quiet good. Used the swimming pool;huge,Olympic sized and not crowded,so plenty of room and plenty of swim. However,changing rooms far inadequate and rather substandard-just a glorified small space,not enough for cubicles.

No running water,even in showers,which were just by the pool,none in changing room. Of course,the rest rooms. Environment is not attractive and it not well maintained. Nice hotel. Very close to the airport and a good customer service both on and offline. Slightly run down facilities. Interesting location, though. An old time hotel that is still maintaining a good standard. Just make sure you have data because they is no internet at the airport.

Very lively vicinity with great infrastructures, nice gymnasium, world class swimming pool, very nice Chinese Restaurant, massive car park and a very welcoming reception. Hotel is located is a really good part of Ikeja, 10 minutes from the airport. Facilities here are rather ageing and not well renovated. The swimming pool there is wide enough and deep enough. Love it. As a 3 star hotel built 50 years ago this is good for the discerning lodger.

The swimming pool is Olympic standard, the rooms are big, has an ATM and a bank just at the gate, nice service, good security and a big conference hall but needs renovation. Quite an exciting place, old looking but has the capacity to blossom n turn its current asset to a huge fortune if well managed. Anyways a fair place to lodge.

Lagos Airport Hotel is a cool place, located just beside a major road. It is a bubbling place with the swimming pool arena creating so much Buzz. It has a beautiful environment with nice facilities, hotel rooms and good reception. Went to swim at the Olympic size pool. Costs 1k. They sell drinks, snack and suya but not your regular price.

A home away from home. What I love most is their standard swimming pool which is accessible at the rate of one thousand naira per head. Loved relaxing by the pool while a friend had a swim. This hotel has a very great swimming pool for beginners and experts. Quite picturesque. A place to visit. Their pool is awesome Olympic size. Its impressive. Nice place, safe and secure plus, the water looks very clean but I can smell the chlorine in the water.

Is it supposed to be so? One of the largest, Olympic standard swimming pools in Lagos. Lagos airport hotel Ikeja is a nice place It has a hall called oramiyan for special event, meeting, seminar, and summit. It is equip with a good swimming pool, and fitness center located on awolowo road beside Mobil filling station Nearest bus stop is Ikeja under bridge Swimming pool is too open to the public. Some pee in the water and its quite disgusting. Anything outside that, the hotel is a place to visit.

Its a cool place with a large swimming pool and good conference halls. A beautiful hotel located very close to the popular Lagos international airport. Affordable with good proximity to both local and international airport. Good place Great staff, but dialpilated environment. It could use a face lift. Affordable food and drinks. The suya and sharwarma was above par in quality. Absolutely mouth watering We ordered double more lol. Saw a lot of people coming to swim and take lessons , some just having fun.

Great Music too. I bet if the management could upgrade it will attract nicer better crowd and they could do more with the space. This is just the definition of airport as it stands out the best in Nigeria Used the pool to be precise. It has a big pool size, well recognized but dirty though. Nice and calm environment. An interesting hospitality complex. Been around for so long and still very lovely.

Well maintained. Located along the road. Could be interesting during weekend nights. An amazing hotel with conducize atmosphere and good security, workers are polite and respectful. Nice place to lodge. The swimming pool is shut down and the whole structure is not well maintained. Guess house. Climbing and getting better in service delivery. Nice and cool place to swim and relax. Swimming close by 6pm providing enough time to relax and chill in the Olympics size pool. The Staff were courteous and professional but the Room I stayed in needs some cleaning and renovation.

The Shower and Bathtub need replacement. I stayed in Room Need complete refurbishment due to proximity of the area to have first class hotel. Beautiful environment, wonderful service, faster to the airport. Lovely place to hangout with friends and go for a good swim. Hotel is good for meetings as they have many conference halls. But need to improve on their amenities.

Never been in a room here though. But I stop by to grab roasted chicken. It is an age long hotel and one of the best around in the 70s. It has modern facilities including swimming pool, shopping centre, spa, very well furnished rooms, meeting rooms, bar and restaurant to name but a few. It is moderately priced compared to others in its class. It has close proximity to the Murtala Mohammed Airports both local and international to its advantage.

It was really great, it is a vicinity that provides all the amenities that can support human life for easy living. Try to finish your swimming before 1pm on a weekend. It gets pretty crowded. Could upgrade to modern facilities.

Friendly environment though. Accommodation, restaurant and event hall in the busy business district of the commercial capital, Ikeja. Ideal for proximity to the local and international airports. A good hotel though much is needed on upgrade of facilities and parking slots. The hotel reception hall was not at all exquisite or chic as should be. Receptionist was rather too work driven and not customer Friendly.

Good hotel and was top standard years ago. They have to keep to the times and upgrade. Also need to replace a lot of their facilities. The hotel is living in the past. They have probably the biggest pool in Lagos. However, it is usually crowded. The pool, bar and everything still has its touch Its a nice place to visit. Located in Ikeja Lagos Nigeria, good place for lodging close to the airport and for events.

This is an Old, run down hotel on very expansive grounds. Demolished and old unused buildings litter the whole compound. Toilet facilities at the conference halls were dirty and unclean. The hotel has The advantage of being located in a central area of Lagos but the whole property needs to be revamped or better still rebuilt and concessioned to a reputable Hotel brand to manage. Ensure you wear a swimming goggles to the pool.

Lots of chlorine. Was fun been there. I enjoyed there there swimming pool. Large swimming pool, very nice meat and chicken Suya. Water is usually mildly dirty though and it gets rowdy during the weekends. Some indecent activities also happens, parents be advised. Decent 3 star hotel at the heart of the capital. Good parking and security arrangement.

A fun place. It was unique and worthwhile. Cool place to be with a serene environment. A shadow of its old self, dirty toiler, dirty compound, poorly. Nice and cozy environment. I love the swimming pool. The people are thieves in uniforms. Nigerian government should stop them from searching our luggages at multiple locations on arrival.

It is very wrong. Too many checking points give room for stealing. The pool side is relaxing. The chicken suya is also really tasty. This is the most important and best airport in Lagos. Its a good old hotel to sleep in. Nice bed but the bathrooms are not well maintained I remember once I had brown water running off the taps.

Food is OK. Some room Air Conditioners aint working properly too. As at the last time I checked in. Best prices for hotels in the city. Went to use the swimming pool. Everything was in shambles at the pool area and the pool was visibly dirty. An old hotel , with Olympic sized swimming pool , requires alot of work Very Beautiful and comfortable place to live or stay.

Their accommodation and facilities are okay and standard. Technologically advanced parking space, Good security operative, good road, security camera available all over. Good relaxation spot The restaurant, bar and swimming pool section are amazing Large beautiful pool, but surroundings not yet with the 21st century, need to modernise.

Centrally Located in the state capital and is in close proximity to the International Airport. Old but functions as a modern hotel, they are evolving. The standard of the hotel is gone down drastically.

The best and bigest pool in Lagos. Totally love it. Poor, non functional amenities. Poor food, poor environment. Hotel with good facilities, 10 Minutes drive from the Murtala Muhammad international airport. I find the Chinese restaurant particularly great. Only been to the pool. Olympic size and relaxing. Incredible place to spend time, amazing hospitality, clean and conducive environment. Its old and they need to refurnish Bad toilet at the pool side, dirty changing room.

Run down. The filter must have percent transmission at DC and low frequencies where the bias and readout lines will carry signal. The fabrication requires the encapsulation of superconducting wiring in a dielectric-metal envelope with precise electrical characteristics. Sufficiently thick insulation layers with high-conductivity metal layers fully surrounding a patterned superconducting wire in arrayable formats have been demonstrated.

A degenerately doped silicon wafer has been chosen to provide a metallic ground plane. A metallic seed layer is patterned to enable attachment to the ground plane. Thick silicon dioxide films are deposited at low temperatures to provide tunable dielectric isolation without degrading the metallic seed layer. Superconducting wiring is deposited and patterned using microstripline filtering techniques to cut out the relevant frequencies.

A low Tc superconductor is used so that it will attenuate power strongly above the gap frequency. Thick dielectric is deposited on top of the circuit, and then vias are patterned through both dielectric layers. A thick conductive film is deposited conformally over the entire circuit, except for the contact pads for the signal and bias attachments to complete the encapsulating ground plane. Filters are high-aspect- ratio rectangles, allowing close packing in one direction, while enabling the chip to feed through the wall of a copper enclosure.

The chip is secured in the copper wall using a soft metal seal to make good thermal and electrical contact to the outer shield. Method of fabricating a scalable nanoporous membrane filter. A method of fabricating a nanoporous membrane filter having a uniform array of nanopores etch-formed in a thin film structure e. The paper discusses the performance and economics of advanced electrostatic stimulation of fabric filtration AESFF , in which a high-voltage electrode is placed coaxially inside a filter bag to establish an electric field between the electrode and the bag surface.

The electric f The model VFSMOD was used to investigate the effect of varying watershed characteristics and buffer dimensions on the sediment trapping efficiency of vegetative filters. This investigation allows for a better understanding of how watershed characteristics, buffer dimensions, and storm characteristics impact the performance of vegetative filters. Effects of phosphoric acid sprayed into an incinerator furnace on the flue gas pressure drop at fabric filters.

Fabric filters are widely used to remove dust from flue gas generated by waste incineration. However, a pressure drop occurs at the filters , caused by growth of a dust layer on the filter fabric despite regular cleaning by pulsed-jet air. The pressure drop at the fabric filters leads to energy consumption at induced draft fan to keep the incinerator on negative pressure, so that its proper control is important to operate incineration facility efficiently.

The pressure drop at fabric filters decreased whenever phosphoric acid wastewater PAW was sprayed into an incinerator for treating industrial waste. Operational data obtained from the incineration facility were analyzed to determine the short- and long-term effects of PAW spraying on the pressure drop. For the short-term effect, it was confirmed that the pressure drop at the fabric filters always decreased to 0. This effect was expected to be obtained by about one third of present PAW spraying amount.

However, from the long-term perspective, the pressure drop showed an increase in the periods of PAW spraying compared with periods for which PAW spraying was not performed. The pressure drop increase was particularly noticeable after the initial PAW spraying, regardless of the age and type of fabric filters used.

These results suggest that present PAW spraying causes a temporary pressure drop reduction, leading to short-term energy consumption savings; however, it also causes an increase of the pressure drop over the long-term, degrading the overall operating conditions. Thus, appropriate PAW spraying conditions are needed to make effective use of PAW to reduce the pressure drop at fabric filters from a short- and long-term point of view.

Fabrication of dense wavelength division multiplexing filters with large useful area. Dense Wavelength Division Multiplexers DWDM , a kind of narrow band-pass filter , are extremely sensitive to the optical thickness error in each composite layer. Therefore to have a large useful coating area is extreme difficult because of the uniformity problem. To enlarge the useful coating area it is necessary to improve their design and their fabrication.

In this study, we discuss how the tooling factors at different positions and for different materials are related to the optical performance of the design. To improve the coating uniformity, an analysis technique called shaping tooling factor STF was used to analyze the deviation of the optical thickness in different materials so as to enlarge the useful coating area.

Also a technique of etching the deposited layers with oxygen ions was introduced. Design and fabrication of cascaded dichromate gelatin holographic filters for spectrum-splitting PV systems. The technique of designing, optimizing, and fabricating broadband volume transmission holograms using dichromate gelatin DCG is summarized for solar spectrum-splitting applications.

The spectrum-splitting photovoltaic PV system uses a series of single-bandgap PV cells that have different spectral conversion efficiency properties to more fully utilize the solar spectrum. In such a system, one or more high- performance optical filters are usually required to split the solar spectrum and efficiently send them to the corresponding PV cells.

An ideal spectral filter should have a rectangular shape with sharp transition wavelengths. A methodology of designing and modeling a transmission DCG hologram using coupled wave analysis for different PV bandgap combinations is described. To achieve a broad diffraction bandwidth and sharp cutoff wavelength, a cascaded structure of multiple thick holograms is described.

A search algorithm is then developed to optimize both single- and two-layer cascaded holographic spectrum-splitting elements for the best bandgap combinations of two- and three-junction spectrum-splitting photovoltaic SSPV systems illuminated under the AM1.

The power conversion efficiencies of the optimized systems are found to be A fabrication method for cascaded DCG holographic filters is also described and used to prototype the optimized filter for the three-junction SSPV system. Characterization and performance of PAUCam filters. Casas, R. PAUCam is a large field of view camera designed to exploit the field delivered by the prime focus corrector of the William Herschel Telescope, at the Observatorio del Roque de los Muchachos.

One of the new features of this camera is its filter system, placed within a few millimeters of the focal plane using eleven trays containing 40 narrow band and 6 broad band filters , working in vacuum at an operational temperature of K and in a focalized beam. In this contribution, we describe the performance of these filters both in the characterization tests at the laboratory. I do not use a wet scrubber, fabric filter , electrostatic precipitator, activated carbon injection In this article we discuss the rationale for our bandpasses and physical characteristics of the filter set.

The u, v, g, and z filters are entirely glass filters , which provide highly uniform bandpasses across the complete filter aperture. The i filter uses glass with a short-wave pass coating, and the r filter is a complete dielectric filter. We describe the process by which the filters were constructed, including the processes used to obtain uniform dielectric coatings and optimized narrowband antireflection coatings, as well as the technique of gluing the large glass pieces together after coating using UV transparent epoxy cement.

Guided-mode resonant filters and reflectors: Principles, design, and fabrication. In this dissertation, we overview the operational principles of these resonant periodic structures, discuss the methods of their design and fabrication , and propose and demonstrate novel functionalities for spatial and spectral filtering , and unpolarized wideband reflection.

Fashioned with materially sparse gratings, these optical devices are easy to fabricate and integration friendly compared to their traditional multi-layer counterparts making their research and development critical for practical applications. We study, theoretically, modal properties and parametric dependence of resonant periodic bandpass filters operating in the mid- and near-infrared spectral domains. We investigate three different device architectures consisting of single, double, and triple layers based on all-transparent dielectric and semiconductor thin films.

We present three modal coupling configurations forming complex mixtures of two or three distinct leaky modes coupling at different evanescent diffraction orders. Our modal analysis demonstrates key attributes of subwavelength periodic thin-film structures in multiple-modal blending to achieve desired transmission spectra.

We provide the first experimental demonstration of high-efficiency and narrow-linewidth resonant bandpass filter applying a single patterned silicon layer on a quartz substrate. The feasibility of sparse narrowband, high-efficiency bandpass filters with extremely wide, flat, and low sidebands is thereby demonstrated. The proposed technology is integration-friendly and opens doors for further development in various disciplines and spectral regions where thin-film solutions are traditionally applied.

We demonstrate concurrent spatial and spectral filtering as a new outstanding attribute of resonant periodic devices. This functionality is enabled by a unique, near-complete, reflection state that is discrete in both. SERS substrates fabricated using ceramic filters for the detection of bacteria: Eliminating the citrate interference. It was found that spectra obtained for bacteria on SERS substrates fabricated by filtering citrate-generated Ag nanoparticles NPs onto rigid, ceramic filters exhibited peaks due to citrate as well as the bacteria.

In many cases the citrate spectrum overwhelmed that of the bacteria. Given the simplicity of the method to prepare these substrates, means of eliminating this citrate interference were explored. It was found that allowing a mixture of bacteria suspension and citrate-generated Ag NPs to incubate prior to filtering onto the ceramic filter eliminated this interference. The report describes an improved mathematical model for use by control personnel to determine the adequacy of existing or proposed filter systems designed to minimize coal fly ash emissions.

Several time-saving steps have been introduced to facilitate model application by Agency Rocking filters fabricated in birefringent photonic crystal fiber. We demonstrate an efficient higher order rocking filter , which resonantly couples polarization modes guided in birefringent photonic crystal fibers. The grating was inscribed in the birefringent fiber with two large holes adjacent to the core by periodic mechanical twisting and heating with an arc fusion splicer.

Because in photonic crystal fibers the phase birefringence is very dispersive and increases against wavelength, the phase matching between coupled modes can be obtained simultaneously at several wavelengths. The length of the filter was 9.

We also present the results of sensitivity measurements of this filter to hydrostatic pressure and temperature. We report a design and fabrication strategy for creating an artificially stacked multilayered optical filters using a thermal evaporation technique. The fabricated filters consist of high and low refractive 7 and 13 alternating layers, which exhibit a reflectance of The optical microcavity achieved an average transmittance of The obtained results suggest that these filters could be an exceptional choice for next-generation antireflection coatings, high-reflection mirrors, and polarized interference filters.

Fabrication of gradient optical filter containing anisotropic Bragg nanostructure. New gradient optical filters containing asymmetric Bragg structure were prepared from the distributed Bragg reflector DBR porous silicon PSi. Anisotropic DBR PSi displaying a rainbow-colored reflection was generated by using an asymmetric etching configuration. The surface and cross-sectional images images of anisotropic DBR PSi composite films obtained with cold field emission scanning electron microscope indicated that the average pore size and the thickness of porous layer decreased as the lateral distance increased.

As lateral distance increased, the reflection resonance shifted to shorter wavelength. A lithium niobate electro-optic tunable Bragg filter fabricated by electron beam lithography. We have designed and fabricated a lithium niobate tunable Bragg filter patterned by electron beam lithography and etched by reactive ion etching.

Devices with 1 mm, 2 mm and 4 mm length and and nm Bragg period, with 5 pm V-1 tuning efficiency, have been characterized. Some applications were identified. Optical simulation based on finite element model FEM software showing the optical filtering curve and the coupling factor dependence on the manufacturing parameter is reported.

The tuning of the filter window position is electro-optically controlled. SERS substrates fabricated using ceramic filters for the detection of bacteria. SERS substrates were fabricated by filtering either Ag or Au colloidal particles onto rigid, ceramic filters - onto which suspensions of bacteria were then filtered. SERS spectra of the bacteria were obtained using a Raman spectrometer that has an 'orbital raster scan' capability.

It was shown that bacteria samples prepared in this manner were uniformly distributed onto the surface of the SERS substrate. The effect of common buffer systems on the SERS spectra was investigated and the utility of using the SERS technique for speciation of bacteria was explored.

Published by Elsevier B. Fabrication of frequency selective surface for band stop IR- filter. The fabrication process consists of growth of SiO2 on silicon, tungsten deposition, electron beam lithography, and wet etching of tungsten. The optical characterization of the structural pattern was carried out using fourier transform infrared spectroscopy FTIR. The reflectance spectra clearly show a resonance peak at 9. This indicates that the patterned surface acts as band stop filter in the mid-infrared region.

By virtue of the coupling agent, which plays an important part in bonding amorphous titanium dioxide and epoxy resin, the structure of super-hydrophobic thin film on the filter paper surface is extremely stable. The microstructure of super-hydrophobic filter paper was characterized by scanning electron microscopy SEM , the images showed that the as-prepared filter paper was covered with uniform amorphous titanium dioxide particles, generating a roughness structure on the filter paper surface.

The super-hydrophobic performance of the filter paper was characterized by water contact angle measurements. Some experiments were also designed to test the effect of water-oil separation and UV-resistant by the super-hydrophobic filter paper. The prepared super-hydrophobic filter paper worked efficiently and simply in water-oil separation as well as enduringly in anti-UV property after the experiments. This method offers an opportunity to the practical applications of the super-hydrophobic filter paper.

Design, fabrication , and characterization of Fresnel lens array with spatial filtering for passive infrared motion sensors. A cubic-phase distribution is applied in the design, fabrication and characterization of inexpensive Fresnel lens arrays for passive infrared motion sensors.

The resulting lens array produces a point spread function PSF capable of distinguish the presence of humans from pets by the employment of the so-called wavefront coding method. The cubic phase distribution used in the design can also reduce the optical aberrations present in the system. This aberration control allows a high tolerance in the fabrication of the lenses and in the alignment errors of the sensor.

In order to proof the principle, a lens was manufactured on amorphous hydrogenated carbon thin film, by well-known micro fabrication process steps. The optical results demonstrates that the optical power falling onto the detector surface is attenuated for targets that present a mass that is horizontally distributed in space e.

Then a mould on steel was fabricated by laser engraving, allowing large-scale production of the lens array in polymeric material. Finally the performance of the sensor was measured in a climate-controlled test laboratory constructed for this purpose.

The results show that the sensor operates normally with a human target, with a 12 meter detection zone and within an angle of degrees. On the other hand, when a small pet runs through a total of 22 different trajectories no sensor trips are observed. The novelty of this work is the fact that the so-called pet immunity function was implemented in a purely optical filtering.

As a result, this approach allows the reduction of some hardware parts as well as decreasing the software complexity, once the. Nano-aquarium fabrication with cut-off filter for mechanism study of Phormidium assemblage. We demonstrate fabrication of microfluidic chips integrated with different functional elements such as optical filters and optical waveguide for mechanism study of gliding movement of Phormidium to a seedling root using a femtosecond fs laser.

Fs laser direct writing followed by annealing and successive wet etching in dilute hydrofluoric HF acid solution resulted in formation of three dimensional 3D hollow microstructures embedded in a photostructurable glass. The embedded microfludic structures enabled us to easily and efficiently observe Phormidium gliding to the seedling root, which accelerates growth of the seedling. In addition, fabrication of optical filter and optical waveguide integrated with the microfluidic structures in the microchip clarified the mechanism of the gliding movement.

Such microchips, referred to as a nano-aquarium, realize the efficient and highly functional observation and analysis of the gliding movement of Phormidium. Lab on a fabric : Mass producible and low-cost fabric filters for the high-throughput viable isolation of circulating tumor cells. Circulating tumor cells CTCs play an important role in estimating the presence and the metastatic relapse of tumor. Despite of their importance, isolation of viable CTCs is still struggling, since chemical or mechanical damages are unavoidable when separating less than of CTCs out of billions of other blood components.

Furthermore, the current CTC isolation devices show low productivity, since they are produced after a series of complicated fabrication processes. Here, we present a low-cost and mass-producible fabric filters for the viable CTC isolation and the further molecular assay for profiling cancer-associated markers. By utilizing size-based sorting method, the fabric filter is capable to isolate both epithelial and mesenchymal CTCs, while slots with curved walls are beneficial for preventing the cell rupture by reducing We applied our filter to 11 human blood samples and found that the number of CTCs was closely related to the expression level of Ki, which is highly overexpressed in proliferative tumors.

The fabric filter might be an appropriate caner-screening tool in developing countries, where people suffer from insufficient healthcare services. I do not use a wet scrubber, fabric filter , electrostatic precipitator, or activated carbon I establish operating limits if I do not use a wet scrubber, fabric filter , electrostatic If you use an air pollution control device other than a wet scrubber, fabric filter Fabric filter model sensitivity analysis.

Final report Jun Feb However, the apparent agreement between predicted and actual values was based on limited comparisons: validation was carried out without regard to optimization of the data inputs selected by the filter users or manufactures. The sensitivity tests involved introducing into the model several hypothetical data inputs that reflect the expected ranges in the principal filter system variables.

A key objective of the tests was to determine the variables that require the greatest accuracy in estimation based on their overall impact on model output. For K2 variations, the system resistance and emission properties showed little change; but the cleaning requirement changed drastically. On the other hand, considerable difference in outlet dust concentration was indicated when the degree of fabric cleaning was varied.

To make the findings more useful to persons assessing the probable success of proposed or existing filter systems, much of the data output is presented in graphs or charts. Study on the fabrication of low-pass metal powder filters for use at cryogenic temperatures. We fabricated compact low-pass stainless-steel powder filters for use in low-noise measurements at cryogenic temperatures and investigated their attenuation characteristics for different wire lengths, filter shapes, and preparation methods at frequencies up to 20 GHz.

All the fabricated powder filters showed a large attenuation at high frequencies with a cut-off frequency near 1 GHz. However, the toroidal filter showed prominent ripples corresponding to resonance modes in the 0. As the powder-to-epoxy ratio was increased, the high-frequency attenuation increased.

An equally-spaced single-layer coil structure was found to be more efficient in attenuation than a double-layer coil. The geometry of the metal filter 's case affected the noise ripples, with the least noise being found for a circular tube. Performance of breathing filters under wet conditions: a laboratory evaluation. Heat and moisture exchangers in combination with a bacterial and viral filter HMEF are widely used during general anaesthesia. Excess patient secretions occluding the HMEF have been responsible for previous case reports of airway obstruction.

A previous study suggested that differences in HMEF design might contribute to filter obstruction under wet conditions. Incremental amounts of saline were added to each filter. The pressure across the filter was measured with an air flow of 60 litre min We observed that saline added to the filter was often not easily visible to the casual observer.

This concealment volume varied between filters. Ceramic hydrophobic pleated-membrane filters did not absorb saline and their resistance did not change. The ideal HMEF for use during general anaesthesia should prevent the passage of viral, bacterial and prion material, should provide this filtration performance even under wet conditions, should supplement humidification of the inspired air and anaesthetic gases and should not increase respiratory work.

We have identified large variations in HMEF performance under wet conditions. Users should be aware of performance variation in HMEFs and use a filter suited to the intended application. Ensemble Kalman filter EnKF is an important data assimilation method for high-dimensional geophysical systems. Efficient implementation of EnKF in practice often involves the localization technique, which updates each component using only information within a local radius. This paper rigorously analyzes the local EnKF LEnKF for linear systems and shows that the filter error can be dominated by the ensemble covariance, as long as 1 the sample size exceeds the logarithmic of state dimension and a constant that depends only on the local radius; 2 the forecast covariance matrix admits a stable localized structure.

In particular, this indicates that with small system and observation noises, the filter error will be accurate in long time even if the initialization is not. The analysis also reveals an intrinsic inconsistency caused by the localization technique, and a stable localized structure is necessary to control this inconsistency.

While this structure is usually taken for granted for the operation of LEnKF, it can also be rigorously proved for linear systems with sparse local observations and weak local interactions. These theoretical results are also validated by numerical implementation of LEnKF on a simple stochastic turbulence in two dynamical regimes.

Performance comparison of denoising filters for source camera identification. Source identification for digital content is one of the main branches of digital image forensics. It relies on the extraction of the photo-response non-uniformity PRNU noise as a unique intrinsic fingerprint that efficiently characterizes the digital device which generated the content.

Such noise is estimated as the difference between the content and its de-noised version obtained via denoising filter processing. This paper proposes a performance comparison of different denoising filters for source identification purposes. In particular, results achieved with a sophisticated 3D filter are presented and discussed with respect to state-of-the-art denoising filters previously employed in such a context. Quijada, Manuel A.

Kim; Allen, George; Arsenovic, Peter. The mission of the WFC3 is to enhance HST1s imaging capability in the ultraviolet, visible and near-infrared spectral regions. Together with a wavelength coverage spanning A to 1. The filter compliment, which includes broad, medium, and narrow band filters , naturally reflects the diversity of astronomical programs to be targeted with WFC3.

Replacement filters with band-defining coatings that substantially reduce these ghost images were designed and procured. A state-of-the-art characterization setup was developed to measured the intensity of ghost images, focal shift, wedge direction , transmitted uniformity and surface feature of filters that could effect uniform flat field images. We will report on this new filter characterization methods, as well as the spectral performance measurements of the in-band transmittance and blocking.

Performance evaluation of an asynchronous multisensor track fusion filter. Recently the authors developed a new filter that uses data generated by asynchronous sensors to produce a state estimate that is optimal in the minimum mean square sense. The solution accounts for communications delay between sensors platform and fusion center. It also deals with out of sequence data as well as latent data by processing the information in a batch-like manner.

This paper compares, using simulated targets and Monte Carlo simulations, the performance of the filter to the optimal sequential processing approach. Facile fabrication of a poly ethylene terephthalate membrane filter with precise arrangement of through-holes. Although membrane filters are indispensable in biochemical analysis fields, most methods for through-hole fabrication are complex and inefficient.

We developed a simple method of fabricating poly ethylene terephthalate PET membrane filters with a precise arrangement of through-holes for the isolation of circulating tumor cells CTCs based on their size. Device fabrication for the size-based capture of rare cells in blood such as CTCs is realized in this study.

Enhanced performance of a filter -sensor system. In this paper are addressed two important, but seemingly unrelated issues: long term performance of a gas sensing array and performance of an air purification unit. It is shown that when considered together, the system can be regarded as a "smart filter ". The enhancement is achieved by periodic differential sampling and measurement of the "upstream" and "downstream" gases of a filter. The correctly functioning filter supplies the "zero gas" from the downstream for the continuous sensor baseline correction.

A key element in this scheme is the synthetic jet that delivers well-defined pulses of the two gases. The deterioration of the performance of the "smart filter " can be diagnosed from the response pattern of the sensor. High- performance analysis of filtered semantic graphs.

High performance is a crucial consideration when executing a complex analytic query on a massive semantic graph. In a semantic graph, vertices and edges carry "attributes" of various types. Analytic queries on semantic graphs typically depend on the values of these attributes; thus, the computation must either view the graph through a filter that passes only those individual vertices and edges of interest, or else must first materialize a subgraph or subgraphs consisting of only the vertices and edges of interest.

In the Knowledge Discovery Toolbox KDT , a Python library for parallel graph computations, the user writes filters in a high-level language, but those filters result in relatively low performance due to the bottleneck of having to call into the Python interpreter for each edge.

Novel fabrication method of the peritoneal dialysis filter using silk fibroin with urease fixation system. During the last decade, there has been a great advance in the kidney dialysis system by wearable artificial kidney WAK system for end-stage renal disease patients.

Uremic solute removal and water regeneration system are the most prerequisite for WAK to work properly. In this study, we designed a filtering membrane system by using immobilized urease silk fibroin filter and evaluated its comparative effectiveness with a PVDF filtering system in peritoneal dialysate regeneration system by urea removal efficacy.

We evaluated this membrane's characteristic and performances by conducting SEM-EDX analyze, water-binding abilities and porosity test, removal abilities of urea, cytotoxicity assay and enzyme activity assay. In addition silk fibroin with urease filter removed 90 percent of urea in the peritoneal dialysate after 24 h filtration.

We suggest that silk fibroin with urease fixation filter can be used more effectively for peritoneal dialysate regeneration system, which have hydrophilic property and prolonged enzyme activity. Stability and performance of notch filter control for unbalance response.

Many current applications of magnetic bearings for rotating machinery employ notch filters in the feedback control loop to reduce the synchronous forces transmitted through the bearings. The capabilities and limitations of notch filter control are investigated. First, a rigid rotor is examined with some classical root locus techniques. Notch filter control is shown to result in conditional stability whenever complete synchronous attenuation is required. Next, a nondimensional parametric symmetric flexible three mass rotor model is constructed.

An examination of this model for several test cases illustrates the limited attenuation possible with notch filters at and near the system critical speeds when the bearing damping is low. The notch filter 's alteration of the feedback loop is shown to cause stability problems which limits performance. Poor transient response may also result. A high speed compressor is then examined as a candidate for notch filter control.

A collocated 22 mass station model with lead-lag control is used. The analysis confirms the reduction in stability robustness that can occur with notch filter control. It is concluded that other methods of synchronous vibration control yield greater performance without compromising stability. The speckle noise is inherent to transthoracic echocardiographic images. A standard noise-free reference echocardiographic image does not exist.

The evaluation of filters based on the traditional parameters such as peak signal-to-noise ratio, mean square error, and structural similarity index may not reflect the true filter performance on echocardiographic images. Therefore, the performance of despeckling can be evaluated using blind assessment metrics like the speckle suppression index, speckle suppression and mean preservation index SMPI , and beta metric. The need for noise-free reference image is overcome using these three parameters.

This paper presents a comprehensive analysis and evaluation of eleven types of despeckling filters for echocardiographic images in terms of blind and traditional performance parameters along with clinical validation. The noise is effectively suppressed using the logarithmic neighborhood shrinkage NeighShrink embedded with Stein's unbiased risk estimation SURE.

The SMPI is three times more effective compared to the wavelet based generalized likelihood estimation approach. The quantitative evaluation and clinical validation reveal that the filters such as the nonlocal mean, posterior sampling based Bayesian estimation, hybrid median, and probabilistic patch based filters are acceptable whereas median, anisotropic diffusion, fuzzy, and Ripplet nonlinear approximation filters have limited applications for echocardiographic images.

PubMed Central. Design and experimentally measure a high performance metamaterial filter. Metamaterial filter is a kind of expecting optoelectronic device. Simulated results indicate that the perfect impedance matching condition between the metamaterial filter and the free space leads to the transmission band. Measured results show that the proposed metamaterial filter achieves high performance transmission on TM and TE polarization directions.

Further measured results show that the transmission band can be expanded through optimizing structural parameters. The central frequency of the transmission band is also can be adjusted through optimizing structural parameters. The physical mechanism behind the central frequency shifted is solved through establishing an equivalent resonant circuit model. Application of multi-tone mask technology in photolithographic fabrication of color filter components in LCD.

Recent progresses in the photoresists and photolithography for LCD industry applications have been primarily driven by the following two factors: advancement in the material performances high resolution, high contrast ratio, low dielectric constant for higher display quality, and cost reduction in the fabrication process. Along with crucial demand for cost competitiveness by improving production efficiency, environmental consciousness has been a major priority at fabrication process design to minimize the amount of waste produced.

Having said the above, integration of two or more fabrication processes into a single process by using multi-tone mask technology has been the interest of research, due to its obvious advantage of reducing fabrication processes and cost. For example, multi-tone mask technology application has been widely employed on the TFT side to reduce the different types of photomasks being used. Similar trend has been employed on the CF side as well, where application of multi-tone mask technology is being investigated to integrate fabrication of multiple CF micro-components into a single process.

In this presentation, we demonstrate a new approach of fabricating photospacer and peripheral CF components MVA protrusion, sub-photospacers in a single integrated process through multi-tone mask technology. Influence of hydrophobic surface treatment toward performance of air filter. This study investigated the performance of hydrophobic surface treatment by using silica aerogel powder via spray coating techniques. Hydrophobic properties were determined by measuring the level of the contact angle.

Meanwhile, performance was evaluated in term of the hydrogen gas flow and humidity rejection. The results are shown by contact angle that the microstructure filter , especially in the upper layer and sub-layer has been changed. The results also show an increase of hydrophobicity due to the increased quantity of silica aerogel powder. Results also showed that the absorption and rejection filter performance filter has increased after the addition of silica aerogel powder.

The results showed that with the addition of 5 grams of powder of silica aerogel have the highest result of wetting angle The highest humidity rejection found with 5 grams of powder of silica aerogel. The blunt trauma performance of fabric systems against 9 mm bullets is reported. The results showed that layer and layer all-neat fabric systems failed the blunt trauma test.

However, fabric systems with natural rubber NR latex coated fabric layers gave lower blunt trauma of between mm indentation depths. Deformations on the neat fabrics upon impact were identified as broken yarns, yarn stretching and yarn pull-out. Deflections of the neat fabrics were more localised.

From the study, it can be said that the NR latex coated fabric layers were effective in reducing the blunt trauma of fabric systems. Design, fabrication and performance of two grazing incidence telescopes for celestial extreme ultraviolet astronomy. The design and performance of grazing incidence telescopes for celestial extreme ultraviolet EUV astronomy are described. The telescopes basically consist of a star tracker, collimator, grazing incidence mirror, vacuum box lid, vacuum housing, filters , a ranicon detector, an electronics box, and an aspect camera.

For the survey mirror a Wolter-Schwarzschild type II configuration was selected. Diamond-turning was used for mirror fabrication , a technique which machines surfaces to the order of 10 microns over the required dimensions. Fabrication of 0. A process for the fabrication of surface acoustic wave SAW devices with line widths of nm and less, based on x-ray lithography using a laser-plasma source has been developed.

The x-ray lithography process is based on keV x-ray emission from Cu plasma produced by 15 Hz, 50 ps, nm KrF excimer laser pulses. The full structure of a 2 GHz surface acoustic wave filter with interdigital transducers in a split-electrode geometry has been manufactured.

The devices require patterning a nm thick aluminum layer on a LiNbO3 substrate with electrodes nm wide. The manufacturing process has two main steps: x-ray mask fabrication employing e-beam lithography and x-ray lithography to obtain the final device. The x-ray masks are fabricated on 1 micrometers thick membranes of Si2N4. The line patterns on the masks are written into PMMA resist using a scanning electron microscope which has been interfaced to a personal computer equipped to control the x and y scan voltages.

The opaque regions of the x-ray mask are then formed by electroplating fine grain gold into the open spaces in the etched PMMA. The mask and sample are mounted in an exposure cassette with a fixed spacer of 10 micrometers separating them. The x-ray patterning is carried out in an exposure chamber with flowing helium background gas in order to minimize debris deposition on the filters. After etching the x-ray resist, the final patterns are produced using metallization and a standard lift-off technique.

The SAW filters are then bonded and packaged onto impedance matching striplines. The resultant devices are tested using Scalar Network Analyzers. The final devices produced had a center frequency of 1. Membrane filters are in widespread use, and manufacturers have considerable interest in improving their performance , in terms of particle retention properties, and total throughput over the filter lifetime.

A good question to ask is therefore: what is the optimal configuration of filter membranes, in terms of internal morphology pore size and shape , to achieve the most efficient filtration? To answer this question, we must first propose a robust measure of filtration performance.

As filtration occurs the membrane becomes blocked, or fouled, by the impurities in the feed solution, and any performance measure must take account of this. For example, one performance measure might be the total throughput the volume of filtered feed solution at the end of the filtration process, when the membrane is so badly blocked that it is deemed no longer functional.

Here we present a simplified mathematical model, which i characterizes membrane internal pore structure via pore or permeability profiles in the depth of the membrane; ii accounts for various membrane fouling mechanisms adsorption, blocking and cake formation ; and iv predicts the optimum pore profile for our chosen performance measure.

Purposes To evaluate the optical performance of blue-light filtering spectacle lenses and investigate whether a reduction in blue light transmission affects visual performance and sleep quality. Methods Experiment 1: The relative changes in phototoxicity, scotopic sensitivity, and melatonin suppression of five blue-light filtering plano spectacle lenses were calculated based on their spectral transmittances measured by a spectrophotometer.

Experiment 2: A pseudo-randomized controlled study was conducted to evaluate the clinical performance of two blue-light filtering spectacle lenses BF: blue- filtering anti-reflection coating; BT: brown-tinted with a regular clear lens AR serving as a control.

A total of eighty computer users were recruited from two age cohorts young adults: 18—30 yrs, middle-aged adults: 40—55 yrs. Contrast sensitivity under standard and glare conditions, and colour discrimination were measured using standard clinical tests. After one month of lens wear, subjective ratings of lens performance were collected by questionnaire. Results All tested blue-light filtering spectacle lenses theoretically reduced the calculated phototoxicity by Although use of the blue-light filters also decreased scotopic sensitivity by 2.

Conclusion Blue-light filtering spectacle lenses can partially filter high-energy short-wavelength light without substantially degrading visual performance and sleep quality. These lenses may. To evaluate the optical performance of blue-light filtering spectacle lenses and investigate whether a reduction in blue light transmission affects visual performance and sleep quality. Experiment 1: The relative changes in phototoxicity, scotopic sensitivity, and melatonin suppression of five blue-light filtering plano spectacle lenses were calculated based on their spectral transmittances measured by a spectrophotometer.

A total of eighty computer users were recruited from two age cohorts young adults: yrs, middle-aged adults: yrs. All tested blue-light filtering spectacle lenses theoretically reduced the calculated phototoxicity by Blue-light filtering spectacle lenses can partially filter high-energy short-wavelength light without substantially degrading visual performance and sleep quality. These lenses may serve as a supplementary option for protecting the retina from potential.

Solar-blind deep-UV band-pass filter - nm consisting of a metal nano-grid fabricated by nanoimprint lithography. The filter consists of an aluminum nano-grid, which was made by coating 20 nm Al on a SiO 2 square grid with nm pitch, 30 nm linewidth and nm depth. The performances agree with a rigorous coupled wave analysis. The wavelength for the peak transmission and the pass-bandwidth can be tuned through adjusting the metal nano-grid dimensions. The filter was fabricated by nanoimprint lithography, hence is large area and low cost.

Combining with Si photodetectors, the filter offers simple yet effective and low cost solar-blind deep-UV detection at either a single device or large-area complex integrated imaging array level. The paper discusses computations on the performance of particle filters and electronic air cleaners EACs. The collection efficiency of particle filters and ACs is calculable if certain factors can be assumed or calibrated.

For fibrous particulate filters , measurement of colle High throughput fabrication of large-area plasmonic color filters by soft-X-ray interference lithography. Plasmonic color filters in mass production have been restricted from current fabrication technology, which impede their applications. Soft-X-ray interference lithography XIL has recently generated considerable interest as a newly developed technique for the production of periodic nano-structures with resolution theoretically below 4 nm.

Here we ameliorate XIL by adding an order sorting aperture and designing the light path properly to achieve perfect-stitching nano-patterns and fast fabrication of large-area color filters. The fill factor of nanostructures prepared on ultrathin Ag films can largely affect the transmission minimum of plasmonic color filters. By changing the fill factor, the color can be controlled flexibly, improving the utilization efficiency of the mask in XIL simultaneously. The calculated data agree well with the experimental results.

Finally, an underlying mechanism has been uncovered after systematically analyzing the localized surface plasmon polaritons LSPPs coupling in electric field distribution. Filter performance parameters for vectorial high-aperture wave fields.

Performance parameters have been presented that can be used to compare the focusing performance of different optical systems, including the effect of pupil filters. These were originally given for the paraxial case and recently extended to the high-aperture scalar regime.

We generalize these parameters to the full vectorial case for an aplanatic optical system illuminated by a plane-polarized wave. The behavior of different optical systems is compared. The main purpose of this work is to study the effect of a selectively etched ferroelectric thin film layer on the performance of an electrically tunable filter.

Tunable filters with varying lengths of BSTO thin-film in the input and output coupling gaps were modeled, as well as experimentally tested. Experimental results showed that filters with coupling gaps partially filled with BSTO maintained frequency tunability and improved the insertion loss by approx. To the best of our knowledge, these results represent the first experimental demonstration of the advantages of selective etching in the performance of thin film ferroelectric-based tunable microwave components.

Prediction of particulate loading in exhaust from fabric filter baghouses with one or more failed bags. Loss of filtration efficiency in a fabric filter baghouse is typically caused by bag failure, in one form or another. The degree of such failure can be as minor as a pinhole leak or as major as a fully involved baghouse fire. In some cases, local air pollution regulations or federal hazardous waste laws may require estimation of the total quantity of particulate matter released to the environment as a result of such failures.

In this paper, a technique is presented for computing the dust loading in the baghouse exhaust when one or more bags have failed. An example calculation is presented for a baghouse equipped with bags. The prediction shows that a small percentage of failed bags can cause a relatively large proportion of the gas flow to bypass the active bags, which, in turn, leads to high outlet dust loading and low overall collection efficiency from the baghouse. The algorithm developed is shown to be an improvement over a previously published result, which requires empirical knowledge of the variation in baghouse pressure differential with bag failures.

New fabrication technologies are being exploited for building high graphite-fiber-reinforced composite structure. Stitched fiber preforms and resin film infusion have been successfully demonstrated for large, composite wing structures. These methods have the potential to yield low cost high performance structures by fabricating composite structures to net shape out-of-autoclave.

Metal materials often have high extinction coefficients in far ultraviolet FUV region, so optical thickness of metal materials should be smaller than that of the dielectric material. Boosting CNN performance for lung texture classification using connected filtering. Infiltrative lung diseases describe a large group of irreversible lung disorders requiring regular follow-up with CT imaging. Quantifying the evolution of the patient status imposes the development of automated classification tools for lung texture.

This paper presents an original image pre-processing framework based on locally connected filtering applied in multiresolution, which helps improving the learning process and boost the performance of CNN for lung texture classification. By removing the dense vascular network from images used by the CNN for lung classification, locally connected filters provide a better discrimination between different lung patterns and help regularizing the classification output.

Fabrication of highly hydrophilic filter using natural and hydrothermally treated mica nanoparticles for efficient waste oil-water separation. To fabricate a double layered filter , hydrothermally treated mica particles were initially electrodeposited on a stainless steel mesh and a natural mica particles were sprayed on the first hydrothermally deposited mica layer.

Properties of double layered mica membrane were investigated and noted that the surface adhesion properties of mica is enhanced by the hydrothermal treatment of mica and the higher roughness of the mica layer is maintained by the natural mica. Simultaneously, due to the fluffy brush-like hierarchical structure of CNTs on QFs, the pore size of the hybrid filters only has a small increment.

Scanning electron microscope images reveal that CNTs are very efficient in capturing sub-micron aerosols. Fabrication and stabilization of silicon-based photonic crystals with tuned morphology for multi-band optical filtering.

One-dimensional silicon-based photonic crystals are formed by the electrochemical anodization of silicon substrates in hydrofluoric acid-based solution using an appropriate current density profile. In order to create a multi-band optical filter , two fabrication approaches are compared and discussed. The first approach utilizes a current profile composed of a linear combination of sinusoidal current waveforms having different frequencies. The individual frequency of the waveform maps to a characteristic stop band in the reflectance spectrum.

The stopbands of the optical filter created by the second approach, on the other hand, are controlled by stacking multiple porous silicon rugate multilayers having different fabrication conditions. The morphology of the resulting optical filters is tuned by controlling the electrolyte composition and the type of the silicon substrate. The reduction of sidelobes arising from the interference in the multilayers is observed by applying an index matching current profile to the anodizing current waveform.

In order to stabilize the resulting optical filters against natural oxidation, atomic layer deposition of silicon dioxide on the pore wall is employed. For moisture regulation, careful selection of fibre, fibre packing in yarns and fabric structure are necessary. Introducing selective porosity in yarn can significantly influence moisture transport properties in fabrics made out of profiled fibre yarn.

The arrangement of fibres in the yarn and that of yarn in fabric provide wide variability in the size and shape of the passage of liquid to flow. A change in the cross sectional diameter of the capillary leads to a change in interfacial speed for liquid.

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Simultaneous multichannel carrier-suppressed return-to-zero to non-return-to-zero format conversion using a fiber Bragg grating more. The spectral response of each The tailored group delays are introduced to minimize the maximum refractive index modulation. It is shown that our proposed FBG is robust to deviations of bandwidth and central wavelength detuning.

Another important merit of this scheme is that the pattern effects are efficiently reduced owing to the well-designed spectra response. Top-hat random fiber Bragg grating more. Fibre grating filters for suppression of near infrared OH emission lines more. ABSTRACT Here we present the design and fabrication of multi-notch optical fibre Bragg gratings for suppressing OH emission lines in the near infrared spectra of the night sky for astrophysical applications.

We demonstrate a novel We demonstrate a novel approach of fabricating 2, 3 and 5-notch filters using the phase mask technology, which show a good match with the model. A technique for mitigating the effect of the writing-beam profile on fibre Bragg grating fabrication more.

We propose and demonstrate a pre-compensation mechanism to account for the writing-beam profile which when applied to the design of advanced fibre Bragg gratings helps to achieve a desired design spectral response. We use the example of a We use the example of a complex multi-channel grating as an example to demonstrate the improvement achievable using the pre-compensation and find good agreement between experimental results and numerical calculations.

Optical physics and Electrical And Electronic Engineering. The partnership with James Bond has further driven home the uniqueness and the premiumness of the Heineken brand. He added that consumers generally have insights, which drive them to approve a brand like Heineken. The packaging, he continued, is state of the art and a retinue of distributors will ensure that it gets to the hands of its consumers wherever they are.

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