نتایج جستجو برای: channel drop filter

تعداد نتایج: 383363  

Journal: :international journal of occupational hygiene 0
ehsan farvaresh department of occupational health engineering, school of public health,tehran university of medical sciences, tehran, iran. farideh golbabaei department of occupational health engineering, school of public health,tehran university of medical sciences, tehran, iran. mansour ghiyaseddin department of occupational health engineering, school of public health,tehran university of medical sciences, tehran, iran. ali behdashti managing director of imen sarv co. keramatollah nouri-jaliani department of epidemiology & biostatics, school of public health, tehran university of medical sciences, tehran, iran. mehrdad karimi department of epidemiology & biostatics, school of public health, tehran university of medical sciences, tehran, iran.

the aim of this study was to evaluate the effect of evaporative media as gas turbine intake air cooling method on pressure drop of cartridge air filters. this study performed under the laboratory condition, using stainless steel test rig with specified dimensions to investigate the role of evaporative media in air cooling as well as its effects on new and used cartridge filters (as representati...

2008
V K Kothari

The filtration behaviour of woven and nonwoven fabrics at different air flow rate, dust feed rate, dust loading, time intervals and dust particles has been studied. It is observed that the pressure drop increases with the increase in airflow rate for both the woven and nonwoven filters. In general, the pressure drop in case of woven filter is found to be higher than that in case of nonwoven fil...

 Recently, special type of fuel cells has been developed that operates in a Dead End mode. Working in this condition, the Dead-End fuel cell is supplied withhydrogen almost at the same rate of consumption. It is noteworthy to mention thatall of the water transport mechanisms have been considered in this simulation.Water accumulation that is directly proportional to the cell current is of a grea...

An electro-optic tunable single and multi-channel optical filter based on one-dimensional defective photonic crystal (1DDPC) structure is proposed. A couple of externally tunable defects in arrangement of (AB)5D1(BA)D2(BA)5, where A and B are dielectric materials, D1 and D2 are the tunable defects are used. The defects are composed of the ferroelectric LiNbO3 crystals and two pairs of thin Ag l...

Journal: :Modelling and Simulation in Engineering 2012

Journal: :Physical review letters 2006
Edo Waks Jelena Vuckovic

We show that a waveguide that is normally opaque due to interaction with a drop-filter cavity can be made transparent when the drop filter is also coupled to a dipole, even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is simply achieving large Purcell factors. We describe how this effect can be useful for designing quantum ...

Journal: :Optics letters 1998
A S Kewitsch G A Rakuljic P A Willems A Yariv

We developed and fabricated an all-fiber add-drop filter by recording a Bragg grating in the waist of an asymmetric mode converter-coupler formed by adiabatic tapering and fusing of two locally dissimilar, single-mode optical fibers. The insertion loss of the device was ~0.1 dB .A narrow spectral bandwidth (<1 nm) and a large add-drop efficiency (>90%) were also demonstrated. In addition, the f...

Journal: :Optics express 2009
Qing Li Mohammad Soltani Siva Yegnanarayanan Ali Adibi

We design and fabricate a compact third-order coupledresonator filter on the silicon-on-insulator platform with focused application for on-chip optical interconnects. The filter shows a large flat bandwidth (3dB 3.3nm), large FSR (approximately 18nm), more than 18dB out-of-band rejection at the drop port and more than 12 dB extinction at the through port, as well as a negligible drop loss (<0.5...

A. Khaki-Sedigh, A. Moharampour, J. Poshtan,

In this paper, after defining pure proportional navigation guidance in the 3-dimensional state from a new point of view, range estimation for passive homing missiles isexplained. Modeling has been performed by using line of sight coordinates with a particulardefinition. To obtain convergent estimates of those state variables involved particularly inrange channel and unavailable from IR trackers...

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