Results 31 to 40 of about 28,123,794 (342)

Development of Filter Media by Electrospinning for Air Filtration of Nanoparticles from PET Bottles

Membranes, 2021
Air pollution and solid pollution are considered global problems, and endanger human health mainly due to the emission of fine particulate matter released into the atmosphere and improper disposal of post-consumer plastic bottles. Therefore, it is urgent
Daniela P. F. Bonfim, Fabiana G. S. Cruz, Vádila G. Guerra, Mônica L. Aguiar   +3 more
doaj   +1 more source

First-principles method for high-$Q$ photonic crystal cavity mode calculations [PDF]

, 2012
We present a first-principles method to compute radiation properties of ultra-high quality factor photonic crystal cavities. Our Frequency-domain Approach for Radiation (FAR) can compute the far-field radiation pattern and quality factor of cavity modes $
Akahane, Bog, C. Martijn de Sterke, Chak, Chaumet, Christopher G. Poulton, Englund, Englund, Farjadpour, Galli, J.E. Sipe, Johnson, Kokou B. Dossou, Kuramochi, Lee, Lindsay C. Botten, Mandelshtam, McCutcheon, Nozaki, Portalupi, Ross C. McPhedran, Sahand Mahmoodian, Sauvan, Sipe, Song, Tomljenovic Hanic, Tomljenovic-Hanic, Tran, Yoshie, Zhang   +29 more
core   +1 more source

quality factor [PDF]

, 2014
Citation: 'quality factor' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.Q04977 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +2 more sources

QUALITY ASSESSMENT OF PASSENGER TRANSPORTATION BY URBAN TRANSPORT WHILE USING VARIOUS NUMBER OF FIXED-ROUTE TRANSPORT FACILITIES

Наука и техника, 2017
The quality of services which are offered by urban passenger transport determines a living standard of country’s inhabitants. The executed analysis of methods for quality assessment of passenger transportation service by urban transport has shown that it
I. V. Chumachenko, Yu. A. Davidich, A. S. Galkin, N. V. Davidich   +3 more
doaj   +1 more source

Low-Profile and Low-Volume Split-Distributed Resonators and Filters

IEEE Access, 2020
A new class of low-profile resonators, named split-distributed resonators is introduced in this paper. The newly proposed resonator family features high quality Q-factors and relies not only on the coupling among the constituent resonant elements, but ...
Senad Bulja, Dmitry Kozlov
doaj   +1 more source

Numerical simulations of single whispering-gallery mode enhancement in hollow cylindrical optical microcavity [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2022
In this work, a hollow cylindrical optical microcavity is numerically investigated by finite-difference time-domain simulations. Enhancement of a single whispering-gallery mode (WGM) is realized by inserting a periodic hole array into the hollow ...
Unchittha Prasatsap, Suwit Kiravittaya
doaj   +1 more source

Improving the psychological evaluation of exercise referral: psychometric properties of the Exercise Referral Quality of Life Scale [PDF]

, 2015
There is a growing need to assess the psychological outcomes of exercise referral and the National Institute of Health and Care Excellence has called for the routine assessment of life-quality.
Bauman AE, Biddle SJH, Brukner PD, Costello AB, Department of Health (DH), Department of Health (DH), Department of Health (DH), Department of Health (DH), Department of Health (DH), Department of Health (DH), Department of Health (DH), Garrett NA, Health Survey for England (HSE), Health Survey for England (HSE), Health Survey for England (HSE), Hilton CE, Hunt SM, Marsh HW, Miller WR, Morgan O, National Institute for Health and Clinical Excellence (NICE), National Institute for Health and Clinical Excellence (NICE), National Institute for Health and Clinical Excellence (NICE), National Institute for Health and Clinical Excellence (NICE), Riddoch C, Schunemann HJ, Spielberger CD, Ware JEJ, Yu CY   +28 more
core   +2 more sources

Understanding Quality Factor Degradation in Superconducting Niobium Cavities at Low Microwave Field Amplitudes. [PDF]

Physical Review Letters, 2017
In niobium superconducting radio frequency (SRF) cavities for particle acceleration, a decrease of the quality factor at lower fields-a so-called low field Q slope or LFQS-has been a long-standing unexplained effect.
A. Romanenko, David Schuster
semanticscholar   +1 more source

Strain Effect Study on Mode Field Diameter and Effective Area of WII Type Single Mode Optical Fiber

Advanced Electromagnetics, 2016
In this article, the effect of strain on mode field diameter (MFD) and effective area (Aeff) in a modern multilayer WII type single mode optical fiber is investigated.
S. Makouei, F. Makouei
doaj   +1 more source

Micromechanically Tunable Dielectric Rod Resonator [PDF]

International Journal of Electronics and Telecommunications, 2021
A resonant frequency control method for dielectric rod resonators is discussed. A dielectric rod of cylindrical shape is placed inside a metal cavity. The bottom face of the dielectric rod is fixed at the metal base plate.
Kostiantyn Savin, Irina Golubeva, Victor Kazmirenko, Yuriy Prokopenko, Guy A.E. Vandenbosch   +4 more
doaj   +1 more source