نتایج جستجو برای: absorber efficiency with porosity 00177

تعداد نتایج: 9331037  

2001
Juliana Gurgel-Giannetti Umbertina Reed Marie-Louise Bang Katarina Pelin Kati Donner Sueli K. Marie Mary Carvalho Moacir A.T. Fireman Edmar Zanoteli Acary S.B. Oliveira Mayana Zatz Carina Wallgren-Pettersson Siegfried Labeit Mariz Vainzof

Nemaline myopathy is a structural congenital myopathy which may show both autosomal dominant and autosomal recessive inheritance patterns. Mutations in three different genes have been identi®ed as the cause of nemaline myopathy: the gene for slow a-tropomyosin 3 (TPM3) at 1q22±23, the nebulin gene (NEB) at 2q21.1±q22, and the actin gene (ACTA1) at 1q42. The typical autosomal recessive form appe...

2001
Robert N. Hughes

In an investigation of recognition memory involving a preference test, hooded rats of both sexes were individually confined to the stem and choice area of a Tor Y-maze by means of clear Perspex barriers across each arm entrance that enabled the subjects to see into but not enter the arms. Following removal of the barriers and changing of one arm to opposite brightness, the first arm entered and...

Journal: :Applied optics 2002
Jason Glenn Goutam Chattopadhyay Samantha F Edgington Andrew E Lange James J Bock Philip D Mauskopf Adrian T Lee

Far-infrared to millimeter-wave bolometers designed to make astronomical observations are typically encased in integrating cavities at the termination of feedhorns or Winston cones. This photometer combination maximizes absorption of radiation, enables the absorber area to be minimized, and controls the directivity of absorption, thereby reducing susceptibility to stray light. In the next decad...

2009
N. Wyrsch A. Billet G. Bugnon M. Despeisse A. Feltrin F. Meillaud G. Parascandolo C. Ballif

.The influences of the deposition pressure and silane depletion on the efficiency of single-junction microcrystalline silicon solar cells has been investigated. The efficiency is found to correlate with the ion energy which affects the density of states in the absorber material. Cell with efficiency of 7.3% at a deposition rate of 1 nm/s, and, respectively, 7.8% at 0.35 nm/s were deposited in R...

Journal: :The Journal of the Acoustical Society of America 2011
Chunqi Wang Lixi Huang

The acoustic properties of a compound micro-perforated panel (MPP) absorber array are investigated. The absorber array consists of three parallel-arranged MPP absorbers with different cavity depths. A finite element procedure is used to simulate its acoustic behaviors under normal incidence. Experimental studies are carried out to verify the numerical simulations. Due to different reactance mat...

2013
Kuntal Jana

Flue gas from a plant using fossil fuels contains CO2. Thus power/process plants using fossil fuels contribute to climate change if CO2 in flue gas is not captured. The process of CO2 capture from flue gas is called „postcombustion‟ CO2 capture. Existing plants may be retrofitted with this process to minimize CO2 emission. Amine solutions are mostly used for this process to scrub the flue gas. ...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2014
Akito Kusaka Edward J Wollack Thomas R Stevenson

High-sensitivity receiver systems with near-ideal polarization sensitivity are highly desirable for development of millimeter and submillimeter radio astronomy. Multimoded bolometers provide a unique solution to achieve such sensitivity, for which hundreds of single-mode sensors would otherwise be required. The primary concern in employing such multimoded sensors for polarimetery is the control...

Journal: :Energies 2021

A new Selective Solar Absorber, designed to improve the Sun-to-thermal conversion efficiency at mid temperatures in high vacuum flat thermal collectors, is presented. Efficiency has been evaluated by using analytical formulas and a numerical model. Both results have experimentally validated commercial absorber custom experimental set-up. The optimization procedure aimed obtaining Absorber prese...

2012
Ahmad M. Saleh Peter Dragnev

Saleh, Ahmad M. M.S.E., Purdue University, May 2012. Modeling Of Flat-Plate Solar Collector Operation in Transient States. Major Professor: Hosni Abu-Mulaweh. Solar energy is becoming an alternative for the limited fossil fuel resources. One of the simplest and most direct applications of this energy is the conversion of solar radiation into heat, which can be used in water heating systems. A c...

Cylindrical thin-walled tubes due to construction and easy installation, high energy absorption capacity are used in the automotive industry as an impact energy absorber. However, the main weakness of cylindrical tubes is in the high initial peak load. Therefore, in this paper, to overcome this weakness, a buckling initiator is used at the top of the tube. This buckling initiator is a steel rod...

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