نتایج جستجو برای: temperature coefficient

تعداد نتایج: 606970  

2009
Olívia M Berengue AlexandreJC Lanfredi Livia P Pozzi JoséFQ Rey Edson R Leite Adenilson J Chiquito

In this work, we present transport measurements of individual Sn-doped In2O3nanowires as a function of temperature and magnetic field. The results showed a localized character of the resistivity at low temperatures as evidenced by the presence of a negative temperature coefficient resistance in temperatures lower than 77 K. The weak localization was pointed as the mechanism responsible by the n...

2015
James Allan Zahir Dehouche Sinisa Stankovic

Nomenclature Ac collector area (m 2) Cb bond conductance (W/m·K) Cp specific heat (J/K·kg) De external pipe diameter (m) Di internal pipe diameter (m) FR heat removal factor hfi heat transfer coefficient (W/m 2·K) k thermal conductivity (W/m·K) ṁ mass flow rate (kg/sec) Qu useful energy per unit time (W) Ta ambient temperature (°C) Tpm average plate temperature (°C) UL overall heat loss coeffic...

2005
TIGANG NING LI PEI YAN LIU ZHONGWEI TAN QI WANG JINGJING ZHENG SHUISHENG JIAN

A temperature-compensated material of fiber Bragg grating (FBG), which has negative thermal -expansion coefficient has been presented. The temperature coefficient of FBGs’ center wavelength is less than 0.0005 nm/°C after three-layer-structure temperature-compensated package under tension. For the first time, PMD of FBG with and without temperature compensation has been detailedly studied and m...

Journal: :Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria 2008
Edna Clara Tucci Angelo P do Prado Raquel Pires de Araújo

The thermal requirements for development of Dermanyssus gallinae were studied under laboratory conditions at 15, 20, 25, 30 and 35 degrees C, a 12h photoperiod and 60-85% RH. The thermal requirements for D. gallinae were as follows. Preoviposition: base temperature 3.4 degrees C, thermal constant (k) 562.85 degree-hours, determination coefficient (R(2)) 0.59, regression equation: Y= -0.006035 +...

1999
M Almasri D P Butler Roman Sobolewski

At room temperature, YBCO possesses a relatively high temperature coefficient of resistance, −3.5% K−1, and a high pyroelectric coefficient, up to 20 μC cm−2 K−1. In this work, we report on the cryogenic characterization of semiconducting Y–Ba–Cu–O thin films on substrates in response to 100 fs optical pulses at 810 nm and suspended thin film pixels in response to chopped broadband infrared rad...

Journal: :Rel. Eng. & Sys. Safety 2012
Tibor Nagy Tamás Turányi

Many articles have been published on the uncertainty analysis of high temperature gas kinetic systems that are based on detailed reaction mechanisms. In all these articles a temperature independent relative uncertainty of the rate coefficient is assumed, although the chemical kinetics databases suggest temperature dependent uncertainty factors for most of the reactions. The temperature dependen...

2017
U Sassi R Parret S Nanot M Bruna S Borini D De Fazio Z Zhao E Lidorikis F H L Koppens A C Ferrari A Colli

There is a growing number of applications demanding highly sensitive photodetectors in the mid-infrared. Thermal photodetectors, such as bolometers, have emerged as the technology of choice, because they do not need cooling. The performance of a bolometer is linked to its temperature coefficient of resistance (TCR, ∼2-4% K-1 for state-of-the-art materials). Graphene is ideally suited for optoel...

2013
Lunyong Zhang Y. B. Chen Jian Zhou Shan-Tao Zhang Zheng-bin Gu Shu-Hua Yao Yan-Feng Chen

Spin orbit coupling plays a non-perturbation effect in many recently developed novel fields including topological insulators and spin-orbit assistant Mott insulators. In this paper, strongly temperature-dependent spin orbit coupling, revealed by weak anti-localization, is observed at low temperature in 5d strongly correlated compound, SrIrO3. As the temperature rising, increase rate of Rashba c...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید