نتایج جستجو برای: temperature variation

تعداد نتایج: 729561  

ژورنال: تحقیقات موتور 2019
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This research proposes the effect of temperature variation in the Prandtl number on the power, the efficiency and the heat loss of the Gama-type Stirling engine. It should be noted that the Prandtl number included the viscosity, the thermal conductivity coefficient and the specific heat at constant pressures of the working fluid, which the temperature dependency of such first two thermo-dynamic...

Seasonal variation in water quality of Anchar Lake was evaluated using multivariate statistical techniques- principal component analysis (PCA) and cluster analysis (CA). Water quality data collected during 4 seasons was analyzed for 13 parameters. ANOVA showed significant variation in pH (F3 = 10.86, P < 0.05), temperature (F3 = 65, P

Journal: Pollution 2017

Seasonal variation in water quality of Anchar Lake was evaluated using multivariate statistical techniques- principal component analysis (PCA) and cluster analysis (CA). Water quality data collected during 4 seasons was analyzed for 13 parameters. ANOVA showed significant variation in pH (F3 = 10.86, P < 0.05), temperature (F3 = 65, P

2005
Claude PIEAU Marc GIRONDOT Gisèle DESVAGES Mireille DORIZZI Noëlle RICHARD-MERCIER Patrick ZABORSKI

A, androstenedione Arom, aromatase AMH, anti Müllerian hormone cAMP, adenosine 3': 5'cyclic monophosphate DHT, dihydrotestosterone E, estrogen E1, estrone E2, estradiol 17B ER, estrogen receptor FT, female-producing temperature 3B-HSD, 3B-hydroxysteroid dehydrogenase-5-ene-4-ene isomerase 17B-HSD, 17B-hydroxysteroid dehydrogenase hsp, heat-shock protein MT, male-producing temperature P 450 arom...

2008
Ranjith Kumar Volkan Kursun

The imbalanced utilization and the diversity of circuitry cause on-chip temperature gradients. Different sections of high-performance integrated circuits typically operate at different temperatures. Furthermore, environmental temperature fluctuations can cause significant variations in the die temperature. Temperature fluctuations alter the speed characteristics of CMOS circuits. Several techni...

Journal: :Physics in medicine and biology 2004
Tsang Cheung Martin J Butson Peter K N Yu

This note investigates temperature effects on dosimetry using a metal oxide semiconductor field effect transistor (MOSFET) for radiotherapy x-ray treatment. This was performed by analysing the dose response and threshold voltage outputs for MOSFET dosimeters as a function of ambient temperature. Results have shown that the clinical semiconductor dosimetry system (CSDS) MOSFET provides stable do...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ملایر - دانشکده علوم 1392

the control of the configuration of the nise nanostructural thin films with temperature

2015
Matt N. Williams Stephen R. Hill John Spicer

The effect of environmental temperature on suicide risk is an important issue given the increase in global temperatures expected over the following century. Previous research has produced conflicting findings: Studies concerned with temporal variation in temperature and suicide have tended to find a positive relationship, while those concerned with geographical variation in temperature and suic...

2009
EDWARD A. SPIEGEL

Dicke and Goldenberg's oblateness measurement may be explained by an equatorial temperature excess of 30° K, smoothly distributed in optical depths :::;o 01 The resulting brightness variation with solar latitude is concentrated close to the limb, and it is not possible, with data presently available, to distinguish such variation from true oblateness

2008
Gregory J. Ragland Joel G. Kingsolver

Hypothesis: The effects of temperature variation on life-history traits depend on both mean developmental temperature and geographic population of origin. Organism: Pitcher plant mosquitoes, Wyeomyia smithii. Field sites: We established laboratory colonies from three geographic populations spanning a latitudinal and altitudinal gradient in eastern North America. Sites at lower latitudes or alti...

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