نتایج جستجو برای: temperature rise
تعداد نتایج: 579155 فیلتر نتایج به سال:
It is difficult to predict the heating time and power consumption associated with the self-heating process of lithium-ion batteries at low temperatures. A temperature-rise model considering the dynamic changes in battery temperature and state of charge is thus proposed. When this model is combined with the ampere-hour integral method, the quantitative relationship among the discharge rate, heat...
The effect of increase ambient temperature and sunlight on the temperatures of the rabbit lens and posterior chamber (PC) aqueous humour was measured by needle thermistor probes while the rectal temperature was monitored. Exposure of rabbits to sunlight (35 degrees-42 degrees C), in New Haven, Connecticut, USA, resulted in significant temperature increases in PC (4.3 degrees C), lens (3.2 degre...
This paper reports the use of a novel thermometry technique, scanning Joule expansion microscopy (SJEM), to study the steady state and dynamic thermal behavior of small geometry vias under sinusoidal and pulsed current stress for the first time. Spatial distribution of temperature rise surrounding a sub-micron via has been determined and the corresponding temperature contour image has been extr...
OBJECTIVE We determined the effects of coupling medium temperature on the rate of intramuscular temperature rise (RTR) during continuous ultrasound. DESIGN AND SETTING Ultrasound was applied in a continuous mode at a frequency of 1 MHz and intensity of 1.5 W/cm(2). Each subject received 3 treatments, using water-based coupling gel at temperatures of 18 degrees C, 25 degrees C, and 39 degrees ...
Temperature and CO2 are two important parameters related to climate change, which affect crop yield. In this study, an attempt has been made to assess the impact of these two factors on the productivity of the four major cereal food crops (wheat, rice, maize and pearl millet) taking New Delhi as study area. This study also aims at identifying the most sensitive growth phase of these crops to th...
This paper uses quasi-steady molecular statics model and diamond tool to carry out simulation temperature rise of nanoscale orthogonal cutting single-crystal silicon. It further qualitatively analyzes temperature field of silicon workpiece without considering heat transfer and considering heat transfer. This paper supposes that the temperature rise of workpiece is mainly caused by two heat sour...
the interaction between sea and atmosphere has profound effects on the regions climate. meanwhile, the sea surface temperature is considered as one of the most effective components of water bodies, and the controller of many atmospheric behaviors. because of the importance of sea surface temperatures effects on atmospheric elements and also given the role of global warming on land and sea surfa...
Biological effects due to RF whole-body exposure can be caused by core temperature rise. According to safety guidelines, therefore, whole-body averaged specific absorption rate (WBA-SAR) is being used as a metric for human protection. The threshold level causing thermal effects was determined based on animal experimental results. In order to investigate the relationship between WBA-SAR and core...
The two most characteristic properties of an ultrasonic wave are the frequency and the power. It is therefore important to determine the power in a given reactor. This can be done by calorimetry, i.e. by measuring the temperature rise in the vessel during sonication starting at thermal equilibrium with the surroundings (classic calorimetry) [1-3]. However, the classic ultrasonic calorimetry has...
E ARLIER investigations ' 2 with mammalian heart muscle have shown that the resting potential drops only slightly when the temperature is lowered from 37 to 20 C , but decreases considerably upon further cooling. Coraboeuf and Weidmann suggested 3 possible explanations for the depolarization in the cold: (1) a rise of the Na permeability relative to the K and Cl permeabilities of the fiber memb...
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