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Relevant bibliographies by topics / Temperature-related- thermal effects

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Academic literature on the topic 'Temperature-related- thermal effects'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Temperature-related- thermal effects"

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Hüseyin, Fırat KAYIRAN. "Usabilitiy of Chebyshev Pseudospectral method with finite element method on circular discs." Asia Mathematika 6, no. 1 (2022): 46——53. https://doi.org/10.5281/zenodo.6580397.

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In this study, the thermal stress behavior of a disk modeled under a linear increasing temperature distribution is investigated. The temperature limit conditions are determined as 30°C, 40°C, 50°C, 60°C and 70°C. The stresses were determined analytically using a computer program developed in the study, using the Finite element method (FEM) ANSYS (2022-R1) program, and using the Psedudospectral Chebyshev method. With the Chebyshev method, high-precision solutions can be obtained using a small number of braids. The main purpose of this study is to investigate the th

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Liu, Hao, Xia Sheng Sun, and Xiao Dong Li. "Modal Analysis of Wing Considering Transient Thermal Effects." Applied Mechanics and Materials 444-445 (October 2013): 1400–1406. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.1400.

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The severe aerodynamic heating on the surface of modern hypersonic flight vehicle, that can bring high temperature and large temperature gradients in the structure of the vehicle, will be a challenge for the vehicles design and multidisciplinary optimization. The transient thermal environment consists of high temperature and large temperature gradients will generate two important problems related to vehicle structure, namely: 1) the material property, such as elastic modulus, will be degraded at elevated temperature, and 2) the non-uniform thermal stress cased by large temperature gradients wi

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Maes, Marc A., Walter H. Dilger, and Peter D. Ballyk. "Extreme values of thermal loading parameters in concrete bridges." Canadian Journal of Civil Engineering 19, no. 6 (1992): 935–46. http://dx.doi.org/10.1139/l92-112.

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The present paper addresses the question of developing design criteria for thermal effects in concrete bridges. The objective is to determine extreme temperature effects having specified return periods. The parameters of the local meteorological regime which critically affect the extreme thermal effects are identified. Their variation in time is analyzed and related to the thermal loading parameters in a concrete bridge. These include average temperature, temperature difference between sections, linear temperature differential, and residual temperature fields. The analysis of the extreme value

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Förster, Andrea, J. Schrötter, D. F. Merriam, and David D. Blackwell. "Application of optical‐fiber temperature logging—An example in a sedimentary environment." GEOPHYSICS 62, no. 4 (1997): 1107–13. http://dx.doi.org/10.1190/1.1444211.

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Continuous‐temperature depth logs, especially when recorded in boreholes under thermal equilibrium conditions, provide detailed information of the subsurface thermal structure, which is necessary for the determination of reliable heat‐flow and rock thermal properties. In conjunction with independent thermal‐conductivity determinations, thermal logging data also allow the separation of heat conduction effects from thermal convection effects by fluid flow driven by various pressure differences such as pore fluid pressure. The Earth's thermal field is related intimately to geothermal resources an

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Yuan, Meng, Hanlin Yin, Yitong Liu, Xiaohua Wang, Long Yuan, and Yu Duan. "Synergistic Electric and Thermal Effects of Electrochromic Devices." Micromachines 13, no. 12 (2022): 2187. http://dx.doi.org/10.3390/mi13122187.

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Electrochromic devices are the preferred devices for smart windows because they work independently of uncontrollable environmental factors and rely more on the user’s personal feelings to adjust actively. However, in practical applications, the ambient temperature still has an impact on device performance, such as durability, reversibility and switching performance, etc. These technical issues have significantly slowed down the commercialization of electrochromic devices (ECDs). It is necessary to investigate the main reasons for the influence of temperature on the device and make reasonable o

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Wei, Yuehua, Zhenhua Wei, Xiaoming Zheng, et al. "Stress Effects on Temperature-Dependent In-Plane Raman Modes of Supported Monolayer Graphene Induced by Thermal Annealing." Nanomaterials 11, no. 10 (2021): 2751. http://dx.doi.org/10.3390/nano11102751.

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The coupling strength between two-dimensional (2D) materials and substrate plays a vital role on thermal transport properties of 2D materials. Here we systematically investigate the influence of vacuum thermal annealing on the temperature-dependence of in-plane Raman phonon modes in monolayer graphene supported on silicon dioxide substrate via Raman spectroscopy. Intriguingly, raising the thermal annealing temperature can significantly enlarge the temperature coefficient of supported monolayer graphene. The derived temperature coefficient of G band remains mostly unchanged with thermal anneali

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OSIŃSKI, MAREK, and WŁODZIMIERZ NAKWASKI. "THERMAL EFFECTS IN VERTICAL-CAVITY SURFACE-EMITTING LASERS." International Journal of High Speed Electronics and Systems 05, no. 04 (1994): 667–730. http://dx.doi.org/10.1142/s0129156494000267.

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A comprehensive review of temperature-related effects and thermal modeling of vertical-cavity surface-emitting lasers (VCSELs) is presented. The paper is divided into two major parts. First, the effects of temperature on device characteristics are discussed, including the temperature dependence of the longitudinal mode spectra, the threshold current, the transverse-mode structure, and the output power. A new condition is formulated for thermal matching of the Bragg mirrors and the spacer region and a comparison is made between characteristic temperatures for the threshold current (T0) and for

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Kallis, James, William Hammond, and Edwin Curry. "Stress Screening of Electronic Modules: An Investigation of the Effects of Temperature Rate of Change." Journal of the IEST 33, no. 2 (1990): 60–65. http://dx.doi.org/10.17764/jiet.2.33.2.k755x16667v566h0.

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A study was conducted to investigate the effects of temperature rate of change on the environmental stress screening (ESS) of printed wiring assemblies (PWA). The related effects of chamber air velocity and temperature dwell time on module temperature response also were evaluated. Tests were conducted to investigate the effects of varying thermal cycling parameter levels. The effects of various chamber air temperature rates of change and velocity levels on the temperature responses of two vastly different PWAs were measured. A thermal cycling analysis of a PWA of the same construction as one o

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Baldo, J. B., and W. N. dos Santos. "Phase transitions and their effects on the thermal diffusivity behaviour of some SiO2 polymorphs." Cerâmica 48, no. 307 (2002): 172–77. http://dx.doi.org/10.1590/s0366-69132002000300011.

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Thermal diffusivity is a material physical property important in all problems involving non-steady state heat transfer calculations, being a decisive parameter in the response of materials subjected to thermal shock. In this work it is presented a fundamental study related to how the phase transitions may influence the thermal diffusivity behaviour as a function of temperature in the phase transforming SiO2. The experimental technique employed was the flash thermal diffusivity technique, and measurements were carried out from 100 ºC up to approximately 1200 ºC. It was found a strong dependence

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Demarchi, M. W., and F. L. Bunnell. "Estimating forest canopy effects on summer thermal cover for Cervidae (deer family)." Canadian Journal of Forest Research 23, no. 11 (1993): 2419–26. http://dx.doi.org/10.1139/x93-299.

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Operative temperatures of five members of the deer family under different forest canopies during summer were estimated. Sky view factors and effective leaf area indices were obtained from hemispherical photography. These were combined with radiation regime, ambient air temperature, wind speed, and other relevant factors to obtain operative temperature. Upper critical temperatures were significantly related to operative temperature in the open (r2 = 0.65; p < 0.05). To assess the thermal cover value of different canopy closures, simultaneous operative-temperature values as a function of cano

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Books on the topic "Temperature-related- thermal effects"

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Ralph E. (Ralph Early) 1902- J. Grim and William Frank 1908 Bradley. High Temperature Thermal Effects of Clay and Related Materials; Report of Investigations No. 154. Creative Media Partners, LLC, 2021.

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Human Thermal Comfort. Taylor & Francis Group, 2019.

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Parsons, Ken. Human Thermal Comfort. Taylor & Francis Group, 2019.

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Parsons, Ken. Human Thermal Comfort. Taylor & Francis Group, 2019.

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Parsons, Ken. Human Thermal Comfort. Taylor & Francis Group, 2019.

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Parsons, Ken. Human Thermal Comfort. Taylor & Francis Group, 2019.

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Horing, Norman J. Morgenstern. Quantum Mechanical Ensemble Averages and Statistical Thermodynamics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198791942.003.0006.

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Chapter 6 introduces quantum-mechanical ensemble theory by proving the asymptotic equivalence of the quantum-mechanical, microcanonical ensemble average with the quantum grand canonical ensemble average for many-particle systems, based on the method of Darwin and Fowler. The procedures involved identify the grand partition function, entropy and other statistical thermodynamic variables, including the grand potential, Helmholtz free energy, thermodynamic potential, Gibbs free energy, Enthalpy and their relations in accordance with the fundamental laws of thermodynamics. Accompanying saddle-poin

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Book chapters on the topic "Temperature-related- thermal effects"

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Piazena, H., W. Müller, and Peter Vaupel. "Glossary Used in wIRA-Hyperthermia." In Water-filtered Infrared A (wIRA) Irradiation. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92880-3_1.

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AbstractWhen tissue heating with water-filtered infrared A irradiation (wIRA) is used, an exact terminology and compliance with the International System of Units (SI) are mandatory. In order to avoid misconceptions and confusion of readers/users, a glossary of basic physical terms and SI-based radiometry is presented in this chapter. Recommendations-inter alia-include: (1) terms and tools to characterize the spectrum of infrared irradiation, (2) terms and parameters of wIRA emitted by a device and incident on the surface of an exposed object, (3) terms quantifying absorption, transmittance, sc

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Xu, Liu-Jun, and Ji-Ping Huang. "Theory for Thermal Wave Nonreciprocity: Angular Momentum Bias." In Transformation Thermotics and Extended Theories. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5908-0_20.

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AbstractIn this chapter, we demonstrate that an angular momentum bias generated by a volume force can also lead to modal splitting in convection-diffusion systems but with different features. We further reveal the thermal Zeeman effect by studying the temperature field propagation in an angular-momentum-biased ring with three ports (one for input and two for output). With an optimal volume force, temperature field propagation is allowed at one output port but isolated at the other, and the rectification coefficient can reach a maximum value of 1. The volume forces corresponding to the rectific

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Xu, Liu-Jun, and Ji-Ping Huang. "Theory for Diffusive Fizeau Drag: Willis Coupling." In Transformation Thermotics and Extended Theories. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5908-0_15.

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AbstractIn this chapter, we design a spatiotemporal thermal metamaterial based on heat transfer in porous media to demonstrate the diffusive analog to Fizeau drag. The space-related inhomogeneity and time-related advection enable the diffusive Fizeau drag effect. Thanks to the spatiotemporal coupling, different propagating speeds of temperature fields can be observed in two opposite directions, thus facilitating nonreciprocal thermal profiles. The phenomenon of diffusive Fizeau drag stands robustly even when the advection direction is perpendicular to the propagation of temperature fields. The

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Wegner, Tim, Martin Gag, and Dirk Timmermann. "Efficiency Analysis of Approaches for Temperature Management and Task Mapping in Networks-on-Chip." In Advances in Systems Analysis, Software Engineering, and High Performance Computing. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-6034-2.ch015.

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With the progress of deep submicron technology, power consumption and temperature-related issues have become dominant factors for chip design. Therefore, very large-scale integrated systems like Systems-on-Chip (SoCs) are exposed to an increasing thermal stress. On the one hand, this necessitates effective mechanisms for thermal management and task mapping. On the other hand, application of according thermal-aware approaches is accompanied by disturbance of system integrity and degradation of system performance. In this chapter, a method to predict and proactively manage the on-chip temperatur

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Newnham, Robert E. "Galvanomagnetic and thermomagnetic phenomena." In Properties of Materials. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198520757.003.0022.

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The Lorentz force that a magnetic field exerts on a moving charge carrier is perpendicular to the direction of motion and to the magnetic field. Since both electric and thermal currents are carried by mobile electrons and ions, a wide range of galvanomagnetic and thermomagnetic effects result. The effects that occur in an isotropic polycrystalline metal are illustrated in Fig. 20.1. As to be expected, many more cross-coupled effects occur in less symmetric solids. The galvanomagnetic experiments involve electric field, electric current, and magnetic field as variables. The Hall Effect, transve

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Zhou, Hongxuan, Chenrui Wang, and Xinye Yan. "Temperature Effects of Greening-Related Indices: A Case Study in China University of Mining and Technology in Xuzhou City, China." In Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde230357.

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In order to regulate the urban thermal environment, scientific greening has become a hot spot in many fields. In this study, a mobile meteorological station and infrared thermal imaging camera were used to collect air temperature (Ta) and land surface temperature (TS) in various green spaces at the China University of Mining and Technology in the summer of 2020. Greening indices were obtained via field investigation and analyzed with Ta and TS statistically. The results showed that green view index, tree coverage (TC), and green volume were negatively correlated to both Ta and TS (P<0.05);

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He, Guang S. "Stimulated Raman Scattering." In Laser Stimulated Scattering and Multiphoton Excitation. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780192895615.003.0004.

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The gain of stimulated Raman scattering (SRS) is based on the fact that the photon degeneracy of the pump beam (n¯p) and that of the scattering beam (n¯s) can be both >> 1, and therefore the latter can be increased exponentially. The SRS can be generated in both forward and backward directions. Owing to Raman resonance-enhanced refractive-index change, the self-focusing effect, the four-wave frequency mixing (FWFM) effect, the spectral broadening effect, and the opto-thermal influence-induced self-defocusing effect may take place during the SRS processes. These additional effects can be

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Abreu-Harbich, Loyde Vieira de, Giovana Gravellos Dias Starke Rodrigues, Pérola Felipette Brocaneli, Carolina de Rezende Maciel, and Sasquia Hizuru Obata. "Influence of Thermal Comfort provided by Tree Shadows on sidewalks in Downtown São Paulo." In A ERA AMBIENTAL: Do edifício à cidade. Even3 Publicações, 2022. http://dx.doi.org/10.29327/5141261.1-1.

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Environmental quality of sidewalks influenced physical activity practices in public areas to prevent diseases related of sedentary lifestyle. Tree and its air thermoregulation capacity can modify microclimate conditions that affect people's daily behavior. To promote the thermal comfort on streets, it is necessary to design urban areas with trees and cool materials that can mitigate effects of heat islands. This work aims to evaluate the influence of thermal comfort in different urban landscapes on pedestrian walkability. Methodology: a) selection of route based on a transect that crosses diff

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Furbish, David Jon. "Thermodynamic Properties of Fluids." In Fluid Physics in Geology. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195077018.003.0008.

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Fluid behavior in many geological problems is strongly influenced by extant thermal conditions and flow of heat. Recall, for example, that the coefficient A in Glen’s law for ice (3.40) varies over three orders of magnitude with a change in temperature of 50 °C. The effect of this is to strongly modulate the rate of ice deformation for a given level of stress. Recall further that we introduced several fluid properties—fluid compressibility, for example—where we asserted that our purely mechanical developments were incomplete inasmuch as they did not treat effects of varying temperature. The re

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Silva, Jerson L., and Andrea T. Da Poian. "Pressure and Cold Denaturation of Proteins, Protein-DNA Complexes, and Viruses." In High Pressure Effects in Molecular Biophysics and Enzymology. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195097221.003.0013.

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The application of hydrostatic pressure provides a means of appraising interprotein and intraprotein interactions isothermally and makes it possible to sample partially folded conformations. A number of proteins exhibit cold denaturation and cold dissociation. We have used the combined effects of pressure and low temperature to promote dissociation or denaturation of single-chain proteins, oligomers, protein-DNA complexes, and viruses. In this article, we summarize results that have biological relevance. The dissociation and denaturation of the hexameric protein, allophycocyanin, are accomplis

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Conference papers on the topic "Temperature-related- thermal effects"

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Haile, Tesfaalem, John Wolodko, Rio Wilkie, and Haralampos Tsaprailis. "Corrosion of Brackish Water Systems Used for In-Situ Thermal Operations." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05444.

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Abstract Water plants constructed to process brackish and fresh water sources for in-situ thermal oil sands production have noted failures associated with corrosion. The approach to resolve observed problems may depend on the local or upstream operating conditions, and may involve improved monitoring capabilities, additions of chemicals, and/or material selections. The unpredictable occurrences of serious corrosion issues related to the complex water chemistry make it difficult to choose the appropriate preventative and mitigation measures. This is further complicated by the effects of tempera

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Haile, Tesfaalem, John Wolodko, Lisa Sopkow, Haralampos Tsaprailis, and Leonard Choi. "Corrosivity of Produced and Make-up Water in Oil Sands Thermal Water Treatment Systems." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07184.

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Abstract Water treatment systems used to recycle produced water and/or make-up water for the production of steam used in the SAGD and CSS processes have noted failures associated with erosion-corrosion, under deposit corrosion, and fouling/scaling. Oil sands operators employ corrosion monitoring tools, chemical treatment, and/or material selection to resolve integrity related issues. However, the unpredictable occurrences of serious corrosion issues related to the complex and constantly changing water chemistries make it difficult to choose the appropriate preventative and mitigation strategie

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Skattum, Gordon A. "Estimating Thermal Effects for Granite Surface Plate Calibration." In NCSL International Workshop & Symposium. NCSL International, 2014. http://dx.doi.org/10.51843/wsproceedings.2014.31.

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SME B89.3.7-2013, Granite Surface Plates, is a revision of the 1973 Federal Specification GGG-P-463c which has been used exclusively in American industry since its publication as the standard for calibration practices. Accredited and non-accredited calibration services cite compliance to the Federal Specification and are now becoming aware of the new ASME replacement. The calibration and acceptance of overall flatness for new certification, recertification in the field, and recertification after resurfacing is highly influenced by temperature variation and spatial thermal gradients. However, a

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Archer, Sean, and Ashwani K. Gupta. "Swirl Distribution Effects on the Thermal Characteristics of Premixed Flames." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/cie-21676.

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Abstract An experimental investigation has been carried out on four premixed flames using a double concentric swirl burner. The influence of radial distribution of swirl on the global flame behavior, thermal and emission characteristics have been determined. Temperature data was compensated with time constant data to generate mean and fluctuating temperature maps, probability density distributions of temperature, power spectra and thermal integral- and micro-time scales in the flames. Direct flame photographs were taken to archive flame shape and light intensity. These data provided valuable i

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De Giorgi, Maria Grazia, Daniela Bello, and Antonio Ficarella. "Analysis of Thermal Effects in a Cavitating Orifice Using Rayleigh Equation and Experiments." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75960.

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The focus of this research is the experimental and analytical study of the cavitation phenomena in internal flows in presence of thermal effects. Experiments have been done on water and nitrogen cavitating flow in orifices. Transient growth process of the cloud cavitation induced by flow through the throat is observed using high-speed video images and analyzed by pressure signals. Cavitation of thermo-sensible fluid, as cryogenic fluid, presents additional complexities (as compared to that in water) because thermal effects are important. The different cavitating behavior at different temperatu

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Baquedano, J. A., and J. M. Cabrera. "Spectroscopy of photorefractive centres in Bi12SiO20." In Photorefractive Materials, Effects, and Devices II. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/pmed.1990.b2.

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The spectroscopy of several centres in Bi12SiO20 which are related to its photorefractive behaviour will be presented and discussed. In a recent paper, the spectral dependence of the photorefractive erasure by using the holographic method has been studied [1]. Two major absorption bands producing photorefractive erasure were found, their peak positions and halfwidths respectively being 2.7 eV (0.27 eV) and 3.1 eV (0.4 eV). These bands were obtained by numerically fitting the experimental decay constants for each erasing wavelength to those predicted by a two centre model [2] in which fast carr

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Smith, H., M. Soldal, L. Grande, and L. Griffiths. "Effect of Thermal Cycling on Cemented Sandstone in Relation to CCS." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0797.

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ABSTRACT: As widespread Carbon Capture and Sequestration becomes more relevant, challenges related to thermal cooling upon injection and the potential for significant stress perturbation needs to be accounted for in geomechanical modelling. The current work shows an example of how temperature fluctuations related to CO2 injection can affect the stress changes within a reservoir using a stiff cemented sandstone analogue for deep reservoirs, and further demonstrates how a laboratory test program can be efficiently used to better define thermal aspects of typical geomechanical parameters such as

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Azevedo, C. T., M. P. Schwalbert, and L. F. Neumann. "Thermal Effects Reducing Minimum in Situ Stress Can Happen Faster Than You Think." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0937.

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ABSTRACT It is known that when fluids are injected into an offshore well, the temperature of the injected fluid is typically cooler than the in-situ reservoir temperature. A region of cooled rock forms around the well and this cooled region contracts, leading to a decrease in horizontal in situ stresses near the well. Such effect is always related with waterflooding or other secondary or tertiary recovery processes in long period of time, such as days or months of injection. This article will show field evidence that thermal effects can happen in a few minutes or in a couple of hours, in forma

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Gao, Yin, and Mike McHenry. "Simulation of the Thermal Effects on Engineered Polymer Composite Ties." In 2019 Joint Rail Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/jrc2019-1299.

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Engineered polymer composite (EPC) ties offer a potential alternative to solid sawn timber ties. These materials are especially attractive for use in regions where wood is susceptible to degradation by moisture and decay organisms. However, recent research at the Transportation Technology Center’s (TTC) Facility for Accelerated Service Testing (FAST) in Pueblo, CO, found that track supported by EPC ties experienced more gage widening variation due to temperature changes than track supported by wood ties. Specifically, the track gage was about 0.2-in. wider in the afternoon than that in the mor

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Wu, Chung_sheng, Chuan-Hsien Kuo, and Wen-Jei Yang. "Effects of Thermal Expansion on Surface Error in Metal Cutting." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1810.

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Abstract An experimental study is performed to measure thermal expansion and surface roughness of 6061 aluminum workpiece subjected to a cutting process in turning on a lathe. Four capacitance probes are used to detect changes in the air gap between the probes and the surface of the workpiece during the machining process, and after the workpiece is cooled down to the initial temperature. The signal output from the probes is filtered before being fed into a data acquisition system. Operational conditions are varied. The thermal expansion-time history of the workpiece is obtained at different lo

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Reports on the topic "Temperature-related- thermal effects"

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DiDomizio, Matthew, and Jonathan Butta. Measurement of Heat Transfer and Fire Damage Patterns on Walls for Fire Model Validation. UL Research Institutes, 2024. http://dx.doi.org/10.54206/102376/hnkr9109.

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Fire models are presently employed by fire investigators to make predictions of fire dynamics within structures. Predictions include the evolution of gas temperatures and velocities, smoke movement, fire growth and spread, and thermal exposures to surrounding objects, such as walls. Heat flux varies spatially over exposed walls based on the complex thermal interactions within the fire environment, and is the driving factor for thermally induced fire damage. A fire model predicts the temperature and heat transfer through walls based on field predictions, such as radiative and convective heat fl

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Yahav, Shlomo, John McMurtry, and Isaac Plavnik. Thermotolerance Acquisition in Broiler Chickens by Temperature Conditioning Early in Life. United States Department of Agriculture, 1998. http://dx.doi.org/10.32747/1998.7580676.bard.

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The research on thermotolerance acquisition in broiler chickens by temperature conditioning early in life was focused on the following objectives: a. To determine the optimal timing and temperature for inducing the thermotolerance, conditioning processes and to define its duration during the first week of life in the broiler chick. b. To investigate the response of skeletal muscle tissue and the gastrointestinal tract to thermal conditioning. This objective was added during the research, to understand the mechanisms related to compensatory growth. c. To evaluate the effect of early thermo cond

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Friedman, Shmuel, Jon Wraith, and Dani Or. Geometrical Considerations and Interfacial Processes Affecting Electromagnetic Measurement of Soil Water Content by TDR and Remote Sensing Methods. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580679.bard.

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Time Domain Reflectometry (TDR) and other in-situ and remote sensing dielectric methods for determining the soil water content had become standard in both research and practice in the last two decades. Limitations of existing dielectric methods in some soils, and introduction of new agricultural measurement devices or approaches based on soil dielectric properties mandate improved understanding of the relationship between the measured effective permittivity (dielectric constant) and the soil water content. Mounting evidence indicates that consideration must be given not only to the volume frac

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Brosh, Arieh, David Robertshaw, Yoav Aharoni, Zvi Holzer, Mario Gutman, and Amichai Arieli. Estimation of Energy Expenditure of Free Living and Growing Domesticated Ruminants by Heart Rate Measurement. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580685.bard.

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Research objectives were: 1) To study the effect of diet energy density, level of exercise, thermal conditions and reproductive state on cardiovascular function as it relates to oxygen (O2) mobilization. 2) To validate the use of heart rate (HR) to predict energy expenditure (EE) of ruminants, by measuring and calculating the energy balance components at different productive and reproductive states. 3) To validate the use of HR to identify changes in the metabolizable energy (ME) and ME intake (MEI) of grazing ruminants. Background: The development of an effective method for the measurement of

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Wolfenson, David, William W. Thatcher, Rina Meidan, Charles R. Staples, and Israel Flamenbaum. Hormonal and Nutritional Stretegies to Optimize Reproductive Function and Improve Fertility of Dairy Cattle during Heat Stress in Summer. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568773.bard.

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Abstract:

The BARD program includes two main parts. In the first, experiments were conducted to complete our understanding of the mechanisms responsible for the impairment of reproductive functions under heat stress. Experiments focused on follicular development and function, since results obtained in our previous BARD project indicate that the preovulatory follicle is susceptible to heat stress. The theca cells, sensitive to thermal stress, produced less androgen during the summer, as well as during the autumn. Similarly, luteinized theca cells obtained from cows in summer produced much less progestero

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