富硒酵母抗动物热应激的研究进展     

刘德义  贺绍君  梁林  耿广多  顾有方  李升和 《安徽科技学院学报》2014,(5)

热应激是热带、亚热带及温带地区影响畜牧业健康发展的最常见因素之一。许多国家积极采取多种措施防控热应激的发生。富硒酵母因其广泛、确实、高效的生物学特性广泛用于缓解动物热应激的研究。本文对富硒酵母在提高热应激动物生产性能、改善营养物质代谢和增强机体免疫力等方面的作用进行综述,为进一步开发利用富硒酵母缓解动物热应激提供研究基础。  相似文献   

Modelling temperature and humidity in storage spaces used for cultural property in Japan     

Masahide Inuzuka 《文物保护研究》2014,59(5):S52-S54

  相似文献   

采后热处理对蒙自石榴贮藏品质的影响     

樊爱萍  鲁丽香  刘卫 《蒙自师范高等专科学校学报》2014,(5):14-18

该篇探讨了热水处理对石榴采后常温贮藏期间主要生理和品质变化的影响.石榴经过38℃、45℃、50℃,5min、10min、15min处理,结果表明,38℃,15min热水处理可有效提高好果率,降低失重率,较好的抑制石榴采后呼吸强度、质膜相对透性,降低过氧化物酶(POD)活性,提高苯丙氨酸解氨酶(PAL)活性.实验证明热处理能有效减缓石榴品质的下降,延缓石榴采后衰老速度,有利于延长贮藏期限和保持石榴原有的风味品质.  相似文献   

智能控制加热柜热泵系统研究     

杨华 《大众科技》2014,(8):98-99

文章提出一种智能控制加热柜热泵系统的实现方案,介绍了智能控制加热柜热泵系统的结构形式,分析了智能控制加热柜热泵系统和采用的智能控制技术,在此基础上重点阐述了智能控制加热柜热泵系统设计及GPRS计算机远程监控技术的实现。  相似文献   

亚温淬火对T217钢性能的影响     

牛立群  解明  魏海东  李伟 《中国科技纵横》2014,(15):37-38

通过对亚共析钢T217钢分别采取淬火＋回火和淬火＋亚温淬火＋回火处理,探讨这两种工艺和亚温淬火的温度和保温时间对亚共析钢T217钢性能的影响,最后找出T217钢最佳亚温淬火热处理工艺。本文对于T217钢类似的钢种亚温淬火热处理工艺的制定具有一定的指导意义。  相似文献   

Research on a simulated 60 kW PEMFC cogeneration system for domestic application     

张颖颖  余晴春  曹广益  朱新坚 《浙江大学学报(A卷英文版)》2006,7(3):450-457

INTRODUCTION Distributed cogeneration technology is a hot topic in electrical and energy industries (Ferguson and Ugursal, 2004). China’s need to limit the power usage in some places to meet the peak power demand in summer of recent years stimulated and supported increasing research on distributed generation tech- nologies. Fuel cells, as renewable energy sources, are considered one of the most promising sources of distributed electrical power. Operational fuel cell systems have perform…  相似文献   

影响回转烘干机技术性能的因素及技术改造     

赵尊群  何为平  刘建寿 《洛阳工业高等专科学校学报》2007,17(5):10-12

回转烘干机广泛应用于建材工业、化学工业及矿物烘干,分析了影响回转烘干机技术性能的两类因素,一类为由转筒烘干机本身引起的因素,另一类为烘干工艺方面的因素.同时提出技术改造措施.  相似文献   

A numerical analysis to the non-linear fin problem     

Rafael Cortell 《浙江大学学报(A卷英文版)》2008,9(5):648-653

In this paper a numerical analysis is carried out to obtain the temperature distribution within a single fin. It is assumed that the heat transfer coefficient depends on the temperature. The complete highly non-linear problem is solved numerically and the variations of both, dimensionless surface temperature and dimensionless surface temperature gradient as well as heat transfer characteristics with the governing non-dimensional parameters of the problem are graphed and tabulated.  相似文献   

Coupled models of heat transfer and phase transformation for the run-out table in hot rolling   总被引：1，自引：0，他引：1  

Shui-xuan Chen  Jun Zou  Xin Fu 《浙江大学学报(A卷英文版)》2008,9(7):932-939

Mathematical models are been proposed to simulate the thermal and metallurgical behaviors of the strip occtLrring on the run-out table （ROT） in a hot strip mill. A variational method is utilized for the discretization of the governing transient conduction-convection equation, with heat transfer coefficients adaptively determined by the actual mill data. To consider the thermal effect of phase transformation during cooling, a constitutive equation for describing austenite decomposition kinetics of steel in air and water cooling zones is coupled with the heat transfer model. As the basic required inputs in the numerical simulations, thermal material properties are experimentally measured for three carbon steels and the least squares method is used to statistically derive regression models for the properties, including specific heat and thermal conductivity. The numerical simulation and experimental results show that the setup accuracy of the temperature prediction system of ROT is effectively improved.  相似文献   

强化能力培养优化教学内容探索教改途径--热学课程教学改革综述     

宋国利 《哈尔滨学院学报》2001,22(5):108-110

本文作者在热学教学工作中,在强化能力培养,优化教学内容、改革教学方法等方面,进行了某些实践的探索及尝试。  相似文献