Results 1 to 10 of about 5,058 (138)

东北林蛙和黑龙江林蛙越冬前期体温调节差异

open access: yes野生动物学报, 2022
为了解环境温度对东北林蛙(Rana dybowskii)和黑龙江林蛙(R.amurensis)体温调节能力的影响,研究了2种林蛙在不同时间(07:00、10:00、13:00、16:00、19:00)、室温及梯度变温(10、12、14、16、18、20 ℃)等条件时的体温变化规律。结果表明:2种林蛙体温调节均无显著的性别差异,林蛙体温与环境温度的变化趋势一致。环境温度最高时,2种林蛙的体温也达到最高,体温与环境温度显著正相关;体温的变化幅度 ...
李殿伟刘佳慧彭婷单洪佳张博妍孟繁星姚旭
doaj   +1 more source

黑天鹅雏鸟生长发育研究

open access: yes野生动物学报, 2013
2011年1~5月,对徐州睢宁养殖场的10只黑天鹅雏鸟的体重、体长、尾长、嘴峰、嘴裂及跗跖等外部特征和体温进行测定,运用Logistic生长曲线进行回归分析。其生长曲线均呈"S"型,显示出雏鸟外部体征发育呈现一定的顺序,符合重要功能优先发育的原则。(1)1~5日龄,雏鸟的体重呈下降趋势;雏鸟的嘴峰、跗跖基本不生长;体温升高迅速但体温调节能力还未健全。(2)6~30日龄,雏鸟体重开始增长;嘴峰生长迅速;体温逐渐上升,体温调节能力迅速增强。(3)31~90日龄,体重迅速增长;跗跖生长迅速,体温逐渐达到恒定。(
孙伟东   +4 more
doaj   +2 more sources

广东罗坑自然保护区鳄蜥生理体温调节能力研究

open access: yes野生动物学报, 2022
为进一步探讨鳄蜥(Shinisaurus crocodilurus)的生理性体温调节能力,2018年8月,以广东省罗坑自然保护区鳄蜥研究中心成体饲养池内的鳄蜥为研究对象,探讨鳄蜥在20.0~30.0 ℃时,调节体温(Tb)与环境温度(Te)的关系。结果表明:以2.5 ℃梯度变温时,鳄蜥的调节体温与环境温度呈正相关,升温时,Tb=0.533Te+13.084(F1,48=327.65,R2=0.872 ...
何南 1 张小丽 2   +4 more
doaj   +1 more source

动物的体温调节

open access: yes野生动物学报, 1993
在丰富多彩的动物世界里,有许多善于调节体温的“行家里手”,它们凭借各具特色的自产“空调系统”,维系着内外环境的相对稳定,推动着动物世界的进化发展。“沙漠之舟”—骆驼,周身覆盖着褐色长绒毛(约10厘米)和短毛,有防寒隔热之用。当五月换绒时,其老绒不立即脱掉,而在绒被与皮肤间形成通气降温的间隙,直到九月新绒长成后才陆续退掉 ...
李克智
doaj   +2 more sources

Research Progress on the Effect of Synthetic Cathinones on Animal Behavior [PDF]

open access: yes, 2021
Synthetic cathinones are a class of new psychoactive substances with a structure similar to amphetamine drugs, which can produce excitatory effects similar to drugs such as amphetamine and cocaine after being taken.
HUANG Zhi-bin, CAI Juan, LIN Ze-bin, et al.
core   +1 more source

Awake anesthesia for resection of gliomas located in eloquent brain [PDF]

open access: yes, 2012
Intraoperative awake anesthesia is a safe and reliable method performed in glioma surgery in brain eloquent areas, for the purpose of a maximum resection of the lesions and protection of brain function.
De⁃xiang WANG, Kun PENG, Ru⁃quan HAN
core   +2 more sources

Effects of bisphenol A exposure at different circadian time on hepatic lipid metabolism in mice [PDF]

open access: yes, 2022
BackgroundLipid metabolism in liver shows circadian-dependent profiles. The hepatotoxicity of environmental chemicals is dependent on circadian time.
Bo ZHANG   +12 more
core   +2 more sources

Rectal Temperature of Corpse and Estimation of Postmortem Interval [PDF]

open access: yes, 2019
Measurement of corpse temperature is mainly used for estimation of early postmortem interval, and rectal temperature is often used as a representative of body’s core temperature in actual work because it is simple, quick and non-invasive. At present, the
YANG An-shun, QUAN Guo-lin, GAO Yun-gui,et al.
core   +1 more source

Research Status of New Designer Drug Methcathinone in Forensic Toxicology [PDF]

open access: yes, 2018
Methcathinone, a new cathinone designer drug, which is structurally similar to amphetamine analogs, is a central nervous stimulant. Recently, there has been a worldwide rise in its popularity and abuse, and a growing number of cases with disability or ...
DENG Yan-fei, LIU Liang, YANG Zhi-xi,et al.
core   +1 more source

天然气压力能发电-制冰利用及运行效益评估研究 [PDF]

open access: yes全球能源互联网, 2023
天然气压力能是一种新兴清洁能源,对其进行高效利用是节约能源、降低碳排放的有效手段。目前,天然气压力能回收利用中存在用能模式单一、评估指标片面以及评估方法缺乏等问题,导致天然气压力能利用率低,运行效益和系统不足无法被准确评估,行业发展受阻。首先,提出了天然气压力能综合利用方案,使用透平膨胀机回收压力能发电,降压过程中产生的冷能用于制冰,并加入太阳能热水系统提高出站气温度,提高能源利用效率。其次,基于分析模型并考虑经济性和环保性构建了压力能利用系统运行效益评估指标体系,对系统的运行状态进行全面、综合的评估 ...
李茜   +5 more
doaj   +1 more source

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