1) tortoise coordinate
乌龟坐标
1.
In Vaidya-Bonner spacetime,the quantum nonthermal radiation of black hole was researched through studying Hamilton-Jacobi equation by using Lagging Eddington-Finketstein coordinate and tortoise coordinate transformation.
在Vaidya Bonner时空中,用滞后的Eddington Finketstein坐标形式,通过研究哈密顿———雅可比方程,采用乌龟坐标变换,研究此黑洞的量子非热辐射。
2.
In Vaidya spacetime, the quantum nonthermal radiation of black hole was studied through studying HamiltonJacobi equation by using Lagging Eddington coordinate and tortoise coordinate transformation, which shows the study of the Lagging Eddington coordinate and that of the leading Eddington coordinate have the same result.
在Vaidya时空中,用滞后爱丁顿坐标形式,采用乌龟坐标变换,通过讨论哈密顿—亚可比方程,研究此黑洞非热辐射特征。
3.
The variations in Hamilton-Jacobi equation in curved spacetime are separated by means of tortoise coordinate transform.
适当地采用乌龟坐标变换，便可对弯曲时空中的Ｈａｍｉｌｔｏｎ－Ｊａｃｏｂｉ方程进行变量分离。
2) tortoise coordinate transformation
乌龟坐标变换
1.
We put Dirac equation of near the event horizons of black hole change into second order equation of by employing the new tortoise coordinate transformation;get the Hawking radiation temperature near event horizons and Hawking radiation spectrum.
对于一般球对称动态黑洞,将四个相互耦合的Dirac方程化简为二阶方程,分离变量进行了退耦,利用乌龟坐标变换,在视界面附近得到辐射温度函数,导出了热辐射谱。
2.
The temperatures of Schwarzchild and Kerr-Newman black holes computed by this method are identical with the result computed by the definition of black hole s surface gravity,while the temperature of Vaidya black hole accords with the outcome calculated by reducing the Klein-Gordon equation near the event horizon to standard form with a new tortoise coordinate transformation.
由此方法算出的史瓦西黑洞和克尔-纽曼黑洞的温度与以前的结果相符,Vaidya黑洞的温度与引入新的乌龟坐标变换后算得的结果一致。
4) general tortoise coordinate transformation
广义乌龟坐标变换
1.
Motivated by the work of Robinson et al,we have researched Hawking radiation from the event horizon of Vaidya black hole via covariant anomalies theory and general tortoise coordinate transformation,and the result shows that the Hawking temperature can be correctly determined by covariant anomalies at the horizon.
受Robinson等人的工作的启发,我们推广协变反常理论和广义乌龟坐标变换研究了Vaidya黑洞事件视界处的Hawking辐射,结果表明用协变反常理论计算,可以得到正确的Hawking辐射流和黑洞温度。
5) Chinemys reevesii
乌龟
1.
Evaluation of Nutritional Components of Chinemys reevesii Muscle in Ponds;
乌龟肌肉营养价值的评定
2.
The nutrition value and nutrition requirement of Chinemys reevesii;
乌龟的营养价值及营养需要
3.
Preliminary Study on Partial Sequences of Mitochondrial DNA Cytochrome B Gene of Chinemys reevesii;
乌龟线粒体细胞色素b基因片段的初步研究
6) tortoise
[英]['tɔ:təs] [美]['tɔrtəs]
乌龟
1.
Reseach of main components measurement and anti-bacterium function from tortoise urine;
乌龟尿液主要成分测定及其抑菌效果研究
2.
Biological Characters and Biochemical Analysis of Urine-associated Liquid from Hibernating Tortoise(Chinemys reevesii);
冬眠状态乌龟尿液的生物学特性及生化分析
补充资料：金钱吊乌龟碱
分子式：
CAS号：
性质：又称金钱吊乌龟碱，西法安生，千金藤素，豆花藤碱。黄色粉末，熔点145～155℃，旋光度+277°(c=2，氯仿)。除石油醚外，溶于其他常用有机溶剂。天然存在于防己科植物头花千金藤(Stephania cepharantha Hayata)的根、块茎等植物中。本品具有抗癌、抗菌、消炎、降血压、肌肉松弛、调节免疫、抑制过敏性休克等多体药理作用。临床上用于抗癌药物或放射治疗引起的白细胞减少症，X线工作者服用本品有提高白细胞的效果。
CAS号：
性质：又称金钱吊乌龟碱，西法安生，千金藤素，豆花藤碱。黄色粉末，熔点145～155℃，旋光度+277°(c=2，氯仿)。除石油醚外，溶于其他常用有机溶剂。天然存在于防己科植物头花千金藤(Stephania cepharantha Hayata)的根、块茎等植物中。本品具有抗癌、抗菌、消炎、降血压、肌肉松弛、调节免疫、抑制过敏性休克等多体药理作用。临床上用于抗癌药物或放射治疗引起的白细胞减少症，X线工作者服用本品有提高白细胞的效果。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条