检索结果-南通市图书馆

Spin-Dependent Term of Thermodynamic Quantity Around a Black Hole

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2008年第1期49卷 126-128页

作者： li gu-qiang Department of Physics Zhanjiang Normal College Zhanjiang 524048 China

The entropy density, energy density, pressure, and equation of state of an ideal relativistic gas around the Schwarzschild-anti-de Sitter black hole with a global monopole are investigated by using the brick-wall method. It is shown that the sub-leading term with spin-dependence exists and that the corrected expression for any spin field is very different from that for scalar field. The usual result that these thermodynamical quantities take the same forms as those in fiat spacetime holds only for the leading term.

关键词： thermodynamical quantity brick-wall method Boulware vacuum state Schwarzschild-anti-deSitter black hole with a global monopole

Anti-deSitter时空内柱黑洞的量子熵

在线全文

学校读者我要写书评

暂无评论

物理学报 2006年第2期55卷 995-998页

作者：李固强湛江师范学院信息科技学院广东湛江524048

利用brick-wall方法计算了Anti-de Sitter时空内起源于Dirac场的柱黑洞的量子熵.结果表明,忽略远离围绕系统的真空的贡献时,量子熵包含了线性发散项和对数发散项,整个表达式的形式与标量场的不一样.无论整个对数项还是与自旋联系的子对... 详细信息

利用brick-wall方法计算了Anti-de Sitter时空内起源于Dirac场的柱黑洞的量子熵.结果表明,忽略远离围绕系统的真空的贡献时,量子熵包含了线性发散项和对数发散项,整个表达式的形式与标量场的不一样.无论整个对数项还是与自旋联系的子对数项都总是正的.

关键词： brick-wall方法量子熵柱黑洞 Dimc场

Kerr-Newman-de Sitter黑洞的统计熵

在线全文

学校读者我要写书评

暂无评论

物理学报 2005年第7期54卷 3005-3008页

作者：李固强湛江师范学院信息科技学院广东湛江524048

避开求解波动方程的困难,利用量子统计的方法,直接计算Kerr Newman deSitter黑洞背景下玻色场和费米场的配分函数.然后利用砖墙膜模型计算和讨论黑洞背景下的玻色场和费米场的熵.

关键词：黑洞统计熵波动方程量子统计直接计算模型计算配分函数费米场玻色场

Arsenic Trioxide Induces Apoptosis of Glucocorticoid-Resistant Acute Lymphoblastic Leukemia CEM-C1 Cells

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2009年第3期21卷 217-223页

作者： Jiao Ge Xia guo Zhi-gui Ma ling gu qiang li Department of Pediatric Hematology and Immunology West China Second Hospital Sichuan University Chengdu 610041 China

Objective： To explore the effects of arsenic trioxide （ATO） on the apoptosis of glucocorticoid （GC）-resistant T-acute lymphoblastic leukemia （ALL） CEM-C1 cells and its possible mechanisms. Methods： Different concentrations of ATO （0.25 μmol/L-5 μmol/L） were used to induce the apoptosis of CEM-C1 cells. The inhibition rate of cell proliferation and apoptosis were detected by MTT test, Annexin V-FITC/PI flow cytometry and optical microscopy, respectively. RT-PCR was applied to semi-quantitatively analyze the mRNA expression of pro-apoptotic proteins （Bad and PDCD4） and anti-apoptotic proteins （XIAP and MCL-1） induced by different concentrations of ATO at different time points. Results： ATO could inhibit proliferation and induce apoptosis of CEM-C1 cells at a concentration and time dependent manner. Low-dose ATO mildly inhibited the proliferation of CEM-C1 cells while higher concentrations （1 μmol/L and 5 μmol/L） had strong anti-tumor effect with the inhibiting rates of 40.07±7.98% and 88.67±2.88%, respectively. Annexin V-FITC/PI flow cytometry showed that the apoptotic rates of CEM-C1 ceils were significantly increased after 48 hours treatment of different concentrations of ATO. RT-PCR demonstrated up-regulated mRNA expression of pro-apoptotic protein Bad and PDCD4 but down-regulated mRNA expression of anti-apoptotic protein XIAP when CEM-C1 cells were treated with different concentrations of ATO at different time points. The MCL-1 mRNA expression was down-regulated only after the treatment of 5 μmol/L ATO. Conclusion： ATO can inhibit cell proliferation and induce cell apoptosis in GC-resistant CEM-C1 cells. The molecular mechanisms might involve the increased mRNA expression of pro-apoptotic protein Bad and PDCD-4, and rapid down-regulation of XIAP mRNA expression.

关键词： Acute lymphoblastic leukemia CEM-C1 cells Apoptosis arsenic trioxide (ATO)

Simultaneously quantification of ginsenoside Rb1,Rb2,Rc,Rd,Re,Rf,Rg1 in dog plasma by liquid chromatography-tandem mass spectrometry and its application in six-month toxicokinetic study of Shenmai injection

在线全文

学校读者我要写书评

暂无评论

中国药理学与毒理学杂志 2013年第3期 560-561页

作者： YU Jian gu li-qiang XIN Yan-fei GAO Hai-yan XU Pan-sheng MA Zhu-feng YOU Zhen-qiang ZHANG Sheng WANG Zhi XUAN Yao-xian Center of Safety Evaluation Zhejiang Academy of Medical Sciences Chiatai QingChunbao Pharmaceutical Co. Ltd.

OBJECTIVE Shenmai injection(SMI) is a kind of herbal injection widely used in China derived from SHENMAI *** is the alcohol extraction part of Panax ginseng and Ophiopogon ***’s generally accepted that ginsenosides are the major components in SMI according to their abundance and *** In order to monitor the kinetic profile of major components in SMI during long-term treatment and to further analyze its connection to toxic effect,a 6-month toxicokinetic experiment was performed in 24 beagle *** were equally and randomly divided into four groups: control group(0.9% NaCl solution per day;n = 6),low-dosage Group(2 g·kg-1 per day;n = 6),medium-dosage Group(6 g·kg-1 per day;n = 6) and High-dosage Group(20 g·kg-1 per day;n = 6).Vehicle and SMI were *** injected everyday for 180 continuous days(6 months).Blood sample were collected at 0,90,180 d after the beginning of the administration of *** concentration of ginsenoside Rb1,Rb2,Rc,Rd,Re,Rf and Rg1 in plasma were determined simultaneously for the first time by liquid chromatography-tandem mass spectrometry(LC-MS /MS) and liquid-liquid extraction ***-compartmental parameters were further simultaneously calculated and ***,the level of bodyweight,AST,ALT and CK were also monitored to evaluate the toxic effect caused by *** According to the results,significant differences existed between 20(S)-protopanaxadiol type(PPD type) and 20(S)-protopanaxatriol type(PPT type) *** accumulation of ginsenoside PPD type ginsenosides can be observed with the proceeding of the *** long-term administration of 6 g /mL and 20 ***-1 SMI caused a slowing down in the growth of bodyweights,no toxic effect could be reviewed from the level of ALT,AST and *** Although no significant toxic effect could be observed during the toxicokinetic study,the kinetic profile of PPD type ginsenoside was severely *** SMI is wild used in the co-

关键词： Shenmai injection toxicokinetics ESI-LC-MS /MS ginsenosides

自旋场对Barriola-vilenkin黑洞熵的量子修正

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

物理学报 2003年第6期52卷 1346-1349页

作者：李固强湛江师范学院信息科技学院湛江524048

用砖墙模型的方法 ,讨论了无源引力场对Barriola Vilenkin黑洞熵的量子修正 .计算表明 ,量子修正应该包含两部分 :其中一部分与视界面积成正比 ,在视界附近与紫外截断因子是平方反比发散的 ;另一部分是两个对数发散项 ,这部分除了与... 详细信息

用砖墙模型的方法 ,讨论了无源引力场对Barriola Vilenkin黑洞熵的量子修正 .计算表明 ,量子修正应该包含两部分 :其中一部分与视界面积成正比 ,在视界附近与紫外截断因子是平方反比发散的 ;另一部分是两个对数发散项 ,这部分除了与黑洞的本身特征性质 (M ,η)有关以外 ,还与自旋场的自旋有关 .

关键词：自旋场 Barriola-vilenkin黑洞熵量子修正视界面积砖墙模型

在线全文

学校读者我要写书评

暂无评论

壳寡糖对番茄种子萌发的影响

西南农业学报 2014年第3期27卷 1233-1236页

作者：顾丽嫱唐山师范学院生命科学系河北唐山063000

用不同浓度的壳寡糖溶液(50、150、250、350 mg/L,以蒸馏水作对照)对番茄种子浸种处理,探索壳寡糖对番茄种子萌发的影响。结果表明:番茄种子的发芽率、发芽势、根鲜重、胚芽鲜重均高于对照组,其中在150 mg/L的壳寡糖作用下,番茄种子的... 详细信息

用不同浓度的壳寡糖溶液(50、150、250、350 mg/L,以蒸馏水作对照)对番茄种子浸种处理,探索壳寡糖对番茄种子萌发的影响。结果表明:番茄种子的发芽率、发芽势、根鲜重、胚芽鲜重均高于对照组,其中在150 mg/L的壳寡糖作用下,番茄种子的发芽率、发芽指数、根鲜重、胚芽鲜重、活力指数,分别增加16.67%、19.87%、41.67%、23.66%、48.57%,250 mg/L的壳寡糖作用下,番茄种子的根长增长26.02%,350 mg/L的壳寡糖作用下,番茄种子的发芽势、胚芽长分别增长36.67%、26.17%。壳寡糖对番茄种子萌发的最适浓度为150 mg/L。

关键词：壳寡糖番茄发芽率发芽指数活力指数

壳聚糖对铬胁迫下番茄幼苗的生理生化指标影响

在线全文

学校读者我要写书评

暂无评论

西南农业学报 2011年第2期24卷 519-522页

作者：顾丽嫱唐山师范学院生命科学系河北唐山063000

通过水培研究壳聚糖对铬胁迫下番茄幼苗生理生化指标的影响。结果表明:壳聚糖增加了铬胁迫下番茄幼苗叶绿素、可溶性蛋白、可溶性糖和游离脯氨酸含量,提高了POD活性,降低了MDA含量,从而降低铬对细胞的伤害,提高番茄幼苗对重金属铬的抗性。

关键词：壳聚糖铬胁迫番茄幼苗生理生化指标

维普期刊数据库博看期刊

外源CTS对干旱胁迫下蝴蝶兰幼苗生理生化指标的影响

在线全文

学校读者我要写书评

暂无评论

西南农业学报 2011年第1期24卷 90-93页

作者：顾丽嫱唐山师范学院生命科学系河北唐山063000

为研究壳聚糖(Chitosan,CTS)对蝴蝶兰幼苗抗旱性的影响,以蝴蝶兰幼苗为试材,叶面喷施150 mg/LCTS后,在自然干旱胁迫下,测定相对电导率,过氧化物酶(POD)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)的活性,丙二醛(MDA)、脯氨酸、可溶性糖的... 详细信息

为研究壳聚糖(Chitosan,CTS)对蝴蝶兰幼苗抗旱性的影响,以蝴蝶兰幼苗为试材,叶面喷施150 mg/LCTS后,在自然干旱胁迫下,测定相对电导率,过氧化物酶(POD)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)的活性,丙二醛(MDA)、脯氨酸、可溶性糖的含量。结果表明:与干旱胁迫相比,CTS处理后的蝴蝶兰幼苗相对电导率增加了44.93%,MDA含量降低了19.86%,POD、CAT和SOD活性分别提高了49.46%、51.49%和12.06%,游离脯氨酸和可溶性糖含量分别增加了134.10%和17.47%。总之CTS可以通过提高蝴蝶兰幼苗保护酶活性和增加渗透调节物质含量来减少干旱胁迫的影响。

关键词：壳聚糖抗旱性蝴蝶兰幼苗

维普期刊数据库博看期刊