研究生职业生涯规划与胜任力关系研究——职业倾向的中介效应分析

随着研究生就业形势的日益严峻,研究生职业生涯规划问题受到广泛关注。实证研究结果表明,研究生职业生涯规划对其职业倾向和胜任力有着显著的正向影响,其中,职业倾向是实现研究生胜任力提升的"促进剂"。为此,应激发研究生职业生涯规划的主体性,正确对待职业理想与就业现实的矛盾,以职业倾向训练为导向促进研究生对自我的认识。     

Importance of a novel GABAA receptor subunit for benzodiazepine pharmacology

Neurotransmission effected by GABA (gamma-aminobutyric acid) is predominantly mediated by a gated chloride channel intrinsic to the GABAA receptor. This heterooligomeric receptor exists in most inhibitory synapses in the vertebrate central nervous system (CNS) and can be regulated by clinically important compounds such as benzodiazepines and barbiturates. The primary structures of GABAA receptor alpha- and beta-subunits have been deduced from cloned complementary DNAs. Co-expression of these subunits in heterologous systems generates receptors which display much of the pharmacology of their neural counterparts, including potentiation by barbiturates. Conspicuously, however, they lack binding sites for, and consistent electrophysiological responses to, benzodiazepines. We now report the isolation of a cloned cDNA encoding a new GABAA receptor subunit, termed gamma 2, which shares approximately 40% sequence identity with alpha- and beta-subunits and whose messenger RNA is prominently localized in neuronal subpopulations throughout the CNS. Importantly, coexpression of the gamma 2 subunit with alpha 1 and beta 1 subunits produces GABAA receptors displaying high-affinity binding for central benzodiazepine receptor ligands.     

非谐振子的能量与固体热弹性效应

讨论了缓慢变化外力作用下非简谐振子的能量随外力的变化规律，在此基础上研究了固体的热弹性效应．结果表明：当物体受张力时，非谐振子的能量会降低，释放能量，使固体温度降低；受较小的压力时，它的能量会增大，吸收能量，固体的温度升高     

睡莲净水效果与生理特性的日变化关系

采取现场试验方法,研究了晴天时睡莲对黑臭河水的净化效果与其生理特性的日变化关系.结果表明:随着光强日变化,睡莲叶片的叶绿素、可溶性蛋白含量日变化呈双峰型,峰值约在12:00和14:00,睡莲根组织的过氧化物酶(POD)、过氧化氢酶(CAT)活性日变化呈单峰型,峰值约在13:00;植物净化槽中CODCr,NH+4 -N,...     

谈职业学校良好师生关系的构建

笔者在教育教学过程中发现师生关系的性质和水平对教育教学活动的效果具有重要作用,本文分别从以下七个方面论述了构建良好师生关系的重要性,从而提高了教学效果,激发了学生学习的积极性。     

血栓形成过程与其密度的相关性研究

目的探讨血液凝固过程结构状态改变及其密度变化的相关性。方法采用物理学方法,对新血样标本,取其自然凝结的血栓,对凝血块密度参量变化进行研究。结果在血栓形成过程中,血栓密度伴随血凝块形成时间延长而明显增加,使其密度随血栓凝龄的延长成正相关,反映了血液凝固状态的变化伴有物理参量的明显改变。结论研究表明血栓密度具有随凝龄改变的特征,这对于研究血液凝固结构状态变化,提高血栓超声消溶效果及其临床应用具有参考价值。     

Correlation between fragmented immunoglobulin genes and heavy chain deletion mutants.

It is generally accepted that the variable (V) and constant (C) regions of immunoglobulin (Ig) chains are under separate genetic control. The notion that the different domains and interdomain regions are also under the control of independent genetic units was initially based on the clearcut results obtained by studying the primary structure of deletion mutants and received definitive support from direct analysis of cloned heavy (H) and light (L) chain genes. Here we present additional studies carried out on two selected gamma 3 deletion mutants which indicate the genetic control of human H chains may be even more complex than previously believed.     

太阳黑子数与电离层TEC的相关性分析

为了研究电离层TEC与太阳黑子数在短周期上的相关关系,采用1997～2004年的太阳黑子数资料与同期厦门站的电离层TEC数据,利用小波功率谱分析的方法提取3个尺度的短周期,并利用小波相干谱的方法重点研究了两者在278 d周期上的相关性。研究表明：太阳黑子数和电离层TEC主要存在准27 d、准半年周期以及年周期等短周期,而且电离层TEC和太阳黑子在准27 d周期上有良好的相关性。位相计算表明,电离层TEC的变化滞后于太阳黑子数2～3 d。厦门地区TEC与太阳活动的相关性在夏季比其他季节更强,这对提高该地区电离层TEC预报精度有很大意义。