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971.
研究生心理压力应对策略 总被引:1,自引:0,他引:1
本文分析了研究生心理压力的现状,提出从自我调整和学校社会外部支持两方面进行应对研究生心理压力的策略,从而为提高研究生的心理健康水平起到一定积极作用。 相似文献
972.
在一般的条件下 ,得到一类具有反射边界的随机微分方程解的存在性和唯一性结果 ,该类方程的反射边界是随机的而且是随时间而变化的 ,并讨论了该解的连续性估计问题 . 相似文献
973.
文章根据钢和泰生前有关来往信件,就其所谓"一稿两用"事件作一简述,藉此我们可以从钢和泰对事件处理的全过程中学习某些有益的东西。 相似文献
974.
研究了锦屏一级电站在施工期,竣工蓄水后,水库水位消涨期对鸟兽的影响及应采取的对策。 相似文献
975.
976.
The characterization of the algaeAnabaena cylindrica solution with Fe (III) was investigated using fluorescence emission and synchronous-scan spectroscopy. The ranges of concentrations
of algae and Fe (III) in aqueous solutions were 5.0×108 2.5×108 cell/L and 1060 μmol/L. respectively. The effective characterization method used was synchronous-scan fluorescence spectroscopy
(SFS). The wavelength difference (Δλ) of 90 nm, was maintained between excitation wavelength (λen) and emission wavelength
(λen). The peak was observed at about (λex) (λem) 326 nm for synchronous scan fluorescence spectroscopy. The fluorescence
quenching in system of algae Fe(III)-HA was studied using synchronous-scan spectroscopy for the first time, Fe(III) was clearly
the effective quencher. The relationship betweenI I (quenching efficiency) andc (concentration of Fe (III) added) was, a linear correlation for the algae solution with Fe(III). Also, Aldrich humie acid
(HA) was found to be an effective quencher.
Foundation item: Supported by the National Natural Science Foundation of China (20177017) and the Scientific Research Foundation of Wuhan
Environmental Protection Bureau
Biography: LIU Xian li(1965), male. Ph.D. Associate professor, research direction: environmental chemistry. 相似文献
977.
Chao Gu YongRui Du Yan Gao Zhi Yao Xin Gu QiuYue Zhang JingJing Xu WeiMin Deng 《科学通报(英文版)》2012,57(11):1288-1297
There is accumulating evidence that cancer stem cells (CSCs) play an important role in tumor progression. Novel strategies targeting CSCs have been widely researched. In the present study, we explored whether such CSCs existed in human ovarian cancer (OVCA) cell line and whether anti-CD44 antibody had effects on such subpopulation. We isolated and identified spheroid cells from SKOV-3. Then we used A3D8, an anti-CD44 mAb to treat spheroid cells with so-called "stemness". Effects of A3D8 on spheroid cells’ biological behaviors were examined. Our findings showed that there was a small subpopulation that had so-called "stemness" in SKOV-3 cell line. Against spheroid cells, A3D8 can (1) inhibit cell proliferation; (2) change cell cycle distribution and expression of p21, CDK2 and cyclinA; (3) enhance cisplatin (DDP)-induced apoptosis; (4) promote cell differentiation; (5) inhibit clone formation efficiency; (6) reduce invasive efficacy; (7) inhibit tumorigenicity. Thus, to sum up points which we have just showed, spheroid cells isolated from SKOV-3 can be used as an appropriate in vitro model for relevant study of human ovarian CSCs. And our results reasoned that anti-CD44 therapy may become a potential promising strategy for OVCA treatment. 相似文献
978.
Deng Weineng 《科学之友》2012,(14)
笔者结合自己多年的工作经验,阐述了建筑工程测量技术的相关问题及其应用. 相似文献
979.
980.
XuePing Ji Nina G. Jablonski Denise F. Su ChengLong Deng Lawrence J. Flynn YouShan You Jay Kelley 《科学通报(英文版)》2013,58(31):3771-3779
Fossil apes are known from several late Miocene localities in Yunnan Province, southwestern China, principally from Shihuiba (Lufeng) and the Yuanmou Basin, and represent three species of Lufengpithecus. They mostly comprise large samples of isolated teeth, but there are also several partial or complete adult crania from Shihuiba and a single juvenile cranium from Yuanmou. Here we describe a new, relatively complete and largely undistorted juvenile cranium from the terminal Miocene locality of Shuitangba, also in Yunnan. It is only the second ape juvenile cranium recovered from the Miocene of Eurasia and it is provisionally assigned to the species present at Shihuiba, Lufengpithecus lufengensis. Lufengpithecus has most often been linked to the extant orangutan, Pongo pygmaeus, but recent studies of the crania from Shihuiba and Yuanmou have demonstrated that this is unlikely. The new cranium reinforces the view that Lufengpithecus represents a distinct, late surviving lineage of large apes in the late Miocene of East Asia that does not appear to be closely affiliated with any extant ape lineage. It substantially increases knowledge of cranial morphology in Lufengpithecus and demonstrates that species of this genus represent a morphologically diverse radiation of apes, which is consistent with the dynamic tectonic and biotic milieu of southwestern China in the late Miocene. 相似文献