Current Development of the Chinese Special Libraries

1General introduction　　 The special libraries in the Chinese mainland have experienced 3development periods. 1From thebeginning of5 0 s to the end of70 s,all the special libraries focused on the collection development,in thatperiod relatively backward and limited library service were provided. 2 After the end of 70 s,computertechnology was introduced to the field which caused a large amount of bibliographic and secondary publicationdatabases'construction.That is to say,on the basis of the p…     

奇文异采——从《沁园春·长沙》赏析毛泽东诗词的豪放美

从想象的奇异之美，笔触的飞动之美，思想的超脱之美，让我们去领略毛泽东那独步古今的豪迈胸襟和政治家兼诗人的奇异采。     

高职经济数学“案例与实验”教学浅试

高职教育要培养学生有较强的职业综合能力和解决实际问题的能力,而传统的教学内容和方法存在一个最主要的问题就是理论与实际联系不够紧密,对于高职数学教学来说,更是如此。为改变这种状况,采用"案例与实验"相结合的方法,通过利用计算机软件,使学生探索解决一些典型数学问题的方法,可培养学生的数学应用能力和创新思维能力。     

Danshen protects endothelial progenitor cells from oxidized low-density lipoprotein induced impairment

In this study,we examined the protective effects of Danshen both on endothelial progenitor cells(EPCs) in patients with hypercholesterolemia and on in-vitro EPCs of healthy volunteers.In the clinical study,we randomly divided 24 subjects with hypercholesterolemia into two groups(the control group and the Danshen-treated group).At the end of two weeks of treatment,the EPC cellular functions of both groups were tested.The results indicated that,compared to the control group,EPCs in the Danshen-treated group showed significantly better cellular functions,which was manifested in the cloning number,the proliferation capacity,the number of EPC adhesions,and cell migration.In the subsequent in-vitro experiments,EPCs were treated with vehicle,oxidized low-density lipoprotein(Ox-LDL,100 μg/ml),or Ox-LDL(100 μg/ml) plus different concentrations of Danshen(Danshensu 2,10,or 50 μg/ml,respectively) for 24 h.The results showed that Danshen treatments can prevent the detrimental effects of Ox-LDL on EPC cellular functions measured by proliferation capacity(0.24±0.08,0.37±0.11,0.30±0.04 vs.0.13±0.02,P0.05,P0.01,and P0.01,respectively),and adhesion ability(63.00±11.60,70.00±10.80,85.50±11.41 vs.40.50±6.85,all P0.01).Compared to the group treated with Ox-LDL alone,Danshen treatment significantly decreased the lipid peroxidation end product malondialdehyde(MDA) [(4.34±0.54),(3.98±0.47),(3.46±0.31) vs.(5.57±0.64) nmol/ml,all P0.01],increased the production of superoxide dismutase(SOD) [(29.74±0.71),(31.09±0.83),(30.41±0.65) vs.(14.76±3.99) U/ml,all P0.01],and lowered the expression of interleukin-6(IL-6) [(24.62±7.69),(27.04±3.14),(33.38±18.86) vs.(230.67±33.53) pg/ml,all P0.01] and tumor necrosis factor-α(TNF-α) [(41.72±6.10),(17.02±6.82),(3.73±2.26) vs.(228.71±41.53) pg/ml,all P0.01] in Ox-LDL treated EPCs.These results suggest that Danshen may exert a protective effect through its antioxidant and anti-inflammatory features.     

2006年与生物学科有关的十大国际、国内科技新闻

1与生物学科有关的国际新闻 1．1首次成功逆转细胞分裂过程，有望获得治愈癌症的新方法 2006年美国俄克拉荷马州医学研究基金会的科学家首次成功地将细胞分裂的过程加以逆转，这一突破性成果有可能最终使人类获得治愈癌症及其他多种疾病的有效办法。[第一段]     

The relationship between group adoption of Knowledge Building Principles and performance in creating artifacts

Educational technology research and development - Knowledge Building is a socio-constructivist approach that aims to engage students in a knowledge-creation environment as early as possible to get...     

论商品交换中的权利与义务

财产所有权规定了所有者的合法权利,它要求交换双方互相承认并尊重这种权利。维护自己的利益使之不因交换而受到侵害是自己的权利,尊重他人的利益使之不因交换而减少则是自己的义务。交换中的权利与义务均来自财产所有权。契约是关于交换的微观制度,不仅规定了双方的权利与义务,而且还使得这些权利与义务合法化。为了避免交易的不公平,交换双方应该平等、自由、自主地协商,自愿地交换,以达到公平互利,实现权利与义务的统一。     

Fostering Students’ Scientific Inquiry through Computer-Supported Collaborative Knowledge Building

Research in Science Education - The aim of this study was to investigate whether and how engaging with a computer-supported collaborative knowledge-building environment helps students to develop a...     

数学专业多模式分层次教学实证研究

四所不同层次院校共同研究的结果 ,成果具有代表性 ;改变靠拍脑袋定性思考的研究方法 ,采用定量实证分析 ,增加了成果的科学性。扩招使生源质量下降 ,学生差异增大 ,但对基本教学质量没有根本性的影响 ;建立优秀生培养机制 ,是“大众教育”阶段“分层次数学”成功的关键 ,是数学研究人才能够不断涌现的保证     

浅析洗钱罪

洗钱罪是一个新罪名 ,本文对洗钱罪的概念、构成要件、特征、方式、刑事责任进行了全面地论述 ,并结合我国当前的具体情况 ,找出预防及打击洗钱犯罪的一些对策。