黄斑姜中期染色体CPD染色和45S rDNA荧光原位杂交分析

为了对黄斑姜(Zingiber flavo-maculatum S.Q.Tong.)的染色体进行识别并对该物种基因组的结构进行初步研究,利用PI和DAPI组合(CPD)染色和45S rDNA探针荧光原位杂交对中期染色体进行了分析.结果显示,黄斑姜具有2对45S rDNA位点,分别位于第3、4号染色体的短臂,对应于相应染...     

不同植物生长调节剂对益母草愈伤组织诱导的影响

以益母草茎段、叶片两种外植体诱导产生愈伤组织．在MS培养基上,试验不同种类、不同浓度的植物生长调节剂及其组合对益母草茎段和叶片愈伤组织诱导的影响．结果表明：茎段愈伤组织诱导的较适培养基是MS附加6-BA3mg／L＋NAA1mg／L,诱导率为65％;叶片愈伤组织诱导的较适培养基是MS附加6-BA2mg／L＋NAA1mg／L,诱导率为80％．对益母草茎段和叶片外植体愈伤组织进行诱导,可为进一步研究益母草的组织培养和植株再生提供实验依据．     

Na2S2O3溶液标定实验的误差分析

本文针对Na2S2O3溶液标定实验的误差分析这一难点,通过引导学生归纳总结,得到的结论为所有的误操作都可引起消耗的V(Na2S2O3)变化,进而导致测定结果C(Na2S2O3)的变化,由此,笔者给出了如何避免误操作的建议.     

基于遗传算法的实验室排课系统设计与实现

由于排课问题是一个NP完全优化问题,采用遗传算法来搜索近似最优解。遗传算法是一种借鉴生物界自然选择和进化论发展起来的随机搜索算法,能够非常有效地解决NP完全的组合优化问题,并且解决了遗传算法在排课过程中的冲突问题。系统采用的是B/S网络结构,实践证明,系统运行良好。     

基于18S rDNA序列对单尾虫属（粘体门，双壳目）的系统学研究

采用18S rDNA序列为基础的系统分析方法,对采自嘉陵江磁器口江段的黄颡单尾虫Unicauda pelteobagrus Ma,1998进行了分子系统学研究,首次给出了黄颡单尾虫的SSU rDNA序列信息．同时基于18S rDNA数据、遗传距离和系统树特征讨论了尾单尾虫Unicauda caudatus和黄颡单尾虫的系统关系．结果表明,尾单尾虫与尾碘泡虫的系统关系较近,而与黄颡单尾虫系统关系较远,不支持将尾单尾孢虫和黄颡单尾虫同置于单尾虫属中,并对单尾虫属的有效性提出质疑．     

News or Noise?

This study investigates the quality of the U.S. News annual ranking of national universities and liberal arts colleges. The main finding is that current rankings changes have a strong tendency to revert over the following two rankings. Using a simple model, this study estimates that about 70 to 80 percent of the variation in rankings changes is transitory and reversible. Thus, most of the news in the annual rankings is essentially meaningless noise. An analysis of possible explanations suggests that the noise in annual ranking changes is most likely due to various measurement, estimation, and other information processing errors in the rankings' underlying components.     

The Philosophical Conflict between the School of Baghdad and the School of Khorasan in the Tenth Century: Towards a New Understanding of the Development of Islamic Philosophy

Historians often present the evolution of Islamic philosophy through a limited number of philosophers beginning with al-Kindī and concluding with Ibn Rushd. This practice tacitly asserts that Islamic philosophy developed only in accordance with this “sequential” or “chronological” context that assumes it was the inevitable evolution of Aristotelian thought in Arabic. However, most of those who present Islamic philosophy in this manner appear to have overlooked the fact that it developed in the context of a philosophical conflict that emerged between the two schools to which the majority of Islamic philosophers belonged – the School of Baghdad and the School of Khorasan, which appeared in the tenth century and introduced philosophy to Islam and Muslims. This study stands apart from earlier attempts to present Islamic philosophy by considering these two schools and the frequently violent disputes that occurred between them. It is based on an historical-analytical approach accompanied by a rereading of numerous historical and literary texts and presents a reinterpretation of the works of Ibn Sīnā that differs from past interpretations of the history of Islamic philosophy. The study concludes with a thorough examination of the texts and contexts, which demonstrates the existence of the two philosophical schools and their significant contributions to the development of Islamic philosophy, albeit with their own distinctive elements. The study also argues that the philosophical School of Baghdad migrated to Morocco and Andalusia and arrived, in some respects, in Europe through Ibn Rushd, whereas the School of Khorasan appeared in Suhrawardī’s Philosophy of Illumination and in modern Iranian philosophy.     

Mumford on aesthetic–moral interaction in sport

Stephen Mumford argues that aesthetic and moral values in sport are interdependent, focusing on cases where immorality taints beautiful performance. This interdependence thesis is insightful but, I argue, in need of refinement, as its normative implications are unclear and perhaps implausible (e.g. the Nazi aesthetics problem). I also challenge Mumford’s perspective on the infamous Dynamo Kiev death match. Whereas Mumford claims that the match’s morally oppressive circumstances detract from it so that ‘it was not something knowingly we should have admired aesthetically’, I argue that, on the contrary, and in light of what Mumford says about other cases, such circumstances actually enhance the game’s aesthetics such that it would be wrong not to appreciate it aesthetically.     

Long-term endurance training increases serum cathepsin S and decreases IL-6 and hsCRP levels

Cathepsin S (CS) was shown to play a key role in cancer progression, atherosclerosis, heart valve disease, insulin resistance and diabetes mellitus. The present prospective study aimed to investigate the influence of sports on CS, interleukin-6 (Il-6) and high-sensitivity C-reactive protein (hsCRP) levels.

Ninety-eight of 109 participants completed the study. Ergometries were performed at baseline and after 8 months to evaluate/quantify the performance gain. Blood samples were taken at baseline and every 2 months. CS was measured by ELISA (enzyme-linked immunosorbent assay). Compared to the control group (mean performance gain ?3.41 ± 4.62%) we observed a significant physical-activity-induced increase of CS levels (3.45–3.73 ng · ml^?1; P = 0.027) and a significant decrease of Il-6 (2.43–1.91 pg · ml^?1; P = 0.031) and hsCRP-levels (0.11–0.09 mg · dl^?1; P = 0.001) in the intervention group (mean performance gain: 12.13 ± 6.32%). Furthermore, the tendency of the progression was significant for CS and Il-6 (P = 0.002/0.033).

We could show a significant sports-induced decrease of the classic inflammation parameters hsCRP/Il-6, probably expressing a downregulation of permanently prevalent inflammation processes. Simultaneously CS levels increased significantly. Our results show that increasing CS amounts are not simply to equal with an enhanced inflammation status and might even have beneficial effects on inflammation and angiogenesis.     

The De Kretser case: a note on Sri Lankan writing in English

Abstract

How is the content of a literary canon, or tradition to be configured? What counts as a literary archive? More than 25 years after Edward Said’s Orientalism (1978 Said, W. Edward. 1978. Orientalism, New York: Vintage.  [Google Scholar]), it seems reasonable to assume, that central to such traditions, would be the work of those who live and work in the society that gives rise to it. In this review, such a location of Michele de Kretser’s new novel, The Hamilton Case, is offered, as a caution to metropolitan literary critics who continue to approach Sri Lankan writing in English, as Christopher Columbus approached ‘America’. It is argued that the novel owes much to, and can be read as echoing and elaborating the detective fiction of S.W.R.D. Bandaranaike, who was, also, the fourth Prime Minister of Ceylon (Sri Lanka), 1956–59.