A fast and effective method to perform paternity testing for Wolong giant pandas

Captive populations provide a precious genetic resource for endangered animals and a source of individuals for reintroduction to depleted habitats. Therefore, accuracy in determining paternity is of vital importance for managing captive populations and in selecting representative individuals of known genetic characteristics for release. In this study, we established a fast and effective method to conduct paternity testing for captive giant pandas in the Wolong population. This technique uses two highly poly...     

A novel method for ionizing radiation-induced RNA damage detection by poly（A）-tailing RT-PCR

Ionizing radiation (IR) causes severe cellular damage both directly and indirectly and disrupts RNA integrity. RNA strand breaks are the most frequent type of damage caused by IR. RNA damage is involved in the development of degenerative diseases, including Alzheimer’s disease and Parkinson’s disease. However, the mechanism of mRNA damage and any resulting pathophysiological outcomes are poorly understood. This is partly because there is a lack of sensitive tools to monitor damage randomly occurring in RNA,...     

新型薁并[1,2-f]苯并[1,4]二氮卓类衍生物的合成与表征

以1-甲酰基-2-甲氧基薁-3-甲酸甲酯为反应底物,通过与邻苯二胺缩合、烷基化、脱羧等过程,成功地制备了新型薁并[1,2-f]苯并[1,4]二氮卓类衍生物.反应收率良好、操作简单、条件温和.产物结构通过红外光谱、核磁共振谱、质谱及元素分析证实.     

1,2-二甲基-3-丁基咪唑硫酸氢盐离子液体的合成及其性质研究

介绍了在室温下设计合成的一种功能化离子液体1,2-二甲基-3-丁基咪唑硫酸氢盐离子液体[mmBim][HSO4]均为在不同温度下测定了该离子液体的密度、表面张力、粘度和电导率等性质,并根据特定的经验方程,估算了该离子液体的热膨胀系数、标准熵和晶格能等性质参数,为该离子液体的预期应用提供了重要的数据参考.     

Arthropod trace fossils from the Zhujiaqing Formation (Meishucunian, Yunnan) and their palaeobiological implications

1　Biostratigraphicbackgroundandgeologi calsettingIneasternYunnan ,thesupra tointertidaldolomitesoftheXiaowaitoushanMember (Upper mostDengyingFormation =LatestSinian)areun conformablyoverlainbythesubsequent (earliestCambrian) phosphoritesoftheZhujiaqingFormation(MeishucunianStage) .TheoutcropsnearMeishucuninJinningCounty ,southwestofKunmingrepresentsakeysectionforthePC/CtransitionontheYangtzeplatform[1] .TheZhujiaqingFormationbelongstotheEarlytoMiddleMeishucunian (=Nemakit DaldynSt…     

A quantum algorithm for searching a target solution of fixed weight

To search for a target n-product Boolean vector of fixed weight d, we propose an important method involving the notion of a fixed-weight "vector label" accompanied with a vector label restoration algorithm. Based on these, we present a new quantum algorithm designed to search for a fixed-weight target whose computation complexity, specifically O (（Cdn+1）^1/2) , is better than that for a classical algorithm. Finally, we use the procedure to search for the NTRU private key as an example to verify the efficiency of the new algorithm in searching for fixed-weight target solutions.     

再生骨料混凝土在新疆地区的效益分析

本文总结国内外建筑垃圾处理现状和再生骨料的应用情况;结合新疆地区的实际情况,采用对比的方法,分析新疆地区普通混凝土和再生骨料混凝土的生产成本。研究得出再生骨料混凝土具有很好的经济效益、社会效益、环保效益以及很好的市场应用前景。     

六甲基二硅胺烷催化芳香醛与2,2-二甲基-1,3-二烷-4,6-二酮的缩合反应

在六甲基二硅胺烷的催化作用下,以芳香醛与2,2-二甲基-1,3-二烷-4,6-二酮为原料,经缩合反应合成了10种芳基亚甲基麦氏酸化合物.考察了反应温度、反应时间、催化剂用量等因素对反应的影响.确定了最佳反应条件为:取0.1 mol 2,2-二甲基-1,3-二烷-4,6-二酮, n(2,2-二甲基-1,3-二烷-4,6-二酮)∶n(芳香醛)=1.01.1,∶催化剂用量为0.1 mol,反应温度为室温,反应时间为1.0 h,在上述反应条件下,产品收率可达86.8%~92.1%.     

变系数 mKdV 方程的精确解

利用李群方法研究以时间为变系数的 mKdV 方程,找到了变系数方程的李代数、优化系统、相似约化、精确解.通过优化系统得到变系数 mKdV 方程的精确解.另外,借助假设的孤立波方法得到了变系数的 mKdV 方程的一个精确孤立子解     

三色马先蒿、决明子、连翘抗运动性疲劳的活性研究

目的研究三色马先蒿、决明子和连翘的抗运动性疲劳作用.方法以小鼠游泳训练为模型,观察上述三味中药对4周递增大强度负荷运动小鼠体重、食欲等疲劳相关症状和体征及力竭游泳时间的影响.结果实验第四周末单纯运动组小鼠活动减少,毛发枯萎,无光泽,有的小鼠出现大片脱毛现象,食欲减少,体重降低;而运动+决明子组、运动+连翘组和运动+三色马先蒿组上述疲劳相关的症状与体症明显减轻,食欲增加,体重持续增长.单纯运动组小鼠力竭游泳时间明显低其余三组,P <0.01.运动+三色马先蒿组小鼠力竭游泳时间明显高于运动+决明子组和运动+连翘组小鼠,P <0.05;与阳性对照组(人参提取物)比较,差异无显著性,P >0.05.结论三色马先蒿、决明子和连翘均具有一定的抗运动性疲劳作用,但以三色马先蒿的效果最好