上海隆线隐翅虫亚族分类研究(鞘翅目:隐翅虫科)

在中国上海隆线隐翅虫亚族的分类研究中,共鉴定出隆线隐翅虫亚族3属共3种:赤翅隆线隐翅虫Lathrobium dignum Sharp,1874,黑纹伪隆线隐翅虫Pseudolathra lineata Herman,2003和翅斑细项隐翅虫Tetartopeus gracilentus Kraatz,1859.首次报道了赤翅隆线隐翅虫Lathrobium dignum和翅斑细项隐翅虫Tetartopeus gracilentus在上海的分布.首次给出了赤翅隆线隐翅虫Lathrobium dignum和黑纹伪隆线隐翅虫Pseudolathra lineata的雌性特征图,并对其主要雌性分类特征进行了描述.     

Restoration of rat calvarial defects by poly（lactide-co-glycolide）/ hydroxyapatite scaffolds loaded with bone mesenchymal stem cells and DNA complexes

A composite construct comprising of a bone mesenchymal stem cell (BMSC) sheet, plasmid DNA, encoding human bone morphogenic protein-2 (hBMP-2), and poly(lactide-co-glycolide)/hydroxyapatite (PLGA/HA) sponge was designed and employed in the restoration of rat calvarial defects. To improve gene transfection efficiency, a cationic chitosan derivative, N,N,N,-trimethyl chitosan chloride (TMC), was employed as the vector. The TMC/DNA complexes had a transfection efficiency of 13% in rat BMSCs, resulting in heterogeneous hBMP-2 expression in a 10-d culture period in vitro. In vivo culture of the composite constructs was performed by implantation into rat full-thickness calvarial defects, using constructs lacking pDNA-hBMP-2 or BMSC sheets as controls. Significantly higher heterogeneous expression of hBMP-2 was detected in vivo at 2 weeks for the cell sheet/DNA complex/scaffold constructs, compared with the constructs lacking pDNA-hBMP-2 or BMSC sheets. New bone formation was evident as early as 4 weeks in the experimental constructs. At 8 weeks, partial bridging of calvarial defects was observed in the experimental constructs, which was significantly better than the constructs lacking pDNA-hBMP-2 or BMSC sheets. Therefore, the combination of the PLGA/HA scaffold with BMSC sheets and gene therapy vectors is effective at enhancing bone formation.     

西宁市工业设计服务平台中图形库系统集成技术研究

文中将西宁市工业设计服务平台中的图形库作为研究对象,以计算机辅助工具为例,分析了CAD/CAPP/CAM集成的关键技术问题.为了实现图形库系统的集成,提出利用XML技术来作为解决CAD/CAPP/CAM集成中关键技术的最佳方案.     

喷射混凝土加固墙体施工技术

根据校安加固工程施工情况,从喷射混凝土施工工艺流程、原材料及配合比、喷射作业以及喷射混凝土的强度检验等工序介绍了喷射混凝土在砖混结构加固工程中对砖墙加固的施工技术.     

如何应对大学生炒股现象

笔者简述了全民炒股时代的到来对大学生炒股造成的利与弊,以及高校对大学生的炒股现象应如何正确引导.     

用数轴法判断中心原子的杂化类型

提出了用数轴判断中心原子轨道杂化方式的方法、应用及规律.     

激素处理对葡萄果实经济性状的影响

采用不同种类激素对黑龙江省保护地栽植的中早熟品种无核白鸡心、红光无核、京秀、京玉等四个品种进行了实验处理.不同种类和浓度的激素影响葡萄的果实大小、单重、果实可溶性固形物.     

FeNi软磁镀层巨磁阻抗效应的研究

用异常共沉积电镀的方法,在ＢｅＣｕ基片上镀制Ｆｅ２０＋δＮｉ８０－δ镀层,主要研究阴极电流密度和电镀时间对镀层的磁性和磁阻抗效应的影响,ＦｅＮｉ镀层的磁阻抗特性同材料的软磁性能密切相关,观察到最大的磁阻抗效应达３５％。     

类锂O^＋5离子共振态的多通道复数转动计算

目的 研究类锂Ｏ＾＋５的三激发态能级结构,电子间的关联效应以及自离子宽度。方法 用马鞍点复数转动方法计算Ｏ＾＋５的波函数和马鞍点能量,采用多通道耦合和分通道求和两种方法计算俄歇宽度和位移。     

地裂缝场地隧道暗挖地表沉降影响因素分析

以西安地铁6号线区间隧道穿越f8地裂缝为工程背景,对传统交叉中隔墙(cross diaphragm,CRD)工法隧道开挖施工穿越地裂缝场地全过程进行了三维有限元动态数值模拟,分析了开挖方向、隧道埋深、隧道洞径以及隧道穿越地裂缝的角度4个因素对暗挖隧道穿越地裂缝场地施工地表沉降的影响.结果表明:地表沉降曲线随开挖进尺均呈...