母猪生殖器官的淋巴流向初探

用３０％普鲁士兰氯仿溶液，对１０例杂交母猪的生殖器官作皮内、浆膜下和粘膜下注射，观察了母猪生殖器官的淋巴流向。     

福宝山红花莼菜生殖器官解剖研究

红花莼菜生殖器官的外部形态和内部的解剖结构研究结果表明：两性花，花被片６枚；雄蕊１７－２７枚，没有腺毛；心皮６－１１枚，离生单雌蕊，上位子房，其主头、花柱、子房密生腺毛；边缘胎座胎座柱状，与珠柄垂直接合，接合处关节明显，直垂式弯生胚珠１－３枚。通过对红花莼菜生殖器官形态和解剖结构的分析，支持莼菜属从睡莲科划分出来，设置莼菜科的观点。     

冀东地区夏播大豆品种农艺性状和产量形成规律的探讨

通过在冀东地区三年的田间试验和室内测定,探讨了来源于不同地区的大豆品种在冀东夏播条件下的农艺性状、生育期结构、器官平衡和产量构成因素。试验结果表明:原产地不同的品种在冀东夏播条件下,农艺性状、生育期结构、生育期比(R/V)、生物学产量、经济系数等都呈现规律性变化。夏大豆籽粒产量与株高、主茎节数、分枝数、单株荚数、单株粒数和百粒重均呈正相关。从回归方程算出冀东地区夏播大豆品种要获得150～200kg/mu的籽粒产量,对主要农艺性状的要求是:株高65cm以上,主茎16节左右,分枝数1～1.28个。在2.5～3万株/mu的密度条件下,单株荚数25个左右。单株粒数45个左右,百粒重15g以上,单株粒重在7～9.5g左右。生物学产量应达到450～600kg/mu,经济系数达到0.35,全生育期与产量呈极显著正相关。冀东地区夏大豆较佳的生育期结构是:出苗至开花期(V_～R_1)30～35d左右,开花至成熟期(R_1～R_8)60d左右,全生育期90～95d左右,生育期比(R/V)值在1.8～2.1左右。吉林、辽宁、北京及石家庄的大豆品种可作冀东地区夏播大豆的重要品种资源。     

内毒素性休克时血清的特异荧光研究

本文以大肠杆菌内毒素攻击介导的感染性多系统脏器功能衰竭家兔为模型，探讨了血清的特异荧光。应用发光理论讨论了模型血清的分子光谱，以及感染性多脏衰竭进程与特异荧光的关系。同时，还制定了血液、心、肝、肺、肾各组织器官中脂过氧化物代谢产物丙二醛和超氧化物歧化酶变化情况，结果具有明显的相关性和一致性。荧光法可作为感染性多脏器衰竭的早期诊断预示的一种方法。     

我国现阶段产生腐败的原因及遏制对策

在社会主义初级阶段产生腐败的原因 ,主要是剥削阶级的腐朽思想和习惯势力的影响 ;党内思想政治教育薄弱 ;法制不严 ,依法惩治腐败的力度不够。因此 ,遏制腐败必须加快建立社会主义市场经济及其适应的各项秩序 ;加强廉政制度建设 ,从制度上遏制腐败的产生和蔓延 ;加强党内思想政治教育 ;建立健全党内外监督体系 ,强化监督机制     

生命科学及其相关学科的研究(七)

论述了端粒酶与癌症、转基因技术治癌、抗虫转基因作物培育、人工控制牛性别技术、转基因猪与人类器官移植以及超级杂交稻的研究现状,并对其产生的效益进行了分析。     

In vivo behavior of carboxymethylcellulose based microgels containing 67Cu

Using a mouse model, an organ distribution for microgels of carboxymethyl cellulose cross-linked with ⁶⁷Cu²⁺ ions was investigated and compared with the distribution of free ⁶⁷Cu²⁺ ions from ⁶⁷CuCl₂. The clearance of the microgels through both liver and kidneys was demonstrated. An additional examination of distribution for [³H]CMC microparticles and [³H]CMC–Cu microgels revealed no copper release from the microgels in vivo.     

Application of Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to Multi-Element Analysis of Human Organs

Abstract

Elemental concentrations of internal organs (cerebrum, cerebellum, heart, spleen, liver and kidney) of Japanese were measured with inductively coupled plasma mass spectrometry (ICP-MS). Sixty-one elements were determined simultaneously, and concentrations of some trace elements in human organs, on which information are scarcely available in the literature, were obtained. The analytical values obtained by ICP-MS and those by other methods were compared and fairly good agreement was found for Cd, Zn and Fe. Moderate agreement was found for Se and Hg, but discrepancy was observed for Mg and Na. Unacceptable values were obtained for some elements, such as Ti, Sc or Ge, probably due to polyatomic molecular interference.     

Influenza virus pathogenicity regulated by host cellular proteases,cytokines and metabolites,and its therapeutic options

Influenza A virus (IAV) causes significant morbidity and mortality. The knowledge gained within the last decade on the pandemic IAV(H1N1)2009 improved our understanding not only of the viral pathogenicity but also the host cellular factors involved in the pathogenicity of multiorgan failure (MOF), such as cellular trypsin-type hemagglutinin (HA₀) processing proteases for viral multiplication, cytokine storm, metabolic disorders and energy crisis. The HA processing proteases in the airway and organs for all IAV known to date have been identified. Recently, a new concept on the pathogenicity of MOF, the “influenza virus–cytokine–trypsin” cycle, has been proposed involving up-regulation of trypsin through pro-inflammatory cytokines, and potentiation of viral multiplication in various organs. Furthermore, the relationship between causative factors has been summarized as the “influenza virus–cytokine–trypsin” cycle interconnected with the “metabolic disorders–cytokine” cycle. These cycles provide new treatment concepts for ATP crisis and MOF. This review discusses IAV pathogenicity on cellular proteases, cytokines, metabolites and therapeutic options.     

气相色谱-质谱法同时测定环境土壤中21种有机氯农药

建立了气相色谱-质谱法同时测定环境土壤中21种有机氯农药的分析方法。环境土壤基质经过萃取、净化和浓缩后用气相色谱-质谱法进行测定。研究结果表明:21种有机氯农药在0.2~4.0mg/kg范围内线性关系良好,相关系数大于0.997 9。4,4'-DDT和2,4'-DDT的检出限为0.02mg/kg,其余19种有机氯农药的检出限为0.01mg/kg。在0.25mg/kg添加水平下的回收率为62.5%~103.0%,RSD为4.8%~9.1%;在0.80mg/kg添加水平下的回收率为70.8%~99.8%,RSD为3.2%~7.4%。本方法适用于环境土壤基质中21种有机氯农药的同时测定,为土壤环境中有机氯农药检测方法拓展提供参考。