关于《中图法》第四版现代舞、交际舞及体育舞蹈类目设置的探讨——兼与张晶老师商榷

针对现代舞、交际舞、体育舞蹈等类图书归类时出现的归类混乱的问题进行了详细分析,指出了《中图法》四版在此类类目设置的不足之处,并提出了解决问题的办法。     

基于OPAC日志的读者需求分析

OPAC日志中详细记录了读者的访问活动,通过对OPAC日志的深入分析,可挖掘出读者的各种需求信息。为了更好地了解读者的需求。实现对图书馆决策的支持,本文以汇文的OPAC系统为例深入研究了OPAC日志分析的方法和过程。并给出了具体的实现方法、分析实例和结果。     

湖南永州地区钙质页岩土壤动物群落多样性研究

通过对永州不同生境设立5个样区进行取样调查,共获得土壤动物2024头,隶属于5门、10纲、31目、111科、共152种。其中垫刃目、弹尾目、蜱螨目属于优势类群;矛线目、膜翅目等14个目属于常见类群,构成了永州土壤动物的主体。不同生境中土壤动物的种类和个体数量都有一定的差异,苗由和杉树林远远大于其它3个生境。土壤动物的垂直分层也比较明显,种类和个体数量随着土壤层次的加深而减少,具有明显的表聚性。对各生境的密度一类群指数DG、丰富度指数D、多样性指数H、优势度指效c、均匀性指数E和相似性系数进行分析,结果表明,植被类型、土壤有机质含量是影响土壤动物群落结构的主要生态因子。     

四川主要粮食作物生产成本收益分析

粮食生产是四川农村家庭收入的重要来源之一,降低粮食生产成本是增加农民收入的重要途径。本文利用四川省农经总站对岳池、仁寿、渠县、泸县、平武、简阳、新都7个县(市、区)的120户农户连续11年的定点调查数据,比较分析了四川水稻、小麦、玉米和红苕等4种主要粮食作物的生产成本、产值和收益等,提出了提高粮食生产效益的建议。     

黄河源区建植19年人工草地生物结皮CO2通量与叶绿素荧光参数的变化

为了解黄河源人工草地不同类型生物结皮和植被群落CO2释放和固定的变化特征,并探讨二者的影响因子,本文通过调查黄河源建植19年人工草地不同类型生物结皮CO2通量和植被土壤特征变化发现:藻和地衣结皮CO2通量均显著小于苔藓结皮(10.58μmol·m-2·s-1)(P<0.05);苔藓结皮对应的植被群落CO2通量(11.5...     

茶叶中EGCG改善肥胖大鼠肠黏膜屏障损伤的作用研究

为探究EGCG对高脂诱导肥胖大鼠肠黏膜屏障损伤的保护作用,将雄性SD大鼠随机分为正常组、肥胖组、EGCG低剂量及高剂量干预组,每组8只.通过分析大鼠的体重、血清指标、脏器指数及脂肪组织病理切片评估肥胖大鼠脂质聚集与炎症状况及EGCG的干预作用.通过分析肠道病理切片、绒毛长度/隐窝深度值(V/C值)以及血清中脂多糖(LP...     

不同光质LED光照对草菇菌丝生长速度、菌丝分支与生物量的影响

通过探索LED光源在草菇栽培上的精准化应用,为工厂化草菇栽培提供理论依据.以草菇V23为材料,设置LED光质6个处理:对照白光(CK)、红/蓝=1:1、红/蓝=1:2、红/蓝=2:1、单红光、单蓝光,研究不同光质对草菇菌丝生长的影响.结果发现,红光与蓝光的比为1:1菌丝长势表现为较强,对其他指标影响不明显.不同LED光...     

The peroxisomal matrix shuttling receptor Pex5 plays a role in FB1 production and virulence in Fusarium verticillioides

The peroxisomal matrix oxidase,catalase and peroxidase are imported peroxisomes through the shuttling receptors,which regulates the cellular oxidative homeostasis and function.Here,we report that PTS1 shuttling receptor FvPex5 is involved in the localization of PTS1,utilization of carbon sources and lipids,elimination ROS,cell wall stress,conidiation,fumonisin B₁(FB₁) production,and virulence in maize pathogen Fusarium verticillioides.Significantly,differential expression o...     

香蕉MaSULTR3家族成员的全基因组鉴定与不同温度下表达模式分析

利用生物信息学分析法对香蕉MaSULTR3基因家族成员进行全基因组鉴定、蛋白特性分析、分子进化树分析、启动子顺式作用元件分析以及低温胁迫下叶片转录组的FPKM值分析;其后,利用基因组数据结合RT-PCR方法克隆了'天宝蕉'(Musa spp.,AAA Group)组培苗MaSULTR3.1-2基因的ORF序列;最后,利...     

Effects of bFGF on brain edema,nerve function injury and autophagy related protein in rats with traumatic brain injury

AIM:To study the effects of basic fibroblast growth factor (bFGF) on brain edema, nerve function damage and autophagy related proteins in rats with head injury. METHODS:The rat model of craniocerebral injury (CI) was constructed. The rats were divided into control group, CI group, and low-, middle-and high-dose bFGF groups (n=10). The CI model was established in CI group, while the rats in control group were not given epidural impact. The rats in low-dose, middle-dose and high-dose bFGF groups were given bFGF at 2, 4 and 6 μg, respectively, by intraperitoneal injection after 30 min. The neurological function in the rats was evaluated by improved neurological function scoring. The rat brain tissues were taken, and the water content was detected. The levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and IL-1β in the brain tissue were measured by ELISA. The malondialdehyde (MDA) content was analyzed by thiobarbituric acid method. The activity of superoxide dismutase (SOD) was examined by WST-8 assay. The glutathine peroxidase (GSH-Px) activity was detected by colorimetric method. The protein levels of autophagy related proteins LC3-Ⅱ and beclin-1 in the brain tissues were determined by Western blot. RESULTS:The neurological function score was increased significantly of the rats in CI group. The rat model of craniocerebral injury was successfully constructed. Neurological function scores in the rats in low-dose, middle-dose and high-dose bFGF groups were reduced, the water content of the brain tissue was also reduced (P<0.05). The levels of TNF-α, IL-6 and IL-1 β were decreased in the brain tissues (P<0.05), the content of MDA was declined (P<0.05), the activities of SOD and GSH-Px were increased (P<0.05), the protein levels of LC3-Ⅱ and beclin-1 were decreased, compared with the untreated rats in CI group (P<0.05). CONCLUSION:bFGF improves the nerve function of the rats with craniocerebral injury, reduces the water content of the brain tissue, reduces the expression of autophagic protein LC3-Ⅱ and beclin-1.The mechanism is related to the inhibition of inflammatory reaction and oxidative damage.