细粒棘球蚴脂肪酸转运蛋白生物学特性分析

本研究根据NCBI GenBank数据库中的Eg-FATP氨基酸序列,采用生物信息学方法分析细粒棘球蚴脂肪酸转运蛋白(Eg-FATP)理化性质,亚细胞定位、抗原袁位、信号肽、跨膜区二级和三级结构、系统进化树、蛋白互作网络等,并通过qPCR方法探究其在原头蚴和包囊壁的差异表达,旨在为后期相关的研究提供理论支持和数据参考....     

环境因子对凯里市区公园夏季鸟类群落结构的影响

为了对凯里市区公园建设规划提供理论依据,2011年夏季对贵州省凯里市区5个公园的鸟类进行了调查,并分析了鸟类群落特征与环境因子的关系。记录到的鸟类4目18科31种。其中:雀形目鸟类28种,占总种数的90.32%;优势种为麻雀(Passer montanus)、白头鹎(Pycnonotus sinensis)和大山雀(Parus major),分别占总数量的22.91%、15.69%和14.54%。Pearson相关分析表明:鸟类种类和数量分别与海拔高度、公园面积、公园周长、水域面积、草本盖度显著正相关(P<0.05),与乔木盖度显著负相关(P<0.05);鸟类密度与硬质地面、灌木盖度和游客量显著正相关,与海拔高度、公园面积、乔木盖度显著负相关;Shannon-Weiner指数与海拔高度、灌木高度显著正相关。凯里市区公园在建设中可考虑增加公园内的水域面积、灌木和草本盖度,适量减少乔木面积。     

双孢蘑菇三种类型菌株的RAPD扩增研究

用７２个随机引物,对三种类型双孢蘑菇菌株２７９６（杂交型）,８２１１（优质型）,０１（高产型）等进行了ＲＡＰＤ扩增,发现２６个引物均产生三种不同的带型。用该２６个引物进一步作三种类型９株双孢蘑菇白色菌株的ＲＡＰＤ扩增,发现引物Ｕ１６,Ｕ２０,Ｂ１,Ｈ４,Ｈ５,Ｍ７能很好地区分三类菌株,尤以Ｕ２０和Ｈ５为佳,其产生的三种带型稳定整齐,差异带明显,为双孢蘑菇菌株特性的早期预测提供了ＤＮＡ水平的标记。     

双孢蘑菇分解基质能力退化的同工酶分析

采用同工酶聚丙烯酰胺凝胶电泳(polyacrylamide gelelectrophoresis,PAGE)技术,对双孢蘑菇(Agaricus bisporus) 菌株0214及其分解基质能力退化菌株0214-3、0214-5在4种不同液体培养基中培养的菌丝体的酯酶(esterase,EST)、 多酚氧化酶(polyphenoloxidase,PPO)、细胞色素氧化酶(cytochrome oxidase, COD)同工酶进行分析,结果表明:在部分培养基中3个菌株的EST和PPO同工酶表型有明显差异,且2个退化菌株的同工酶表型变异一致,说明双孢蘑菇分解基质能力的退化与EST和PPO同工酶活性存在相关性.各菌株在不同培养基中的COD同工酶酶谱表型一致.     

潮式卤水禽肉制品工业化安全生产技术

针对地方传统美食——潮式卤水禽肉制品的特色和特性,采用食品防腐栅栏技术、卤水汤料的配方定量标准化生产等现代生产技术,形成适合潮式卤水特色产品的工业化安全生产方法,达到实施潮式卤水食品安全生产技术综合应用的目的。     

Modeling studies on sulfur deposition and transport in East Asia

A three dimensional regional Eulerian model of sulfur deposition and tranport has been developed. It includes emission, transport, diffusion, gas-phase and aqeous-phase chemical process, dry depostion, rainout and washout process. A looking up table method is provided to deal with the gas-phase chemical process including sulfur transfer. Calculated values have reasonable agreement with observations. Distribution of sulfur deposition and transport in East Asia are also analyzed in the paper. Simulation shows that sulfate (SO ₄ ^2– ) is the main substance to transport in long range transport. Some amount of sulfur emission of different countries transport across boundaries, but the main origin of sulfur deposition in each country in East Asia is from herself. Furthermore, some transport paths on different layers and outlet or inlet zones are found.     

Numerical Study of Cloud Effects on Tropospheric Ozone

An elaborate cloud chemistry box model hasdeveloped in which gaseous-phase photochemistry iscoupled with aqueous-phase chemistry to investigate thevariation of ozone concentration and its distributionfeatures above and below cloud, and in its upper andlower part, with results compared to observations. Thecloud chemistry model is composed of three parts:gaseous-phase chemistry, aqueous-phase chemistry, andscavenging of soluble gases. The cloud influence on theozone concentration can be separated into three portions:1) the change of solar radiation flux by cloud which isresponsible for decreasing or increasing of photochemicalreaction in the troposphere and thus reducing orenhancing the concentration; 2) direct absorption ofozone and its precursors (NO _x, NMHC,free radicals, etc.) by in-cloud liquid water; 3)aqueous-phase chemical reaction happening to speciesabsorbed by cloud, responsible for the change in gaseous-phase ozone concentration. Numerical simulations showsubstantial difference in the importance regarding theeffect of these factors on ozone between these levels anda close relation of cloud physical structure to thefactors. The results agree well with the observations.