Bacteria , viruses and parasites are abundant in marine ecosystems and their abilities for rapid replication and host - specificity make them attractive hab controlling agents ; however , potential ecological impacts need to be taken into account 细菌、寄生虫和病毒等微型生物是天然水体中具有调节藻类种群动态平衡的重要潜在因子,它们的繁殖速度非常快,并具有宿主的专一性,是一种非常有潜质的赤潮调控因子。
The adding of process - control agent can effectively keep the powder from sticking to the milling ball and the inner wall of containers . the increase of rotating velocity and the ratio of ball to powder can accelerate the phase transformation and thus shorten the alloying time 加入过程控制剂,可以有效地防止粉末粘覆磨球和罐内壁;球磨转速的提高和球粉比的增加,都会加速相转变过程,从而缩短合金化时间。
A workflow model for the ship design process is designed . five agents , design activity agent , design assistant agent , design task control agent , project assistant agent and project control agent are designed to control the ship design process coordinately 本文给出了适合船舶产品协同设计的过程模型,设计了设计活动调度、设计助理、总设计任务调度、项目助理和项目调度等五种软件agent ,讨论了agent之间的会话模式和通讯方式。
2 . researching the cooperation and coordination function of multi - agent , at the same time , particularly analyzing the coordinating principle of multi - agent which was applied in the construction of asphalt concrete road surface , according to the controlling kernel of flowing material and constructing quality ; according as the principle , the course of controlling is actually the course of information streaming , so i respectively introduce the information collecting of different agents in road constructing . at the same time , i introduce the instruction forming of intelligent controlling agent and three kinds of fashions for human being - machine commensalisms , that is cooperation of machine and human agent , architecture of main - machine and assistant - human agent and architecture of main - human and assistant - machine agent , which was applied in different intelligent agent 对多智能体的协作与协调机制进行了阐述,并对多智能控制主体的以物流和质量控制为核心的沥青混凝土路面机群施工过程的协调作业原理进行了详细的分析;基于控制过程是信息流过程的观点,分别研究了各智能控制主体在路面施工中的信息集成;并在总结了智能控制主体的结构形式及三种人- -机共栖智能控制方式的基础上,根据本课题的实际,针对不同的智能体,分别确立了不同的控制方式。 3
1 . capacity and discharge efficiency of polyacene capacitors were systematically studies and electrolyte is aqueous and aqueous solution a series of pristine sample were prepared by pyrolysis of phenol formaldehyde resin moulded with znc , this inorganic salt used together with the resin served not only as the pore - forming agent to form open pores , which grow into a three - dimensional network structure in the cured material , but also as the microstructure - controlling agent to form a loose structure dopable with bulky dopants such as bf4 and so on 首次系统地研究了聚并苯导电材料作为双电层电容器的电极活性材料时,在水系和非水系电解质中的容量及库仑效率。用化学方法合成可溶性酚醛树脂,加入的zncl _ 2在聚并苯的制备过程中既是成孔剂,使在处理的材料中形成三维网状微孔,同时它又是微孔控制剂,形成能被bf4 -等体积较大的掺杂剂所掺杂的疏松结构。
The study results indicated that , arranged in the order of magnitude , the degrees of the effects on the cementing strengths of the two interfaces were the system , emulsion , main emulsifier , fluid loss control agent and white oil respectively ; the cementing strength would be doubled and redoubled after being cleaned by preflush , especially by the system , emulsion and fluid loss control agent ; and , along with the increase in the mix slurry ratio , the initial and final set times of slurry would be obviously lengthened and the compressive strength of bond cement would be remarkably reduced or the slurry wouldn ' t be even set 研究表明:对两界面胶结强度的影响由大到小依次是体系、乳状液、主乳化剂、降滤失剂、白油;前置液清洗后,胶结强度成倍提高,尤其对体系、乳状液和降滤失剂清洗效果最佳;随混浆比的增大,水泥浆初凝和终凝时间明显延长,水泥石抗压强度明显下降,甚至不凝。
Based on the extensive studies of subtilisin - like protease ( prl ) of metarhizium anisopliae , extracellullar serine protease is suggested to be a key enzyme involved in the fimgal penetration to invertebrates . the investigation of serine protease in the nematode infected by owvtl may help to understand the mechanism of nematophagous fimgi as biological control agents . a 3l kda serine protease was isolated and purified from the liquid culture of h rhossiliensis owvtl challenged with nematode panagrellus redivivus 本研究利用线虫诱导下owvt - 1菌株液体发酵,通过粗分级分离、离子交换层析和凝胶过滤层析分离提纯了一个分子量为31kda的丝氨酸蛋白酶,生物学测定表明其对大豆胞囊线虫二龄幼虫具有致死作用,同时测定了该酶理化特性,酶活力在75附近酶活力最高,随着ph的增加酶的稳定性升高,与胆碱酯酶具有相似的ph曲线,对特异性底物aape ( suc - ala - ala - pro - glu - pna )具有作用, ssi和ci - 2抑制该酶的活性。