卧龙自然保护区华南豹的食性研究

通过华南豹的粪便分析，表明它常捕猎的食物是毛冠鹿（Ｅｌａｐｈｏｄｕｓｃｅｐｈａｌｏｐｈｕｓ），而后被竹鼠（Ｒｈｉｚｏｍｙｓｓｉｎｅｎｓｅ）所取代．其食谱以１５种大中型兽类所组成，偶食一些雉类、家畜、草和泥土．食谱变化的原因可能与它们捕食的几率有关，或因竹子开花死亡捕食行为发生了改变，而与捕食的难度和效率有关．     

一类Cauchy型积分的边界性质

在C~空间中由C~((1))类函数定义的闭光滑可定向流形上,应用同伦理论讨论一类Cauchy-Fantappie型积分的边界性质,得到了Coxonkuu-Plemeli公式。     

无界时延混合Petri网(UTHPN)的可覆盖性演变图及性质

时延混合Petri网(THPN)是由David最早提出的一类混合Petri网模型,而构造时延混合Petri网的演变图是对其性质进行分析的有效方法.赵义军等在文[1]中给出了有界时延混合Petri网的演变图构造方法及性质分析,但对无界的时延混合Petri网,其演变图却不能用同样的方法构造出来.在本文中,通过引入无界量符号ω,给出了UTHPN的可覆盖性演变图的构造方法,并在此基础上讨论了UTHPN的有关性质.     

N,N—二环己基硫脲萃取Au（Ⅲ）的性能和机理的研究

本文报导了N,N—二环己基硫脲在氯仿介质中革取Au(Ⅲ)的性能,研究了盐酸浓度、萃取剂浓度、氢离子浓度、氯离子浓度对分配比的影响。研究结果表明N,N—二环己基硫脲苹取Au(Ⅲ)的反应平衡式为:(?)     

异种钢熔化焊接头氢的扩散行为

本文全面地分析了用奥氏体型填充材料焊接珠光体异种钢接头氢在焊接过程不同阶段、不同部位的扩散和聚集特点,并建立了相应的氢的扩散模型。所得结论为深入研究氢在异种钢接头延迟裂纹形成中的作用奠定了一定的理论基础。     

“高校学生工作计算机管理系统”总体设计

本文提出了“高校学生工作计算机管理系统”的总体设计方案，具体地讨论了系统的总控流程图、系统各组成部分的功能、系统支撑环境和用户界面，概述了数据库设计和信息代码设计的总原则．     

以牲畜摄取行为决定植物种的选择和放牧管理方法

放牧系统中，在管理决策方面牲畜的摄入和牧草的选择是很重要的．按照牲畜的摄取行为，来决定植物种的选择和放牧方法是成功的农场管理的先决条件．     

Mating behaviour,territoriality and natural history notes of Phyllomedusa ayeaye Lutz, 1966 (Hylidae: Phyllomedusinae) in south-eastern Brazil

The mating (male courtship, amplexus and oviposition) and male territorial behaviours of Phyllomedusa ayeaye are described from a high-altitude site in the state of Minas Gerais, south-eastern Brazil. Information related to male breeding success and territoriality, as well as egg clutch parameters, is provided, together with qualitative information regarding tadpole phenology and juvenile recruitment. In addition, estimations of sexual dimorphism and numbers of marked individuals are available through capture-mark-recapture sampling. Females bred with males within spatially clustered oviposition sites (broadleaf plants). In some cases, the amplectant couple actively searched for the oviposition site. Males defended territories from other males, employing both acoustic and physical interactions. Some males successfully maintained their calling sites over successive nights, and others seemed to switch among nearby sites during successive nights and tried to disrupt ongoing ovipositions. No significant relationship was found between physical attributes (snout vent length or body mass) of males with breeding success. Also, no influence of the number of nights a male was active in chorus and its breeding success was detected. Therefore, it is proposed that the mating system in P. ayeaye may be opportunistic. Additional information related to reproduction (egg clutch parameters and breeding behaviours) is also discussed for other species of the Phyllomedusa hypochondrialis group and compared with the results of the present study.     

Behaviour and habitat of Neohela monstrosa (Boeck, 1861) (Amphipoda: Corophiida) in Norwegian Sea deep water

There are few in situ observations of deep-sea macrofauna, due to the remoteness of this ecosystem. Visual surveys conducted for marine management by MAREANO, (marine area database for Norwegian waters) and the petroleum industry (by SERPENTS, scientific and environmental remotely operated vehicle partnership using existing industrial technology) have provided unique material of visual information from large areas in the Norwegian Sea. The distribution, density and behaviour of the deep-sea amphipod Neohela monstrosa (Boeck, 1861) is described based on videos and samples from the Norwegian Sea. This amphipod is common on mud bottoms at 200–2181 m depth in the area. Dense communities were found in stands of the arctic sea pen Umbellula encrinus at more than 1000 m depth where temperatures were below 0° C. The mean density of N. monstrosa observed for larger areas was 4/100 m² but densities of 15–36 individuals per m² were found in local patches. It is domicolous which is characteristic of the superfamily Corophiida and digs burrows in soft muddy bottoms primarily by using large shovel-like gnathopods to scoop the sediment out. The amphipod was observed pushing and rolling sediment balls out of its burrow, which were probably held together with amphipod silk. It digs out an upper 3 to 4 cm wide burrow with a horizontal side burrow a couple of centimetres down. Neohela monstrosa appears to feeds on newly settled detritus that it collects from the surface sediment through the use of its long antennae while the burrow is mainly used for protection against predators such as demersal fish. Newly released juveniles are probably kept in the burrow for protection. Based on the local high density of N. monstrosa together with its habit of making long burrows, we suggest that there is significant bioturbation associated with the presence of N. monstrosa in deep sedimentary habitats of the Norwegian Sea, which likely provides an important ecosystem function.     

深深的怀念——我所知道的许宝(马录)先生

本文对我国著名数理统计学家许宝騄先生的品格、治学态度、求实精神以及工作作风进行了追叙,作者最深的印象是:他对科学事业的执着追求,对学生的真切关心,在他身上,很好体现了中国传统文化中宝贵的精神财富.