线粒体蛋白组研究进展

线粒体蛋白组是指在线粒体中出现的所有蛋白质的集合,包括线粒体自身基因组编码的和 由核基因组编码的蛋白质.线粒体作为真核生物的重要细胞器,它参与去除氧化、产生能量和还原 性物质等等一些重要的生命活动过程.这些功能都依赖于线粒体蛋白组中的蛋白河的相互作用.要 对其有一个较为全面的认识,就必须对其蛋白组进行广泛且深入的研究.根据现有的一些研究成 果,对线粒体蛋白组在起源与进化、跨膜运输、研究方法和计算机预测作了简要综述.     

蒙山脆枣与枣及酸枣亲缘关系的研究

以蒙山脆枣及山东省内的9个枣品种和32个酸枣类型(株系)为试材,采用形态学分析和RAPD分析,对蒙山脆枣与枣及酸枣的亲缘关系进行研究,并初步探讨了蒙山脆枣的起源及枣的演化过程。形态学性状数据主成分分析结果表明,蒙山脆枣第1主成分值为5.42,第2主成分值为0.64,介于枣品种和酸枣类型之间,地位较为特殊。对形态学性状数据聚类,结果表明,蒙山脆枣先与酸枣1号在6.40阈值处聚为一类,再与大枣品种的聚类群在11.75阈值处聚为1类之后,才与其它酸枣类型的聚类群聚为一类,显示出蒙山脆枣的分类地位介于枣和酸枣之间。进一步的RAPD分析结果表明,蒙山脆枣与酸枣亲缘关系较近。蒙山脆枣果实长2cm左右,外果皮较薄,中果皮较厚,平均单果重为3.64g,叶片纵横径为6.93cm×3.08cm,形态学性状与枣接近,推测蒙山脆枣可能为供试酸枣类型与枣品种的中间类型。     

浅析当前在校大学生心理现状、成因及对策

大学生的心理现状令人担忧。心理问题的形成不仅受到个体自身因素的影响，而且受到家庭、社会、学校等外界环境因素的影响。只有从两方面共同着手，来改善和调节大环境和小环境，才能使其朝着健康的方向发展。     

浅析英汉习语来源之共性

习语是一个民族智慧的结晶,是语言中的精华.凡历史悠久的语言无不有着内容丰富的习语.通过劳动和生活、神话和寓言、历史事件、宗教影响、文学语言、外来语的影响、科技的发展等不同层面,采用对比分析的方法,证实了英汉这两个分属于两个半球的语言,特别是习语,在产生的土壤、演化的历程和来源等方面有非常多的共性.     

The specific contribution of object''''s origin on artifacts categorization

Gelman and Bloom found that adults and children's object naming was sensitive to how an object was created (man-made or not), but they did not reveal on which specific level of conceptual system this effect was. Using a free-naming task and a force-choice task, two experiments were conducted to test a hypothesis that this effect was specifically on domain level ("artifact/non-artifact" distinction). In Experiment 1, participants were asked to name shortly-depicted objects, rate their confidence, and report their reasons for each naming response. Results showed that most of the naming responses in "man-made" condition were in artifact domain, and most in "natural" condition were in non-artifact domain, although in both conditions names were very divergent on basic level. In Experiment 2, another group of participants were asked to choose one from two names (one in artifact domain and the other in non-artifact domain) to match the same shortly-depicted objects presented in the first experiment. Re-sults of Experiment 1 on domain level were replicated in Experiment 2. These convergent findings supported the hypothesis that the effect of object's origin is specifically on domain level of conceptual system of objects. Reasons explicitly reported for naming responses in Experiment 1 suggested that participants might automatically infer objects' functions in "man-made" condition but not in "natural" condition. Here the function-based hypothesis of artifacts classification is discussed.     

NEW OBSERVATIONS OF THE LOBOPOD-LIKE WORM FACIVERMIS FROM THE EARLY CAMBRIAN CHENGJIANG LAGERSTTTE

THE EARLY CAMBRIAN CHENGJIANG LAGERST?TTE HAS BEEN CELEBRATED FOR ITS EXCELLENTLY PRESERVED SOFT-BODIED FOSSILS, WHICH ARE SIGNIFICANT FOR UNDER- STANDING THE EVOLUTION OF METAZOANS. ONE OF THE RARE WORM-LIKE FOSSILS, FACIVERMIS YUNNANICUS[1], WHICH HAS5 …     

多架山崩塌成因初步分析

甘肃省卓尼县境内多架山在水电站建设过程中忽略了地质灾害的存在.对其危险性认识不足.致使电站建成运行后发生数次山体崩塌,造成财产损失.通过卓尼县境内多架山崩塌成因的初步分析和探讨,结合其威胁和危害对象,说明了我省开展的建设项目地质灾害危险性评估工作的重要性和必要性.     

类书的起源与归部分类问题探析

论述了我国古代类书的起源及历代封建统治者组织编纂类书的政治目的,列举了我国历代书目中对类书的归部分类情况,并提出了在古籍书目的各部类和当代图书书目的各学科及综合性图书类均设立相关类书类目的建议。     

天然气压缩机转子结垢成因探讨

对D10R9B型离心式压缩机转子结垢形成的机理进行了研究.D10R9B型离心式压缩机转子结垢,破坏了转子动平衡,使压缩机振动幅度超标,导致压缩机多次停机的事故.借助于气相色谱、X光衍射等分析手段,对原料气和积垢样品的组成进行了分析,结果发现,造成压缩机转子结垢主要有两大类固体物质:一类是无机硫化合物、铁氧化物,一类是矿物"粉尘".研究表明:压缩机转子结垢形成的主要原因是铁的氧化物(FexOy)和硫化物(FenSm)的存在.根据研究结果,提出了减振处理建议.     

论文艺起源研究的原始生存切入——对原始文艺的目的论解读

在逻各斯中心主义知识背景下。对原始文艺目的论的解读采取的是功能主义方式,这种解读是对原始文化价值意义的猜想性抑或实证性的还原,这种还原无不被更大的学术旨趣——生存目的论所统辖。