Mating behaviour,nympho-imaginal development and description of a new Mesabolivar species (Araneae: Pholcidae) from the Brazilian dry forest

A new species of Mesabolivar is described from Brazilian forests: Mesabolivar delclaroi. The mating behaviour, postembryonic development, number of egg sacs and eggs, birth rate, number of instars, developmental time until adulthood, sex ratio and size of cephalothorax (per instar) were recorded. The sexual behaviour was described and categorized into four steps: courtship, pre-copulation, copulation and post-copulation. After hatching, individuals presented five instars until maturity. The mean number of eggs (42 ± 16.6) and live births (31.5 ± 3.4) of the first egg sac were significantly greater than that of a second one (23.8 ± 3.8, and 19.25 ± 3.9, respectively). The developmental time from birth to adulthood (130.8 ± 9.6 days) did not differ significantly between egg sacs produced (128.61 ± 11.1). The size of the cephalothorax did not differ among adults or between sexes. The sex ratio revealed a shift in favour of females (4: 3).     

Studies on gorgoderid digeneans from Australian and Assian Freshwater fishes

Pseudophyllodistomum gen. nov. is proposed for a section of Phyllodistomum Braun, 1899. The new genus is distinguished by the simple form of the uterus, the eggs which reach over 60 μm long in length, the saccular excretory bladder, the 2[3 + 3 + 3) + (3 + 3 + 3)] = 36 flame-cell formula, the metacercaria which may have fully developed genitalia and is parasitic in decapod crustaceans, the use of corbiculid bivalves as first intermediate hosts, and the cercaria which has a long tail not enclosing the cercarial body. Two species, P. johnstoni sp. nov. and P. murrayense sp. nov., are described from Australian freshwater fish and five new combinations of previously described Phyllodistomum species from Asian freshwater fish are proposed — P. macrobrachicola (Yamaguti, 1934) comb. nov., P. lesteri (Wu, 1938) comb. nov., P. srivastavai (Rai, 1964) comb. nov., P. lucknowense (Pandey, 1970) comb. nov. and P. mingense (Tang, 1985) comb. nov. The first intermediate host of P. johnstoni is a Corbiculina species. The long-tailed cercariae infect the gonads of palaemonid prawns, Macrobrachium spp., in which they grow to unencysted metacercariae which may have fully developed genitalia. The metacercaria of P. murrayense also infects a Macrobrachium species. The evolution of the Gorgoderinae is discussed and it is suggested that, prior to the erection of Pseudophyllodistomum, Phyllodistomum may have encompassed as many as five different phylogenetic lines, each with similar adult morphology but distinguishable by life-cycle characters. It is postulated that more study will lead to further division of Phyllodistomum.     

无油润滑压缩机活塞环使用寿命的探讨

分析了目前推广应用无油润滑技术过程中压缩机活塞环因其材料、工艺操作条件、检修质量等各种因素引起其使用寿命变化的情况，对延长其使用寿命的方法进行了探讨。     

低碳生活的非线性规划

文章首先在查找资料的基础上充分认识低碳生活,给出了低碳生活的定义,并给出一组关于各项生活行为的单位消耗量的碳排放量指标和消费支出的数据。随后建立了以最低碳排放量为目标的非线性规划模型。考虑到在减少碳排放的同时要兼顾生活质量的保证,利用模糊方法建立各类消费支出的生活质量模糊隶属函数,保证生活质量不低于人均生活质量水平。通过优化求解,得到一组满足要求的各项生活行为的需求值。最后,在分析结果的基础上提出了家庭日常生活减少碳排放量的措施,为指导低碳生活的发展提出一些建议。     

以科学发展观为指导做好高校离退休人员工作

高校离退休人员是一个特殊的群体,在他们当中蕴藏着丰富的智力资源,同时也有特殊的精神和物质需求.当前,应以科学发展观为指导,在经济社会快速变革的大背景下,考虑到他们的特点,充分发挥他们的特长,在做好常规工作的同时,精心为他们提供全方位的服务,让他们安度晚年,并发挥他们的才智,以保障高校校园的和谐稳定和健康发展.     

2，6-二硝基甲苯和间硝基氯苯水中光分解

在北纬 4 0°和春季阳光下 ,研究纯水与江水中 2 ,6 -二硝基甲苯和间硝基氯苯的光化学反应 ,分别得到它们的光解速率常数和半衰期 .结果表明 ,无论在纯水或江水中 ,2 ,6 -二硝基甲苯的光解速度均比间硝基氯苯快 .2 ,6 -二硝基甲苯在江水中的光解速度比纯水中有所加快 ,而间硝基氯苯的光解速度则相对减慢     

“乡间的生死,泥土的气息”——台静农短篇小说《红灯》赏析

皖西籍作家台静农是现代著名乡土小说家,其代表作之一的《红灯》,通过德银娘悲惨命运的描写,一方面揭示了二十世纪初皖西乡村社会的闭塞落后以及人们精神生活的愚昧与迷信,另一方面也表现了德银娘深沉博大的母爱。小说描绘了一幅具有皖西地方色彩的民情风俗画,有力地表现了＂乡间的生死＂,洋溢着浓郁的＂泥土的气息＂。     

中国古代人与树木共时伴随理念的宗教基因

中国古代存在着人与树木共时伴随的生存理念，树木及其材质充实着先民的生存空间，形成了古代典型的文化景观。古先民对树木及其材质的选定与确认，不单纯是实用价值取向，还有其潜在的宗教因素。树木及其材质不仅是先民的生存资料，更重要的是先民的信仰对象。在古老的宗教信仰层面，升华了人与树木的深切情感，构筑了人与树木共时存在的坚固理念。人与树木形成了生命共振，体现出人与自然亲和的生命状态。古先民正是在崇高的宗教信仰层面，实现了自身与树木之间的生命能量转换，形成了千古执着的家居理念。     

试论生活品质的审美内涵

生活品质作为一个城市建设的核心理念,涉及人们生活的各个方面,包含着丰富的审美内涵。生活品质的审美内涵主要包括生活品味、生活风格及生活情趣。生活品味是人们对生活的无穷玩味,是对生活的审美反思;生活风格是人的精神气质和生活方式或生活形式完美融合的生活过程;生活情趣是人们对生活态度的积极向上的审美情感体验。     

从生活方式的选择上重新审视相对贫困

贫困问题是世界各国普遍关注的问题，也是目前人类尚未解决的一大难题，在中国全面建设小康社会的过程中，消除贫困显得尤为重要，在新的时代，贫困现象呈现了一系列新的特点与形式，只有对这些新的特点有了明晰的认识，反贫困才能更有成效，文章就是主要关注于目前相对贫困的界定，并介入到现代生活方式中进行研究。