关于机械能守恒定律的讨论

给出了守恒和守恒定律的定义，并给出了质点组的机械能及机械能守恒定律的表述，还对一些文献关于机械能守恒定律的论述进行了讨论     

Small giants from Madagascan caves: autapomorphic giantism in the new cave-dwelling planthopper Tsingya clarkei gen. nov., sp. nov. (Hemiptera: Fulgoroidea: Meenoplidae)

A new giant cave-dwelling species of planthopper of the family Meenoplidae (Fulgoromorpha) is described from the Tsingy de Bemaraha National Park in western Madagascar, with information on its distribution and ecology. As the new species could not be placed in any of the previously described genera, a new genus is established. This is the first record of a cavernicolous meenoplid from the Afrotropical Region, and the second cave-dwelling Fulgoromorphan species from Madagascar. It is also the second example of island gigantism in the Fulgoromorpha from Madagascar.     

Microhabitat use by the white‐clawed crayfish in a Tuscan stream

Habitat modification, pollution, overfishing, poaching, competition from non‐indigenous species, and diseases have led to the extinction in Europe of many populations of indigenous crayfish. Under the rationale that any programme of reintroduction should be preceded by a thorough understanding of habitat requirements of the species of concern, we studied the microhabitat use of an Austropotamobius pallipes population in Tuscany, central Italy. Microhabitat use was assessed for water depth, current velocity, substrate, percentages of boulders, underwater tree roots, and in‐stream vegetation cover. Results show that A. pallipes' habitat use is size‐partitioned. Smaller individuals mostly occupy stream edges in shallow waters with submerged roots, whereas larger individuals use deeper waters, often associated with boulders. Crayfish spatial distribution is restricted mostly to the microhabitats characterised by extensive cover and slow current velocity. The study highlights the importance of habitat heterogeneity and cover elements for the protection of this indigenous species.     

Redescription of Unio tumidiformis Castro, 1885 (Bivalvia,Unionidae), an endemism from the south-western Iberian Peninsula

The ground plan of the bot flies (Oestridae, part) is compared with those of Ephydroidea and Calyptratae. Comparative anatomy suggests that the bot flies are unlikely to have arisen from within Calyptratae and that their derivation from near the base of Ephydroidea is more probable. A large body of evidence is assembled to counter the theory that would place Oestridae within the Tachinidae family-group. It is shown that Hippoboscoidea is unlikely to be monophyletic. The fit of Glossinidae to the suggested ground plan profile of the Ephydroidea/bot flies is shown to be good.     

倾斜侧吹气流在液相中的轨迹

以动量定理为基础,建立了倾斜侧吹射流轴轨迹的数学模型。模型的主要特点是,对于侧吹倾斜射流,推导出无因次射流轴轨迹的微分方程。对于空气向水中喷吹,数值计算表明,本计算轨迹与实测射流的轴线一致。     

孝感市居住建筑节能现状调查分析及对策

根据孝感市气候特点及居住建筑特征,对孝感市既有居住建筑围护结构构造做法的热工性能进行了对比分析,表明日前孝感市居住建筑节能状况不佳.并分析了孝感市建筑节存在的问题,提出了推进建筑节能工作的建议.     

Training Load Monitoring Algorithms on Highly Sub-Metered Home Electricity Consumption Data

The growing interest in energy-efficient buildings is driving changes in investment, design, and occupant behavior. To better focus cost and resource conservation efforts, electricity consumption feedback can be used to provide motivation, guidance, and verification. Disaggregating by end-use helps both consumers and producers to identify targets for conservation. While hardware-based sub-metering is costly and labor-intensive, non-intrusive load monitoring (NILM) is capable of gathering detailed energy-use data with minimal equipment cost and installation time. However, variations in measurements between metering devices complicate the process of compiling the necessary appliance profiles. Future work involves the devel-opment of NILM algorithms using sensor fusion and detailed appliance-level data gathered from a highly-sensed house currently being constructed near Pittsburgh, Pennsylvania.     

推广建造淤地坝工程 实现山西蓝天碧水

介绍了山西省淤地坝的产生、发展和建设情况,阐述了太原市建设淤地坝所取得的生态效益及主要做法。     

基于能量守恒的半解析半数值多裂缝扩展模拟方法

为研究水平井在进行水力压裂时的裂缝扩展机理，本文将无量纲近似解与能量守恒相结合，建立一种半解析半数值的多裂缝扩展模拟新方法，并开发高精度和高效率的裂缝扩展程序C5Frac。使用该方法分别针对单裂缝和多裂缝扩展进行模拟，并使用ILSA II进行对比验证，结果表明：单裂缝扩展时，模型计算得到的裂缝半径、缝口宽度和进液效率与参考解的误差均在1%以内；多裂缝扩展时，模型计算得到的裂缝半径、缝口宽度和缝内流量与ILSA II模型非常接近，裂缝总面积与ILSA II模型的误差保持在5%以内，且运算效率得到明显提高。该模拟方法可以在保证结果准确性的同时大大减少计算时间，可为多裂缝扩展数值模拟研究提供新思路。     

能量集成改造的全局夹点分析法

考虑全局中各个过程之间以及与公用工程之间的相互影响，扩展夹点分析法于全局系统，提出了一种系统的全局能量集成改造方法。用该方法可进一步节省燃料或增加联产功，并应用实例证明了它的有效性。