试论漳州民间舞蹈的文化特征

漳州民间舞蹈具有“继承性、群众性、自娱性、民族地域性”的特点，其文化特征主要表现在：以人体保存文化和表现文化；群众间直接传承；从民间向舞台艺术升华三个方面。应深入挖掘漳州民间舞蹈的精粹并发扬光大。     

Synthesis and characterization of two new types of oxovanadium complexes with pyrazole as ligand

Coordination chemistry of pyrazole-base ligands has been extensively studied since the poly(pyrazole)borate was invented by Trofimenko in 1966[1―4]. A variety of bidentate or multidentate pyrazole-derived ligands have been employed in coordination chemis…     

Weakly-Singular Traction and Displacement Boundary Integral Equations and Their Meshless Local Petrov-Galerkin Approaches

The general meshless local Petrov-Galerkin (MLPG) weak forms of the displacement and traction boundary integral equations (BIEs) are presented for solids undergoing small deformations. Using the directly derived non-hyper-singular integral equations for displacement gradients, simple and straightforward derivations of weakly singular traction BIEs for solids undergoing small deformations are also presented. As a framework for meshless approaches, the MLPG weak forms provide the most general basis for the numerical solution of the non-hyper-singular displacement and traction BIEs. By employing the various types of test functions, several types of MLPG/BIEs are formulated. Numerical examples show that the present methods are very promising, especially for solving the elastic problems in which the singularities in displacements, strains, and stresses are of primary concern.     

采用非工程防洪措施降低洪灾损失的探讨

阐述了非工程防洪措施的概念及主要措施和特点,并提出了非工程措施与工程措施结合,从两方面降低洪灾损失的观点。     

贵州农业非点源污染影响因素区域差异性初探

贵州农业生态环境脆弱,随着农业经济的发展,农业非点源污染问题日渐加重,在一定程度上制约着农业可持续发展。本文阐述了贵州省非点源污染现状,以贵州省综合农业分区为基础,分析非点源污染影响因素在各农业区之间的差异,主要从自然环境、种植业、养殖业、社会经济、农业生产活动几个方面分析,以期为各区域有针对性地开展非点源污染防治提供依据。     

关于黎曼几何若干问题

总结了完备黎曼流形上完备的无共轭点测地线所隐含的几何性质、完备非紧具非负曲率黎曼流形的几何结构、完备非紧具非负Ricci曲率黎曼流形的几何拓扑性质以及完备非紧黎曼流形上的Busemann函数所隐含的几何拓扑性质,并提出了一些未解决的问题．     

非贵金属基催化剂用于催化降解有机污染物的研究进展

碳达峰、碳中和是一场极其广泛的绿色革命,可以推动经济社会高质量发展,对实现全球绿色转型具有重大意义。当前,随着环境问题的日益加剧,工业废水产生了大量有毒的有机化合物,将这些物质释放到水生环境中会对人类健康造成极大的威胁,因此,对有机污染物的合理处理变得尤为重要,制备具有高催化效率、高循环稳定性、低成本和绿色环保的非贵金属催化剂可以促进绿色可持续发展。阐述了非贵金属基催化剂的研究进展,包括最常用的单/双金属、单/双金属氧化物、层状双金属氢氧化物以及金属基复合催化剂,可以将有机污染物通过绿色环保的方法降解为无毒、无害的物质,符合可持续发展理念。对提高催化降解效果的关键影响因素进行了分析和总结,并对未来研发更加多样化的降解污染物的催化剂指出了方向。     

基于J函数建模的M油藏水淹层测井评价

滨里海盆地M油藏属于稠油油藏,目的层埋深较浅,储层较为疏松。油田开发主要以热采为主,水窜容易造成油藏水淹,且新井初期含水率较高,为此开展水淹层测井评价对于制定科学合理开发调整方案,提高油田开发效率具有重要的意义。通过J函数建模求取原始含油饱和度来评价水淹层,基于M油藏取芯井的岩心资料,结合粒度分析、铸体薄片、扫描电镜、物性分析及压汞实验等方法,通过毛管压力曲线对目的层J函数进行建模,计算原始含油饱和度,对比原始含油饱和度与目前含油饱和度评价水淹层。结合生产测试结论,证明J函数方法在水淹层评价方面效果较好,这种方法对于构造油藏水淹层评价具有重要的参考意义。     

DRNI型磁盘表面粗糙度非接触测量仪

本文论述了研制成的一种用于计算机硬盘盘片等超精密表面粗糙度非接触测量的智能化仪器;提出了基于外差干涉原理的平行双光束设计方案,简述了该测量仪结构、光学系统、驱动控制系统、光电转换系统、数据处理系统及精密定位系统;给出了表面粗糙度多刻线标准样板以及磁盘表面粗糙度的实测曲线.测试结果表明,该测量仪的示值误差优于3%,示值变动性小于±3%,可实现自动调焦自动测量.     

Occurrence of nitrification-denitrification and gaseous nitrogen loss process in flooded rice soil

Flooding in wetland rice fields soon after transplanting results in displacement of soil air (including O2). Thus any dissolved O2 in the pore water is consumed out by microbial respiration in a short period. Supply of O2 to the flooded rice soil is by diffusion of O2 through the standing floodwater and consumption at the soil-water interface, and by exudation of O2 by rice roots and subsequent diffusion of O2 into the rhizosphere. The greater potential consumption of O2 compared to the renewal rate results in the development of distinct soil layers: oxidized soil layers under soil-water interface and in the rhizosphere, and reduced soil layers or reduced bulk soil. Nitrification in oxidized soils and denitrification in reduced soils have been known. Currently, denitrification in oxidized soils, even in standing floodwater, has also been identified. In this article, we present a modified nitrification and denitrification occurring mechanism in flooded rice soil.