基于SWOT分析的土地复垦模式研究——以克俄露天采矿区土地复垦模式为例

简要介绍了SWOT方法,然后将之应用于克俄露天矿区土地复垦模式的评价中,通过对比分析,将较为复杂的关系通过矩阵形式清晰地表现出来,指明了该复垦模式未来发展的战略方向。研究表明,SWOT方法在土地复垦模式发展方向的表达上是非常直观有效的,在逻辑上也是严密合理的。     

Cloning of Buffalo AQP9 Gene and Analysing its Expression in the Buffalo Tissues

Cloning buffalo AQP9 gene and analyzing its expression in buffalo tissues.A pair of primers was designed according to the released bovine AQP9 sequences in GenBank,which was used to clone buffalo AQP9 gene.The AQP9 gene was amplified by RT-PCR,whose nucleotide sequence and protein structure were analyzed by bioinformatics methods.The expression of AQP9 in buffalo tissues was assayed by Real-time quantitative PCR.The expression of AQP9 gene in buffalo ovary and testis tissue was detected by immunohistochemical staining method.The results showed that the cloned ORF length of buffalo AQP9 gene was 888 bp,which coded 295 amino acids.The results of multiple sequence comparison showed that the nucleotide sequence of buffalo AQP9 shared 99%,90%,97% and 88% homologeous compared with that of Bos taurus,Sus scrofa,Ovis ariessis and Homo sapiens,respectively,while shared 99%,86%,97%,83% homologeous for amino acids,respectively.Phylogenetic tree analysis indicated that AQP9 gene was highly conservative in the evolutionary process.Real-time quantitative PCR results showed that AQP9 gene expressed in buffalo liver,lung,brain,skin,testis and ovary tissues with different levels,had the most abundant expression in liver,followed by in skin and testis,less observed in lung and ovary.The results of immunohistochemical staining showed that the expression of AQP9 protein varied with the development of buffalo ovarian tissue,and gradually enhanced with follicle development.In testicular tissue,AQP9 protein expressed in spermatocyte and leydig cells of developmental stage testis.These results indicated that we had successfully cloned buffalo AQP9 gene sequences.The expression and its function of AQP9 in buffalo ovaries and testes might play an important role in follicle development and spermatogenesis.     

中国图像工程:2015

目的 本文是关于中国图像工程的年度文献综述系列之二十一。为了使国内广大从事图像工程研究和图像技术应用的科技人员能够较全面地了解国内图像工程研究和发展的现状,能够方便地查询有关文献,且向期刊编者和作者提供有用的参考,对2015年度图像工程重要文献进行了综述分析。方法 从2015年在国内15种有关图像工程重要中文期刊的共148期上所发表的2975篇学术研究和技术应用文献中,选取出723篇属于图像工程领域的文献,并根据各文献的主要内容将其分别归入图像处理,图像分析,图像理解,技术应用和综述5个大类,然后进一步分入23个专业小类(与前10年相同),并在此基础上分别进行了各期刊各类文献的统计和分析。结果 根据对2015年统计数据的分析可看出:图像分析正得到最多关注,目标跟踪的文献数量有明显增加,图像分割和边缘检测仍然是研究重点,图像匹配融合及其在遥感测绘等的应用再次成为热点。结论 我国图像工程的2015年研究深度和广度仍在提高和扩大,保持了快速进展的势头。     

淡水环境中可溶有机质研究进展

论述了淡水环境中可溶有机质(DOM)在分离与分析方法、来源与特征,以及环境意义等方面的研究进展。指出了在分离方法上,从XAD树脂分离到反渗透膜分离已经发展出各种分离技术;在分析方法上,现代波谱分析技术得到了广泛应用。DOM是由在来源、年龄、存在状态、后生改造等方面存在巨大差异的不同有机质混合构成的,因而呈现出十分复杂的非均质结构。DOM通过其自身的生物可利用性、改变有机污染物和重金属的生物可利用性及其耗氧能力影响环境质量,而且其自身的一些地球化学特征也能用来反映环境的变化特点。最后简述了湿地淡水环境中DOM的研究趋势和展望。     

Opelug-ontspanning op Boseiendomme

Insect-induced damage to leaves, and the growth phenology, of Olea europaea subsp. africana and Kiggelaria africana near Stellenbosch (33° 56'S, 18° 52'E) were monitored at weekly intervals between July 1980 and June 1981. The average incidence of damaged leaves was greater in K. africana than in O.e. africana (14 vs 10 %, respectively). In both species, leaf-damage appeared to be slightly more than twice as great in January-June than in July-December, and insect attacks on leaves apparently began to intensify after the plants had completed their main growth and production of new leaves in the austral spring. These findings are discussed in relation to the meagre published information on herbivory in the fynbos biome.     

ZFS4800型液压支架的结构分析与强度计算

液压支架是煤炭工业中最主要的支护设备,为工人安全生产和设备的正常工作提供了保证.介绍了液压支架的工作原理,并使用Solid-edge软件对液压支架进行三维建模,完成了对液压支架的虚拟装配.通过对ZFS4800型液压支架的结构简化和分析,建立了液压支架的强度计算过程,结果表明其性能可靠.     

台湾中部地区短延时降雨强度初步探讨

台湾地区在经历1999年的921地震后,山坡地土体松动严重,仅仅短延时的降雨即有机会引起土石流的发生,而近年微小的降雨条件下即有可能触动土石流发生,因此将台湾中部地区14个测站所测得的台风降雨资料,依照台风降雨强度进行水文频率分析,分析方法采用对数常态分布法、极端值第一类分布法、皮尔逊第三类分布法及对数皮尔逊第三类分布法等4种方法,计算短延时重现期距并绘成降雨强度-延时-频率之分析曲线,再整合各区域土石流潜势溪流的分布情况,分析台风降雨对台湾中部地区所造成之影响.     

伊川县创建国家级园林县城的可行性分析

指出了在"十二五"时期,伊川将创建国家级园林县城,结合此创建指标,探讨了从综合治理、绿地建设、建设管控、生态环境、节能减排等方面的体制保障和技术创新,阐明了创建国家级园林县城的可行性。     

我国发展现代风险导向审计的对策与建议

本文研究了现代风险导向审计在我国的运用前景,分析了依托我国最新的审计风险准则,发展现代风险导向审计的方法,提出了在我国推行现代风险导向审计的几条政策建议。