Quantitative evaluation of air pollution in transport strategic environmental assessment: a case study based on uncertainty analysis and graphic information system technology

Although the impact of road transport on urban air quality has achieved a high profile in China, still greater attention is required as it has not yet been considered fully even in relation to the road network linking cities and urban areas. Strategic environmental assessment （SEA） is a systematic and comprehensive process for evaluating the environmental impacts of a policy, plan or program in publicly accountable decision-making. Air pollution has been recognized as a significant issue in most transport SEA practices. The Strategic Environmental Assessment of the Hubei Road Network Plan （2002-2020） （HRNP） was introduced as one of the World Bank＇s pilot SEA projects. An effective framework was developed to investigate the functional relationship between the road network and its potential air pollutant emissions. In this study, two indicators were identified： emission intensity/ inventory of pollutants and the spatial distribution of the most polluted areas. Because strategic actions are inherently nebulous and data quality is often disappointing, three alternative scenarios were employed to address uncertainties and data/scale issues. Calculations were made using emission models and results were analyzed with the help of statistical tools and the geographic information system （GIS）. The results from the project implementation and the feedback from the World Bank have both shown that the proposed framework is effective in the transport SEA process.     

Effect of interrupted endogenous BMP/Smad signaling on growth and steroidogenesis of porcine granulosa cells

Bone morphogenetic proteins (BMPs) play a critical role in the growth and steroidogenesis of granulosa cells (GCs). BMP signals act through membrane-bound heteromeric serine/threonine kinase receptors. Upon ligand binding, BMPs activate intracellular Smad proteins and regulate growth and apoptosis in various cell types. The objective of this study was to demonstrate the effects of BMP/Smad signal on growth and steroidogenesis of porcine GCs. A strategy of RNA interference (RNAi)-mediated ‘gene silencing’ of Smad4, a core molecule mediating the intracellular BMP/Smad signal transduction pathways, was used to interrupt endogenous BMP/Smad signaling. Results indicate that Smad4-small interfering RNA (siRNA) caused specific inhibition of Smad4 mRNA and protein expression after transfection. Interrupted endogenous BMP/Smad signaling significantly inhibited growth, and induced apoptosis of porcine GCs, while decreasing estradiol production. In addition, interrupted BMP/Smad signaling significantly (P<0.05) changed the expression of Cyclin D2, CDK4, Bcl-2, and Cyp19a1. These findings provide new insights into how BMP/Smad signaling regulates the growth and steroidogenesis of porcine GCs.     

论高职高专类院校中的“因材育人”

＂因材育人＂是＂因材施教＂理念含义之一。＂育人＂层面的因材而别,相对缺乏一些系统的研究,在实务中,因材而育的有意识的活动是相对欠缺的。因材育人,首先要做的是材质的界分,即首先在宏观上划分院校的类别层级,根据同一类院校教育受体的基本共性研究总体的育人方略;其次,细化到教育受体的一个个个体,根据不同的心理特性,调节具体的育人方法。     

艺术设计专业色彩教学的思维引导法初探

艺术设计教学是培养学生多种综合能力的专业活动,色彩作为视觉传达设计重要的设计语言和表达语言在艺术设计专业教学中起着举足轻重的作用,如何突破传统色彩教学方法的固有思维模式,以思维引导方法把学生引入对色彩的自由思维和设计领域,使学生从对色彩认识与设计的必然王国走向自由王国是本文探讨的主题。     

安顺市“十二·五”期间人才开发的对策

加强对安顺市十二·五期间人才开发的研究力度,通过对人才开发面临的问题及人才需求状况的分析,提出相应的对策措施,对于制定安顺市十二.五人才发展规划和安顺市十二·五经济社会发展规划,更好地实施人才强市战略,加强对人才的吸引、培养和使用,充分发挥好人才的作用,具有重要的指导意义。     

密蒙花不同部位挥发性成分研究

文章以贵州安顺地区野生密蒙花为原料,分别提取其干花、干叶精油,并应用GC/MS/DS技术,在干叶精油中共检出48种物质,鉴定38种,其主要成分由醇、酸、烷等三类化合物构成,涉及化合物共22种,次要成分由酮、醛、醚等三类化合物构成,涉及化合物共11种。在干花精油中共检出34种物质,并全部鉴定,其主要成分由醇类化合物构成,涉及化合物共18种,次要成分由醚、酮、酸、醛、烷等五类化合物构成,涉及化合物共14种。结果表明,由于花、叶处于植株的不同部位,生理作用各不相同,故所得精油的挥发性成分有较大的差异;此外,与大多数巳知的植物精油相比,密蒙花精油中酯类化合物的品种及含量均很低,这是其鲜花香气浓郁但欠柔和的重要原因。     

从方所范畴到语气范畴:句末助词在裹的由来

近代白话文献中的句末語氣助词在裹源自表方所意羲的在裹.在裹从方所范畴演变到语气范畴,语法化路径是:句末处所结构>时态助词>语气助词,所关涉的意义跨越空间、时态、语气三大范畴,其方所意义、功能不断泛化与句法位置、隐喻、重新分析、主观化等因素密切相关.     

从非理性因素论改进高职思想政治教育的对策

非理性是影响人、经济和社会活动的重要因素,也是思想政治教育必须予以关注的重点。本文基于高职院校思想政治教育工作实践,将非理性因素纳入思想政治教育视野之中,从关注非理性因素的角度,阐释非理性在思想政治教育中的重大作用,提出了改进高职院校思想政治教育工作的对策和举措。     

关于高职《机械设计基础》课程例题系统化探讨

以高职机械类和近机械类专业《机械设计基础》教材的例题设计为例,阐述了例题系统化的含义,介绍了例题系统化的方法,分析了例题系统化的效果,旨在为高职课程改革与教材建设提供借鉴。     

高职会计专业基本技能培养的探索

技能培养是高职教育中景重要的内容之一,财会专业的基本技能,可以为学生学习专业知识、熟练掌握专业技能和职业技能,提高工作效率,增强学生的思维活动,锻炼人的意志,培养创新能力、职业能力,为适应职业变化的能力打下坚实的基础.