浅谈高中气候体系教学

在进行高中地理学习的时候,"气候"可以说是非常关键的一堂课,同时也是进行教学很重要的一个部分,也是高中地理知识中的一个难点。所以在进行教学的时候就要摸清整个气候知识体系的框架结构,根据脉络进行知识的整体教学规划。     

谈环境监察对节能减排的促进作用

环境监察是直接而具体的环境保护行为,是国家环保部门进行监督、强性执法的方式,是对环境进行有效监督的方法。环境监察需要执法部门现场进行监督与处理。具有直接性、强制性。大多分为事前、事中与事后监察。环境监察范围主要是对乱排放污染物,对生态造成破坏的单位或个人及时进行检查、处理。有些情况下,需要进行强制性执法。     

浅析高中语文教学的有效性

有效性是评价课堂教学一个非常重要的方面,是进行课堂教学创新的目标之一,是课程与教学改革的核心话题之一。下面笔者将对高中语文课堂的有效性进行简要探索。首先,对高中语文教学有效性的特征及其原因进行说明,然后对目前高中语文教学中"有效性"不足的表现部分进行说明,最后是结合前文提出提高高中语文教学的建议和意见。     

学情前测,让体育技能学习更有效

学情前测是教学设计的重要组成部分,与教学设计的其他内容有着紧密的联系,是教学目标设定的基础,是教学内容分析的依据,是教学策略选择和教学活动设计的落脚点。学情前测是对以学生为中心的教学理念的具体落实。学生是学习的主体,要想有针对性地进行教学设计,必须进行学情前测,应着重分析学生的起始能力、已经形成的背景知识和技能及学习者是怎样进行思维的。教学设计前的学情前测可以通过书面的知识前测,学生访谈等形式进行。     

也给作业设计支个招

学生完成作业是完成教学任务的一个重要环节,是充分运用所学知识进行实践运用的途径,也是教师进行教学效果反馈的重要举措。作业本身具有不可替代的重要功能。     

如何在小学数学教学中培养学生的自主学习能力

对小学生进行自主学习能力的培养是新课程标准提出的明确教学目标,也是小学数学课堂教学中的重点。自主学习能力是学生进行终身学习的基础,学生可以利用信息技术手段,利用科学的学习方法进行自主学习,也可以通过小组合作进行自主学习,从中获取新知,提高技能,形成能力,进而利用所学知识服务生活,达到学以致用的目的,收到预期的教学效果。     

循环流化床锅炉超低排放技术研究

近年来,国家对环保问题十分关注,对各行各业环保发展也是十分重视,其中在发电行业中,国家也是提出了十分严格的锅炉排放要求。循环流化床锅炉是重要的发电设备,也是火电发电中燃料主要燃烧的部位,往往也是造成排放超标的主要原因,为了实现其环保效果,也是不断进行超低排放技术的研究,下面,本文就针对循环流化床锅炉超低排放技术进行研究,来对其技术进行深入的了解。     

可再生能源资源的系统评价方法及实例

对可再生能源资源进行评价是对可再生能源资源进行综合规划的一个良好前提。因为能源规划的各国环节之间都是相互关联的,所以能源资源评价不能够独立的进行存在。对于可再生能源资源来说,主要的评价内容除了要考虑储量之外,还要注意可再生能源资源的开发利用以及进行全面的市场分析。在当前,对于可再生能源资源的评价体系还没有系统的形成,所以本文主要是根据可再生能源资源的特点进行分析,并对其评价方法进行了研究。     

试论投资项目环境评价的理论基础

对投资项目进行环境影响评价是人类社会发展的必然产物,是人类实现可持续发展的必然要求,是有效解决人类生态困境的根本性环节之一.目前对投资项目的环境影响评价明显不足,现阶段,应加强其理论基础的研究.以可持续发展为目标对环境生态学、环境经济学和环境系统科学等相关理论进行深入的研究,并采取相应措施是进行有效环境影响评价的重要保证.     

用动态的观点进行环境综合质量评价

强调用动态的观点进行环境质量评价,着重对如何从方法上体现这种观点进行了探索,提出了“变权”思想,设计了“权”调整公式,并依此对新疆库尔勒市环境综合质量进行了评价,其结果表明该方法在实际应用中是可行的,也是较合理的。     

青春 责任 梦想 行动 2015年千名青年环境友好使者夏令营侧记

<正>"我们处在世界正在发生重大变革的时代,中国也正在实现着民族伟大复兴的关键时刻。青年人要承担什么责任?""我们应该团结更多的青年人,向全社会积极宣传环保理念,保护我们共同生存的家园。"一名青年使者刚刚回答完贾峰主任的问题,全场响起的是掌声——雷鸣般的掌声!8月17日,2015年"千名青年环境友好使者夏令营"在成都市温江区正式开营。环境保护部宣传教育中心主任贾峰亲临现场,并为青年学子们讲授了热情     

Asbeste Arten,Entstehung, Bedeutung,Problematik

Types of asbestos are distinguished not only by structure, chemical compositon, shape of aggregates, and length and quality of fibers, but also by its formation. Though consisting of quite common elements, deposits are formed only under very special conditions. Its unique combination of properties has created over 3000 fields of application (about 70% in asbestos cement). Great efforts have been made to substitute all types of asbestos by harmless, similarly cheap and versatile synthetic fibers, owing to the unquestioned carcinogenic properties of all asbestos dusts. However, development of such fibers has not made any remarkable progress until recently. Consequently risk to workers in mining and manufactoring, consumers, outsiders, and the environment should be kept as low as possible by intensifying precautions and diminishing emissions.     

Effect of CaO on retention of S, Cl, Br, As, Mn, V, Cr, Ni, Cu, Zn, W and Pb in bottom ashes from fluidized-bed coal combustion power station

This work was conducted to evaluate whether Ca-bearing additives used during coal combustion can also help with the retention of some other elements. This work was focused on the evaluation of bottom ashes collected during four full-scale combustion tests at an operating thermal fluidized-bed power station. Bottom ashes were preferred to fly ashes for the study to avoid interference from condensation processes usually occurring in the post-combustion zone. This work focused on the behaviors of S, Cl, Br, As, Mn, V, Cr, Ni, Cu,Zn, W, and Pb. Strong positive correlations with CaO content in bottom ashes were observed（for all four combustion tests） for S, As, Cl and Br（R = 0.917-0.999）. Strong inverse proportionality was calculated between the contents of Pb, Zn, Ni, Cr and Mn and CaO, so these elements showed association to materials other than Ca-bearing compounds（e.g., to aluminosilicates, organic matter, etc.）. Somewhat unclear behaviors were observed for W, Cu, and V. Their correlation coefficients were evaluated as statistically ＂not significant＂, i.e., these elements were not thought to be significantly associated with CaO. It was also discovered that major enrichment of CaO in the finest bottom ash fractions could be advantageously used for simple separation of elements strongly associated with these fractions, mainly S and As, but also Cl or Br. Removal of5% of the finest ash particles brings about a decrease in As concentration down to 77%-80% of its original bulk ash content, which can be conveniently used e.g., when high As content complicates further ash utilization.     

珊瑚钨锡矿硅质尾矿中Cd、As、Zn、F富集迁移及环境污染

硅质尾矿在释放中性矿山废水(NMD)时所伴生的多元素复合污染问题值得重视。本文以桂东北珊瑚矿尾矿作为研究对象,通过分析该尾矿的组构、元素富集及迁移特性,筛选出主要污染元素,并探讨尾矿胶结层对元素富集迁移的影响。结果表明:(1)该尾矿中Cd、As、Zn及F富集程度较高、可交换态含量(易迁移释放量)较大,是主要的污染元素,而Cu、Pb、Tl产生污染的可能性较小;(2)胶结层对重金属具有再富集作用,但其对可交换态Cd、As(Tl)再富集明显,而对可交换态Cu、Pb、Zn再富集则不明显。胶结层中次生伊利石、石膏等胶结物趋向于吸附富集活性可交换态Cd、As。这表明该尾矿可能迁移释放出含Cd、As浓度较高的NMD。研究表明,硅质尾矿风化释出NMD的同时,可能伴生Cd、As、Zn等重金属以及F的复合污染。     

Algorithmen,gehirne, computer

In order to say something substantial about the fundamental limits of machines (especially of computers) and of human calculations, we must explicate the concept of algorithm. Such an explication is provided by the Turing machine. Thus, problems have been discovered which cannot be solved algorithmically. For other problems there are problem-solving procedures, but no elegant algorithms. That men are fundamentally superior to machines has not been shown as yet.     

意大利的金枪鱼、箭鱼、鸬鹚以及家燕等体内的多氯萘、多氯联苯、多氯二苯-p-二恶英、多氯二苯并呋喃以及p,p''''-DDE

我们曾对从意大利收集的金枪鱼、箭鱼、普通鸬鹚以及家燕体内的p,p'-DDE、多氯联苯同类物(PCBs)、多氯二苯-p-二恶英(PCDDs)、多氯二苯并呋喃(PCDFs)以及多氯萘(PCNs)浓度进行过测量.     

The monitoring,Evaluation, reporting,verification, and certification of energy-efficiency projects

In this paper, we present an overview of guidelinesdeveloped for the monitoring, evaluation, reporting,verification, and certification (MERVC) ofenergy-efficiency projects for climate changemitigation. The monitoring and evaluation ofenergy-efficiency projects is needed to determine moreaccurately their impact on greenhouse gas (GHG)emissions and other attributes, and to ensure that theglobal climate is protected and that countryobligations are met. Reporting, verification andcertification will be needed for addressing therequirements of the Kyoto Protocol. While the cost ofmonitoring and evaluation of energy-efficiencyprojects is expected to be about 5–10% of a project'sbudget, the actual cost of monitoring and evaluationwill vary depending on many factors, including thelevel of precision required for measuring energy andGHG reductions, type of project, and amount of fundingavailable.