oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 24 )

2018 ( 503 )

2017 ( 525 )

2016 ( 562 )

Custom range...

Search Results: 1 - 10 of 39260 matches for " 何林肯 "
All listed articles are free for downloading (OA Articles)
Page 1 /39260
Display every page Item
某硫铁矿尾矿库区土壤对Mn2+、Fex+、Cu2+的吸附性研究
武 鑫, 万军伟, 张慕远, 林肯, 梅伟标
地质科技情报 , 2014,
Abstract: 尾矿库区土壤金属污染严重影响了库区的生态环境,而金属离子在土壤中的危害性大小取决于其进入土壤之后的吸附-解吸、形态转化、迁移等。为了进一步预测和防治土壤金属污染,取某硫铁矿尾矿库区土壤进行室内批淋滤实验,结果表明:淋滤液中金属离子初始浓度越大,越有利于土壤对金属离子的吸附;淋滤液的pH越小,越不利于土壤对金属离子的吸附。土壤对Mn2+的吸附规律更符合双常数方程,对Fex+、Cu2+的吸附规律更符合Elovich吸附速率方程。假设土壤中金属离子可全部溶出,在1∶25土液比的实验条件下金属离子Mn2+、Fex+、Cu2+的持续溶出时间分别为3.28,284.5,1.224d,实际中造成的污染将更加严重。吸附量、吸附速率及分配系数均与淋滤液中金属离子初始浓度及土壤中背景浓度呈正相关关系,土壤中金属溶出时间则与土壤中金属元素背景值呈正相关关系。
评“宇宙与爱因斯坦”
林肯·巴奈特,任鸿隽,汪容
科学通报 , 1952,
Abstract: 题名为“大宇宙与小宇宙”(中国科学图书仪器公司印行)的任鸿雋先生的译文集中收集了两篇文章,第一篇是巴奈特原著的“宇宙与爱因斯坦”,第二篇是肯斐尔特原著的“镭发见后物理界的革命”。任鸿雋先生在序文中声称这两篇那是很好的通俗科学文章,但是我们在其中却看到了资
再评电子静质量不断增长假说

科学通报 , 1977,
Abstract: 1974年5月,本文作者在《科学通报》上撰写了《“不断创造物质”的学说必须批判》一文,该文批评了F. Hoyle所鼓吹的质量和能量守恒定律可以任意破坏的“不断创造物质”的学说,批评了由F. Hoyle,J. V. Narlikar所提出、由唐孝威同志所支持的“电子静质量不断增长”的假说。此后,在《科学通报》、《复旦大学学报》上又陆续刊登了从不同角度来讨论这一
不同分级标准对高背景值农田土壤重金属质量评价的差异性分析——以尤溪县为例
Different Classification Standards of High Background Values of Farmland Soil Quality Evaluation of Heavy Metals Analysis of the Differences—In Youxi County
 [PDF]


Advances in Geosciences (AG) , 2014, DOI: 10.12677/AG.2014.44027
Abstract:
本文选用当前我国现行的土壤环境质量标准、土壤养分分级标准、环境背景值和人体健康风险评价限制四种标准值对矿区农田土壤质量进行评价,同时综合指数评价法对比评价农田土壤重金属污染现状。结果表明:由于国家土壤环境质量标准、土壤养分分级标准值较低,导致区域整体评价结果较差,均无法给予当地农田土壤生态质量正确的评估。以省级区域环境背景值上限值为标准进行评价,7种重金属仍均有超标,其中铜、锌、镉、铅、汞变异系数较大,分别为131%、137%、111%、237%和103%。基于现场调研结果,采用人体健康风险评价法,整体上尤溪县的基本农田土壤受到了轻度污染,健康总风险指数平均值为0.583,达到慢性参考剂量。
This paper selected the existing soil environmental quality standard GB, soil nutrient classification standard, environmental background value and limit of four human health risk assessment standards of our country to evaluate farmland soil quality, and comparatively evaluated the heavy metal pollution’s situation of farmland soil by synthesizing index evaluation method. The results showed that due to soil environmental quality standards of the state, soil nutrient grading standard is low, leading to bad evaluation results of regional overall assessment, and the right evaluation of ecological quality of the local farmland soil cannot be given. Evaluating with the standard of the provincial level upper limit of regional environmental background values, there were still 7 kinds of heavy metal exceeding; the variable coefficient of copper, zinc, cadmium, lead, mercury was 131%, 137%, 111%, 237% and 103% respectively, which was large among others. Based on the research results, adopting the human health risk assessment method, it was found that the basic farmland soil was slightly polluted in Youxi County; the average total health risk index was 0.583, reaching chronic reference dose.
成都市高校开展网球运动现状及发展对策研究
Research on Influencing Factors and Strategies of Tennis in Colleges and Universities
 [PDF]


Advances in Physical Sciences (APS) , 2013, DOI: 10.12677/aps.2013.11002
Abstract:

随着国民生活水平的不断提高,在全民健身运动的推动下,网球运动也走进了高校校园。但是网球运动在我国的开展比较晚,各高校由于客观条件的制约,阻碍了网球运动在高校的快速发展。本文采用问卷调查法,对成都市10所高校网球运动的开展情况做了全面的调查和分析,找出成都市各高校网球运动开展所遇到的问题及影响因素,并提出有利于网球运动在高校发展的对策和建议,为我国高校网球运动的推广和可持续发展提供理论依据。
With the continuous improvement of living standards, to promote national fitness movement, ten-nishas entered the university campus. But the tennis is relatively late in China and as a result of objective conditions, the universities hinder the development of tennis in Colleges and universities. In this paper, using the method of questionnaire, the paper analyses the development of tennis in 10 universities in Chengdu, and finds out the problems and influencing factors of tennis in Colleges in Chengdu, and puts forward in favor of tennis in Colleges, providing the theory basis for the college tennis’ sustainable development.

发展无对立,各自有特点—读《转变的中国:历史变迁与欧洲经验的局限》
Each Modernization Has Its Own Unique Way—Study on China Transformed: Historical Change and the Limits of European Experience
 [PDF]


Open Journal of Historical Studies (OJHS) , 2015, DOI: 10.12677/OJHS.2015.34007
Abstract:

《转变的中国》作为加州学派重要的学术成果,也是反对“欧洲中心论”的代表著作,为后进国家现代化路径选择问题的研究提供了几乎全新的思路,具有重大的学术价值和现实意义,本文通过对该书的研读,将反对“欧洲中心论”的观点进行了深化。

China Transformed: Historical Change and the Limits of European Experience is the representative work of the California School,and it is also a magnum opus which is against Eurocentrism. This book provides a totally new idea for the developing countries towards modernization, which has great significance both on learning and reality. This paper strengthens this argument by studying on this book.

汉语量词的窄域释义
The Narrow Scope Reading of Quantifiers in Chinese
 [PDF]

宏华
Modern Linguistics (ML) , 2014, DOI: 10.12677/ML.2014.21006
Abstract:
窄域释义现象实际是句法推演过程中时间演算带来的附加现象。核查过程中只有形式特征发生移位,词汇、语义特征呈显性滞留于原位置,A-语链中语迹的语义解释依赖方向自由式词义传递机制;在语法的解释系统中不存在效应消除过程,移位总是从低处移往高处结构统制位置;化名词词组的强/弱分类对于该问题的解释处于从属地位,结构中的位置有无标记性特征则变得至关重要。加入了标记性结构位置理论后,以约束关系为基础的释义方法指出辖域冻结现象可以从对窄域释义的分析中推导出来。
The narrow scope reading effects of quantifiers are in fact epiphenomena of derivational timing. There is no undoing process in interpretive system of grammar, given that chains are formed either by moving an element lower in the position of tree to a higher position and stay put thereby or by moving only formal features [FF] of a element, leaving the element hosting the feature of [SF] behind overtly. This stresses again that movements always take place to a c-commanding position. Narrow scope reading of quantifiers that takes place in A-chains is felicitated by means of Direction-Free Semantic Transmitting Device. In the interpretation, the classification of quantifiers is reduced to an ancillary status while the fact that whether a position is syntactically marked becomes crucial. Augmented with the theory of marked syntactic positions, this interpretive approach based on the binding relations accounts that the scope freezing phenomenon is actually a derived fact.
层次分析法在旅游地点选择中的应用
Analytic Hierarchy Process (AHP) in the Application of the Tourist Destination Choice
 [PDF]

郭艳,
Modern Management (MM) , 2014, DOI: 10.12677/MM.2014.44009
Abstract:
随着社会的发展,旅游业已成为全球经济中发展中势头最强劲和规模最大的产业之一,日益凸显它在国民经济中的重要地位。在节假日中,旅游成为人们假日休闲的首选,但是在众多的旅游景点中怎样才能选择到一个自己满意的地方成为困扰旅游者的一个不大不小的问题。本文通过应用层次分析法来对比各项指标,选择出最适合自己的景点。
With the development of society, tourism has become one of the strongest and the largest indus-tries in the global economy development, increasingly highlighting its important position in na-tional economy. In holiday, holiday leisure tourism becomes people’s first choice. But in many tourist attractions how to choose a satisfying place for tourists becomes a small problem. This paper compares the indicators by applying the analytic hierarchy process (ahp) to choose the most suitable sites for tourists.
火电厂直接空冷技术应用与分析
Application and Analysis of Direct Air Cooling Technology in Thermal Power Plants
 [PDF]

, 刘婧
Clean Coal and Energy (CCE) , 2013, DOI: 10.12677/CCE.2013.12002
Abstract:
火力发电厂直接空冷机组作为一种新的节水途径,在我国富煤贫水地区得到广泛推广。本文介绍了直接空冷技术的发展现状、原理及特点、直接空冷技术所凸显的问题,并对直接空冷技术的发展方向做出展望。直接空冷技术常见问题主要包括凝汽器表面积灰、热风再循环、凝汽器防冻度夏、风机运行和真空泄漏。文中阐述了这些问题产生的原因及预防措施,针对问题研究方法做了概括性总结
Thermal power direct air cooling unit as a new water-saving way, which has been widely promoted in coal-rich and water-poor regions in China. This article describes the direct air cooling technology development status, principles and characteristics, the problems of direct air cooling technology highlights and development direction of direct air cooling technology to make predictions. Common problems of direct air cooling technology include dust accumulation on condenser, hot air recirculation, anti-freezing estivate of condenser, fan running and vacuum leak. This paper describes the causes and preventive measures of these problems and generally summaries the research methods.

基于多元数据的货车OD获取方法研究
Research on Truck OD Acquisition Method Based on Multi-Source Data
 [PDF]

, 洪智勇
Open Journal of Transportation Technologies (OJTT) , 2014, DOI: 10.12677/OJTT.2014.32007
Abstract:
借鉴传统客运“四阶段”预测方法的货车交通预测方法较之于传统的宏观预测方法更能体现研究区域内货运量与货车交通之间的关系。但是货车OD获取难度大,国内研究几为空白,从而限制了上述方法的应用。基于此,本文结合乌鲁木齐经济技术开发区的实际情况,根据从多种口径调查得到的数据,研究分析如何获取货车OD的方法。
Compared to traditional macroeconomic forecasting methods, \"four stages\" truck traffic forecasting methods learning from traditional passenger \"four stages\" method is better reflecting the relationship within the study area between the cargo and truck traffic. However, it is difficult to get truck OD, and the domestic research is nearly blank, thus limiting the application of the above methods. Based on this, combined with the actual situation in the Urumqi Economic and Technological Development Zone, this article studies how to get the truck OD according to the survey data obtained from a variety of sources.
Page 1 /39260
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.