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Search Results: 1 - 10 of 320614 matches for " 张茂明 "
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环境在中国水库移民返迁中的推拉作用──以五大水库移民返迁为例
,义 ?
期刊检索-中国人口科学 , 2000,
Abstract: 本文回顾了新中国成立以来的水库移民返迁的基本情况,从人口迁移的“推拉”理论出发,分析了环境在中国水库移民返迁中的推拉作用。本文对认识中国水库移民返迁的原因及人口迁移“推拉”理论都有一定意义。
药物临床试验与研究
,
华西医学 , 2012,
Abstract:
地质灾害风险调查的方法与实践
,唐亚
地质通报 , 2008,
Abstract: 风险管理是一门新兴的管理学科,风险调查是风险源识别、分析、评价和风险处置的基础。在分析国内外地质灾害风险管理进展和差异的基础上,提出了中国地质灾害风险管理中术语统一的意见,论述了地质灾害风险调查的类型和精度,风险的分级,不同精度下风险调查的内容和方法,以及风险调查的技术要点。并以陕西省延安市市区和虎头峁场址风险调查为例,分别阐述了1∶10000、1∶1000比例尺精度下的风险调查和区划的过程、结果。
内生型城镇化:新型城镇化的模式选择
,
南京农业大学学报(社会科学版) , 2016,
Abstract: 以政府全面主导的城镇化思路与实践是一种外生型城镇化模式,这种模式忽视了市场主体的自主性,造成城镇化效率低下。在我国现代化转型的大背景下,这种发展模式缺乏可持续性。未来新型城镇化的发展中应选择以市场经济为主导的内生型城镇化模式。本文通过城镇化发展模式全面梳理,系统分析了我国内生型道路及其要素,提出正确处理政府与市场间的逻辑关系、强化新型城镇化包容性的发展力度、合理有效分配城市级差地租收益等一系列的内生型城镇化发展策略。
The thoughts and practice of government-dominates urbanization involve a kind of exogenous urbanization pattern which ignores the autonomy of market main body, thus causing the low efficiency of urbanization, and under the background of modernization transformation in China, this pattern lacks sustainability. For the future development of urbanization, a new type of endogenous urbanization pattern dominates by market economy should be chosen. Through comprehensively combing the urbanization development model, and analyzing the endogenous type road and the elements of China, the present paper puts forward a series of endogenous urbanization advancement strategies such as appropriate treatment of the logical relationship between government and market, strengthening the inclusive development of new urbanization, and reasonably and effectively distributing the income differential rent revenue
城乡统筹发展的框架设计与推进策略研究
The Study on Framework Design and Push Strategy of Urban-rural Integration Development

,
- , 2016,
Abstract: 城乡统筹发展作为城乡关系演化中的理想模式,对缩小城乡居民收入差距、深度革除城乡二元结构体制及妥善处理城乡居民两大社会群体间的利益关系具有重要的现实意义。文章通过对城乡统筹发展的现存问题归纳总结,对其成因进行系统性分析,依据基本内核、发展主轴、运行保障和外在依托四大层面构建设计出城乡统筹发展的运行框架;并提出深化户籍制度改革,革除二元结构体制;推进土地制度改革,高效释放土地红利及完善就业服务体系,实现城乡劳动力就业一体化等相应的城乡统筹发展推进策略。
As the ideal mode of urban-rural relationship evolution, urban-rural integration development has important practical significance on narrowing the income of urban-rural residents, integrating urban-rural dual structure system depthly and handling the two social group interests of urban-rural residents properly. Through the systematic analysis the existing problems and system causes of urban-rural integration development, the paper builds the operation design of urban-rural integration development according to the basic kernel, the main shaft of development, operation security and external reliability; the paper puts forward the push strategy of urban-rural integration development from deepen reform of the household registration system to abolish dual structure system; Promoting the reform of land system to efficient release land bonuses and perfecting employment service system to realize the integration of urban and rural labor employment.
陇南区域地质构造研究现状综述
Review of Regional Tectonics of Longnan
 [PDF]

毕银强, 唐亚, , 冯卫, 李飞
Open Journal of Nature Science (OJNS) , 2016, DOI: 10.12677/OJNS.2016.42017
Abstract:
陇南地区在研究中国大陆构造演化历史中具有重要的意义。本文主要以文献研究手段,在对国内外陇南区域地质构造比较研究的基础上,从大地构造背景、构造演化、区域构造以及现今活动性等四个方面入手,对现有的陇南区域地质构造研究成果进行了论述,并采用物探手段对稠泥河沿河地区进行了测试和研究。研究发现与礼县–罗家堡断裂呈一定交角方向上存在一条新的次级断裂——罗家堡–牡丹断裂,长约20km,总体走向NNW28?,断裂由3条相互平行或斜列的次级断裂组合而成,活动性较强。
Longnan area plays a vital role in studying the tectonic evolution of Chinese mainland. This paper mainly adopts the methods of literature research and is based on the comparative study of the geological structure of Longnan area at home and abroad, which gives an introduction and comment of regional tectonics of Longnan on the domestic argumentation concerning tectonic setting, history of the tectonic evolution, regional structure and current activity of fault. What’s more, the riverine areas of Chouni River were tested and studied by geophysical prospecting. We found LuoJiabu-Mudan fault, which is a new secondary fault of LiXian-LuoJiabao fault with a certain angle, that the length is about 20 km, the overall trend is NNW28?, the fault composed of the nearly three parallel faults, and the activity of fault is strong.
无硫复合护色剂抑制干制苹果片褐变机理研究
李新,,
北方园艺 , 2013,
Abstract: 以“红富士”苹果片为试材,研究了氯化钠(0.7%)、氯化钙(0.6%)、柠檬酸(0.7%)、EDTA-2Na(0.16%)、异抗坏血酸钠(1.3%)和无硫复合护色液(氯化钠1.0%、氯化钙0.6%、柠檬酸0.9%、EDTA-2Na0.16%、异抗坏血酸钠1.6%)6种无硫护色剂对干制苹果片抗坏血酸(维生素C)含量、还原性谷光甘肽(GSH)、总酚含量及抗坏血酸氧化酶(AAO)活力的动态变化趋势影响。结果表明无硫复合护色液对干制苹果片褐变的抑止是通过遏止果片中抗坏血酸(维生素C)、还原性谷光甘肽(GSH)、总酚含量的降低及抗坏血酸氧化酶(AAO)活力增加而实现的。经不同无硫护色剂处理后,抗坏血酸(维生素C)、还原性谷光甘肽(GSH)、总酚含量随干制时间的延长而降低,其中以非处理对照组降低最显著,复合护色剂对干制果片中上述生化指标含量下降的抑制作用最强,异维生素钠作用其次,接着是氯化钠和柠檬酸,效果较差的是氯化钙和EDTA-2Na护色液。抗坏血酸氧化酶活力则随干制时间的延长而增加。与对照相比,各处理组差异显著。?
无硫复合护色液对“红富士”苹果片干制过程中相关酶活性的影响
李新,,
北方园艺 , 2013,
Abstract: 以红富士苹果片为试材,研究了无硫复合护色液对果片干制过程中相关酶活力的影响。结果表明经无硫复合护色液浸泡处理后的果片,在各干制时间点,超氧化物歧化酶(SOD)、过氧化氢酶(CAT)酶活力远高于非处理或单一护色液处理组,而多酚氧化酶(PPO)、过氧化物酶(POD)酶活力及丙二醛(MDA)水平远低于非处理或单一护色液处理组。这表明无硫复合护色液的护色效果是通过抑制PPO、POD活力的增加和SOD、CAT活力的下降,进而降低MDA水平来实现的。
岩基中的垂直锚杆分析
彭宣,傅作新,
岩石工程学报 , 1991,
Abstract: 本文采用链杆法对岩基中的单根垂直锚杆及锚杆群进行了分析,得出了锚杆-岩基相互作用的位移影响系数,所得结果可用于求解底板-锚杆-岩基的相互作用问题。
用链杆法求解中厚度地基上基础板
,彭宣,傅作新
岩石工程学报 , 1988,
Abstract: 本文提出了完全粘合于刚性下卧层上的中厚度地基表面在矩形均布荷载作用下的沉陷计算公式。采用了有限单元法和链杆法的技巧,用有限单元法求板的位移,用链杆法求板与地基间的接触反力。由于充分利用有限元法和链杆法的优点,大大减小了求解问题的规模,而计算效率则显著提高。文中的算例还说明,半空间地基和文克勒地基都是中厚度地基的特殊情况。
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