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满足非道路印度四阶段法规的排放控制技术研究 被引量:1
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作者 农柳霞 《内燃机与配件》 2023年第12期5-7,共3页
本文基于一台电控共轨柴油机研究了柴油机采用DOC+POC+SCR技术路线满足非道路印度四阶段排放法规要求的可行性。通过台架试验研究发动机本体氮氧化物和颗粒物排放关系,并使用近后喷喷油策略来降低发动机本体颗粒物排放。然后对比不同结... 本文基于一台电控共轨柴油机研究了柴油机采用DOC+POC+SCR技术路线满足非道路印度四阶段排放法规要求的可行性。通过台架试验研究发动机本体氮氧化物和颗粒物排放关系,并使用近后喷喷油策略来降低发动机本体颗粒物排放。然后对比不同结构的POC方案对颗粒物捕集效率以确定POC方案。最终采用DOC+POC+SCR技术路线满足非道路印度四阶段污染物排放限值要求。 展开更多
关键词 道路印度 POC捕集效率 近后喷 PM
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农地应“流转集中”到谁手里?
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作者 潘维 《中国集体经济》 2009年第2S期8-10,共3页
鼓励农村土地流转是为了鼓励集中。我国农村的耕地、房基地、山林地,该不该流转集中?应该。8亿农村人口中的2亿人脱离耕地流动到了城市,他们留下的耕地和房基地权属当然应该适度集中。然而,农地流转集中给"资本"还是农民?土... 鼓励农村土地流转是为了鼓励集中。我国农村的耕地、房基地、山林地,该不该流转集中?应该。8亿农村人口中的2亿人脱离耕地流动到了城市,他们留下的耕地和房基地权属当然应该适度集中。然而,农地流转集中给"资本"还是农民?土地应当流转集中给农村集体。 展开更多
关键词 土地流转 农地流转 亿人 农地集体所有 印度道路 土地私有 国家征用 山林地 土地使用 生存安全
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Epidemiology of patients admitted to a major trauma centre in northern India 被引量:2
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作者 Devarshi Rastogi Sanjay Meena +1 位作者 Vineet Sharma Girish Kumar Singh 《Chinese Journal of Traumatology》 CAS CSCD 2014年第2期103-107,共5页
Objective: Trauma in India is an increasingly significant problem, particularly in light of rapid development and increasing motorization. Social changes are resulting in alterations in the epidemiology of trauma. Th... Objective: Trauma in India is an increasingly significant problem, particularly in light of rapid development and increasing motorization. Social changes are resulting in alterations in the epidemiology of trauma. The aim of the study was to assess the various epidemiological parameters that influence the cause of injury in the patients admitted to a major trauma centre in northem India. Methods: An observational study of 748 patients chosen by random assortment was carried out over a peri- od of 1 year (August 2008 to July 2009). Age, sex, injury type and pattern were noted. Injury mode of upper and lower limbs was also noted. Results: Injuries occur predominately in the age group of 15-30 years. Males incurred more injury with male to female ratio of 6:1. The most vulnerable group was motorcycle users. Among the injured, farmers were the most commonly involved. Blunt injuries (94.92%) were much more common than penetrating injuries. Among patients with head injury, two wheelers related accidents were the most common (40.3%). Most spinal cord injuries were caused by falls from height (51.09%). Most lower limb fractures were simple type. Compound fractures of the lower limb were more common than up- per limb fractures. Conclusion: Strict enforcement of traffic rules, combined with improved infrastructure and behavior change can decrease the burden of road traffic accidents in India and other developing countries. This study could assist in raising the profile of road traffic accidents as a public health problem which needs to be addressed as a preventable cause of mortality and morbidity, and plan- ning appropriate interventions for this major challenge. Preventive strategies should be made on the basis of these epidemiological trends. 展开更多
关键词 Wounds and injuries EPIDEMIOLOGY Accidents traffic INDIA
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Spatio-temporal evolution of population and urbanization in the countries along the Belt and Road 1950–2050 被引量:19
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作者 刘海猛 方创琳 +3 位作者 苗毅 马海涛 张蔷 周强 《Journal of Geographical Sciences》 SCIE CSCD 2018年第7期919-936,共18页
This paper uses data for the period 1950-2050 compiled by the United Nations Population Division together with methods including spatial autocorrelation analysis, hie- rarchical cluster analysis and the standard devia... This paper uses data for the period 1950-2050 compiled by the United Nations Population Division together with methods including spatial autocorrelation analysis, hie- rarchical cluster analysis and the standard deviational ellipse, to analyze the spatio-temporal evolution of population and urbanization in the 75 countries located along the routes of the Silk Road Economic Belt and the 21st-century Maritime Silk Road, to identify future popula- tion growth and urbanization hotspots. The results reveal the following: First, in 2015, the majority of Belt and Road countries in Europe, South Asia and Southeast Asia had high population densities, whereas most countries in Central Asia, North Africa and West Asia, as well as Russia and Mongolia, had low population densities; the majority of countries in South Asia, Southeast Asia, Central Asia, West Asia and North Africa had rapid population growth, whereas many countries in Europe had negative population growth; and five Belt and Road countries are in the initial stage of urbanization, 44 countries are in the acceleration stage of urbanization, and 26 are in the terminal stage of urbanization. Second, in the century from 1950 to 2050, the mean center of the study area's population is consistently located in the border region between India and China. Prior to 2000, the trajectory of the mean center was from northwest to southeast, but from 2000 it is on a southward trajectory, as the population of the study area becomes more concentrated. Future population growth hotspots are predicted to be in South Asia, West Asia and Southeast Asia, and hotspot countries for the period 2015-2030 include India, China, Pakistan and Indonesia, though China will move into nega- tive population growth after 2030. Third, the overall urban population of Belt and Road coun- tries increased from 22% in 1950 to 49% in 2015, and it is expected to gradually catch up with the world average, reaching 64% in 2050. The different levels of urbanization in different countries display significant spatial dependency, and in the hundred-year period under con-sideration, this dependency increases before eventually weakening. Fourth, between 2015 and 2030, urban population hotspots will include Thailand, China, Laos and Albania, while Kuwait, Cyprus, Qatar and Estonia will be urban "coldspots." Fifth, there were 293 cities with populations over 1 million located along the Belt and Road in 2015, but that number Js ex- pected to increase to 377 by 2030. Of those, 43 will be in China, with many of the others located in India, Indonesia and the eastern Mediterranean. 展开更多
关键词 Belt and Road POPULATION URBANIZATION population migration spatio-temporal evolution China
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The Road From Talk to Action
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作者 Shen Dingli 《Beijing Review》 2016年第50期18-19,共2页
Beijing and Tokyo must reconcile their differences The rift between China and Japan shows signs of healing,as evidenced by the brief meeting between Chinese President Xi Jinping and Japanese Prime Minister Shinzo Abe ... Beijing and Tokyo must reconcile their differences The rift between China and Japan shows signs of healing,as evidenced by the brief meeting between Chinese President Xi Jinping and Japanese Prime Minister Shinzo Abe on the sidelines of the 2016 APEC forum in Lima,Peru,on November 20. This was their fourth face-to- face encounter, following meetings at the Beijing APEC forum in China in 2014. the Bandung anniversary in Indonesia in 201 S. and the Hangzhou G20 Summit in China this September. 展开更多
关键词 Minister Japanese brief Tokyo administration healing freedom agreed committed pragmatic
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