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Search Results: 1 - 10 of 13699 matches for " Longyi Xue "
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“Enterprise + Peasant Household” Pattern Explored about Land Transfer in the Distant Rural Areas
—An Analysis Based on a Survey of Beiyuan in Xiangning Country, Shanxi Province
 [PDF]

Huiju Du, Longyi Xue
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.49017
Abstract: Land transfer is the important link to realize the agricultural modernization, new rural construction and urban-rural integration. This article analyzes the influence on peasant’ income caused by the land transfer pattern of “enterprise + peasant household” which is used by the leading enterprise—Rongzi chateau in Beiyuan, Xiangning, Shanxi province by means of questionnaire and interview. It finds that a large number of peasants come back to their rural areas and the contribution rate of per capita net income of crops planting accounts for as high as 71.52% of per capita net total income after they have joined in this land transfer. This is of great significance to balance urban and rural development and to construct a new socialist countryside. The paper will discover the land transfer patterns that are suitable for the remote rural areas in China, which will be combined with some typical land transfer patterns in developed areas in China and based on the respects for peasants’ will and rights, aimed at making contribution to the new socialist countryside construction and the perfection of Chinese Rural Land System.
Current Research and Prospect of Dendrobenthamia hongkongensis in China  [PDF]
Longyi Yuan, Peng Lang, Xinghua Xue
Natural Resources (NR) , 2013, DOI: 10.4236/nr.2013.46053
Abstract:

Dendrobenthamia hongkongensis is an excellent ornamental tree species, which has a wide range in germplasm resources distribution and rich varieties within species in China and has also a great development prospect of the new superior species for city landscape. So it is necessary for us to do much research for the development and utilization of this species. According to the latest existing research data of D. hongkongensis, the research achievements of D. hongkongensis in Germplasm resource distribution, bio-ecological habits, breeding and cultivation techniques and so on have been analyzed and summed up. On the other hand, its Ornamental value has been utilized in the modern landscape. At the same time, Edible and Medicinal value of D. hongkongensis has been discussed in the paper as well as Material value of D. hongkongensis. In addition, the future aspects of physiological and ecological research, domestication and breeding new varieties, resource protection and landscape application of D.

Research on Adaptability of Farmers after the Loess Plateau Ecological Immigration
—A Case Study in Checheng Village, Ji County
 [PDF]

Qiaoyun Feng, Longyi Xue, Yaolin Wang
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.312007
Abstract: In ecological migrants, farmer’s adaptability are the main manifestations of the effect and quality of the migration of migrants. This paper, through questionnaire surveys to migrants in Checheng Village, Ji County, Shanxi Province, studies on their adaptability to economic production, lifestyle, and social relationship, explores the Loess Plateau ecological adaptability of immigrants, and finally makes recommendations for the villagers aiming at problems appearing in the relocation process.
Cause Analysis to Farmers’ No Removal from Immigrant of Voluntary Poverty Alleviation of in Shanxi Province and Policy Recommendations  [PDF]
Yanfang Xu, Longyi Xue, Yaolin Wang
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.44021
Abstract: In the implementation of the voluntary poverty alleviation migration policy, some rich villagers have moved but some still live in the original place. This phenomenon is a universal social problem, and those farmers still maintain the original living standards and even lower than those be-fore the implementation of voluntary poverty alleviation immigration policy. The article takes a poverty-stricken country in Shanxi Province as a case to find out the reasons for the left-behind farmers, to explore the accurate poverty alleviation in the voluntary poverty alleviation in Shanxi Province, and to put forward the corresponding suggestions.
The Poverty Alleviation and Immigration Practice Model Effect Research in Liulin  [PDF]
Yumei Liu, Longyi Xue, Yaolin Wang
Chinese Studies (ChnStd) , 2016, DOI: 10.4236/chnstd.2016.54012
Abstract: By the way of field investigation and statistical analysis, I have carried on investigation to Liulin, migrant village and I have learnt something about migration forms, mainly interaction patterns of villages and towns aggregation model. This article mainly analyzes the work and the necessity of immigration for poverty alleviation and the actual effect of the two modes in Lilulin. Moreover, I put forward some suggestions to model improvement and hope that I can do some useful things to poverty reduction in Liulin. At the same time, it can provide favorable help for building a harmonious society.
The Mineralogy and Possible Sources of Spring Dust Particles over Beijing
SHAO Longyi,LI Weijun,XIAO Zhenghui,SUN Zhenquan,
SHAO Longyi
,LI Weijun,XIAO Zhenghui,SUN Zhenquan

大气科学进展 , 2008,
Abstract: A severe Asian Dust Storm (ADS) event occurred on 16-17 April 2006 in northern China. The mineral compositions of dust samples were analyzed using X-ray diffraction (XRD). The results indicated that dust particles of the "17 April 2006" dust storm were dominated by quartz (37.4%) and clay (32.9%), followed by plagioclase (13.7%), with small amounts of calcite, K-feldspar, dolomite, hornblende and gypsum (all less than 10%). The clay fractions with diameter less than 2 fim were separated from the dust storm particles by centrifuging and were further analyzed by XRD. The results revealed that the clay species were mainly illite/smectite mixed layers (I/S) (49%) and illite (34%), with small amount of kaolinite (8%) and chlorite (9%). In order to evaluate the feasibility of using the mineralogy to trace the sources of dust particles, the XRD results of the "17 April 2006" dustfall particles were compared with the dust particles over past years. The results confirmed that the finer dust particles represented by the ADS PMio displayed a smaller quartz/clay ratio than the dustfall particles. The dust storm particles, either from the ADS PMio or from the "17 April 2006" dustfall, showed a lower level of dolomite contents and lower dolomite/clay ratios compared with the non-dust storm dustfall particles. This implies that dolomite could be used to distinguish between the dust contributions from local and non-local sources. Similar trends were found for the gypsum and the gypsum/clay ratio. Moreover, the two dustfall samples had a lower level of illite/smectite mixed layers and a higher level of illite than airborne PMio, implying that the dustfall particles tend to be enriched with illite in its clay fraction.
Size, composition, and mixing state of individual aerosol particles in a South China coastal city
Size,composition,and mixing state of individual aerosol particles in a South China coastal city

Weijun Li,Longyi Shao,Zhishi Wang,Rongrong Shen,Shusheng Yang,Uwa Tang,
Weijun Li
,Longyi Shao,Zhishi Wang,Rongrong Shen,Shusheng Yang,Uwa Tang

环境科学学报(英文版) , 2010,
Abstract: Aerosol samples were collected in summer in Macao, a coastal city of the Pearl River Delta Region in China. Morphology, size, elemental composition, and mixing state of individual aerosol particles were determined by scanning electron microscopy coupled energy dispersive X-ray (SEM/EDX) and transmission electron microscopy (TEM). Based on the morphologies of 5711 aerosol particles, they consist of soot (32%), mineral (17%), secondary (22%), and unknown fine particles (29%). The sizes of these particles were mostly distributed between 0.1 and 0.4 m. Compositions of 202 mineral particles were obtained by SEM/EDX. Mineral particles were mainly classified into three types: Si-rich, Ca-rich, and Na-rich. The compositions of typical mineral particles can indicate their sources in sampling location. For example, mineral particles, collected along the main street, were associated with trace amounts of heavy metals, such as Zn, Ti, Mn, Ba, Pb, and As. TEM observations indicate that most Na-rich particles were aged sea salt particles (e.g., Na2SO4 and NaNO3) which formed through heterogeneous chemical reactions between sea salt and acidic gases. Additionally, aging time of soot was short in Macao due to high humidity, high temperature, and high levels of sunlight in Macao. Most of soot and fine mineral dust particles were internally mixed with secondary particles.
Oxidative stress on plasmid DNA induced by inhalable particles in the urban atmosphere
Zongbo Shi,Longyi Shao,T. P. Jones,A. G. Whittaker,R. J. Richards,Pengfei Zhang
Chinese Science Bulletin , 2004, DOI: 10.1007/BF03184267
Abstract: Plasmid DNA assay is a newly-developedin vitro method to investigate bioreactivity of particles. In this paper, this method was used to study the bioreactivity of PM10 (particulate matter with aerodynamic diameter of less than 10 μm) and PM2.5 (particulate matter with aerodynamic diameter of less than 2.5 μm). Samples and dust storm particles were collected in 2001 in an urban area, a satellite city and a clean air area in Beijing. A big difference was found for oxidative DNA stress induced by different particulate matter (PM) samples, with the TM50 (particle mass causing 50% damage to DNA) values varying by a factor over 10. This was closely dependent on the sizes of particles as well as the variation in relative proportion of mineral matter. PM2.5 samples generally impose larger oxidative stress on plasmid DNA than PM10 samples. Airborne particles collected during dust storm episodes, usually with a higher proportion of mineral matter, have a much lower oxidative capacity than those collected during non-dust storm episodes. PM samples and their water-soluble fractions usually have similar bioreactivities, demonstrating that oxidative capacity of Beijing airborne particles is mainly sourced from their water-soluble fractions.
Experimental study and practice on a cycled still settlement process
周期循环静止沉淀工艺实验研究与实践

Liu Yanfei,Shao Longyi,
刘彦飞
,邵龙义

环境工程学报 , 2007,
Abstract: 为了提高给水处理中常规沉淀池的沉淀效率,采用多个沉淀池代替常规的单一沉淀池进行沉降实验,多池依次进水、依次静止沉淀,然后出水,周期循环,并在实验的基础上提出了“周期循环静止沉淀”这种给水处理新工艺。实验结果和实践表明,周期循环静止沉淀工艺与常规连续进、出水的单一沉淀池工艺相比,其沉淀效率明显提高,其出水水质显著改善。
Microscopic Characteristics and Size Distribution of Summer PM10 in the Air of a Northwestern Urban Site and a Clean Air Site in Beijing
北京西北城区与清洁对照点夏季大气PM10的微观特征及粒度分布

Shao Longyi,Shi Zongbo,
邵龙义
,时宗波

环境科学 , 2003,
Abstract: Microscopic characteristics and size distribution of individual particles in the summer (2001) PM10 collected at a northwestern urban site and a clean air site in Beijing have been investigated using high resolution Field Emission Scanning Electron Microscopy (FESEM) and image analysis technologies. The soot aggregates were observed at both sampling sites, showing a characteristic regional pollution. The irregular mineral particles existed commonly at the urban site but were rarely seen at the clean air site. The elongated gypsums and biological particles were observed only at the clean air site. PM10 displayed a biomodal number-size distribution, with a higher peak in 0.2-0.5 micron range and a lower peak in 1-2.5 microns range. In contrast, volume-size distribution of PM10 exhibited a unimodal pattern with the peak in 1-2.5 microns range. The coarse particles, mainly minerals, had a considerable contribution to the PM10 mass, although they were insignificant in number. In PM2.5, however, the soot aggregates were dominant both in number and mass.
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