检索结果-南通市图书馆

Sustainable Tourism Development of Landscape Heritage in a Rural Community: A Case Study of Azheke Village at China Hani Rice Terraces

引用

Built Heritage 2017年第4期1卷 37-51页

作者： Lin Zhang William stewart College of Architecture and Urban Planning Tongji UniversityShanghaiChina College of Applied Health Sciences University of IllinoisUrbana-ChampaignUSA

According to the World Heritage Convention,rural landscapes are evolving cultural landscapes and their heritage and management is a major international *** proposal of‘UNESCO World Heritage Sustainable Tourism(WH+ST)’has enlightened different arguments about protection and utilisation of the value of rural landscape *** Outstanding Universal Value(OUV)of rural landscapes results from the interaction of nature and *** community residents are critical for the sustainable tourism development of rural landscape *** would lose their authenticity and integrity without participation of community *** the same time tourism is promoting the economic development of communities,tourism will affect its natural environment and social culture in varying *** of such impacts,rural landscapes are subject to the risk of becoming overly *** this sense,the discussion will focus on how to achieve balance among the various forces stemming from protection of the OUV of rural heritage,economic development and sustainable community-based *** paper is based on field research at the World Heritage Hani Rice Terraces at Azheke Village(Yunnan Province,China).At this site,the agricultural landscape,architectural design,rural culture,and social traditions have confronted challenges because of the rapid development of the tourism industry soon after designation as a World Heritage Site in *** planning was carried out in respect of three key problems:(1)How to motivate community residents’sense of recognition and honour of the heritage value?(2)How to create the manner and approach for the community residents to participate in rural sustainable tourism?and(3)How to improve the social residents’interests in the course of developing rural heritage tourism?Specific planning measures and suggestions have also been proposed in hopes that community residents take the initiative to protect,utilise and undertake th

关键词： rural landscape world heritage sustainable tourism community participation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Conservation management decreases surface runoff and soil erosion

引用

International Soil and Water Conservation Research 2022年第2期10卷 188-196页

作者： Xuan Du Jinshi Jian Can Du Ryan D.stewart Department of Hydraulic Engineering Yangling Vocational&Technical CollegeYang LingShaanxiChina State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F UniversityYangling712100China Pacific Northwest National Laboratory-University of Maryland Joint Global Change Research Institute 5825 University Research CourtSuite3500College ParkMDUSA Department of Bioengineering Yangling Vocational&Technical CollegeYang LingShaanxiChina School of Plant and Environmental Sciences Virginia

Conservation management practices e including agroforestry,cover cropping,no-till,reduced tillage,and residue return e have been applied for decades to control surface runoff and soil erosion,yet results have not been integrated and evaluated across cropping *** this study we collected data comparing agricultural production with and without conservation management *** used a bootstrap resampling analysis to explore interactions between practice type,soil texture,surface runoff,and soil *** then used a correlation analysis to relate changes in surface runoff and soil erosion to 13 other soil health and agronomic indicators,including soil organic carbon,soil aggregation,infil-tration,porosity,subsurface leaching,and cash crop *** all conservation management practices,surface runoff and erosion had respective mean decreases of 67%and 80%compared with *** of cover cropping provided the largest decreases in erosion and surface runoff,thus emphasizing the importance of maintaining continuous vegetative cover on ***-and medium-textured soils had greater decreases in both erosion and runoff than fine-textured *** in surface runoff and soil erosion under conservation management were highly correlated with soil organic carbon,aggregation,porosity,infiltration,leaching,and yield,showing that conservation practices help drive important in-teractions between these different facets of soil *** study offers the first large-scale comparison of how different conservation agriculture practices reduce surface runoff and soil erosion,and at the same time provides new insight into how these interactions influence the improvement or loss of soil health。

关键词： Conservation management Soil erosion Runoff Meta-analysis Soil he

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fast and accurate earthquake location within complex medium using a hybrid global-local inversion approach

引用

Earthquake Science 2009年第5期22卷 435-448页

作者： Chaoying Bai Rui Zhao stewart Greenhalgh Department of Geophysics College of Geology Engineering and Geomatics Chang'an University Xi'an 710054 China Key Laboratory of Western China's Mineral Resources and Geology Engineering Ministry of Education Xi' an 710054 China Institute of Geophysics ETH Zürich CH 8092 Switzerland Department of Physics University of Adelaide Adelaide SA 5005 Australia

A novel hybrid approach for earthquake location is proposed which uses a combined coarse global search and fine local inversion with a minimum search routine, plus an examination of the root mean squares （RMS） error distribution. The method exploits the advantages of network ray tracing and robust formulation of the Frrchet derivatives to simultaneously update all possible initial source parameters around most local minima （including the global minimum） in the solution space, and finally to determine the likely global solution. Several synthetic examples involving a 3-D complex velocity model and a challenging source-receiver layout are used to demonstrate the capability of the newly-developed method. This new global-local hybrid solution technique not only incorporates the significant benefits of our recently published hypocenter determination procedure for multiple earthquake parameters, but also offers the attractive features of global optimal searching in the RMS travel time error distribution. Unlike the traditional global search method, for example, the Monte Carlo approach, where millions of tests have to be done to fmd the final global solution, the new method only conducts a matrix inversion type local search but does it multiple times simultaneously throughout the model volume to seek a global solution. The search is aided by inspection of the RMS error distribution. Benchmark tests against two popular approaches, the direct grid search method and the oct-tree important sampling method, indicate that the hybrid global-local inversion yields comparable location accuracy and is not sensitive to modest level of noise data, but more importantly it offers two-order of magnitude speed-up in computational effort. Such an improvement, combined with high accuracy, make it a promising hypocenter determination scheme in earthquake early warning, tsunami early warning, rapid hazard assessment and emergency response after strong earthquake occurrence.

关键词： complex velocity model SPM ray tracing matrix inversion earthquake location a global solution RMS error inspection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pancreatic paraganglioma diagnosed by endoscopic ultrasoundguided fine needle aspiration: A case report and review of literature

引用

World Journal of Gastroenterology 2021年第37期27卷 6322-6331页

作者： Gandhi Lanke John M stewart Jeffrey H Lee Department of Gastroenterology Hepatology and NutritionMD Anderson Cancer CenterLubbockTX 79407United States Pathology-lab Medicine Division MD Anderson Cancer CenterHoustonTX 77030United States Department of Gastroenterology Hepatology and NutritionMD Anderson Cancer CenterHoustonTX 77030United States

BACKGROUND Pancreatic paragangliomas(PPGL)are rare benign neuroendocrine neoplasms but malignancy can *** are often misdiagnosed as pancreatic neuroendocrine tumor or pancreatic *** SUMMARY We reviewed 47 case reports of PPGL published in PubMed to *** patients(15/47)with PPGL underwent endoscopic ultrasound-guided fine needle aspiration(EUS-FNA).Only six(6/15)were correctly diagnosed as *** patients with PPGL underwent surgical resection except three(one patient surgery was aborted because of hypertensive crisis,two patients had metastasis or involvement of major vessels).Our patient remained on close surveillance as she was *** Accurate preoperative diagnosis of PPGL can be safely achieved by EUS-FNA with *** team approach should be considered to bring the optimal results in the management of PPGL.

关键词： Pancreatic paraganglioma Endoscopic ultrasound-guided fine needle aspiration Meta-iodobenzylguanidine scan Metanephrines GATA-3 Immunohistochemistry Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Industrial and Agricultural Effects on Water Environment and Its Optimization in Heavily Polluted Area in Taihu Lake Basin, China

引用

Chinese Geographical Science 2013年第2期23卷 203-215页

作者： ZHAO Haixia YOU Bensheng DUAN Xuejun stewart BECKY JIANG Xiaowei State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of Sciences White Clay Editorial Newark College of Territorial Resources and Tourism Anhui Normal University

The deteriorating water quality in the Taihu Lake Basin has attracted widespread attention for many years, and is correlated with a sharp increase in the quantity of pollutant discharge such as agricultural fertilizers and industrial wastewater. In this study, several factors were selected for evaluating and regionalizing the water environmental capacity by ArcG1S spatial analysis, including geomor- phologic characteristics, water quality goals, water body accessibility, water-dilution channels, and current water quality. Then, the spa- tial optimization of agriculture and industry was adjusted through overlay analysis, based on the balance between industrial space and water environmental capacity. The results show that the water environmental capacity gradually decreases from the west to the east, in contrast, the pollution caused by industrial and agricultural clustering is distributes along Taihu Lake, Gehu Lake and urban districts. The analysis of the agricultural space focuses on optimizing key protected areas of the Taihu Lake Basin, and the shores of Gehu Lake, optimally adjusting the second protected areas of the Taihu Lake Basin, and generally adjusting the urban areas of Changzhou and Wuxi cities. The analysis of industrial space focuses on optimizing the downtowns of Changzhou and Wuxi cities, optimally adjusting key protected areas and second protected areas of the Taihu Lake Basin, and generally adjusting the south and southwest of Gehu Lake. Lastly, some schemes of industrial and agricultural layouts and policies for the direction of industrial and agricultural development were proposed, reflecting a correlation between industry and agriculture and the water environment.

关键词： water environmental capacity industrial and agricultural pollution spatial optimization heavily polluted area

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Applicability of five models to simulate water infiltration into soil with added biochar

引用

Journal of Arid Land 2017年第5期9卷 701-711页

作者： WANG Tongtong Catherine E stewart MA Jiangbo ZHENG Jiyong ZHANG Xingchang State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling 712100 China College of Natural Resources and Environment Northwest A&F University Yangling 712100 China Soil-Plant-Nutrient Research Unit United States Department of Agriculture-Agricultural Research Service Fort Collins CO 80526-8119 USA

As a soil amendment, biochar can reduce soil bulk density, increase soil porosity, and alter soil aggregates and thus affect the infiltration. Researchers have proposed and revised several theoretical models to describe the process of soil infiltration. Although these models have been successfully used to evaluate the soil infiltration in different scenarios in agricultural fields, little effort has been devoted to assess their performances in arid and semi-arid soils after the addition of biochar. A laboratory experiment was performed to study the infiltration characteristics of two typical Loess Plateau soils at three particle sizes（2–1, 1–0.25, and 〈0.25 mm） and five biochar application amounts（0, 10, 50, 100, and 150 g/kg）. The performance of five models（i.e., the Philip model, Kostiakov model, Mezencev model, USDA-NRCS model, and Horton model） in simulating the infiltration process was then evaluated based on the adjusted coefficient of determination and a reduced Chi-Square test. Results indicated that the Horton model best simulated the water-infiltration process in an aeolian sandy soil with added biochar. However, the Mezencev model best simulated the infiltration process in a loamy clay soil（Eum-Orthic Anthrosol）. The three-parameter model, i.e., Mezencev and Horton models can better describe the relationship between cumulative infiltration and infiltration time. In conclusion, biochar reduced the soil infiltration capacity of the aeolian sandy soil and increased that of the Eum-Orthic Anthrosol.

关键词： infiltration models biochar Horton model Mezencev model Loess Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Homopteran Vector Biomarkers for Efficient Circulative Plant Virus Transmission are Conserved in Multiple Aphid Species and the Whitefly Bemisia tabaci

引用

Journal of Integrative Agriculture 2012年第2期11卷 249-262页

作者： Michelle Cilia Michael Bereman Tara Fish Michael J MacCoss stewart Gray USDA-ARS Robert W. Holley Center for Agriculture and Health Tower Road Ithaca New York 14853 USA Department of Plant Pathology and Plant-Microbe Biology Cornell University Ithaca New York 14853 USA Department of Genome Sciences University of Washington Seattle Washington 98195-5065 USA

Plant viruses in the families Luteoviridae and Geminiviridae are phloem restricted and are transmitted in a persistent,circulative manner by homopteran *** fluorescence 2-D difference gel electrophoresis to compare the proteomes of F2 genotypes of Schizaphis graminum segregating for virus transmission ability,we recently discovered a panel of protein biomarkers that predict vector *** we used aphid and whitefly nucleotide and expressed sequence tag database mining to test whether these biomarkers are conserved in other homopteran *** gene homologs that shared a high degree of predicted amino acid identity were discovered in two other aphid species and in the whitefly Bemisia *** reaction monitoring mass spectrometry was used to validate the expression of these biomarkers proteins in multiple aphid vector *** conservation of these proteins in multiple insect taxa that transmit plant viruses along the circulative transmission pathway creates the opportunity to use these biomarkers to rapidly identify insect populations that are the most efficient vectors and allow them to be targeted for control prior to the spread of virus within a crop.

关键词： aphid whitefly Schizaphis graminum Bemisia tabaci Acyrthosiphon pisum Toxoptera citricida Myzuspersicae proteomics biomarker circulative transmission begomovirus luteovirus geminivirus leaflaopper,selected reaction monitoring SRM mass spectrometry targeted proteomics Skyline

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

作者： (英)Sue stewart

学校读者我要写书评

暂无评论

The cytokine milieu in the interplay of pathogenic Th1/ Th17 cells and regulatory T cells in autoimmune disease

引用

Cellular & Molecular Immunology 2010年第3期7卷 182-189页

作者： stewart Leung Xuebin Liu Lei Fang Xi Chen Taylor Guo Jingwu Zhang Department of Neuroimmunology GlaxoSmithKline Research and Development CenterShanghaiChina

The propagation and regulation of an immune response is driven by a network of effector and regulatory T(Treg)*** interplay of effector T and Treg cells determines the direction of the immune response towards inflammation or its resolution in an autoimmune disease *** autoimmune diseases,this interplay shifts the balance in favor of the development of autoreactive effector T cells,resulting in inflammatory *** objective of an effective therapeutic approach for autoimmune disease is to restore this *** this review,we describe the characteristics and development of pathogenic T helper 1(Th1)and Th17 cells and the beneficial Treg cells in autoimmune diseases and the crucial roles of the cytokine milieu in influencing the balance of these T-cell *** the importance of cytokines,we discuss current immunotherapeutic strategies using cytokine or cytokine receptor antibodies for the treatment of autoimmune diseases.

关键词： Autoimmune disease Cytokine Regulatory T cell T helper 17 cell

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

3-D multi-parameter type traveltime tomography in a spherical coordinate frame: comparison of double and triple class simultaneous inversions

引用

Earthquake Science 2018年第2期31卷 62-74页

作者： Chaoying Bai Jiayu Sun Xingwang Li stewart Greenhalgh Department of Geophysics College of Geology Engineering and Geomatics Chang'an University Institute of Computational Geophysics Chang'an University Department of Geosciences King Fahd University of Petroleum and Minerals

It is now common practice to perform simultaneous traveltime inversion for the velocity field and the reflector geometry in reflection/refraction tomography, or the velocity field and the hypocenter locations in regional earthquake tomography, but seldom are all three classes of model parameters updated simultaneously. This is mainly due to the trade-off between the different types of model parameters and the lack of different seismic phases to constrain the model parameters. Using a spherical-coordinate ray tracing algorithm for first and later（primary reflected） arrival tracing algorithm in combination with a popular linearized inversion solver, it is possible to simultaneously recover the three classes of model parameters in regional or global tomographic studies. In this paper we incorporate the multistage irregular shortest-path ray tracing algorithm（in a spherical coordinate system） with a subspace inversion solver to formulate a simultaneous inversion algorithm for triple model parameters updating using direct and later arrival time *** tests for two sets of data（noise free and added noise） indicate that the new triple-class parameter inversion algorithm is capable of obtaining nearly the same results as the double-class parameter inversion scheme. Furthermore,the proposed multi-parameter type inversion method is not sensitive to a modest level of picking error in the traveltime data, and also performs well with a relatively large uncertainty in earthquake hypocentral locations. This shows it to be a feasible and promising approach in regional or global tomographic applications.

关键词： simultaneous triple model parameten inversion reflector geometry hypocenter location subspace inversion multistage irregular shortest-path ray tracing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：