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Risk assessment of mountain tourism on the Western Sichuan Plateau,China

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Journal of Mountain Science 2023年第11期20卷 3360-3375页

作者： ZHANG Yu-Qing WANG Yue-lin li Hong li xue-ming School of Geography Liaoning Normal UniversityDalian 116029China Centre for Marine Economy and Sustainable Development Research Liaoning Normal UniversityDalian 116029China

As an important site for tourism activities,mountainous areas may generate greater tourism risks than plain areas due to potential natural disasters,social issues,scenic area management,and tourist *** Sichuan Plateau is mostly mountainous area and tourism is its pillar industry,Therefore,the assessment of the tourism risks on the Western Sichuan Plateau is of academic value and practical *** this study,we use statistical and remote sensing data,fishbone diagram,and the entropy weighting method to construct a tourism risk evaluation model and classify risks into different levels,and we also use a geographic information system(GIS)for spatial mapping to quantify and spatialize the *** objectives are 1)to identify the risk sources in the Western Sichuan Plateau and analyze their causal mechanisms,precisely reveal the distribution of tourism risks in the study area;2)improve the precision of tourism risk evaluation in scenic areas and analyze the causes and spatial distribution patterns of tourism risks and propose targeted management *** study found that the evaluation results of the four elements of hazard,exposure,vulnerability,and disaster prevention and mitigation capacity on the Western Sichuan Plateau showed significant spatial variability,depending on the natural conditions and the quantity difference of tourism resources in different *** addition,the tourism risk is low in most areas of the Western Sichuan Plateau,and disaster prevention and mitigation capacity is higher in areas with high tourism risk where attractions are densely populated and tourism is *** study can provide a reference for future analyses of tourism risks in mountainous tourist areas such as in China and worldwide.

关键词： Tourism risks Risk assessment Risk sources Fishbone diagram Western Sichuan Plateau

Panax notoginseng saponins prevent colitis-associated colorectal cancer via inhibition IDO1 mediated immune regulation

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Chinese Journal of Natural Medicines 2022年第4期20卷 258-269页

作者： li xue-ming YUAN Ding-Yi liU Ya-Hui ZHU Lei QIN Hong-Kun YANG Yu-Bing li Yan YAN Fang WANG Ya-Jing Department of physiology School of Basic Medicine and Clinical PharmacyChina Pharmaceutical UniversityNanjing 210009China Department of Pharmaceutical Analysis School of pharmacologyChina Pharmaceutical UniversityNanjing 210009China Department of Chronic Communicable Disease Jiangsu Provincial Center for Disease Prevention and ControlNanjing 210009China

Colorectal cancer(CRC)is the third most lethal cancer and leading cause of cancer mortality worldwide.A key driver of CRC development is colon inflammatory responses especially in patients with inflammatory bowl disease(IBD).It has been proved that Panax notoginseng saponins(PNS)have anti-inflammatory,anti-oxidant and anti-tumor *** chemopreventive and immunomodulatory functions of PNS on colitis-associated colorectal cancer(CAC)have not been *** present study was designed to study the potential protective effects of PNS on AOM/DSS-induced CAC mice to explore the possible mechanism of PNS against *** study showed that PNS significantly alleviated colitis severity and prevented the occurrence of *** assays revealed that PNS relieved immunosuppression of Treg cells in the CAC microenvironment by inhibiting the expression of IDO 1 mediated directly by signal transducer and activator of transcription 1(STAT1)rather than phosphorylated ***,Rhl,one of the PNS metabolites,exhibited the best inhibitory effect on IDO1 enzyme *** study showed that PNS exerted significant chemopreventive function and immunomodulatory properties on *** could reduce macrophages accumulation and Treg cells differentiation to reshape the immune microenvironment of *** findings provided a promising approach for CAC intervention.

关键词： Panax notoginseng saponins Colitis-associated colorectal cancer Chemoprevention Treg cells IDO1

Solitary fibrous tumors in abdomen and pelvis:Imaging characteristics and radiologic-pathologic correlation

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World Journal of Gastroenterology 2014年第17期20卷 5066-5073页

作者： xue-ming li Jing Reng Peng Zhou Ying Cao Zhu-Zhong Cheng Yan Xiao Guo-Hui Xu Department of Radiology Sichuan Cancer Hospital

AIM: To describe the imaging features of solitary fibrous tumors (SFTs) in the abdomen and pelvis, and the clinical and pathologic correlations.

关键词： Abdominal imaging Solitary fibrous tumors Computed tomography Magnetic resonance imaging

Seismic performance testing of reinforcement concrete frames strengthened with Y-eccentrically brace

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Journal of Chongqing University 2012年第4期11卷 151-160页

作者：王大鹏 YU An-lin xue li-ming Jiangsu Key Laboratory of Structural Engineering School of Civil Engineering Suzhou University of Science and Technology

Two single-storey single-span reinforcement concrete （RC） frame structures strengthened with Y-eccentrically brace were designed and manufactured to be 1/3 scale. The pseudo-dynamic testing method was used to study the mechanical characteristics and the seismic performance under E1-Centro earthquake action with different peak acceleration adjusted by China＇s Code for Seismic Design of Buildings. The test results indicate that RC frame structures strengthened with Y- eccentrically steel brace present perfect seismic performance under strong earthquake action owing to the good ductility, strong bearing capability and fine energy absorbing capability provided by energy dissipation element and high lateral stiffness provided by diagonal braces. The seismic performance is also affected by the length of outsourcing steel at the joint between energy dissipation element of eccentric steel brace and RC frame beam. The joint should be considerably designed to make sure that shear failure can firstly occur in energy dissipation element.

关键词： Y-eccentrically steel brace energy dissipation element pseudo-dynamic test seismic performance shear failure

Transplanted neuronal precursors migrate and differentiate in the devel-oping mouse brain

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Cell Research 2002年第Z1期 223-228页

作者： WEI MIN PENG , li li YU, CHUN YING BAO, FAN liAO, xue SHENG li, ming xue ZUO* Biomedical Research Institute, Beijing Normal University, Beijing 100875, China

The subventricular zone (SVZ), lining the lateral ventricle in forebrain, retains a population of neuronal precursors with the ability of proliferation in adult mammals. To test the potential of neuronal precursors in adult mice, we transplanted adult SVZ cells labeled with fluorescent dye PKH26 into the lateral ventricle of the mouse brain in different development stages. The preliminary results indicated that the grafted cells were able to survive and migrate into multiple regions of the recipient brain, including SVZ, the third ventricle, thalamus, superior colliculus, inferior colliculus, cerebellum and olfactory bulb etc; and the amount of survival cells in different brain regions was correlated with the development stage of the recipient brain. Immunohistochemical studies showed that most of the grafted cells migrating into the specific target could express neuronal or astrocytic marker. Our results revealed that the neuronal precursors in adult SVZ still retained immortality and ability of prolife

关键词： subventricular zone (SVZ) neuronal precursor cell transplantation migration differentiation mouse.

OSTEOCLASTIC RESORPTION OF CANCELLOUS BONE TISSUES OF FEMORAL NECK IN HIP FRACTURE PATIENTS (A SCANNING ELECTRON MICROSCOPIC STUDY)

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中华创伤杂志 1997年第2期 71-76页

作者： CHAI Ben fu, TANG xue ming, li Hui Shanghai Institute of Traumatology and Orthopaedics Shanghai Second Medical University, Shanghai 200025

ＯＳＴＥＯＣＬＡＳＴＩＣＲＥＳＯＲＰＴＩＯＮＯＦＣＡＮＣＥＬＬＯＵＳＢＯＮＥＴＩＳＳＵＥＳＯＦＦＥＭＯＲＡＬＮＥＣＫＩＮＨＩＰＦＲＡＣＴＵＲＥＰＡＴＩＥＮＴＳ（ＡＳＣＡＮＮＩＮＧＥＬＥＣＴＲＯＮＭＩＣＲＯＳＣＯＰＩＣ... 详细信息

ＯＳＴＥＯＣＬＡＳＴＩＣＲＥＳＯＲＰＴＩＯＮＯＦＣＡＮＣＥＬＬＯＵＳＢＯＮＥＴＩＳＳＵＥＳＯＦＦＥＭＯＲＡＬＮＥＣＫＩＮＨＩＰＦＲＡＣＴＵＲＥＰＡＴＩＥＮＴＳ（ＡＳＣＡＮＮＩＮＧＥＬＥＣＴＲＯＮＭＩＣＲＯＳＣＯＰＩＣＳＴＵＤＹ）ＣＨＡＩＢｅｎ－ｆｕ（...

关键词： HIP FRACTURE NECK FEMORAL PATIENTS CANCELLOUS BONE

POSS/聚合物纳米复合材料的制备及其在光电材料中的应用

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功能材料 2010年第A1期41卷 28-34页

作者：潘倩游波黎学明重庆大学化学化工学院重庆400030 复旦大学材料科学系教育部先进涂料工程研究中心上海200433

多面体低聚硅倍半氧烷(POSS)是一种新型有机-无机纳米材料。由于其具有优异的光学、电学、力学和热稳定性能,利用具有笼状结构的POSS带有的一个或多个具有反应活性的官能团进行聚合、接枝、表面改性等将POSS引入聚合物分子链段,制备有机... 详细信息

多面体低聚硅倍半氧烷(POSS)是一种新型有机-无机纳米材料。由于其具有优异的光学、电学、力学和热稳定性能,利用具有笼状结构的POSS带有的一个或多个具有反应活性的官能团进行聚合、接枝、表面改性等将POSS引入聚合物分子链段,制备有机/无机纳米复合材料,可以明显改善聚合物的光、电、热等性能。综述了POSS/聚合物纳米复合材料的制备及其在光电材料中的研究进展。

关键词：多面体低聚硅倍半氧烷(POSS) 聚合物,纳米复合材料光电应用

Study on Haploid Inducing and Its Meiotic Abnormality in Maize

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Agricultural Sciences in China 2009年第10期8卷 1159-1165页

作者： TANG Qi-lin, FENG Yun-chao, HAN xue-li, ZHENG ming-min and RONG Ting-zhao Maize Research Institute, Sichuan Agricultural University, Ya’an 625014, P.R.China Maize Research Institute Sichuan Agricultural University Ya'an 625014 P.R. China

The haploid-inducing line Stock 6 was used to produce haploid maize and expected to obtain maize haploid plants successfully. The detailed meiotic studies on selected haploid maize （n = x = 10） were conducted. Cytogenetic analysis revealed a high frequency of meiotic abnormality occurred in both meiosis Ⅰ and meiosis Ⅱ. During the prophase Ⅰ, univalents were common configurations, and there were bivalents or trivalents in some pollen mother cells, however, a few cells containing five bivalents were also observed. After prophase Ⅰ, chromosomes did not congregate in a single metaphase plate but they were scattered in the cytoplasm. At anaphase Ⅰ, the chromosome distribution was highly irregular with almost all possible combinations. In some cells, chromosomes were grouped into the three or four masses and several spindles appeared. At the tetrad stage of meiosis Ⅱ, eytokinesis splitting abnormality occurred, and a variety of diad, triad, tetrad, pentad, hexad, as well as decury microspores were easily observed. As a consequence of abnormalities of the two meiotic stages, various microspores and the pollen were almost completely sterile. grains with different size were formed, and its pollen grains

关键词： Zea mays L haploid maize meiosis chromosome Stock 6

The Development of MPEG-2 Research Platform

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The Development of MPEG-2 Research Platform