检索结果-南通市图书馆

Risk of anemia in morbidly obese patients after bariatric surgery in Taiwan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2020年第10期11卷 447-458页

作者： Tse-Yao Wang Hsien-Hao Huang Ming-Shun Hsieh Chih-Yen Chen Department of Emergency Medicine Taipei Veterans General HospitalTaipei 112Taiwan College of Medicine National Yang-Ming University of MedicineTaipei 112Taiwan Department of Emergency Medicine Taipei Veterans General HospitalTaoyuan BranchTaoyuan 330Taiwan Institute of Occupational Medicine and Industrial hygiene National Taiwan University College of Public HealthTaipei 112Taiwan Division of Gastroenterology and Hepatology Department of MedicineTaipei Veterans General HospitalTaipei 112Taiwan Faculty of Medicine and Institute of Emergency and Critical Medicine National Yang-Ming University School of MedicineTaipei 112Taiwan Chinese Taipei Society for the Study of Obesity Taipei 110Taiwan

BACKGROUND Bariatric surgery is one of most effective long-term treatments for morbid ***,post-bariatric surgery anemia is identified as a common adverse effect and remains a challenge *** To estimate the risk of post-bariatric surgery anemia and to stratify the association between age,gender,and types of *** This study is a population-based cohort *** conducted this nationwide study using claims data from national Health Insurance Research Database in *** were 4373 morbidly obese patients in this study *** Among patients who were diagnosed with morbid obesity,2864 received bariatric *** obesity-associated comorbidities decreased in the surgical *** risk of post-bariatric surgery anemia among obese patients was found by Cox proportional hazards regression[adjusted hazard ratio(HR):2.36].Also,we found significantly increasing cumulative incidence rate of anemia among patients receiving bariatric surgery by log-rank *** adjusting for age and gender,the increasing incidence of post-bariatric surgery anemia was found among women(adjusted HR:2.48),patients in the 20–29-year-old group(adjusted HR:3.83),and patients in the 30-64-year-old group(adjusted HR:2.37).Moreover,malabsorptive and restrictive procedures had significantly higher adjusted HRs,3.18 and 1.55,*** Bariatric surgery give rise to anemia risk among obese patients,specifically in women,young-and middle-aged patients,and patients undergoing malabsorptive procedures in our population-based cohort study in Taiwan.

关键词： Anemia Bariatric surgery Malabsorptive procedure Obesity Restrictive procedure Women

Characterization of Hapten-Protein Conjugates for Immunoassay of Polycyclic Aromatic Hydrocarbons(PAHs)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2008年第6期24卷 697-700页

作者： ZHANG Yan-feng GAO Zhi-xian SUN Hong-wen DAI Shu-gui College of Environmental Science and Engineering Key Laboratory for Pollution Process and Environmental Criteria of Ministry of Education Nankai University Tianjin 300071 P R. China Institute of hygiene and Environmental Medicine Tianjin 300050 P R. China

Preparation and characterization of the hapten-protein conjugates are fundamental to developing environmental immunoassays. As a hapten, 1-pyrenebutyric acid（PBA） was conjugated to the carrier protein of bovine serum albumin（BSA） or ovalbumin（OVA） by active ester method. Infrared spectra（IR） showed that PBA-BSA and PBA-OVA conjugates were successfully prepared. The number of the haptens conjugated to the carrier protein was determined by ultraviolet spectra（UV） and matrix-assisted laser desorption ionization time-of-flight mass spectrometry（MALDI-TOF-MS）. The calculated average binding ratios of PBA/BSA and PBA/OVA were 18：1 and 10：1 by UV, and 31：1 and 22：1 by MALDI-TOF-MS, respectively. Although there was a discrepancy between the results determined by the two methods, both of them were useful for the characterization of the hapten-protein conjugates. The antibody was produced against the antigen of PBA-BSA, and the affinity was tested by the double agar diffusion method The conjugates and the antibody could be used for developing a sensitive and selective immunoassay of polycyclic aromatic hydrocarbons（PAHs）.

关键词： Polycyclic aromatic hydrocarbons Hapten Conjugate Immunoassay Characterization

随机扩增多态性DNA技术研究发现二氧化钛纳米颗粒对西葫芦具有基因毒性(英文)

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2014年第8期15卷 618-623页

作者： Fabiola MORENO-OLIVAS Vincent U.GANT Jr. Kyle L.JOHNSON Jose R.PERALTA-VIDEA Jorge L.GARDEA-TORRESDEY Depertment of Chemistry The University of Texas at El Paso El Paso TX 79968 USA University of California Center for Environmental Implications of Nanotechnology (UC CEIN) The University of Texas at El Paso El Paso TX 79968 USA Department of Biological Sciences and border Biomedical Research Center The University of Texas at El Paso El Paso TX 79968 USA Environmental Science and Engineering PhD program The University of Texas at El Paso El Paso TX 79968 USA

研究目的:二氧化钛(TiO2)纳米颗粒已经广泛应用于化妆品、防晒霜、涂料和牙膏等。这些纳米颗粒性质非常稳定,能在废水和生物固体中转移和分散。现有研究表明,TiO2纳米颗粒对动物正常生理活动具有毒性等负面作用。但是,它们对植物是否具... 详细信息

研究目的:二氧化钛(TiO2)纳米颗粒已经广泛应用于化妆品、防晒霜、涂料和牙膏等。这些纳米颗粒性质非常稳定,能在废水和生物固体中转移和分散。现有研究表明,TiO2纳米颗粒对动物正常生理活动具有毒性等负面作用。但是,它们对植物是否具有毒性特别是是否会产生植物基因毒性至今尚不清楚。因此,本文使用随机扩增多态性DNA技术研究TiO2纳米颗粒是否对西葫芦具有基因毒性,为TiO2纳米颗粒排放进入环境后的潜在植物毒性风险评价提供依据。创新要点:首次发现了TiO2纳米颗粒对西葫芦具有基因毒性。重要结论:采用随机扩增多态性DNA技术,发现TiO2纳米颗粒污染处理的西葫芦样品与未处理样品的基因组DNA图谱相比,不仅在谱带强度有明显差异,而且存在谱带消失和新谱带产生现象,表明TiO2纳米颗粒对西葫芦具有基因毒性。

关键词：随机扩增多态性DNA技术 TiO2 纳米颗粒基因组DNA 西葫芦毒性

Advanced 3D nanohybrid foam based on graphene oxide: Facile fabrication strategy, interfacial synergetic mechanism, and excellent photocatalytic performance

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2019年第12期62卷 1888-1897页

作者： Xiaoyuan Zhang Wenfeng Wei Shan Zhang Bianying Wen Zhiqiang Su State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Quality Evaluation Technology for hygiene and Safety of Plastics Beijing Technology and Business UniversityBeijing 100048China

Herein,a unique nanohybrid foam was fabricated with titanium dioxide(TiO2)-carbon quantum dots(CQDs)nanoparticles intercalated between graphene oxide(GO)layers via a facile and low-cost solvothermal *** with pure GO foam,the fabricated GO-TiO2-CQDs foam displayed high degradation rate towards methyl orange(MO),methylene blue(MB),and rhodamine B(Rh B),respectively,under the Xenon lamp *** composite foam can be used for several times and remain a high degradation rate without structural *** photochemical property was attributed to the 3D porous structure of GOTiO2-CQDs foam,in which ultrafine hydrogenated TiO2-CQDs nanoparticles were densely anchored on the GO *** paper provides an efficient strategy to tune the charge transport and thus enhance the photocatalytic performance by combining the semi-conductive GO and quantum dots.

关键词： graphene titanium dioxide carbon quantum dots nanohybrid foam photocatalytic degradation

MRI of magnetically labeled mesenchymal stem cells in hepatic failure model

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第44期16卷 5611-5615页

作者： Kyu Ri Son Se Young Chung Hyo-Cheol Kim Hoe Suk Kim Seung Hong Choi Jeong Min Lee Woo Kyung Moon Department of Radiology Korea University Medical CenterAnam Hospital Department of Radiology Seoul National University College of Medicine Institute of Radiation MedicineSeoul National University Medical Research Center Clinical Research Institute Seoul National University Hospital

AIM:To track intravascularly transplanted mesenchymal stem cells (MSCs) labeled with superparamagnetic iron oxide (SPIO) by using magnetic resonance imaging (MRI) in an experimental rabbit model of hepatic ***:Human MSCs labeled with FDA-approved SPIO particles (Feridex) were transplanted via the mes-enteric vein into rabbits (n=16) with carbon tetrachloride-induced hepatic *** resonance (MR) examinations were performed with a 3.0 T clinical scanner immediately before and 2 h and 1,3,and 7 d after *** intensity (SI) changes on T2weighted MRI were measured,and correlation between MR findings and histomorphologic findings was also ***:SI on T2-weighted MRI decreased significantly in the liver 2 h after injection of human MSCs and returned gradually to the levels found before injection in 7 *** in SI in the liver at 2 h,1,3,and 7 d were 41.87% ± 9.63%,10.42% ± 4.3%,5.12% ± 1.9%,3.75% ± 1.2%,respectively (P border zone in late period (3 and 7 d).The number of iron-positive cells in the liver at 2 h and on 1,3 and 7 d after transplantation was 29.2 ± 4.8,10.1 ± 3.7,6.7 ± 2.2,and 5.8 ± 2.1,respectively (P=0.013).CONCLUSION:Intravascularly injected SPIO-labeled MSCs in an experimental rabbit model of hepatic failure can be detected and followed with MRI.

关键词： Stem cell Liver failure Magnetic resonance Nanoparticle Transplantation

Bird species composition and conservation challenges in the Gaoligong Mountains, one of the most diverse bird areas in the world

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Zoological Research(Diversity and Conservation) 2024年第1期1卷 20-50页

作者： Fei Wu Jian-Yun Gao Dao Yan Le Yang Lu-Ming Liu Shun-Yu Yao Chang-Sheng Zuo Jun Sun Ge Gao Jian-Yong Su Li Luo Ying-Chun Li Ming Liu Yuan-Fang Hu Ming Wei Xiao-Jun Yang State Key Laboratory of Genetic Resources and Evolution&Yunnan Key Laboratory of Biodiversity and Ecological Conservation of Gaoligong Mountain Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650201China Xizang Plateau Institute of Biology LhasaXizang 850001China Kunming Natural History Museum of Zoology Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Yunnan Tongbiguan Provincial Nature Reserve DehongYunnan 679300China Yunnan Gaoligongshan national Nature Reserve NujiangYunnan 671400China Yunnan Gaoligongshan national Nature Reserve BaoshanYunnan 678000China China Birdwatching Association KunmingYunnan 650225China Gaoligong Mountain Forest Ecosystem Observation and Research Station of Yunnan Province Dulongjiang Forest Ecosystem Research StationGongshanYunnan 673500China

The Gaoligong Mountains(GLGM),located in southwestern China,extend north to south along the western border of the Hengduan Mountains,spanning approximately 600 *** this study,we consolidated findings from 17 bird surveys conducted in the GLGM between 2010 and *** found that the GLGM harbors tremendous bird diversity,with a total of 796 documented bird species in the *** a quarter(23.0%)of these species are listed as state key protected species or as Chinese and global threatened *** of species richness at the county level showed a decreasing trend with increasing latitude,with the greatest diversity in Yingjiang(661 species).Observations indicated that the GLGM belongs to the Oriental realm,primarily composed of bird species from southern and southwestern *** GLGM plays an important role in avian conservation by sheltering exceptional bird diversity,providing corridors and flyways for bird migration and dispersal,and mitigating the effects of climate *** response to the conservation needs of birds and other wildlife,the Chinese government has established numerous protected areas within the *** these efforts,avian conservation still faces considerable challenges in the GLGM due to limitations in the protected area network,transboundary nature of the regions,and existing gaps in monitoring and research.

关键词： Birds Gaoligong Mountains Zoogeographic region Conservation challenge

Improving Interfacial Adhesion of PLA/Lignin Composites by One-Step Solvent-Free Modification Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2020年第9期8卷 1139-1149页

作者： Ningning Wang Caili Zhang Wenqin Zhu Yunxuan Weng School of Materials and Mechanical Engineering Beijing Technology and Business UniversityBeijing100048China Beijing Key Laboratory of Quality Evaluation Technology for hygiene and Safety of Plastics Beijing Technology and Business UniversityBeijing100048China Petrochemical Research Institute PetroChinaBeijing102206China

To clarify the effects of lignin as a biodegradable filler added into the PLA matrix,PLA/lignin composites with or without silane coupling agent ofγ-(2,3-epoxypropoxy)propy trimethoxysilane(KH560)were prepared by a one-step solvent-free modification *** effects of KH560 as a compatibilizer on the morphology,chemical structure,crystallization behavior,thermal degradative behavior as well as mechanical strength of the PLA/lignin composites were analyzed in *** was found that,after modification by KH560,the fractured surfaces of composites became smooth,suggested sufficient bonding between the lignin and PLA in the composites with KH560 coupling agent *** result further proved by 1H NMR and ATR spectra of the composites that lignin and PLA formed stable chemical bonds with *** to the toughening effect of KH560,mainly affect the molecular chain mobility,the thermodynamic properties of LG-KH560/PLA composites were all *** compared to the conventional solution modification method of adding silane coupling agents into PLA/lignin,the composites were synthesized via a single-step reactive extrusion modification procedure in this work showed relatively low tensile strength,which mainly because the existence of the free radicals due to coupling agents result in the composite’s deterioration and subsequent weakening of the tensile properties.

关键词： PLA lignin composites interfacial adhesion reactive extrusion

Improved interfacial and electrical properties of GaSb metal oxide semiconductor devices passivated with acidic(NH_4)_2S solution

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第7期23卷 744-747页

作者：赵连锋谭桢王敬许军 Tsinghua national Laboratory for Information Science and Technology Institute of MicroelectronicsTsinghua University

Surface passivation with acidic （NH4）2S solution is shown to be effective in improving the interfacial and electrical properties of HfOE/GaSb metal oxide semiconductor devices. Compared with control samples, the samples treated with acidic （NH4）2S solution show great improvements in gate leakage current, frequency dispersion, border trap density, and interface trap density. These improvements are attributed to the enhancing passivation of the substrates, according to analysis from the perspective of chemical mechanism, X-ray photoelectron spectroscopy, and high-resolution cross-sectional transmission electron microscopy.

关键词： GaSb metal oxide semiconductor sulfur passivation

Chemo/Dietary prevention of cancer:perspectives in China

在线全文

学校读者我要写书评

暂无评论

The Journal of Biomedical Research 2014年第6期28卷 447-455页

作者： Chung S Yang Qing Feng Department of Chemical Biology Center for Cancer Prevention Research and Rutgers Cancer Institute of New JerseyRutgers University Department of Nutrition and Food hygiene School of Public HealthNanjing Medical University

Cancer is a major disease worldwide and different approaches are needed for its *** laboratory and clinical studies suggest that cancer can be prevented by chemicals,including those from the ***,epidemiological studies have suggested that deficiencies in certain nutrients can increase the risk of some *** this article on chemo/dietary prevention,examples will be given to illustrate the effectiveness of chemopreventive agents in the prevention of breast,colon and prostate cancers in high-risk populations and the possible side effects of these *** potential usefulness of dietary approaches in cancer prevention and the reasons for some of the failed trials will be *** learned from these studies can be used to design more relevant research projects and develop effective measures for cancer prevention in the *** development of effective chemopreventive agents,the use of nutrient supplements in deficient or carcinogen-exposed populations,and the importance of cohort studies will be discussed in the context of the current socioeconomic situation in *** discussions are needed on how we can influence society to pay more attention to cancer prevention research and measures.

关键词： cancer chemoprevention dietary intervention