检索结果-南通市图书馆

Evaluation of health benefit using Ben MAP-CE with an integrated scheme of model and monitor data during Guangzhou Asian Games

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2016年第4期28卷 9-18页

作者： Dian Ding Yun zhu Carey Jang Che-Jen Lin Shuxiao Wang Joshua Fu jian Gao Shuang Deng Junping Xie Xuezhen Qiu Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environmental and Energy South China University of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China. State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084 China USEPA/Office of Air Quality Planning & Standards RTP NC27711 USA Department of Civil Engineering Lamar University Beaumont TX 77710-0024 USA Department of Environmental Science and Engineering Tsinghua University Beijing 100084 China Department of Civil & Environmental Engineering University of Tennessee Knoxville TN 37996-2010 USA Chinese Research Academy of Environmental Sciences Beijing 100012 China

Guangzhou is the capital and largest city（land area：7287 km2）of Guangdong province in South *** air quality in Guangzhou typically worsens in November due to unfavorable meteorological conditions for pollutant *** the Guangzhou Asian Games in November 2010,the Guangzhou government carried out a number of emission control measures that significantly improved the air *** this paper,we estimated the acute health outcome changes related to the air quality improvement during the 2010 Guangzhou Asian Games using a next-generation,fully-integrated assessment system for air quality and health *** advanced system generates air quality data by fusing model and monitoring data instead of using monitoring data alone,which provides more reliable *** air quality estimates retain the spatial distribution of model results while calibrating the value with *** results show that the mean PM2.5concentration in November 2010 decreased by 3.5μg/m^3 compared to that in 2009 due to the emission control *** the analysis,we estimate that the air quality improvement avoided 106 premature deaths,1869 cases of hospital admission,and 20,026 cases of outpatient *** overall cost benefit of the improved air quality is estimated to be 165 million CNY,with the avoided premature death contributing 90%of this *** research demonstrates that Ben MAP-CE is capable of assessing the health and cost benefits of air pollution control for sound policy making.

关键词： Air quality Health benefit PM2.5 Ben MAP-CE Data fusion Model and monitor data

Napelline-type C_(20)-diterpenoid alkaloid iminiums from an aqueous extract of ‘‘fu zi'': Solvent-/base-/acid-dependent transformation and equilibration between alcohol iminium and aza acetal forms

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2016年第7期27卷 993-1003页

作者： Xian-Hua Meng Zhi-Bo jiang Cheng-Gen zhu Qing-Lan Guo Cheng-Bo Xu jian-Gong Shi State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College

Three new napelline-type C20-diterpenoid alkaloids,named aconicarmichinium A and B trifluoroacetates（1 and 2） and aconicarmichinium C chloride（3）,were isolated from an aqueous extract of ＂fu zi＂,the lateral roots of Aconitum *** structures were elucidated by extensive spectroscopic data *** 1-3 represent the first examples of napelline-type C20 diterpenoid alkaloid alcohol iminiums,of which the structures were fully *** addition,transformation and equilibration between the alcohol iminiums（1-3） and the aza acetals la-3a were investigated by measurements of the NMR spectra in protic and aprotic deuterium solvents including alkali pyridine-d5,along with evaporation under reduced pressure and gradual additions of TFA,AcOH,and *** results demonstrated that the transformation and equilibration were solvent-,base-,and ***,in aqueous biological fluid,these C20-diterpenoid alkaloids would more likely exist as the alcohol iminiums accompanied by anion counterparts in biosystems to increase their solubility, bioavailability, transportations, and *** absolute configurations of 1-3 were confirmed by X-ray crystallographic analysis of 2a.

关键词： Aconitum carmichaelii Ranunculaceae Napelline-type C20-diterpenoid alkaloid Aconicarmichiniums A–C Alcohol iminium and aza acetal forms of the diterpenoid alkaloid Transformation and equilibration

Leaf area index based nitrogen diagnosis in irrigated lowland rice

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2018年第1期17卷 111-121页

作者： LIU Xiao-jun CAO qiang YUAN Zhao-feng LIU Xia WANG Xiao-ling TIAN Yong-chao CAO Wei-xing zhu Yan National Engineering and Technology Center for Information Agriculture Key Laboratory for Crop System Analysis and Decision Making Ministry of Agriculture/Jiangsu Key Laboratory for Information Agriculture/Jiangsu Collaborative Innovation Center forModern Crop Production/Nanjing Agricultural University Nanjing 210095 P.R. China

Leaf area index （LAI） is used for crop growth monitoring in agronomic research, and is promising to diagnose the nitrogen （N） status of crops. This study was conducted to develop appropriate LAI-based N diagnostic models in irrigated lowland rice. Four field experiments were carried out in jiangsu Province of East China from 2009 to 2014. Different N application rates and plant densities were used to generate contrasting conditions of N availability or population densities in rice. LAI was determined by LI-3000, and estimated indirectly by LAI-2000 during vegetative growth period. Group and individual plant characters （e.g., tiller number （TN） and plant height （H）） were investigated simultaneously. Two N indicators of plant N accumulation （NA） and N nutrition index （NNI） were measured as well. A calibration equation （LAI=1.7787LAI2o00-0.8816, R2=0.870＂） was developed for LAI-2000. The linear regression analysis showed a significant relationship between NA and actual LAI （R2=0.863^＊＊）. For the NNI, the relative LAI （R2=0.808-） was a relatively unbiased variable in the regression than the LAI （R^2=0.33^＊＊）. The results were used to formulate two LAI-based N diagnostic models for irrigated lowland rice （NA=29.778LAI-5.9397; NNI=0.7705RLAI＋0.2764）. Finally, a simple LAI deterministic model was developed to estimate the actual LAI using the characters of TN and H （LAI=-0.3375（THxHx0.01）2＋3.665（TH×H×0.01）-1.8249, R2=0.875＊＊）. With these models, the N status of rice can be diagnosed conveniently in the field.

关键词： leaf area index rice LAI-2000 nitrogen diagnosis plant characters

Re-evaluating Transarterial Chemoembolization Failure/Refractoriness:A Survey by Chinese College of Interventionalists

在线全文

学校读者我要写书评

暂无评论

Journal of Clinical and Translational Hepatology 2021年第4期9卷 521-527页

作者： Bin-Yan Zhong Wan-Sheng Wang Shen Zhang Hai-Dong zhu Lei Zhang jian Shen Xiao-Li zhu Gao-Jun Teng Cai-Fang Ni Department of Interventional Radiology the First Affiliated Hospital of Soochow UniversitySuzhouJiangsuChina Center of Interventional Radiology&Vascular Surgery Department of RadiologyZhongda HospitalMedical SchoolSoutheast UniversityNanjingJiangsuChina

Background and Aims:The recognition of transarterial chemoembolization(TACE)failure/refractoriness among Chinese clinicians remains *** an online survey conducted by the Chinese College of Interventionalists(CCI),the aim of this study was to explore the recognition of TACE failure/refractoriness and review TACE application for hepatocellular carcinoma(HCC)treatment in clinical ***:From 27 August 2020 to 30 August 2020 during the CCI 2020 annual meeting,a survey with 34 questions was sent by email to 264 CCI clinicians in China with more than 10 years of experience using TACE for HCC ***:A total of 257 clinicians participated and responded to the *** participants agreed that the concept of“TACE failure/refractoriness”has scientific and clinical significance(n=191,74.3%).Nearly half of these participants chose TACE-based combination treatment as subsequent therapy after so-called TACE failure/refractoriness(n=88,46.1%).None of the existing TACE failure/refractoriness definitions were widely accepted by the participants;thus,it is necessary to re-define this concept for the treatment of HCC in China(n=235,91.4%).Most participants agreed that continuing TACE should be performed for patients with preserved liver function,presenting portal vein tumor thrombosis(n=242,94.2%)or extrahepatic spread(n=253,98.4%),after the previous TACE treatment to control intrahepatic lesion(s).Conclusions:There is an obvious difference in the recognition of TACE failure/refractoriness among Chinese clinicians based on existing *** work should be carried out to re-define TACE failure/refractoriness.

关键词： Hepatocellular carcinoma TACE Failure Refractoriness Survey

Engineering photo-controllable fragrance release with flash nanoprecipitation

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

Green Chemical Engineering 2021年第3期2卷 301-308页

作者： Ming Liu Chenxu Yan jianwei Han Zhiqian Guo Yue Wu jian Huang Zuobing Xiao Wei-Hong zhu Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine ChemicalsJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China Apple Flavor&Fragrance Group Co. Ltd.Shanghai200436China School of Perfume and Aroma Technology Shanghai Institute of TechnologyShanghai201418China

Controllable profragrance nanoparticles are in great demand for long-lasting scent in flavor and fragrance ***,the practical applications of controllable fragrance release are limited by the non-tunable size,structural heterogeneity and poor ***,a coumarin-derived phototrigger(CM-OH)is covalently conjugated with alcohol fragrances to obtain the corresponding profragrances(CM-R)which enable to release fragrances under the light controlling ***,we introduce a new engineering strategy to construct fine tunable and highly uniform profragrance nanoparticles with flash nanoprecipitation(FNP)technology,which features commercial available amphiphilic pluronic F127 polymers by encapsulation of photoactivatable profragrances CM-R in hydrophobic cores to enhance the long-lasting photo-controllable fragrance *** the assistance of FNP technology,amphiphilic pluronic polymer and profragrances CM-R in organic solution are instantaneously mixed and subsequently precipitated in the multi-inlet vortex mixer(MIVM),thus obtaining the pluronic F127-encapsulated profragrance nanoparticles with good *** to the traditional thermodynamic encapsulation method,the novel kinetic FNP technology can not only tune the size of profragrance nanoparticles with narrow distribution,but also distinctly improve the batch-to-batch reproducibility,which affords an alternative method for scale-up preparation of amphiphilic profragrance nanoparticles in precisely controllable fragrance delivery system.

关键词： Photo-triggered profragrances Flash nanoprecipitation Tunable nanoparticles Controllable fragrance release

Copper-catalyzed asymmetric propargylic substitution of anthrones and propargylic esters

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第2期33卷 867-870页

作者： Zhiheng Li Danran Li Huaming Xiang jian Huang Yinuo Zheng Cuiju zhu Xiuling Cui Chao Pi Hao Xu Green Catalysis Center and College of ChemistryHenan Key Laboratory of Chemical Biology and Organic ChemistryKey Laboratory of Applied Chemistry of Henan UniversitiesZhengzhou UniversityZhengzhou 450001China Key Laboratory of Pesticides&Chemical Biology Ministry of Education College of ChemistryCentral China Normal UniversityWuhan 430079China

Anthrones are key structural motifs in many natural products, bioactive compounds and pharmaceutical chemicals. Earth-abundant-metal-catalyzed asymmetric functionalization of anthrones has not proved to be viable. Herein, we disclosed a highly enantioselective propargylic substitution of anthrones with propargylic esters using copper salts with chiral N, N, P-ligand. This strategy is amenable to a broad range of substrates, uses readily available starting materials, provides excellent yields with remarkable enantioselectivity under mild conditions, and enables attractive products diversification routes.

关键词： Asymmetric catalysis Propargylic substitution Anthrones Copper catalysis Tridentate ligand

An effective model for predicting acute kidney injury after liver transplantation

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2010年第3期9卷 259-263页

作者： Xu, Xiao Ling, Qi Wei, qiang Wu, jian Gao, Feng He, Zeng-Lei Zhou, Lin Zheng, Shu-Sen Zhejiang Univ Sch Med Affiliated Hosp 1 Dept Hepatobiliary & Pancreat Surg Hangzhou 310003 Zhejiang Peoples R China

BACKGROUND: Acute kidney injury (AKI) is a common complication in the early period after liver transplantation (LT), posing an enormous obstacle to treatment efficiency and patient survival. However, the exact influencing factors of AKI are still unclear and a predictive model is desperately required in the clinic. METHODS: Data of 102 consecutive LTs were reviewed. A model for predicting AKI was established and further validated in a prospective study of 44-patients receiving LT. RESULTS: The incidence of AKI was 32.4%. AKI patients showed a significantly lower survival rate than non-AKI patients. Multivariate analysis demonstrated the independent influencing factors of AKI were preoperative serum creatinine >1.2 mg/dl, intraoperative urine output <= 60 ml/h, intraoperative hypotension status, and intraoperative use of noradrenaline. A model was then established and showed a sensitivity of 75.0%, a specificity of 93.8%, and an accuracy of 88.6% in predicting AKI. CONCLUSIONS: High preoperative serum creatinine, low intraoperative urine output, and intraoperative hypotension contribute to the development of AKI, and intraoperative use of noradrenaline serves as a protective factor. The predictive model could potentially facilitate early prediction and surveillance of AKI. (Hepatobilinty Pancreat Dis Int 2010; 9:259-263)

关键词： acute kidney injury liver transplantation risk factors complications prognosis

Preparation and Supercapacitive Properties of Fe_2O_3/Active Carbon Nanocomposites

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2012年第5期28卷 780-783页

作者： LUO Pei-wen YU jian-guo SHI Zhi-qiang HUANG Hua LIU Lang ZHAO Yong-nan LI Guo-dong ZOU Yong-cun Institute of Nanostructured Materials&Tianjin Key Laboratory of Fiber Modification and Functional Fiber School of Materials Science and EngineeringTianjin Polytechnic UniversityTianjin 300160P R.China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012P.R.China

Fe2O3/active carbon（Fe2O3/AC） nanocomposites were readily fabricated by pyrolyzing Fe3＋ impregnated active carbon in a nitrogen atmosphere. The as-prepared composites were studied by X-ray powder diffraction（XRD）, X-ray photoelectron spectroscopy（XPS） and transmission electron microscopy（TEM）. The capacitive property of the composites was investigated by cyclic voltammetry（CV） and galvanostatic charge-discharge test. Physical characterizations show that the γ-Fe2O3 fine grains dispersed in the AC well, with a mean size of 21.24 nm. Electrochemical tests in 6 mol/L KOH solutions indicate that the as-prepared nanocomposites exhibited improved capacitive properties. The specific capacitance（SC） of Fe2O3/AC nanocomposites was up to 188.4 F/g that was derived from both electrochemical double-layer capacitance and pseudo-capacitance, which was 78% larger than that of pristine AC. A symmetric capacitor with Fe2O3/AC nanocomposites as electrode showed an excellent cycling stability. The SC was only reduced by a factor of 9.2% after 2000 cycles at a current density of 1 A/g.

关键词： Nanocomposite Fe2O3 Active carbon Supercapacitor

Natural variation in SlSOS2 promoter hinders salt resistance during tomato domestication

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2023年第1期10卷 232-239页

作者： Yechun Hong Xijin Guan Xu Wang Dali Kong Shuojun Yu Zhiqiang Wang Yongdong Yu Zhen-Fei Chao Xue Liu Sanwen Huang jian-Kang zhu Guangtao zhu Zhen Wang School of Life Sciences Anhui Agricultural UniversityHefeiAnhui230036China Shanghai Center for Plant Stress Biology and Center for Excellence in Molecular Plant Sciences Chinese Academy of SciencesShanghai 200032China The AGISCAAS-YNNU Joint Academy of Potato Sciences Yunnan Normal UniversityKunming650500China Genome Analysis Laboratory of the Ministry of Agriculture Agricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen518000China Institute of Advanced Biotechnology and School of Life Sciences Southern University of Science and TechnologyShenzhen 518055China

Increasing soil salinization seriously impairs plant growth and development,resulting in crop *** Salt-Overly-Sensitive(SOS)pathway is indispensable to the mitigation of Na+toxicity in plants under high ***,whether natural variations of SOS2 contribute to salt tolerance has not been *** a natural variation in the SlSOS2 promoter region was identified to be associated with root Na+/K+ratio and the loss of salt resistance during tomato *** natural variation contains an ABI4-binding cis-element and plays an important role in the repression of SlSOS2 *** evidence revealed that SlSOS2 mutations increase root Na+/K+ratio under salt stress conditions and thus attenuate salt resistance in ***,our findings uncovered a critical but previously unknown natural variation of SOS2 in salt resistance,which provides valuable natural resources for genetic breeding for salt resistance in cultivated tomatoes and other crops.

关键词： breeding SOS soil