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Effect of Hydroponic Salix saposhnikovii on Cultivation of Procambarus clarkii

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Animal Husbandry and Feed Science 2012年第1期4卷 38-40,44页

作者： SHI Lei GAO Qian WANG Lei HUANG Cheng TANG Jian-qing School of Life Science Nanjing UniversityNanjing 210093China Jinling College Nanjing UniversityNanjing 210089China Jiang-su Academy of Forestry Nanjing 211153China Freshwater Fisheries Research Institute of Jiangsu Province Nanjing 210017China

[ Objective] To provide basic research parameters for the laboratory culture of Procambarus clarkii using Salix saposhnikovii and the breeding materials for the clean environment-friendly aquaculture. [Method] The de-aerated water was used to culture the post larvae and P. clarkii juvenile. The effects of S. saposhnikovii roots on the survival rate, body length increase and body length variation coefficient of P. clarkii were in- vestigated. The survival rate of juvenile P. clarkii in the V class wastewater at 2 ammonia nitrogen concentrations were examined. [ Result] The post larvae of P. clarkii cultivated with S. saposhnikovii in the de-aerated water had significantly higher survival rate and longer body length than the control （ P 〈 0.05）, but there was no significant difference between the 2 treatments in the variation coefficient of body length. In the wastewater containing 2 mg/L ammonia nitrogen, the survival rate and ammonia nitrogen wastewater purification rate of the experimental juvenile P. clarkii were higher than the control. When the concentration of ammonia nitrogen increased to 10 mg/L, the survival rate of the experimental juvenile P. clarkii was still higher than the control, but there was no significant difference between the 2 groups in the purification rate of ammonia nitrogen. [ Conclu- sien] S. saposhnikovii has significant effect on the survival rate and growth of juvenile P. clarloTand can purify the wastewater containing 2 -10 mg/L ammonia nitrogen.

关键词： Salix saposhnikovii Procambarus clarkii Cultivation Purification of ammonia nitrogen

Risk Assessment of Hail Disaster on Cotton——A Case Study in Anhui Province

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Agricultural Science & Technology 2012年第8期13卷 1744-1748页

作者：尹圆圆王静爱赵金涛岳耀杰马进北京师范大学地理学与遥感科学学院北京100875 北京师范大学区域地理研究重点实验室北京100875 北京师范大学地表过程与资源生态国家重点实验室北京100875 廊坊师范学院管理学院河北廊坊065000 安徽省宿州市民政局安徽宿州234000

[Objective] The aim was to reveal the pattern of hail disaster risk for cotton in Anhui Province. [Method] Based on database of risk evaluation on hail disaster for cotton in Anhui Province, statistical inference and comprehensive indices measurement were made use of for extraction of disastrous index of hail （H） and loss rate of cotton （L）. Hail vulnerability curves in four stages （seedling, bud, boll and boll opening stages） of cotton were fitted by Matlab and SPSS software. Risk evaluation on hail disaster of cotton in Anhui Province was conducted and the related map was drawn on basis of yearly model of loss rate （by hail disaster）, as follows： Sa=n∑i=1Si-a∏i=1Si=1-（1-Si） [Result] In Anhui Province, high risk area by hail concentrates in northeast regions and mountainous regions in west of Anhui, and lower risk area is distributed in middle and down streams of Yangtze River and mountainous area in south of Anhui. [Conclusion] The research explored evaluation methods on hail risks based on the limited information, and could provide references for risk evaluation on hail disaster in other regions.

关键词： Anhui Province Hail disaster Cotton Risk assessment

源自大黄鱼肠道柠檬酸杆菌的外切几丁质酶的特性分析（英文）

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微生物学报 2016年第7期56卷 1089-1104页

作者：许洁杨雅麟刘阳冉超李娟何夙旭徐俐艾春香周志刚厦门大学海洋与地球学院福建厦门361005 中国农业科学院饲料研究所农业部饲料生物技术重点实验室北京100081

【目的】从饲喂富含几丁质饲料的大黄鱼肠道分离具有几丁质分解功能的菌株并分离鉴定新的几丁质酶。【方法】利用胶体几丁质平板分离饲喂杂鱼的大黄鱼肠道中的几丁质分解菌。对几丁质酶基因chi-X进行了克隆并在大肠杆菌中表达。对CHI-X... 详细信息

【目的】从饲喂富含几丁质饲料的大黄鱼肠道分离具有几丁质分解功能的菌株并分离鉴定新的几丁质酶。【方法】利用胶体几丁质平板分离饲喂杂鱼的大黄鱼肠道中的几丁质分解菌。对几丁质酶基因chi-X进行了克隆并在大肠杆菌中表达。对CHI-X的酶学性质进行了分析。【结果】从饲喂杂鱼的大黄鱼肠道内容物中分离出1株具有几丁质分解功能的费氏柠檬酸杆菌,其中的几丁质酶基因编码1个含493个氨基酸残基的蛋白,其中包含一个糖苷水解酶18家族催化域。CHI-X对胶体几丁质具有分解功能。最适p H和温度分别是4.0和60°C。CHI-X具有很强的pH稳定性,在pH 3.0–11.0的范围培育1 h仍保留90%左右的活性。Mn^(2+),Li^+和K^+可促进CHI-X酶活,Ag^+对CHI-X有抑制作用。CHI-X对蛋白酶和石斑鱼肠道内容物有较强的抗逆性。CHI-X可分解胶体几丁质为N-乙酰葡萄糖胺和N-乙酰葡萄糖胺二聚体,表明它是一个几丁质外切酶。最后,CHI-X和另一个几丁质酶Chi565表现出酶活性的加和效应。【结论】分离自肠道菌的CHI-X能很好适应海水鱼类的肠道环境,可以作为温水海水养殖鱼类的饲料添加剂使用。

关键词：几丁质酶费氏柠檬酸杆菌大黄鱼

A Study on Design of Early Warning Decision Support System of Desertification

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A Study on Design of Early Warning Decision Support System o...

Field validation of the GLASS land surface broadband emissivitydatabase using pseudo-invariant sand dune sites in northern China

2013年中国智能自动化学术会议

作者： Zhengwei Li Jing Du Xianyong Meng Chen Sun Yongqiang Liu Key Laboratory of Oasis Ecology Ministry of Education Xinjiang University

At present,the study on the slowly varying monitoring and early warning system is not perfect at home and *** this paper,desertification database,knowledge base and model base are designed in details and the future evolution of the desert is predicted by the desertification early warning system. The results show that correct rate of simulated distribution of desertification reaches over 90%in the study *** ’Auto Set Sand instrument-Monitoring Platform’ can conduct sand data analysis at *** addition,the WebGIS based system provides necessary decision support for the government.

关键词： Desertification early warning Database Model-library WebGIS Decision support system

来源： cnki会议评论

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International Journal of Digital Earth 2013年第S01期6卷 96-112页

作者： Lixin Dong Juyang Hu Shihao Tang Min Min Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites National Satellite Meteorological CenterBeijingChina

The land surface broadband emissivity (LSBE) is a key parameter for estimatingsurface radiation, and there have been many studies of the LSBE at global orlocal scales. However, few studies have validated the surface emissivity databasewith multi-point field measurement data using infrared radiometry, especially inChina. In this study, we focus on the validation of the emissivity product of theglobal land surface satellite (GLASS) LSBE database for northern China for theperiod from 2006 to 2011. Specifically, we have employed an eight-day averaged,gridded emissivity product in the 813.5 mm spectral range produced at a spatialresolution of 1000 m from the Moderate Resolution Imaging Spectrometeralbedo product using a new algorithm. The GLASS LSBE database was validatedover bare surfaces with field measurement data from sand samples collected atmany pseudo-invariant sand dune sites located in western and northwesternChina. By comparing measured emissivity for different land surface types atdifferent sites and different times, it was shown that the results were consistentand that the accuracy of the field measurements was reliable. The results of thevalidation of GLASS LSBE with these field emissivity data showed very goodagreement.

关键词： validation broadband emissivity field measurement emissivity GLASS northern China

Cadmium Accumulation and Translocation in Two Jerusalem Artichoke(Helianthus tuberosus L.) Cultivars

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Pedosphere 2011年第5期21卷 573-580页

作者： CHEN Liang LONG Xiao-Hua ZHANG Zhen-Hua ZHENG Xiao-Tao Z. RENGEL LIU Zhao-Pu Jiangsu Provincial Key Laboratory of Marine Biology College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 (China) Soil Science and Plant Nutrition School of Earth and Environment the University of Western Australia 35 Stirling Highway Crawley WA 6009 (Australia)

Jerusalem artichoke(Helianthus tuberosus L.) not just can be used for bioethanol production but may be potentially used in phytoremediation for the removal of heavy metal *** Jerusalem artichoke cultivars,N2 and N5,were subjected to six cadmium(Cd) concentrations(0,5,25,50,100 and 200 mg L1) to investigate Cd tolerance and *** 21 days of growth,the effects of Cd on growth,chlorophyll content,net photosynthetic rate,intercellular CO2 concentration and malondialdehyde content were *** growth parameters were reduced under Cd *** two Jerusalem artichoke cultivars had relatively high Cd tolerance and accumulation capacity(> 100 mg kg1),with N5 being more tolerant and having higher Cd accumulation than *** accumulated more Cd than stems and *** bioconcentration factors(far higher than 1) and translocation factors(lower than 1) decreased with an increase in Cd *** results suggested that Jerusalem artichoke could be grown at relatively high Cd loads,and N5 could be an excellent candidate for phytoremediation of Cd-contaminated soils.

关键词： bioconcentration factor Cd-contaminated soils heavy metal phytoremediation tolerance index

Chemical Composition of Summertime PM_(2.5) and Its Relationship to Aerosol Optical Properties in Guangzhou,China

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Atmospheric and Oceanic Science Letters 2012年第2期5卷 88-94页

作者： Tao Jun Cheng Tian-Tao Zhang Ren-Jian South China Institute of Environmental Sciences Guangzhou 510655 China Department of Environment Science and Engineering Fudan University Shanghai 200433 China Key Laboratory of Regional Climate-Environment Research for Temperate East Asia (RCE-TEA) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Urban aerosols have a large effect on the deterioration of air quality and the degradation of atmospheric *** of the chemical composition of PM 2.5 and in situ measurements of the optical properties of aerosols were conducted in July 2008 at an urban site in Guangzhou,Southern *** mean PM 2.5 concentration for the entire period was 53.7±23.2 μg m *** mean PM 2.5 concentration (82.7±25.4 μg m 3) on hazy days was roughly two times higher than that on clear days (38.8±8.7 μg m 3).The total water-soluble ion species and the total average carbon accounted for 47.9%±4.3% and 35.2%±4.5%,respectively,of the major components of PM *** increase of secondary and carbonaceous aerosols,in particular ammonium sulfate,played an important role in the formation of haze *** mean absorption and scattering coefficients and the single scattering albedo over the whole period were 53±20 M m 1,226±111 M m 1,and 0.80±0.04,*** 2.5 had a high linear correlation with the aerosol extinction coefficient,elemental carbon (EC) was correlated with aerosol absorption,and organic carbon (OC) and SO 4 2 were tightly linked to aerosol scattering.

关键词： fine aerosol particle chemical composition aerosol optical coefficient

Analysis of the Characteristics of Typical Haze in Winter

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Meteorological and Environmental Research 2010年第4期1卷 18-20,51页

作者：张云海王扬锋洪也马雁军中国气象局沈阳大气环境研究所辽宁沈阳110016

Based on meteorology and environment monitoring data in January,2008 in Liaoning central region,a typical haze weather process was *** results showed that haze was formed due to the stable weather condition in the earth surface and upper air layer in Liaoning central *** because that the weakening of atmospheric dispersion ability in the urban boundary layer that was 500 m under earth surface,caused the pollutant in the air can not ***,it resulted in the deterioration of air quality,increase of concentration of particulate mass,and declination of *** in the end,haze formed.

关键词： Haze Characteristics Air quality Data analysis China

Meta-analysis of subtotal stomach-preserving pancreaticoduodenectomy vs pylorus preserving pancreaticoduodenectomy

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World Journal of Gastroenterology 2015年第20期21卷 6361-6373页

作者： Wei Huang Jun-Jie Xiong Mei-Hua Wan Peter Szatmary Shameena Bharucha Ilias Gomatos Quentin M Nunes Qing Xia Robert Sutton Xu-Bao Liu Sichuan Provincial Pancreatitis Center Department of Integrated Traditional Chinese Medicine and Western MedicineWest China HospitalSichuan University Department of Pancreatic Surgery West China HospitalSichuan University NIHR Liverpool Pancreas Biomedical Research Unit Royal Liverpool University Hospital

AIM: To investigate the differences in outcome following pylorus preserving pancreaticoduodenectomy(PPPD) and subtotal stomach-preserving pancreaticoduodenectomy(SSPPD).METHODS: Major databases including Pub Med(Medline), EMBASE and Science Citation Index Expanded and the Cochrane Central Register of Controlled Trials(CENTRAL) in The Cochrane Library were searched for comparative studies between patients with PPPD and SSPPD published between January 1978 and July 2014. Studies were selected based on specific inclusion and exclusion criteria. The primary outcome was delayed gastric emptying(DGE). Secondary outcomes included operation time, intraoperative blood loss, pancreatic fistula, postoperative hemorrhage, intraabdominal abscess, wound infection, time to starting liquid diet, time to starting solid diet, period of nasogastric intubation, reinsertion of nasogastric tube, mortality and hospital stay. The pooled odds ratios(OR) or weighted mean difference(WMD) with 95% confidence intervals(95%CI) were calculated using either a fixed-effects or random-effects model. RESULTS: Eight comparative studies recruiting 650 patients were analyzed, which include two RCTs, one non-randomized prospective and 5 retrospective trial designs. Patients undergoing SSPPD experienced significantly lower rates of DGE(OR = 2.75; 95%CI: 1.75-4.30, P < 0.00001) and a shorter period of nasogastric intubation(OR = 2.68; 95%CI: 0.77-4.58,P < 0.00001), with a tendency towards shorter time to liquid(WMD = 2.97, 95%CI:-0.46-7.83; P = 0.09) and solid diets(WMD = 3.69, 95%CI:-0.46-7.83; P = 0.08) as well as shorter inpatient stay(WMD = 3.92, 95%CI:-0.37-8.22; P = 0.07), although these latter three did not reach statistical significance. PPPD, however, was associated with less intraoperative blood loss than SSPPD [WMD =-217.70, 95%CI:-429.77-(-5.63); P = 0.04]. There were no differences in other parameters between the two approaches, including operative time(WMD =-5.30, 95%CI:-43.44-32.84; P = 0.79

关键词： Pancreaticoduodenectomy Pylorus preservingSubtotal stomach preserving pancreaticoduodenectomy Delayed gastric emptying Pancreatic surgery Metaanalysis