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Responses of soil inhabiting nitrogen-cycling microbial communities to wetland degradation on the Zoige Plateau,China

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Journal of Mountain Science 2016年第12期13卷 2192-2204页

作者： WU Li-sha NIE Yuan-yang yang zhi-rong ZHANG Jie Key Laboratory of Biological Resource and Ecological Environment of the Ministry of Education College of Life SciencesSichuan University College of Medical Technology Chengdu University of Traditional Chinese Medicine

The wetlands on the Zoige Plateau have experienced serious degradation,with most of the original marsh being converted to marsh meadow or *** on the 3 wetland degradation stages,we determined the effects of wetland degradation on the structure and relative abundance of nitrogencycling(nitrogen-fixing,ammonia-oxidizing,and denitrifying) microbial communities in 3 soil types(intact wetland:marsh soil;early degrading wetland:marsh meadow soil;and degraded wetland:meadow soil) using *** structure and relative abundance of nitrogen-cycling microbial communities differed in the 3 soil *** was the predominant phylum in most soil samples but the most abundant soil nitrogenfixing and denitrifying microbial bacteria differed at the class,order,family,and genus levels among the 3soil *** the genus level,the majority of nitrogenfixing bacterium sequences related to Bradyrhizobium were from marsh and marsh meadow soils;whereas those related to Geobacter originated from meadow *** majority of ammonia-oxidizing bacterium sequences related to Nitrosospira were from marsh(except for the 40-60 cm layer),marsh meadow and meadow soils;whereas those related to Candidatus Solibacter originated from 40-60 cm layer of marsh *** majority of denitrifying bacterium sequences related to Candidatus Solibacter and Anaeromyxobacter were from marsh and meadow soils;whereas those related to Herbaspirillum originated from meadow *** distribution of operational taxonomic units(OTUs)and species were correlated with soil type based upon Venn and Principal Coordinates Analysis(PCoA).Changes in soil type,caused by different water regimes were the most important factors influencing compositional changes in the nitrogen-fixing,ammonia-oxidizing,and denitrifying microbial communities.

关键词： Zoige Plateau Wetland degradation Nitrogen-cycling microbial communities 454 Pyrosequencing

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Soil Cellulase Activity and Fungal Community Responses to Wetland Degradation in the Zoige Plateau, China

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Journal of Mountain Science 2015年第2期12卷 471-482页

作者： WU Li-sha FENG Su NIE Yuan-yang ZHOU Jian-hong yang zhi-rong ZHANG Jie Key Laboratory of Biological Resource and Ecological Environment of the Ministry of Education College of Life SciencesSichuan University State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University

Four soil types(peat, marsh, meadow, and sandy) in the Zoige Plateau of China are associated with the severity of wetland degradation. The effects of wetland degradation on the structure and abundance of fungal communities and cellulase activity were assessed in these 4 soil types at 3 depths using DGGE(Denatured Gradient Gel Electrophoresis), q PCR(Quantitative Real-time PCR),and 3,5-dinitrosalicylic acid assays. Cellulase activity and abundance of the fungal community declined in parallel to the level of wetland degradation(from least to most disturbed). DGGE analysis indicated a major shift in composition of fungal communities among the4 soil types consistent with the level of *** content(WC), organic carbon(OC), total nitrogen(TN), total phosphorus(TP), available nitrogen(AN), and available phosphorus(AP) were strongly correlated with cellulase activity and the structure and abundance of the fungal *** results indicate that soil physicochemical properties(WC, OC, TN, TP, AN, and AP), cellulase activity, and diversity and abundance of fungal communities are sensitive indicators of the relative level of wetland degradation. WC was the major factorinvolved in Zoige wetland degradation and lower WC levels contributed to declines in the abundance and diversity of the fungal community and reduction in cellulase activity.

关键词： Wetland degradation Soil cellulase Fungal community DGGE(Denatured Gradient Gel Electrophoresis) qPCR(Quantitative Real-time PCR)

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Isolation, Identification and Earliness Effect Analysis of Rice Dominant Earliness Gene Ef-cd

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Agricultural Sciences in China 2005年第8期4卷 561-566页

作者： DENG Xiao-jian WANG Ping-rong LI Xiu-lan DONG Chun-lin yang zhi-rong Rice Research Institute Sichuan Agricultural University Chengdu 611130 P.R.China College of Life Sciences Sichuan University Chengdu 610064 P.R.China

Ef-cd gene is a dominant earliness gene located on the short arm of rice chromosome 3. In this paper, through continuous backcross, self-pollination and molecular marker assisted selection, individual Ef-cd gene was isolated and its nearly isogenic lines were constructed by using early-maturing indica line 6442S-7 as the donor parent, and by using latematuring indica line Minghui 63 （MH63）, Shuhui 881 （SH881） and Shuhui 527 （SH527） as the recurrent parents （genetic background）, respectively. Further, it was found out that Ef-cd gene could generally advance rice to head 11-14 d earlier. So, it was considered that Ef-cd gene played an important role in rapid developing early-maturing and super high-yielding rice varieties.

关键词： Rice Growth duration Earliness Dominant earliness gene Gene effect

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Effects of Incretin-based Therapies on Weight-related Indicators among Patients with Type 2 Diabetes: A Network Meta-analysis

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Biomedical and Environmental Sciences 2020年第1期33卷 37-47页

作者： XU Lu YU Shu Qing GAO Le HUANG Yi WU Shan Shan yang Jun SUN Yi Xin yang zhi rong CHAI San Bao ZHANG Yuan JI Li Nong SUN Feng ZHAN Si Yan Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijing 100191China Department of Mathematics and Statistics University of Maryland Baltimore CountyBaltimore MD 21250MarylandUSA National Clinical Research Center of Digestive Diseases Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China The Primary Care Unit School of Clinical MedicineUniversity of CambridgeCambridge CB21TNUK Department of Endocrinology and Metabolism Peking University International HospitalBeijing 102206China Department of Clinical Epidemiology and Biostatistics McMaster UniversityHamilton L8S 4L8OntarioCanada Department of Endocrinology and Metabolism Peking University People’s HospitalBeijing 100044China

Objective To evaluate the effects of incretin-based therapies on body weight as the primary outcome,as well as on body mass index(BMI)and waist circumference(WC)as secondary *** Databases including Medline,Embase,the Cochrane Library,and ***(***)were searched for randomized controlled trials(RCTs).Standard pairwise meta-analysis and network meta-analysis(NMA)were both carried *** risk of bias(ROB)tool recommended by the Cochrane handbook was used to assess the quality of *** analysis,sensitivity analysis,meta-regression,and quality evaluation based on the Grading of Recommendations Assessment,Development,and Evaluation(GRADE)were also *** A total of 292 trials were included in this *** with placebo,dipeptidyl-peptidase IV inhibitors(DPP-4 Is)increased weight slightly by 0.31 kg[95%confidence interval(CI):0.05,0.58]and had negligible effects on BMI and *** with placebo,glucagon-like peptide-1 receptor agonists(GLP-1 RAs)lowered weight,BMI,and WC by-1.34 kg(95%CI:-1.60,-1.09),-1.10 kg/m2(95%CI:-1.42,-0.78),and-1.28 cm(95%CI:-1.69,-0.86),*** GLP-1 RAs were more effective than DPP-4 Is in lowering the three ***,the effects of GLP-1 RAs on weight,BMI,and WC were favorable.

关键词： Body mass index Body weight Diabetes mellitus Dipeptidyl-peptidase IV inhibitors Glucagon-like peptide-1 receptor agonists Network meta-analysis Waist circumference

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五味子科比较木材解剖及其系统学意义

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植物分类学报 2007年第2期45卷 191-206页

作者：杨志荣林祁中国科学院植物研究所系统与进化植物学研究中心

在光学显微镜和扫描电镜下观察了南五味子属Kadsura7种21个样品和五味子属Schisandra8种14个样品的木材解剖特征,结果表明次生木质部的导管分子类型、导管-射线间纹孔的排列方式、射线类型、射线细胞形状等性状在科的水平上很稳定,这些... 详细信息

在光学显微镜和扫描电镜下观察了南五味子属Kadsura7种21个样品和五味子属Schisandra8种14个样品的木材解剖特征,结果表明次生木质部的导管分子类型、导管-射线间纹孔的排列方式、射线类型、射线细胞形状等性状在科的水平上很稳定,这些共同特征都支持五味子科Schisandraceae是比较自然的类群。在五味子科中发现木材导管单生、具梯状穿孔板、导管壁具梯形排列的纹孔以及木射线异型等原始性状,支持五味子科在被子植物中的原始地位。此外,该科木材还具有单穿孔板导管、导管次生壁具螺纹加厚、具分隔纤维等较为特化的性状状态,这种性状进化水平的异等级现象,使五味子科表现出不同进化水平性状的镶嵌组合。根据木材解剖性状对五味子科进行UPGMA聚类分析,所得结果显示南五味子属和五味子属在木材解剖特征方面有一定的交叉和重叠,这与分子系统学的结论一致,表明这两个属关系密切,可能起源于共同的祖先。通过比较五味子科与八角科Illiciaceae的木材解剖特征,进一步证明两个科的亲缘关系很近,不支持将五味子科从八角目Illiciales中独立出来成立五味子目Schisandrales的观点。

关键词：八角目五味子科八角科五味子属南五味子属导管 UPGMA

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太钢高炉上下部操作炉型相互作用及其影响

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钢铁 2015年第1期50卷 31-36页

作者：杨志荣山西太钢不锈钢股份有限公司炼铁厂山西太原030003

通过太钢2座4 350 m3高炉生产、操作炉型监控和维护的实践,认识到高炉上下部操作炉型之间有密切的相互作用关系,其对炉缸寿命有一定的影响。高炉上部的操作炉型受到炉腹煤气量、炉身部位耐火材料的选择以及炉身冷却水流向的影响。适当... 详细信息

通过太钢2座4 350 m3高炉生产、操作炉型监控和维护的实践,认识到高炉上下部操作炉型之间有密切的相互作用关系,其对炉缸寿命有一定的影响。高炉上部的操作炉型受到炉腹煤气量、炉身部位耐火材料的选择以及炉身冷却水流向的影响。适当的炉腹煤气量、减少冷却板与砖衬间可能形成的窜气通道、冷却水横向分段、分区冷却有助于形成合理的上部操作炉型。炉身操作炉型与渣皮厚度具有相互作用关系,风口以上操作炉型对炉缸炉底的侵蚀和结厚也存在相互作用关系。通过维持炉芯死焦堆透气透液性、高炉炉身硬质压入以及钒钛矿护炉等措施,维持合理的上、下部操作炉型,改善了炉况顺行和操作指标,同时减缓炉缸侧壁的侵蚀。

关键词：高炉操作炉型相互作用炉缸长寿

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中国北方农牧交错带东南部环境考古研究

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干旱区地理 2000年第4期23卷 320-325页

作者：杨志荣湖南师范大学国土学院长沙410006

详细分析了中国北方农牧交错带东南部的西辽河流域及达来诺尔湖区新石器时代以来区域考古文化特征的变化及其与自然环境演变的关系，指出自新石器时代以来，区域考古文化特征有过三次明显的“庄变”，即３０００ａＢＰ由农业文化跃变... 详细信息

详细分析了中国北方农牧交错带东南部的西辽河流域及达来诺尔湖区新石器时代以来区域考古文化特征的变化及其与自然环境演变的关系，指出自新石器时代以来，区域考古文化特征有过三次明显的“庄变”，即３０００ａＢＰ由农业文化跃变为游牧文化或半农半牧文化；１１００ａＢＰ前由牧业文化以变为农业文化以及７５０ａＢＰ由农业文化跃变为牧业文化。论证了三次考古文化特征跃变的原因主要是气候变化。区域考古文化特征的变化也与达来诺尔及大水诺尔湖面升降所反映的水热变化相吻合。

关键词：农牧交错带文化特征跃变气候变化考古文化中国北方古环境

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内蒙古大青山调角海子地区全新世气候与环境重建研究

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生态学报 2001年第4期21卷 538-543页

作者：杨志荣湖南师范大学资源与环境学系长沙410006

以全封闭湖泊调角海子湖相沉积的高分辨率采样为基本分析材料 ,采用孢粉分析、沉积地球化学分析、14 C测年等多种分析手段 ,对调角海子地区全新世气候与环境进行了综合研究。结果表明 :全新世气候与环境演化可划分为 5个阶段 ,其中后两... 详细信息

以全封闭湖泊调角海子湖相沉积的高分辨率采样为基本分析材料 ,采用孢粉分析、沉积地球化学分析、14 C测年等多种分析手段 ,对调角海子地区全新世气候与环境进行了综合研究。结果表明 :全新世气候与环境演化可划分为 5个阶段 ,其中后两个阶段又可分为 3个亚段 ;全新世大暖期的时代为 94 0 0～ 380 0 a BP;全新世大暖期具有二分性 ;690 0～630 0 a BP为全新世气候最适宜的鼎盛期 ,当时气温比现在高 2～ 3℃ ,降水量至少高于现代 1 50～ 2 0 0 mm,植被为针阔叶混交林。

关键词：大青山全新世环境重建内蒙古气候重建

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美国两房优先级机构债券的价值

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经济理论与经济管理 2009年第5期29卷 55-61页

作者：杨志荣中企国际建设发展集团有限公司北京100101

房利美和房地美现已处于经济衰退、流动性陷阱、技术性破产和利差收窄的困境,其偿还美国财政部购买的MBS尚有风险,偿还优先次序还排在MBS之后的优先级机构债券的价值实际已经趋于零。

关键词：次贷危机信用链住房抵押贷款债券 MM定理

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Comparative effectiveness and safety of 32 pharmacological interventions recommended by guidelines for coronavirus disease 2019:a systematic review and network meta-analysis combining 66 trials

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Chinese Medical Journal 2021年第16期134卷 1920-1929页

作者： Shan-Shan Wu Qing-Xin Zhou Xue-yang Zeng Jing-Xue Zhang zhi-rong yang Qing-Qing yang Zi-Lu Zhang Ya-Hong Chen Feng Sun Si-Yan Zhan Department of Epidemiology and Biostatistics School of Public HealthPeking University Health Science CentreBeijing 100191China Department of Clinical Epidemiology and EBM Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China National Clinical Research Center of Digestive Diseases Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China Primary Care Unit Department of Public Health and Primary CareSchool of Clinical MedicineUniversity of CambridgeCambridge CB18RNUK Department of Clinical Epidemiology and Biostatistics McMaster UniversityHamilton L8S4K1Canada Department of Respiratory and Critical Care Medicine Peking University Third HospitalBeijing 100191China.

Background:The global pandemic coronavirus disease 2019(COVID-19)has become a major public health problem and presents an unprecedented ***,no specific drugs were currently *** study aimed to evaluate the comparative efficacy and safety of pharmacological interventions in patients with ***:Medline,Embase,the Cochrane Library,and *** were searched for randomized controlled trials(RCTs)in patients infected with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)/***-effects network metaanalysis within the Bayesian framework was performed,followed by the Grading of Recommendations Assessment,Development,and Evaluation system assessing the quality of *** primary outcome of interest includes mortality,cure,viral negative conversion,and overall adverse events(OAEs).Odds ratio(OR)with 95%confidence interval(CI)was calculated as the measure of effect ***:Sixty-six RCTs with 19,095 patients were included,involving standard of care(SOC),eight different antiviral agents,six different antibiotics,high and low dose chloroquine(CQ_HD,CQ_LD),traditional Chinese medicine(TCM),corticosteroids(COR),and other *** with SOC,a significant reduction of mortality was observed for TCM(OR=0.34,95%CI:0.20–0.56,moderate quality)and COR(OR=0.84,95%CI:0.75–0.96,low quality)with improved cure rate(OR=2.16,95%CI:1.60–2.91,low quality for TCM;OR=1.17,95%CI:1.05–1.30,low quality for COR).However,an increased risk of mortality was found for CQ_HD ***(OR=3.20,95%CI:1.18–8.73,low quality).TCM was associated with decreased risk of OAE(OR=0.52,95%CI:0.38–0.70,very low quality)but CQ_HD(OR=2.51,95%CI:1.20–5.24)and interferons(IFN)(OR=2.69,95%CI:1.02–7.08)*** with very low quality were associated with an increased ***:COR and TCM may reduce mortality and increase cure rate with no increased risk of OAEs compared with standard ***_HD might increase the risk of ***,IFN,and o

关键词： SARS-CoV-2 COVID-19 Pharmacological intervention Network meta-analysis Effectiveness Safety

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