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Chinese Science Bulletin 2014年第8期59卷 766-775页

作者： zhiyong gao Hao Liu Hongliang Wang Ning Li Daojie Wang Yuwei Song Yuchen Miao Chunpeng Song State Key Laboratory of Cotton Biology Laboratory of Plant Stress Biology Department of Biology Henan University

The autonomous Mutator(Mu)transposon in maize(Zea mays L.)lines 115F,330I,and 715D were crossed with inbred lines B73,Mo17,97108,and H9-21,M1were self-pollinated to establish the Mu insertion-mutagenized M2seeds pool and The M2plants encompassed a large amount of biological variation relevant to improving agronomy traits by observed in the *** we statistically analyzed these candidate *** drought stress,we screened seedlings at 3-leaf stage by using the infrared thermography,and successfully got 108 droughtinsensitive and 121 drought-sensitive candidate mutants from more than 38,000 lines,which temperature were significant different with *** candidate mutants were primarily analyzed by infrared thermography,chlorophyll fluorescence,leaf water losing,photosynthetic characteristics,content of soluble sugars,soluble protein,and proline *** selected mutants were cloned by MuTAIL–PCR *** we provide the better genetic materials for research on maize breeding for drought tolerance.

关键词：干旱胁迫玉米育种突变体基因突变红外热成像鉴定筛选群体

Particle-in-cell simulation for effect of anode temperature on discharge characteristics of a Hall effect thruster

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Plasma Science and Technology 2018年第12期20卷 96-106页

作者： Hong LI Xingyu LIU zhiyong gao Yongjie DING Liqiu WEI Daren YU Xiaogang WANG Plasma Propulsion Laboratory Harbin Institute of TechnologyHarbin 150001People's Republic of China AECC Harbin Dongan Engine(Group)Corporation Ltd Harbin 150066People's Republic of China Department of Physics Harbin Institute of TechnologyHarbin 150001People's Republic of China

Propellant gas flow has an important impact on the ionization and acceleration process of Hall effect thrusters （HETs）. In this paper, a particle-in-cell numerical method is used to study the effect of the anode temperature, i.e., the flow speed of the propellant gas, on the discharge characteristics of a HET. The simulation results show that, no matter the magnitude of the discharge voltage, the calculated variation trends of performance parameters with the anode temperature are in good agreement with the experimental ones presented in the literature. Further mechanism analysis indicates that the magnitude of the electron temperature is responsible for the two opposing variation laws found under different discharge voltages. When the discharge voltage is low, the electron temperature is low, and so is the intensity of the propellant ionization; the variation of the thruster performance with the anode temperature is thereby determined by the variation of the neutral density that affects the propellant utilization efficiency. When the discharge voltage is high, the electron temperature is large enough to guarantee a high degree of the propellant utilization no matter the magnitude of the anode temperature. The change of the thruster performance with the anode temperature is thus dominated by the change of the electron temperature and consequently the electron-neutral collisions as well as the electron cross-field mobility that affect the current utilization efficiency.

关键词： Hall effect thruster anode temperature neutral flow discharge characteristics particle-in-cell simulation

Risk Factors for Norovirus Outbreaks in Schools and Kindergartens—Beijing Municipality,China,July 2017–June 2022

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China CDC weekly 2024年第33期6卷 841-845页

作者： Baiwei Liu Yu Wang Mengdi Tan Boran E Dongxue Zhang Hanqiu Yan Quanyi Wang Daitao Zhang Lei Jia zhiyong gao Institute for Infectious Disease and Endemic Disease Control Beijing Center for Disease Prevention and ControlBeijingChina School of Public Health China Medical UniversityShenyang CityLiaoning ProvinceChina School of Public Health Capital Medical UniversityBeijingChina Department of Endocrinology Beijing Shijitan HospitalCapital Medical UniversityBeijingChina

What is already known on this topic?Norovirus is the leading cause of global acute gastroenteritis *** outbreaks mainly occur in schools and kindergartens in China,always causing public health *** is added by this report?Conditional logistic regression method was used to analyze the risk factors for norovirus outbreaks in schools and kindergartens,and found that students vomiting at school or kindergarten,case activity in public areas,and the first case’s classroom less than 5 meters from toilets were risk *** are the implications for public health practice?Effective measures to address these factors can help reduce the risk of norovirus outbreaks in schools and kindergartens.

关键词： let garten schools

Norovirus Detection in Environmental Samples from Norovirus Outbreaks in Schools and Kindergartens—Beijing Municipality,China,October–December 2020

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China CDC weekly 2021年第33期3卷 702-705页

作者： Baiwei Liu Yu Wang Lei Jia Yi Tian Xiaoli Wang Shuaibing Dong Lingyu Shen zhiyong gao Quanyi Wang Beijing Research Center for Preventive Medicine BeijingChina Beijing Center for Disease Control and Prevention BeijingChina

What is already known on this topic?The norovirus has often caused outbreaks in schools and kindergartens,but minimal research has been performed on environmental contamination during norovirus outbreaks in schools and *** is added by this report?This report conveys the norovirus detection rates and viral loads in different environmental sites in 45 norovirus outbreaks in Beijing Municipality from October to December *** are the implications for public health practice?The evidence presented here can instruct professionals and the public to sample and disinfect key locations of the environment purposefully when responding to norovirus outbreaks.

关键词： instru schools garten

Lithofacies paleogeography restoration and its significance of Jurassic to Lower Cretaceous in southern margin of Junggar Basin,NW China

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Petroleum Exploration and Development 2022年第1期49卷 78-93页

作者： gao zhiyong SHI Yuxin FENG Jiarui ZHOU Chuanmin LUO Zhong Petroleum Geology Research and Laboratory Center PetroChina Research Institute of Petroleum Exploration and DevelopmentBeijing 100083China State Key Laboratory of Enhanced Oil Recovery Beijing 100083China

In view of the difficulties in the study of lithofacies paleogeography and the low reliability of the distribution range of sedimentary sand bodies in the prototype basin caused by less deep drilling, complex seismic imaging and low degree of exploration in the southern margin of Junggar Basin, NW China. A new method based on the source to sink idea was used to restore lithofacies paleogeography and predict glutenite distribution. In the restoration, apatite fission track age was used to define range and uplift time of macro-provenance;the range of provenance area and the migration process of lake shoreline were restored based on the quantitative relationship between gravel diameter and transportation distance, tectonic shortening and other geological parameters;drilling cores and field outcrop sedimentary structures were analyzed, and a series of maps of lithofacies paleogeographic evolution and distribution range of glutenite bodies were compiled. It is concluded that from Early Jurassic to Early Cretaceous, in the southern margin of Junggar Basin, the provenance area gradually expanded from south to north, the lake basin expanded, shrunk and expanded, and the paleoclimate changed from humid to drought to humid. The western section always had proximal fan delta deposits from the southern ancient Tianshan provenance developed, and in the middle and eastern sections, the provenance areas evolved from far source to near source, mainly river-delta, braided delta, fan delta and other sediments developed. The boundary between provenance areas of the western and middle sections is speculated to be Hongche fault zone. In an angle open to the northwest with the current basin edge line, the restored ancient lake shoreline controlled the heterogeneity of reservoirs in the delta plain belt and delta front belt on its both sides. The ancient lake shoreline, current stratigraphic denudation line and current basin margin line limit the types and scope of favorable ***

关键词： southern margin of Junggar Basin deep lower assemblage Jurassic Cretaceous provenance lake shoreline lithofacies paleogeography favorable sandbody distribution

Asymptomatic Norovirus Infection Among Children in Kindergartens and Primary Schools—Beijing Municipality,China,2021

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China CDC weekly 2023年第8期5卷 171-175页

作者： Qingrui Wu Xiuxia Wei Jianjun Zhang Zhenjiang Xin Xiaoxing Yang Ling Zhang Meng Qin Xiaogen Dong Hanqiu Yan zhiyong gao Fengtai District Center for Disease Control and Prevention BeijingChina Fangzhuang Community Health Service Center BeijingChina Beijing Center for Disease Control and Prevention BeijingChina School of Public Health Capital Medical UniversityBeijingChina

Summary What is already known about this topic?Children in kindergartens and primary schools are the high-incidence groups of norovirus acute ***,asymptomatic norovirus infection among them is seldom *** is added by this report?The norovirus positive rate was 3.48% among asymptomatic children in kindergartens and primary schools in Beijing Municipality in June 2021,the most common genotype was GII.4 Sydney,and no acute gastroenteritis outbreak was reported over the study period.

关键词： acute Sydney infection

Facile one-pot synthesis of a novel all-carbon stair containing dimerized pentalene core from alkyne

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Chinese Chemical Letters 2022年第4期33卷 2047-2051页

作者： Hui Zhao Rakesh Kumar Gupta Wei Zhang Jiong Jia Qun Yu zhiyong gao Guilin Zhuang Dacheng Li Xingpo Wang Chen Ho Tung Di Sun Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringState Key Laboratory of Crystal MaterialsShandong UniversityJi’nan 250100China College of Chemical Engineering and Materials Science Zhejiang University of TechnologyHangzhou 310032China School of Chemistry and Chemical Engineering Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationHenan Normal UniversityXinxiang 453007China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology and School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252000China

The construction of all-carbon molecule frameworks remains challenging. Herein, we report a facile and efficient one-pot synthesis of a novel all-carbon stair containing dimerized pentalene core using inexpensive cyclopropyl alkyne catalyzed by in situ generated Cu(I) from the comproportionation reaction of Cu(II) salt and Cu powder under mild reaction conditions. The reaction proceeds via sequential acetylenic coupling, followed by cyclization and [2 + 2] cycloaddition to directly produce pentalene dimer, which is difficult to access by other established methods. Different mechanistic paths were studied for the pentalene formation using density functional theory, suggesting that the reaction also proceeds through acetylenic coupling followed by cyclization and [2 + 2] cycloaddition. Based on the activation energy barriers, Path 1 has the rate-determining step of 38.63 kcal/mol, which is the most thermodynamically preferred one among the four paths.

关键词： One-pot synthesis Penatlene dimerization Comproportionation reaction Crystal structure Theoretical calculations

Relationship Between Substrate Water Content and Weight Loss,Mycelium Culture Time and Hypsizygus marmoreus Growth Yields

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食用菌学报 2008年第3期15卷 27-30页

作者： gao Junhui FENG zhiyong CHEN Hui Key Laboratory of Applied Mycological Resources and Utilization Ministry of Agriculture the People＇s Republic of China Shanghai Research Center for Edible Fungi Biotechnology and Engineering Key Laboratory of Agricultural Genetics and Breeding of Shanghai Institute of Edible Fungi Shanghai Academy of Agricultural Sciences Shanghai 201106 China

Changes in the weight and water content of the growth substrate at different cultivation times significantly affected Hypsizygus marmoreus growth *** growth yields(132.6~146.3 g per culture) were achieved when the mycelium culture and maturation period was between 80 and 90 days,and the substrate water content was 73%~74%.Physiological maturation of *** mycelium was correlated with the substrate water content.

关键词：水分含量体重菌丝培养时间菇

Action mechanisms of abnormal fluid pressure on physical properties of deep reservoirs: A case study on Jurassic Toutunhe Formation in the southern margin of Junggar Basin, NW China

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Petroleum Exploration and Development 2023年第6期50卷 1398-1410页

作者： gao zhiyong CUI Jinggang FAN Xiaorong FENG Jiarui SHI Yuxin LUO Zhong PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083China College of Geosciences China University of Petroleum(Beijing)Beijing 104900China

Considering the action mechanisms of overpressure on physical changes in skeleton particles of deep reservoir rocks and the differences in physical changes of skeleton particles under overpressure and hydrostatic pressure, the sandstone of the Jurassic Toutunhe Formation in the southern margin of Junggar Basin was taken as an example for physical modeling experiment to analyze the action mechanisms of overpressure on the physical properties of deep reservoirs. (1) In the simulated ultra-deep layer with a burial depth of 6000-8000 m, the mechanical compaction under overpressure reduces the remaining primary pores by about a half that under hydrostatic pressure. Overpressure can effectively suppress the mechanical compaction to allow the preservation of intergranular primary pores. (2) The linear contact length ratio under overpressure is always smaller than the linear contact length ratio under hydrostatic pressure at the same depth. In deep reservoirs, the difference between the mechanical compaction degree under overpressure and hydrostatic pressure shows a decreasing trend, the effect of abnormally high pressure to resist the increase of effective stress is weakened, and the degree of mechanical compaction is gradually close to that under hydrostatic pressure. (3) The microfractures in skeleton particles of deep reservoirs under overpressure are thin and long, while the microfractures in skeleton particles of deep reservoirs under hydrostatic pressure are short and wide. This difference is attributed to the probable presence of tension fractures in the rocks containing abnormally high pressure fluid. (4) The microfractures in skeleton particles under overpressure were mainly formed later than that under hydrostatic pressure, and the development degree and length of microfractures both extend deeper. (5) The development stages of microfractures under overpressure are mainly controlled by the development stages of abnormally high pressure and the magnitude of effect

关键词： abnormally high fluid pressure deep reservoir microfracture physical simulation of diagenesis Jurassic Toutunhe Formation southern margin of Junggar Basin

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流程工业系统信息质量关键控制点的确定方法

计算机集成制造系统 2016年第5期22卷 1323-1328页

作者：高智勇郭城高建民西安交通大学机械制造系统工程国家重点实验室陕西西安710049

为了从海量的集散控制系统信息中挖掘出系统中的关键信息节点,以对流程工业生产中基于系统固有耦合约束关系的信息质量进行评价和控制,避免发生严重的生产安全事故,基于流程工业分布式复杂制造系统的特点,提出一种分布式PageRank算法,... 详细信息

为了从海量的集散控制系统信息中挖掘出系统中的关键信息节点,以对流程工业生产中基于系统固有耦合约束关系的信息质量进行评价和控制,避免发生严重的生产安全事故,基于流程工业分布式复杂制造系统的特点,提出一种分布式PageRank算法,用以确定流程工业系统信息质量关键控制点,在保证精度的同时降低了算法的复杂度,通过实际企业案例验证了方法的有效性和可行性。

关键词：流程工业系统信息质量耦合约束关系分布式PageRank算法