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Discovery of Precambrian thick black mudstones and its implication for hydrocarbon exploration in the southwest Tarim Basin

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Petroleum Research 2018年第2期3卷 124-131页

作者： Guangyou Zhu Dedao Du Weiyan chen Qisen Sun Tingting Li Zhiyao Zhang zhiyong chen PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China

Due to deep burial of Precambrian in Tarim Basin,no breakthrough in the hydrocarbon exploration has been achieved from these strata,and development of high-quality source rocks is also *** than 30 exploratory wells have been drilled in the southwest Tarim Basin and the pediment region of Kunlun Mountains with a total area of more than 100103 *** some marine oil/gas fields such as Hetianhe,Bashituopu,Yubei and Luosi 2 have been discovered,the Cambrian or Ordovician source rocks have not been drilled,and hydrocarbon source still remain ***,a set of thick black shales and mudstones has been found in the southwest Tarim *** total thickness of mudstones is more than 140 m,and the total organic carbon mainly ranges from 0.6%to 1.9%with an average of 1.0%.Tmax is from 490C to 520C,equivalent to Ro from 1.99%to 2.99%.Pyrites are very rich in *** to stratigraphic contact relationship and isotopic chronology,this mudstone may have the age of more than 517 Ma,and is tentatively named as the“Western Kunlun black rock series”.Through the plate tectonic analysis,this set of thick black mudstones is possibly distributed widely in the southwest Tarim Basin,and its formation may be controlled by the *** set of black mudstones may be an important source rocks in the southwest Tarim Basin,which suggest that the Precambrian-Cambrian strata in Tarim Basin has geological conditions for hydrocarbon *** discovery of the black thick mudstones in the southwest Tarim Basin will promote hydrocarbon exploration in the deep and ultra-deep strata of the Tarim Basin.

关键词： The black rock series High-quality source rocks Precambrian TOC Tmax Southwest tarim basin

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2015—2021年常州市大气PM_(2.5)暴露对人群超额死亡的风险评估

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实用预防医学 2024年第6期31卷 641-645页

作者：陈志永易仁玲陈小岳谈立峰王珂常州市疾病预防控制中心江苏常州213022 南京医科大学公共卫生学院江苏南京211166

目的评估2015—2021年常州市大气PM_(2.5)暴露对人群超额死亡的风险。方法收集全市人口死因、环境空气质量、气象等监测资料,采用广义相加模型分析大气PM_(2.5)对人群死亡的影响,从而估算因PM_(2.5)暴露导致的人群超额死亡数。结果2015... 详细信息

目的评估2015—2021年常州市大气PM_(2.5)暴露对人群超额死亡的风险。方法收集全市人口死因、环境空气质量、气象等监测资料,采用广义相加模型分析大气PM_(2.5)对人群死亡的影响,从而估算因PM_(2.5)暴露导致的人群超额死亡数。结果2015—2021年常州市大气PM_(2.5)浓度每增加10μg/m3时,人群非意外死亡、循环系统疾病死亡和呼吸系统疾病死亡风险分别增加0.71%(95%CI:0.36%~1.05%)、0.91%(95%CI:0.37%~1.46%)和1.14%(95%CI:0.16%~2.13%)。按照WHO指导值,常州市大气PM_(2.5)浓度超标天数为2469 d,因PM_(2.5)暴露产生的人群非意外超额死亡数为3951人,占非意外总死亡人数比例为2.23%,2021年超额死亡数比2015年减少37.86%。其中,循环系统和呼吸系统疾病超额死亡数分别为2004人(2.90%)、725人(3.95%)。结论2015—2021年常州市大气PM_(2.5)浓度及其导致的人群超额死亡数均呈现总体下降趋势,大气污染防治措施产生较好的健康收益。

关键词：细颗粒物超额死亡健康风险评估时间序列分析

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射血分数降低型心力衰竭中医证型与BNP、CA125表达水平及心功能的相关性分析

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辽宁中医杂志 2024年第2期51卷 86-90页

作者：车驰田鑫彭双凤王晓琳陈智勇黄婉清李林江西中医药大学江西南昌330006 江西中医药大学附属医院江西南昌330006

目的探讨射血分数降低型心力衰竭(heart failure with reduced ejection fraction,HFrEF)中医证型与脑钠肽(brain natriuretic peptide,BNP)、血清糖类抗原125(CA125)及心功能的相关性。方法对纳入的HFrEF患者进行中医辨证分型,记录各证型患者的心功能分级、左心超声心功能指标、BNP及CA125表达水平,并进行统计分析。结果HFrEF患者不同中医证型之间BNP及CA125差异有统计学意义(P<0.05);不同心功能等级之间BNP差异有统计学意义(P<0.05);BNP、CA125与HFrEF中医证型呈正相关。结论HFrEF患者的中医证型主要分布在阳虚水泛证,BNP及CA125值基本随中医证型气阴两虚证、气虚血瘀证、痰饮阻肺证、阳虚水泛证、心阳虚脱证顺序递增,对于辅助HFrEF的辨证分型有一定参考价值。

关键词：射血分数下降心力衰竭中医证型 CA125 BNP 心功能分级

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Pathology of diabetic myocardiac microangiopathy

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Journal of Geriatric Cardiology 2009年第2期6卷 79-81页

作者： Yiqun Yao Yanmei chen Guang Liu zhiyong Pei General Hospital of PLA Beo＇ing Command Beijing 100700 China

Objective To investigate the cause of high cardiovascular lethality in patients with diabetics mellitus. Methods Sections from autopsied coronary arteries and myocardium of dead patients with non-insulin-dependent diabetics mellitus and 12 dead control subjects were used for histomorphometric studies. Results The coronary atherosclerotic lesion in diabetics patients was not different in severity fi＇om those in controls. Nor was there difference in number ofmyofibers or diameters of myoeardic fibers and *** the capillary density and the ratio of capillary number to myocardic fiber number in diabetics group were significeantly reduced compared with control group（P〈0.0 l）,and the capillary basement membrane in the former was significantly thicker than in the latter（P〈0.01）.Conclision The decrease in number of capillaries and the thickening of basement membrane enhance myocardiac vulnerability to further ischemia and hypoxia,which may undelie high lethality of myocardiopathy in diabetic patients.

关键词： Non-insulin-dependent diabetes mellitus histomorphometry myocardiac microvessels coronary atherosclerosis

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Microstructure/texture evolution maps to optimize hot deformation process of near-α titanium alloy

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Progress in Natural Science:Materials International 2020年第1期30卷 86-93页

作者： Zhixin Zhang Jiangkun Fan Bin Tang Hongchao Kou Jian Wang zhiyong chen Jinshan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical University Baoti Group Ltd. National & Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal Materials Institute of Metal Research Chinese Academy of Sciences

The microstructure/texture evolution(MTE,for short) map and processing map of a new near a titanium alloy Ti65 were constructed in order to investigate the workability and microstructure evolution of hot *** processing map illustrated four domains,two summit domains and two instability *** morphologies of the a phase changed from the spheroidization(α+β region) to the deformed and elongated β grains(near the βtransus temperature Tβ),and then to the obvious dynamic recrystallization(DRX)(β region) with the temperature rising from 930 ℃ to 1140℃.Deformation in the α+β field mainly generated the texture component with [0001]or [0223] parallel to radial directions(RDs).While deformation in the β phase field formed two types of texture component with [0001] parallel to RDs and [2110] parallel to compression *** optimized processing map was summarized by overlaying the macro-instability map on the original processing map,and the instability domain of Ti65 alloy was confirmed in the area with the strain rate higher than 0.01 s-1.

关键词： Titanium alloy Hot deformation Deformation mechanism Microstructure evolution Texture

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Determination of dietary copper requirement by the monoamine oxidase activity in kidney of broilers from 1 to 21 days of age

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Animal Nutrition 2022年第1期8卷 227-234页

作者： Yun Hu zhiyong chen Lin Lu Liyang Zhang Tao Liu Xugang Luo Xiudong Liao Poultry Mineral Nutrition Laboratory College of Animal Science and TechnologyYangzhou UniversityYangzhou225000China Mineral Nutrition Research Division State Key Laboratory of Animal NutritionInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing100193China Biochemistry Department Case Western Reserve UniversityCleveland44106USA

The current dietary copper(Cu)requirement(8 mg/kg)of broilers is mainly based on growth,hemoglobin concentration,or hematocrit,which might not be the most sensitive indices to evaluate dietary Cu requirements of *** present study was carried out to estimate dietary Cu requirements of broilers fed a conventional corn-soybean meal diet from 1 to 21 d of age using biochemical or molecular biomarkers.A total of 3841-d-old Arbor Acres male broilers were randomly allocated to 1 of 6 treatments with 8 replicates and fed a Cu-unsupplemented corn-soybean meal basal diet containing 5.17 mg Cu/kg by analysis and the basal diet supplemented with 3,6,9,12 or 15 mg Cu/kg as CuSO4,5H2O for 21 *** analysis was performed to estimate the optimal dietary Cu level using the broken-line *** supplemental Cu level affected(P0.05)on the growth performance,Cu contents in heart,kidney,pancreas and spleen,Cu-and zinc-containing superoxide dismutase(CuZnSOD)activity and ceruloplasmin content in serum,CuZnSOD and cytochrome c oxidase(COX)activities and ceruloplasmin,CuZnSOD,MAO A,MAO B,COX 4I1 and COX 1 mRNA and protein expressions in the above tissues of *** dietary supplemental Cu levels increased,Cu contents in serum and liver increased linearly(P<0.05),but kidney MAO activity decreased linearly and quadratically(P<0.05).The estimated dietary Cu requirement based on the fitted broken-line model(P=0.035)of kidney MAO activity was 11.30 mg/*** conclusion,kidney MAO activity is a new and sensitive criterion to evaluate the dietary Cu requirement of broilers,and the dietary Cu requirement was 11.30 mg/kg for broilers fed the conventional corn-soybean meal diet from 1 to 21 d of age,which is higher than the current National Research Council(NRC)Cu requirement(8 mg/kg)of broilers.

关键词： Copper Monoamine oxidase Requirement Broilers

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The Major Controlling Factors and Different Oolitic Shoal Reservoir Characteristics of the Triassic Feixianguan Formation,Eastern Longgang Area,NE Sichuan Basin,SW China

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Acta Geologica Sinica(English Edition) 2021年第3期95卷 895-908页

作者： GU Yifan JIANG Yuqiang LEI Xiaohua chen zhiyong ZHOU Lu FU Yonghong JIANG Zengzheng School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China Department of Geology University of ReginaReginaSaskatchewanSK S4S 0A2Canada Northeastern Sichuan Oil and Gas District PetroChina Southwest Oil and Gas Field CompanyDazhouSichuan 635000China Chongqing Gas Field PetroChina Southwest Oil and Gas Field CompanyChongqing 400021China Sichuan Geotech Science and Technology Ltd. Chengdu 610041China

Based on comprehensive analyses of occurrence,petrological observation,pore structure and geochemistry,the different reservoir characteristics and reservoir evolutionary pathways between different oolitic shoal reservoir types of the Feixianguan Formation on the west side of the Kaijiang-Liangping Trough have been *** exist three stages of high-energy slope break belts in the Feixianguan period,the corresponding three stages of oolitic shoals gradually migrating in the direction of the *** types of oolitic shoal reservoirs,namely,residual-oolitic dolomite,mold-oolitic dolomite and sparry oolitic limestone,were formed during sedimentary-diagenetic evolution,the pore types being intergranular dissolved pore,mold pore(or intragranular dissolved pore)and residual intergranular pore,*** petrology,physical properties and pore structure of the different types of oolitic shoal reservoirs are quite ***-oolitic dolomite reservoirs have the best quality,while sparry oolitic limestone reservoirs have the *** with analyses of trace elements,rare earth elements and carbon-oxygen isotopes,it is suggested that the formation of residual-oolitic dolomite reservoirs is jointly controlled by penesaline seawater seepage-reflux dolomitization and hydrothermal ***-pore oolitic dolomite reservoirs are controlled by penesaline seawater seepage-reflux dolomitization and meteoric water *** burial dissolution of organic acid not only further improves the reservoir qualities of previously formed oolitic dolomite reservoirs,but also preserves residual intergranular pores in the sparry oolitic limestone reservoirs.

关键词： oolitic shoal reservoir evolution geochemical characteristics Triassic System Feixianguan Formation Sichuan Basin

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Stability of water yield in watersheds

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Science China Earth Sciences 2024年第2期67卷 483-496页

作者： Yu YAN zhiyong LIU Xiaohong chen Liyan HUANG Center for Water Resources and Environment School of Civil EngineeringSun Yat-Sen UniversityGuangzhou510275China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai519082China

The hydrological system of a watershed is intricately influenced by both underlying characteristics and climate *** the variability in water yield is essential for effective water resources management and water security in the context of changing *** this study,we adopted the Budyko framework and leveraged simulations from the CMIP6 model to investigate the compensation effects of climate and underlying characteristics on watershed water *** on Taylor expansion and Budyko framework,we estimated the sensitivity of watershed water yield to climate and underlying characteristics(the first-and second-order partial derivatives).By combining external watershed characteristics(e.g.,water yield ratios and underlying characteristics)with internal sensitivity coefficients,this study further used vine copula and principal component analysis to quantify the stability of watershed water *** findings show:(1)Water-yield changes related to underlying characteristics could be offset by climate-related water-yield changes across all climate zones,maintaining the water yield ratio steady(i.e.,the compensation effects).(2)However,global watersheds will turn more sensitive to underlying characteristics and less sensitive to climate variation in the *** climate-and underlying-related sensitivities increase in watersheds with arid climates.(3)The stability of watershed water yield will gradually diminish in the *** 1901–1950to 2051–2100,the global stability of 280 watersheds drops from 0.054 to 0.021(i.e.,stability index identified by the joint probability).Particularly,the largest change in stability of water yield reaches-0.347±0.18 in arid *** semi-arid,semihumid,and humid regions,the changes are-0.039±0.010,-0.028±0.005,and-0.005±0.002,*** findings provide a reference for the future sustainable water resources development under climate change,highlighting the vulnerability of the water resources in ari

关键词： Hydrological system stability Compensation effects on water yield Sensitivities Budyko-Fu decomposition framework Global watersheds

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A methodology for laser tool setters calibration and its precise mathematical model

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Chinese Journal of Aeronautics 2024年第7期37卷 564-581页

作者： Tao FANG Zixi FANG Ze Zhong chen zhiyong CHANG School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China Gina Cody School of Engineering and Computer Science Concordia UniversityMontrealQuebec H3G 1M8Canada Changsha Optimum CNC Corporation Changsha 410221China Institute for Aero-engine Smart Assembly of Shaanxi Province Xi’an 710072China

On-machine tool setting is a pivotal approach in achieving intelligent manufacturing,and laser tool setters have become a crucial component of smart machine *** tool setters play a crucial role in precisely measuring the dimensions of cutting tools during the part machining process,focusing on tool length and *** a measuring instrument,the positions of the laser axis of the laser tool setter need to be accurately calibrated before ***,in actual calibration scenarios,traditional calibration methods face challenges due to installation errors in the tool setter and geometric errors in the measuring *** address this issue,this study proposes a novel calibration ***,the calibration mechanism of the laser beam axis is *** on the accurate mathematical model of the laser beam and the measuring rod,and using the polygon clipping algorithm,the mathematical mechanism of the laser tool setter’s work is ***,a novel method is introduced to calculate the compensation distance between the laser beam reference point and the rod bottom center point at each moment during ***,by utilizing the kinematic chain of the tool setter calibration system,a new calibration method is developed to accurately calibrate the position of the laser beam axis in the machine tool coordinate ***,the accuracy of the calibration method is verified through simulation experiments and calibration *** method improves the calibration accuracy of the tool setter,and the mathematical model of the laser tool setter can be extended to the measurement of tools,thereby improving the precision of tool *** research significantly improves the efficient production performance of smart machine tools.

关键词： On-machine tool setting Smart machine tools Mathematical model Calibration method Laser tool sette

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Velocity-free compact rigid flock control with input saturations 25th

Velocity-free compact rigid flock control with input saturat...

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第25届中国控制与决策会议

作者： Ming-Can Fan zhiyong chen Hai-Tao Zhang the Department of Control Science and Engineering and State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology the School of Electrical Engineering and Computer Science University of Newcastle Callaghan NSW 2308 Australia

ISBN: (纸本)9781467355339

It is often encountered in industrial multi-agent systems the unavailability of velocity sensors or the imprecise measurements of velocities. This work addresses the velocityfree flock control problem with input saturation. Using algebraic graph theory and Barbalat’s Lemma, we prove that the algorithm guarantees the system to converge to a rigid flock behavior where all the agents in the group move with the same velocity. Moreover, the flock will converge to a prescribed tight formation which minimizes all agents’ global potentials. Finally, the proposed flock control method are examined by numerical simulations to show its effectiveness.

关键词： Flocking Multi-agent systems Velocity-free Input saturations

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