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Two stages power generation test of the hot dry rock exploration and production demonstration project in the Gonghe Basin,northeastern Qinghai-Tibet plateau,China

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China Geology 2024年第3期7卷 409-421页

作者： Er-yong Zhang Dong-guang Wen Gui-ling Wang xian-peng Jin lin-you Zhang Hai-dong Wu Wen-shi Wang Cheng-ming Ye wei Weng Kuan li Jin-sheng Wu xian-chun Tang Chong-yuan Zhang Qing-da Feng Sheng lian li-sha Hu Gui-lin zhu Xing-long Xie Bin Wu Dan Wang Xue Niu Zhao-xuan Niu Dong-lin liu Hui Zhang Wen-hao Xu Shu-qing Yao li Yang Center for Hydrogeology and Environmental Geology Survey China Geological SurveyMinistry of Natural ResourcesTianjin 300304China Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesChina Geological SurveyShijiazhuang 050061China Institute of Exploration Techniques Chinese Academy of Geological SciencesChina Geological SurveyLangfang 065000China Institute of Exploration Engineering China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Institute of Exploration Technology Chinese Academy of Geological SciencesChengdu 611734China Chinese Academy of Geological Sciences China Geological SurveyBeijing 100037China Institute of Geomechanics Chinese Academy of Geological SciencesChina Geological SurveyBeijing 100081China Geoscience Documentation Center China Geological SurveyMinistry of Natural ResourcesBeijing 100083China

The Hot Dry Rock(HDR)is considered as a clean and renewable energy,poised to significantly contribute to the global energy decarbonization *** HDR projects worldwide have accumulated valuable experience in efficient drilling and completion,reservoir construction,and fracture *** 2019,China Geological Survey(CGS)initiated a demonstration project of HDR exploration and production in the Gonghe Basin,aiming to overcome the setbacks faced by HDR *** the ensuing four years,the Gonghe HDR project achieved the first power generation in 2021,followed by the second power generation test in *** establishing the primary well group in the initial phase,two directional wells and one branch well were *** progress was made in successfully constructing the targeted reservoir,realizing inter-well connectivity,power generation and grid connection,implementing of the real-time micro-seismic monitoring.A closed-loop technical validation of the HDR exploration and production was ***,many technical challenges remain in the process of HDR industrialization,such as reservoir fracture network characterization,efficient drilling and completion,multiple fracturing treatment,continuous injection and production,as well as mitigation of induced seismicity and numerical simulation technology.

关键词： Power generation Hot dry rock(HDR) Enhanced geothermal system(EGS) Genesis mechanism Gonghe Basin Directional drilling Reservoir construction Circulation test Induced seismicity Clean energy exploration engineering

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Angular distribution of products in multinucleon transfer reactions

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Chinese Physics C 2024年第10期48卷 193-200页

作者： xian-Kai Le Kuan Fan Feng-zhu Xing Shu-Qing Guo Nan Wang College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Nuclear and Radiation Safety Shenzhen 518060China

A method based on the dinuclear system(DNS)is proposed to describe the angular distribution of products in multinucleon transfer(MNT)*** considering fluctuation effects,the angular distributions of reactions involving^(136)Xe+^(208)Pb,^(136)Xe+^(209)Bi,^(86)Kr+^(166)Er,^(84)Kr+^(209)Bi,and^(84)Kr+^(208)Pb are examined,demonstrating good agreement with experimental ***,the double differential cross-sections(dσ^(2)/dl_(i)dΘand dσ^(2)/dZdΘ)of reactions^(136)Xe+^(208)Pb and^(136)Xe+^(209)Bi are analyzed to explore the mechanism of angular distribution in MNT ***,the optimal angles for detecting N=126 isotopes are determined via an analysis on the influence of proton and neutron numbers of the projectiles on the angular distribution of the N=126 isotopic *** results of this study can provide valuable insights for experimental detection.

关键词： angular distribution multinucleon transfer reaction dinuclear system model neutron-rich nuclei

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Effect of surface modification on the radiation stability of diamond ohmic contacts

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Chinese Physics B 2024年第2期33卷 444-448页

作者：牟恋希赵上熳王鹏原晓芦刘金龙朱志甫陈良贤魏俊俊欧阳晓平李成明 Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China School of Information Engineering Zhengzhou University of TechnologyZhengzhou 450044China State Key Laboratory of Intense Pulsed Radiation Simulation and Effect Northwest Institute of Nuclear TechnologyXi’an 710024China

The ohmic contact interface between diamond and metal is essential for the application of diamond *** modification can significantly affect the contact performance and eliminate the interface polarization ***,the radiation stability of a diamond detector is also sensitive to surface *** this work,the influence of surface modification technology on a diamond ohmic contact under high-energy radiation was *** radiation,the specific contact resistivities(ρc)between Ti/Pt/Au-hydrogen-terminated diamond(H-diamond)and Ti/Pt/Au-oxygenterminated diamond(O-diamond)were 2.0×10^(-4)W·cm^(2) and 4.3×10^(-3)Wcm^(2),*** 10 MeV electron radiation,the ρc of Ti/Pt/Au H-diamond and Ti/Pt/Au O-diamond were 5.3×10^(-3)W·cm^(2)and 9.1×10^(-3)W·cm^(2),*** rates of change of ρc of H-diamond and O-diamond after radiation were 2550%and 112%,*** electron radiation promotes bond reconstruction of the diamond surface,resulting in an increase in ρc.

关键词： single crystal diamond ohmic contact surface modification electron radiation

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Promotion effect of FOXCUT as a microRNA sponge for miR-24-3p on progression in triple-negative breast cancer through the p38 MAPK signaling pathway

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Chinese Medical Journal 2024年第1期137卷 105-114页

作者： Xiafei yu Fangze Qian Xiaoqiang Zhang Yanhui zhu Gao He junzhe Yang xian Wu Yi Zhou li Shen Xiaoyue Shi Hongfei Zhang Xiao’an liu Department of Breast Surgery The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China

Background:Triple-negative breast cancer(TNBC)is a type of highly invasive breast cancer with a poor *** to new research,long noncoding RNAs(lncRNAs)play a significant role in the progression of *** the role of lncRNAs in breast cancer has been well reported,few studies have focused on *** study aimed to explore the biological function and clinical significance of forkhead box C1 promoter upstream transcript(FOXCUT)in triple-negative breast ***:Based on a bioinformatic analysis of the cancer genome atlas(TCGA)database,we detected that the lncRNA FOXCUT was overexpressed in TNBC tissues,which was further validated in an external cohort of tissues from the General Surgery Department of the First Affiliated Hospital of Nanjing Medical *** functions of FOXCUT in proliferation,migration,and invasion were detected in vitro or in *** assays and RNA immunoprecipitation(RIP)were performed to reveal that FOXCUT acted as a competitive endogenous RNA(ceRNA)for the microRNA miR-24-3p and consequently inhibited the degradation of ***:lncRNA FOXCUT was markedly highly expressed in breast cancer,which was associated with poor prognosis in some *** of FOXCUT significantly inhibited cancer growth and metastasis in vitro or in ***,FOXCUT competitively bounded to miR-24-3p to prevent the degradation of p38,which might act as an oncogene in breast ***:Collectively,this research revealed a novel FOXCUT/miR-24-3p/p38 axis that affected breast cancer progression and suggested that the lncRNA FOXCUT could be a diagnostic marker and therapeutic target for breast cancer.

关键词： Triple negative breast neoplasms RNA,long noncoding FOXCUT miR-24-3p p38 MAPK signaling pathway Disease progression

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Design and implementation of low-cost geomagnetic field monitoring equipment for high-density deployment

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Applied Geophysics 2024年第3期21卷 505-512,618页

作者： Sun lu-Qiang Bai xian-Fu Kang Jian Zeng Ning zhu Hong Zhang Ming-Dong Tianjin Earthquake Agency Tianjin 300201China yunnan Earthquake Agency Kunming 650224China

The observation of geomagnetic field variations is an important approach to studying earthquake *** 1987,the China Earthquake Administration has explored this seismomagnetic *** particular,they studied local magnetic field anomalies over the Chinese mainland for earthquake *** to the years of research on the seismomagnetic relationship,earthquake prediction experts have concluded that the compressive magnetic effect,tectonic magnetic effect,electric magnetic fluid effect,and other factors contribute to preearthquake magnetic ***,this involves a small magnitude of magnetic field *** is difficult to relate them to the abnormal changes of the extremely large magnetic field in regions with extreme earthquakes owing to the high cost of professional geomagnetic equipment,thereby limiting large-scale ***,it is difficult to obtain strong magnetic field changes before an *** Tianjin Earthquake Agency has developed low-cost geomagnetic field observation equipment through the Beijing–Tianjin–Hebei geomagnetic equipment test *** new system was used to test the availability of equipment and determine the findings based on big data..

关键词： geomagnetic field earthquake prediction low cost high density big data

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公铁两用运输车连挂冲击下的纵向载荷传递规律研究

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振动工程学报 2024年第2期37卷 276-285页

作者：董浩李映辉祝笈陆强张显峰刘鹏飞成都大学高等研究院四川成都610106 中车眉山车辆有限公司科创中心四川眉山620032 西南交通大学力学与航空航天学院四川成都611756 石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室河北石家庄050043

针对中国拟自助研发设计的公铁两用运输车,在编组连挂时由车钩经转向架传递至车体的载荷,其传递路径及规律尚不明确的问题,进行了试验测试与仿真研究。该车型的转向架在纵向能传递载荷的部件包括牵引板与抗蛇行减振器装置,需掌握载荷传... 详细信息

针对中国拟自助研发设计的公铁两用运输车,在编组连挂时由车钩经转向架传递至车体的载荷,其传递路径及规律尚不明确的问题,进行了试验测试与仿真研究。该车型的转向架在纵向能传递载荷的部件包括牵引板与抗蛇行减振器装置,需掌握载荷传递路径及其大小以便为后续结构部件的强度考核提供支撑。试验中,对转向架可能传递纵向载荷的部件进行了布点和载荷测试。仿真研究中,根据铁道车辆多体动力学理论与建模方法,建立了3车体4转向架的编组模型,模拟碰撞机车为含质量与速度的简化质量块。建立了抗蛇行减振器装置的力学模型,其力学结构为阻尼与刚度的串联模型;而构架到车体的纵向连接部件为牵引板⁃抗蛇行减振器装置的并联结构。运用多体动力学软件SIMPACK进行求解。结果表明:车钩与牵引板所受纵向载荷会随着碰撞体冲击速度的增大而增大,仿真结果略小于试验结果,但规律一致,且牵引板所受冲击载荷小于车钩载荷;而抗蛇行减振器装置结点几乎不受纵向载荷,与牵引板受载相比可忽略不计。由试验与仿真结果对比分析,明确了冲击载荷经车钩传递至车体时,几乎完全通过转向架上的牵引板传递,抗蛇行减振器装置作用很小,相关结果能够用于该车结构的优化设计及为部件强度校核提供载荷谱。

关键词：车辆系统动力学公铁两用运输车连挂冲击载荷传递路径

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Proppant transport in rough fracture networks using supercritical CO_(2)

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Petroleum Science 2024年第3期21卷 1852-1864页

作者： Yong Zheng Meng-Meng Zhou Ergun Kuru Bin Wang jun Ni Bing Yang Ke Hu Hai Huang Hai-zhu Wang School of Petroleum Engineering Xi'an Shiyou UniversityXian710065ShaanxiChina Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery Xi'an710075ShaanxiChina State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing2249China School of Mining and Petroleum Engineering University of AlbertaEdmontonTG2W2AlbertaCanad Shaanxi Yanchang Petroleum(Group)Co. Ltd.Xi'an710075ShaanxiChina

Proppant transport within fractures is one of the most critical tasks in oil,gas and geothermal reservoir stimulation,as it largely determines the ultimate performance of the operating *** transport in rough fracture networks is still a relatively new area of research and the associated transport mechanisms are still *** this study,representative parameters of rough fracture surfaces formed by supercritical CO_(2) fracturing were used to generate a rough fracture network model based on a spectral synthesis *** fluid dynamics(CFD)coupled with the discrete element method(DEM)was used to study proppant transport in this rough fracture *** reveal the turning transport mechanism of proppants into branching fractures at the intersections of rough fracture networks,a comparison was made with the behavior within smooth fracture networks,and the effect of key pumping parameters on the proppant placement in a secondary fracture was *** results show that the transport behavior of proppant in rough fracture networks is very different from that of the one in the smooth fracture *** turning transport mechanisms of proppant into secondary fractures in rough fracture networks are gravity-driven sliding,high velocity fluid suspension,and fracture structure *** the same injection conditions,supercritical CO_(2)with high flow Reynolds number still has a weaker ability to transport proppant into secondary fractures than *** of the supercritical CO_(2)needs to be increased beyond a certain value to have a significant effect on proppant carrying,and under the temperature and pressure conditions of this paper,it needs to be increased more than 20 times(about 0.94 m Pa s).Increasing the injection velocity and decreasing the proppant concentration facilitates the entry of proppant into the branching fractures,which in turn results in a larger stimulated reservoir *** results help to understand the pro

关键词： Reservoir stimulation CCUS Rough fracture network Supercritical CO_(2) Proppanttransport

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平原城市土地集约利用分类识别研究——基于江汉平原21个市县的熵权法评价研究

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西部人居环境学刊 2024年第4期39卷 122-128,142页

作者：林颖张娴卢有朋祝贺华中科技大学建筑与城市规划学院湖北省城镇化工程技术研究中心自然资源部城市仿真重点实验室北京建筑大学建筑与城市规划学院

土地集约利用评价作为重要的土地资源管理工具,对于土地资源的可持续利用和促进经济、生态、社会的协调发展具有重要意义。本文从宏观尺度进行城市土地集约利用情况的分类识别与横向比较研究,以江汉平原地区21个城市中心城区为研究对象... 详细信息

土地集约利用评价作为重要的土地资源管理工具,对于土地资源的可持续利用和促进经济、生态、社会的协调发展具有重要意义。本文从宏观尺度进行城市土地集约利用情况的分类识别与横向比较研究,以江汉平原地区21个城市中心城区为研究对象,通过遥感解析与地理信息数据分析方法批量识别城市建设用地,在此基础上,构建多层次多维度的土地集约利用评价指标体系,运用熵权法以及K-means聚类分析方法对上述中心城区土地集约利用程度进行分类,揭示市级城市、省直管城市、县级城市等不同行政级别管辖差异下中心城区土地集约利用的分异情况,为城市因地制宜制定土地集约利用政策提供依据。

关键词：建设用地节约集约利用评价熵权法中心城区

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室内微风扰动下墙面霉斑表面扩散范围研究

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中国环境科学 2024年第6期44卷 3091-3099页

作者：陈禹竹杨自力吴杰屈诚汪先钰刘雪琳张钧翔东华大学环境科学与工程学院上海201620

为明确室内微风气流扰动下,发霉墙壁霉菌污染物的表面扩散范围大小与变化规律,基于模拟试验法设计了发霉建材霉菌释放实验台,以室内墙面最常见的抹灰石膏类建材为对象,探究了在室内常见气流条件变化范围内,即不同气流速度(0.2~1.0m/s)... 详细信息

为明确室内微风气流扰动下,发霉墙壁霉菌污染物的表面扩散范围大小与变化规律,基于模拟试验法设计了发霉建材霉菌释放实验台,以室内墙面最常见的抹灰石膏类建材为对象,探究了在室内常见气流条件变化范围内,即不同气流速度(0.2~1.0m/s)、气流角度(0°~90°)､温度(18~30℃)､相对湿度(35%~75%),发霉墙壁表面霉斑的表面扩散范围与规律.结果表明:即使受室内气流的短时(10min)扰动,墙壁表面霉斑也具有较强的污染扩散性,其扩散范围可达原始霉斑自身直径的29倍,扩散区被严重污染,其霉菌浓度可达10CFU/cm^(2).霉斑表面扩散范围随气流相对湿度的降低、风速的增加、气流与墙壁夹角的降低而显著增大,但受气流温度的影响微弱.层次分析结果显示,各微风气流条件对霉斑扩散范围的影响权重排序为:气流速度(38.65%)>相对湿度(30.70%)>气流角度(30.65%),温度对霉菌污染物释放无影响.研究结果可为减缓室内霉斑的扩张性污染提供参考.

关键词：霉菌污染建筑环境室内墙面气流工况

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Incidence and prognosis of olfactory and gustatory dysfunctions related to SARS-CoV-2 Omicron strain infection in China:A national multicenter survey of 35,566 individuals

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 113-120页

作者： Meng-Fan liu Rui-Xia Ma xian-Bao Cao Hua Zhang Shui-Hong Zhou wei-Hong Jiang Yan Jiang Jing-Wu Sun Qin-Tai Yang Xue-Zhong li Ya-Nan Sun li Shi Min Wang Xi-Cheng Song Fu-Quan Chen Xiao-Shu Zhang Hong-Quan wei Shao-Qing yu Dong-Dong zhu luo Ba Zhi-wei Cao Xu-Ping Xiao Xin wei Zhi-Hong lin Feng-Hong Chen chun-Guang Shan Guang-Ke Wang Jing Ye Shen-Hong Qu Chang-Qing Zhao Zhen-lin Wang Hua-Bin li Feng liu Xiao-Bo Cui Sheng-Nan Ye Zheng liu yu Xu Xiao Cai wei Huang Ru-Xin Zhang yu-lin Zhao Guo-Dong yu Guang-gang Shi Mei-Ping lu Yang Shen yu-Tong Zhao Jia-Hong Pei Shao-Bing Xie Long-gang yu Ye-Hai liu Shao-wei Gu yu-Cheng Yang Lei Cheng Jian-Feng liu Graduate School of Beijing University of Chinese Medicine BeijingChina Department of Otorhinolaryngology Head and Neck Surgery China-Japan Friendship HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First People's Hospital of YinchuanYinchuanChina Department of Otorhinolaryngology The First People's Hospital of Yunnan ProvinceKunmingChina Department of Otorhinolaryngology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqiChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Xiangya Hospital Central South UniversityChangshaChina Department of Otorhinolaryngology Head and Neck Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of USTCHefeiChina Department of Otorhinolaryngology Head and Neck Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Qilu Hospital of Shandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Otolaryngology The Second Hospital of Shandong UniversityShandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery Peking University People's HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery Yantai Yuhuangding HospitalQingdao UniversityYantaiChina Department of Otorhinolaryngology Head and Neck Surgery Xijing HospitalThe Fourth Military Medical UniversityXi'anChina Gansu Provincial Center for Disease Control and Prevention LanzhouChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of China Medical UniversityShenyangChina Department of Otorhinolaryngology Head and Neck Surgery Tongji Hospit

Objective:This cross-sectional study aimed to determine the epidemiology of olfactory and gustatory dysfunctions related to COVID-19 in ***:This study was conducted by 45 tertiary Grade-A hospitals in *** and offline questionnaire data were obtained from patients infected with COVID-19 between December 28,2022,and February 21,*** collected information included basic demographics,medical history,smoking and drinking history,vaccination history,changes in olfactory and gustatory functions before and after infection,and other postinfection symptoms,as well as the duration and improvement status of olfactory and gustatory ***:Complete questionnaires were obtained from 35,566 *** overall incidence of olfactory and taste dysfunction was 67.75%.Being female or being a cigarette smoker increased the likelihood of developing olfactory and taste *** received four doses of the vaccine or having good oral health or being a alcohol drinker decreased the risk of such *** infection,the average olfactory and taste VAS scores were 8.41 and 8.51,respectively;after infection,they decreased to 3.69 and 4.29 and recovered to 5.83 and 6.55 by the time of the *** median duration of dysosmia and dysgeusia was 15 and 12 days,respectively,with 0.5%of patients having symptoms lasting for more than 28 *** overall self-reported improvement rate was 59.16%.Recovery was higher in males,never smokers,those who received two or three vaccine doses,and those that had never experienced dental health issues,or chronic accompanying ***:The incidence of dysosmia and dysgeusia following infection with the SARS-CoV-2 virus is high in *** and prognosis are influenced by several factors,including sex,SARS-CoV-2 vaccination,history of head-facial trauma,nasal and oral health status,smoking and drinking history,and the persistence of accompanying symptoms.

关键词： epidemiologic studies incidence olfactory disorders prognosis SARS-CoV-2 taste disorders

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