检索结果-南通市图书馆

Methane adsorption effected by pore structure of overmature continental shale:Lower Cretaceous Shahezi Formation,Xujiaweizi Fault,Songliao Basin

在线全文

学校读者我要写书评

暂无评论

Frontiers of Earth Science 2024年第1期18卷 172-187页

作者： Pengfei ZHANG Shuangfang LU Nengwu ZHOU Zizhi LIN Xiangchun CHANG Junjian ZHANG Guo chen Yumao PANG Junjie WANG Hongsheng HUANG Qi ZHI College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Sanya Offshore Oil&Gas Research Institute Northeast Petroleum UniversitySanya 572025China School of Geoscience China University of Petroleum(East China)Qingdao 266580China College of Resources and Environment Yangtze UniversityWuhan 430100China

Overmature continental shale is commonly developed,but few studies have given insight into its pore structure and sorption *** techniques,including SEM,helium porosity and permeability,N_(2)/CO_(2)adsorption,MICP,and NMR,were used to detect the pore structure of shale from the Shahezi Formation,Xujiaweizi Fault,Songliao *** excess methane adsorption volumes were measured by the volumetric method and modeled by the Langmuir *** on the findings,the most developed pores are intraparticle pores in clay minerals,followed by the dissolution pores in feldspar,but organic pores are *** selected shales have low helium porosity(mean 1.66%)and ultralow permeability(mean 0.0498×10^(−3)μm^(2)).The pore throats are at the nanoscale,and the pore-throat size distributions are unimodal,with most less than 50 *** studied shales are characterized by the lower specific surface area(SSA)and pore volume(PV)but the larger average pore *** total SSA is contributed by the micro-and mesopores,while the PV is dominated by meso-and *** pore structures are more complex and controlled by multiple factors,such as mineral compositions and diagenesis,but organic matter is not *** maximum absolute adsorption methane volume(VL)is 0.97−3.58 cm^(3)/g(mean 1.90 cm^(3)/g),correlating well with the total SSA,SSA,and pore volume of micropores,which indicates that methane is mainly adsorbed and stored in micropores,followed by mesopores.

关键词： continental shale pore structure methane adsorption Shahezi Formation Songliao Basin

Enhanced thermoelectric performance enabled by compositing ZrO_(2)in n-type SiGe alloy with low thermal conductivity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第3期43卷 1167-1176页

作者： Meng-Fei Wang Hua-Jun Lai Ji-Sheng Liang Jun-Liang chen Wang-Yang Ding Qi Zhou Ying Peng cheng-Yan Liu Lei Miao Guangxi Key Laboratory for Relativity Astrophysics State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite StructuresSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China Guangxi Academy of Sciences Nanning530007China Key Laboratory of Information Material Engineering Research Center of Electronic Information Materials and DevicesGuilin University of Electronic TechnologyMinistry of EducationGuilin541004China Guangxi Key Laboratory of Precision Navigation Technology and Application School of Information and CommunicationGuilin University of Electronic TechnologyGuilin541004China

SiGe-based thermoelectric(TE)materials have gained increasing interests due to their low maintenance costs,environmental friendliness and long ***,the intrinsically high thermal conductivity of Si-based materials also results in poor TE *** this investigation,a zirconia(ZrO_(2))composite strategy was applied to an n-type SiGe alloy,tremendously elevating its TE *** mechanical alloying and spark plasma sintering(SPS)processes,the ZrO_(2)induced the formation of nanopores in the SiGe matrix via phosphorus ***,such increase in porosity enhanced the phonon scattering and dramatically suppressed lattice thermal conductivity,from 2.83 to 1.59 W·m^(-1)·K^(-1)at 873 ***,reduced phosphorus doping led to an increase in Seebeck coefficients and a relatively minor decrease in electrical conductivity,The power factor didn't deteriorate significantly,either,as its maximum of~3.43 mW·m^(-1-)K^(-2)was achieved at 873 K with(Si_(0.8)Ge_(0.2))_(0.097)P_(0.03)(ZrO_(2))_(0.003).In short,a peak figure of merit(ZT)of~1.27 at 873 K and an average ZT~0.7 from 323 to 873 K were *** study demonstrates that the electrical and thermal transportation of SiGe material can be synergistically tuned by compositing ZrO_(2),illustrating a novel strategy to optimize the TE properties of bulk materials.

关键词： Thermoelectric SiGe alloy ZrO2 composting P element adsorption nanopores

The Appeals,Dilemmas,and Pathways of Enabling Rural Teachers’Professional Development Through Emerging Technologies

在线全文

学校读者我要写书评

暂无评论

Journal of Contemporary Educational Research 2024年第5期8卷 240-246页

作者： Hailang chen Jianhua Huang School of Electronic and Information Engineering Heyuan PolytechnicHeyuan 517000Guangdong ProvinceChina School of Humanities Heyuan PolytechnicHeyuan 517000Guangdong ProvinceChina

With the rapid advancements in technology,especially in digitalization and intelligence,numerous modern technologies have poured into rural schools,effectively improving their informatization ***,these technologies remain detached from rural teachers,failing to significantly enhance the quality of education and teaching in rural *** education is a crucial aspect of ensuring balanced development in *** question of how to enhance rural teachers’technological application abilities and fully leverage the positive role of technology in rural education and teaching has become a significant topic of current research on rural education *** better address this question,this study conducted a thorough examination of the specific appeals of rural teachers in the process of technology *** was discovered that rural teachers generally face dilemmas such as insufficient technological application abilities,difficulties in obtaining quality teaching resources,and the lack of continuous technical support and update *** on these findings,specific pathways such as strengthening rural teacher training,optimizing the allocation of educational resources,and establishing mechanisms for continuous technical support and updates are proposed to aid in the high-quality development of rural education.

关键词： Teacher professional development Emerging technologies Lifelong learning

Evaluation of the Application Effect of Psychological Nursing Intervention on Maintenance Hemodialysis Patients with Uremia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Clinical and Nursing Research 2024年第8期8卷 283-289页

作者： Jing chen Huang Can Taixing People’s Hospital Taizhou 225400Jiangsu ProvinceChina

Objective:To evaluate the application effect of psychological nursing intervention on maintenance hemodialysis(MHD)patients with ***:Sixty cases of uremic patients admitted to the hospital between May 2023 and May 2024 were selected for MHD treatment and divided using the random number table method into 30 cases in each *** observation group implemented psychological nursing intervention,while the reference group received conventional nursing intervention,after which the nursing effects were ***:After nursing,the psychological state score of the observation group was lower than that of the reference group;the treatment compliance of the observation group was higher than that of the reference group;the self-care ability score of the observation group was higher than that of the reference group,and the quality-of-life score of the observation group was higher than that of the reference group(P<0.05).Conclusion:Psychological nursing intervention for uremic MHD patients can improve their negative psychology,enhance treatment compliance,and comprehensively improve patients’self-care ability and quality of life.

关键词： Psychological nursing Maintenance hemodialysis Uremia

General multi-attack detection for continuous-variable quantum key distribution with local local oscillator

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第5期33卷 255-262页

作者：康茁刘维琪齐锦贺晨 School of Information Science and Technology Northwest UniversityXi'an 710127China

Continuous-variable quantum key distribution with a local local oscillator(LLO CVQKD)has been extensively researched due to its simplicity and *** practical security of an LLO CVQKD system,there are two main attack modes referred to as reference pulse attack and polarization attack ***,there is currently no general defense strategy against such attacks,and the security of the system needs further ***,we employ a deep learning framework called generative adversarial networks(GANs)to detect both *** first analyze the data in different cases,derive a feature vector as input to a GAN model,and then show the training and testing process of the GAN model for attack *** proposed model has two parts,a discriminator and a generator,both of which employ a convolutional neural network(CNN)to improve *** results show that the proposed scheme can detect and classify attacks without reducing the secret key rate and the maximum transmission *** only establishes a detection model by monitoring features of the pulse without adding additional devices.

关键词： CVQKD generative adversarial network attack classification

Slip rate and interseismic coupling along the Moxi-Shimian segment of the Xianshuihe fault, Eastern Qinghai-Xizang Plateau

在线全文

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2024年第4期15卷 338-351页

作者： Xinyu Zhao Gang Liu Zhaosheng Nie Wei Xiong Wei chen Mu Lin Dijin Wang Qi Li Jiansheng Yu Dongzhen Wang Pengfei Yu Institute of Seismology China Earthquake AdministrationWuhan 430071China Key Laboratory of Earthquake Geodesy.China Earthquake Administration Wuhan 430071China State Key Laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China

On September 5,2022,the Luding M6.8 earthquake occurred in the Moxi-Shimian segment of the Xianshuihe fault,coinciding with the historical ruptured zone of the 1786 Moxi *** seis-mogenic environment provides a foundation for comprehending the mechanism of the earthquake and its future *** the Moxi-Shimian segment,we establish a series of near-field Global Navigation Satellite Systems(GNsS)stations to enhance the spatial resolution of observational data for the inversion of the interseismic kinematic *** this study,with an elastic screw dislocation model con-strained by GNsS observations,the slip rate of the Moxi-Shimian segment is estimated to be 10.9±1.0 mm/yr,while the locking depth is 15.7±6.2 ***,we utilize a block-dislocation model to invert the interseismic fault coupling along the Kangding-Moxi-Shimian *** result indicates a gradual deepening of the locking depth along the section from Kangding to *** coseismic rupture of the 2022 event occurred within the high coupling regions in the Kangding-Moxi-Shimian segment,which indicates that the rupture kinematics in this event might be controlled by the interseismic *** seismic moment accumulated within the ruptured zone of the Luding earthquake since 1786 ranges in[1.42-3.40]×10^(19) N-m,which is significantly greater than the seismic moment released during the 2022 *** a result,we infer that the Luding earthquake released only a portion of the accumulated energy within the original rupture zone since 1786,indicating that the 2022 event has not caused a complete rupture in the Moxi-Shimian ***,there remains a substantial seismic hazard in this area.

关键词： Moxi-Shimian segment of Xianshuihe fault Luding earthquake Global positioning system Interseismic kinematic parameters

Ex vivo liver resection and auto-transplantation as an alternative for the treatment of liver malignancies: Progress and challenges

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 117-122页

作者： Xin Yang Lu Lu Wen-Wei Zhu Yi-Feng Tao Cong-Huan Shen Jin-Hong chen Zheng-Xin Wang Lun-Xiu Qin Hepatobiliary Surgery and Liver Transplantation Centers Department of General SurgeryHuashan Hospital&Cancer Metastasis InstituteFudan UniversityShanghai 200040China

Hepatectomy is still the major curative treatment for patients with liver ***,it is still a big challenge to remove the tumors in the central posterior area,especially if their location involves the retrohepatic inferior vena cava and hepatic *** vivo liver resection and auto-transplantation(ELRA),a hybrid technique of the traditional liver resection and transplantation,has brought new hope to these patients and therefore becomes a valid alternative to liver *** to its technical difficulty,ELRA is still concentrated in a few hepatobiliary centers that have experienced surgeons in both liver resection and liver *** efficacy and safety of this technique has already been demonstrated in the treatment of benign liver diseases,especially in the advanced alveolar ***,the application of ELRA for liver malignances has gained more ***,standardization of clinical practice norms and international consensus are still *** prognostic impact in these oncologic patients also needs further *** this review,we summarized the principles and recent progresses on ELRA.

关键词： Ex vivo liver resection Liver auto-transplantation Oncology Liver malignancies

Genetic and lipidomic analyses reveal the key role of lipid metabolism for cold tolerance in maize

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2024年第3期51卷 326-337页

作者： Lei Gao Haifang Jiang Minze Li Danfeng Wang Hongtao Xiang Rong Zeng Limei chen Xiaoyan Zhang Jianru Zuo Shuhua Yang Yiting Shi State Key Laboratory of Plant Environmental Resilience College of Biological SciencesFrontiers Science Center for Molecular Design BreedingCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key Laboratory of Wheat&Maize Crop Science College of Life SciencesHenan Agricultural UniversityZhengzhouHenan 450002China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Suihua Branch of Heilongjiang Academy of Agricultural Machinery Sciences SuihuaHeilongjiang 152052China

Lipid remodeling is crucial for cold tolerance in ***,the precise alternations of lipidomics during cold responses remain elusive,especially in maize(Zea mays L.).In addition,the key genes responsible for cold tolerance in maize lipid metabolism have not been ***,we integrate lipidomic,transcriptomic,and genetic analysis to determine the profile of lipid remodeling caused by cold *** find that the homeostasis of cellular lipid metabolism is essential for maintaining cold tolerance of ***,we detect 210 lipid species belonging to 13 major classes,covering phospholipids,glycerides,glycolipids,and free fatty *** lipid metabolites undergo specific and selective alterations in response to cold stress,especially mono-/di-unsaturated lysophosphatidic acid,lysophosphatidylcholine,phosphatidylcholine,and phosphatidylinositol,as well as polyunsaturated phosphatidic acid,monogalactosyldiacylglycerol,diacylglycerol,and *** addition,we identify a subset of key enzymes,including ketoacyl-acyl-carrier protein synthase II(KAS II),acyl-carrier protein 2(ACP2),male sterility33(Ms33),and stearoyl-acyl-carrier protein desaturase 2(SAD2)involved in glycerolipid biosynthetic pathways are positive regulators of maize cold *** results reveal a comprehensive lipidomic profile during the cold response of maize and provide genetic resources for enhancing cold tolerance in crops.

关键词： Maize Cold stress Lipid metabolism Transcriptome Lipidomic

Effect of fatigue load on the bending tribo-corrosion-fatigue behaviors between the main cable wires

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Friction 2024年第7期12卷 1512-1531页

作者： Bo WANG Dagang WANG Jihong YE Liang TANG Hailang CHONG Wei XU Xinxin ZHANG Jianhao chen Haiyan DENG Jie ZHANG Guowen YAO Magd Abdel WAHAB School of Mechatronic Engineering China University of Mining and TechnologyXuzhou 221116China Xuzhou Key Laboratory for Fire Safety of Engineering Structures China University of Mining and TechnologyXuzhou 221116China National Wire Rope Quality Inspection Center Nantong Product Quality Supervision and Inspection InstituteNantong 226011China Jiangsu Langshan Wire Rope Co. Ltd.Nantong 226003China School of Mechatronic Engineering Southwest Petroleum UniversityChengdu 610500China School of Civil Engineering Chongqing Jiaotong UniversityChongqing 400074China Soete Laboratory Faculty of Engineering and ArchitectureGhent UniversityZwijnaarde B-9052Belgium

The main cable bent around the saddle of the suspension bridge is subjected to the wind,the vehicle,the bridge’s own weight and the corrosive *** coupling of the three loads and the environments causes the friction,the corrosion,and the fatigue(tribo-corrosion-fatigue)among the wires inside the main *** this paper,a wire bending tribo-corrosion-fatigue test rig was designed and *** effect of fatigue load on the bending friction behaviors between the cable wires in ultrapure water and 3.5%NaCl solution was *** tribological properties and electrochemical corrosion behaviors under different fatigue loading ranges were *** tribo-corrosion-fatigue interaction between the cable wires was quantitatively characterized,and the mechanism of the interaction was *** results demonstrate that the increasing fatigue load exacerbates the coupling damage of the cable wires attributed to the enhanced *** findings carry theoretical importance when assessing the main cable’s deterioration and the load-bearing safety of a suspension bridge.

关键词： bending tribo-corrosion-fatigue interaction parallel steel wires fatigue load