检索结果-南通市图书馆

Method for detector description conversion from DD4hep to Filmbox

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第9期35卷 115-126页

作者： Zhao-Yang Yuan Tian-Zi Song Yu-jie zeng Kai-Xuan Huang Yu-Mei Zhang Zheng-Yun You School of Physics Sun Yat-sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

DD4hep serves as a generic detector description toolkit recommended for offline software development in next-generation high-energy physics(HEP)***,Filmbox(FBX)stands out as a widely used 3D modeling file format within the 3D software *** this paper,we introduce a novel method that can automatically convert complex HEP detector geometries from DD4hep description into 3D models in the FBX *** feasibility of this method was dem-onstrated by its application to the DD4hep description of the Compact Linear Collider detector and several sub-detectors of the super Tau-Charm facility and circular electron-positron collider *** automatic DD4hep–FBX detector conversion interface provides convenience for further development of applications,such as detector design,simulation,visualization,data monitoring,and outreach,in HEP experiments.

关键词： Detector description DD4hep FBX Geometry Offline software

Determination　of　Trace　Amounts　of　Cobalt　and　Copper　by　High　Performance　Liquid　Chromatography　with　Indigo　Carmine　Chemiluminescence　Detection

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1996年第4期12卷 348-353页

作者： ZHANG Xin-xiang CHENG jie-ke and zeng Yun-e(Department of Chemistry,Wuhan University,Wuhan,430072) WUHAN UNIV DEPT CHEMWUHAN 430072PEOPLES R CHINA

A post-column reaction chemiluminescence detection method in ion chromatography is described in this *** chemiluminescence system was indigo cramine-hydrogen peroxide. The chemiluminescence reaction conditions and the separation conditions of Co and Cu in chromatography were *** detection limits were 1.0 and 2.0×10-8 g/mL for Co and Cu respectively.

关键词： s:Chemiluminescehce detection HPLC Cobalt Copper Indigo Carmine

Monitor of Polymerization of Inverse Microemulsions Containing Methyl Methacrylate and Acrylic Acid

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2006年第2期17卷 247-250页

作者： Xiao LI Sheng Ping XIA Wei jie zeng Wei Ying ZHANG Sheng Xiong DONG College of Chemistry and Chemical Engineering FuzhouUniversity Fuzhou350002

The polymerization of the inverse microemulsions composed of methyl methacrylate,acrylic acid, sodium dodecyl sulfate and water was monitored by refractometer, conductometer and time-resolved light scattering device. The results showed that refractive index, conductivity or intensity distribution of scattered light changed along with polymerization, and different processes of polymerization could be identified.

关键词： Polymerization monitoring inverse microemulsion methyl methacrylate.

Radiolysis of HA in aqueous solutions using gamma rays

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2013年第B12期24卷 48-52页

作者： JIA Wenbao WEI Yonghong LIU Jianguo LING Yongsheng HEI Daqian SHAN Qing zeng jie College of materials science and technology Nanjing University of Aeronautics and Astronautics Nanjing 211100 China Department of Environmental Science and Engineering Tsinghua University Beijing 100084 China

The present work investigated the radiolysis of HA (Humic acids) in aqueous solutions and under gamma radiation. Absorbances at the range of 200-800 nm and chemical oxygen demand (COD) were used to characterize the degree of degradation of HA. The results indicated that absorbances and the concentrations of COD were decreased with increasing of irradiation dose while with increasing of irradiation dose the pH of the solutions was decreased at first and then increase. In addition, the effects of initial pH and primary solution concentrations on HA degradation were also investigated. It is shown that the higher primary solution concentrations, the lower degradation efficiency under the same irradiation dose. And the degradation efficiency of HA under neutral conditions is better than in acidic or alkaline conditions. © 2013, Science Press. All rights reserved.

关键词：水溶液伽马射线降解程度溶液浓度辐照剂量化学需氧量照射剂量降解效率

Mesopause temperatures and relative densities at midlatitudes observed by the Mengcheng meteor radar

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2023年第6期7卷 665-674页

作者： Wen Yi XiangHui Xue MaoLin Lu jie zeng HaiLun Ye JianFei Wu Chong Wang TingDi Chen Chinese Academy of Sciences Key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China Mengcheng National Geophysical Observatory School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for the Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences Center for Excellence in Comparative Planetology Hefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China

The atmospheric temperatures and densities in the mesosphere and lower thermosphere(MLT)region are essential for studying the dynamics and climate of the middle and upper *** this study,we present more than 9 years of mesopause temperatures and relative densities estimated by using ambipolar diffusion coefficient measurements observed by the Mengcheng meteor radar(33.4°N,116.5°E).The intercomparison between the meteor radar and Thermosphere Ionosphere Mesosphere Energetics and Dynamics/Sounding of the Atmosphere by Broadband Emission Radiometry(TIMED/SABER)and Earth Observing System(EOS)Aura/Microwave Limb Sounder(MLS)observations indicates that the meteor radar temperatures and densities agree well with the simultaneous satellite *** variations dominate the mesopause temperatures,with the maximum during winter and the minimum during *** mesopause relative densities also show annual variations,with strong maxima near the spring equinox and weak maxima before the winter solstice,and with a minimum during *** addition,the mesopause density exhibits a structure similar to that of the zonal wind:as the zonal wind flows eastward(westward),the mesopause density decreases(increases).At the same time,the meridional wind shows a structure similar to that of the mesopause temperature:as the meridional wind shows northward(southward)enhancements,the mesopause temperature increases(decreases).Simultaneous horizontal wind,temperature,and density observations provide multiple mesospheric parameters for investigating mesospheric dynamics and thermodynamic processes and have the potential to improve widely used empirical atmospheric models.

关键词： meteor radar mesopause horizontal wind temperature density

Tree allometry responses to competition and complementarity in mixed-species plantations of Betula alnoides

在线全文

学校读者我要写书评

暂无评论

Forest Ecosystems 2024年第4期11卷 469-479页

作者： Boyao Chen Kaili Liu Chunsheng Wang Junjie Guo Junkun Lu Lin Chen Zhigang Zhao jie zeng Research Institute of Tropical Forestry Chinese Academy of ForestryGuangzhou510520China Central South University of Forestry&Technology Changsha410004China Experimental Center of Tropical Forestry Chinese Academy of ForestryPingxiang532600China Nanjing Forestry University Nanjing210037China

Tree allometry plays a crucial role in tree survival,stability,and timber quantity and quality of mixed-species ***,the responses of tree allometry to resource utilisation within the framework of interspecific competition and complementarity remain poorly *** into consideration strong-and weakspace competition(SC and WC),as well as N_(2)-fixing and non-N_(2)-fixing tree species(FN and nFN),a mixedspecies planting trial was conducted for Betula alnoides,a pioneer tree species,which was separately mixed with Acacia melanoxylon(SC+FN),Erythrophleum fordii(WC+FN),Eucalyptus cloeziana(SC+nFN)and Pinus kesiya ***(WC+nFN)in southern *** years after planting,tree growth,total nitrogen(N)and carbon(C)contents,and the natural abundances of^(15)N and^(13)C in the leaves were measured for each species,and the mycorrhizal colonisation rates of *** were investigated under each *** variations and their relationships with space competition and nutrient-related factors were *** results showed a consistent effect of space competition on the height-diameter relationship of *** in mixtures with FN or *** tree height growth of *** was significantly promoted under high space competition,and growth in diameter at breast height(DBH),tree height and crown size were all expedited in mixtures with *** symbiotic relationship between ectomycorrhizal fungi and *** was significantly influenced by both space competition and N_(2) fixation by the accompanying tree species,whereas such significant effects were absent for arbuscular mycorrhizal ***,high space competition significantly decreased the water use efficiency(WUE)of ***,and its N use efficiency(NUE)was much lower in the FN *** equation modeling further demonstrated that the stem allometry of *** was affected by its NUE and WUE via changes in its height growth,and crown allometry was influ

关键词： Allometric relationship Resources competition and complementarity Mixed-species forest Tree-fungal symbiotic relationship N_2-fixing tree species Resource utilisation strategies

Targeting HER2 genomic alterations in non-small cell lung cancer

在线全文

学校读者我要写书评

暂无评论

Journal of the National Cancer Center 2021年第2期1卷 58-73页

作者： jie zeng Weijie Ma Richard Benjamin Young Tianhong Li Division of Hematology/Oncology Department of Internal MedicineUniversity of California Davis School of MedicineUniversity of California Davis Comprehensive Cancer CenterSacramentoCAUSA Department of Respiratory Medicine Shanghai Tenth People’s HospitalTongji University School of MedicineShanghaiChina

Oncogenic mutations and amplifications in the erythroblastic oncogene B(ERBB2),or human epidermal growth factor receptor 2(HER2),have emerged as distinct oncogenic drivers and drug targets in non-small cell lung cancer(NSCLC).Each genomic alteration occurs in 2-4%of NSCLC by next generation sequencing and is asso-ciated with constitutive HER2 *** most common HER2 mutations in NSCLC are exon 20 mutation A775_G776insYVMA mutation in the kinase domain and S310F mutation in the extracellular *** in breast and gastric cancer,HER2 protein overexpression in NSCLC is not validated to be a biomarker predictive of clinical response to HER2-targeted *** HER2 protein overexpression by immunohistochemistry(3+)only occurs in 2-4%of *** now HER2-targeted agents(such as afatinib and ado-trastuzumab emtansine)only demonstrate modest clinical activity in patients with HER2-mutant *** studies show concern for inferior clinical benefit of immune checkpoint inhibitors in HER2-mutated ***,platinum-based chemotherapy with or without an anti-angiogenesis inhibitor remains the first line standard treatment for this pa-tient *** May 2020 trastuzumab deruxtecan(T-DXd)received the *** and Drug Administration breakthrough therapy designation for HER2-mutant metastatic NSCLC,and was added as an option for HER2-mutant NSCLC to the NCCN guidelines V1.2021.A global phase III study of pyrotinib compared to docetaxel as a second line therapy for advanced NSCLC harboring HER2 exon 20 mutations was just opened for enrollment in September *** this review,we highlight the current knowledge and perspectives on targeting-HER2 genomic alterations in NSCLC.

关键词： HER2 ERBB2 Genomic alterations Biomarkers Non-small cell lung cancer

Untangling the increasing elevation of cropland in China from 1980 to 2020

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geography and Sustainability 2023年第4期4卷 281-293页

作者： Wanxu Chen Liyan Yang jie zeng Jintao Yuan Tianci Gu Zhiling Liu Department of Geography School of Geography and Information EngineeringChina University of GeosciencesWuhan 430078China School of Public Administration China University of GeosciencesWuhan 430074China

The redistribution of cropland to areas of higher elevation in China has long affected agricultural development and could seriously threaten national food ***,there is currently little research reported on this phenomenon,which may limit the improvement of cropland protection *** fill this gap,we analyzed the spatiotemporal characteristics and driving mechanisms of increased cropland elevation in China during the period *** average cropland elevation in China increased by 17.38 m from 1980 to *** gravity center of the cropland area and average cropland elevation in China moved to the northwest by 81.00 km and 51.47 km,*** amount of newly added cropland in eastern China was less than that in occupied regions;however,the average elevation of newly added cropland was greater than that of occupied cropland,though the opposite phenomenon was observed in western ***,temperature,land-use intensity,population,economic density,and distance to main roads were the main factors affecting the redistribution of cropland to areas of higher *** effects of these major driving factors exhibited significant spatial and temporal variations in *** study has important implications for improving existing cropland protection policies and developing more effective cropland management systems in China.

关键词： Cropland Elevation Geodetector Geographically weighted regression Spatial analysis China

Prognostic factors of pacing-induced cardiomyopathy

维普期刊数据库评论

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 Medical Journal 2020年第13期133卷 1533-1539页

作者： Hong Zhang Yu-jie Zhou Yu-jie zeng Emergency and Critical Care Center Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China Department of Cardiology 12th WardBeijing Anzhen HospitalCapital Medical UniversityBeijing Institute of Heart Lung and Blood Vessel DiseaseBeijing Key Laboratory of Precision Medicine of Coronary Atherosclerotic DiseaseClinical Center for Coronary Heart DiseaseCapital Medical UniversityBeijing 100029China

Background:The detrimental outcomes of right ventricular pacing on left ventricular electromechanical function ultimately result in heart failure,a phenomenon termed pacing-induced cardiomyopathy(PICM)in clinical *** study aimed to validate prognostic factors that can be used to identify patients with higher susceptibility to progress to the stage of cardiomyopathy before pacemaker ***:This observational analysis enrolled 256 patients between January 2013 and June 2016,23(8.98%)of whom progressed to PICM after 1 year of follow-up.A Cox proportional hazard model was used to analyze the prognostic factors associated with ***-response analysis was used to evaluate the relationship between significant indicators in multifactor analysis and ***:The mean values of left ventricular ejection fraction before and after pacemaker implantation in 23 patients diagnosed with PICM were 62.3%and 42.7%,*** analysis showed that sex,atrio-ventricular block,paced QRS duration,and ventricular pacing percentage were significantly associated with *** the multivariate analysis,male sex(hazard ratio:1.20,95%confidence interval[CI]:1.09-1.33,P<0.005),paced QRS duration(hazard ratio:1.95 per 1 ms increase,95%CI:1.80-2.12,P<0.001),and ventricular pacing percentage(hazard ratio:1.65 per 1%increase,95%CI:1.51-1.79,P<0.001)were independent prognostic factors associated with the development of *** ventricular pacing percentage and paced QRS duration level defined by the dose-response analysis were positively associated with PICM(P<0.05).Conclusions:Our findings indicated that paced QRS duration and ventricular pacing percentage were the most sensitive prognostic factors for PICM.

关键词： Right ventricular pacing Pacing-induced cardiomyopathy Heart failure