检索结果-南通市图书馆

Comparative Map-based Cloning for Genes Conferring Resistance to Soybean Cyst Nematode

在线全文

学校读者我要写书评

暂无评论

分子植物育种 2007年第2期5卷 154-155页

作者： X.j. Fang P.T. gong j.G. Mu j.R. Zhao Hainan Institute of Tropical Agricultural Resources Sanya 572025 China

Soybean cyst nematode (SCN, Heterodera glycines Ichinohe) is the most dangerous disease to cause significant yield losses. Most recent estimates for SCN indicate losses of nearly 9 million metric tons worldwide in

关键词：基因大豆线虫植物囊

Paleogene-Neogene stratigraphic realm and tectonic-sedimentary evolution of the Qilian Mountains and their surrounding areas

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2017年第5期60卷 992-1009页

作者： YANG LiRong LI jianXing YUE LePing WANG HongLiang GUO Huaijun ZHU XiaoHui ZHU Tao DU Kai ZHANG Rui ZHANG YunXiang gong Hujun State Key Laboratory of Continental Dynamics Department of Geology Northwest University Ministry of Land and Resources Key Laboratory of Magmatism Mineralization and Prospecting Xi'an Geological Survey CenterChina Geological Survey

The Cenozoic uplift of Qilian Mountains is critical to comprehend the uplift and extension of the Tibet Plateau as well as the formation of the first and second steps in China's topography. This study summarized dynamic stratigraphic realm comprehensively on the basis of stratigraphic correlation of different Cenozoic sedimentary basin regions of the Qilian Mountains and adjacent mountains. This facilitated the re-creation of the tectonic-sedimentary evolutionary process of the Qilian Mountains and their surrounding areas. The results indicate that during the Early Paleogene(Paleocene-Eocene), the Qilian Mountains were part of an uplift realm. During the Oligocene, Guide-Xining-Lanzhou-Linxia sag basin at the northern margin of the West Qinling Mountains came into being and was subjected to sedimentation. The Suli Basin located between the North and South Qilian paleo-uplifts began to form and undergo sedimentation. Intracontinental orogenic extrusion and basin detachment occurred at the Qilian Mountains during the Miocene, which caused successive uplifts of various mountains, including the Laji, South Qinghai,jishi, Liupan, and South Shule Mountains. Until Pliocene, Qilian Mountains uplifted continuously and resulted in the shrink,extinction and being eroded of the basins, and aeolian red clay started to accumulate.

关键词： Paleogene-Neogene Stratigraphic realm Tectonic-sedimentary evolution Qilian Mountain Tibet Plateau

同方期刊数据库

Engine Misfire Fault Detection Based on the Channel Attention Convolutional Model

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第1期82卷 843-862页

作者： Feifei Yu Yongxian Huang Guoyan Chen Xiaoqing Yang Canyi Du Yongkang gong School of Mechatronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou510665China School of Automotive and Transportation Engineering Guangdong Polytechnic Normal UniversityGuangzhou510665China

To accurately diagnosemisfire faults in automotive engines,we propose a Channel Attention Convolutional Model,specifically the Squeeze-and-Excitation Networks(SENET),for classifying engine vibration signals and precisely pinpointing misfire *** the experiment,we established a total of 11 distinct states,encompassing the engine’s normal state,single-cylinder misfire faults,and dual-cylinder misfire faults for different *** collection was facilitated by a highly sensitive acceleration signal collector with a high sampling rate of 20,*** collected data were methodically divided into training and testing sets based on different experimental groups to ensure generalization and prevent overlap between the two *** results revealed that,with a vibration acceleration sequence of 1000 time steps(approximately 50 ms)as input,the SENET model achieved a misfire fault detection accuracy of 99.8%.For comparison,we also trained and tested several commonly used models,including Long Short-Term Memory(LSTM),Transformer,and Multi-Scale Residual Networks(MSRESNET),yielding accuracy rates of 84%,79%,and 95%,*** underscores the superior accuracy of the SENET model in detecting engine misfire faults compared to other ***,the F1 scores for each type of recognition in the SENET model surpassed 0.98,outperforming the baseline *** analysis indicated that the misclassified samples in the LSTM and Transformer models’predictions were primarily due to intra-class misidentifications between single-cylinder and dual-cylinder misfire *** delve deeper,we conducted a visual analysis of the features extracted by the LSTM and SENET models using T-distributed Stochastic Neighbor Embedding(T-SNE)*** findings revealed that,in the LSTMmodel,data points of the same type tended to cluster together with significant ***,in the SENET model,data points of various types were more widely and evenly dispersed,demonstra

关键词： Channel attention SENET model engine misfire fault fault detection

胃肠道菌群及其在单胃动物主要在猪的营养和健康中的作用:目前的认识,可能的调节方法及对菌群生态学新的研究方法

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

畜牧与兽医 2012年第S1期44卷 357-358页

作者： j.D.Richards j.gong C.F.M.deLange 孙得发边四辈 Novus International Inc.20 Research Park DriveSt.Charles Novus International Trading(Shanghai)Co.Ltd. Food Research Program Agriculture and Agri-Food Canada Department of Animal and Poultry Science University of Guelph

胃肠道菌群还没有被完全定义,它是由几百种以厌氧菌为主的菌落组成的一个动态菌群。它的种类和数量随着动物的年龄、胃肠道的位点、以及营养和环境因素的变化而变化。胃肠道菌群以多种重要的方式给予宿主动物的生理和生产性能正面或负... 详细信息

胃肠道菌群还没有被完全定义,它是由几百种以厌氧菌为主的菌落组成的一个动态菌群。它的种类和数量随着动物的年龄、胃肠道的位点、以及营养和环境因素的变化而变化。胃肠道菌群以多种重要的方式给予宿主动物的生理和生产性能正面或负面的影响。本文将讨论以下几个方面:正常胃肠道菌群的建立和组成;它对宿主动物的正面和负面的影响;

关键词：肠道菌群单胃动物宿主动物生产性能厌氧菌调节方法微生物菌群结肠内容物饲料添加剂细菌数

在线全文

学校读者我要写书评

暂无评论

具有公共接点多路器的设计

国外电子测量技术 1991年第3期10卷 32-40页

作者： gong,j－A 马莱娜

广州地区双侧股骨近端双能X射线吸收法测量骨密度1055名的临床价值

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

中国组织工程研究与临床康复 2007年第2期11卷 366-368,371页

作者：弓健吴秋莲徐浩暨南大学附属第一医院核医学科广东省广州市510630 暨南大学医学院广东省广州市510630

目的:观察双侧股骨近端相应部位骨矿密度的差异性,探讨双能X射线吸收法测量双侧股骨近端的诊断价值。方法:选择2001-11/2005-12在暨南大学附属第一医院进行骨密度测量的广州地区受试者1055例(女性组789例、男性组266例)。①所有受试者... 详细信息

目的:观察双侧股骨近端相应部位骨矿密度的差异性,探讨双能X射线吸收法测量双侧股骨近端的诊断价值。方法:选择2001-11/2005-12在暨南大学附属第一医院进行骨密度测量的广州地区受试者1055例(女性组789例、男性组266例)。①所有受试者进行了双侧股骨近端(股骨颈、股骨转子区、股骨颈上部和整体髋关节)双能X射线吸收法骨密度测量,比较双侧股骨近端骨密度。②从受试者中筛选出绝经后妇女500例,按照世界卫生组织1994年制定的方案,依据双侧股骨近端各测量部位的最低T值进行诊断,比较双侧股骨近端骨密度测量结果在诊断水平上可造成的差异。③从受试者中随机选取30例(男8例,女22例,年龄21～72岁,平均42.1岁)同时进行了两次骨密度测量,计算各测量部位的精密度和最小显著变化值。结果:①女性组和男性组双侧股骨近端各测量部位骨密度值呈高度正相关(r=0.88～0.97,P<0.001)。男性组各部位骨密度值双侧差异均不显著;女性组中整体髋关节的骨密度值存在较小的但有统计学意义的差异(骨密度差值=0.030g/cm2,t=2.387,P=0.017),右侧高于左侧。②在500例绝经后妇女中,左右侧股骨近端结果一致者83.2%(416/500),84例(16.8%)双侧测量结果可产生不一致的诊断。经精密度校正后7.0%(35/500)双侧测量结果可产生不一致的诊断。③股骨近端不同部位的单侧测量精密度在0.7%～2.2%,而相应部位的双侧测量精密度在0.6%～1.2%。双侧测量精密度比单侧测量提高20%～45%。结论:①广州地区女性股骨近端的骨密度值存在较小的但有统计学意义的差异。②双侧测量精密度比单侧测量提高,有助于监测骨矿物质密度变化。③有部分的个体双侧测量会改变单侧测量的诊断结果,单侧测量存在有漏诊的可能性。

关键词：骨质疏松骨密度双能X射线吸收法股骨

A negative deviation from Porod’s law in SAXS of organo—MSU—X

在线全文

学校读者我要写书评

暂无评论

Beijing Synchrotron Radiation Facility 2001年第2期 20-25页

作者： Z.H.Li Y.j.gong D.Wu Y.H.Sun j.Wang Y.Liu B.Z.Dong Y.j. LaboratoryofSynchrotronRadiation InstituteofHighEnergyPhysicschineseAcademyofSciencesP.O.Box165Beijing100039People’sRepublicofchina StateKeyLaboratoryofCoalConverison InstituteofCoalChemistryChi

Small-angle X-ray scattering(SAXS)using synchrotron radiation as X-ray source has been employed to charactcizc the microscopic structrure of organo-modified mesoporous molecular sieves(organo-MSU-X)prepared by a one-pot template-directed *** is shown that the SAXS profile is hardly constant with Porod’s law showing a negative slope,i.e.,negative *** suggests that there is diffuse interfacial layer located between the pores and the *** suggests that the organic groups remain covalently linked to the matrix,as indicated by ^29SiCP MAS NMR and *** average thickness of the interfacial layer was found to be about 1nm for each of the three samples with different kinds and the same amounts(20? of organic *** kind of material has also been proved to possess both surface and mass fractal structure of the amophous porous silica materials.2001 Elsevier Science *** rights reserved.

关键词：中孔材料 SAXS 小角X射线散射分析界面层结构特征有机中孔分子筛负偏差 Porod法

RECENT EXPERIMENTAL PROGRESS in the EAST Tokamak

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

RECENT EXPERIMENTAL PROGRESS in the EAST Tokamak

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

第十五届全国等离子体科学技术会议

作者： X.gong,~,j.Li,B.N Wan for the EAST team Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China

The Experimental Advanced Superconducting Tokamak(EAST) is a fully superconducting tokamak with a flexible poloidal field system to accommodate both single null(SN) and double null(DN) divertor configurations,and its main mission is to establish steady-state high performance plasma and study related physics and *** the first plasma was successfully achieved on Sept.2006,the new capabilities including actively water-cooled PFCs,Heating & CD system, plasma control system,and diagnostics have been developed and validated in the past five years in the EAST Tokamak.A series of wall-conditioning technologies in superconducting machines(RF-DC,HFGDC and Li-Coating) are explored,which will make unique contributions and produce results of significance for ITER in the *** operation scenarios(plasma startup,and ramp up/down) were focused on superconducting tokomak and reliable plasma operation with Ip=1.0MA was *** the last experimental campaign on 2010,long pulse diverted plasma operations up to 100s were realized by LHCD of *** H-mode plasma discharges,with either LHCD only or combined auxiliary heating of ICRF and LHCD,have been achieved and sustained up to *** threshold power for H-mode access in EAST follows the international tokamak scaling and the energy confinement for H-mode in LHCD has been *** addition, experiments of SOL & Divertor physics,intrinsic rotation and toroidal flow driven in plasma core,full non-inductive CD,effective ICRF heating,*** encouraging. The future plan of EAST in next 3-5 years also will be presented in this paper.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang Nan Zheng Qingming Lin Yan You Zheng gong Yangping Zhuang jiali Wu Yu Wang Hanlin Huang jun Ke Feng Chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species