检索结果-南通市图书馆

An Investigation on Diagnostic Criteria of Systemic Lupus Erythematosus with Computerization

在线全文

学校读者我要写书评

暂无评论

Journal of Medical Colleges of PLA 1988年第2期 191-196页

作者：崔东斌谢刚姜澜王敏中张一军李贤玉刘荣卿苑锡光周芳全 Department of Dermatology Department of Radiology Department of Mathematics Department of Cardiorenal Diseases Department of Hematology Department of Infectious Diseases. -Department of Mathematics Department of Dermatology Southwest Hospital Third Military Medical College Chongqing

The clinical and laboratory findings of 2197 cases of systemic lupuserythematosus(SLE)were reviewed and analyzed to reveal the incidence of each of theabnormal changes and evaluate its value and specificity in the diagnosis of the *** to the conditions of our country and the experience of many authors,a new set ofdiagnostic criteria for SLE was established and systematized into a computer *** on 223 non-SLE cases and 92 cases of confirmed SLE,this new set of diagnosticcriteria had the rates of specificity and sensitivity of 91.9% and 95.7% *** is considered that the new set of diagnostic criteria of SLE is characterized by itscomparatively comprehensive contents and its conformity to the conditions at *** isespecially helpful for the early diagnosis of SLE.

关键词： systemic lupus erythematosus diagnostic criterion computer program

DYNAMIC DESIGN OF INTERNAL COMBUSTION ENGINE BLOCK STRUCTURE

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 1998年第1期11卷 39-43页

作者： Yu, Ming Huang, rongqing Lou, Yutao South China Univ of Technology Guangzhou China

Several main steps of internal combustion engine block structure dynamic design,such as model set up,structure dynamic response analysis,optimizing design and vibration and noise control,are discussed for the type of... 详细信息

关键词： Engine block Dynamic design ICE

In situ LA-ICP-MS analyses of mica and wolframite from the Maoping tungsten deposit,southern Jiangxi,China

在线全文

学校读者我要写书评

暂无评论

Acta Geochimica 2020年第6期39卷 811-829页

作者： Guanghong Chen Jianfeng Gao Jianjun Lu rongqing Zhang State Key Laboratory for Mineral Deposits Research School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China

The Maoping tungsten deposit is located in the Nanling W-Sn metallogenic belt in South *** and quartz vein types of mineralization developed in this *** occurs in the *** is occurs mainly in greisen and wolframite-quartz veins whereas phengite is found in the underground quartz *** granite and greisen,protolithionite,and zinnwaldite are partly replaced by ***-ICP-MS trace element analyses of micas and wolframite are employed to characterize the ore-forming source and evolution of ore forming *** show compositional variation trend in vertical directions with a decrease of W,Sn,Nb,and Ta and an increase of MgO,V,Ni,and *** in greisen has higher Mo,Sn,Nb,Ta,and REEs than those in quartz *** wolframites show similar REE patterns with enrichment of *** in greisen and quartz veins have negative Eu anomalies,while wolframites in quartz veinlet display positive Eu *** of mica and wolframite from different mining levels of the Maoping deposit suggest that the ore-forming fluids are dominated by magmatic hydrothermal fluids in the deep with a slight addition of meteoric water in the *** fractureinduced depressurization and fluid mixing controlled the evolution of ore-forming fluids and possibly lead to the wolframite deposition.

关键词： Mica Wolframite Magmatic-hydrothermal evolution In situ analysis Quartz-vein type W deposit

在线全文

学校读者我要写书评

暂无评论

T形地连墙码头结构计算

水运工程 2024年第4期 50-55页

作者：唐军军尹涛李荣庆中交水运规划设计院有限公司北京100007

针对T形地连墙结构受力影响因素复杂的问题,结合工程实例,利用STAAD软件采用竖向弹性地基梁法对码头结构进行分析。研究不同模型单元划分精度、地连墙入土深度以及回填料m值选取对地连墙结构内力的影响,结果表明:随模型单元划分精度的提... 详细信息

针对T形地连墙结构受力影响因素复杂的问题,结合工程实例,利用STAAD软件采用竖向弹性地基梁法对码头结构进行分析。研究不同模型单元划分精度、地连墙入土深度以及回填料m值选取对地连墙结构内力的影响,结果表明:随模型单元划分精度的提高,地连墙结构海侧弯矩增大,陆侧弯矩减小,锚碇墙结构弯矩变化规律与之相反,最终两者内力趋于稳定;在踢脚稳定的前提下,随地连墙底端入土深度的增加,墙体结构海侧弯矩减小、陆侧弯矩增大、位移减小;随m取值变大,锚碇墙海侧弯矩增大、陆侧弯矩减小,且敏感度较高。研究结论可为T形地连墙码头结构的设计提供参考。

关键词： T形地下连续墙竖向弹性地基梁法分段m法 STAAD

Robust ionospheric clutter mitigation method for high frequency surface wave radar

在线全文

学校读者我要写书评

暂无评论

Science in China(Series F) 2008年第12期51卷 2087-2093页

作者： LI Lei XU rongqing LI GaoPeng Research Institute of Electronic Engineering Harbin Institute of Technology Harbin 150001 China

This paper analyzes the characteristics of ionospheric clutter, which has proven to be the greatest impediment in high frequency surface wave radar （HFSWR）. Ionospheric clutter influences most range bins, all Doppler bins and beams, and exhibits a high directivity. A robust adaptive side-lobe cancellation algorithm based on orthogonal auxiliary beams, which use the difference beams to estimate the ionospheric clutter information, is introduced to suppress the ionospheric clutter. Training data was selected by excluding the sea clutter and probable target unit; and diagonal loading was added to enhance the robustness of the algorithm. Experimental results demonstrate that the algorithm is able to suppress the ionospheric clutter whilst preserving the desired characteristics of the target echoes and is suitable for practical implementation.

关键词： HFSWR ionospheric clutter adaptive signal processing auxiliary beam diagonal loading

Erosion of the prismatic layer by the organic matrix during the formation of the nacre-prism transition layer in the shell of Pinctada fucata (Bivalvia, Mollusca)

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2011年第9期56卷 869-876页

作者： LIU XiaoJun LIU Chang SUN Juan zhou YuJuan ZHENG GuiLan ZHANG GuiYou WANG HongZhong XIE LiPing ZHANG rongqing Institute of Marine Biotechnology School of Life Sciences Tsinghua University Beijing 100084 China Protein Science Laboratory of the Ministry of Education Tsinghua University Beijing 100084 China

Three variants of the sequence of formation of the nacre-prism transition layer were observed in Pinctada fucata (Bivalvia, Mollusca) shells. In each case, the layer was formed by the organic matrix secreted by the mantle, together with the interprismatic organic envelope. The continuity of the organic phase throughout the shell was maintained as the new nacreous layer was formed on the nacre-prism transition layer. Changes in the interprismatic organic envelopes on either side of the nacre-prism transition zone indicated that the organic matrix of the nacre-prism transition layer becomes embedded into the organic phase of the prismatic layer. It is concluded that penetration and erosion of the prisms by the organic matrix generates a strong bond between the prismatic and nacreous layers.

关键词：有机基质珍珠层过渡层双壳类棱镜软体动物侵蚀棱柱

带电作业环境下双臂机器人机械臂运动轨迹控制

在线全文

学校读者我要写书评

暂无评论

机械设计与制造工程 2024年第5期53卷 73-77页

作者：汪良坤崔荣卿张廷金国网江苏省电力有限公司灌南县供电分公司江苏灌南223500

带电作业下静电会产生非正常吸引效应,导致机器人机械臂运动轨迹控制精度降低,为此提出了一种基于粒子群优化专家PID控制器的双臂机器人运动轨迹控制方法。首先构建了带电作业机械臂的动力学模型和机械臂的约束条件方程;然后根据实际值... 详细信息

带电作业下静电会产生非正常吸引效应,导致机器人机械臂运动轨迹控制精度降低,为此提出了一种基于粒子群优化专家PID控制器的双臂机器人运动轨迹控制方法。首先构建了带电作业机械臂的动力学模型和机械臂的约束条件方程;然后根据实际值和期望值的误差,使用专家控制律确定了PID控制器的输出;最后利用粒子群算法优化PID控制器,建立了优化目标函数,实现了对双臂机器人机械臂运动轨迹的控制。实验结果表明,该方法能够提高轨迹控制的精度,并缩短轨迹控制时间,在实际工程中具有可行性和实用性。

关键词：带电作业环境轨迹控制专家PID控制粒子群算法动力模型

维普期刊数据库博看期刊

Underice Operation of SJT-5 ROV

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 1993年第3期8卷 349-354页

作者： Tang, rongqing Wang, Daoyan Zhang, Xixian Shanghai Jiao Tong Univ Shanghai China

The authors have used a low-cost ROV of observation type for underice surveying of the Nen-Jiang Cross-river oil pipe line in the Da Qing oil field. The operation method, process and the safety measures for severe col... 详细信息

关键词： Accident prevention Electric vehicles Engineering research Oil fields Remote control Rivers Surveying

辐射损伤早期小鼠呼出气特征性挥发性有机化合物分析及诊断价值

在线全文

学校读者我要写书评

暂无评论

军事医学 2024年第2期48卷 88-94页

作者：肖炳坤缪潇瑶李志恒郑晓飞黄荣清军事科学院军事医学研究院辐射医学研究所北京100850

目的探索辐射损伤早期小鼠呼出气特征性挥发性有机化合物(VOC)成分变化及诊断价值。方法应用热脱附-气相色谱-质谱(TD-GC/MS)技术分析受800 cGy 60Coγ射线照射小鼠呼出气中的VOC,筛查辐射损伤早期特征性VOC,建立诊断模型。结果小鼠30 ... 详细信息

目的探索辐射损伤早期小鼠呼出气特征性挥发性有机化合物(VOC)成分变化及诊断价值。方法应用热脱附-气相色谱-质谱(TD-GC/MS)技术分析受800 cGy 60Coγ射线照射小鼠呼出气中的VOC,筛查辐射损伤早期特征性VOC,建立诊断模型。结果小鼠30 d存活率为4.2%,辐射损伤后7 h特征性VOC差异显著,共筛选出30个辐射损伤早期相关的差异性代谢物。通过受试者工作特征曲线(ROC)评价小鼠辐照后呼出气差异性代谢物的诊断价值,单个化合物的曲线下面积(AUC)>0.8,经Fisher判别分析筛选呼出气9种潜在生物标志物构建诊断模型,其敏感度和特异性均接近100%。结论呼出气VOC分析有望为辐射损伤早期筛查和治疗提供一种非侵入性的诊断手段。

关键词：挥发性有机化合物辐射损伤呼出气热脱附-气质联用诊断模型