检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

腓骨近端截骨治疗胫骨后外侧平台骨折的效果

现代医药卫生 2016年第11期32卷 1632-1634页

作者：何舰苟远涛唐俊牟帅赵亮重庆医科大学附属四川省八一康复中心骨关节科成都611135

目的探讨腓骨近端截骨治疗胫骨后外侧平台骨折的手术效果。方法选择2010年9月至2012年9月该中心收治的胫骨后外侧平台骨折患者60例作为研究对象,手术方式采用膝关节后外侧入路腓骨近端截骨治疗。入路自膝关节后外侧显露腓骨近端及腓总神... 详细信息

目的探讨腓骨近端截骨治疗胫骨后外侧平台骨折的手术效果。方法选择2010年9月至2012年9月该中心收治的胫骨后外侧平台骨折患者60例作为研究对象,手术方式采用膝关节后外侧入路腓骨近端截骨治疗。入路自膝关节后外侧显露腓骨近端及腓总神经,腓骨近端截骨后向上翻起,于腘肌和比目鱼肌间隙分别显露胫骨后外侧平台,骨折块在直视下复位,用斜T型锁定钢板或有限接触加压钢板于胫骨后外侧固定骨块。结果 60例患者全部获得12个月以上的随访。患者第3、6、12个月膝关节最大弯曲度与术后1个月比较,差异均有统计学意义(t=5.792、8.288、8.776,P0.05)。第3、6、12个月膝关节医院特殊手术评分(HSS评分)与术后1个月比较,差异均有统计学意义(t=8.139、9.900、8.901,P0.05)。术后无一例患者发生手术区皮肤坏死、感染或内固定松动。结论经HSS评分后外侧腓骨近端截骨治疗胫骨平台后外侧骨折,可直视下复位关节面和固定,并防止骨折再移位,有利于患者良好的膝关节功能恢复。

关键词：胫骨骨折腓骨截骨术膝关节治疗结果

Ghost Module Based Residual Mixture of Self-Attention and Convolution for Online Signature Verification

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第4期79卷 695-712页

作者： Fangjun Luan Xuewen mu shuai Yuan Department of Computer Technology School of Computer Science and EngineeringShenyang Jianzhu UniversityShenyang110168China Liaoning Province Big Data Management and Analysis Laboratory of Urban Construction Shenyang Jianzhu UniversityShenyang110168China Shenyang Branch of National Special Computer Engineering Technology Research Center Shenyang Jianzhu UniversityShenyang110168China

Online Signature Verification (OSV), as a personal identification technology, is widely used in various ***, it faces challenges, such as incomplete feature extraction, low accuracy, and computational heaviness. Toaddress these issues, we propose a novel approach for online signature verification, using a one-dimensionalGhost-ACmix Residual Network (1D-ACGRNet), which is a Ghost-ACmix Residual Network that combines convolutionwith a self-attention mechanism and performs improvement by using Ghost method. The Ghost-ACmix Residualstructure is introduced to leverage both self-attention and convolution mechanisms for capturing global featureinformation and extracting local information, effectively complementing whole and local signature features andmitigating the problem of insufficient feature extraction. Then, the Ghost-based Convolution and Self-Attention(ACG) block is proposed to simplify the common parts between convolution and self-attention using the Ghostmodule and employ feature transformation to obtain intermediate features, thus reducing computational ***, feature selection is performed using the random forestmethod, and the data is dimensionally reducedusing Principal Component Analysis (PCA). Finally, tests are implemented on the MCYT-100 datasets and theSVC-2004 Task2 datasets, and the equal error rates (EERs) for small-sample training using five genuine andforged signatures are 3.07% and 4.17%, respectively. The EERs for training with ten genuine and forged signaturesare 0.91% and 2.12% on the respective datasets. The experimental results illustrate that the proposed approacheffectively enhances the accuracy of online signature verification.

关键词： Online signature verification feature selection ACG block ghost-ACmix residual structure

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

托伐普坦类似物的合成及其利尿活性

合成化学 2012年第5期20卷 543-549页

作者：杨传伟牛端穆帅王平保谭初兵周植星刘登科河南大学药学院河南开封475004 天津医科大学研究生院天津300070 天津大学化工学院天津300072 天津药物研究院天津300193

以2-氨基-5-氯苯甲酸甲酯为原料,经五步反应制得7-氯-5-氧代-2,3,4,5-四氢-1H-苯氮杂卓艹(2);2与5-硝基吡啶-2-甲酰氯(或对硝基苯甲酰氯)发生N-酰化反应,再经SnCl2还原制得关键中间体4a(或4b);在4的氨基上引入取代苯甲酰基或苯磺酰基合... 详细信息

以2-氨基-5-氯苯甲酸甲酯为原料,经五步反应制得7-氯-5-氧代-2,3,4,5-四氢-1H-苯氮杂卓艹(2);2与5-硝基吡啶-2-甲酰氯(或对硝基苯甲酰氯)发生N-酰化反应,再经SnCl2还原制得关键中间体4a(或4b);在4的氨基上引入取代苯甲酰基或苯磺酰基合成了15个具有潜在AVP-V2受体抑制作用的新型托伐普坦类似物(5a～5k,6b,6i,7b和8d),其结构经1H NMR,IR和MS表征。SD大鼠利尿活性试验表明,5～8均有一定的利尿活性,且部分化合物活性较高。

关键词：托伐普坦类似物 AVP-V2受体拮抗剂合成利尿活性

7-氯-5-氧代-2,3,4,5-四氢-1H-1-苯并氮杂卓的合成工艺改进

在线全文

学校读者我要写书评

暂无评论

精细化工中间体 2011年第5期41卷 27-28,31页

作者：陈旭王平保穆帅刘登科河南大学药学院河南开封475001 天津药物研究院天津300193 天津大学化工学院天津300072

以7-氯-5-氧代-4-乙氧羰基-1-对甲苯磺酰基-2,3,4,5-四氢-1-苯并氮杂卓为原料,在硫酸作用下"一锅法"反应制得7-氯-5-氧代-2,3,4,5-四氢-1H-1-苯并氮杂卓。系统研究了硫酸浓度和物料配比对产品收率的影响。总收率为95%。改进后的合成方... 详细信息

以7-氯-5-氧代-4-乙氧羰基-1-对甲苯磺酰基-2,3,4,5-四氢-1-苯并氮杂卓为原料,在硫酸作用下"一锅法"反应制得7-氯-5-氧代-2,3,4,5-四氢-1H-1-苯并氮杂卓。系统研究了硫酸浓度和物料配比对产品收率的影响。总收率为95%。改进后的合成方法操作简单,经济合理,适于工业化生产。

关键词： 7-氯-5-氧代-2 3 4 5-四氢-1H-1-苯并氮杂卓工艺改进托伐普坦

Dietary citrus pectin drives more ileal microbial protein metabolism and stronger fecal carbohydrate fermentation over fructooligosaccharide in growing pigs

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2022年第4期11卷 252-263页

作者： Yanan Zhang Chunlong mu shuai Liu Weiyun Zhu Laboratory of Gastrointestinal Microbiology Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal HealthCollege of Animal Science and TechnologyNanjing Agricultural UniversityNanjing 210095China National Center for International Research on Animal Gut Nutrition Nanjing Agricultural UniversityNanjing 210095China

Fructo-oligosaccharide(FOS)and pectin are known soluble dietary fibers and can influence gut microbiota and consequently modulate gut *** understand the differential impact patterns of pectin *** in modulating gut microbiota in the small and large intestine,an ileal-cannulated pig model was adopted to compare the temporal and spatial effects of FOS and citrus pectin(CP)on the gut *** terminal ileal-cannulated pigs were randomly divided into 2 groups and fed with a standard diet supplemented with either 3% FOS or 3% CP for 28 *** CP group and FOS group showed different microbial composition,especially in the feces,with time and location as major factors affecting microbiota in the CP group,and with only location contribution in the FOS *** the feces,relative to the FOS group,the CP group showed higher abundance of Christensenellaceae R-7 group and Ruminococcaceae UCG-010 and lower abundance of Mitsuokella and Olsenella(adjusted P<0.05),a higher level of shortchain fatty acids and a lower level of lactate at both d 14 and 25(P<0.05),and more copy numbers of genes encoding key enzymes related to propionate(mmd A)and butyrate(BCo AT)production and lactate utilization(Lcd A)(P<0.05),indicating a greater degree of microbial carbohydrate *** the ileum,as compared with FOS,CP increased the bacteria with high capability of fermenting amino acids,including Escherichia-Shigella and Klebsiella(adjusted P<0.05),and the expression of enzymes responsible for amino acid fermentation(*** decarboxylase),as well as the amino acid fermentation products(cadaverine and tyramine)(P<0.05),indicating a greater degree of amino acid ***,our results highlight a differential dynamic impact of dietary CP *** on microbial composition and metabolism in the *** dietary CP has a stronger ability to promote microbial amino acid fermentation in the ileum and carbohydrate fermentation in the feces than *** findings provide

关键词： Fructo-oligosaccharide Citrus pectin Gut microbiota Microbial metabolism Pig

在线全文

学校读者我要写书评

暂无评论

基于多压力传感器负压波的管道检测法

传感器与微系统 2015年第5期34卷 115-118页

作者：王正王洪诚傅磊穆帅欢王蕾西南石油大学机电工程学院四川成都610500 西南石油大学电气信息学院四川成都610500

提出了一种基于多压力传感器负压波的管道泄漏检测方法。该方法运用泵站前端与后端的各个压力传感器接收到负压波的先后顺序,根据此顺序进行合力判断负压波是由管道泄漏引起还是由泵站工况调整引起。该方法能降低系统漏报率、提高系统... 详细信息

提出了一种基于多压力传感器负压波的管道泄漏检测方法。该方法运用泵站前端与后端的各个压力传感器接收到负压波的先后顺序,根据此顺序进行合力判断负压波是由管道泄漏引起还是由泵站工况调整引起。该方法能降低系统漏报率、提高系统泄漏定位的精度,并确保系统能够有效运行。

关键词：负压波压力传感器合力判断漏报率泄漏定位

在线全文

学校读者我要写书评

暂无评论

悬吊组合式电动吊篮安拆施工的研究

建筑技术开发 2018年第24期45卷 62-65页

作者：周阳穆帅葛艳艳亢磊古晓峰中建七局建筑装饰工程有限公司郑州450004

意大利都灵理工大学洛阳中意研究院服务楼外幕墙工程倾斜钢构柱外装饰面为氟碳喷涂铝单板,由于受建筑结构造型、场地条件等因素的限制,无法采用搭设满堂脚手架或普通电动吊篮等措施完成施工,采用悬吊组合式电动吊篮有效地解决了倾斜钢... 详细信息

意大利都灵理工大学洛阳中意研究院服务楼外幕墙工程倾斜钢构柱外装饰面为氟碳喷涂铝单板,由于受建筑结构造型、场地条件等因素的限制,无法采用搭设满堂脚手架或普通电动吊篮等措施完成施工,采用悬吊组合式电动吊篮有效地解决了倾斜钢构柱饰面安装工程的施工难题,取得了良好的效果,并积累了一些经验。

关键词：吊篮轨道钢桁架

Tensile Properties of Cast Alloy IN625 in Relation to δ Phase Precipitation

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2019年第4期32卷 535-540页

作者： Yi-Qiang mu Chang-shuai Wang Wen-Long Zhou Lan-Zhang Zhou Institute of Metal Research Chinese Academy of Science School of Materials Science and Engineering Dalian University of Technology

The relationship between the tensile properties and S(delta) phase precipitation in cast alloy IN625 was investigated in this paper. Although the influences of δ phase on the mechanical properties have been pointed out in our previous work, the relationship is still not directly determined due to the coexistence of γ"(gamma double prime) and δ precipitates. In order to exclude the effect from γ" phase, various fractions of δ precipitates with few γ" precipitates were obtained by a set of experimental alloys aging at 750 ℃, and tensile tests were conducted in parallel. The results showed that both yield strength and ultimate tensile strength increased nearly in linear with increasing δ phase fraction, while the elongation was relatively and limitedly affected by δ precipitation when the area fraction of δ phase was above 10%.

关键词： δ Phase Cast alloy IN625 Tensile properties Advanced ultra-supercritical(AUSC)

Phase Transformation and Its Effect on Mechanical Properties of C300 Weld Metal after Aging Treatment at Different Temperatures

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2015年第6期22卷 527-533页

作者： shuai YANG Yun PENG Xiao-mu ZHANG Zhi-ling TIAN China Railway Materials Technologies Company Limited State Key Laboratory of Advanced Steel Processes and Products Central Iron and Steel Research Institute

The influence of aging temperature on phase transformation and mechanical properties of weld metal of maraging steel （grade C300） was studied. Microstructure was analyzed by means of optical microscopy, transmission e leetron microscopy, scanning electron microscopy and energy dispersive spectrum analysis. Gibbs free energy of Nia Ti and Fez Mo at different temperature was calculated by Thermal-calc software. The microstructure of weld metal in as- welded state is martensite. The yield strength of weld metal after 430 ℃ aging process may increase to 1561 MPa from 890 MPa in as-welded state, which is ascribed to the formation of spinodal constitute and GP zones. After 480 ℃ aging process, there are great deal of NiaTi precipitates in the martensite matrix and 10% reverted austenite phase in the cellular grain boundary, and the yield strength increases to 1 801 MPa. After aging process at 580 ℃ , there are many Fe2 Mo precipitates in the martensite matrix and 30%o reverted austenite phase in the cellular grain boundary, and the yield strength is 1329 MPa, which ls the lowest among the three cases. The phase transformation may also influence the toughness. It is found that precipitates make the toughness decrease and reverted austenite increases it. The mechanism of phase transformation on strength and toughness is discussed.

关键词： maraging steell weld metal aging temperature precipitate reverted austenitel mechanical property