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老年桡骨远端骨折患者经掌侧入路钢板内固定术后复位丢失情况及危险因素分析

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中国临床保健杂志 2024年第3期27卷 398-401页

作者：范斌董辉辉李永恒韩健梁志强咸阳市第一人民医院创伤骨科咸阳712000

目的分析老年桡骨远端骨折患者经掌侧入路钢板内固定术后复位丢失情况及危险因素。方法回顾性分析2018年1月至2022年12月咸阳市第一人民医院收治的80例老年桡骨远端骨折患者病历资料。所有患者均接受经掌侧入路钢板内固定术治疗,依据患... 详细信息

目的分析老年桡骨远端骨折患者经掌侧入路钢板内固定术后复位丢失情况及危险因素。方法回顾性分析2018年1月至2022年12月咸阳市第一人民医院收治的80例老年桡骨远端骨折患者病历资料。所有患者均接受经掌侧入路钢板内固定术治疗,依据患者术后是否出现复位丢失情况分组,采用单因素分析2组资料差异,采用多因素logistic回归分析术后复位丢失的影响因素。结果80例老年桡骨远端骨折患者中,依据复位成功标准,术后复位丢失患者24例(30.00%)纳入为复位丢失组,术后复位未丢失患者56例(70.00%)纳入复位成功组;2组患者年龄、骨折AO分型、骨折至接受手术时间、骨质疏松情况、桡骨远端至远端螺钉距离、术后功能锻炼开始时间比较,差异有统计学意义(P<0.05);经多因素logistic回归分析显示,年龄、骨折AO分型、骨折至接受手术时间、骨质疏松、桡骨远端至钢板远端螺钉距离均为老年桡骨远端骨折患者经掌侧入路钢板内固定术后复位丢失的影响因素(P<0.05)。结论老年桡骨远端骨折患者经掌侧入路钢板内固定术后复位丢失发生率较高,影响因素包括年龄、骨折AO分型、骨折至接受手术时间、骨质疏松、桡骨远端至钢板远端螺钉距离。

关键词：桡骨骨折骨折固定术,内治疗结果危险因素老年人

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MRI与CT诊断膝关节损伤的临床应用分析

医学影像学杂志 2024年第5期34卷 133-136页

作者：刘卫国陈亮陈小光张世民张剑北京市平谷区医院骨科中心北京101200 北京市平谷区医院放射科北京101200

探讨术前用三维CT行胫骨平台骨折Schatzker分型后,应用MRI检查诊断膝关节损伤的临床价值。方法选取胫骨平台骨折患者124例,术前应用三维CT检查扫描行胫骨平台骨折Schatzker分型,同时应用MRI评估膝关节半月板损伤和韧带损伤的程度。结果... 详细信息

探讨术前用三维CT行胫骨平台骨折Schatzker分型后,应用MRI检查诊断膝关节损伤的临床价值。方法选取胫骨平台骨折患者124例,术前应用三维CT检查扫描行胫骨平台骨折Schatzker分型,同时应用MRI评估膝关节半月板损伤和韧带损伤的程度。结果 MRI诊断膝半月板损伤98例,MRI检查准确率、特异度、灵敏度分别为86.29%、71.43%、89.32%。MRI显示半月板损伤程度,Ⅰ度15例,Ⅱ度45例、Ⅲ度38例。根据CT胫骨平台骨折Schatzker分型,Ⅰ型、Ⅱ型半月板损伤Ⅱ度百分比为69.57%和58.62%,Ⅴ型和Ⅵ型半月板损伤Ⅲ度百分比为61.54%和64.29%。结论术前CT行胫骨平台骨折Schatzker分型,应用MRI可了解胫骨平台骨折合并膝半月板及韧带损伤。

关键词：胫骨平台骨折 Schatzker分型膝半月板磁共振成像体层摄影术,X线计算机

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基于虚拟统计能量法的运载火箭声振环境预示

计算机仿真 2024年第7期41卷 50-54,294页

作者：王英诚杨浩亮杨毅强周泽北京中科宇航技术有限公司北京100176 中国科学院力学研究所北京100089 海克斯康制造智能设计与工程业务单元北京100089

运载火箭在飞行过程中要面临复杂且恶劣的力学环境,其中跨声速段引起的声致振动最为严酷,因此准确预示跨声速火箭声振环境是火箭研制成功的重要基础之一。噪声试验是准确预示运载火箭声振环境有效的方法,但不利于研制早期阶段暴露潜在... 详细信息

运载火箭在飞行过程中要面临复杂且恶劣的力学环境,其中跨声速段引起的声致振动最为严酷,因此准确预示跨声速火箭声振环境是火箭研制成功的重要基础之一。噪声试验是准确预示运载火箭声振环境有效的方法,但不利于研制早期阶段暴露潜在的力学风险。为此,研究将基于虚拟统计能量法应用于运载火箭声振环境预示,通过对比某运载火箭舱段噪声试验试验结果和虚拟统计能量法的仿真预示结果,证明了虚拟统计能量法可实现全频域的运载火箭声振环境预示。

关键词：统计能量分析运载火箭噪声试验环境预示

Tumor targeting of HPMA copolymer conjugates containing sulfadiazine groups

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Chinese Chemical Letters 2012年第7期23卷 875-878页

作者： jian Chao Yuan Xiao Li Xie Xian Wu Zeng Hong Yun Guo cheng Ping Miao Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education Key Laboratory of Polymer Materials of Gansu ProvinceCollege of Chemistry&Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China Department of Nuclear Medicine Gansu Academy of Medical Sciences&Gansu Provincial Tumor HospitalLanzhou 730050China

To develop new tumor targeting macromolecular conjugates,poly（HPMA）-SD-APMA-DTPA（HPMA：N-（2-hydroxypropyl）- methacrylamide;APMA：N-（3-ammopropyl）methacrylamide;DTPA：diethylenetriaminepentaacetic acid;SD：sulfadiazine） was synthesized and *** poly（HPMA）-SD-DTPA conjugates were radiolabeled with the radionuclide ^（99m）Tc and tested for uptake by cultured H22 cells in ***-^（99m）Tc（radiotracer 1） and poly（HPMA）-DTPA-^（99m）Tc（radiotracer 2） were also synthesized and characterized for *** uptake of poly（HPMA）-SD-DTPA-^（99m）Tc（radiotracer 3,34.76%） was significantly higher than that of poly（HPMA）-DTPA-^（99m）Tc（16.40%）,indicating that uptake of the poly（HPMA）-SD-DTPA-^（99m）T was active *** uptake of poly（HPMA）-DTPA-^（99m）Tc was significantly higher than that of DTPA-^（99m）Tc（2.98%）, suggesting that uptake of the poly（HPMA）-DTPA-^（99m）T was passive *** data suggest that the poly（HPMA）-SDAPMA -DTPA conjugates might be useful as tumor targeting macromolecular conjugates.

关键词： Tumor targeting HepatoceUular carcinoma HPMA copolymer conjugates Radiotracer

Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes

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Water Science and Engineering 2013年第3期6卷 262-271页

作者： Yang XIAO Xiao-lian ZHU Hao-ke cheng Kai-jie LI Qi LU Dong-fang liang State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University College of Water Conservancy and Hydropower Engineering Hohai University National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety Hohai University Department of Engineering Mechanics Shanghai Jiao Tong University MOE Key Laboratory of Hydrodynamics Shanghai Jiao Tong University

The particle size of sediment is one of the main factors that influence the phosphorus physical adsorption on sediment. In order to eliminate the effect of other components of sediment on the phosphorus physical adsorption, the sediment mineral matrices were obtained by removing inorganic matter, metal oxides, and organic matter from natural sediments, which were collected from the Nantong reach of the Yangtze River. The results show that an exponential relationship exists between the median particle size （Ds0） and specific surface area （Sg） of the sediment mineral matrices, and the fine sediment mineral matrix sample has a larger specific surface area and pore volume than the coarse sediment particles. The kinetic equations were used to describe the phosphorus adsorption process of the sediment mineral matrices, including the Elovich equation, quasi-first-order adsorption kinetic equation, and quasi-second-order adsorption kinetic equation. The results show that the quasi-second-order adsorption kinetic equation has the best fitting effect. Using the mass conservation and Langmuir adsorption kinetic equations, a formula was deduced to calculate the equilibrium adsorption capacity of the sediment mineral matrices. The results of this study show that the phosphorus adsorption capacity decreases with the increase of Ds0, indicating that the specific surface area and pore volume are the main factors in determining the phosphorus adsorption capacity of the sediment mineral matrices. This study will help understand the important role of sediment in the transformation of phosphorus in aquatic environments.

关键词： sediment mineral matrix " particle size " specific surface area " pore volume phosphorus adsorption

Roles of Rho/Rock Signaling Pathway in Silica-induced Epithelial-mesenchymal Transition in Human Bronchial Epithelial Cells

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Biomedical and Environmental Sciences 2013年第7期26卷 571-576页

作者： HU Yong Bin LI Xiang liang Guan Nan DENG Zheng Hao jianG Hai Ying ZHOU jian Hua Department of Pathology Xiangya Basic Medical School Central South University

Objective To investigate the roles of Rho/Rock signaling pathway in silica-induced Epithelial-mesenchymal transition （EMT） in human bronchial epithelial cells （BEC） in vitro. Methods Human BEC were incubated with silica with various concentrations for indicated times. Cell viability was assayed by MTT test. Morphologic Changes were observed by microscope. Mesenchymal marker a-smooth muscle actin （a-SMA）, vimentin （Vim）, and epithelial marker E-cadherin （E-cad） were analyzed by Western Blot. The pull-down assay was used to measure Rho activity. In the prevention experiments, the specific inhibitor for Rho effector ROCK （Y27632） was used to inhibit the activity of Rho. Results Human BEC stimulated with silica were converted from a ＂cobblestone＂ epithelial structure into an elongated fibroblast-like shape structure. Incubation of human BEC with silica induced de novo expression of a-SMA and Vim, and loss of E-cad. Also, silica treatment resulted in Rho activation in human BEC. Y27632 up-regulated the E-cad expression but attenuated a-SMA and Vim expression in silica-stimulated cells. Conclusion The activation of Rho/ROCK signaling pathways is most likely involved in Silica-induced EMT in human bronchial epithelial cells.

关键词： Silica Bronchial epithelial cell Epithelial-to-mesenchymal transition Rho

Oxidation of alcohols to aldehydes and ketones using selenium ionic liquid

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Chinese Chemical Letters 2012年第7期23卷 801-804页

作者： Xian Yi cheng Kang Feng Li Qiao jian Wang Cong Ying Wang Tao Kai Ying College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321004China Institute of Physical Chemistry Zhejiang Normal UniversityJinhua 321004China

A new type of ionic liquid supported selenium reagents were synthesized and found to be an excellent catalyst in the oxidation of alcohols to aldehydes and ketones in the presence of 30%H_2O_*** predictable solubility of ionic liquids allows an easy separation of the oxidation products from the reaction ***,the oxidation reaction can be carried out using an ionic liquid as the solvent,and the ionic liquid-supported selenium reagents can be recycled and used for four times with a little decrease in catalytic performance.

关键词： Selenium ionic liquids Aldehydes Ketones Oxidation

Where is the optimal plane to mobilize the anterior rectal wall in female patients undergoing total mesorectal excision?

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World Journal of Gastroenterology 2023年第19期29卷 2992-3002页

作者： Wei Jin Jun Yang Xin-Yu Li Wei-cheng Wang Wen-jian Meng You Li Yi-Chao liang Yi-Ming Zhou Xin-Dong Yang Yang-Yang Li Shao-Tang Li Department of Colorectal and Anal Surgery The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina Department of Gastrointestinal Surgery The First Hospital of Quanzhou Affiliated to Fujian Medical UniversityQuanzhou 362002Fujian ProvinceChina Department of Gastrointestinal Surgery West China Hospital.Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of General Surgery Shanghai Jiao Tong University Medical School Affiliated RuijinShanghai 201800China Department of General Surgery Shengjing Hospital of China Medical UniversityShenyang 111300Liaoning ProvinceChina Department of General Surgery Huashan Hospital Fudan UniversityShanghai 201800China School of Basic Medicine Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina Department of Pathology the First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina National Key Clinical Specialty(General Surgery) The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina

BACKGROUND Since Heald proposed the total mesorectal excision(TME)procedure,the prognosis of patients with rectal cancer has been significantly *** Heald did not specifically describe the anterior surgical plane in female *** the surgical plane for mobilizing the anterior rectal wall during TME surgery in female patients remains *** To investigate the anatomy of the female pelvis and identify the optimal plane for mobilizing the anterior rectal *** We retrospectively collected surgical procedure videos and clinical data of female patients diagnosed with middle or low rectal cancer who underwent the TME procedure between January 2020 and October 2022 across six *** patients were divided into two groups based on the surgical approach used to mobilize the anterior rectal wall:The experimental group was to open the peritoneum at the lowest point of the peritonea reflection and enter the plane for mobilizing,while the control group was cut at 0.5-1 cm above the peritoneal reflection and enter another ***,we compared the preoperative and postoperative information between the two *** also dissected and observed ten adult female pelvises to analyze the anatomic structure and compare the entry plane between the two ***,we researched the pathological structure between the rectum and the *** Finally,77 cases that met the criteria were included in our *** observations revealed that the experimental group underwent a smooth procedure,entering the plane amidst the mesorectal fascia and adventitia of the vagina,whereas the control group entered the plane between the vaginal adventitia and muscle *** to the control group,the experimental group showed a significant decrease in intraoperative bleeding[22.5(19.5-50)mL vs 17(5-20)mL,P=0.01],as well as a shorter duration of hospitalization[9(7-11.25)d vs 7(6-10)d,P=0.03].Through the examination of surgical videos and cadaveric stud

关键词： Rectal cancer Procedure Female Rectal surgery specialty Fascia Laparoscopic

硝化抑制剂对湖南紫潮泥田紫云英-稻秸还田后水稻产量及镉吸收的影响

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中国土壤与肥料 2024年第5期 103-112页

作者：谢建成聂军王赟周国朋廖育林鲁艳红高嵩涓曹卫东南京农业大学资源与环境科学学院江苏南京210095 湖南省土壤肥料研究所湖南长沙410125 洛阳市林业生态建设发展中心河南洛阳471099 中国农业科学院农业资源与农业区划研究所/北方干旱半干旱耕地高效利用全国重点实验室北京100081

研究紫云英-水稻制度下,稻秸还田和硝化抑制剂对水稻生长和镉(Cd)吸收的影响,为湖南双季稻田基于绿肥的稻米安全生产措施提供理论支撑。池栽微区试验设4个处理:紫云英(GM)、紫云英+化肥(GF)、紫云英+稻秸+化肥(GRF)、紫云英+稻秸+化肥+... 详细信息

研究紫云英-水稻制度下,稻秸还田和硝化抑制剂对水稻生长和镉(Cd)吸收的影响,为湖南双季稻田基于绿肥的稻米安全生产措施提供理论支撑。池栽微区试验设4个处理:紫云英(GM)、紫云英+化肥(GF)、紫云英+稻秸+化肥(GRF)、紫云英+稻秸+化肥+硝化抑制剂(GRFD)。分析了不同措施下的水稻产量与养分积累、稻米Cd吸收、土壤肥力及土壤Cd有效性和形态。相比GRF处理,GRFD处理早稻籽粒和稻秸产量分别增加7.0%和12.2%。GRFD处理下,早稻籽粒氮、磷、钾养分累积量较GRF处理分别增加5.5%、10.1%、6.8%。GF、GRF、GRFD处理早稻籽粒Cd含量较GM处理分别降低64.8%、67.3%、66.8%。GRFD处理早稻可溶性有机碳和可溶性有机氮含量,相比GRF处理分别降低41.2%和8.0%。GRFD处理早稻和晚稻土壤有效态Cd含量,相比GRF处理分别降低70.9%和66.0%,相比GF处理分别降低80.2%和61.4%;GRFD处理晚稻土壤可氧化态Cd含量相比GRF处理增加了52.6%,表明紫云英-稻秸-硝化抑制剂联合利用通过将土壤Cd转变为难以被水稻吸收的形态而降低其有效性。随机森林与相关性表明,早、晚稻速效钾与有效磷在限制水稻吸收Cd中均起到了关键作用。在紫云英-稻秸联合还田条件下,配施硝化抑制剂可提高水稻产量、促进水稻养分吸收,同时通过增加土壤速效钾和有效磷含量,进而减少水稻对Cd的吸收。

关键词：紫云英稻秸产量 Cd有效性紫潮泥

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