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机械工程材料 1985年第3期12卷 -页

作者：陆在庆徐国庆崔润炯张家泉

本文概述了微合金中碳钢的主要特点,它是以消除中碳钢调质处理为目标的新型节能钢材。文中探讨了强韧化机理:分析了微量元素V、Nb、Ti等的作用规律;提出改善韧性的主要措施。本文论述了高韧性非调质钢Mn-V-N系的研制,展望了应用前景。

关键词：微合金中碳钢 Mn 溶解度积沉淀相强化(金属学) 非调质钢 γ固溶体金相相组成奥氏体

关节镜下可吸收半月板箭修复膝关节半月板损伤106例疗效观察

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中国运动医学杂志 2006年第2期25卷 142-146页

作者：余家阔于长隆敖英芳王健全崔国庆胡跃林江东苗羽北京大学第三医院运动医学研究所北京100083

目的：观察总结关节镜下可吸收半月板箭修复损伤半月板的术后疗效及术后并发症.对象与方法：采用镜下可吸收半月板箭复位固定法,对106例患者的108个损伤半月板进行修复.通过症状、体征、Tegner和Lysholm评分对半月板缝合修复的临床效果... 详细信息

目的：观察总结关节镜下可吸收半月板箭修复损伤半月板的术后疗效及术后并发症.对象与方法：采用镜下可吸收半月板箭复位固定法,对106例患者的108个损伤半月板进行修复.通过症状、体征、Tegner和Lysholm评分对半月板缝合修复的临床效果及术后并发症进行了观察,对术后有明显症状、体征的患者进行了关节镜探查.结果：术后随访106例、1～9.5年（平均26±12.3个月）.Tegner评分术后（7.65±2.54）较术前（3.55±1.59）有显著性差异（P＜0.001）.Lysholm评分术后（88.55±25.64）较术前（35.46±14.62）有显著性差异（P＜0.001）.疗效优61只半月板,占56.5％;良35只半月板,占32.4％;可8只半月板,占7.4％;差4只半月板,占3.7％.总优良率为88.9％.对术后有症状和体征的14例患者进行关节镜再探查,发现4例未愈合,5例部分愈合.术后并发症包括半月板箭固定处的后关节囊刺痛5例.无严重的血管神经损伤,106例患者术后并发症总发生率4.72％.结论：关节镜下可吸收半月板箭修复半月板损伤手术成功率较高,术中和术后风险较小.

关键词：半月板可吸收半月板箭关节镜修复膝关节半月板损伤

肩袖补片的治疗现状及研究进展:Meta分析与文献综述

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中华肩肘外科电子杂志 2023年第3期11卷 258-268页

作者：施澄熙李昊岳吴兴源邵振兴崔国庆北京大学第三医院运动医学科、运动医学研究所、北京市运动创伤重点实验室 100191

目的分析近年针对肩袖损伤行肩袖补片或非补片修复手术的对照试验,对治疗效果进行Meta分析,为选择恰当的手术方式提供参考;回顾近五年(2018~2022年)有关肩袖补片的研究,并比较不同补片类型之间的差异,探究不同补片的临床应用场景,揭示... 详细信息

目的分析近年针对肩袖损伤行肩袖补片或非补片修复手术的对照试验,对治疗效果进行Meta分析,为选择恰当的手术方式提供参考;回顾近五年(2018~2022年)有关肩袖补片的研究,并比较不同补片类型之间的差异,探究不同补片的临床应用场景,揭示未来的研究方向。方法在文献数据库PubMed、Web of Science、中国知网中筛选相关文献,提取数据,采用Revman5.4进行Meta分析,比较肩袖补片手术与常规修复手术的临床结局,进行系统评价。结果共筛选出9篇文献进行Meta分析。与对照组相比,肩袖补片组的再撕裂率显著降低[OR=0.18,95%CI(0.09,0.35),P<0.00001];术后0~12个月、24个月及以上的随访中视觉模拟评分均无显著差异[MD=-0.28,95%CI(-1.00,0.44),P=0.45]、[MD=-1.72,95%CI(-3.82,0.37),P=0.11];术后6个月、24个月及以上随访的Constant-Murley肩关节评分均有显著提高[MD=2.68,95%CI(1.23,4.13),P=0.0003]、[MD=1.38,95%CI(0.22,2.54),P=0.02],但术后12个月随访的Constant-Murley肩关节评分无显著差异[MD=1.53,95%CI(-1.74,4.81),P=0.36];术后0~12个月、24个月及以上美国肩肘协会评分均无显著差异[MD=1.84,95%CI(-1.60,5.29),P=0.29]、[MD=6.83,95%CI(-0.10,13.77),P=0.05];术后0~12个月西安大略肩袖疾病评分指数无显著差异[MD=3.25,95%CI(-15.45,21.94),P=0.73],但术后24个月及以上西安大略肩袖疾病评分指数显著提高[MD=15.45,95%CI(1.50,29.34),P=0.03];术后肩关节前屈及外旋均无显著差异[MD=6.26,95%CI(-9.52,22.03),P=0.44]、[MD=-5.29,95%CI(-10.66,0.08),P=0.05]。结论补片修复能够提高肩袖撕裂修复的临床结局,降低再撕裂率。补片类型和手术技术的选择还有待进一步的临床研究。

关键词：肩袖补片 Meta分析肩袖撕裂肌腱-骨界面

30例冬季项目运动员前交叉韧带损伤的临床表现特点

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中国运动医学杂志 2020年第10期39卷 760-763页

作者：赵逢源陈拿云蒋艳芳张家豪张继英胡晓青崔国庆敖英芳北京大学第三医院运动医学研究所北京市运动医学关节伤病重点实验室北京100191

目的:研究我国冬季项目运动员前交叉韧带(ACL)损伤的临床表现特点,并提出了防治原则。方法:选取北京大学第三医院运动医学研究所2010年1月1日至2017年12月31日住院治疗的30例冬季项目运动员前交叉韧带损伤病例作为研究对象。查阅既往电... 详细信息

目的:研究我国冬季项目运动员前交叉韧带(ACL)损伤的临床表现特点,并提出了防治原则。方法:选取北京大学第三医院运动医学研究所2010年1月1日至2017年12月31日住院治疗的30例冬季项目运动员前交叉韧带损伤病例作为研究对象。查阅既往电子病历,记录研究对象的基本信息和病史,包括受伤情况、初次医疗处理情况和症状体征。查阅患者受伤后患膝MRI,评估患者受伤情况与合并损伤。查阅患者手术记录,结合术中关节镜录像评估患者合并损伤并确认手术方式。结果:30例前交叉韧带损伤病例,年龄19.76±4.06岁,其中女性病例20例。30例前交叉韧带损伤病例中有17例(56.7%)初诊诊断正确,另外13例并未诊断出ACL损伤。前交叉韧带损伤合并关节内其他结构损伤20例,占66.7%。前交叉韧带损伤合并外侧半月板损伤病例的手术间隔时间明显短于合并内侧半月板损伤的病例(P=0.032)。初次受伤到手术的时间间隔范围是8天~1000天,平均170.70±251.36天。30例前交叉韧带损伤病例术后均恢复原有运动水平,取得了良好的运动成绩。结论:冬季项目运动员前交叉韧带损伤多合并膝关节其它结构损伤,具有较高的危害性。需提高基层运动队队医对前交叉韧带损伤的诊疗水平,做到早诊断早治疗,使用微创手术的方法重建膝关节稳定性。

关键词：冬季项目运动员前交叉韧带损伤临床特点

Lithofacies Characters and Significance of the Submarine Fan of the Liufengguan Group in Qinling

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Acta Geologica Sinica(English Edition) 2012年第1期86卷 174-188页

作者： ZHENG Ning LI Tingdong YOU guoqing ZHANG Shuanhou cui Jiantang CHENG Muwei Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Shaanxi Institute of Geological Survey Xi'an 710065ShaanxiChina Research Institute of Petroleum Exploration and Development Beijing 100083China

Field investigation and laboratory research on flysch of the Liufengguan Group in Qinling indicate the following：（1） Sandstone of the Liufengguan Group is categorized as feldspathic lithic graywacke with a minor amount of lithic graywacke in the QFR triangular diagram. Grain size〈0.3 mm. Bedding plane structures such as groove casts and suspected flute casts can be found at the bottom of the sandstone. It is inferred that currents may have come from the southeast during deposition. Bedding structures such as ripple marks, graded bedding, parallel bedding, small-scale cross bedding, climbing bedding, suspected convolute bedding, microlamination and sliding structures have also been observed, which are of indicative significance. It is thought that the Liufengguan Group has the sedimentary characteristics of bedding, bedding plane structures and lithologicai assemblages of deep-sea low-density turbidity current deposits. The vertical succession of the Bouma sequence in the inner fan subfacies zone is generally incomplete： the assemblage of Ta and Tabc is commonly seen; the succession of the middle fan subfacies zone is relatively complete; and divisions Te and Tb are common in the outer fan subfacies zone. （2） The flysh of the Liufengguan Group is a sequence of deep-sea argillaceous-arenaceous submarine fan deposits, in which the authors recognize the inner, middle and outer fan subfacies and also nine types of lithofacies： normal graded sandstone （A1）, medium- to thick-bedded, fine-grained sandstone （A2）, medium- to thick-bedded and massive siltstone （A3）, thin-bedded, fine-grained sandstone and mudstone （B1）, irregular interbeds of thinbedded, fine-grained sandstone and siltstone （B2）, thin-bedded, fine-grained sandstone （C1）, very thin-bedded, fine-grained sandstone （D1）, olistostromes （El） anddeep-sea mudstone （F）. The inner fan consists of four microfacies： natural levee （A1）, water channel （A2, A3） and olistostrome （El）; in the middle fan there also occur four

关键词： Liufengguan Group flysh lithofacies low-density turbidity current submarine fan

Properties of oxide films grown on 25Cr20Ni alloy in air-H_2O and H_2-H_2O atmospheres

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Petroleum Science 2014年第1期11卷 147-154页

作者： Wang Shenxiang cui Lishan Wang guoqing Zheng Yanjun Wang Hongxia Jia Jingsheng College of Science China University of Petroleum Beijing Research Institute of Chemical Industry

The oxidation kinetics,surface morphology and phase structure of oxide films grown on 25Cr20Ni alloy in air-H2O and H2-H2O atmospheres at 900 ℃ for 20 h were *** anti-coking performance and resistance to carburization of the two oxide films were compared using 25Cr20Ni alloy tubes with an inner diameter of 10 mm and a length of 850 mm in a bench scale naphtha steam pyrolysis *** oxidation kinetics followed a parabolic law in an air-H2O atmosphere and a logarithm law in a H2-H2O atmosphere in the steady-state *** oxide film grown in the air-H2O atmosphere had cracks where the elements Fe and Ni were enriched and the un-cracked area was covered with octahedral-shaped MnCr2O4 spinels and Cr1.3Fe0.7O3 oxide clusters,while the oxide film grown in the H2-H2O atmosphere was intact and completely covered with dense standing blade MnCr2O4 *** the pyrolysis tests,the anti-coking performance and resistance to carburization of the oxide film grown in the H2-H2O atmosphere were far better than that in the air-H2O *** mass of coke formed in the oxide film grown in the H2-H2O atmosphere was less than 10％ of that in the air-H2O *** Cr1.3Fe0.7O3 oxide clusters converted into Cr23C6 carbides and the cracks were filled with carbon in the oxide film grown in the air-H2O atmosphere after repeated coking and decoking tests,while the dense standing blade MnCr2O4 spinels remained unchanged in the oxide film grown in the H2-H2O *** ethylene,propylene and butadiene yields in the pyrolysis tests were almost the same for the two oxide films.

关键词： 25Cr20Ni alloy air-H2O H2-H2O oxide film anti-coking resistance to carburization

Robust Core Tensor Dictionary Learning with Modified Gaussian Mixture Model for Multispectral Image Restoration

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Computers, Materials & Continua 2020年第10期65卷 913-928页

作者： Leilei Geng Chaoran cui Qiang Guo Sijie Niu guoqing Zhang Peng Fu School of Computer Science and Technology Shandong University of Finance and EconomicsJinan250014China School of Computer Science and Engineering University of JinanJinan250024China School of Computer Science and Engineering Nanyang Technological University639798Singapore School of Computer Science and Engineering Nanjing University of Science and TechnologyNanjing210094China

The multispectral remote sensing image(MS-RSI)is degraded existing multi-spectral camera due to various hardware *** this paper,we propose a novel core tensor dictionary learning approach with the robust modified Gaussian mixture model for MS-RSI ***,the multispectral patch is modeled by three-order tensor and high-order singular value decomposition is applied to the *** the task of MS-RSI restoration is formulated as a minimum sparse core tensor estimation *** improve the accuracy of core tensor coding,the core tensor estimation based on the robust modified Gaussian mixture model is introduced into the proposed model by exploiting the sparse distribution prior in *** applied to MS-RSI restoration,our experimental results have shown that the proposed algorithm can better reconstruct the sharpness of the image textures and can outperform several existing state-of-the-art multispectral image restoration methods in both subjective image quality and visual perception.

关键词： Multispectral remote sensing image restoration modified Gaussian mixture sparse core tensor tensor dictionary learning

Tu-Xian Decoction ameliorates diabetic cognitive impairment by inhibiting DAPK-1

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Chinese Journal of Natural Medicines 2023年第12期21卷 950-960页

作者： WANG Danyang YAN Bin WANG An SUN Qing PANG Junyi cui Yangming TIAN guoqing Department of Traditional Chinese Medicine Peking Union Medical College HospitalBeijing 100730China Chinese Academy of Mediucal Sciences&Peking Union Medical College Beijing 100730China Department of Pathology Peking Union Medical College HospitalState Key Laboratory of Complex Severe and Rare DiseaseMolecular Pathology Research CenterBeijing 100730China Animal Research Laboratory Platform Peking Union Medical College Hospitalthe National Science and Technology Key Infrastructure on Translational MedicineBeijing 100730China

Tu-Xian decoction(TXD),a traditional Chinese medicine(TCM)formula,has been frequently administered to manage diabetic cognitive impairment(DCI).Despite its widespread use,the mechanisms underlying TXD’s protective effects on DCI have yet to be fully *** a significant regulator in neurodegenerative conditions,death-associated protein kinase-1(DAPK-1)serves as a focus for understanding the action of *** study was designed to whether TXD mediates its beneficial outcomes by inhibiting *** this end,a diabetic model was established using Sprague-Dawley(SD)rats through a high-fat,high-sugar(HFHS)diet regimen,followed by streptozotocin(STZ)*** experimental cohort was stratified into six groups:Control,Diabetic,TC-DAPK6,high-dose TXD,medium-dose TXD,and low-dose TXD *** a 12-week treatment period,various assessments—including blood glucose levels,body weight measurements,Morris water maze(MWM)testing for cognitive function,brain magnetic resonance imaging(MRI),and histological analyses using hematoxylin-eosin(H&E),and Nissl staining—were *** expression in the hippocampus was quantified through Western blotting *** results revealed that TXD significantly improved spatial learning and memory abilities,and preserved hippocampal structure in diabetic ***,TXD administration led to a down-regulation of proteins indicative of neurological damage and suppressed DAPK-1 activity within the hippocampal *** results underscore TXD's potential in mitigating DCI via DAPK-1 inhibition,positioning it as a viable therapeutic candidate for addressing this *** investigation into TXD's molecular mechanisms may elucidate new pathways for the treatment of DCI.

关键词： Tu-Xian decoction Traditional Chinese medicine Diabetes complications Diabetic cognitive impairment Death associated protein kinase-1

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糖尿病大鼠盂肱关节活动度变化的测量研究

中国运动医学杂志 2009年第3期28卷 293-296,292页

作者：刘玉雷敖英芳崔国庆唐朝枢张靓娄利霞周业波朱敬先赵峰北京大学第三医院运动医学研究所北京100191 北京大学医学部生理学系北京100191

目的:应用一种新的测量大鼠盂肱关节活动范围(ROM)的方法测量糖尿病大鼠盂肱关节活动度,建立与探讨糖尿病性冻结肩的动物实验研究方法。方法:9只雄性SD大鼠随机分为糖尿病组(n=5)和对照组(n=4),糖尿病组予高果糖饮食,对照组予正常饮食... 详细信息

目的:应用一种新的测量大鼠盂肱关节活动范围(ROM)的方法测量糖尿病大鼠盂肱关节活动度,建立与探讨糖尿病性冻结肩的动物实验研究方法。方法:9只雄性SD大鼠随机分为糖尿病组(n=5)和对照组(n=4),糖尿病组予高果糖饮食,对照组予正常饮食。12周时进行口服糖耐量试验,13周时测空腹血糖、血胰岛素、甘油三酯浓度和计算稳态模型指数(HOMA-R),同时取材测量每只鼠双侧盂肱关节的外展、内收、外展0度位和90度位内外旋的角度,计算并比较两组大鼠盂肱关节冠状面、水平面和矢状面的活动范围。结果:(1)糖尿病组大鼠糖耐量受损,空腹血糖、血胰岛素、甘油三酯浓度和HOMA-R较对照组显著升高。(2)糖尿病组大鼠盂肱关节活动度平均值在冠状面下降14.6%,在矢状面下降22.8%,有统计学意义(P值分别为0.007和0.031),水平面下降20.4%,但差别不显著(P=0.077)。(3)糖尿病组大鼠10个盂肱关节中有2个(20%)在3个平面活动度同时下降。(4)糖尿病组双侧盂肱关节在3个关节活动平面的ROM均无统计学差别。结论:长期高果糖饮食喂养大鼠会出现类似2型糖尿病的表现,同时双侧盂肱关节活动范围均会下降,其中对外展90度位旋转活动影响较大。

关键词：盂肱关节糖尿病大鼠关节活动度

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JD-502冷原子吸收测汞仪

吉林大学自然科学学报 1979年第3期 71-76页

作者：汤国庆温陵生崔玉明杨永华荆维杰吉林大学化学系

本文简述了冷原子吸收测汞仪的基本原理和设计思想,详细介绍了JD-502的结构、性能和应用,给出了与气相色谱分离柱联用分析氯化甲基汞的绝对灵敏度为1×10-11克。

关键词：测汞仪汞蒸汽测量仪冷原子吸收 JD-502