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风机结构在地震作用与风荷载下多灾害响应分析
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作者 王文明 马会超 +1 位作者 满银 聂配程 《山东建筑大学学报》 2025年第5期13-21,共9页
随着风能需求的增加,风力发电场逐渐扩张至风力较强的地震多发区,当陆上风机遭遇地震作用时,一般需同时承受风荷载,因此有必要研究其结构在地震作用和风荷载下的多灾害响应。文章以山西某在役风机为研究对象,分析其发生地震作用-风荷载... 随着风能需求的增加,风力发电场逐渐扩张至风力较强的地震多发区,当陆上风机遭遇地震作用时,一般需同时承受风荷载,因此有必要研究其结构在地震作用和风荷载下的多灾害响应。文章以山西某在役风机为研究对象,分析其发生地震作用-风荷载多灾害概率,建立有限元模型,选取3组天然地震波,分别分析风机结构在地震作用、地震作用-风耦合作用下的响应,以研究风荷载对风机结构地震响应的影响规律。结果表明:随着风速的增加,结构响应增大趋势明显,而随着地震峰值加速度的增加,风荷载对结构地震响应的影响有减小趋势,表明风电塔结构的响应控制作用由风荷载向地震荷载转移。 展开更多
关键词 风机结构 概率密度 地震作用 风荷载 多灾害响应
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软土地区架空输电线路微型沉井基础承载特性试验研究 被引量:5
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作者 满银 余亮 +1 位作者 刘洋 唐继朋 《工业建筑》 CSCD 北大核心 2019年第4期58-63,75,共7页
针对架空输电线路工程杆塔基础的荷载特点和软土地区的特殊地质条件,开展了微型沉井基础在上拔、下压、水平、上拔与水平联合荷载工况下的承载特性真型试验研究,将得到的微型沉井基础极限承载力与理论设计值进行了对比分析,两者结果比... 针对架空输电线路工程杆塔基础的荷载特点和软土地区的特殊地质条件,开展了微型沉井基础在上拔、下压、水平、上拔与水平联合荷载工况下的承载特性真型试验研究,将得到的微型沉井基础极限承载力与理论设计值进行了对比分析,两者结果比较接近,表明相关理论计算公式和参数取值是可行的,分析结果验证了微型沉井基础设计选型的合理性和可靠性。 展开更多
关键词 软土地区 架空输电线路 微型沉井基础 承载特性 极限承载力
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中空基础在输电线路黄土地基中的承载特性 被引量:2
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作者 樊文伟 满银 +1 位作者 丁士君 郑宏 《科学技术与工程》 北大核心 2018年第19期272-276,共5页
随着杆塔基础承担的载荷不断增大,黄土地区常用的挖孔灌注桩呈现直径大、埋深大的工程特征,大大削弱了其经济性和环保性。联想到筒桩基础良好的工程性能,结合输电线路自身的行业特点和黄土的土质特性,提出了应用于黄土地区的中空基础。... 随着杆塔基础承担的载荷不断增大,黄土地区常用的挖孔灌注桩呈现直径大、埋深大的工程特征,大大削弱了其经济性和环保性。联想到筒桩基础良好的工程性能,结合输电线路自身的行业特点和黄土的土质特性,提出了应用于黄土地区的中空基础。而对于中空基础的理论计算,没有现成的计算公式可以应用。基于单桩基础的内力和承载力理论计算方法,分析了中空基础相应的理论计算方法。利用数值模拟和现场原位试验,阐述了该理论计算方法的合理性,为中空基础的工程应用和设计提供参考;同时,现场原位试验表明中空基础承载力远远大于相应线路的设计值,可在工程中进行试点推广应用。 展开更多
关键词 中空基础 输电线路 黄土 桩身内力 承载力
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基于神经网络的板墙组合式固化土地基承载力计算方 法与优化设计 被引量:3
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作者 周灵刚 胡奕挺 +6 位作者 陈欣蔚 屠锋 吴朝峰 于洋 王彦兵 满银 李维朝 《地质科技通报》 CAS CSCD 北大核心 2024年第6期102-113,共12页
软土固化技术在地基处理中应用广泛,为发挥其空间可塑性优势,板墙组合式固化土地基逐步在工程中得到应用。然而,板墙组合式固化土地基承载力尚无可靠计算方法,叠加固化土与软土力学参数不确定性,导致板墙组合式固化土地基优化设计困难,... 软土固化技术在地基处理中应用广泛,为发挥其空间可塑性优势,板墙组合式固化土地基逐步在工程中得到应用。然而,板墙组合式固化土地基承载力尚无可靠计算方法,叠加固化土与软土力学参数不确定性,导致板墙组合式固化土地基优化设计困难,需要提出一种板墙组合式固化土地基承载力计算及优化设计方法。以浙江省台州市经纬110 kV滨海变电站场地为研究对象,测试固化土与软土力学参数,建立数值模型计算板墙组合式地基承载力,以此为基础训练神经网络模型,作为板墙组合式固化土地基承载力计算模型,为工程应用提供便利。引入岩土工程鲁棒性设计理论,采用蒙特卡洛模拟处理固化土与软土力学参数不确定性,以标准差作为鲁棒性评价指标评估不确定性对设计的影响,以固化土地基截面面积近似表征工程造价,实现考虑经济性和鲁棒性的固化土地基优化设计。将设计方法应用于工程实例,得到最优设计方案为固化板厚度P=2 m、固化墙深度W=3 m、固化墙厚度D=1.5 m、固化墙净间距S=1 m,为工程设计提供参考。本研究提出的板墙组合式固化土地基承载力计算模型及优化设计方法为相关工程计算和设计提供新思路和新方法。 展开更多
关键词 固化土地基 神经网络 承载力 鲁棒性设计 软土固化 板墙组合
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Impact renaming non-alcoholic fatty liver disease to metabolic associated fatty liver disease in prevalence,characteristics and risk factors 被引量:3
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作者 Xin-Juan Huang man yin +3 位作者 Bing-Qian Zhou Xin-Yun Tan Yuan-Qin Xia Chun-Xiang Qin 《World Journal of Hepatology》 2023年第8期985-1000,共16页
BACKGROUND Recently,a group of hepatologists proposed to rename non-alcoholic fatty liver disease(NAFLD)as metabolic associated fatty liver disease(MAFLD)with modified diagnostic criteria.It is important to note,howev... BACKGROUND Recently,a group of hepatologists proposed to rename non-alcoholic fatty liver disease(NAFLD)as metabolic associated fatty liver disease(MAFLD)with modified diagnostic criteria.It is important to note,however,that there are some differences between the diagnostic criteria used for NAFLD and MAFLD.Since the research on MAFLD is just beginning,however,evidence on its incidence and prevalence in the general population and in specic subpopulations remains limited.AIM To assess epidemiology of fatty liver in new definition and compare MAFLD with NAFLD.Exploring risk factors of MAFLD individuals.METHODS This was a retrospective,cross-sectional study.A total of 85242 adults were selected from the Chinese health management database in 2017–2022.The data of general information,laboratory indicators,lifestyle management and psychological status were obtained.MAFLD was diagnosed as ultrasound diagnosis of fatty liver and at least one between these three conditions:Overweight/obesity,type 2 diabetes mellitus(T2DM)or metabolic dysregulation.Metabolic factors were not considered in NAFLD diagnosis standard.The clinical characteristics of MAFLD and NAFLD were analysed using descriptive statistics.Continuous variables normally distributed were expressed as means±SD.Categorical variables were expressed as frequencies and proportions.Binary logistic regression was used to determine risk factors of the MAFLD.RESULTS The prevalence of MAFLD and NAFLD was 40.5%and 31.0%,respectively.The MAFLD or NAFLD population is more likely to be older(M:47.19±10.82 vs 43.43±11.96;N:47.72±11.17 vs 43.71±11.66),male(M:77.21%vs 44.43%;N:67.90%vs 53.12%)and high body mass index(M:26.79±2.69 vs 22.44±2.48;N:26.29±2.84 vs 23.29±3.12)than the non-MAFLD or non-MAFLD population.In multivariate analysis,general information(e.g.,≥2 metabolic abnormalities OR=3.38,(95%CI:2.99-3.81),P<0.001;diastolic blood pressure OR=1.01,(95%CI:1.00–1.01),P=0.002),laboratory results[e.g.,total bilirubin(TBIL)OR=0.98,(95%CI:0.98-0.99),P<0.001;serum uric acid(SUA)OR=1.01,(95%CI:1.01-1.01),P<0.001],and lifestyle factors[e.g.,drink beverage OR=0.32,(95%CI:0.17-0.63),P=0.001]were influence factors for MAFLD.Our study results offer new insight into potential risk factors associated with fatty liver disease,including SUA,TBIL and creatinine,all of which are related to chronic renal disease(CKD).CONCLUSION MAFLD is more prevalent than NAFLD,with two-fifths of individuals meeting the diagnosis criteria.MAFLD and NAFLD populations have different clinical characteristics.CKD may be related with MAFLD. 展开更多
关键词 Metabolic(dysfunction)-associated fatty liver disease Non-alcoholic fatty liver disease Epidemiology Risk factors CHARACTERISTICS Cross-section study
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玄武岩-混凝土界面抗剪性能的影响因素及特征分析 被引量:1
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作者 丁士君 丁民涛 +1 位作者 满银 聂治豹 《工业建筑》 北大核心 2023年第1期194-200,共7页
为研究玄武岩-混凝土界面抗剪性能的影响因素及特征,设计了一种用于测试该性能的试验装置。采用同一场地的玄武岩和C20、C30混凝土试件,开展30组试件岩-混柱形的界面室内模型剪切试验。根据试验获得的荷载-位移曲线,确定极限抗剪承载力... 为研究玄武岩-混凝土界面抗剪性能的影响因素及特征,设计了一种用于测试该性能的试验装置。采用同一场地的玄武岩和C20、C30混凝土试件,开展30组试件岩-混柱形的界面室内模型剪切试验。根据试验获得的荷载-位移曲线,确定极限抗剪承载力,并计算获得了界面抗剪强度平均值。将试验结果归一化处理后,研究了接触面尺度因素、混凝土设计强度等级和龄期、岩石完整性对界面抗剪性能的影响。试验结果表明:该装置能够有效模拟并试验测试岩石与混凝土界面的抗剪性能;接触面积与模型剪切承载力呈正相关,但与剪切面的高度或直径相关性不大,岩样高度越大则强度试验统计变异系数越小;90%置信概率下,混凝土养护7 d后,混凝土设计强度等级与界面抗剪强度变化不明显;混凝土龄期不大于7 d时其对界面强度有一定的正向影响,龄期增大可降低剪切强度时的极限位移;岩石完整性越好,则岩石与混凝土界面抗剪强度越高。 展开更多
关键词 玄武岩-混凝土接触面 剪切性能 影响因素 模型试验
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回弹法的测量不确定度评定 被引量:2
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作者 吴至复 满银 +1 位作者 方瑶 周佳成 《结构工程师》 2021年第2期72-77,共6页
测量结果需包含被测量的值及相应的测量不确定度,才是完整并有意义的。但《回弹法检测混凝土抗压强度技术规程》(JGJ/T 23—2011)只给出了混凝土强度的推定方法,而未考虑其测量不确定度;此外,JGJ/T 23—2011的推定方法是基于大样本统计... 测量结果需包含被测量的值及相应的测量不确定度,才是完整并有意义的。但《回弹法检测混凝土抗压强度技术规程》(JGJ/T 23—2011)只给出了混凝土强度的推定方法,而未考虑其测量不确定度;此外,JGJ/T 23—2011的推定方法是基于大样本统计原理给出的,而实际工程的测区数往往达不到大样本抽样的标准。基于此,结合测量不确定度基本原理,探讨了回弹法不确定度的来源及处理办法,研究了回弹法强度换算值的扩展不确定度,提出了反映测量不确定度的混凝土强度推断公式,最后结合具体算例说明了本文方法的优越性。 展开更多
关键词 回弹法 测量不确定度 强度推断
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输电线路装配式基础用轻骨料混凝土试验研究 被引量:1
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作者 满银 朱振洋 《山西建筑》 2024年第5期114-116,184,共4页
针对输电线路装配式基础预制构件自重和工作环境服役的使用要求,开展了人造页岩陶粒、天然浮石两种粗骨料类别的轻骨料混凝土力学和耐久性能试验研究。室内试验结果表明轻骨料混凝土的力学和耐久性能指标良好,可以在输电线路装配式基础... 针对输电线路装配式基础预制构件自重和工作环境服役的使用要求,开展了人造页岩陶粒、天然浮石两种粗骨料类别的轻骨料混凝土力学和耐久性能试验研究。室内试验结果表明轻骨料混凝土的力学和耐久性能指标良好,可以在输电线路装配式基础中进行试点应用;与浮石轻骨料混凝土相比,陶粒轻骨料混凝土的耐久性能优势更加明显。 展开更多
关键词 轻骨料混凝土 力学性能 耐久性能 装配式基础 输电线路
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都安高速公路T31标隧道钻爆设计施工方案研究 被引量:1
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作者 满银 李洪建 孟庆生 《黑龙江交通科技》 2019年第7期172-174,共3页
针对贵州省都安高速公路T31标段地质、水文等客观条件,对其公路隧道的钻爆方案进行了设计,包括不同围岩级别的炮眼布置、爆破参数和起爆顺序的设计,此外还给出了隧道的施工原则和方案,包括爆破开挖施工工艺流程图和新奥法施工工艺流程图... 针对贵州省都安高速公路T31标段地质、水文等客观条件,对其公路隧道的钻爆方案进行了设计,包括不同围岩级别的炮眼布置、爆破参数和起爆顺序的设计,此外还给出了隧道的施工原则和方案,包括爆破开挖施工工艺流程图和新奥法施工工艺流程图,研究成果对类似的工程项目具有重要的参考价值和意义。 展开更多
关键词 钻爆 参数 设计方案 施工
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输电线路开挖回填基础试验及质量检测研究 被引量:1
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作者 郑卫锋 满银 +1 位作者 张金龙 高超 《电力勘测设计》 2020年第11期69-72,共4页
输电线路开挖回填类基础采用土重法进行上拔稳定计算,土体重度及上拔角等关键设计参数与回填土质量密切相关,直接影响上拔承载性能。目前回填土质量控制及检测方法无明确标准,通过在风积沙、粉土地质条件下开展开挖类装配式基础的承载... 输电线路开挖回填类基础采用土重法进行上拔稳定计算,土体重度及上拔角等关键设计参数与回填土质量密切相关,直接影响上拔承载性能。目前回填土质量控制及检测方法无明确标准,通过在风积沙、粉土地质条件下开展开挖类装配式基础的承载性能现场试验与土工试验,提出开挖回填类基础的施工质量控制标准,为其安全稳定运行提供技术支撑。 展开更多
关键词 输电线路 开挖回填类基础 抗拔承载力 质量检测 压实系数
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Drug-coated balloons for treating de novo lesions in large coronary vessels:A case report
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作者 Zhi-Qiang Zhang Yi-Ran Qin +4 位作者 man yin Xue-Heng Chen Lei Chen Wen-Yan Liang Xi-Qing Wei 《World Journal of Clinical Cases》 SCIE 2023年第20期4920-4925,共6页
BACKGROUND Percutaneous transluminal coronary angioplasty,while an effective intervention,can frequently lead to acute occlusion with severe consequences.Although clinical trials have demonstrated the efficacy of drug... BACKGROUND Percutaneous transluminal coronary angioplasty,while an effective intervention,can frequently lead to acute occlusion with severe consequences.Although clinical trials have demonstrated the efficacy of drug-coated balloons(DCB)in treating acute coronary artery occlusion and in preventing restenosis,there has been limited exploration on the use of DCB in treating de novo lesions in large vessels.Currently,DCB are only recommended for patients with small vessel lesions and in-stent restenosis lesions,those at high risk of bleeding,and other special groups of patients.CASE SUMMARY This report presents a case of successful drug-coated balloon treatment of de novo lesions in large coronary vessels.Postoperatively,the patient demonstrated favorable recovery,with subsequent examination results revealing no significant differences from the previous examination.CONCLUSION The successful treatment of the patient in our case highlights the potential of DCB in the treatment of de novo lesions in large coronary vessels. 展开更多
关键词 Drug-coated balloons De novo lesions Large coronary vessels Coronary artery disease Percutaneous coronary intervention Case report
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Engineered human spinal cord-like tissues with dorsal and ventral neuronal progenitors for spinal cord injury repair in rats and monkeys 被引量:2
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作者 Bai Xu Dingyang Liu +21 位作者 Weiyuan Liu Ge Long Wenbin Liu Yayu Wu Xinghui He Yeyu Shen Peipei Jiang man yin Yongheng Fan He Shen Liyang Shi Qi Zhang Weiwei Xue Chen Jin Zhenni Chen Bing Chen Jiayin Li Yali Hu Xing Li Zhifeng Xiao Yannan Zhao Jianwu Dai 《Bioactive Materials》 SCIE CSCD 2023年第9期125-137,共13页
Transplanting human neural progenitor cells is a promising method of replenishing the lost neurons after spinal cord injury (SCI), but differentiating neural progenitor cells into the diverse types of mature functiona... Transplanting human neural progenitor cells is a promising method of replenishing the lost neurons after spinal cord injury (SCI), but differentiating neural progenitor cells into the diverse types of mature functional spinal cord neurons in vivo is challenging. In this study, engineered human embryonic spinal cord-like tissues with dorsal and ventral neuronal characters (DV-SC) were generated by inducing human neural progenitor cells (hscNPCs) to differentiate into various types of dorsal and ventral neuronal cells on collagen scaffold in vitro. Transplantation of DV-SC into complete SCI models in rats and monkeys showed better therapeutic effects than undifferentiated hscNPCs, including pronounced cell survival and maturation. DV-SC formed a targeted connection with the host’s ascending and descending axons, partially restored interrupted neural circuits, and improved motor evoked potentials and the hindlimb function of animals with SCI. This suggests that the transplantation of pre-differentiated hscNPCs with spinal cord dorsal and ventral neuronal characteristics could be a promising strategy for SCI repair. 展开更多
关键词 Spinal cord injury Neuronal progenitors Tissue engineering
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Transplantation of neural stem progenitor cells from different sources for severe spinal cord injury repair in rat 被引量:1
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作者 Bai Xu man yin +19 位作者 Yaming Yang Yunlong Zou Wenbin Liu Lianyong Qiao Jixiang Zhang Zhan Wang Yayu Wu He Shen Minghan Sun Weiyuan Liu Weiwei Xue Yongheng Fan Qi Zhang Bing Chen Xianming Wu Ya Shi Falong Lu Yannan Zhao Zhifeng Xiao Jianwu Dai 《Bioactive Materials》 SCIE CSCD 2023年第5期300-313,共14页
Neural stem progenitor cell(NSPC)transplantation has been regarded as a promising therapeutic method for spinal cord injury(SCI)repair.However,different NSPCs may have different therapeutic effects,and it is therefore... Neural stem progenitor cell(NSPC)transplantation has been regarded as a promising therapeutic method for spinal cord injury(SCI)repair.However,different NSPCs may have different therapeutic effects,and it is therefore important to identify the optimal NSPC type.In our study,we compared the transcriptomes of human fetal brain-derived NSPCs(BNSPCs),spinal cord-derived NSPCs(SCNSPCs)and H9 embryonic stem-cell derived NSPCs(H9-NSPCs)in vitro and subsequently we transplanted each NSPC type on a collagen scaffold into a T8-9 complete SCI rat model in vivo.In vitro data showed that SCNSPCs had more highly expressed genes involved in nerve-related functions than the other two cell types.In vivo,compared with BNSPCs and H9-NSPCs,SCNSPCs exhibited the best therapeutic effects;in fact,SCNSPCs facilitated electrophysiological and hindlimb functional recovery.This study demonstrates that SCNSPCs may be an appropriate candidate cell type for SCI repair,which is of great clinical significance. 展开更多
关键词 Spinal cord injury Brain-derived NSPCs Spinal cord-derived NSPCs H9 embryonic stem cell-derived NSPCs Collagen scaffolds
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A weak allele of TGW5 enables greater seed propagation and efficient size-based seed sorting for hybrid rice production 被引量:1
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作者 Jiezheng ying Yaobing Qin +9 位作者 Fengyong Zhang Liu Duan Peng Cheng man yin Yifeng Wang Xiaohong Tong Jie Huang Zhiyong Li Xianjun Song Jian Zhang 《Plant Communications》 SCIE CSCD 2024年第4期137-140,共4页
Dear Editors,Heterosis utilization is an effective way to improve crop yield.Hybrid rice typically out-yield inbred rice varieties by 10%and show better stress resistance,and they have been widely adopted in Asian cou... Dear Editors,Heterosis utilization is an effective way to improve crop yield.Hybrid rice typically out-yield inbred rice varieties by 10%and show better stress resistance,and they have been widely adopted in Asian countries since the 1980s(Cheng et al.,2007).To produce rice F1 hybrid seeds(HSDs),male sterile lines(MSLs)are grown side by side with restorer lines(RLs)in order to receive the RL pollen.This seed production system faces challenges in maintaining the seed purity of the HSDs owing to the physical proximity of MSL and RL plants in the field.Traditionally,MSLs and RLs are planted in alternate rows to enable physical separation of seeds during harvesting. 展开更多
关键词 planted STERILE enable
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