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Design Curves for Mooring Lines of Turret Mooring Systems

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China Ocean Engineering 1997年第4期12卷 387-392页

作者： Gao, J Tan, JH chen, xh Shanghai Jiao Tong Univ Shanghai 200030 Peoples R China

This paper presents a series of design curves to aid in the selection of turret mooring systems for tankers based Floating Production Storage and Offloading (FPSO) systems. These curves are appropriate to water depths ranging from 100 m to 600 m. The curves can be used as a preliminary design tool, allowing the designer to quickly evaluate alternative mooring system configurations, including the number of mooring lines, the characteristics of chain and wire rope to be deployed and the. initial tension. With a knowledge of the total environmental force and vessel motion characteristics, the designer can determine the appropriate system for closer evaluation.

关键词： turret mooring system mooring line design curve preliminary design

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渭河河漫滩沉积物渗透性研究

水文地质工程地质 2014年第4期41卷 19-23页

作者：米海存 chen xh 何红曼刘睿翀高敏长安大学环境科学与工程学院陕西西安710064 School of Natural Resources University of Nebraska-LincolnLincolnNE 68583-0996

利用竖管法现场测量渭河高漫滩沉积物的水平渗透系数和河漫滩饱和带沉积物的垂向渗透系数,分别测定了高漫滩5个层位和河漫滩饱和带78个点的渗透系数,分析了渗透系数在层内的变化以及在各层之间的差别。应用Matlab软件检验实验数据的统... 详细信息

利用竖管法现场测量渭河高漫滩沉积物的水平渗透系数和河漫滩饱和带沉积物的垂向渗透系数,分别测定了高漫滩5个层位和河漫滩饱和带78个点的渗透系数,分析了渗透系数在层内的变化以及在各层之间的差别。应用Matlab软件检验实验数据的统计分布规律并应用地质统计原理计算渗透系数的变异函数。分析得出高漫滩中单一沉积层中测得的渗透系数属于正态分布,河漫滩饱和带单一沉积层的渗透系数呈对数正态分布。根据实验,分析得出渗透系数与洪水水动力条件相关。洪水水动力条件大的情况下,沉积物以中砂、粗砂为主,沉积物有较大的渗透系数;当洪水水动力条件较小时,沉积物以细砂、粉砂沉积为主,其渗透系数也较小。

关键词：竖管法水平渗透系数渭河漫滩变异函数水动力条件饱和带

Carrimycin ameliorates lipopolysaccharide and cecal ligation and puncture-induced sepsis in mice

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Chinese Journal of Natural Medicines 2024年第3期22卷 235-248页

作者： LAI Junzhong LIANG Jiadi chen Kunsen GUAN Biyun chen Zhirong chen Linqin FAN Jiqiang ZHANG Yong LI Qiumei SU Jingqian chen Qi LIN Jizhen The Cancer Center Fujian Medical University Union HospitalFuzhou 350001China Fujian Key Laboratory of Innate Immune Biology Biomedical Research Center of South ChinaFujian Normal UniversityFuzhou 350117China The Department of Otolaryngology Head&Neck SurgeryUniversity of Minnesota Medical SchoolMinneapolisMN 55455USA

Carrimycin(CA),sanctioned by China’s National Medical Products Administration(NMPA)in 2019 for treating acute bronchitis and sinusitis,has recently been observed to exhibit multifaceted biological activities,encompassing anti-inflammatory,antiviral,and anti-tumor *** these applications,its efficacy in sepsis treatment remains *** study introduces a novel function of CA,demonstrating its capacity to mitigate sepsis induced by lipopolysaccharide(LPS)and cecal ligation and puncture(CLP)in mice *** research employed in vitro assays,real-time quantitative polymerase chain reaction(RT-qPCR),and RNA-seq analysis to establish that CA significantly reduces the levels of pro-inflammatory cytokines,namely tumor necrosis factor-alpha(TNF-α),interleukin 1 beta(IL-1β),and interleukin 6(IL-6),in response to LPS ***,Western blotting and immunofluorescence assays revealed that CA impedes Nuclear Factor Kappa B(NF-κB)activation in LPS-stimulated RAW264.7 *** these findings,in vivo experiments demonstrated that CA effectively alleviates LPS-and CLP-triggered organ inflammation in C57BL/6 *** insights were gained through 16S sequencing,highlighting CA’s pivotal role in enhancing gut microbiota diversity and modulating metabolic pathways,particularly by augmenting the production of short-chain fatty acids in mice subjected to ***,a comparative analysis revealed that CA’s anti-inflammatory efficacy surpasses that of equivalent doses of aspirin(ASP)and ***,these findings suggest that CA exhibits significant therapeutic potential in sepsis *** discovery provides a foundational theoretical basis for the clinical application of CA in sepsis management.

关键词： Carrimycin Inflammation Lipopolysaccharide Cecal ligation and puncture Sepsis Gut microbiota

Short-time maritime target detection based on polarization scattering characteristics

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Journal of Systems Engineering and Electronics 2024年第1期35卷 55-64页

作者： chen Shichao LUO Feng TIAN Min LYU Wanghan College of Computer and Information Engineering(College of Artificial Intelligence) Nanjing Tech UniversityNanjing 211816China Hangzhou Institute of Technology Xidian UniversityHangzhou 311200China

In this paper,a detection method combining Cameron decomposition based on polarization scattering characteristics in sea clutter background is ***,the Cameron decomposition is exploited to fuse the radar echoes of full polarization channels at the data *** to the artificial material structure on the surface of the target,it can be shown that the non-reciprocity of the target cell is stronger than that of the clutter ***,based on the analysis of the decomposition results,a new feature with scattering geometry characteristics in polarization domain,denoted as Cameron polarization decomposition scattering weight(CPD-SW),is extracted as the test statistic,which can achieve more detailed descriptions of the clutter scattering characteristics utilizing the difference between their scattering ***,the superiority of the proposed CPD-SW detector over traditional detectors in improving detection performance is verified by the IPIX measured dataset,which has strong stability under short-time observation in threshold detection and can also improve the separability of feature space zin anomaly detection.

关键词： sea clutter small target radar detection Cameron decomposition characteristics analysis

THE TRUNCATED EM METHOD FOR JUMP-DIFFUSION SDDES WITH SUPER-LINEARLY GROWING DIFFUSION AND JUMP COEFFICIENTS

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Journal of Computational Mathematics 2024年第1期42卷 178-216页

作者： Shounian Deng chen Fei Weiyin Fei Xuerong Mao Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment Ministry of Educationand School of Mathematics-Physics and FinanceAnhui Polytechnic UniversityWuhu 241000China Business School University of Shanghai for Science and TechnologyShanghai 200093China Department of Mathematics and Statistics University of StrathclydeGlasgow G11XHUK

This work is concerned with the convergence and stability of the truncated EulerMaruyama(EM)method for super-linear stochastic differential delay equations(SDDEs)with time-variable delay and Poisson *** constructing appropriate truncated functions to control the super-linear growth of the original coefficients,we present two types of the truncated EM method for such jump-diffusion SDDEs with time-variable delay,which is proposed to be approximated by the value taken at the nearest grid points on the left of the delayed *** first type is proved to have a strong convergence order which is arbitrarily close to 1/2 in mean-square sense,under the Khasminskii-type,global monotonicity with U function and polynomial growth *** second type is convergent in q-th(q<2)moment under the local Lipschitz plus generalized Khasminskii-type *** addition,we show that the partially truncated EM method preserves the mean-square and H∞stabilities of the true ***,we carry out some numerical experiments to support the theoretical results.

关键词： SDDEs Truncated EM method Time-variable delay Poisson jumps

大学生自尊特点与性别、年级及心理因素的关系

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中国组织工程研究与临床康复 2007年第39期11卷 7884-7886,7890页

作者：陈学洪肖美萍陈建文赣南医学院解剖学教研室江西省赣州市341000 赣州市人民医院普外科江西省赣州市341000 华中科技大学教育科学研究院湖北省武汉市430074

目的:观察大学生自尊水平的特点。方法:于2005-11/2006-05选取江西省内6所高等院校,专业包括理工科、医学、师范类及文科类大学生793名。以751名大学生为研究对象,采用二维自尊量表进行调查,包含16个题项,每个维度8个题项。量表的重测... 详细信息

目的:观察大学生自尊水平的特点。方法:于2005-11/2006-05选取江西省内6所高等院校,专业包括理工科、医学、师范类及文科类大学生793名。以751名大学生为研究对象,采用二维自尊量表进行调查,包含16个题项,每个维度8个题项。量表的重测信度为0.84和0.80,同质性信度为0.86和0.84;该量表测量整体自尊,分为自我喜欢和自我能力感两个维度。采用个别访谈的方法对自尊高分同学和自尊低分同学进行个别访谈,同时收集同学和班主任(辅导员)对该同学的评价。调查中使用半结构化访谈,访谈提纲的内容是依据症状自评量表各因子结合以往研究中自尊及其相关影响因素设计的,主要包括以下3个方面:①与焦虑有关的认知和事件。②与同学、老师以及朋友的关系。③对自我情感和心境的评价。为了缓解被访谈者的紧张情绪,还进行其他方面的交流。结果:发放问卷793份,收回780份。对所收回的问卷进行初步整理,剔除不符合要求的废卷后,获得有效问卷751份。①男生在整体自尊和自我能力感维度上得分高于女生,差异有显著性意义[分别为(49.5820±7.9979),(48.2091±8.2642)分;(23.3893±3.9680),(22.6963±4.2606)分,t=2.157,2.134,P0.05)。②在整体自尊和自尊两个维度上,各年级之间差异有显著性意义(P<0.05)。大二学生自我喜欢维度得分明显高于大一和大三学生[分别为(26.7353±5.1527),(25.2432±4.7695),(25.6045±5.2917)分,t=3.485,2.11,P<0.05,0.01];大二学生在自我能力感维度得分明显高于大一和大三学生[分别为(23.5588±4.2219),(22.5459±4.2285),(22.9718±3.9448)分,t=2.748,1.395,P<0.05,0.01]。③整体自尊和自尊两个维度,在性别与年级之间有交互效应。整体自尊和自我喜欢得分男生高于女生,大二学生得分高于大一和大三学生。自我能力感得分大二女生高于男生。在整体自尊和自尊两个维度,年级和专业之间有交互效应。④自尊与心理健康的关系:整体自尊高分者普遍具有正确的人生态度,满意的心境,对生活乐观,对未来充满了希望,和谐的人际关系、良好的个性和高尚的人格,同学之间关系融洽,能很好地相处,在与人交往中能做到尊重人、理解人,从不将自己的观点强加到他人的身上,能够平等地、宽容地了解、评价对方。而整体自尊低分者普遍存在焦虑情绪,人际关系不和谐和不能恰当地认同自己,或是莫名其妙地自傲,或是无缘无故地自卑,经常有意无意地掩饰自己的不足,心理特别敏感、脆弱,失落感极强,经不起风浪的折腾,存在严重的心理冲突,回避矛盾,无法保持平衡的心理状态。结论:大学生自尊水平存在性别、年级差异,并与心理健康症状存在明显相互作用关系。

关键词：大学生自尊心理健康

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泪腺上皮细胞凋亡与丙酸睾酮的抑制效应

中国组织工程研究与临床康复 2007年第36期11卷 7203-7206页

作者：谯雁彬赵敏陈向晖谢敏重庆医科大学附属第一医院眼科重庆市400016

目的:分析丙酸睾酮抑制泪腺上皮细胞凋亡的机制,为干眼症的性激素防治提供科学的理论依据。方法:实验于2003-09/2004-01在重庆医科大学附属第一医院中心实验室完成。①实验材料:二三月龄新西兰健康白色家兔30只,无眼疾,雌性,体质量1.5～... 详细信息

目的:分析丙酸睾酮抑制泪腺上皮细胞凋亡的机制,为干眼症的性激素防治提供科学的理论依据。方法:实验于2003-09/2004-01在重庆医科大学附属第一医院中心实验室完成。①实验材料:二三月龄新西兰健康白色家兔30只,无眼疾,雌性,体质量1.5～2.5kg。丙酸睾酮(产品批号:020902,上海通用药业股份有限公司产品),用DMSO配成储存液,-70℃保存。分析纯过氧化氢购自北方同正生物技术发展有限公司。②实验方法:经耳缘静脉注射空气处死家兔,按常规无菌操作行泪腺摘除术,酶消化法分离兔泪腺上皮细胞。取二三代培养的泪腺上皮细胞,按约1×108L-1密度接种于预置小玻片的24孔板内,培养4d后,加入浓度为1×10-8,1×10-7,1×10-6,1×10-5mol/L丙酸睾酮,继续培养24h,另以未加丙酸睾酮的培养液培养的同期传代的泪腺上皮细胞作空白对照。培养24h后,再分别加入终浓度为100μmol/LH2O2于不同浓度丙酸睾酮组继续培养60min,另以未加丙酸睾酮的DMEM/F12培养液培养的同期传代的泪腺上皮细胞作对照。③实验评估:应用TUNEL法检测泪腺上皮细胞凋亡,采用免疫细胞化学法检测泪腺上皮细胞Bax和Bcl-2表达。结果:①丙酸睾酮对过氧化氢诱导的泪腺上皮细胞凋亡的影响:与单纯加入100μmol/LH2O2组比较,加入不同浓度丙酸睾酮组泪腺上皮细胞凋亡率均明显下降且丙酸睾酮的抗凋亡作用呈现一定范围内的剂量依赖性[(15.15±1.05)%,(13.94±0.73)%,(12.51±0.91)%,(10.63±0.78)%,(8.19±0.85)%,P<0.01]。②免疫细胞化学法检测Bcl-2和Bax蛋白表达:与单纯加100μmol/LH2O2组相比较,同时加入1×10-8,1×10-7,1×10-6,1×10-5mol/L丙酸睾酮各组均可使泪腺上皮细胞Bcl-2的表达明显增强和Bax的表达明显减弱,且与丙酸睾酮的剂量呈正相关(Bcl-2:0.92±0.10,1.01±0.08,1.12±0.06,1.24±0.12,1.37±0.11;Bax:2.28±0.09,2.17±0.11,2.06±0.07,1.91±0.13,1.77±0.10,P<0.01)。结论:丙酸睾酮抑制泪腺上皮细胞凋亡的机制可能与凋亡调节相关基因Bcl-2表达上调和Bax表达下调有关。

关键词：泪腺细胞凋亡 Bcl-2 Bax 丙酸睾酮

脑性瘫痪儿童多部位外周神经和肌腱手术后64例随访分析

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中国组织工程研究与临床康复 2007年第30期11卷 5911-5913页

作者：李初阳陈旭红童华敏广州康复实验学校博爱医院儿童康复科广东省广州市510630

目的:观察脑性瘫痪儿童多部位外周神经和肌腱手术的效果,了解术后康复训练情况,分析影响手术效果的因素。方法:2003-07/2004-11在博爱医院外科施行多部位外周神经和肌腱手术的痉挛型脑瘫儿童141例,均符合痉挛型脑瘫诊断标准。自行设计... 详细信息

目的:观察脑性瘫痪儿童多部位外周神经和肌腱手术的效果,了解术后康复训练情况,分析影响手术效果的因素。方法:2003-07/2004-11在博爱医院外科施行多部位外周神经和肌腱手术的痉挛型脑瘫儿童141例,均符合痉挛型脑瘫诊断标准。自行设计家长调查问卷,了解儿童术前与术后在大运动、手功能、语言与认知、生活自理方面功能改善情况,康复训练情况,及家长对手术效果的满意度。结果:2005-06/08随访到64例患者。①扶物站、靠站和长坐能力改善最明显;翻身、独坐、独站能力多数有改善;牵手走和独行能力半数改善;少数跑步能力改善;牵手走、独行、跑步能力倒退的各2例。②双上肢活动能力、抓握、写字多数改善,支撑能力少数改善。③语言表达和发音清晰度多数改善,认知、理解能力、行为异常少数改善。④进食、进饮能力多数改善,排尿便、穿衣、洗漱能力少数改善。⑤大部分在康复机构训练3个月以上。⑥家长满意52例(83%);不满意11例(17%)。结论:多部位外周神经和肌腱手术切口小,手术时间短,可同时改善多部位痉挛和挛缩、矫正异常姿势,对肢体功能改善较明显。手术成功的关键是严格把握适应证,以及术前术后的康复训练。婴幼儿应通过训练改善功能,不强调早期手术。术前有必要组织神经康复科、儿科、治疗师与外科共同会诊。

关键词：脑性瘫痪儿童随访研究

Orthotopic liver transplantation without veno-venous bypass in a patient with mitral valve prolapse

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Orthotopic liver transplantation without veno-venous bypass ...