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Correlation of gut microorganisms and non-volatile flavor substances provides new insights for breeding Scylla paramamosain

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Journal of Oceanology and Limnology 2024年第4期42卷 1336-1347页

作者： Gao GAO Xing LI Kangxiang QIN Yun HU Xiaosong JIANG Chenxi CHE Yuntao LI Changkao MU chunlin WANG Huan WANG School of Marine Science Ningbo UniversityNingbo 315211China Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315211China

The farming of Scylla paramamosain with specific flavors has a higher commercial value,and the flavors are related to the integrated farming environment and non-volatile flavor substances,while the survival environment is one of the important ways to source gut microorganisms in the *** this study,the levels of dominant taxa in the gut flora of *** from Mong Cai,Vietnam(VN),Taishan City,Guangdong Province(TS)of China,and Ninghai County,Ningbo City(NB)Zhejiang Province of China converged with those of *** from Sanmen County,Ningbo City(CK 1,CK 2,and CK 3)at 28 d of *** top 15 genera with the highest abundance of VN,TS,and NB gut flora were the same as CK 1,CK 2,and CK 3,but with different percentages,and gradually converged to CK 1,CK 2,and CK 3,respectively,at 28 d of *** between intestinal flora and non-volatile flavor substances in the hepatopancreas at the percentage level of relative abundance of bacterial genera found that above 28 d of domestication,Muribaculaceae,Psychrilyobacter,Clostridia_vadinBB 60_group,Halarcobacter Carboxylicivirga,Sediminispirochaeta may be the most important genera affecting flavor amino acids of ***,Carboxylicivirga,Halarcobacter,Photobacterium,ZOR 0006,Psychrilyobacter,and Pseudomonas may be the most important genera affecting flavor amino acids of ***,Carboxylicivirga,Halarcobacter,Photobacterium,ZOR 0006,Vibrio,and Sphingomonas may be the most important genera affecting flavor amino acids of *** results show that the intestinal flora structure of crabs from different areas were domesticated in the same area for at least 28 d before they converged to that of the domesticated crab,and the most important genera affecting the flavor amino acids of TS,VN,and NB were also *** results of this study provide a reference and basis for the technique of directional cultivation of the flavor quality of the crab.

关键词： survival environment Scylla paramamosain intestinal flora structure non-volatile flavor substance directional breeding

Privacy Enhanced Mobile User Authentication Method Using Motion Sensors

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Computer Modeling in Engineering & Sciences 2024年第3期138卷 3013-3032页

作者： chunlin Xiong Zhengqiu Weng Jia Liu Liang Gu Fayez Alqahtani Amr Gafar Pradip Kumar Sharma Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen518052China Sangfor Technologies Inc. Shenzhen518055China School of Data Science and Artificial Intelligence Wenzhou University of TechnologyWenzhou325035China College of Computer Science&Technology Zhejiang University of TechnologyHangzhou310023China Software Engineering Department College of Computer and Information SciencesKing Saud UniversityRiyadh12372Saudi Arabia Math&Computer Science Department Faculty of ScienceMenofia UniversityShebin El-KomEgypt Computing Science Department University of AberdeenAberdeenUK

With the development of hardware devices and the upgrading of smartphones,a large number of users save privacy-related information in mobile devices,mainly smartphones,which puts forward higher demands on the protection of mobile users’privacy *** present,mobile user authenticationmethods based on humancomputer interaction have been extensively studied due to their advantages of high precision and non-perception,but there are still shortcomings such as low data collection efficiency,untrustworthy participating nodes,and lack of *** this end,this paper proposes a privacy-enhanced mobile user authentication method with motion sensors,which mainly includes:(1)Construct a smart contract-based private chain and federated learning to improve the data collection efficiency of mobile user authentication,reduce the probability of the model being bypassed by attackers,and reduce the overhead of data centralized processing and the risk of privacy leakage;(2)Use certificateless encryption to realize the authentication of the device to ensure the credibility of the client nodes participating in the calculation;(3)Combine Variational Mode Decomposition(VMD)and Long Short-TermMemory(LSTM)to analyze and model the motion sensor data of mobile devices to improve the accuracy of model *** experimental results on the real environment dataset of 1513 people show that themethod proposed in this paper can effectively resist poisoning attacks while ensuring the accuracy and efficiency of mobile user authentication.

关键词： Mobile authentication blockchain federated learning smart contract certificateless encryption VMD LSTM

ANALYSIS OF INTERNAL PARALLEL MOVE GEAR TRANSMISSION FROM KINETICS

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ANALYSIS OF INTERNAL PARALLEL MOVE GEAR TRANSMISSION FROM KI...

新型分动式六臂井径测井仪推靠系统运动学及动力学分析

2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： HAN Gang *, zhang chunlin* *Beijing Institute of Science and Technology , Beijing, China Taiyuan Institute of Science and Technology , Shanxi, China

Parallel move gear transmission is developed as a new formof transmission based on the principle of parallel crankmechanicism and the theory of planet gear *** the kinetic analysis of

关键词： Internal parallel move gears interference kinetics.

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机械传动 2019年第6期43卷 117-124页

作者：任涛张飞张春琳孙文西安石油大学机械工程学院陕西西安710065 成都北方石油勘探开发技术有限公司四川成都610051

推靠系统是井径测井仪实现井筒直径大小测量的主要组成部分,其运动、动力特性与测井数据的准确性紧密相关。为了进一步提高推靠系统的传动性能,结合封闭矢量多边形投影法和矩阵法,对推靠系统打开、测量两种运动状态进行了运动特性分析... 详细信息

推靠系统是井径测井仪实现井筒直径大小测量的主要组成部分,其运动、动力特性与测井数据的准确性紧密相关。为了进一步提高推靠系统的传动性能,结合封闭矢量多边形投影法和矩阵法,对推靠系统打开、测量两种运动状态进行了运动特性分析。在对六臂井径测井仪推靠系统运动学分析的基础上,运用动态静力学方法,对推靠系统两种运动进行了动力特性分析。基于Adams软件进行实例仿真,得出了推靠系统各构件的位移、速度和加速度随时间变化的规律曲线,以及各构件的受力情况,辅助分析和验证了其系统的运动规律,为进行六臂井径测井仪推靠系统的优化设计提供了理论依据。

关键词：井径测井仪推靠系统矩阵法动态静力学方法仿真

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直接修正大气实现小目标高精度辐射测量

红外与激光工程 2018年第S1期47卷 44-49页

作者：蔡立华李周余毅张春林黄智国中国科学院长春光学精密机械与物理研究所吉林长春130033 中国科学院大学北京100049

实现大气的传输修正是地基红外辐射测量系统获取目标真实辐射亮度的重要步骤之一，传统获取大气透过率和大气程辐射的方法是通过大气传输修正软件计算得到的。提出利用标准参考源实现大气修正，并将该方法实现对小目标的高精度辐射特性... 详细信息

实现大气的传输修正是地基红外辐射测量系统获取目标真实辐射亮度的重要步骤之一，传统获取大气透过率和大气程辐射的方法是通过大气传输修正软件计算得到的。提出利用标准参考源实现大气修正，并将该方法实现对小目标的高精度辐射特性测量余反演。文中对宽动态范围的辐射定标模型和方法进行理论推导，实验采用600mm口径的辐射测量系统进行辐射测量验证。实验数据分析表明采用本文提出方法对小目标的辐射反演误差在0．97％～1．03％，而相比传统采用大气传输软件计算的辐射反演误差在7．3％～7．36％，因此所提出的方法具有更高的辐射测量与反演精度。

关键词：红外辐射大气程辐射校正大气修正

Microbial-driven ectopic uranium extraction with net electrical energy production

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 49-58页

作者： Xin Tang Yin Ye chunlin Wang Bingqian Wang Zemin Qin Cui Li Yanlong Chen Yuheng Wang Zhiling Li Miao Lv Aijie Wang Fan Chen School of Ecology and Environment Northwestern Polytechnical UniversityXi’an 710129China School of Materials Science and Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu 611756China

The extraction of uranium (U) from U-bearing wastewater is of paramount importance for mitigating negative environmental impacts and recovering U resources. Microbial reduction of soluble hexavalent uranium (U(VI)) to insoluble tetravalent uranium (U(IV)) holds immense potential for this purpose, but its practical application has been impeded by the challenges associated with managing U-bacterial mixtures and the biotoxicity of U. To address these challenges, we present a novel spontaneous microbial electrochemical (SMEC) method that spatially decoupled the microbial oxidation reaction and the U(VI) reduction reaction. Our results demonstrated stable and efficient U extraction with net electrical energy production, which was achieved with both synthetic and real wastewater. U(VI) removal occurred via diffusion-controlled U(VI)-to-U(IV) reduction-precipitation at the cathode, and the UIVO_(2) deposited on the surface of the cathode contributed to the stability and durability of the abiotic U(VI) reduction. Metagenomic sequencing revealed the formation of efficient electroactive communities on the anodic biofilm and enrichment of the key functional genes and metabolic pathways involved in electron transfer, energy metabolism, the TCA cycle, and acetate metabolism, which indicated the ectopic reduction of U(VI) at the cathode. Our study represents a significant advancement in the cost-effective recovery of U from U(VI)-bearing wastewater and may open a new avenue for sustainable uranium extraction.

关键词： U(VI)bioreduction Electricity production Reaction decoupling Uranium-bearing wastewater Biofilm microbiome

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骨肉瘤安全外科边界与保肢适应证

中国肿瘤临床 2010年第17期37卷 998-1001页

作者：董扬马小军张春林鲍琨上海交通大学第六人民医院骨科上海市200233 上海市第十人民医院骨科

目的:通过X线、MRI和骨扫描(ECT)、肉眼边界与病理边界的对比研究来确定骨肉瘤保肢的安全外科边界,并探讨影响骨肉瘤保肢的因素。方法:选择2007年5月～2008年7月间在上海交通大学第六人民医院骨科新就诊的骨肉瘤患者,术前X线、ECT、MRI... 详细信息

目的:通过X线、MRI和骨扫描(ECT)、肉眼边界与病理边界的对比研究来确定骨肉瘤保肢的安全外科边界,并探讨影响骨肉瘤保肢的因素。方法:选择2007年5月～2008年7月间在上海交通大学第六人民医院骨科新就诊的骨肉瘤患者,术前X线、ECT、MRI检查,根据影像学表现确定手术范围,取术后截除的肿瘤瘤段,用电锯或骨刀沿肿瘤骨的冠状面、矢状面劈开,将标本平分为两等份,取一半为选材对象。肿瘤标本分割之前,需进行肿瘤长度的肉眼测量。对所有取材做经过解剖标志点的冠状面切面。将剖成厚度约10mm断面,行整层分开切成1cm×1cm切片送病理检查。对于每例标本采集的X线、MRI检查及ECT进行数码照相,并传输到计算机中。参照每例患者的影像学资料的标尺,应用Adobe photoshop 7.0软件的切片功能进行影像学、实体肿瘤长度的测量,应用统计软件SPSS 11.5进行统计,采用单一因素的两组配对资料的t检验,P<0.05为有统计学意义。结果:满足入选条件共19例。X线片显示软组织边界不清。MRI可以很好的显示软组织的边界。镜下肿瘤边缘可见水肿带,并有出血充血,多数肿瘤沿脂肪细胞间隙浸润生长。X线、ECT与病理检查之间有显著性差异,MRI、肉眼观察与病理范围无显著性差异。结论:MRI测量相对误差较小,术前MRI加权及脂肪抑制像在肿瘤边界外1.5cm做为保肢截骨平面是安全平面。影响骨肉瘤保肢的因素是多方面的,需要综合考虑。

关键词：骨肉瘤外科边界保肢适应证

鄂尔多斯盆地盒8段致密砂岩气储层微观特征及形成机理

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中国石油勘探 2019年第4期24卷 476-484页

作者：张春林李剑刘锐娥中国石油勘探开发研究院中国石油天然气集团有限公司天然气成藏与开发重点实验室

鄂尔多斯盆地盒8段致密砂岩气是国内典型的致密气勘探领域,为了明确盒8段致密砂岩气储层微观特征及其形成机理,开展了相关研究。在钻井岩心观察的基础上,进行了铸体薄片、场发射扫描电镜、CT扫描及恒速压汞等多种实验,研究认为盒8段致... 详细信息

鄂尔多斯盆地盒8段致密砂岩气是国内典型的致密气勘探领域,为了明确盒8段致密砂岩气储层微观特征及其形成机理,开展了相关研究。在钻井岩心观察的基础上,进行了铸体薄片、场发射扫描电镜、CT扫描及恒速压汞等多种实验,研究认为盒8段致密砂岩类型以石英砂岩、岩屑石英砂岩为主,总体特征表现为中—粗粒、分选中等,颗粒以棱角状、次棱角状为主,颗粒间以点、线接触为主,填隙物种类多样。储层储集空间类型主要包括残余粒间孔隙、溶蚀孔隙、微纳米孔隙及裂缝等,微纳米孔隙占储层孔隙90%以上;喉道类型包括缩颈型、弯曲片状及管束状等,孔喉特征总体表现为喉道细、连通性好—中等,平均喉道半径与渗透率的相关性最好。沉积作用和沉积组构控制了储层原始物性差异,辫状河心滩砂体和三角洲分流河道砂体物性比冲积扇扇中水道砂体物性好,后期经历的强压实作用是储层致密的主控因素,胶结作用加剧了对储层孔隙结构的破坏,而普遍、强烈的溶蚀作用在一定程度上改善了致密储层的储集性能。

关键词：鄂尔多斯盆地盒8段致密砂岩气微观特征形成机理

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长链非编码RNA对肿瘤耐药作用的研究进展

肿瘤研究与临床 2015年第1期27卷 69-72页

作者：朱昆鹏张春林上海交通大学附属第六人民医院骨科 200233 同济大学附属上海第十人民医院骨科

长链非编码RNA（lncRNA）是一类长度大于200个核苷酸，但并不具备编码蛋白质功能的基因转录产物。lncRNA在细胞增殖、分化、衰老、死亡及肿瘤的发生发展中发挥重要作用。文章就lncRNA的主要特点及其对肿瘤耐药作用的研究进展作一综述。

关键词：长链非编码RNA 肿瘤耐药