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Mechanisms of cadmium phytoremediation and detoxification in plants

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The Crop Journal 2021年第3期9卷 521-529页

作者： jin-Song luo Zhenhua Zhang College of Resources and Environmental Sciences Hunan Agricultural UniversityChangsha 410128HunanChina Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use Hunan Provincial Key Laboratory of Nutrition in Common UniversityNational Engineering Laboratory on Soil and Fertilizer Resources Efficient UtilizationChangsha 410128HunanChina

As a consequence of industrial development,soil Cd pollution leads to crop contamination by Cd,posing a threat to food safety and human *** accumulation of Cd in plants also inhibits their growth via oxidative stress damage to their photosynthetic *** evolutionary selection,plants have developed a set of efficient strategies to respond to Cd in their *** include the accumulation and detoxification of heavy *** is absorbed by plant roots through the apoplastic and symplastic pathways and then translocated to plant shoots via xylem loading,long-distance transport,and phloem ***,plants initiate a series of mechanisms to reduce Cd toxicity,including cell wall adsorption,cytoplasmic chelation,and vacuolar *** review summarizes current knowledge of Cd accumulation and detoxification in plants.

关键词： Uptake Translocation Vacuolar sequestration Chelation

Bio-inspired Design and Inverse Kinematics Solution of an Omnidirectional Humanoid Robotic Arm with Geometric and Load Capacity Constraints

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Journal of Bionic Engineering 2024年第2期21卷 778-802页

作者： Zhichao Zhu Zirong luo Yiming Zhu Tao Jiang Minghai Xia Shanjun Chen Boyu jin College of Intelligence Science and Technology National University of Defense TechnologyChangshaChina

Inspired by the driving muscles of the human arm,a 4-Degree of Freedom(DOF)concentrated driving humanoid robotic arm is proposed based on a spatial double parallel four-bar *** four-bar mechanism design reduces the inertia of the elbow-driving unit and the torque by 76.65%and 57.81%,*** the human pose regulation strategy that the human arm picks up a heavy object by adjusting its posture naturally without complicated control,the robotic arm features an integrated position-level closed-form inverse solution method considering both geometric and load capacity *** method consists of a geometric constraint model incorporating the arm angle(φ)and the Global Configuration(GC)to avoid joint limits and singularities,and a load capacity model to constrain the feasible domain of the arm ***,trajectory tracking simulations and experiments are conducted to validate the feasibility of the proposed inverse solution *** simulated maximum output torque,maximum output power and total energy consumption of the robotic arm are reduced by up to 2.0%,13.3%,and 33.3%,*** experimental results demonstrate that the robotic arm can bear heavy loads in a human-like posture,effectively reducing the maximum output torque and energy consumption of the robotic arm by 1.83%and 5.03%,respectively,while avoiding joints beyond geometric and load capacity *** proposed design provides a high payload–weight ratio and an efficient pose control solution for robotic arms,which can potentially broaden the application spectrum of humanoid robots.

关键词： Humanoid robotic arm Bio-inspired design Inverse kinematics solution Load capacity constraint Geometric constraint

动态浊度法定量检测猫粮中细菌内毒素含量的研究

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饲料研究 2024年第3期47卷 122-126页

作者：林钦恒伍玲燕黄璇莹罗锦霞黄启红彭静雅方丽广东省科学院测试分析研究所(中国广州分析测试中心)、广东省化学测量与应急检测技术重点实验室、广东省保健食品功效成分检测与风险物质快速筛查工程技术研究中心广东广州510070

试验旨在建立一种动态浊度法定量测定猫粮中细菌内毒素含量的检测方法。猫粮样品中的细菌内毒素用水提取,离心,过滤,滤液适当稀释,采用动态浊度法在细菌内毒素测定仪上进行定量测定。结果显示:在0.040~5.000 EU/mL的范围内细菌内毒素的... 详细信息

试验旨在建立一种动态浊度法定量测定猫粮中细菌内毒素含量的检测方法。猫粮样品中的细菌内毒素用水提取,离心,过滤,滤液适当稀释,采用动态浊度法在细菌内毒素测定仪上进行定量测定。结果显示:在0.040~5.000 EU/mL的范围内细菌内毒素的线性良好(相关系数r=-0.9953,|r|>0.980),标准曲线有效,重复测定的相对标准偏差(RSD)为8.9%~14.0%(n=6),当稀释因子≥1000时干扰试验的回收率均在50%~200%之间,方法定量限(LOQ)为0.04 EU/mg。研究表明,该方法操作简便,可靠准确,重现性好,能够有效检测猫粮样品中细菌内毒素含量,具有较好的应用前景。

关键词：猫粮细菌内毒素动态浊度法鲎试剂

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Structural Control of the Getang Carlin-Type Gold Deposit in Southwest China

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Journal of Earth Science 2024年第2期35卷 536-552页

作者： Guoping Zeng Xinlu Hu Diwei luo Jianzhong Liu Shuzhen Yao Yongjie jin Wuhan Center China Geological SurveyWuhan430205China Central South China Innovation Center for Geosciences Wuhan430205China Faculty of Earth Resources China University of GeosciencesWuhan430074China Geological Party 105 Guizhou Bureau of Geology and Mineral Exploration&DevelopmentGuiyang550018China

The Getang is a representative Carlin-type gold deposit in Southwest *** has a proven reserve of about 30 tonnes at an average grade of 5.1 g/t *** orebodies occur as strat-abound lenses,and are structurally controlled by shallow NWW-and NE-trending fold-fault systems and the unconformity between the Upper and Middle *** this study,the regional-and deposit-scale structural investigations,joints and finite strain measurements,and stress and dynamic analysis were conducted with an aim to reveal the structural process of the Getang gold deposit and clarify the relationship between the gold mineralization and *** phases of deformation were identified in the deposit:(1)paleokarst was generated by a crustal uplift when the Youjiang Basin experienced extension at the end of the Middle Permian,laying the foundation for the unconformity;(2)the NW-trending structures were formed under a NNE-SSW compression during the Indochina-South China collision(Indosinian orogeny)in Triassic;(3)the NE-trending structures were generated or reactivated under a NW-SE-oriented compression during the Yanshanian intracontinental *** unconformity recorded two episodes of tectonic evolution in the NNE-SSW and NW-SE *** analyses and geochronology data suggest that the Getang gold deposit was formed as a result of tectonic transition from compression to extension during the Yanshanian intracontinental orogeny.

关键词： Carlin-type gold deposit structural features finite strain Getang Southwest China economy geology geochemistry

Remote sensing-based deformation monitoring of pagodas at the Bagan cultural heritage site,Myanmar

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International Journal of Digital Earth 2022年第1期15卷 770-788页

作者： Fulong Chen Wei Zhou Yunwei Tang Ru Li Hui Lin Timo Balz jin luo Pilong Shi Meng Zhu Chaoyang Fang Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of Education & School of Geography and EnvironmentJiangxi Normal UniversityNanchangPeople’s Republic of China Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China International Centre on Space Technologies for Natural and Cultural Heritage under the Auspices of UNESCO BeijingPeople’s Republic of China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhanPeople’s Republic of China

As a World Cultural Heritage site with sacred landscape featuring an exceptional range of Buddhist art and architecture,much attention has been focused on the sustainable development of Bagan(Myanmar).Particularly,the monitoring of landscape surface subsidence and monument instability is of great importance to the protection and development planning of the Bagan heritage *** this study,we applied high resolution TerraSAR-X imagery acquired from 2019 to 2020 for deformation monitoring based on the small baseline subset(SBAS)and persistent scatterer synthetic aperture radar interferometry(PSInSAR)*** identified several hotspots and pagodas with displacement anomalies linked to land cover change and previous *** cross comparison between SBAS and PSInSAR and the precision of height estimates derived by PSInSAR indicated a millimetric precision of the derived deformation *** combination of the two multi-temporal SAR interferometry approaches satisfies the two-scale monitoring requirements from landscapes to monuments,particularly for large-scale World Heritage *** non-contact monitoring method has potential when traditional methods using field accessibility and surveillance are constrained.

关键词： InSAR cultural heritage Bagan deformation monitoring UNESCO pagoda

Study of liver cirrhosis over twenty consecutive years in adults in Southern China

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World Journal of Hepatology 2023年第12期15卷 1294-1306页

作者： Xing Wang jin-Ni luo Xiao-Ying Wu Qi-Xian Zhang Bin Wu Department of Gastroenterology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630Guangdong ProvinceChina Guangdong Provincial Key Laboratory of Liver Disease Research The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630Guangdong ProvinceChina Patient Case Management Division The Third Affiliated Hospital of Sun Yatsen UniversityGuangzhou 510630Guangdong ProvinceChina

BACKGROUND Liver cirrhosis(LC)is a prevalent and severe disease in *** burden of LC is changing with widespread vaccination of hepatitis B virus(HBV)and antiviral ***,the recent transition in etiologies and clinical features of LC cases requiring hospitalization is *** To identify the transition in etiologies and clinical characteristics of hospitalized LC patients in Southern *** In this retrospective,cross-sectional study we included LC inpatients admitted between January 2001 and December *** data indicating etiological diagnosis and LC complications,and demographic,laboratory,and imaging data were collected from our hospital-based *** etiologies of LC were mainly determined according to the discharge diagnosis,and upper gastrointestinal bleeding,ascites,hepatic encephalopathy,spontaneous bacterial peritonitis,hepatocellular carcinoma(HCC),portal vein thrombosis,hepatorenal syndrome,and acute-on-chronic liver failure(ACLF)were considered LC-related complications in our *** trends in the etiologies and clinical characteristics were investigated using logistic regression,and temporal trends in proportions of separated years were investigated using the Cochran-Armitage ***-hospital prognosis and risk factors associated with in-hospital mortality were also invest *** A total of 33143 patients were included in the study[mean(SD)age,51.7(11.9)years],and 82.2%were *** mean age of the study population increased from 51.0 years in 2001-2010 to 52.0 years in 2011-2020(P<0.001),and the proportion of female patients increased from 16.7%in 2001-2010 to 18.2%in 2011-2020(P=0.003).LC patients in the decompensated stage at diagnosis decreased from 68.1%in 2001-2010 to 64.6%in 2011-2020(P<0.001),and the median score of model for end-stage liver disease also decreased from 14.0 to 11.0(P<0.001).HBV remained the major etiology of LC(75.0%)and the dominant cause of viral hepatitis-LC(94.5%)during th

关键词： Liver cirrhosis Epidemiology Etiology Upper gastrointestinal bleeding Hepatocellular carcinoma In-hospital mortality

Inhibiting MMP13 Attenuates Deep Vein Thrombosis in a Mouse Model by Reducing the Expression of Pdpn

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Current Medical Science 2024年第2期44卷 369-379页

作者： Ji luo jin ZHOU jing-zeng luo Hai-long WANG Xue-ling ZHAO Ru-dan ZHOU Department of Intensive Care Unit The First People's Hospital of ZiyangZiyang 641300China Department of Orthopedics Kunming Medical University Second Affiliated HospitalKunming 650033China Department of Orthopedics Kunming Medical University First Affiliated HospitalKunming 650032China Department of Orthopedics The Third People's Hospital of Yunnan ProvinceKunming 650200China

Objective:Matrix metalloproteinase 13(MMP13)is an extracellular matrix protease that affects the progression of atherosclerotic plaques and arterial thrombi by degrading collagens,modifying protein structures and regulating inflammatory responses,but its role in deep vein thrombosis(DVT)has not been *** purpose of this study was to investigate the potential effects of MMP13 and MMP13-related genes on the formation of ***:We altered the expression level of MMP13 in vivo and conducted a transcriptome study to examine the expression and relationship between MMP13 and MMP13-related genes in a mouse model of *** screening genes possibly related to MMP13 in DVT mice,the expression levels of candidate genes in human umbilical vein endothelial cells(HUVECs)and the venous wall were *** effect of MMP13 on platelet aggregation in HUVECs was investigated in ***:Among the differentially expressed genes,interleukin 1 beta,podoplanin(Pdpn),and factor VIII von Willebrand factor(F8VWF)were selected for analysis in *** MMP13 was inhibited,the expression level of PDPN decreased significantly in *** HUVECs,overexpression of MMP13 led to an increase in the expression level of PDPN and induced platelet aggregation,while transfection of PDPN-siRNA weakened the ability of MMP13 to increase platelet ***:Inhibiting the expression of MMP13 could reduce the burden of DVT in *** mechanism involves downregulating the expression of Pdpn through MMP13,which could provide a novel gene target for DVT diagnosis and treatment.

关键词： deep vein thrombosis matrix metalloproteinase 13 podoplanin

A Cloud-Fog Enabled and Privacy-Preserving IoT Data Market Platform Based on Blockchain

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Computer Modeling in Engineering & Sciences 2024年第5期139卷 2237-2260页

作者： Yurong luo Wei You Chao Shang Xiongpeng Ren jin Cao Hui Li School of Cyber Engineering State Key Laboratory of Integrated Service NetworkXidian UniversityXi’an710126China

The dynamic landscape of the Internet of Things(IoT)is set to revolutionize the pace of interaction among entities,ushering in a proliferation of applications characterized by heightened quality and *** the pivotal applications within the realm of IoT,as a significant example,the Smart Grid(SG)evolves into intricate networks of energy deployment marked by data *** evolution concurrently entails data interchange with other IoT ***,there are also several challenges including data-sharing overheads and the intricate establishment of trusted centers in the IoT *** this paper,we introduce a hierarchical secure data-sharing platform empowered by cloud-fog ***,we propose a novel non-interactive zero-knowledge proof-based group authentication and key agreement protocol that supports one-to-many sharing sets of IoT data,especially SG *** security formal verification tool shows that the proposed scheme can achieve mutual authentication and secure data sharing while protecting the privacy of data *** with previous IoT data sharing schemes,the proposed scheme has advantages in both computational and transmission efficiency,and has more superiority with the increasing volume of shared data or increasing number of participants.

关键词： IoT data sharing zero-knowledge proof authentication privacy preserving blockchain

3D-printed self-healing,biodegradable materials and their applications

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Frontiers of Mechanical Engineering 2024年第3期19卷 1-22页

作者： Yu LI Guangmeng MA Fawei GUO Chunyi luo Han WU Xin luo MingtaoZHANG Chenyun WANG Qingxin jin Yu LONG School of Mechanical Engineering Guangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China Institute of Laser Intelligent Manufacturing and Precision Processing School of Mechanical EngineeringGuangxi UniversityNanning 530004China College of Mechanical and Electrical Engineering Central South UniversityChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South UniversityChangsha 410083China

3D printing is a versatile technology capable of rapidly fabricating intricate geometric structures and enhancing the performance of flexible devices in comparison to conventional fabrication ***,3D-printed devices are susceptible to failure as a result of minuscule structural impairments,thereby impacting their overall *** utilization of self-healing,biodegradable materials in 3D printing holds immense potential for increasing the longevity and safety of devices,thereby expanding the application prospects for such ***,enhancing the self-repairing capability of devices and refining the 3D printing performance of self-healing materials are still considerable challenges that need to be addressed to achieve optimal *** paper reviews recent developments in the field of advancements in 3D printing using self-healing and biodegradable ***,it investigates self-healing and biodegradable materials that are compatible with 3D printing techniques,discussing their printability,material properties,and factors that influence print ***,it explores practical applications of selfhealing and biodegradable 3D printing technology in ***,it critically offers practical perspectives on this topic.

关键词： 3D printing self-healing biodegradable soft materials covalent bonds non-covalent bonds