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A high-strength mineralized collagen bone scaffold for large-sized cranial bone defect repair in sheep

Regenerative Biomaterials 2018年第5期5卷 283-292页

作者： Shuo Wang Zhijun Zhao yongdong yang Antonios G.Mikos Zhiye Qiu Tianxi Song Fuzhai Cui XiumeiWang Chunyang Zhang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery The First Affiliated Hospital of Baotou Medical SchoolBaotou 014010China Dongzhimen Hospital Affiliated Beijing University of Chinese Medicine Beijing 100700China Department of Bioengineering Rice UniversityHoustonTX 77030USA Beijing Allgens Medical Science and Technology Co. Ltd.Beijing 100176China

Large-sized cranial bone defect repair presents a great challenge in the *** ideal cranioplasty materials to realize the functional and cosmetic recovery of the defect must have sufficient mechanical support,excellent biocompatibility,good osseointegration and biodegradability as *** this study,a high-strength mineralized collagen(MC)bone scaffold was developed with biomimetic composition,microstructure and mechanical properties for the repair of sheep largesized cranial bone defects in comparison with two traditional cranioplasty materials,polymethyl methacrylate and titanium *** compact MC scaffold showed no distinct pore structure and therefore possessed good mechanical *** strength and elastic modulus of the scaffold were much higher than those of natural cancellous bone and slightly lower than those of natural compact *** vitro cytocompatibility evaluation revealed that the human bone marrow mesenchymal stem cells(hBMSC)had good viability,attachment and proliferation on the compact MC scaffold indicating its excellent *** adult sheep cranial bone defect model was constructed to evaluate the performances of these cranioplasty materials in repairing the cranial bone *** results were investigated by gross observation,computed tomography scanning as well as histological *** in vivo evaluations indicated that compact MC scaffold showed notable osteoconductivity and osseointegration with surrounding cranial bone tissues by promoting bone *** results suggested that the compact MC scaffold has a promising potential for large-sized cranial bone defect repair.

关键词： mineralized collagen cranial bone defect bone regeneration sheep cranioplasty materials

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腐霉利及其代谢产物在百合上的残留行为研究

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山东化工 2024年第6期53卷 139-141,145页

作者：杨丹徐广邹艳郭瑀谭秋生邓才富雷美艳杨永东重庆市药物种植研究所重庆408435 重庆中医药学院重庆408435 重庆市南川区中医药产业创新发展中心重庆408435

目的:为研究腐霉利的安全使用,明确腐霉利及其代谢物3,5-二氯苯胺在百合上的残留行为,进行了腐霉利及其代谢产物在百合植株中的消解动态和百合鳞茎中的最终残留试验。方法:乙腈提取,GC-MS分析百合中中腐霉利及其代谢产物残留量。结果:... 详细信息

目的:为研究腐霉利的安全使用,明确腐霉利及其代谢物3,5-二氯苯胺在百合上的残留行为,进行了腐霉利及其代谢产物在百合植株中的消解动态和百合鳞茎中的最终残留试验。方法:乙腈提取,GC-MS分析百合中中腐霉利及其代谢产物残留量。结果:腐霉利在百合植株中的消解半衰期为21.29 d, 3,5-二氯苯胺在百合植株中的半衰期为33.55 d,两者在百合植株上的残留消解符合一级反应动力学方程。结论:该方法简单快速,可同时测定腐霉利及其代谢物,上述结果可为今后安全、合理、高效使用百菌清提供一定的参考价值。

关键词：百合腐霉利 3,5-二氯苯胺消解动态最终残留

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探究扭矩测量法获得骶骨螺钉双皮质固定的可行性

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生物骨科材料与临床研究 2024年第3期21卷 15-20页

作者：姜国正许卢春马昱堃关键斌杨永栋熊洋曲弋俞兴赵赫北京中医药大学附属东直门医院骨科北京100700 西安交通大学医学院附属红会医院骨科陕西西安710054

目的探究徒手结合扭矩测量法获得高骶骨螺钉双皮质率的可行性及获得双皮质固定最佳深度的方案。方法纳入2020年10月至2021年10月行后路腰椎动态固定的48例患者,根据螺钉置入深度分为双皮质180°组、360°组和720°组,对比各组病例骶骨... 详细信息

目的探究徒手结合扭矩测量法获得高骶骨螺钉双皮质率的可行性及获得双皮质固定最佳深度的方案。方法纳入2020年10月至2021年10月行后路腰椎动态固定的48例患者,根据螺钉置入深度分为双皮质180°组、360°组和720°组,对比各组病例骶骨螺钉置入扭矩、双皮质率及螺钉松动情况。结果所有病例平均随访时间为(13.5±5.1)个月(12~21个月)。双皮质180°组、360°组和720°组的双皮质率分别为66.67%、94.12%和93.75%:双皮质180°组与360°组、720°组比较,差异均有统计学意义(P0.05)。双皮质180°组、360°组和720°组骶骨螺钉松动率分别为23.33%、5.88%和3.13%:双皮质180°组与360°组、720°组比较,差异均有统计学意义(P0.05)。结论徒手结合扭矩测量法可以在较少经济支出情况下,获得较高骶骨双皮质率,安全性高,操作较为便捷,可辅助临床医生进行骶骨置钉。

关键词：腰椎退行性病变骶骨螺钉螺钉松动双皮质固定置钉扭矩置钉手感

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Review of Three-phase Soft Switching Inverters and Challenges for Motor Drives

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CES Transactions on Electrical Machines and Systems 2024年第2期8卷 177-190页

作者： Haifeng Lu Qiao Wang Jianyun Chai yongdong Li IEEE the Department of Electrical Engineering Tsinghua UniversityBeijing 100084China the School of Electrical Engineering Xinjiang UniversityUrumqi 830047China

For electric vehicles (EVs),it is necessary to improve endurance mileage by improving the *** exists a trend towards increasing the system voltage and switching frequency,contributing to improve charging speed and power ***,this trend poses significant challenges for high-voltage and high-frequency motor controllers,which are plagued by increased switching losses and pronounced switching oscillations as consequences of hard *** deployment of soft switching technology presents a viable solution to mitigate these *** paper reviews the applications of soft switching technologies for three-phase inverters and classifies them based on distinct *** each type of inverter,the advantages and disadvantages are ***,the paper introduces the research progress and control methods of soft switching inverters (SSIs).Moreover,it presents a comparative analysis among the conventional hard switching inverters (HSIs),an active clamping resonant DC link inverter (ACRDCLI) and an auxiliary resonant commuted pole inverter (ARCPI).Finally,the problems and prospects of soft switching technology applied to motor controllers for EVs are put forward.

关键词： Soft switching inverters Zero-voltage switching Electric vehicles Motor drives

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马铃薯新品种‘昆薯9号’的选育

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中国马铃薯 2024年第1期38卷 49-52页

作者：汪忠明储丽章杨永东谷春熠邹万君朱维贤昆明市农业科学研究院云南昆明650034

‘昆薯9号’是昆明市农业科学研究院利用品种‘会-2’作母本,国际马铃薯中心(CIP)引进材料‘CIP004(TPS-67)’作父本配制杂交组合,通过人工有性杂交选育出的中熟马铃薯新品种。2023年通过国家非主要农作物品种登记,登记编号:GPD马铃薯(2... 详细信息

‘昆薯9号’是昆明市农业科学研究院利用品种‘会-2’作母本,国际马铃薯中心(CIP)引进材料‘CIP004(TPS-67)’作父本配制杂交组合,通过人工有性杂交选育出的中熟马铃薯新品种。2023年通过国家非主要农作物品种登记,登记编号:GPD马铃薯(2023)530042。该品种生育期为105 d,适宜作为鲜食型品种。块茎圆形,芽眼浅、少,薯皮光滑、黄色,薯肉黄色。干物质含量14.00%、淀粉含量10.40%、蛋白质含量2.15%、维生素C含量23.20 mg/100 g、还原糖含量(以葡萄糖计)0.64%。耐贮运,蒸煮品质优,适口性好。抗青枯病、感晚疫病和卷叶病毒(Potato leafroll virus,PLRV)病。2013年和2014年品种比较试验中产量分别较对照‘合作88’增产66.20%和76.82%。2019—2021年冬播区域试验中,2019—2020年4个试验点‘昆薯9号’平均产量为3283 kg/667m^(2),较对照‘丽薯6号’(3778 kg/667m^(2))减产13.11%;2020—2021年4个试验点‘昆薯9号’平均产量为2864 kg/667m^(2),较对照‘丽薯6号’(3678 kg/667m^(2))减产22.14%。该品种适宜在云南省春、秋、冬作区种植。

关键词：马铃薯昆薯9号产量品质抗性

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Urban Traffic Control Meets Decision Recommendation System:A Survey and Perspective

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IEEE/CAA Journal of Automatica Sinica 2024年第10期11卷 2043-2058页

作者： Qingyuan Ji Xiaoyue Wen Junchen Jin yongdong Zhu Yisheng Lv Zhejiang Lab Hangzhou 311121China College of Engineering and Architecture Zhejiang UniversityHangzhou 310013China College of Electrical Engineering Zhejiang UniversityHangzhou 310013China the State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China IEEE

Urban traffic control is a multifaceted and demanding task that necessitates extensive decision-making to ensure the safety and efficiency of urban transportation *** approaches require traffic signal professionals to manually intervene on traffic control devices at the intersection level,utilizing their knowledge and ***,this process is cumbersome,labor-intensive,and cannot be applied on a large network *** studies have begun to explore the applicability of recommendation system for urban traffic control,which offer increased control efficiency and *** a decision recommendation system is complex,with various interdependent components,but a systematic literature review has not yet been *** this work,we present an up-to-date survey that elucidates all the detailed components of a recommendation system for urban traffic control,demonstrates the utility and efficacy of such a system in the real world using data and knowledgedriven approaches,and discusses the current challenges and potential future directions of this field.

关键词： Recommendation system traffic control traffic perception traffic prediction

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Electronic regulation to achieve efficient anaerobic digestion of organic fraction of municipal solid waste(OFMSW):strategies,challenges and potential solutions

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Frontiers of Environmental Science & Engineering 2024年第4期18卷 159-165页

作者： yongdong Chen Hong Wang Parisa Ghofrani-Isfahani Li Gu Xiaoguang Liu Xiaohu Dai State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Tongji UniversityShanghai 200092China Department of Chemical and Biochemical Engineering Technical University of DenmarkKgs Lyngby DK-2800Denmark College of Environment and Ecology Chongqing UniversityChongqing 400045China

Anaerobic digestion(AD)of organic fraction of municipal solid waste(OFMSW)is prone to system breakdown under high organic loading rates(OLRs)condition,which subsequently reduces the efficiency of digestion process and results in substantial economic *** this perspective paper,the substances metabolisms,electrons flow,as well as microbial interaction mechanisms within AD process are comprehensively discussed,and the underlying bottleneck that causes inefficient methane production is identified,which is“electrons surplus”.Systems encountering severe electron surplus are at risk of process failure,making it crucial to proactively prevent this phenomenon through appropriate *** this basis,the present perspective proposes three potential electronic regulation strategies to prevent electrons surplus,namely,electron shunt,accelerating electron transfer and regulating methanogenic metabolism pathway,and presents specific methodologies for each ***,the potential solutions to challenges that may occur during the electronic regulation process are also presented in this *** perspective aims to provide innovative approaches to achieve the efficient and stable operation of OFMSW anaerobic digestion,especially under high OLRs condition.

关键词： Anaerobic digestion Electrons surplus Electronic regulation Electrons shunt Electron transfer Methanogenic metabolism pathway

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The environmental analysis and site selection of mussel and large yellow croaker aquaculture areas based on high resolution remote sensing

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Acta Oceanologica Sinica 2024年第3期43卷 66-86页

作者： Lina Cai Jie Yin Xiaojun Yan yongdong Zhou Rong Tang Menghan Yu Marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316022China Zhejiang Marine Fisheries Research Institute Zhejiang Ocean UniversityZhoushan 316004China

Mussel aquaculture and large yellow croaker aquaculture areas and their environmental characteristics in Zhoushan were analyzed using satellite data and in-situ surveys.A new two-step remote sensing method was proposed and applied to determine the basic environmental characteristics of the best mussel and large yellow croaker aquaculture *** methodology includes the first step of extraction of the location distribution and the second step of the extraction of internal environmental *** fishery ranching index(FRI1,FRI2)was established to extract the mussel and the large yellow croaker aquaculture area in Zhoushan,using Gaofen-1(GF-1)and Gaofen-6(GF-6)satellite data with a special resolution of 2 *** the second step,the environmental factors such as sea surface temperature(SST),chlorophyll a(Chl-a)concentration,current and tide,suspended sediment concentration(SSC)in mussel aquaculture area and large yellow croaker aquaculture area were extracted and analyzed in *** results show the following three points.(1)For the extraction of the mussel aquaculture area,FRI1 and FRI2 are complementary,and the combination of FRI1 and FRI2 is suitable to extract the mussel aquaculture *** for the large yellow croaker aquaculture area extraction,FRI2 is suitable.(2)Mussel aquaculture and the large yellow croaker aquaculture area in Zhoushan are mainly located on the side near the islands that are away from the eastern open *** water environment factor template suitable for mussel and large yellow croaker aquaculture was determined.(3)This two-step remote sensing method can be used for the preliminary screening of potential site selection for the mussels and large yellow croaker aquaculture area in the *** fishery ranching index(FRI1,FRI2)in this paper can be applied to extract the mussel and large yellow croaker aquaculture areas in coastal waters around the world.

关键词： mussel aquaculture area large yellow croaker aquaculture area high resolution satellite site selection environmental analysis

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Non-Thermal Biological Effect of Graphene Far-Infrared Ray on Saccharomyces cerevisiae Cells

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Journal of Biosciences and Medicines 2022年第6期10卷 103-112页

作者： Miao Tian Qing Li yongdong yang Danyu Li Qing Tang Jinlai Li Hong Wu ENNOVA Institute of Life Science and Technology ENN Group Langfang China ENN Graphene Technology Co. Ltd. Langfang China

Graphene materials can emit far-infrared ray, but the biological effects of graphene far-infrared ray have not been studied. Furthermore, the non-thermal biological effect of far-infrared ray on organism has not been systematically studied independently of the thermal effect. The purpose of this study was to investigate the non-thermal biological effect of graphene far-infrared ray (gFIR) on Saccharomyces cerevisiae cells. In this work, stringent control of the cultivation conditions was carried out to ensure the stability and constancy of the culture and its temperature. Flow cytometry was used to detect the non-thermal effect of gFIR irradiation on cell membrane permeability, mitochondrial membrane potential (MMP) and intracellular reactive oxygen species (ROS) content. Compared with the control group, cell membrane permeability of the gFIR exposure cells decreased by 4.7%, MMP increased by 16% and intracellular ROS reduced by 10.7%. The results revealed the valuable features of the non-thermal biological effect of gFIR on Saccharomyces cerevisiae cells, and the further analysis demonstrated that graphene far-infrared materials should have great application value in disease prevention and health promotion.

关键词： Graphene Far-Infrared Ray Non-Thermal Biological Effect Saccharomyces cerevisiae Cell Membrane Permeability Mitochondrial Membrane Potential Reactive Oxygen Species

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Biphasic mineralized collagen-based composite scaffold for cranial bone regeneration in developing sheep

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Regenerative Biomaterials 2022年第1期9卷 280-293页

作者： Jingchuan Zheng Zhijun Zhao yongdong yang Shuo Wang Yonggang Zhao yang Xiong Shuhui yang Zhiye Qiu Tianxi Song Chunyang Zhang Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery The First Affiliated Hospital of Baotou Medical SchoolBaotou 014010China Dongzhimen Hospital Affiliated Beijing University of Chinese Medicine Beijing 100700China Beijing Allgens Medical Science and Technology Co. Ltd.Beijing 100176China

Appropriate mechanical support and excellent osteogenic capability are two essential prerequisites of customized implants for regenerating large-sized cranial bone *** porous bone scaffolds have been widely proven to promote bone regeneration,their weak mechanical properties limit the clinical applications in ***,we applied two previously developed mineralized collagen-based bone scaffolds(MC),porous MC(pMC)and compact MC(cMC)to construct a biphasic MC composite bone scaffold(bMC)to repair the large-sized cranial bone defect in developing sheep.A supporting frame composed of cMC phase in the shape of tic–tac–toe structure was fabricated first and then embedded in pMC *** two phases had good interfacial bond,attributing to the formation of an interfacial *** in vivo performance of the bMC scaffold was evaluated by using a cranial bone defect model in 1-month-old *** computed tomography imaging,X-ray scanning and histological evaluation showed that the pMC phase in the bMC scaffold,similar to the pMC scaffold,was gradually replaced by the regenerative bone tissues with comprehensively increased bone mineral density and complete connection of bone bridge in the whole *** cMC frame promoted new bone formation beneath the frame without obvious degradation,thus providing appropriate mechanical protection and ensuring the structural integrity of the *** general,the sheep with bMC implantation exhibited the best status of survival,growth and the repair *** biphasic structural design may be a prospective strategy for developing new generation of cranioplasty materials to regenerate cranial bone defect in clinic.

关键词： mineralized collagen cranial bone defect biphasic composite scaffold,developing sheep

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