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Design and experimental research on the sweet potato seedling transplanting mechanism of the planetary gear train with deformed elliptical gear transmission

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 91-99页

作者： Bingliang ye yuxuan ye Haili Zhou Gaohong Yu Xiong Zhao Bin Deng Faculty of Mechanical Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Zhejiang Province Key Laboratory of Transplanting Equipment and Technology Hangzhou 310018China Key Laboratory of Agricultural Equipment for Hilly and Mountainous Areas in Southeastern China(Co-construction by Ministry and Province) Ministry of Agriculture and Rural AffairsHangzhou 310018China

Aiming at the lack of suitable machines for sweet potato seedling transplanting in China,and according to the agronomic requirements for the horizontal insertion method of sweet potato seedling,a new sweet potato seedling transplanting mechanism of planetary gear train was proposed based on the non-uniform transmission of deformed elliptical *** working principle of the transplanting mechanism was analyzed,and the kinematics modeling and analysis of the mechanism were carried *** study established the numerical objectives of the transplanting mechanism and applied the theory of membership function to establish a mathematical model for the parameter-guided optimization design of the transplanting *** parameter-guided optimization design software was developed to obtain a set of optimal mechanism parameters that satisfied the motion trajectory of sweet potato transplanting and the posture of the transplanting *** on the optimized parameters,the structure of the transplanting mechanism was designed,and a virtual prototype of the mechanism was created,whereby a virtual motion simulation of the transplanting mechanism was conducted to verify the correctness of the kinematics model and design of the *** high-speed photographic kinematics test of the mechanism prototype and sweet potato seedling transplanting tests were conducted to test the mechanism’s kinematic characteristics and transplanting *** test results show that the test trajectory of the mechanism and test posture of the transplanting arm are almost consistent with the theoretical and simulation trajectory,meeting the agronomic requirements of the horizontal insertion method of sweet potato seedling;And when the rotary speed of the mechanism are 20 r/min and 30 r/min,the average success ratios of sweet potato seedlings transplanting are 90%and 82%,respectively,which prove the application feasibility of the mechanism in the practical machines.

关键词： sweet potato seedling transplanter transplanting mechanism deformed elliptical gear transmission kinematics analysis membership function optimization design

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Drought-Tolerant Rice at Molecular Breeding Eras:An Emerging Reality

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Rice science 2024年第2期31卷 179-189页

作者： ZHU Chengqi ye yuxuan QIU Tian HUANG Yafan YING Jifeng SHEN Zhicheng Institute of Insect Sciences Zhejiang UniversityHangzhou 310058China Performance Plants Inc. 1287 Gardiners RoadKingstonOntario K7P 3J6Canada China National Rice Research Institute Hangzhou 310006China

Rice(Oryza sativa L.)stands as the most significantly influential food crop in the developing world,with its total production and yield stability affected by environmental *** stress impacts about 45%of the world’s rice area,affecting plants at molecular,biochemical,physiological,and phenotypic *** conventional breeding method,predominantly employing single pedigree selection,has been widely utilized in breeding numerous drought-tolerant rice varieties since the Green *** rapid progress in plant molecular biology,hundreds of drought-tolerant QTLs/genes have been identified and tested in rice crops under both indoor and field *** genes have been introgressed into elite germplasm to develop commercially accepted drought-tolerant varieties,resulting in the development of several drought-tolerant rice varieties through marker-assisted selection and genetically engineered *** review provides up-to-date information on proof-of-concept genes and breeding methods in the molecular breeding era,offering guidance for rice breeders to develop drought-tolerant rice varieties.

关键词： conventional breeding drought stress drought tolerant rice genetic engineering marker-assisted selection breeding

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头针治疗血管性痴呆的作用机制研究进展

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实用中医内科杂志 2024年第8期38卷 118-121页

作者：李忍叶宇旋周蔚华广东省深圳市宝安区中医院广东深圳518100

血管性痴呆是指各种脑血管病及其并发症引起的痴呆综合征,临床上以认知功能损害为主要表现,伴有脑动脉粥样硬化所致的血管收缩,及脑血管血流动力学改变所致的脑缺血、缺氧等症状为特征。随着我国人口老龄化的加剧及社会经济压力的增加,... 详细信息

血管性痴呆是指各种脑血管病及其并发症引起的痴呆综合征,临床上以认知功能损害为主要表现,伴有脑动脉粥样硬化所致的血管收缩,及脑血管血流动力学改变所致的脑缺血、缺氧等症状为特征。随着我国人口老龄化的加剧及社会经济压力的增加,血管性痴呆患者人数不断增加。目前该病已成为我国老年医学的一个重要问题。笔者结合近年来国内外专家学者在治疗血管性痴呆方面的研究成果,将头针疗法对脑血流量、细胞因子、脑血流动力学及脑内神经递质等的影响进行综述,以期为今后临床及科研提供参考依据。

关键词：头针血管性痴呆研究进展综述

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祛瘀生新针法不同时间介入治疗脑梗死急性期溶栓后患者临床观察

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中国中医药现代远程教育 2024年第12期22卷 106-109页

作者：叶宇旋李忍周蔚华黄汝成深圳市宝安区中医院脑病科广东深圳514000 深圳市宝安区中医院康复科广东深圳514000

目的探究祛瘀生新针法介入脑梗死急性期溶栓后的针刺时机及临床疗效。方法选取2020年6月—2020年11月深圳市宝安中医院脑病科住院部的90例患者为研究对象,按就诊顺序编号,采用随机数字表法分为对照组、治疗1组、治疗2组。在对照组基础上... 详细信息

目的探究祛瘀生新针法介入脑梗死急性期溶栓后的针刺时机及临床疗效。方法选取2020年6月—2020年11月深圳市宝安中医院脑病科住院部的90例患者为研究对象,按就诊顺序编号,采用随机数字表法分为对照组、治疗1组、治疗2组。在对照组基础上,治疗1组在溶栓后24 h加入针刺,治疗2组在溶栓后7 d加入针刺。比较治疗前后的美国国立卫生研究院卒中量表(NIHSS)评分,日常生活活动能力量表(ADL)评分,改良Rankin量表(mRS)评分及细胞间黏附分子-1(ICAM-1)、内皮型一氧化氮合成酶(ENOS)、可溶性血栓调节蛋白(sTM)水平。结果三组患者的NIHSS、ADL、mRS评分优于治疗前(P0.05)。治疗1组和治疗2组的ICAM-1、ENOS、sTM水平优于对照组(P0.05)。结论在溶栓后24 h加祛瘀生新针,比在溶栓后7 d治疗效果好。

关键词：脑梗死祛瘀生新针法针刺时机

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Identifying the enhancement mechanism of Al/MoO_(3) reactive multilayered films on the ignition ability of semiconductor bridge using a one-dimensional gas-solid two-phase flow model

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Defence Technology（防务技术） 2024年第3期33卷 168-179页

作者： Jianbing Xu yuxuan Zhou Yun Shen Yueting Wang Yinghua ye Ruiqi Shen School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China Micro-Nano Energetic Devices Key Laboratory of MIIT Nanjing 210094China Institute of Space Propulsion Nanjing University of Science and TechnologyNanjing 210094China

Energetic Semiconductor bridge(ESCB)based on reactive multilayered films(RMFs)has a promising application in the miniature and intelligence of initiator and pyrotechnics *** the ignition enhancement mechanism of RMFs on semiconductor bridge(SCB)during the ignition process is crucial for the engineering and practical application of advanced initiator and pyrotechnics *** this study,a one-dimensional(1D)gas-solid two-phase flow ignition model was established to study the ignition process of ESCB to charge particles based on the reactivity of Al/MoO_(3) *** order to fully consider the coupled exothermic between the RMFs and the SCB plasma during the ignition process,the heat release of chemical reaction in RMFs was used as an internal heat source in this *** is found that the exothermal reaction in RMFs improved the ignition performance of *** the process of plasma rapid condensation with heat release,the product of RMFs enhanced the heat transfer process between the gas phase and the solid charge particle,which accelerated the expansion of hot plasma,and heated the solid charge particle as well as gas phase region with low *** addition,it made up for pressure loss in the gas *** the plasma dissipation process,the exothermal chemical reaction in RMFs acted as the main heating source to heat the charge particle,making the surface temperature of the charge particle,gas pressure,and gas temperature rise *** result may yield significant advantages in providing a universal ignition model for miniaturized ignition devices.

关键词： Ignition enhancement mechanism 1D gas-solid two-phase flow Al/MoO_(3)reactive multilayered films Semiconductor bridge Miniaturized ignition device

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谈市政公用工程的安全管理现状及对策

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工程建设（维泽科技） 2024年第6期7卷 54-57页

作者：叶玉铉杭州之江国家旅游度假区基础设施建设发展有限公司浙江杭州310000

改革开放之后,我国城镇化建设速度加快,这其中离不开各类城镇工程的建设,所以公用工程的建设项目数量越来越多,尤其是对高速公路(筛除)、高架、道路桥梁、隧道、天桥、地下通道、亚运会地铁配套道路及出站口风雨连廊等的兴建更是投入了... 详细信息

改革开放之后,我国城镇化建设速度加快,这其中离不开各类城镇工程的建设,所以公用工程的建设项目数量越来越多,尤其是对高速公路(筛除)、高架、道路桥梁、隧道、天桥、地下通道、亚运会地铁配套道路及出站口风雨连廊等的兴建更是投入了非常大的力度,但是在建设的过程中,其质量问题和事故高发生频率也受到了人们对它的质疑。为了稳定公用工程市场,进一步强化政府在人们心中的地位,本文从市政公用工程现状出发,探究减少建设施工安全生产事故的改进措施,以期扭转当前市政建设工程的发展形势,推动我国市政稳步发展。

关键词：市政公用工程安全管理现状及对策

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Non-woven cotton fabric based intimately coupling of photocatalysis and biodegradation system for efficient removal of Cu(Ⅱ)complex in water

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Chinese Chemical Letters 2022年第6期33卷 3127-3132页

作者： yuxuan ye Peng Yang Yuwei Deng yezhi Yang Kun Zhang Yueying Wang Wenjing Shang Qiang Li Lei Sun Fei Pan Dongsheng Xia School of Environmental Engineering Wuhan Textile UniversityWuhan 430073China Engineering Research Center for Clean Production of Textile Dyeing and Printing Ministry of EducationWuhan 430073China

The efficient remediation of heavy metal complexes in water has become a difficult and challenging task owing to their high stability and strong *** this study,a novel strategy was employed for highly efficient removal of Cu-citrate by using intimately coupled photocatalysis and biodegradation(ICPB)system with non-woven cotton fabric as a *** results showed that the ICPB system caused94%Cu removal,which was higher than those of single *** 5 cycles,Cu removal efficiency could still reach 78%within 5 *** existence of 0–40 mg/L citrate had negligible influence,whereas the presence of 60–100 mg/L citrate exhibited a limited adverse effect on Cu removal(~70%).The decomplexation of Cu-citrate was realized via the function of free radicals and *** main processes,such as bio-adsorption of Cu^(2+) by microorganisms,deposition of Cu^(0) on the surface of material,played important role in Cu removal from aqueous *** dominant microorganisms in the system were Proteobacteria,Actinobacteria,Bacteroidetes,Chloroflexi,Chlorophyta,Planctomycetes,and ***,the performance of ICPB system was also validated through treatment of other heavy metal *** study provided a feasible strategy for the decontamination of heavy metal complexes in wastewater.

关键词： Cu complex Photocatalysis Biological treatment Non-woven cotton fabric

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Efficient removal of tetracycline in water by a novel chemical and biological coupled system with non-woven cotton fabric as carrier

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Chinese Chemical Letters 2021年第9期32卷 2823-2827页

作者： Peng Yang yuxuan ye Zidu Yan Qiang Li Kun Zhang yezhi Yang Qiuyue Zhang Hang Yin Dongsheng Xia Fei Pan School of Environmental Engineering Wuhan Textile UniversityWuhan 430073China Engineering Research Center for Clean Production of Textile Dyeing and Printing Ministry of EducationWuhan 430073China

As a novel wastewater treatment strategy,the intimate coupling of photocatalysis and biodegradation(ICPB)has been attracted attention,which is ascribed to its combination of the advantages of photocatalytic reactions and biological *** selection of carriers is important since it affects the stability of the system and the removal efficiency of *** this study,a novel ICPB system was successfully constructed by loading photocatalytic materials(i.e.,TiO_(2),N-TiO_(2),and Ag-TiO_(2))and microbes onto non-woven cotton *** photocatalysts were characterized by scanning electron microscope-energy dispersive spectrometer(SEM-EDS),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).This system exhibited good performance in degrading tetracycline(TC)in *** results showed that Ag-TiO_(2)-ICPB had the maximum removal efficiency of tetracycline(94.7%)in 5 h,which was 16.5%higher than the photocatalysis *** five cycles,82.9%of tetracycline could be still degraded through Ag-TiO_(2)-*** spectrum showed microbes on the material changed little before and after the *** result implied the materials were stable,and then beneficial for degrading of pollutants *** intermediates were detected through ultraperformance liquid chromatography-mass spectrometer(UPLC-MS)and the plausible degradation pathways were *** paramagnetic resonance(EPR)analysis showed·OH and O_(2)·-were the main reactive oxygen species for TC *** conclusion,the ICPB system with non-woven cotton fabric as a carrier has certain application prospects for antibiotic-containing wastewater.

关键词： Photocatalysis Biological treatment ICPB Non-woven cotton fabric Tetracycline removal

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Mitigating the negative catalytic effect of CuO by FAS-17 coated Al nanopowder:Isothermal ageing of Al/CuO nanothermite at 71°C and 60%relative humidity

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Defence Technology（防务技术） 2024年第4期34卷 156-167页

作者： Fuwei Li Qian Wang Jian Cheng Zehua Zhang yuxuan Zhou Keer Ouyang Jianbing Xu Yinghua ye Ruiqi Shen School of Chemistry and Chemical Engineering Nanjing University of Science&TechnologyNanjing 210094China Micro-Nano Energetic Devices Key Laboratory Ministry of Industry and Information TechnologyNanjing 210094JiangsuChina Institute of Space Propulsion Nanjing University of Science and TechnologyNanjing 210094China

The safety and reliability of weapon systems would be significantly affected by changes in the performance of energetic materials due to ambient temperature and *** have promising applications due to their excellent *** it becomes extremely important to understand their aging and failure process in the environment before using ***,the aging and failure process of Al/CuO in 71°C/60%RH were investigated,and showed that CuO nanoparticles negatively catalyze Al nanopowders,resulting in rapid *** anti-aging effect of FAS-17-coated Al nanopowder was also *** aging process of Al,Al/CuO,and Al@FAS-17/CuO in high humidity and heat environment were revealed by quasi-in situ SEM and TEM *** with the aging of pure Al,the Al nanopowder in the nanothermites strongly agglomerated with the CuO nanopowder and hydrated *** may be caused by CuO catalyzed hydration of Al *** energy release experiments showed that the performance of Al/CuO decreased rapidly and failed to ignite after 4 h of *** contrast,the Al@FAS-17/CuO thermite can achieve long-term stability of up to 60 h in the same environment by simple cladding of *** is found that FAS-17 coated Al nanopowder can prevent both particle agglomeration and water erosion,which is an effective means to make nanothermites application in high humidity and heat environment.

关键词： Al/CuO nanothermite FAS-17 coating Aging and failure process

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针刺颅底五穴联合化痰通络汤治疗后循环梗死性眩晕的临床研究

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中西医结合心脑血管病杂志 2024年第13期22卷 2451-2456页

作者：方浩涛叶宇旋赵贝贝金远林黄汝成张芷如梁欢欢广州中医药大学第七临床医学院广东深圳518000 深圳市宝安区中医院广东深圳518000

目的:探讨针刺颅底五穴联合化痰通络汤对痰瘀阻络型急性后循环梗死性眩晕(PCIV)的临床疗效。方法:选取2022年10月—2023年10月在深圳市宝安区中医院诊断为后循环梗死性眩晕(脑梗死急性期)、中医辨证为痰瘀阻络证的病人114例作为研究对象... 详细信息

目的:探讨针刺颅底五穴联合化痰通络汤对痰瘀阻络型急性后循环梗死性眩晕(PCIV)的临床疗效。方法:选取2022年10月—2023年10月在深圳市宝安区中医院诊断为后循环梗死性眩晕(脑梗死急性期)、中医辨证为痰瘀阻络证的病人114例作为研究对象,按照随机数字表法分为观察组(54例)和对照组(60例),对照组给予口服化痰通络汤治疗,观察组在对照组基础上针刺颅底五穴治疗,两组均予神经内科基础治疗及对症支持治疗,疗程14 d。比较两组治疗前后的中医证候积分、眩晕障碍量表(DHI)积分、脑血流动力学指标、低密度脂蛋白胆固醇(LDL-C)、同型半胱氨酸(Hcy)、临床疗效。结果:与治疗前比较,两组治疗后中医证候积分、DHI积分、LDL-C、Hcy均显著下降(P<0.05);双侧椎动脉(VA)、基底动脉(BA)平均血流速度均显著升高(P<0.05)。与对照组比较,观察组治疗后中医证候积分显著降低(P<0.05),临床治疗总有效率升高(P<0.05)。与对照组比较,观察组治疗后VA、BA平均血流速度显著升高(P<0.05);DHI积分、LDL-C、Hcy显著下降(P<0.05)。结论:针刺颅底五穴联合化痰通络汤治疗痰瘀阻络型急性后循环梗死性眩晕的临床应用效果显著,可提高病人日常生活能力及生活质量,改善脑血流状态,调节脂代谢,保护脑血管。

关键词：后循环梗死性眩晕急性脑梗死颅底五穴痰瘀阻络

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