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锁定钢板内固定与关节镜下双排锚钉缝合桥技术治疗肱骨大结节撕脱骨折的疗效对比研究

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现代生物医学进展 2024年第11期24卷 2120-2124页

作者：陆英超陈向阳冯硕袁斌陆博徐州医科大学第一临床医学院江苏徐州221000 江苏省新沂市人民医院骨科江苏新沂221400 徐州医科大学附属医院骨科江苏徐州221000

目的:对比肱骨大结节撕脱骨折分别采用关节镜下双排锚钉缝合桥技术、锁定钢板内固定后的疗效。方法:按照治疗方法的不同,将74例肱骨大结节撕脱骨折患者分为A组(锁定钢板内固定治疗,n=35)和B组(关节镜下双排锚钉缝合桥技术,n=39)。对比... 详细信息

目的:对比肱骨大结节撕脱骨折分别采用关节镜下双排锚钉缝合桥技术、锁定钢板内固定后的疗效。方法:按照治疗方法的不同,将74例肱骨大结节撕脱骨折患者分为A组(锁定钢板内固定治疗,n=35)和B组(关节镜下双排锚钉缝合桥技术,n=39)。对比两组美国肩肘外科医师评分(ASES)、肩关节活动度、视觉模拟评分(VAS)、围手术期相关指标、美国加州洛杉矶大学功能评分(UCLA)、术后并发症。结果:两组骨折愈合时间及并发症发生率组间对比未见差异(P>0.05)。B组术中出血量少于A组,住院时间短于A组,手术时间长于A组(P<0.05)。B组术后VAS评分较A组更低,ASES、UCLA评分高于A组(P<0.05)。B组术后后伸、前屈、外展、内收活动度大于A组(P<0.05)。结论:与锁定钢板内固定治疗肱骨大结节撕脱骨折相比,关节镜下双排锚钉缝合桥技术手术时间偏长,但其在减轻患者术后疼痛、改善肩关节功能、扩大肩关节活动度方面更具优势。

关键词：肱骨大结节撕脱骨折双排锚钉缝合桥技术关节镜锁定钢板内固定疗效

Force Compensation Control for Electro-Hydraulic Servo System with Pump-Valve Compound Drive via QFT-DTOC

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Chinese Journal of Mechanical Engineering 2024年第2期37卷 228-246页

作者： Kaixian Ba yuan Wang Xiaolong He Chunyu Wang bin Yu Yaliang Liu Xiangdong Kong Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control Qinhuangdao 066004China School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China National Engineering Research Center for Local Joint of Advanced Manufacturing Technology and Equipment Yanshan UniversityQinhuangdao 066004China

Each joint of a hydraulic-driven legged robot adopts a highly integrated hydraulic drive unit(HDU),which features a high power-weight ***,most HDUs are throttling-valve-controlled cylinder systems,which exhibit high energy *** contrast,pump control systems offer a high ***,their response ability is *** fully utilize the advantages of pump and valve control systems,in this study,a new type of pump-valve compound drive system(PCDS)is designed,which can not only effectively reduce the energy loss,but can also ensure the response speed and response accuracy of the HDUs in robot joints to satisfy the performance requirements of ***,considering the force control requirements of energy conservation,high precision,and fast response of the robot joint HDU,a nonlinear mathematical model of the PCDS force control system is first *** addition,pressure-flow nonlinearity,friction nonlinearity,load complexity and variability,and other factors affecting the system are considered,and a novel force control method based on quantitative feedback theory(QFT)and a disturbance torque observer(DTO)is designed,which is denoted as QFT-DTOC *** method improves the control accuracy and robustness of the force control system,reduces the effect of the disturbance torque on the control performance of the servo motor,and improves the overall force control performance of the ***,experimental verification is performed using the PCDS performance test *** experimental results and quantitative data show that the QFT-DTOC proposed herein can significantly improve the force control performance of the *** relevant force control method can be used as a bottom-control method for the hydraulic servo system to provide a foundation for implementing the top-level trajectory planning of the robot.

关键词： Legged robot Pump-valve compound drive system(PCDS) Force compensation control Quantitative feedback theory(QFT) Disturbance torque observer(DTO)

Full-parameter omnidirectional transformation optical devices

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National Science Review 2024年第3期11卷 92-99页

作者： yuan Gao Yu Luo Jingjing Zhang Zhengjie Huang bin Zheng Hongsheng Chen Dexin Ye Interdisciplinary Center for Quantum Information State Key Laboratory of Extreme Photonics and InstrumentationZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang University School of Electrical and Electronic Engineering Nanyang Technological University CNRS-InternationalNTU-Thales Research Alliance Nanyang Technological University Institute of Electromagnetic Space Southeast University State Key Laboratory of Millimeter Waves Southeast University International Joint Innovation Center The Electromagnetics Academy at Zhejiang University Zhejiang University Key Laboratory of Advanced Micro/Nano Electronic Devices&Smart Systems of Zhejiang Jinhua Institute of Zhejiang UniversityZhejiang University Shaoxing Institute of Zhejiang University Zhejiang University

Transformation optics(TO) provides an unprecedented technique to control electromagnetic(EM) waves by engineering the constitutive parameters of the surrounding medium through a proper spatial transformation. In general, ideal transformation optical devices require simultaneous electric and magnetic responses along all three dimensions. To ease the practical implementation, previous studies usually made use of reduced parameters or other simplified approaches, which inevitably introduce extra reflection or unwanted phase shift. Up to today, experimental realizations of full-parameter transformation optical devices in free space are still quite limited. Here, a general design strategy is proposed to solve this *** a specific example, a full-parameter spatial-compression TO medium with constitutive parameters taking the diagonal form diag(a, a, 1/a) for the TM wave incidence was designed and realized experimentally. Such spatial-compression TO media were then applied to the implementation of an ideal omnidirectional invisibility cloak capable of concealing a large-scale object over a wide range of illumination angles. Both the simulation and experiment confirm that the cloak allows for nearly unity transmission of EM waves in the forward direction without introducing extra scattering or phase shift. This work constitutes an important stepping stone for future practical implementation of arbitrary full-parameter omnidirectional transformation optical devices.

关键词： transformation optical devices omnidirectional impedance matching full-parameter invisibility cloak

Improving Rice Blast Resistance by Mining Broad-Spectrum Resistance Genes at Pik Locus

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Rice science 2022年第2期29卷 133-142页

作者： ZHOU Ying WAN Tao yuan bin LEI Fang CHEN Meijuan WANG Qiong HUANG Ping KOU Shuyan QIU Wenxiu LIU Li College of Life Science and Health Wuhan University of Science and TechnologyWuhan 430065China College of Life Sciences Hubei UniversityWuhan 430062China Key Laboratory of Integrated Management of Crops of Central China Ministry of Agriculture and Rural Affairs/Hubei Key Laboratory of Crop DiseaseInsect Pests and Weeds ControlWuhan 430064China College of Information Huazhong Agricultural UniversityWuhan 430070China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China Institute of Food Crops Yunnan Academy of Agriculture SciencesKunming 650205China

Magnaporthe oryzae is known for its genetic diversity and pathogenic variability,leading to rapid breakdown of resistance in *** multiple broad-spectrum blast resistance genes into rice cultivars would extend disease resistance *** resistance breeding in rice therefore requires continual enrichment of the reservoir of resistance genes and *** conducted a large-scale screen of rice blast resistance in about 2000 rice *** them,247 accessions showed at least medium resistance to the natural infection of rice blast and 7 novel Pik alleles were identified from *** in gene sequences were then correlated with the phenotypic trait to enable the identification of favorable *** the seven novel Pik alleles,the resistant rate of Pik-R0/ME/7017 donors was greater than 80%,and the disease score was less than *** molecular marker-assisted backcross breeding,we successfully transferred the three Pik alleles,Pik-R0/ME/7017,into an elite cultivated line Kongyu 131 to obtain BC_(3)F_(2)lines,which showed enhanced resistance to rice blast compared with the recurrent *** of these near-isogenic lines in the greenhouse using 31 isolates of *** from Heilongjiang Province of China revealed that the resistant levels of the BC_(3)F_(2)lines with Pik-R0/ME/7017 were significantly higher than those of the established cloned resistance genes Pik-m and *** such alleles will enrich our gene library for resistance to rice blast.

关键词： genetic diversity near-isogenic line Pik gene resistance gene allele rice blast R gene

白花丹醌抑制肝癌类干细胞增殖迁移及干性转录因子的表达

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海南医学院学报 2024年第14期30卷 1059-1067页

作者：周凤玲陈婉君黄德伦马远征袁彬叶一娴韦晓洁韦燕飞广西中医药大学基础医学院广西南宁530200

目的:探索白花丹醌(Plumbagin, PLB)对肝癌类干细胞增殖迁移及干性转录因子表达的影响。方法:采用多细胞肿瘤球体模式培养富集肝癌类干细胞,设置肝癌细胞组与肝癌类干细胞组,PLB浓度0、5、7.5、10μmol/L组,药物作用时间为24 h,采用MTT... 详细信息

目的:探索白花丹醌(Plumbagin, PLB)对肝癌类干细胞增殖迁移及干性转录因子表达的影响。方法:采用多细胞肿瘤球体模式培养富集肝癌类干细胞,设置肝癌细胞组与肝癌类干细胞组,PLB浓度0、5、7.5、10μmol/L组,药物作用时间为24 h,采用MTT法、平板克隆实验、悬浮干细胞成球实验和划痕实验检测细胞增殖、体外成球和迁移能力;qRTPCR和Western blotting检测干性基因和干性蛋白的表达。结果:成功富集肝癌HepG2类干细胞,与肝癌HepG2细胞组比较,肝癌HepG2类干细胞组细胞克隆形成率降低、划痕愈合率和体外成球率升高,差异具有统计学意义(P<0.05);与PLB 0μmol/L组比较,PLB 5、7.5、10μmol/L组,肝癌HepG2类干细胞克隆形成率、体外成球率和划痕愈合率均降低,EpCAM、BMI1、cMYC、Oct4、Nanog干性相关基因及Notch信号通路mRNA的表达水平降低,cMYC蛋白表达水平降低,差异具有统计学意义(P<0.05)。结论:PLB可抑制肝癌HepG2类干细胞增殖、迁移及体外成球能力,从而抑制肝癌细胞干性,其机制可能与下调EpCAM、BMI1、cMYC、Oct4、Nanog干性相关基因和Notch信号通路mRNA的表达水平,以及cMYC蛋白的表达水平有关。

关键词：白花丹醌肝癌细胞干性干性标记物增殖迁移

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齐墩果酸对肝癌HCCLM3细胞裸鼠移植瘤的抑制作用及机制研究

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中国癌症防治杂志 2024年第2期16卷 166-171页

作者：袁彬黄德伦周凤玲叶一娴周小琦韦燕飞广西中医药大学基础医学院南宁530200 广西高校中药神经-代谢及免疫药理重点实验室(广西中医药大学)

目的研究齐墩果酸对人肝癌HCCLM3细胞裸鼠移植瘤生长的影响,并探讨其对肿瘤组织凋亡及相关基因表达的影响。方法BALB/c裸鼠皮下接种人肝癌细胞株HCCLM3构建肝癌移植瘤模型,随机分为模型组和药物组,分别给予0.01 mL/g玉米油和5 mg/kg齐... 详细信息

目的研究齐墩果酸对人肝癌HCCLM3细胞裸鼠移植瘤生长的影响,并探讨其对肿瘤组织凋亡及相关基因表达的影响。方法BALB/c裸鼠皮下接种人肝癌细胞株HCCLM3构建肝癌移植瘤模型,随机分为模型组和药物组,分别给予0.01 mL/g玉米油和5 mg/kg齐墩果酸灌胃。给药期间测量并记录各组裸鼠的一般状态、体质量、瘤体质量和体积。通过HE、Ki67、TUNEL染色分别检测移植瘤组织中细胞坏死病理学改变、细胞增殖、细胞凋亡情况;采用qRT‐PCR检测移植瘤组织中CyclinD1、CyclinE1、CDK4、Bcl⁃2和Bax基因的mRNA表达水平。结果与模型组相比,药物组裸鼠体质量无明显差异,移植瘤体质量和体积均显著下降(均P0.05);抑凋亡相关基因Bcl⁃2的mRNA表达水平降低(P<0.05),而促凋亡相关基因Bax的mRNA表达水平升高(P<0.01)。结论齐墩果酸能抑制人肝癌HCCLM3细胞裸鼠移植瘤生长,其机制可能与抑制细胞增殖和诱导细胞凋亡相关。

关键词：肝癌齐墩果酸移植瘤增殖凋亡

Effectivenss of electroacupuncture for skeletal muscle pain in Parkinson's disease:a Clinical randomized controlled trial

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Journal of Traditional Chinese Medicine 2024年第2期44卷 388-395页

作者： WANG Shaosong SUN Jingqing FENG Qingyin LI bin WANG Xin yuan Fan CUI Yingxue Department of acupuncture Beijing Hospital of Traditional Chinese MedicineBeijing 100010China

OBJECTIVE:To explore the effect of electroacupuncture on skeletal muscle pain in Parkinson's disease(PD).METHODS:A single-center randomized controlled trial was conducted with sixty patients with Parkinson's disease with skeletal muscle pain were randomly divided into electroacupuncture group and sham acupuncture control group with 30 patients *** electric acupuncture group was treated with electric acupuncture,while the control group was treated with Park needle *** groups were treated 5 times a week for a total of 4 weeks,and both groups completed 20 ***'s Parkinson's Pain Scale(KPPS)and visual analog scale(VAS)were used before and after treatment to evaluate the pain degree of *** shear wave elastography(SWE)and modified Ashworth score(MAS)were used to evaluate the changes of muscle ***'s comprehensive Score Scale(MDS-UPDRS,including UPDRS Ⅱ and UPDRS Ⅲ)was used to evaluate exercise *** Depression Scale(HAMD)score was used to evaluate the emotional changes of *** correlation analysis was used to explore the correlation between pain degree and muscle tone,exercise ability and ***:During the study,one case fell off in the control group,and 30 cases were eventually included in the analysis and treatment group and 29 cases in the control *** treatment,Young's modulus of biceps and quadriceps and shear wave velocity of biceps were decreased in electroacupuncture group compared with before treatment,while KPPS score,VAS score,UPDRS Ⅱ,UPDRS Ⅲ and modified Ashworth score were decreased,with statistical significance(P0.05).After treatment,KPPS score,VAS score,UPDRS Ⅱ and UPDRS Ⅲ,MAS,HAMD score,Young's modulus of biceps and shear wave velocity in electroacupuncture group were significantly lower than those in control group(P<0.05).Spearman correlation analysis showed that KPPS score was positively correl

关键词： Parkinson disease muscle skeletal pain electroacupuncture muscle tention mood disorders randomized controlled trial

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A Single-Event-Transient Hardened Phase Locked Loop for Clock and Data Recovery

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Chinese Journal of Electronics 2024年第2期33卷 353-361页

作者： Hengzhou yuan bin LIANG Hao SANG Weixia XU Yang GUO Xi CHEN National University of Defense Technology

A radiation-hardened phase-locked loop is proposed for phase interpolator clock and data recovery purposes. A sensitive node-compressed charge pump and multi-node cross coupling voltage-controlled oscillators are proposed in this phase-locked loop with the goal of achieving good jitter performance and improving anti-SET（SET,single-event transient） capability. The root mean square（RMS） jitter of the phase-locked loop is reduced from 3.7 ps to 2.58 ps at 2 GHz, while the laser threshold is improved from 120 p J to 370 p J compared to the unhardened phaselocked loop. The hardened phase-locked loop also does not lose its lock state from linear energy transfers（LETs） of 3.3 to 37.3 Me V·cm2/mg.

关键词： Charge pumps Voltage-controlled oscillators Energy exchange Noise Lasers Jitter Phase locked loops

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Reduction behavior of iron ore powder by high-volatile coal in thermogravimetric-gas chromatographic and kinetic analysis

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Journal of Iron and Steel Research(International) 2024年第1期31卷 92-107页

作者： Rui-meng Shi Qi-yuan Mi bin Li Xiao Shi Chong Zou Jing Guo Han-jie Guo School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina China International Engineering Consulting Corporation Beijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China

The reduction behavior of iron ore powder by high-volatile coal was investigated,and its kinetic mechanism was *** effect of volatiles in coal on the reduction reaction of iron ore was compared by utilizing a Xinjiang lignite with a high volatile content and its pyrolysis carbon produced by high-temperature pyrolysis to remove volatiles,serving as a *** mass loss and gas composition of the samples during the reduction process were detected using thermo-gravimetric analysis and gas chromatography,and the morphological changes of iron ore powder were observed through scanning electron *** kinetic parameters of the iron oxide reduction reaction were calculated by the Flynn-Ozawa-Wall method,and the kinetic mechanism of volatile participation in the iron oxide reduction reaction was determined through the Coats-Redfern *** results indicate that the coupling effect between the high-volatile coal pyrolysis and reduction reactions occurs during the second stage of the entire coupling process,which corresponds to the late stage of coal pyrolysis with a substantial release of H_(2)and *** volatiles in coal actively participated in the reduction reaction,reducing the initiation temperature of the reaction by around 200℃.The reduction of iron oxides by high-volatile coal was jointly promoted by the"hydrogen cycle"and"carbon cycle",resulting in a higher reduction extent and metallization rate at the end of the *** high-volatile coal was used as the reductant,the average activation energy for the entire process was 76.5 kJ/mol,a significant decrease compared to the employment of pyrolysis carbon without volatiles as the reductant(1167 kJ/mol).

关键词： Direct reduction High-volatile coal Volatile Kinetics Reduction mechanism