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Chinese Journal of Polymer Science 2024年第9期42卷 1270-1277,I0005页

作者： Yue Huang Guang-tao mei Zan Hua Guang-Ming Liu Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical PhysicsKey Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education InstitutesUniversity of Science and Technology of ChinaHefei230026China The Key Laboratory of Functional Molecular Solids Ministry of Educationand Department of Materials ChemistrySchool of Chemistry and Materials ScienceAnhui Normal UniversityWuhu214002China

The counterion-mediated hydrogen bonding(CMHB)is related to the hydrogen bonding between bound counterions and polyelectrolyte chains in polyelectrolyte systems,where the counterions can both electrostatically bind to the charged groups of polyelectrolyte chains and act as hydrogen bond donors or acceptors to form hydrogen bonds with the hydrogen bond sites associated with polyelectrolyte chains simultaneously.A large number of literatures illustrate that strong polyelectrolytes(SPs)are insensitive to pH,which severely limmits the applications of SPs as smart ***,our studies have demonstrated that the CMHB makes SPs *** perspective discusses the mechanism of pH responsiveness of SPs and the pH-tunable properties of SPs,based on the pH-controlled CMHB *** future research directions on the pH responsiveness of SPs are also discussed *** is anticipated that the study of the pH responsiveness of SPs not only will provide a new understanding of the fundamental properties of SPs,but also will greatly expand the applications of SPs in the field of smart materials.

关键词： Counterion binding Hydrogen bond Polyelectrolyte brush Polyelectrolyte complexation

Correlation of preoperative inflammatory factors and emotional disorders with postoperative delirium in patients with craniocerebral trauma

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World Journal of Psychiatry 2024年第7期14卷 1043-1052页

作者： Peng Cao Zhe-Yong Jia tao Zheng tao mei Department of Neurosurgery Changde HospitalXiangya School of MedicineCentral South University(The First People’s Hospital of Changde City)Changde 415003Hunan ProvinceChina

BACKGROUND Traumatic brain injury(TBI)imposes a substantial societal and familial burden due to its high disability and fatality rates,rendering it a serious public health *** patients with TBI have poor treatment outcomes and are prone to postoperative delirium(POD),which affects their quality of *** has been linked to increased POD incidence in some studies,while others have found no *** To investigate the correlation of POD risk factors,preoperative inflammatory factors,and mood disorders in patients with *** We retrospectively collected data on the treatment of 80 patients with TBI from November 2021 to September *** were grouped as POD and non-POD,according to their POD status,and the general data of the two groups were *** factor levels were detected preoperatively,and the Hamilton Depression Scale(HAMD)and Hamilton Anxiety Scale(HAMA)were used to investigate the risk factors associated with POD in these *** regression was used to identify the independent risk *** Twenty-one patients(26.25%)developed POD,including 7,10,and 4 cases of the excitatory,inhibitory,and mixed types,*** were 59 cases(73.75%)in the non-POD *** with the non-POD group,the POD group had a significantly higher proportion of patients with low Glasgow Coma Scale(GCS)scores before admission,unilateral mydriasis,preoperative hemorrhagic shock,intraventricular hemorrhage(IVH),and postoperative hyperglycemic hyperosmolar disease(P<0.05).In the POD group,interleukin-6(IL-6),human tumor necrosis factor-α(TNF-α),myeloperoxidase levels,HAMA,and HAMD scores were higher than those in the non-POD group(all P<0.05).Logistic multivariate analysis showed that GCS score at admission,IVH,IL-6,TNF-α,HAMA,and HAMD were independent risk factors for POD in patients with TBI(P<0.05).CONCLUSION Low GCS score at admission,IVH,elevated IL-6 and TNF-α,other inflammatory indicators,anxiety,and depress

关键词： Inflammatory factors Mood disorders Traumatic brain injury Postoperative delirium Relevance Risk factor

Comparison efficacy and safety of total laparoscopic gastrectomy and laparoscopically assisted total gastrectomy in treatment of gastric cancer

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1871-1882页

作者： Long Li Dong-Yuan Liu Jing Leng Xue-mei tao Hui-Qin Wu Yan-Peng Zhu Department of General Surgery The 971^(st)Hospital of Chinese People's Liberation ArmyQingdao 266071Shandong ProvinceChina Department of Surgery Qingdao Municipal HospitalQingdao 266071Shandong ProvinceChina Hyperbaric Oxygen Department The Eighth Peoples Hospital of QingdaoQingdao 266121Shandong ProvinceChina Department of Gastrointestinal Surgery The First Affiliated Hospital of Naval Medical UniversityShanghai 200433China

BACKGROUND The development of laparoscopic technology has provided a new choice for surgery of gastric cancer(GC),but the advantages and disadvantages of laparoscopic total gastrectomy(LTG)and laparoscopic-assisted total gastrectomy(LATG)in treatment effect and safety are still *** purpose of this study is to compare the efficacy and safety of the two methods in the treatment of GC,and to provide a basis for clinical *** To compare the efficacy of totally LTG(TLTG)and LATG in the context of radical gastrectomy for ***,we investigated the safety and feasibility of the total laparoscopic esophagojejunostomy *** Literature on comparative studies of the above two surgical methods for GC(TLTG group and LATG group)published before September 2022 were searched in the PubMed,Web of Science,Wanfang Database,CNKI,and other Chinese and English *** addition,the following search keywords were used:Gastric cancer,total gastrectomy,total laparoscopy,laparoscopy-assisted,esophagojejunal anastomosis,gastric/stomach cancer,total gastrectomy,totally/completely laparoscopic,laparoscopic assisted/laparoscopy assisted/laparoscopically assisted,and esophagojejunostomy/esophagojejunal *** Manager 5.3 software was used for the meta-analysis after two researchers independently screened the literature,extracted the data,and evaluated the risk of bias in the included *** After layer-by-layer screening,258 pieces of literature were recovered,and 11 of those pieces were eventually *** resulted in a sample size of 2421 instances,with 1115 cases falling into the TLTG group and 1306 cases into the LATG *** or sex differences between the two groups were not statistically significant,according to the meta-analysis,however the average body mass index of the TLTG group was considerably higher than that of the LATG group(P=0.01).Compared with those in the LATG group,the incision length in the TLTG

关键词： Total laparoscopic gastrectomy Laparoscopically assisted total gastrectomy Gastric cancer Meta-analysis

Direct-acting antivirals failed to reduce the incidence of hepatocellular carcinoma occurrence in hepatitis C virus associated cirrhosis: A real-world study

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World Journal of Hepatology 2024年第1期16卷 41-53页

作者： Xue-mei tao Ming-Hui Zeng You-Fei Zhao Jia-Xin Han Yu-Qiang Mi Liang Xu Clinical School of the Second People’s Hospital Tianjin Medical UniversityTianjin 300192China Department of Hepatology Tianjin Second People’s HospitalTianjin 300192China Department of Hepatology Tianjin Research Institute of Liver DiseasesTianjin 300192China

BACKGROUND Direct-acting antivirals(DAAs)revolutionized the treatment of chronic hepatitis C virus(HCV)-associated disease achieving high rates of sustained virological response(SVR).However,whether DAAs can reduce the occurrence of hepatocellular carcinoma(HCC)in patients with HCV-associated cirrhosis who are at high risk have not been *** To investigate the effect of DAAs on the occurrence of HCC in patients with HCVassociated cirrhosis after achieving *** Of 427 inpatients with HCV-associated cirrhosis were enrolled in Tianjin Second People's Hospital from January 2014 to April 2020.118 patients weren’t received antiviral treatment with any reasons named non-antiviral treatment group,and 236 patients obtained from the 309 DAAs treatment patients according to the propensity score matching named DAAs treatment *** information and laboratory data were collected from baseline and the following ***-meier curve and Log-Rank test were used to compare the incidence and cumulative incidence of HCC between the two *** proportional risk regression was used to re-evaluate the risk factors for *** HCC incidence was 4.68/100PY(95%CI,3.09-6.81)in the DAAs treatment group,while it was 3.00/100PY(95%CI,1.50-5.37)in the non-antiviral treatment group,and the relative risk was 1.82(95%CI,0.93-3.53,P>0.05).The incidence of HCC at 12,24,36 and 48 months was 3.39%,6.36%,8.47%and 10.17%in the DAAs treatment group,and it was 0%,0%,3.39%and 9.32%in the non-antiviral treatment group,***>58[hazard ratio(HR)=1.089;95%CI,1.033-1.147;P=0.002]and liver stiffness measurement>27.85 kPa(HR=1.043;95%CI,1.022-1.065;P=0.000)were risk factors for HCC in all patients(n=427),and DAAs treatment didn’t show protective *** DAAs treatment seems failed to reduce the incidence of HCC occurrence in HCV-associated cirrhosis in 48 months,and even increased the incidence of HCC in 36 months.

关键词： Direct-acting antivirals Sustained viral response Cirrhosis Hepatocellular carcinoma Risk factor

AB型GM2神经节苷脂沉积症基因型、表型分析:1例报道并文献复习

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解放军医学杂志 2024年第4期49卷 432-438页

作者：陶美姣黄萍杨光广西医学科学院/广西壮族自治区人民医院儿科广西南宁530021 解放军总医院儿科医学部北京100853

目的探讨儿童期起病的AB型GM2神经节苷脂沉积症(GM2-GLS)的基因型和表型特点。方法报告广西壮族自治区人民医院儿科于2022年3月诊治的1例经Trio全外显子检测明确诊断的4岁起病的AB型GM2-GLS患儿,分析其临床资料及基因检测结果;检索PubMe... 详细信息

目的探讨儿童期起病的AB型GM2神经节苷脂沉积症(GM2-GLS)的基因型和表型特点。方法报告广西壮族自治区人民医院儿科于2022年3月诊治的1例经Trio全外显子检测明确诊断的4岁起病的AB型GM2-GLS患儿,分析其临床资料及基因检测结果;检索PubMed文献数据库1991-2022年相关文献并进行文献复习。结果Trio全外显子测序结合Sanger验证结果显示,该患儿GM2A基因携带2个复合杂合突变:c.158_159delTG和c.496G>A,分别引起p.L53Rfs3移码变异和p.G166R错义变异。检索出相关文献22篇,共报道20例该型病例。ClinVar数据库共收录11种GM2A基因突变类型。结论AB型GM2-GLS是一种罕见的常染色体隐性遗传性溶酶体贮积症,其基因检测有助于明确诊断。

关键词：神经节苷脂沉积症 GM2A基因 GM2激活蛋白

改进YOLOv7的城市小型无人机目标检测方法

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计算机工程与应用 2024年第10期60卷 237-245页

作者：崔勇强李嘉轩侯林果梅涛白迪陈少平中南民族大学电子信息工程学院武汉430074

针对“低小动”无人机的反制技术已成为低空空域安全防御的重要手段,然而实时检测与准确识别是实施有效反制的前提条件与关键基础。针对城市低空环境下,目标检测算法对不同背景下小尺度无人机目标检测精度低,容易出现漏检误检且易受外... 详细信息

针对“低小动”无人机的反制技术已成为低空空域安全防御的重要手段,然而实时检测与准确识别是实施有效反制的前提条件与关键基础。针对城市低空环境下,目标检测算法对不同背景下小尺度无人机目标检测精度低,容易出现漏检误检且易受外界因素干扰等问题,提出了一种基于改进YOLOv7的“低小动”无人机目标检测方法。首先采集大量不同环境、不同背景下的无人机样本构建数据集,并采用ViBe(visual background extractor)算法进行预处理;其次引入坐标注意力机制与SPDConv(space-to-depth convolution)模块改进和优化YOLOv7的网络结构;最后提出融合ViBe和改进YOLOv7的二级检测架构,将改进后的YOLOv7作为网络模型检测经ViBe处理后的图像。依据原图与处理图像的位置大小关系,将检测出的目标坐标映射回归至原图片,从而完成目标检测提取。实验结果表明,所提目标检测方法检测精度达96.5%,较原YOLOv7方法提高了15.8个百分点,显著提升了“低小动”目标的检测精度,能够满足低空无人机的实时精准检测的需求。

关键词： ViBe算法反无人机 YOLOv7 坐标注意力机制小目标检测 SPDConv

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城市低空小型无人机目标实时高精度检测算法

计算机工程与应用 2024年第16期60卷 198-205页

作者：崔勇强黄谦高雪梅涛白迪王晓磊中南民族大学电子信息工程学院武汉430074 中南民族大学智能无线通信湖北省重点实验室武汉430074

面向城市低空小型无人机(unmanned aerial vehicle,UAV)乱飞引发的公共安全隐患,针对目前存在的动小目标检测精度低、实时性差等问题,提出了一种基于改进YOLOv7的目标检测模型。该模型在主干网络中引入RepVGG轻量化网络,降低计算复杂度... 详细信息

面向城市低空小型无人机(unmanned aerial vehicle,UAV)乱飞引发的公共安全隐患,针对目前存在的动小目标检测精度低、实时性差等问题,提出了一种基于改进YOLOv7的目标检测模型。该模型在主干网络中引入RepVGG轻量化网络,降低计算复杂度以满足实时性要求;提出C3m模块以解决无人机小目标在图像中占比小、特征信息有限等问题,从而改善检测精度;在此基础上,将CBAM卷积注意力机制插入到主干网络和特征融合网络之间,提高网络对多尺度无人机目标的敏感度,降低噪声影响。在自构建的城市低空无人机数据集上进行消融实验,结果表明改进后的YOLOv7模型与原始YOLOv7模型相比,参数量减少了6×10^(6),浮点运算量降低了77.9%,检测精度mAP@0.5提高至95.1%,检测速度FPS提高了43.7%,实现了对复杂场景下小型无人机目标的实时高精度检测。

关键词： YOLOv7 无人机检测轻量化网络注意力机制

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知识增强的BERT短文本分类算法

计算机工程与设计 2024年第7期45卷 2027-2033页

作者：傅薛林金红郑玮浩张奕陶小梅桂林理工大学信息科学与工程学院广西桂林541004 桂林理工大学广西嵌入式技术与智能系统重点实验室广西桂林541004 广西师范大学计算机科学与工程学院/软件学院广西桂林541004

为解决短文本信息不全且缺乏领域知识导致关键信息难以充分挖掘而造成的深度学习模型分类性能不足等问题,提出一种知识增强的双向编码器表示转换器(BERT)短文本分类算法(KE-BERT)。提出一种建模短文本与领域知识的方法,通过知识图谱进... 详细信息

为解决短文本信息不全且缺乏领域知识导致关键信息难以充分挖掘而造成的深度学习模型分类性能不足等问题,提出一种知识增强的双向编码器表示转换器(BERT)短文本分类算法(KE-BERT)。提出一种建模短文本与领域知识的方法,通过知识图谱进行领域知识的引入;提出一种知识适配器,通过知识适配器在BERT的各个编码层之间进行知识增强。通过在公开的短文本数据集上,将KE-BERT与其它深度学习模型相比较,该模型的F1均值和准确率均值达到93.46%和91.26%,结果表明了所提模型性能表现良好。

关键词：短文本分类深度学习双向编码器表示转换器知识图谱领域知识知识适配器知识增强

A Wheeled Wall-Climbing Robot with Bio-Inspired Spine Mechanisms

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Journal of Bionic Engineering 2015年第1期12卷 17-28页

作者： Yanwei Liu Shaoming Sun Xuan Wu tao mei Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China Institute of Advanced Manufacturing and Technology Hefei Institute of Physical Science Chinese Academy of Sciences Changzhou 213164 China

This paper presents a wheeled wall-climbing robot with the ability to climb concrete, brick walls using circular arrays of miniature spines located around the wheel. The robot consists of two driving wheels and a flexible tail, just like letter “T”, so it is called Tbot. The simple and effective structure of Tbot enables it to be steerable and to transition from horizontal to vertical surfaces rapidly and stably. Inspired by the structure and mechanics of the tarsal chain in the Serica orientalis Motschulsky, a compliant spine mechanism was developed. With the bio-inspired compliant spine mechanism, the climbing performance of Tbot was improved. It could climb on 100° （10° past vertical） brick walls at a speed of 10 cm·s^-1. A mechanical model is also presented to analyze the forces acting on spine during a climbing cycle as well as load share between multi-spines. The simu- lation and experiment results show that the mechanical model is suitable and useful in the optimum design of Tbot.

关键词： biologically-inspired robots climbing robots compliant spine mechanisms mechanical model wheeled robots

Energy-efficient Bio-inspired Gait Planning and Control for Biped Robot Based on Human Locomotion Analysis

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Journal of Bionic Engineering 2016年第2期13卷 271-282页

作者： Hongbo Zhu Minzhou Luo tao mei Jianghai Zhao tao Li Fayong Guo Department of Automation School of Information Science and Technology University of Science and Technology of China Hefei 230022 China Institute of Advanced Manufacturing Technology Hefei Institutes of Physical Science Chinese Academy of Sciences Changzhou 213164 China

In this paper an experiment of human locomotion was carried out using a motion capture system to extract the human gait features. The modifiable key gait parameters affecting the dominant performance of biped robot walking were obtained from the extracted human gait features. Based on the modifiable key gait parameters and the Allowable Zero Moment Point （ZMP） Variation Region （AZR）, we proposed an effective Bio-inspired Gait Planning （BGP） and control scheme for biped robot to- wards a given travel distance D. First, we construct an on-line Bio-inspired Gait Synthesis algorithm （BGSN） to generate a complete walking gait motion using the modifiable key gait parameters. Second, a Bio-inspired Gait Parameters Optimization algorithm （BGPO） is established to minimize the energy consumption of all actuators and guarantee biped robot walking with certain walking stability margin. Third, the necessary controllers for biped robot were introduced in briefly. Simulation and experiment results demonstrated the effectiveness of the proposed method, and the gait control system was implemented on DRC-XT humanoid robot.

关键词： motion capture Allowable Zero Moment Point (ZMP) Variation Region (AZR) Bio-inspired Gait Planning (BGP) humanoid robot