检索结果-南通市图书馆

Medical titanium surface-modified coatings with antibacterial and anti-adhesive properties for the prevention of implant-associated infections

引用

Journal of Materials Science & Technology 2024年第12期179卷 208-223页

作者： Dongliang Huo fengqian wang Fengjuan Yang Tongyao Lin Qing Zhong Sui-Ping Deng Jingxian Zhang Shaozao Tan Langhuan Huang Guangdong Engineering&Technology Research Centre of Graphene-like Materials and Products Department of ChemistryCollege of Chemistry and Materials ScienceJinan UniversityGuangzhou 510632China

Implant-associated infections(IAIs)caused by drug-resistant bacteria remain a critical factor in the fail-ure of implant ***,it is urgent to develop an effective anti-infection coating for im-plant surface modification to prevent ***,an antibacterial and anti-adhesive coating(CMP-Ti)constructed on the surface of titanium implants is reported,formed by the nanomaterial CeO_(2)@Mn_(3)O_(4) NRs(CM NRs)with antibacterial activity and the superhydrophilic polymer polyethylene glycol(PEG).The nanocatalyst CM NRs on the surface of CMP-Ti induce ferroptosis-like death of bacteria by catalyzing the production of hydroxyl radical(·OH)and singlet oxygen(^(1)O_(2))and the consumption of glutathione(GSH).The superhydrophilic coating of CMP-Ti can effectively prevent adherence of drug-resistant bac-teria and avoid biofilm *** combining the"active offense"antibacterial mechanism with the"passive defense"anti-adhesion mechanism,CMP-Ti can kill bacteria and inhibit biofilm *** results of in vivo studies showed that CMP-Ti effectively prevented implant-associated infections caused by Methicillin-resistant Staphylococcus aureus(MRSA),thus promoting tissue repair and ***,this multifunctional coating combining"active offense"and"passive defense"provides a promising way to prevent IAIs caused by drug-resistant bacteria and to promote tissue repair in the future.

关键词： Medical titanium Antibacterial coatings Drug-resistant bacteria Biofilm inhibition Ferroptosis-like death

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

山西省提高农田灌溉水有效利用系数分析探讨

引用

山西水利 2022年第1期38卷 28-29,37页

作者：王锋前山西汾河灌溉管理有限公司山西祁县030900

农田灌溉水有效利用系数,是衡量灌区引水、输水、配水以及灌水等环节的灌溉水利用程度的重要指标,是实施最严格水资源管理制度“三条红线”考核具体指数。文章阐述了山西省灌溉工程建设情况、农田灌溉的现状,分析了影响全省农田灌溉水... 详细信息

农田灌溉水有效利用系数,是衡量灌区引水、输水、配水以及灌水等环节的灌溉水利用程度的重要指标,是实施最严格水资源管理制度“三条红线”考核具体指数。文章阐述了山西省灌溉工程建设情况、农田灌溉的现状,分析了影响全省农田灌溉水有效利用系数的主要因素,以及山西省不同类型灌区具体情况,探讨了提高农田灌溉水有效利用系数的管理和技术措施。

关键词：农田灌溉灌溉水利用系数影响因素技术措施管理措施山西省

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

山西社会资本参与高效节水灌溉项目建设运营管理情况剖析

引用

山西水利 2022年第7期38卷 60-61,64页

作者：王锋前山西汾河灌溉管理有限公司山西祁县030900

社会资本参与高效节水灌溉管理,有利于建立健全水利投入资金多渠道筹措机制,提高灌溉管理效率和服务水平。文章总结了山西社会资本参与高效节水灌溉的典型做法及经验,对实践中存在引入社会资本实践探索力度不够,社会资本参与意愿不强,... 详细信息

社会资本参与高效节水灌溉管理,有利于建立健全水利投入资金多渠道筹措机制,提高灌溉管理效率和服务水平。文章总结了山西社会资本参与高效节水灌溉的典型做法及经验,对实践中存在引入社会资本实践探索力度不够,社会资本参与意愿不强,部门间统筹协调不够等问题进行了分析,并从加大政策配套与机制创新力度,夯实引入社会资本参与农田水利基础设施网络,抓好试点示范成果转化,加强服务指导与考核等方面提出了相关建议。

关键词：社会资本高效节水灌溉工程建设运营山西

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CaC_(2)O_(4)-直接枣红B/壳聚糖复合材料的制备及对乙基紫的吸附性能

引用

复合材料学报 2022年第2期39卷 736-745页

作者：赵丹华张少丽陈作义柳晓俊王柯王峰倩雷月清广东第二师范学院化学系广州510303

以壳聚糖(CTS)和草酸钙-直接枣红B(CaC_(2)O_(4)-DB)杂化材料为原料,采用共混原位固载法制备草酸钙-直接枣红B/壳聚糖(CaC_(2)O_(4)-DB/CTS)复合材料。利用SEM、BET和FTIR对CTS和CaC_(2)O_(4)-DB/CTS的形貌及结构等进行表征分析,CaC_(2)O_(4)-DB的固载并未改变CTS的形貌结构,仅增加其比表面积和结合位点。详细考察了吸附时间、乙基紫(Ethyl violet,EV)初始浓度、溶液pH及温度等因素对CaC_(2)O_(4)-DB/CTS吸附EV的影响,初步探讨了CaC_(2)O_(4)-DB/CTS对EV的吸附动力学和吸附热力学行为。结果表明,CaC_(2)O_(4)-DB/CTS吸附EV在3 h内达到吸附平衡,且pH=8、投加量为6 g/L时,25℃的100 mg/L EV溶液(化学需氧量(COD)为187 mg/L)染料去除率高达95%,COD去除率达90%以上。该吸附过程是自发进行的,符合Langmuir等温线模型和准二级动力学模型,其吸附过程由颗粒内扩散和化学吸附共同控制。

关键词：壳聚糖复合材料吸附动力学热力学乙基紫

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

3G底层核心实时状态检测模块的设计

引用

电信工程技术与标准化 2007年第9期20卷 46-50页

作者：王奉乾李大学重庆邮电大学计算机科学与技术学院重庆400065

本文首先提出了3G底层技术统一平台的概念,介绍了本平台及系统控制子系统的框架结构;然后给出了实时状态检测模块的功能和结构设计,包括其在整个系统中的位置、和其它功能模块的联系等;进而重点分析了该模块各个进程和任务的处理流程,... 详细信息

本文首先提出了3G底层技术统一平台的概念,介绍了本平台及系统控制子系统的框架结构;然后给出了实时状态检测模块的功能和结构设计,包括其在整个系统中的位置、和其它功能模块的联系等;进而重点分析了该模块各个进程和任务的处理流程,并对它们是如何分工合作、实现对整个底层工作状态的实时性检测和控制等技术做了详细说明。

关键词： 3G统一平台系统控制子系统检测模块

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

脉搏血氧饱和度监测在预测中重度儿童阻塞性睡眠呼吸暂停中的应用价值

引用

中华实用儿科临床杂志 2023年第12期38卷 910-913页

作者：吕梦王宇清徐雪云何燕玉江雨婷王志辉张桢王丰倩王书琪熊妮娜苏州大学附属儿童医院呼吸科苏州215000

目的探讨脉搏血氧饱和度(SpO_(2))监测在预测儿童中重度阻塞性睡眠呼吸暂停(OSA)中的价值。方法回顾性研究。选取2017年6月至2020年11月以夜间睡眠打鼾至苏州大学附属儿童医院就诊的341例儿童,均接受同步多导睡眠监测(PSG)和SpO_(2)监测... 详细信息

目的探讨脉搏血氧饱和度(SpO_(2))监测在预测儿童中重度阻塞性睡眠呼吸暂停(OSA)中的价值。方法回顾性研究。选取2017年6月至2020年11月以夜间睡眠打鼾至苏州大学附属儿童医院就诊的341例儿童,均接受同步多导睡眠监测(PSG)和SpO_(2)监测。SpO_(2)参数:SpO_(2)减低指数(ODI),包括下降幅度≥3%、≥4%的ODI3、ODI4;平均SpO_(2)(MSpO_(2));最低SpO_(2)(LSpO_(2));血氧饱和度低于95%、92%、90%累积时间(T95、T92、T90)。根据阻塞性呼吸暂停低通气指数(OAHI)将患儿分为打鼾及轻度OSA组(OAHI≤5次/h)与中重度OSA组(OAHI>5次/h),采用χ^(2)检验及Mann-Whitney U检验比较2组间SpO_(2)参数的差异,采用Spearman相关分析对全部患儿SpO_(2)参数与OAHI进行相关性分析,将SpO_(2)参数纳入Logistic回归分析。采用受试者工作特征曲线(ROC)分析SpO_(2)参数对中重度OSA的预测价值。结果341例患儿中男206例,女135例;年龄6.0(4.0,7.5)岁;体重指数(BMI)16.2(15.1,18.0)kg/m^(2);OAHI 0.6(0.1,3.0)次/h。打鼾及轻度OSA组283例(83.0%),中重度OSA组58例(17.0%)。打鼾及轻度OSA组及中重度OSA组ODI3分别为0.7(0.3,1.4)次/h、7.7(4.4,12.8)次/h,ODI4分别为0.4(0.1,0.8)次/h、5.3(2.7,9.1)次/h,T95分别为1.4(0.3,5.3)min、13.7(7.0,33.5)min,T92分别为0.1(0,0.5)min、1.8(0.9,6.0)min,T90分别为0(0,0.1)min、0.6(0.2,2.2)min,LSpO_(2)分别为91.0(89.0,93.0)%、86.5(82.0,88.0)%,MSpO 2分别为97.0(97.0,98.0)%、96.0(96.0,97.0)%。打鼾及轻度OSA组中ODI3、ODI4、T95、T92、T90均低于中重度OSA组,LSpO 2、MSpO_(2)均高于中重度OSA组(均P<0.001)。各项SpO_(2)参数均与OAHI相关(均P<0.001),其中ODI3与OAHI相关系数为0.660。ODI3是中重度OSA的独立预测因子(OR=3.117,95%CI:1.635~5.945,P=0.001),其预测中重度OSA的ROC曲线下面积为0.957,临界值为3.45次/h,且诊断中重度OSA的特异度为95.4%,MSpO_(2)是中重度OSA的独立预测因子(OR=2.917,95%CI:1.589~5.354,P=0.001)。结论ODI3可以用来预测中重度儿童OSA。

关键词：脉搏血氧饱和度阻塞性睡眠呼吸暂停,中重度儿童

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An Iterated Greedy Algorithm with Memory and Learning Mechanisms for the Distributed Permutation Flow Shop Scheduling Problem

引用

Computers, Materials & Continua 2025年第1期82卷 371-388页

作者： Binhui wang Hongfeng wang College of Information Science and Engineering Northeastern UniversityShenyang110819China

The distributed permutation flow shop scheduling problem(DPFSP)has received increasing attention in recent *** iterated greedy algorithm(IGA)serves as a powerful optimizer for addressing such a problem because of its straightforward,single-solution evolution ***,a potential draw-back of IGA is the lack of utilization of historical information,which could lead to an imbalance between exploration and exploitation,especially in large-scale *** a consequence,this paper develops an IGA with memory and learning mechanisms(MLIGA)to efficiently solve the DPFSP targeted at the ***,we incorporate a memory mechanism to make a more informed selection of the initial solution at each stage of the search,by extending,reconstructing,and reinforcing the information from previous *** addition,we design a twolayer cooperative reinforcement learning approach to intelligently determine the key parameters of IGA and the operations of the memory ***,to ensure that the experience generated by each perturbation operator is fully learned and to reduce the prior parameters of MLIGA,a probability curve-based acceptance criterion is proposed by combining a cube root function with custom *** last,a discrete adaptive learning rate is employed to enhance the stability of the memory and *** ablation experiments are utilized to verify the effectiveness of the memory mechanism,and the results show that this mechanism is capable of improving the performance of IGA to a large ***,through comparative experiments involving MLIGA and five state-of-the-art algorithms on 720 benchmarks,we have discovered that MLI-GA demonstrates significant potential for solving large-scale *** indicates that MLIGA is well-suited for real-world distributed flow shop scheduling.

关键词： Distributed permutation flow shop scheduling makespan iterated greedy algorithm memory mechanism cooperative reinforcement learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Quickly obtaining densely dispersed coherent particles in steel matrix and its related mechanical property

引用

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao wang Qingsong Huang School of Chemical Engineering Sichuan UniversityChengdu 610065China

Densely distributed coherent nanoparticles(DCN)in steel matrix can enhance the work-hardening ability and ductility of steel *** the routes to this end can be generally classified into the liquid-solid route and the solid-solid ***,the formation of DCN structures in steel requires long processes and complex *** far,obtaining steel with coherent particle enhancement in a short time remains a bottleneck,and some necessary steps remain ***,we show a high-efficiency liquid-phase refining process reinforced by a dynamic magnetic ***-Y-Mn-O particles had an average size of around(3.53±1.21)nm and can be obtained in just around 180 *** small nanoparticles were coherent with the matrix,implying no accumulated dislocations between the particles and the steel *** findings have a potential application for improving material machining capacity,creep resistance,and radiation resistance.

关键词： ferritic steels coherent particles microstructure compression test work hardening

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Constraints on holographic QCD phase transitions from PTA observations

引用

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He Li Li Sai wang Shao-Jiang wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Efficient and Stable Photoassisted Lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

引用

Nano-Micro Letters 2025年第3期17卷 440-454页

作者： Zelin Ma Shiyao wang Zhuangzhuang Ma Juan Li Luomeng Zhao Zhihuan Li Shiyuan wang Yazhou Shuang Jiulong wang Fang wang Weiwei Xia Jie Jian Yibo He Junjie wang Pengfei Guo Hongqiang wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing School of Materials Science and Engineering DepartmentNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063People’s Republic of China Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi’an 710119People’s Republic of China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PLIBs),while there is always a request on fast carrier transport in electrochemical active *** work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic *** employed in PLIBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging ***,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky *** from these merits,several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set,including the capacity of 276 mAh g^(−1)at 0.2 A g^(−1)under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 *** results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：