检索结果-南通市图书馆

科教融合对创新性公共卫生人才培养影响机制探析

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

现代预防医学 2024年第13期51卷 2491-2496页

作者：孔露诗胡光丽陈朵张锦丹成晓芬李贝南方医科大学卫生管理学院南方医科大学研究生学院

目的探讨科教融合理念认同对创新性公共卫生人才培养的影响，以期提出提升育人成效的有效措施。方法对某医科院校409名全日制公共卫生专业硕士进行问卷调查。使用IBM SPSS22.0进行描述统计和数据分析，探索变量间的关系。结果该医科... 详细信息

目的探讨科教融合理念认同对创新性公共卫生人才培养的影响，以期提出提升育人成效的有效措施。方法对某医科院校409名全日制公共卫生专业硕士进行问卷调查。使用IBM SPSS22.0进行描述统计和数据分析，探索变量间的关系。结果该医科院校公共卫生专业硕士科教融合理念认同度平均得分为（1.808±0.296）分，课堂实践情况平均得分为（2.194±0.327）分，科研参与情况平均得分为（2.458±0.313）分，人才培养综合得分的平均得分为（2.451±0.303）分。中介模型检验表明，理念认同度可直接正向影响人才培养综合得分，直接效应量为0.125(95%CI:0.046～0.205)；课堂实践情况在理念认同度与人才培养综合得分之间起部分中介作用，中介效应量为0.153(95%CI:0.006～0.160)，且理论认同度-课堂实践情况-科研参与情况-人才培养综合得分的链式中介作用也显著，中介效应量为0.075(95%CI:0.099～0.232)。结论学生对科教融合理论的认同不仅可以正向影响人才培养，还可以通过课堂实践的中介作用及课堂实践和科研参与的链式中介作用间接影响人才培养。

关键词：公共卫生人才培养科教融合创新性人才影响机制

Total ionizing dose effect modeling method for CMOS digital-integrated circuit

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第2期35卷 32-46页

作者： Bo Liang jin-Hui Liu Xiao-Peng zhang Gang Liu Wen-dan Tan Xin-dan zhang School of Computer Science and Technology Xidian UniversityXi’an 710071China

Simulating the total ionizing dose(TID)of an electrical system using transistor-level models can be difficult and expensive,particularly for digital-integrated circuits(ICs).In this study,a method for modeling TID effects in complementary metaloxide semiconductor(CMOS)digital ICs based on the input/output buffer information specification(IBIS)was *** digital IC was first divided into three parts based on its internal structure:the input buffer,output buffer,and functional *** of these three parts was separately *** the IBIS model,the transistor V-I characteristic curves of the buffers were processed,and the physical parameters were extracted and modeled using *** the functional area,logic functions were modeled in VHDL according to the data sheet.A golden digital IC model was developed by combining the input buffer,output buffer,and functional area ***,the golden ratio was reconstructed based on TID experimental data,enabling the assessment of TID effects on the threshold voltage,carrier mobility,and time series of the digital *** experiments were conducted using a CMOS non-inverting multiplexer,NC7SZ157,and the results were compared with the simulation results,which showed that the relative errors were less than 2%at each dose *** confirms the practicality and accuracy of the proposed modeling *** TID effect model for digital ICs developed using this modeling technique includes both the logical function of the IC and changes in electrical properties and functional degradation impacted by TID,which has potential applications in the design of radiation-hardening tolerance in digital ICs.

关键词： CMOS digital-integrated circuit Total ionizing dose IBIS model Behavior-physical hybrid model Physical parameters

Effect of Low-Temperature Thermal Oxidation on the Capillary Performance of Sintered Copper Powder Wicks

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2024年第1期33卷 29-40页

作者： ZHU Minghan FANG Runquan HU Yanxin zhang Jiangyun SHAO dan HUANG jin School of Material and Energy Guangdong University of TechnologyGuangzhou 510006China School of Electric Power Engineering Guangdong Polytechnic of Water Resources and Electric EngineeringGuangzhou 510006China Research into Artifacts Guangdong Key Laboratory of Battery SafetyGuangzhou Institute of Energy testingGuangzhou 511447China

In this study,a composite powder capillary wick is prepared,manufactured by sintering copper powder and surface treated by low-temperature thermal *** is used to improve the performance of the capillary *** forced flow method and infrared imaging method are used to test the permeability and capillary performance of the *** effects of different oxidation temperatures on the performance of capillary wick are *** experimental results show that the wetting performance of the oxidized samples is significantly *** the increase of oxidation temperature,the permeability *** capillary height and velocity of the thermally oxidized samples are significantly higher than those of the untreated capillary ***,the oxidation temperature needs to be adjusted to obtain the best capillary *** highest capillary performance is found at oxidation temperature of 300℃,with an increase of 46% compared to the untreated *** with other composite wicks show that the sample with an oxidation temperature of 300℃ has competitive capillary performance,making it a favorable alternative to two-phase heat transfer *** study shows that combining low-temperature thermal oxidation technology with powder sintering is a convenient and effective method to improve the capillary performance of powder wicks.

关键词： low-temperature thermal oxidation capillary performance copper powder permeability

产教融合发展模式及其实践——来自深圳职业技术大学的经验

在线全文

学校读者我要写书评

暂无评论

深圳职业技术大学学报 2024年第4期23卷 23-31页

作者：梅雄杰姜嘉伟李文燕张金丹吴秋怡方芳张斌厦门大学教育研究院福建厦门361000

基于7000余份有效问卷数据,对深职大产教融合现状进行实证研究后发现:电信学院、汽车学院与人工智能学院的改革成效显著,特色鲜明,分别形成了“标准引领”“技术共研”和“产业跨界联盟”三种典型的产教融合模式,打造出了产教融合的“... 详细信息

基于7000余份有效问卷数据,对深职大产教融合现状进行实证研究后发现:电信学院、汽车学院与人工智能学院的改革成效显著,特色鲜明,分别形成了“标准引领”“技术共研”和“产业跨界联盟”三种典型的产教融合模式,打造出了产教融合的“深圳经验”、校企“双元”育人新范式以及高水平“双师型”教师队伍等实践成果。然而,深职大产教融合也面临师生满意度有待提升、行动主体价值观偏差、企业参与意愿不强、校企合作“时间错位”、产教融合落实不到位、教师发展支持体系有待完善等问题。对此,未来改革需着眼于专业设置的持续优化、提升师生在产教融合中的体验、实现课程内容与企业岗位需求的紧密对接、强化应用型科研的地位以及深化政校企行协同教育机制等关键领域,以此推动产教融合高质量发展。

关键词：产教融合发展模式深圳职业技术大学 “九位一体” 产业学院

Improvements in properties of NdFeB magnets obtained via magnetron sputtering and thermal diffusion

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第9期42卷 1710-1716,I0003页

作者： jin Tang Weichao Huang dan Li School of Electronic Engineering Guangxi University of Science and TechnologyLiuzhou545006China China Rare Earth(Guangxi)jinyuan Rare Earth New Materials Co. Ltd.Hezhou542603China China Rare Earth Group Co. Ltd.Ganzhou341000China Center of Experimental Teaching for Common Courses Panzhihua UniversityPanzhihua617000China

The grain boundary diffusion process(GBDP) of Dy and DyAl on sintered NdFeB magnets was conducted via magnetron-sputtering deposition of Dy and DyAl films to enhance coercivity(H_(cj)),The magnetic properties,microstructure and anti-corrosion properties of Dy-surface-alloying NdFeB magnets obtained via magnetron sputtering and thermal diffusion were *** H_(cj) of the Dy_(95)Al_(5)-NdFeB magnet increases by 32.68%,while the remanence declines ***,X-ray diffraction and microstructural analysis confirm the formation of Dy-rich shells,the higher-magnetic-anisotropy field of hard(Nd_(x)Dy_(1-x))2(FeAl)_(14)B magnetic phases and an optimised grain boundary structu re,contributing to the H_(cj)enhancement of the *** elemental distribution and diffusion mechanism of the magnets are also ***,the corrosion resistance of the Dy_(95)Al_(5)-NdFeB magnet is substantially improved by enhancing the electrochemical stability and optimising the distribution and morphology of the intergranular *** findings of this study are of substantial importance in the development of low-heavy rare-earth sintered NdFeB magnets.

关键词： Magnetron sputtering NdFeB Rare earths Microstructure Magnetic property Corrosion resistance

Rational design of practical layered transition metal oxide cathode materials for sodium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2024年第7期18卷 121-140页

作者： Yan Wang Ning Ding Rui zhang Guanhua jin dan Sun Yougen Tang Haiyan Wang Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China College of Energy and Chemical Engineering Xinjiang Institute of TechnologyAksu Prefecture 843100China

Sodium-ion batteries (SIBs), which serve as alternatives or supplements to lithium-ion batteries, have been developed rapidly in recent years. Designing advanced high-performance layered NaxTMO_(2) cathode materials is beneficial for accelerating the commercialization of SIBs. Herein, the recent research progress on scalable synthesis methods, challenges on the path to commercialization and practical material design strategies for layered NaxTMO_(2) cathode materials is summarized. Co-precipitation method and solid-phase method are commonly used to synthesize NaxTMO_(2) on mass production and show their own advantages and disadvantages in terms of manufacturing cost, operative difficulty, sample quality and so on. To overcome drawbacks of layered NaxTMO_(2) cathode materials and meet the requirements for practical application, a detailed and deep understanding of development trends of layered NaxTMO_(2) cathode materials is also provided, including high specific energy materials, high-entropy oxides, single crystal materials, wide operation temperature materials and high air stability materials. This work can provide useful guidance in developing practical layered NaxTMO_(2) cathode materials for commercial SIBs.

关键词： sodium-ion batteries layered oxide industrialization development prospect

Construction of MoP/MoS_(2) Core-shell Structure Electrocatalyst for Boosting Hydrogen Evolution Reaction

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

Chemical Research in Chinese Universities 2024年第3期40卷 490-498页

作者： MENG dan RAN Shunjiang GAO Ling zhang Yue SAN Xiaoguang zhang Lei LI Ruixiang jin Quan College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142P.R.China Key Laboratory of Automobile Materials(Ministry of Education) School of Materials Science and EngineeringJilin UniversityChangchun 130022P.R.China

Hydrogen energy stands out as one of the most promising alternative energy sources due to its cleanliness and *** water splitting offers a sustainable pathway for hydrogen ***,the kinetic rate of the hydrogen evolution reaction(HER)is sluggish,emphasizing the critical need for stable and highly active electrocatalysts to facilitate HER and enhance reaction *** metal-based catalysts have garnered attention for their favorable catalytic activity in electrochemical hydrogen evolution in alkaline *** this investigation,flower-like nanorods of MoS_(2) were directly synthesized in situ on a nickel foam substrate,followed by the formation of MoP/MoS_(2)-nickel foam(NF)heterostructures through high-temperature phosphating in a tube furnace *** findings reveal that MoP/MoS_(2)-NF-450 exhibits outstanding electrocatalytic performance in an alkaline milieu,demonstrating a low overpotential(90 mV)and remarkable durability at a current density of 10 mA/cm^(2).Comprehensive analysis indicates that the introduction of phosphorus(P)atoms enhances the synergistic effect with MoS_(2),while the distinctive flower-like nanorod structure of MoS_(2) exposes more active ***,the interface between the MoP/MoS_(2) heterostructure and NF facilitates electron transfer during hydrogen evolution,thereby enhancing electrocatalytic *** design and synthesis of such catalysts offer a valuable approach for the development of high-performance hydrogen evolution electrocatalysts.

关键词： MoP/MoS_(2) Core-shell structure Heterostructure Synergistic effect Hydrogen evolution reaction

Clinical efficacy of laparoscopic cholecystectomy combined with endoscopic papillary balloon dilation in treatment of gallbladder stones with common bile duct stones: A retrospective study

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

World Journal of Gastrointestinal Surgery 2024年第6期16卷 1700-1708页

作者： Hong-dan Liu Qi zhang Wen-Si Xu Shuang jin Department of Gastroenterology The Third Affiliated Hospital of Qiqihar Medical UniversityQiqihar 161000Heilongjiang ProvinceChina

BACKGROUND The incidence of cholelithiasis has been on the rise in recent years,but the choice of procedure is *** To investigate the efficacy of laparoscopic cholecystectomy(LC)combined with endoscopic papillary balloon dilation(EPBD)in patients with gallbladder stones(GS)with common bile duct stones(CBDS).METHODS The clinical data of 102 patients with GS combined with CBDS were selected for retrospective analysis and divided into either an LC+EPBD group(n=50)or an LC+endoscopic sphincterotomy(EST)group(n=52)according to surgical ***-related indexes,postoperative recovery,postoperative complications,and expression levels of inflammatory response indexes were compared between the two *** Total surgical time,stone free rate,rate of conversion to laparotomy,and successful stone extraction rate did not differ significantly between the LC+EPBD group and LC+EST *** hemorrhage,time to ambulation,and length of hospitalization in the LC+EPBD group were lower than those of the LC+EST group(P<0.05).The rate of total complications of the two groups was 9.80%and 17.65%,respectively,and the difference was not statistically *** serious complications occurred in either *** 48 h postoperatively,the expression levels of interleukin-6,tumor necrosis factor-α,high-sensitivity Creactive protein,and procalcitonin were lower in the LC+EPBD group than in the LC+EST group(P<0.05).At 3 d postoperatively,the expression levels of aspartate transaminase,alanine transaminase,and total bilirubin were lower in the LC+EPBD group than in the LC+EST group(P<0.05).CONCLUSION LC combined with EPBD and LC combined with EST are both effective procedures for the treatment of GS with CBDS,in which LC combined with EPBD is beneficial to shorten the patient’s hospitalization time,reduce the magnitude of elevated inflammatory response indexes,and promote postoperative recovery.

关键词： Gallbladder stone Common bile duct stone Endoscopic papillary balloon dilation Laparoscopic cholecystectomy Endoscopic sphincterotomy

Carbazole Based Anionic MOF for Proton Conductivity

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

Chinese Journal of Structural Chemistry 2021年第1期40卷 55-60,2页

作者： GUO Shan-Shan HUANG Lv-Lan YE Ying-Xiang LIU Li-Zhen YAO Zi-Zhu XIANG Sheng-Chang zhang jin-dan zhang zhang-jing College of Chemistry and Materials Science Fujian Provincial Key Laboratory of Polymer MaterialsFujian Normal UniversityFuzhou 350007China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

A non-interpenetrated anionic In-MOF(FJU-302)based on a linear H2 bpdc and an angled H2 cdc as dual-ligands was characterized by FT-IR,TGA and X-ray single-crystal/powder ***-302 crystallizes in the monoclinic system and I4_(1)/amd space group with a=27.1274(8),b=27.1274(8),c=29.788(3)Å,V=21921(2)Å^(3),Z=16,M_(r)=608.32,D_(c)=0.737 g/cm^(3),F(000)=4848,μ(Cu Kα)=3.659 mm^(–1),R=0.0800 and wR=0.1911 for 5703 observed reflections(I>2s(I)),and R=0.1470 and w R=0.2342 for all *** this work,a carbazole based anionic In-MOF(FJU-302)was designed and synthesized,and the proton conductivity from subzero temperature(–30℃)to 70℃ was measured without additional ***-302 presents a max proton conductivity of 6.47×10^(–4) S·cm^(–1) at 70℃,and it can maintain 5.88×10^(–7) S·cm^(–1) at–30℃.This work reports a first carbazole based MOF for proton conductivity at subzero temperature conditions.

关键词： metal-organic frameworks carbazole proton conductivity