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医学生医事法律意识培养研究

闽西职业技术学院学报 2024年第2期26卷 97-100页

作者：徐光辉江灵芝福建卫生职业技术学院附属福建省级机关医院福州350003

为了解医学生对医事法律的认知情况,对医学生进行问卷调查及数据分析,从而为医学院校设置医事法律课程提供依据。调查中发现医学生医事法律意识薄弱、医事法律知识缺乏,以及医学生医事法律意识培养存在教育主体不重视、教学内容缺乏体... 详细信息

为了解医学生对医事法律的认知情况,对医学生进行问卷调查及数据分析,从而为医学院校设置医事法律课程提供依据。调查中发现医学生医事法律意识薄弱、医事法律知识缺乏,以及医学生医事法律意识培养存在教育主体不重视、教学内容缺乏体系、教学模式单一等问题。为此,医学院校需加强医事法律意识培养,以提高医学生的法律素养。

关键词：法律意识医事法律医学生

Predictive model-aided filtering scheme of data-collection in WSN

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The Journal of China Universities of Posts and Telecommunications 2011年第2期18卷 17-24页

作者： HUANG RU ZHANG Zai-chen xu guang-hui School of Information Science and Engineering East China University of Science and Technology Shanghai 200237 China State Key Laboratory of Mobile Communications Southeast University Nanjing 210096 China Institute of Communications Engineering PLA University of Science and Technology Nanjing 210007 China

The paper proposes a prediction-mode-based filtering mechanism（PMF） to solve the problems of transmission energy wasting caused by time-redundant data in wireless sensor networks（WSN）,according to the characteristic of spatio-temporal correlations on sampling series in *** works have suggested several approaches to decrease energy cost during data transmission process via data aggregation tree *** from those methods in above researches,our proposed scheme mainly focus on reducing the temporal redundant degree in event-source to achieve energy-saving effect via self-adaptive filtering *** framework of PMF for energy-efficient collection is composed of prediction module for mining the change law of time domain,self-learning module for updating model,and driving module for controlling data filtering *** with the design of error driving rule and threshold distributing rule,which is the middleware in the above filtering mechanism,the quantity of transmission load in networks can be greatly inhibited on the premise of quality of service（QoS） assurance and energy consumption can be reduced ***,the experimental results show that the performance of PMF can significantly outperform some classical data-collection algorithms on energy-saving effect and self-adaptability.

关键词： WSN data-collection filtering mechanism energy-saving

Hand-assisted laparoscopic surgery of abdominal large visceral organs

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World Journal of Gastroenterology 2006年第29期12卷 4736-4740页

作者： Li-Hua Dai Bo xu guang-hui Zhu Department of Surgery The First Hospital of Guangzhou Guangzhou 510180 Guangdong Province China

AIM： To design a hand-assisted laparoscopic approach in an attempt to provide an option for laparoscopic resection of abdominal large viscera. METHODS： A 5-6 cm incision （for HandPort） and 2 trocars were employed. The main vessel of the target organ was taken as a ＂core＂, and all tissues around the core were taken as peripheral structures. The peripheral structures were dissected first, and the core vessels were treated last. Twenty-six patients underwent laparoscopic deroofing of the hepatic huge cysts, resection of the segments lying at the outer edge of the liver （segments 2 to 6）, splenectomy, hemicolectomy, ileocecectomy and subtotal gastrectomy with HandPort device, harmonic scalpel, or Ligasure. RESULTS： The duration of the procedure was within 2 hours. Blood loss amounted to 8-120 mL. The conversion rate was 3.8% （1/26）. All patients had uneventful postoperative courses with less pain, earlier oral intake, and faster recovery, compared with conventional surgery. CONCLUSION： This method combines the advantages of both open and laparoscopic techniques, achieving better hemostasis effect, shortening the operative time, and is beneficial to the patients.

关键词： Minimally invasive surgery, Hand-assistedlaparoscopic surgery Hepatic segmentectomy,Hemicolectomy Subtotal gastrectomy

骨科机器人辅助置钉下全内镜化经椎间孔腰椎椎间融合术治疗腰椎间盘突出症伴腰椎不稳

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中国骨伤 2024年第8期37卷 750-755页

作者：张凯范喜荣赵常春许广慧薛文甘肃中医药大学第一临床医学院甘肃兰州730000 甘肃省人民医院脊柱外科甘肃兰州730000

目的:探讨骨科机器人辅助置钉下全内镜化经椎间孔腰椎椎间融合术(transforaminal lumbar interbody fusion,TLIF)治疗腰椎间盘突出症伴腰椎不稳的安全性和有效性。方法:2021年10月至2023年3月收治26例单节段腰椎间盘突出症伴腰椎不稳患... 详细信息

目的:探讨骨科机器人辅助置钉下全内镜化经椎间孔腰椎椎间融合术(transforaminal lumbar interbody fusion,TLIF)治疗腰椎间盘突出症伴腰椎不稳的安全性和有效性。方法:2021年10月至2023年3月收治26例单节段腰椎间盘突出症伴腰椎不稳患者,男14例,女12例,年龄47~73(58.5±8.1)岁,病程2~12(6.6±2.8)个月,手术节段L4,516例,L5S110例。采用骨科机器人辅助置钉下全内镜化TLIF治疗。观察记录手术时间、术中出血量、切口长度、术后引流量、术后下床活动时间、术后住院时间。观察比较术前、术后的椎间隙高度及腰椎前凸角。采用视觉模拟评分(visual analog scale,VAS)评价疼痛程度,Oswestry功能障碍指数(Oswestry disability index,ODI)评价临床疗效,Brantigan-Steffee标准评估椎间融合情况。结果:26例患者均顺利完成手术,手术时间105~109(150.8±24.1) min,术中失血量35~88(55.5±16.4) ml,切口长度1.4~3.5 (2.3±0.8) cm,术后引流量15~40(28.5±7.8) ml,术后下床活动时间15~30(22.8±4.5) h,术后住院时间3~7(4.2±1.3) d。26例患者术后获得随访,时间12~16(14.0±1.3)个月。VAS和ODI术后1周[2.96±0.72)分、(41.63±4.79)%]、术后12个月[1.27±0.60)分、(13.11±2.45)%]较术前[6.69±0.93)分、(59.12±5.92)%]改善(P<0.01);术后12个月椎间隙高度(11.95±1.47) mm和腰椎前凸角(57.46±7.59)°较术前[(6.67±1.20) mm、(44.08±7.79)。]改善(P<0.01)。术后12个月所有患者无椎弓根螺钉断裂及融合器的移位,椎间均成功融合。根据Brantigan-Steffee分级:D级17例,E级9例。结论:骨科机器人辅助置钉下全内镜化TLIF对于腰椎间盘突出症伴腰椎不稳患者,提高了手术的精准度和安全性,早期随访临床效果确切。

关键词：内窥镜微创脊柱外科经椎间孔腰椎椎间融合术骨科机器人腰椎间盘突出症

Electromagnetic fields in ultra-peripheral relativistic heavy-ion collisions

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Nuclear Science and Techniques 2024年第2期35卷 103-109页

作者： Jie Zhao Jin-hui Chen xu-guang Huang Yu-Gang Ma Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for Theoretical Nuclear Physics NSFC and Fudan UniversityShanghai 200438China Physics Department and Center for Particle Physics and Field Theory Fudan UniversityShanghai 200438China

Ultra-peripheral heavy-ion collisions(UPCs)offer unique opportunities to study processes under strong electromagnetic *** these collisions,highly charged fast-moving ions carry strong electromagnetic fields that can be effectively treated as photon *** exchange of photons can induce photonuclear and two-photon interactions and excite *** excitation of the ions results in Coulomb dissociation with the emission of photons,neutrons,and other ***,the electromagnetic fields generated by the ions can be sufficiently strong to enforce mutual interactions between the two colliding ***,the two colliding ions experience an electromagnetic force that pushes them in opposite directions,causing a back-to-back correlation in the emitted *** a Monte Carlo simulation,we qualitatively demonstrate that the above electromagnetic effect is large enough to be observed in UPCs,which would provide a clear means to study strong electromagnetic fields and their effects.

关键词： Electromagnetic fields Neutrons Ultra-peripheral relativistic heavy-ion collisions(UPC)

Atomic-scale mechanism of effect of co-separation of elements at interface of ferrite and austenite on Cr-depleted zone of duplex stainless steel

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Journal of Iron and Steel Research International 2024年第3期31卷 710-718页

作者： Yan-hui Hou Ze-kun xu Shi-long Zhou guang-qiang Li The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Three-dimensional atom-probe tomography and first-principles calculation combined with density functional theory were used to study the effect of the co-segregation of different elements formed during the solidification process of S32205 duplex stainless steel on the Cr-depleted zone at the interface between ferrite and *** was found that the co-segregation of different elements formed during the solidification process of duplex stainless steel can also form Cr-depleted zone at the interface between ferrite and ***,Mo,Si,B,C and P atoms promote co-segregation with Cr atoms,which promotes the formation of Cr-depleted zone at the interface between ferrite and austenite in duplex stainless *** and Si strongly promote the segregation of Cr at the interface between ferrite and austenite,thereby promoting the formation of Cr-depleted zone.B,C and P elements also promote the segregation of Cr element at the interface between ferrite and austenite and the formation of Cr-depleted zone,but their effect is weaker than that of Mo and Si *** conclusions provide a new theoretical basis for improving the intergranular corrosion performance of duplex stainless steel.

关键词： Duplex stainless steel Cr-depleted zone Intergranular corrosion Co-segregation First-principles calculation

Super-high bed sintering for iron ores:behaviors,causes and solutions of horizontal segregation on strand

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Journal of Iron and Steel Research International 2024年第7期31卷 1590-1596页

作者： Liang-ping xu hui-bo Liu Zhong-lin Dong Qiang Zhong Yu-chao Zhao guang-hui Li School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

Horizontal segregation has been a constraint to the development and application of super-high bed *** eliminate the horizontal segregation of super-high bed sintering,several typical sintering machines were sampled and analyzed,and theoretical calculation was made to compare the bed depth and their differences in different areas within the mixture ***,solutions were proposed and applied to a 265 m^(2) sintering *** results showed that the horizontal seg-regation of the 265 m^(2) sintering machine was dominated by particles larger than 8 mm with horizontal segregation degree of 0.48,while 360 and 550 m^(2) sintering machines were affected by 5-8 mm and 1-3 mm particles with horizontal segregation degree of 0.27 and 0.31,*** analysis indicated the different segregation distribution results from the matching of the bed depth of each area within the mixture ***,the horizontal segregation degree not larger than 0.06 was achieved by optimizing the time parameters and the division of three zones on the 265 m^(2) sintering machine.

关键词： Super-high bed sintering Horizontal segregation Feeder Particle distribution Agglomeration

Enhancing reversible hydrogen storage performance of 2LiBH_(4)–MgH_(2)via in-situ building heterogeneous nucleation sites

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Rare Metals 2024年第9期43卷 4367-4376页

作者： Wei Chen Ya-hui Sun Tian xu xue-Bin Yu guang-Lin Xia Department of Materials Science Fudan UniversityShanghai 200433China

2LiBH_(4)-MgH_(2)composite is one of the most attractive reactive hydride composites with a theoretic hydrogen capacity of 10.8 wt%.However,the large nucleation restriction of MgB_(2)during the second step of dehydrogenation results in sluggish hydrogen storage kinetics and high operating temperature,which hinders its practical application as on-board hydrogen storage ***,Al3Ti doped Al nanoparticles(AT NPs)are prepared by a facile chemical reduction reaction to improve the hydrogen storage performance of 2LiBH_(4)-MgH_(2)*** the initial H_(2)desorption process,MgAlB_(4)and TiB_(2)that have identical crystal structure and low d-value mismatch with MgB_(2)resulting from the reaction between AT NPs and 2LiBH_(4)-MgH_(2)composite serve as effective nucleation sites for the formation of MgB_(2).As a result,the apparent activation energy of the two-step H_(2)desorption of AT NPs doped 2LiBH_(4)-MgH_(2)composite are notably decreased to(110.0±5.9)and(119.6±1.4)kJ·mol^(-1),which is 55.5 and 33.5 kJ·mol^(-1)lower than that of the undoped *** importantly,a reversible hydrogen storage capacity of 9.2 wt%after 10cycles of H_(2)desorption and adsorption could be achieved,corresponding to a capacity retention rate of 99%.The building of reactive bimetallic catalyst towards in situ formation of heterogeneous nucleation sites provides a new strategy for improving the hydrogen storage performance of reactive hydride composites.

关键词： Reversible hydrogen storage Reactive hydride composites Catalytic effects Heterogeneous nucleation

Super-high bed sintering for iron ores: inhomogeneous phenomena and its mechanism during mineralizing

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Journal of Iron and Steel Research International 2024年第8期31卷 1850-1860页

作者： hui-bo Liu Liang-ping xu Xi-duan Yang Zhong-lin Dong Qiang Zhong guang-hui Li School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

The inhomogeneous sinter properties in super-high bed sintering have been reported in our previous *** inves-tigate the reasons for the inhomogeneous phenomena,detailed sampling and analysis of mixed material bed and sintered bed in super-high bed sintering plant were *** results indicated that the higher porosity and thinner dendrite of silico-ferrite of calcium and aluminum in the upper layer as well as dense structure and higher secondary hematite content in the lower layer led to the heterogeneities of mechanical strength and reduction properties exceeding 20%and 10%,*** the bed top downward,the basicity of mixed material decreased from 2.13 to 1.68 because the average particle size increased from 2.65 to 4.56 *** and fuels gathered in finer particles(-3 mm)of mixed material,and the-3 mm particles of mixed material generated more liquid phase than+3 mm *** heat input of super-high sintering bed was inhomogeneous due to the heat accumulation effect and unreasonable fuel *** inhomo-geneous sintering heat condition in sintering bed resulted in the different quantities and properties of liquid *** inhomogeneous quantities and properties of liquid phase that were influenced by inhomogeneous distribution of chemical composition,particle size,and heat input led to inhomogeneous mineralizing *** mineralizing condition is the key for homogeneous super-high bed sintering.

关键词： Iron ore Super-high bed sintering Mineralization Material segregation Heat accumulation