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Changes of Intestinal Permeability in Cholelithiasis Patients

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Chinese Medical Sciences Journal 2009年第3期24卷 195-196页

作者： Shao-long Sun Shuo-dong wu dong-xu Cui Bao-lin Liu Xian-wei Dai Department of General Surgery Shengjing Hospital China Medical University Shenyang 110004 China

In normal condition, intestine mucosa possesses barrier function. When the barrier function of intestine mucosa was damaged, intestinal bacteria, endotoxin, or other substances would enter blood. It is generally accepted that biliary bacteria origins from the intestine either via duodenal papilla or intestinal mucosa. In this study, we aimed to investigate the intestinal permeability changes of cholelithiasis patients to elucidate the possible pathogenesis of cholelithiasis.

关键词： cholelithiasis technetium-99m-diethylene-triamine pentaacetic acid intestinal permeability

Overview of in-situ oxygen production technologies for lunar resources

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng Xu Sheng Pang Liangwei Cong Guoyu Qian dong Wang Laishi Li Yusheng wu Zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

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乾嘉年间徽商汪氏信札的整理及研究价值

安徽师范大学学报（社会科学版） 2012年第1期40卷 12-16页

作者：吴冬冬安徽师范大学历史与社会学院安徽芜湖241003

徽商汪氏信札收藏于安徽省歙县档案馆,是近年来发现的不可多得的徽商资料。信札的主人汪腾蛟,是一个生活在乾嘉年间的典型徽商,有着较为显赫的家世,世以读书、经商为业,曾捐赀出任萧山县丞。信札涉及徽商家庭生活以及封建地方官场等方... 详细信息

徽商汪氏信札收藏于安徽省歙县档案馆,是近年来发现的不可多得的徽商资料。信札的主人汪腾蛟,是一个生活在乾嘉年间的典型徽商,有着较为显赫的家世,世以读书、经商为业,曾捐赀出任萧山县丞。信札涉及徽商家庭生活以及封建地方官场等方面内容,具有重要的研究价值。

关键词：汪氏信札汪腾蛟徽商

Hastelloy C-276薄板激光焊接接头疲劳性能

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中国有色金属学报 2016年第12期26卷 2555-2563页

作者：刘帅吴冬冬柴东升周思雨马广义周平吴东江大连理工大学精密与特种加工教育部重点实验室大连116024

对0.5 mm厚Hastelloy C-276薄板激光焊接接头进行疲劳试验,结合应力-寿命(S-N)曲线和疲劳断口形貌,研究母材及焊接接头的疲劳性能,分析母材和焊接接头的疲劳断裂机理。结果表明:0.5 mm Hastelloy C-276薄板焊接接头和母材的S-N曲线斜率... 详细信息

对0.5 mm厚Hastelloy C-276薄板激光焊接接头进行疲劳试验,结合应力-寿命(S-N)曲线和疲劳断口形貌,研究母材及焊接接头的疲劳性能,分析母材和焊接接头的疲劳断裂机理。结果表明:0.5 mm Hastelloy C-276薄板焊接接头和母材的S-N曲线斜率基本相同,焊接接头疲劳性能和母材的基本相当;母材疲劳断口疲劳裂纹起源于试样侧表面,主要沿宽度方向扩展,随着应力的减小,疲劳源数目减少,疲劳裂纹扩展速率减小;焊接接头在母材和焊缝处随机断裂,焊接接头母材区断口形貌和母材断口形貌基本一致,而焊接接头焊缝区断口的疲劳裂纹起源于侧表面棱角处和焊缝表面,焊缝表面是主要疲劳源,裂纹主要沿厚度方向进行扩展,疲劳裂纹扩展区呈现出准解理断裂特征。

关键词： Hastelloy C-276 激光焊接薄板疲劳性能

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基于向量识别的启发式路径推测算法

计算机学报 2009年第7期32卷 1443-1450页

作者：吕卫锋吴东东诸彤宇北京航空航天大学软件开发环境国家重点实验室北京100083

浮动车数据主要是由车辆的轨迹点数据组成,是一种重要的原始数据,可以广泛地用于各种交通应用,如交通管理和控制、路况计算等.但是原始的车辆GPS数据存在定位误差,必须经过路径推测的修正处理才可以应用.传统的路径推测算法主要采用两... 详细信息

浮动车数据主要是由车辆的轨迹点数据组成,是一种重要的原始数据,可以广泛地用于各种交通应用,如交通管理和控制、路况计算等.但是原始的车辆GPS数据存在定位误差,必须经过路径推测的修正处理才可以应用.传统的路径推测算法主要采用两种方法:渐增式和全局式.两种方法各有优缺点,渐增式方法计算速度快但准确性差,全局式方法准确性好但计算速度慢.通过综合考虑两种传统算法,文中提出了一种基于向量识别的启发式路径推测算法,该算法采用了启发式图搜索方式,导入几何运算的约束条件,根据车辆轨迹点所形成的向量与路网模型比较来进行启发式搜索,并选择车辆所有可能行驶的候选路径.根据全局择优的方式从整体进行比较,确定车辆最有可能的行驶路径.实验结果表明,这种算法能够在复杂路网下,比较准确地推测距离间隔较大的车辆轨迹点,并且能够实时高效地处理大规模数据.

关键词：路径推测浮动车数据 GPS启发式搜索

Enhanced solid-electrolyte interface efficiency for practically viable hydrogen-air fuel cell systems

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Journal of Energy Chemistry 2025年第1期100卷 356-368页

作者： Venkitesan Sakthivel dong Jin Yoo Graduate School Department of Energy Storage/Conversion Engineering (BK21 FOUR) Hydrogen and Fuel Cell Research Center Jeonbuk National University Jeonju Department of Life Science Jeonbuk National University

Proton exchange membrane fuel cells （PEMFCs） provide an appealing sustainable energy system,with the solid-electrolyte membrane playing a crucial role in its overall ***,sulfonated poly（1,4-phenylene ether-ether sulfone）(SPEES),an aromatic hydrocarbon polymer,has garnered considerable attention as an alternative to Nafion ***,the long-term durability and stability of SPEES present a significant *** this context,we introduce a potential solution in the form of an additive,specifically a core–shell-based amine-functionalized iron titanate （A–Fe2TiO5）,which holds promise for improving the lifetime,proton conductivity,and power density of SPEES in *** modified SPEES/A–Fe2TiO5composite membranes exhibited notable characteristics,including high water uptake,enhanced thermomechanical stability,and oxidative ***,the SPEES membrane loaded with 1.2 wt%of A–Fe2TiO5demonstrates a maximum proton conductivity of 155 mS cm-1,a twofold increase compared to the SPEES membrane,at 80°C under 100%relative humidity （RH）.Furthermore,the 1.2 wt%of A–Fe2TiO5/SPEES composite membranes exhibited a maximum power density of 397.37 mW cm-2and a current density of 1148 mA cm-2at 60°C under 100%RH,with an opencircuit voltage decay of 0.05 m V/h during 103 h of continuous *** study offers significant insights into the development and understanding of innovative SPEES nanocomposite membranes for PEMFC applications.

关键词： Acid-base Hybrid membrane Proton conductivity Polymer electrolyte fuel cell Single-cell performance

Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun dongfang Hou Meidi Wang Xueqian wu Tao wu dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions LSPR Photocatalyst Phase junction Schottky junction Photothermal effect

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布洛芬磁性固体脂质纳米粒的制备

中国组织工程研究与临床康复 2011年第34期15卷 6382-6384页

作者：吴冬冬辽宁省分析科学研究院辽宁省沈阳市110015

背景:布洛芬因溶解度和溶血问题,目前仍无注射给药剂型上市。目的:将自制的磁流体载入固体脂质纳米粒中,制备布洛芬磁性固体脂质纳米粒。方法:以包封率为指标,用正交设计确定布洛芬固体脂质纳米粒的最优处方。以共沉淀法制备Fe3O4磁流... 详细信息

背景:布洛芬因溶解度和溶血问题,目前仍无注射给药剂型上市。目的:将自制的磁流体载入固体脂质纳米粒中,制备布洛芬磁性固体脂质纳米粒。方法:以包封率为指标,用正交设计确定布洛芬固体脂质纳米粒的最优处方。以共沉淀法制备Fe3O4磁流体作为磁性材料,采用乳化分散-超声法,按照最优处方制备布洛芬磁性固体脂质纳米粒。观察其表面形态、粒径大小、分布和Zeta电位、饱和磁化强度、包封率及体外释放特征。结果与结论:通过正交实验得最优处方为布洛芬0.05g、F-680.2g、吐温800.05g、卵磷脂0.1g、单硬脂酸甘油酯0.05g、磁流体2.5mL。用该工艺和处方制备的布洛芬磁性固体脂质纳米粒粒子呈均匀球形;平均粒径、zeta电位为(122±16)nm和(-13.3±6.94)mV;药物包封率和Fe3O4铁包封率分别为84.15%和83.19%;布洛芬在给定介质中36h释放较完全,符合制剂学性质要求。

关键词：布洛芬磁性固体脂质纳米粒制备制剂学性质药物控释系统及其载体材料

微波消解-ICP-MS法同时测定软胶囊中10种痕量元素

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质谱学报 2015年第5期36卷 442-447页

作者：曹璨王志嘉吴冬冬崔畅吴志刚辽宁省分析科学研究院辽宁沈阳110015

为应对国家食品、药品安全的限量要求,采用微波消解法对软胶囊进行前处理,电感耦合等离子体质谱法（ICP-MS）同时测定软胶囊中铅、镉、砷、汞、铬、硒、铜、铁、锰和镍等10种痕量元素,并对测定条件进行了优化。结果表明：汞元素在0~10μ... 详细信息

为应对国家食品、药品安全的限量要求,采用微波消解法对软胶囊进行前处理,电感耦合等离子体质谱法（ICP-MS）同时测定软胶囊中铅、镉、砷、汞、铬、硒、铜、铁、锰和镍等10种痕量元素,并对测定条件进行了优化。结果表明：汞元素在0~10μg/L范围内,其他元素在0~50μg/L范围内的线性关系良好,线性相关系数r在0.999 4~0.999 9之间,方法检出限为0.011~0.21μg/kg;考察了方法精密度,测定结果的相对标准偏差（RSD）为1.2%~5.7%;对各元素进行了3个不同浓度水平下的加标回收率实验,平均回收率为90.0%~110.0%。采用该方法测定了角鲨鱼肝NRCDOLT-3和奶粉GBW10017中的相应元素,测定结果与标准值无显著差异,验证了该方法测定多种不同基体软胶囊中痕量元素的实用性。

关键词：微波消解电感耦合等离子体质谱法(ICP-MS) 软胶囊痕量元素