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Hyperglycemic Effects of a Periocular Dexamethasone Injection in Diabetic Patients after Vitreoretinal Surgery

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Biomedical and Environmental Sciences 2012年第3期25卷 311-316页

作者： zhang yong peng peng Xiao Yan LI Zhi Hua CHEN Feng Hua Beijing Ophthalmology and Visual Science Laboratory Beo'ing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing 100730China

Objective To examine the hyperglycemic effects of periocular dexamethasone injection in type 2 diabetic patients after vitreoretinal surgery （VRS）. Methods This was a retrospective non-randomized controlled trial. Twenty consecutive hospitalized patients with type 2 diabetes and ocular inflammatory reaction after VRS were enrolled in this study. Ten patients received 2.5 mg dexamethasone and 10 patients received 5 mg dexamethasone. Fourteen consecutive type 2 diabetic patients without ocular inflammatory reaction after VRS were used as control group. We measured fasting blood glucose （FBG） and at 2 h after each meal （post prandial glucose, PBG; 09：00, 13：00, and 19：00 h） after periocular dexamethasone injection. Differences among three groups were determined by q tests. Results The PBG levels in both dexamethasone-treated groups started to increase within 5 h after injection （i.e., PBG at 13：00 h）, and were significantly increased at 29：00 h after injection （P〈0.05）. BG levels were almost 2-fold higher than at baseline and compared with the control group. The BG values declined gradually by 24 h to 48 h after injection. There were no differences in BG levels between the two dexamethasone-treated groups （P〉0.05）, except for PBG at 19：00 h on day 2 after injection （P〈0.05）. Conclusion Periocular dexamethasone injection can cause transient hyperglycemia in diabetic patients after VRS. BG monitoring should be performed following such injection.

关键词： Dexamethasone Periocular injection Vitreoretinal surgery Diabetes mellitus Blood glucose

DKP-SLAM:A Visual SLAM for Dynamic Indoor Scenes Based on Object Detection and Region Probability

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Computers, Materials & Continua 2025年第1期82卷 1329-1347页

作者： Menglin Yin yong Qin Jiansheng peng College of Automation Guangxi University of Science and TechnologyLiuzhou545000China Department of Artificial Intelligence and Manufacturing Hechi UniversityHechi546300China Key Laboratory of AI and Information Processing Education Department of Guangxi Zhuang Autonomous RegionHechi546300China Guangxi Key Laboratory of Sericulture Ecology and Applied Intelligent Technology School of Chemistry and BioengineeringHechi UniversityHechi546300China

In dynamic scenarios,visual simultaneous localization and mapping(SLAM)algorithms often incorrectly incorporate dynamic points during camera pose computation,leading to reduced accuracy and *** paper presents a dynamic SLAM algorithm that leverages object detection and regional dynamic ***,a parallel thread employs the YOLOX object detectionmodel to gather 2D semantic information and compensate for missed ***,an improved K-means++clustering algorithm clusters bounding box regions,adaptively determining the threshold for extracting dynamic object contours as dynamic points *** process divides the image into low dynamic,suspicious dynamic,and high dynamic *** the tracking thread,the dynamic point removal module assigns dynamic probability weights to the feature points in these *** with geometric methods,it detects and removes the dynamic *** final evaluation on the public TUM RGB-D dataset shows that the proposed dynamic SLAM algorithm surpasses most existing SLAM algorithms,providing better pose estimation accuracy and robustness in dynamic environments.

关键词： Visual SLAM dynamic scene YOLOX K-means++clustering dynamic probability

Technology of Arc-added Glow-discharge Brazing and Brazing of Ceramic to Metal

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厦门大学学报(自然科学版) 2002年第S1期 83-84页

作者： WANG Wen-xian, zhang yong-qing, ZHAO peng-sheng (College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

A new brazing method, arc-added glow-discharge br az ing (AGB), was studied in respects of mechanism, technology, application and equ ipment in which the workpiece is directly heated by both ion bombardment of glow discharge and radiation heat of arc discharge. The AGB equipment was manufactured by Taiyuan University of Technology and i t mainly consists of: (1) brazing furnace; (2) vacuum system; (3) power closet; (4) measuring and control system. The heating cycle of brazing was composed of heating speed, brazing temperatu re, heat-shielding time, and cooling speed and determined by brazing parameter such as limit degree of vacuum (Va), work pressure (P), glow voltage ( V), arc current (I), P-V match and brazing time (t). The effect o f brazing parameter on the quality of brazing joints was analyzed and discussed. The heating cycle of brazing was designed according to the material and structu re of the workpiece and the result of their optimization were controlled by a FX 2 industrial PC computer. Many metals or alien metals can be brazed by means of AGB method like steel, cop per, aluminum and stainless steel. However, the dominance of AGB is that non-me tals such as ceramic are brazed in AGB method. In the process of AGB, it is possible to deposit active active metallic elements on ceramic surface by glow discharge metallizing with arc source in which the s pattering deposition goes on with a high speed and can occur at a comparatively low temperature. Si 3N 4 ceramics have been put to test by using the above pro cess. Take the T-shaped joint brazing of Si 3N 4 to 45 # steel as an example (Si 3N 4 is of 13×13×7 mm in vertical position and 45 # steel is 1 mm thic k in horizontal position). After brazing, the compositions at different position s of the brazing fillet have been examined by EDX. EPMA analysis showed the exis tence of TiN on ceramic surface, which was produced by the following reaction: S i 3N 4+4Ti = 4TiN+3Si. TiN is a compound similar to metal, whi

关键词： brazing arc-added glow-discharge brazing tech nology ceramic

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi Jia Jinhua zhang Kailu Guo Lanyue zhang Gening Du Hao You Junfeng Huang Mudong Tu Hua Li yong peng Wei Dou Cailing Xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： X ray photoelectron spectroscopy

Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang zhang Changhua Wang Chung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing Cheng yong peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination

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证券监管机构与基金管理者的进化博弈分析

哈尔滨工业大学学报 2009年第4期41卷 264-266页

作者：张永鹏重庆工商大学长江上游经济研究中心重庆大学工商管理博士后流动站

为了改善目前我国证券监管机构与基金经理之间的"严格监管-守法经营-不严格监管-违规经营"的死循环,采用进化博弈的方法对证券监管机构与基金管理者之间的博弈进行了分析,发现在一定的条件下没有进化稳定策略,基金管理者的违规经营与守... 详细信息

为了改善目前我国证券监管机构与基金经理之间的"严格监管-守法经营-不严格监管-违规经营"的死循环,采用进化博弈的方法对证券监管机构与基金管理者之间的博弈进行了分析,发现在一定的条件下没有进化稳定策略,基金管理者的违规经营与守法经营两种策略交替出现,无法消除基金管理者的违规经营,针对这种情况,提出了大力发展基金公司与机构投资者;加大对违规经营的基金管理者的处罚力度;减少监管机构采取严格监管时额外增加的成本;加强对监管机构不作为行为的督促与处罚.

关键词：进化博弈证券市场基金管理者

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过滤准则下基金经理跳槽的进化博弈分析

哈尔滨工业大学学报 2009年第2期41卷 236-238页

作者：张永鹏重庆工商大学长江上游经济研究中心重庆400067 重庆大学工商管理博士后流动站重庆400067

为了防止基金经理人的频繁跳槽对于基金持有人的利益以及基金公司的经营风格等造成不利影响,结合进化博弈论与行为金融学的有关动量交易策略(momentum trading strategy)的过滤准则观点建立模型—即只有当私募基金给基金经理提供的待遇... 详细信息

为了防止基金经理人的频繁跳槽对于基金持有人的利益以及基金公司的经营风格等造成不利影响,结合进化博弈论与行为金融学的有关动量交易策略(momentum trading strategy)的过滤准则观点建立模型—即只有当私募基金给基金经理提供的待遇与公募基金提供的待遇之差大于某一个正值时,才会诱使公募基金的经理跳槽到私募基金.通过模型对基金经理的跳槽行为进行了分析,并根据模型得出增加基金经理的激励、提高基金经理的跳槽成本限制基金经理频繁跳槽的一些措施.

关键词：进化博弈证券市场基金管理者跳槽

椎弓根钉经椎旁肌间隙置入修复胸腰椎骨折:矫正效果及生物相容性随访

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中国组织工程研究 2015年第22期19卷 3513-3518页

作者：崔威张勇鹏张斌陕西省核工业215医院脊柱外科陕西省咸阳市712000

背景:临床修复脊柱胸腰段骨折的过程中可以选择不同的修复入路,其中传统后正中入路会对患者造成较大的创伤,容易导致一定概率不良后果的出现。目的:对比椎弓根螺钉经传统后正中入路与椎旁肌间隙入路置入内固定修复脊柱胸腰段骨折的效果... 详细信息

背景:临床修复脊柱胸腰段骨折的过程中可以选择不同的修复入路,其中传统后正中入路会对患者造成较大的创伤,容易导致一定概率不良后果的出现。目的:对比椎弓根螺钉经传统后正中入路与椎旁肌间隙入路置入内固定修复脊柱胸腰段骨折的效果及生物相容性。方法:回顾性分析陕西省核工业215医院2012年12月至2013年12月收治的53例脊柱胸腰段骨折患者的临床资料,按照修复入路分为2组,对照组27例实施传统后正中入路椎弓根螺钉置入内固定,观察组26例实施椎旁肌间隙入路微创椎弓根螺钉置入内固定。修复后随访12个月,观察两组患者的影像学检查结果、疼痛目测类比评分及围手术期相关指标,并进行比较。结果与结论:分别在修复前、修复后即刻以及末次随访对两组患者进行影像学检查,可得两组经过不同的治疗,均获得良好的椎体前缘高度和后凸角矫正效果,但组间比较差异无显著性意义(均P>0.05),表明两组的椎体前缘高度和后凸角矫正效果相当。修复后24 h,3 d和末次随访观察组患者的疼痛目测类比评分均显著低于对照组(均P<0.05)。对两组患者的围修复期相关指标进行分析,可得观察组在术中出血量、引流以及修复后卧床时间等方面均较对照组存在显著优势(均P<0.05)。表明较之传统后正中入路,利用椎旁肌间隙入路微创椎弓根螺钉置入固定脊柱胸腰段骨折可以获得更好的修复效果及生物相容性。

关键词：胸椎腰椎骨折骨钉内固定器随访研究植入物脊柱植入物脊柱胸腰段骨折手术入路椎旁肌间隙入路后正中入路矫正效果生物相容性随访

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基于收购报价的市场操纵博弈分析

西南交通大学学报 2005年第3期40卷 385-389页

作者：邱沛光张永鹏重庆工商大学财政金融学院西南交通大学经济管理学院四川成都610031

用不完全信息博弈模型分析在收购者作出要约收购报价前后噪声交易量的增加以及收购活动量水平对操纵可能性的影响.在此基础上考察在收购者报价以后是否允许其放弃该报价. 当收购活动量水平较高时,唯一的均衡形式是操纵者没有利润,若允... 详细信息

用不完全信息博弈模型分析在收购者作出要约收购报价前后噪声交易量的增加以及收购活动量水平对操纵可能性的影响.在此基础上考察在收购者报价以后是否允许其放弃该报价. 当收购活动量水平较高时,唯一的均衡形式是操纵者没有利润,若允许收购者放弃报价则增加了社会盈余。当收购活动量水平较低时,唯一的均衡形式是操纵者获得利润,此时,若允许收购者放弃报价则降低了社会盈余。

关键词：股价市场操纵博弈模型收购报价收购活动量噪声交易量