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Ileal collision tumor associated with gastrointestinal bleeding: A case report and review of literature

World Journal of Gastrointestinal Surgery 2024年第2期16卷 628-634页

作者： Yu-Qi Wu hong-yan wang Mu-Min Shao Lin Xu Xiao-yan Jiang Shao-Ju Guo Department of Gastroenterology Shenzhen Traditional Chinese Medicine HospitalThe Fourth Clinical Medical College of Guangzhou University of Chinese MedicineShenzhen 518033Guangdong ProvinceChina Department of Pathology Shenzhen Traditional Chinese Medicine HospitalThe Fourth Clinical Medical College of Guangzhou University of Chinese MedicineShenzhen 518033Guangdong ProvinceChina

BACKGROUND Collision tumors involving the small intestine,specifically the combination of a hamartomatous tumor and a lipoma,are extremely *** our knowledge,no previous case report has described a collision tumor composed of two benign tumors of different origins in the small *** SUMMARY Here,we present the case of an 82-year-old woman who presented with hemorrhagic shock and was found to have a mass measuring approximately 50 mm×32 mm×30 mm in the terminal *** on computed tomography scan findings,the mass was initially suspected to be a lipoma.A subsequent colonoscopy revealed a pedunculated submucosal elevation consisting of two distinct parts with a visible demarcation line.A biopsy of the upper portion suggested a juvenile polyp(JP).Owing to the patient’s advanced age,multiple comorbidities,and poor surgical tolerance,a modified endoscopic submucosal dissection was *** examination of the excised mucosal mass revealed a lipoma at the base and a JP at the top,demonstrating evidence of rupture and associated *** patient’s overall health remained satisfactory,with no recurrence of hematochezia during the six-month follow-up *** This case report provides new evidence for the understanding of gastrointestinal collision tumors,emphasizing their diverse clinical presentations and histopathological *** also offers diagnostic and therapeutic insights as well as an approach for managing benign collision tumors.

关键词： Collision tumor Gastrointestinal bleeding Hamartomatous tumor Lipoma Modified endoscopic submucosal dissection Case report

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胰腺分裂症的内镜微创治疗研究进展

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世界华人消化杂志 2024年第3期32卷 199-202页

作者：王艳红邢台市人民医院内镜中心河北省邢台市054000

胰腺分裂症是胰腺的一种先天性解剖变异性疾病,内镜微创治疗疗效好、恢复快、并发症少.本文就胰腺分裂症的发病机制、诊断及治疗方法做一综述.

关键词：胰腺分裂症内镜微创治疗内镜逆行性胰胆管造影术超声内镜

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Density Functional Theory Study of Infrared and Ultraviolet Spectra of Urea L-Malic Acid

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Chinese Journal of Chemical Physics 2008年第6期21卷 535-540页

作者： yan-lan Zhang hong-yan wang Dong-sheng Jiao Yong-hong Hu Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China College of Sciences Southwest Jiaotong University Chengdu 610031 China College of Life Science and Pharmaceutical Engineering Nanjing University of Technology Nanjing 210009 China

Urea L-malic acid, a new second order nonlinear optical crystal, was studied using density functional theory （DFT）. PBEPBE/6-31＋G（d,p） method, the optimal method for comparing the results from the several DFT methods, was chosen to study the molecular structure. Infrared and ultraviolet-visible spectra were obtained and compared with experiments. The ultraviolet-visible spectrum was also analyzed by the molecular orbital population. The geometries, and the infrared and ultraviolet-visible spectra in water were studied using DFT methods in combination with the polarized continuum model to predict the perturbations by the solvent effect.

关键词： Urea L-malic acid Density functional theory Molecular structure Infrared spectrum Ultraviolet-visible spectrum

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An energy harvester combining a piezoelectric cantilever and a single degree of freedom elastic system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第7期13卷 526-537页

作者： hong-yan wang Xiao-biao SHAN Tan XIE State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150001China College of Computer and Control Engineering Qiqihar UniversityQiqihar 161006China

This paper presents a type of vibration energy harvester combining a piezoelectric cantilever and a single degree of freedom (SDOF) elastic system. The main function of the additional SDOF elastic system is to magnify vibration displacement of the piezoelectric cantilever to improve the power output. A mathematical model of the energy harvester is developed based on Hamilton's principle and Rayleigh-Ritz method. Furthermore, the effects of the structural parameters of the SDOF elastic system on the electromechanical outputs of the energy harvester are analyzed numerically. The accuracy of the output performance in the numerical solution is identified from the finite element method (FEM). A good agreement is found between the numerical results and FEM results. The results show that the power output can be increased and the frequency bandwidth can be improved when the SDOF elastic system has a larger lumped mass and a smaller damping ratio. The numerical results also indicate that a matching load resistance under the short circuit resonance condition can obtain a higher current output, and so is more suitable for application to the piezoelectric energy harvester.

关键词： Piezoelectric cantilever Single degree of freedom elastic (SDOF) system Energy harvesting Finite element analysis(FEA)

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Effects of shot peening and laser remelting on oxygen-permeation treatment of titanium alloy

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 268-273页

作者： MA hong-yan wang Mao-cai WEI Zheng XIN Gong-chun State Key Laboratory for Corrosion and Protection Institute of Metal Research Graduate School of Chinese Academy of Sciences Beijing 100030 China State Key Laboratory for Corrosion and Protection Institute of Metal Research Graduate School of Chinese Academy of Sciences Beijing 100030 China Shenyang Liming Aero-engine Group Corporation Shenyang 110043 China Shenyang Liming Aero-engine Group Corporation Shenyang 110043 China

The influence of surface pre-treatments, shot-peening (SP) and laser remelting (LR), on oxygen permeation behaviors of titanium alloy TC11 was investigated. Optical microscope, SEM with EDAX, XRD, and microhardness tester were employed to characterize the microstructure, composition and hardness of this alloy. The results show that the surface roughness is increased by shot-peening, and the microstructure with fine-grain can be obtained by LR pre-treatment. The pre-treated samples were oxygen-permeated at (810± 10) ℃ for 10 h in atmospheric air. The outer layer consists essentially of TiO2, trace Ti2 N, Ti3Al and Ti3AlN for the SP pre-treatment and thin oxygen solution layer is found in the subsurface layer. As for LR pre-treatment, the outer layer consists mainly of TiO2 and small amounts of TiO, and the inner layer consists of alpha crystals, rich in interstitial atoms. Samples by LR pre-treatment has thicker hardened layer with higher hardness values in comparison with SP pre-treated *** boost diffusion of oxygen and hardening mechanisms were discussed based on the experimental results.

关键词： shot peening laser remelting oxygen-permeation titanium solution

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The Generalized Inverse of Singular Integral Operators on an Open Arc and Its Applications

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Wuhan University Journal of Natural Sciences 2001年第4期6卷 747-753页

作者： Li hong-yan wang Xiao-ling School of Mathematics and Statistics Wuhan University Wuhan 430072 China

After choosing weight functions suitably, we define a Banach spaceH ω μ (L) and discuss the generalized inverse of singular integral operators on an open arc. Using the generalized inverse, we obtain the solutions f... 详细信息

关键词： open arc generalized inverse singular integral equations with kernel having singularities of order one

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Treatment of radiation-induced hemorrhagic gastritis with prednisolone:A case report

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World Journal of Gastroenterology 2012年第48期18卷 7402-7404页

作者： Lan Zhang Xiao-Ying Xie yan wang yan-hong wang Yi Chen Zheng-Gang Ren Liver Cancer Institute Zhongshan HospitalFudan University Key Laboratory of Carcinogenesis and Cancer Invasion Ministry of EducationFudan University

Radiation-induced gastritis is an infrequent cause of gastrointestinal *** is a serious complication arising from radiation therapy,and the standard treatment method has not been *** initial injury is characteristically acute inflammation of gastric *** presented a 46-year-old male patient with hemorrhagic gastritis induced by external radiotherapy for metastatic retroperitoneal lymph node of hepatocellular *** endoscopic examination showed diffuse edematous hyperemicmucosa with telangiectasias in the whole muscosa of the stomach and duodenal *** hemorrhagic patches with active oozing were found over the ***-secretary therapy was initiated for hemostasis,but melena still occurred off and ***,he was successfully treated by prednisolone *** therefore strongly argue in favor of perdnisolone therapy to effectively treat patients with radiation-induced hemorrhagic gastritis.

关键词： Hemorrhagic gastritis Radiation Prednisolone Hepatocellular carcinoma Gastrointestinal bleeding

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Growth mechanism of CdS film prepared by chemical bath deposition

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Rare Metals 2014年第3期33卷 324-329页

作者： Xing-Yu Peng hong-Wei Gu Teng Zhang Fa-Zhu Ding Fei Qu hong-yan wang Key Laboratory of Applied Superconductivity Institute of Electrical Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences

In this paper, sodium citrate was adopted as a complexing agent and ammonia merely served as pH adjustor to investigate the growth mechanism of CdS film The growth rate, structural properties, surface morphology microstructure, and optical properties of CdS films were studied by profilometer, X-ray diffractometer（XRD）scanning electron microscopy（SEM）, transmission elec tron microscopy（TEM）, and spectrophotometer, respec tively. The SEM images show that CdS films prepared with higher ammonia concentration have lower nucleation density on substrate. SEM and EDS results show that the formation of Cd（OH）2is not required in the growth of CdS film. As the ammonia concentration increases, the sites tha previously adsorbed S2-are taken by OH-which leads to lower S2-density on substrate. CdS film forms through direct reaction of Cd2？with the S2-which are adsorbed on the substrate. Lower S2-density on the substrate results in the decrease of particle density on the substrate. The as deposited CdS films have relatively high-average trans mittance（＊80 %） in the wavelength range from 500 to1,000 nm which makes them suitable to be used in sola cell.

关键词： CdS Chemical bath deposition Ammoniaconcentration Growth mechanism

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Morphological evolution of CdS films prepared by chemical bath deposition

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Rare Metals 2013年第4期32卷 380-389页

作者： Xing-Yu Peng hong-Wei Gu Teng Zhang Fei Qu Fa-Zhu Ding hong-yan wang Key Laboratory of Applied Superconductivity Institute of Electrical Engineering Chinese Academy of Sciences

In this article, the growth process of chemical bath deposited CdS films was systematically investigated. The structural, optical, and morphological properties were investigated by X-ray diffraction （XRD）, transmission electron microscope （TEM）, UV-Vis spectrophotometer, scanning electron microscope （SEM）, respectively. CdS nanocubes with size of less than 500 nm and nanocrystal-lites with diameter of less than 5 nm forming in reaction solution are observed. According to the TEM results and the SEM morphological evolution of CdS films, a crystal-lite-by-crystallite growth mechanism is proposed to eluci-date the growth process of chemical bath deposited CdS films based on the present growth mechanism.

关键词： CdS Chemical bath deposition Growthmechanism Crystallite-by-crystallite

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Microstructure and superconducting properties of (BaTiO3,Y2O3)-doped YBCO films under different firing temperatures

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Rare Metals 2017年第1期36卷 37-41页

作者： hong-yan wang Fa-Zhu Ding hong-Wei Gu Hui-Liang Zhang Ze-Bin Dong University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Applied Superconductivity Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190 China

YBaCuO(YBCO) films with co-doping of Ba Ti O(BTO) and YOnanostructures were successfully fabricated on La Al O(LAO) substrate by metal organic deposition using trifluoroacetates(TFA-MOD). The focus of this study was to optimize the process conditions during the firing heat treatment of high critical current density(J C)-co-doped YBCO films. The effect of the firing temperatures on both the surface morphology and the superconducting properties for the doped YBCO films was systematically studied. According to the X-ray diffraction(XRD) and scanning electron microscopy(SEM) results,the films prepared at 820 and 850 °C show poor electrical performance due to impurity phases and large pores. In contrast, the dense YBCO films prepared at 830 and840 °C with the critical current densities of 10 MA-cm(77 K, 0 T) are obtained.

关键词： YBa2Cu3O7-x BaTiO3 and Y2O3 nanostructures Firing temperature TFA-MOD

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