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Endoscopic mucosal resection for rectal carcinoids under micro-probe ultrasound guidance

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World Journal of Gastroenterology 2013年第16期19卷 2555-2559页

作者： Fu-Run Zhou Liu-Ye Huang cheng-rong wu Department of Gastroenterology Yu Huang Ding Hospital affiliated to Qingdao University School of Medicine

AIM: To assess the therapeutic value of endoscopic mucosal resection (EMR) under micro-probe ultrasound guidance for rectal carcinoids less than 1 cm in diameter. METHODS: Twenty-one patients pathologically diagnosed with rectal carcinoids following colonoscopy in our hospital from January 2007 to November 2012 were included in this study. The patients consisted of 14 men and 7 women, with a mean age of 52.3 ± 12.2 years (range: 36-72 years). The patients with submucosal tumors less than 1 cm in diameter arising from the rectal and muscularis mucosa detected by micro-probe ultrasound were treated with EMR and followed up with conventional endoscopy and micro-probe ultrasound. RESULTS: All of the 21 tumors were confirmed by micro-probe ultrasound as uniform hypoechoic masses originating from the rectal and muscularis mucosa, without invasion of muscularis propria and vessels, and less than 1 cm in diameter. EMR was successfully completed without bleeding, perforation or other complications. The resected specimens were immunohistochemically confirmed to be carcinoids. Patients were followed up for one to two years, and no tumor recurrence was reported. CONCLUSION: EMR is a safe and effective treatment for rectal carcinoids less than 1 cm in diameter.

关键词： Micro-probe ultrasound Endoscopic mucosal resection Rectal carcinoid Endoscopic submucosal dissection Submucosal tumors

Capillary Property of Entangled Porous Metallic Wire materials and Its Application in Fluid Buffers:Theoretical Analysis and Experimental Study

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Defence Technology（防务技术） 2024年第1期31卷 400-416页

作者： Yu Tang Yiwan wu Hu cheng rong Liu Engineering Research Center for Metal Rubber School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou 350156China AECC Guizhou Liyang Aviation Power Co. LTDGuiyang 550014China College of Computer and Information Sciences Fujian Agriculture and Forestry UniversityFuzhou 350156China

Strong impact does serious harm to the military industries so it is necessary to choose reasonable cushioning material and design effective buffers to prevent the impact of *** on the capillary property entangled porous metallic wire materials(EPMWM),this paper designed a composite buffer which uses EPMWM and viscous fluid as cushioning materials under the low-speed impact of the recoil force device of weapon equipment(such as artillery,mortar,etc.).Combined with the capillary model,porosity,hydraulic diameter,maximum pore diameter and pore distribution were used to characterize the pore structure characteristics of *** calculation model of the damping force of the composite buffer was *** low-speed impact test of the composite buffer was *** parameters of the buffer under low-speed impact were identified according to the model,and the nonlinear model of damping force was *** test results show that the composite buffer with EPMWM and viscous fluid can absorb the impact energy from the recoil movement effectively,and provide a new method for the buffer design of weapon equipment(such as artillery,mortar,etc.).

关键词： Entangled porous metallic wire materials Capillary property Viscousfluid Low-speed impact Damping force

Endoscopic full-thickness resection for gastric submucosal tumors arising from the muscularis propria layer

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World Journal of Gastroenterology 2014年第38期20卷 13981-13986页

作者： Liu-Ye Huang Jun Cui Shu-Juan Lin Bo Zhang cheng-rong wu Department of Gastroenterology Yantai Yu Huang Ding Hospital

AIM: To evaluate the efficacy, safety and feasibility of endoscopic full-thickness resection (EFR) for the treatment of gastric submucosal tumors (SMTs) arising from the muscularis propria.

关键词： Submucosal tumor Stomach Endoscopic full-thickness resection Muscularis propria layer Excision

Small intestinal vascular malformation bleeding:A case report with imaging findings

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World Journal of Gastroenterology 2014年第38期20卷 14076-14078页

作者： Jun Cui Liu-Ye Huang Shu-Juan Lin Long-Zhi Yi cheng-rong wu Bo Zhang Department of Gastroenterology Yan tai Yu Huang Ding Hospital

The small intestine is approximately 5-6 m long and occupies a large area in the abdominal cavity. These factors preclude the use of ordinary endoscopy and X-ray to thoroughly examine the small intestine for bleeding of vascular malformations. Thus,the diagnosis of intestinal bleeding is very difficult. A 47-year-old man presented at the hospital 5 mo ago with dark stool. Several angiomas were detected by oral approach enteroscopy,but no active bleeding was observed. Additionally,no lesions were detected by anal approach enteroscopy;however,gastrointestinal tract bleeding still occurred for an unknown reason. We performed an abdominal vascular enhanced computed tomography examination and detected ileal vascular malformations. Ileum angioma and vascular malformation were detected by a laparoscopic approach,and segmental resection was performed for both lesions,which were confirmed by pathological diagnosis. This report systemically emphasizes the imaging findings of small intestinal vascular malformation bleeding.

关键词： Small intestine Vascular malformation Bleeding Imaging Diagnosis

Effect of Double-Balloon Enteroscopy on Diagnosis and Treatment of Small-Bowel Diseases

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Chinese Medical Journal 2018年第11期131卷 1321-1326页

作者： Li Tang Liu-Ye Huang Jun Cui cheng-rong wu Department of Clinical Medicine Qingdao University Medical College Qingdao Shandong 266021 China Department of Gastroenterology The Affiliated Yantai Yuhuangding Hospital of Qingdao University Yantai Shandong 264000 China

Background： The diagnosis and treatment of small-bowel diseases is clinically difficult. The purpose of this study was to evaluate the diagnostic and therapeutic value of double-balloon enteroscopy in small-bowel diseases. Methods： The history and outcomes of 2806 patients who underwent double-balloon enteroscopy from July 2004 to April 2017 were reviewed, which included 562 patients with obscure digestive tract bleeding, 457 patients with obscure diarrhea, 930 patients with obscure abdominal pain, 795 patients with obscure weight loss, and 62 patients with obscure intestinal obstruction. Examinations were performed through the mouth and/or anus according to the clinical symptoms and abdominal images, lfa lesion was not detected through one direction, examination through the other direction was performed as necessary. Eighty-four patients with small-bowel polyps, 26 with intestinal obstruction caused by enterolith, and 18 with bleeding from Dieulafoy＇s lesions in the small intestine were treated endoscopically. Results： A total of 2806 patients underwent double-balloon enteroscopy, and no serious complications occurred. An endoscopic approach through both the mouth and anus was used in 212 patients. Lesions were detected in 1696 patients, with a detection rate of 60.4%： the rates for obscure digestive tract bleeding, diarrhea, abdominal pain, weight loss, and intestinal obstrtlction were 85.9% （483/562）, 73.5% （336/457）, 48.2% （448/930）, 49.1% （390/795）, and 62.9% （39/62）, respectively. For patients with small-bowel polyps who underwent endoscopic therapy, no complications such as digestive tract bleeding and perforation occurred. Intestinal obstruction with enteroliths was relieved with endoscopic lithotripsy. Among the 18 patients with bleeding from small-bowel Dieulafoy＇s lesions, 14 patients were controlled with endoscopic hemostasis. Conclusion： Double-balloon enteroscopy is useful for diagnosing and treating some small-bowel disease.

关键词： Diagnosis Double-Balloon Enteroscopy Small Bowel Therapy

Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation

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Chinese Journal of Polymer Science 2024年第5期42卷 591-603,I0006页

作者： Qiong-Jun Xu Zhao-Yang Yuan Chang-cheng Wang Hao Liang Yu Shi Hai-Tao wu Hu Xu Jing Zheng Jin-rong wu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu610065China

Semi-interpenetrating(semi-IPN)hydrogels formed by the continuous interpenetration of cross-linked polymer network and linear non-crosslinked polymer with multifunctionality are widely used in biomedical and other ***,the negative impact of linear polymer on the homogeneity of the cross-linked network often leads to a decrease in the mechanical properties of semi-IPN hydrogels and severely limits their ***,a bioinspired hydrogen-bonding induced phase separation strategy is presented to construct the tough semi-IPN polyvinylpyrrolidone/polyacrylamide hydrogels(named PVP/PAM hydrogels),including the linear polymer polyvinylpyrrolidone(PVP)and cross-linked polyacrylamide(PAM)*** resultant PVPx/PAM hydrogels exhibit unique phase separation induced by the hydrogen bonding between PVP and PAM and affected by the amount of substance of ***,the phase separation of PVPx/PAM hydrogels results in excellent mechanical properties with a strain of 2590%,tensile strength of 0.28 MPa and toughness of 2.17 MJ/m^(3).More importantly,the hydrogen bonding between PVP and PAM firstly disrupts to dissipate energy under external forces,so the PVPx/PAM hydrogels exhibit good self-recovery properties and outperform chemically cross-linked PAM hydrogels in impact resistance and damping *** is believed that the PVPx/PAM hydrogels with hydrogen-bonding induced phase separation possess more potential application prospects.

关键词： Tough Semi-interpenetrating networks Polyvinylpyrrolidone/polyacrylamide Hydrogels Phase separation

Interfacial modification using the cross-linkable tannic acid for highly-efficient perovskite solar cells with excellent stability

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Journal of Energy Chemistry 2024年第4期91卷 236-244页

作者： Xing Gao Lirong rong Fei wu Yen-Hung Lin Ye Zeng Junhong Tan rongxing He cheng Zhong Linna Zhu Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy School of Materials&EnergySouthwest UniversityChongqing 400715China Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of ChemistryWuhan UniversityWuhan 430072HubeiChina Key Laboratory of Luminescence Analysis and Molecular Sensing Ministry of EducationSchool of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloon 999077Hong KongChina State Key Laboratory of Advanced Displays and Optoelectronics Technologies The Hong Kong University of Science and TechnologyClear Water BayKowloon 999077Hong KongChina

Although the performance of perovskite solar cells(PSCs)has been dramatically increased in recent years,stability is still the main obstacle preventing the PSCs from being *** device instability can be caused by a variety of reasons,including ions diffusion,surface and grain boundary defects,*** this work,the cross-linkable tannic acid(TA)is introduced to modify perovskite film through post-treatment *** numerous organic functional groups(–OH and C=O)in TA can interact with the uncoordinated Pb^(2+)and I^(-)ions in perovskite,thus passivating defects and inhibiting ions *** addition,the formed TA network can absorb a small amount of the residual moisture inside the device to protect the perovskite ***,TA modification regulates the energy level of perovskite,and reduces interfacial charge ***,following TA treatment,the device efficiency is increased significantly from 21.31%to 23.11%,with a decreased hysteresis ***,the treated device shows excellent air,thermal,and operational *** light of this,the readily available,inexpensive TA has the potential to operate as a multipurpose interfacial modifier to increase device efficiency while also enhancing device stability.

关键词： Tannic acid Defect passivation lons diffusion Hydrophilic Stability Perovskite solar cells

A fuse-based DC circuit breaker with vacuum interrupter enhanced by an external transverse magnetic field

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High Voltage 2024年第3期9卷 710-720页

作者： Yu Xiao Yi wu Yifei wu Fei Yang Mingzhe rong Zhuo Yang State Key Laboratory of Electrical Insulation and Power Equipment School of Electric EngineeringXi'an Jiaotong UniversityXi'anChina State Grid Shaanxi Electric Power Company Limited Xi'anChina

Due to the increasing power system capacity,the interruption of large fault currents has gradually become a major challenge in power *** the moment,such currents are interrupted mainly via circuit breakers based on the method of active current ***,these types of circuit breakers tend to be costly and *** possible alternative—a fuse-based circuit breaker with current commutation process enhanced by an external transverse magnetic field(ETMF)—is proposed by the *** main advantage lies in the fast current commutation achieved by an ETMF-enhanced three-stage increase of the vacuum arc *** study of the current commutation process is mainly represented by the authors,and the influencing factors of the current commutation—contact opening speed and ETMF current—are *** last,the proposed circuit breaker is verified by an experiment,whose results show that a short-circuit current of 42 kA can be interrupted within just 2 ms.

关键词： vacuum transverse interrupt

Endoscopic therapy for gastric stromal tumors originating from the muscularis propria

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World Journal of Gastroenterology 2012年第26期18卷 3465-3471页

作者： Liu-Ye Huang Jun Cui Yun-Xiang Liu cheng-rong wu De-Liang Yi Department of Gastroenterology Yantai Yu Huang Ding HospitalYantai 264000Shandong ProvinceChina

AIM:To explore endoscopic therapy methods for gastric stromal tumors originating from the muscularis ***:For 69 cases diagnosed as gastric stromal tumors originating from the muscularis propria,three types of endoscopic therapy were selected,based on the size of the *** methods included endoscopic ligation and resection(ELR),endoscopic submucosal excavation(ESE) and endoscopic full-thickness resection(EFR).The wound surface and the perforation of the gastric wall were closed with metal *** for CD34,CD117,Dog-1,S-100 and smooth muscle actin(SMA) was performed on the resected ***:A total of 38 cases in which the tumor size was less than 1.2 cm were treated with ELR;three cases were complicated by perforation,and the perforations were closed with metal ***,18 cases in which the tumor size was more than 1.5 cm were treated with ESE,and no perforation ***,13 cases in which the tumor size was more than 2.0 cm were treated with EFR;all of the cases were complicated by artificial perforation,and all of the perforations were closed with metal *** of the 69 cases recovered with medical treatment,and none required surgical *** demonstrated that among all of the 69 gastric stromal tumors diagnosed by gastroscopy,12 cases were gastric leiomyomas(SMA-positive),and the other 57 cases were gastric stromal ***:Gastric stromal tumors originating from the muscularis propria can be treated successfully with endoscopic techniques,which could replace certain surgical operations and should be considered for further application.

关键词： Gastrointestinal stromal tumors Therapy Endoscopy Muscularis propria Resection