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In situ Remediation of Petroleum Contaminated Groundwater by Permeable Reactive Barrier with Hydrothermal Palygorskite as Medium

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Chemical Research in Chinese Universities 2013年第1期29卷 37-41页

作者： zhang sheng-yu zhang yu-ling SU Xiao-si zhang Ying Institute of Water Resources and Environmental Key Lab of Groundwater Resources and Environment Ministry of Education Jilin University Changchun 130026 P. R. China

The permeable reactive barrier（PRB） has proven to be a costeffective technique to remediate the petro leum contaminated groundwater at a northeast field site in China. In this study, the geology, hydrogeology and con tamination characterization of the field site were investigated and the natural hydrothermal palygorskite was chosen as a reactive medium. Furthermore, the adsorption of the total petroleum hydrocarbons（TPH） in the groundwater onto hydrothermal palygorskite and the adsorption kinetics were investigated. The results indicate that the removal rates of TPH, benzene, naphthalene and phenantharene could all reach up to 90% by hydrothermal palygorskite with a diameter of 0.25-2.00 mm that had been thermally pretreated at 140 ℃. The adsorption of TPH onto hydrothermal palygorskite after pretreatment followed a pseudosecondorder kinetic model and a Langmuir adsorption isotherm, suggesting that the theoretic adsorption capacity of hydrothermal palygorskite for adsorbate could be 4.2 g/g. Scan ning electron microscopy（SEM）, infrared spectroscopy（IR）, Xray diffraction（XRD） and Xray fluorescence spec troscopy（XRF） were carried out to analyze the adsorption mechanism. The results reveal that hydrothermal palygors kite is a fibrous silicate mineral enriched in Mg and A1 with large surface area and porosity. The dense cluster acicular and fibrous crystal of hydrothermal palygorskite, and its effect polar group OH played an important role in the physical and chemical adsorption processes of it for contaminants. This study has demonstrated hydrothermal paly gorskite is a reliable reactive medium for in situ remediation of petroleum contaminated groundwater at field sites.

关键词： Petroleum contaminated groundwater Hydrothermal palygorskite Total petroleum hydrocarbon(TPH) Adsorption

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Optomechanical-organized multipulse dynamics in ultrafast fiber laser

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Chinese Physics B 2021年第11期30卷 338-342页

作者： Lin Huang yu-sheng zhang yu-Dong Cui Ceyear Technologies Co. LtdQingdao 266555China Science and Technology on Electronic Test&Measurement Laboratory Qingdao 266555China School of Information Science and Engineering Shandong UniversityQingdao 266237China Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

A novel organized multipulse pattern and its birth dynamics under strong optomechanical effect in microfiber-assisted ultrafast fiber laser are investigated in this *** background pulses are observed to obviously exhibit selectively amplifying self-organized process of evolving into quasi-stable equidistant *** radio frequency spectrum of the multipulse pattern displays a harmonic mode-locking-like behavior with a repetition rate of 2.0138 GHz,corresponding to the frequency of torsional-radial(TR_(2m))acoustic mode in *** results show the evidence of optomechanical effect in dominating the birth dynamics and pattern of multipulse.

关键词： fiber lasers multipulse operation optomechanical effect

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Temporality-enhanced knowledge memory network for factoid question answering

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Frontiers of Information Technology & Electronic Engineering 2018年第1期19卷 104-115页

作者： Xin-yu DUAN Si-liang TANG sheng-yu zhang Yin zhang Zhou ZHAO Jian-ru XUE yue-ting ZHUANG Fei WU College of Computer Science and Technology Zhejiang University School of Information Management Wuhan University Institute of Artificial Intelligence and Robotics Xi'an Jiaotong University

Question answering is an important problem that aims to deliver specific answers to questions posed by humans in natural *** to efficiently identify the exact answer with respect to a given question has become an active line of *** approaches in factoid question answering tasks typically focus on modeling the semantic relevance or syntactic relationship between a given question and its corresponding *** of these models suffer when a question contains very little content that is indicative of the *** this paper,we devise an architecture named the temporality-enhanced knowledge memory network(TE-KMN) and apply the model to a factoid question answering dataset from a trivia competition called quiz *** most of the existing approaches,our model encodes not only the content of questions and answers,but also the temporal cues in a sequence of ordered sentences which gradually remark the ***,our model collaboratively uses external knowledge for a better understanding of a given *** experimental results demonstrate that our method achieves better performance than several state-of-the-art methods.

关键词： Question answering Knowledge memory Temporality interaction

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Optimized Electronic Modification of S-Doped CuO Induced by Oxidative Reconstruction for Coupling Glycerol Electrooxidation with Hydrogen Evolution

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Nano-Micro Letters 2023年第10期15卷 622-637页

作者： Ruo‑Yao Fan Xue‑Jun Zhai Wei‑Zhen Qiao yu‑sheng zhang Ning yu Na Xu Qian‑Xi Lv Yong‑Ming Chai Bin Dong China State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580People’s Republic of China

Glycerol(electrochemical) oxidation reaction(GOR) producing organic small molecule acid and coupling with hydrogen evolution reaction is a critical aspect of ensuring balanced glycerol capacity and promoting hydrogen generation on a large scale. However, the development of highly efficient and selective non-noble metal-based GOR electrocatalysts is still a key problem. Here, an S-doped CuO nanorod array catalyst(S-CuO/CF) constructed by sulfur leaching and oxidative remodeling is used to drive GOR at low potentials: It requires potentials of only 1.23 and 1.33 V versus RHE to provide currents of 100 and 500 mA cm^(-2), respectively. Moreover, it shows satisfactory comprehensive performance(at 100 mA cm^(-2), V_(cell) = 1.37 V) when assembled as the anode in asymmetric coupled electrolytic cell. Furthermore, we propose a detailed cycle reaction pathway(in alkaline environment) of S-doped CuO surface promoting GOR to produce formic acid and glycolic acid. Among them, the C–C bond breaking and lattice oxygen deintercalation steps frequently involved in the reaction pathway are the key factors to determine the catalytic performance and product selectivity. This research provides valuable guidance for the development of transition metal-based electrocatalysts for GOR and valuable insights into the glycerol oxidation cycle reaction pathway.

关键词： Glycerol oxidation reaction(GOR) Hydrogen evolution reaction(HER) CuO Oxidative reconstruction Electronic modification

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Jejunal cavernous lymphangioma manifested as gastrointestinal bleeding with hypogammaglobulinemia in adult: A case report and literature review

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World Journal of Clinical Cases 2020年第1期8卷 140-148页

作者： Bei Tan sheng-yu zhang Yi-Nan Wang yuan Li Xiao-Hua Shi Jia-Ming Qian Department of Gastroenterology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Department of Obstetrics and Gynecology Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China Department of Pathology Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China

BACKGROUND Lymphangioma is a benign lesion that rarely involves the gastrointestinal tract,especially in *** bowel lymphangioma is a rare cause of gastrointestinal ***,we report a case of an adult diagnosed with jejunal lymphangioma presenting with melena,anemia and *** also summarize and analyze all 23 reported cases from 1961 to 2019,and propose an algorithm for identification and management of small bowel *** SUMMARY A case of a 29-year-old woman presented with persistent melena and irondeficiency anemia,accompanied by *** lesions were found in the initial workup with esophagogastroduodenoscopy,colonoscopy and computed tomography(CT)***,capsule endoscopy and double-balloon enteroscopy revealed a 3 cm×2 cm primary lesion with intensive white lymphatic dilatatory changes and visible fresh blood stains,accompanied by a small satellite *** patient underwent complete surgical resection of these lesions,and histopathological examination confirmed a diagnosis of cavernous lymphangioma of the *** patient showed no evidence of disease at the time of this *** We recommend CT,capsule endoscopy and enteroscopy to identify the lesions of *** surgery with histological diagnosis is an ideal curative method.

关键词： Anemia Case report Gastrointestinal bleeding Hypogammaglobulinemia Jejunum Lymphangioma

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Diabetes mellitus in patients with type 1 autoimmune pancreatitis at diagnosis and after corticosteroid therapy

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 393-398页

作者： Mei-Zi Li Tao Guo yun-Lu Feng sheng-yu zhang Xiao-Yin Bai Xi Wu Kai Xu Ai-Ming Yang Department of Gastroenterology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalPeking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China Department of Radiology Peking Union Medical College HospitalPeking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China

Background:A high prevalence of diabetes mellitus(DM)coexisting with autoimmune pancreatitis(AIP)is ***,evidence on the circumstances under which corticosteroid therapy(CST)for AIP improves or worsens DM is *** study aimed to demonstrate and identify predictors of DM control under the influence of ***:Patients diagnosed with type 1 AIP were enrolled from a prospectively maintained cohort and were classified into three groups according to the chronology in which AIP and DM were diagnosed:pre-existing DM(pDM),concurrent DM(cDM),and non-DM(nDM).The responses of DM to CST were assessed when corticosteroid was ceased or tapered to a maintenance dose and classified as‘improvement’and‘non-improvement’(including‘no change’and‘exacerbation’).Results:Among 101 patients with type 1 AIP,52(51.5%)patients were complicated with DM at the time of AIP diagnosis,with 36 patients in the cDM group and 16 patients in the pDM *** incidences of diffuse pancreatic swelling(72.2%)and pancreatic body/tail involvement(91.7%)were significantly higher in the cDM group than in both the pDM and nDM *** the 52 patients with DM,CST was administered in 48 *** logistic analysis identified that elevated serum gamma-glutamyl transferase(GGT)level at AIP diagnosis[odds ratio(OR)=0.032,95%confidence interval(CI):0.003-0.412,P=0.008]and pancreatic atrophy after CST(OR=0.027,95%CI:0.003-0.295,P=0.003)were negatively associated with DM control ***:Patients with diffuse pancreatic swelling and pancreatic body/tail involvement in pancreatitis tended to be complicated with cDM at AIP *** exerted a beneficial effect on the clinical course of DM in nearly half of the AIP patients complicated with DM at diagnosis,particularly in those without elevated serum GGT levels at diagnosis and who did not experience pancreatic atrophy after CST.

关键词： Type 1 autoimmune pancreatitis Diabetes mellitus Corticosteroid therapy Predictive factor Pancreatic atrophy

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Clinical manifestations,diagnosis and long-term prognosis of adult autoimmune enteropathy:Experience from Peking Union Medical College Hospital

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World Journal of Gastroenterology 2024年第19期30卷 2523-2537页

作者： Mu-Han Li Ge-Chong Ruan Wei-Xun Zhou Xiao-Qing Li sheng-yu zhang Yang Chen Xiao-Yin Bai Hong Yang yu-Jie zhang Peng-yu Zhao Ji Li Jing-Nan Li Department of Gastroenterology Chinese Academy of Medical Sciences&Peking Union Medical College HospitalBeijing 100730China Department of Pathology Chinese Academy of Medical Scinences&Peking Union Medical College HospitalBeijing 100730China Department of Pathology Tianjin First Central HospitalNankai UniversityTianjin 300192China Affairs Office Chinese Academy of Medical Sciences&Peking Union Medical College Hospital(West campus)Beijing 100032China

BACKGROUND Autoimmune enteropathy(AIE)is a rare disease whose diagnosis and long-term prognosis remain challenging,especially for adult AIE *** To improve overall understanding of this disease’s diagnosis and *** We retrospectively analyzed the clinical,endoscopic and histopathological characteristics and prognoses of 16 adult AIE patients in our tertiary medical center between 2011 and 2023,whose diagnosis was based on the 2007 diagnostic *** Diarrhea in AIE patients was characterized by secretory *** common endoscopic manifestations were edema,villous blunting and mucosal hyperemia in the duodenum and *** blunting(100%),deep crypt lymphocytic infiltration(67%),apoptotic bodies(50%),and mild intraepithelial lymphocytosis(69%)were observed in the duodenal ***,there were other remarkable abnormalities,including reduced or absent goblet cells(duodenum 94%,ileum 62%),reduced or absent Paneth cells(duodenum 94%,ileum 69%)and neutrophil infiltration(duodenum 100%,ileum 69%).Our patients also fulfilled the 2018 diagnostic criteria but did not match the 2022 diagnostic criteria due to undetectable anti-enterocyte *** patients received glucocorticoid therapy as the initial medication,of which 14/16 patients achieved a clinical response in 5(IQR:3-20)*** were administered to 9 patients with indications of steroid dependence(6/9),steroid refractory status(2/9),or intensified maintenance medication(1/9).During the median of 20.5 months of followup,2 patients died from multiple organ failure,and 1 was diagnosed with non-Hodgkin’s *** cumulative relapse-free survival rates were 62.5%,55.6%and 37.0%at 6 months,12 months and 48 months,*** Certain histopathological findings,including a decrease or disappearance of goblet and Paneth cells in intestinal biopsies,might be potential diagnostic criteria for adult *** long-term prognosis is still unsatisfac

关键词： Autoimmune enteropathy Clinical manifestations Diagnostic criteria Pathological features Long-term prognosis

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Spontaneous gallbladder perforation and colon fistula in hypertriglyceridemia-related severe acute pancreatitis:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5846-5853页

作者： Qi-Pu Wang Yi-Jun Chen Mei-Xing Sun Jia-yuan Dai Jian Cao Qiang Xu Guan-Nan zhang sheng-yu zhang Department of Gastroenterology Peking Union Medical College HospitalBeijing 100730China School of Medicine Tsinghua UniversityBeijing 100084China Department of Emergency Medicine Peking Union Medical College HospitalBeijing 100730China Department of Radiology Peking Union Medical College HospitalBeijing 100730China Department of General Surgery Peking Union Medical College HospitalBeijing 100730China

BACKGROUND Gallbladder perforation and gastrointestinal fistula are rare but serious complications of severe acute pancreatitis(SAP).However,neither spontaneous gallbladder perforation nor cholecysto-colonic fistula has been reported in acalculous acute pancreatitis *** SUMMARY A 31-year-old male presenting with epigastric pain was diagnosed with hypertriglyceridemia-related *** suffered from multiorgan failure and was able to leave the intensive care unit on day *** percutaneous drainage tubes were placed for profound exudation in the peripancreatic region and left paracolic *** developed spontaneous gallbladder perforation with symptoms of fever and right upper quadrant pain 1 mo after SAP onset and was stabilized by percutaneous *** infection appeared 1 mo later and was treated with antibiotics but without satisfactory *** multiple colon fistulas,including a cholecysto-colonic fistula and a descending colon fistula,emerged 3 mo after the onset of ***-assisted peripancreatic debridement and ileostomy were carried out *** fistulas achieved spontaneous closure 7 mo later,and the patient recovered after cholecystectomy and ileostomy *** presume that the causes of gallbladder perforation are poor bile drainage due to external pressure,pancreatic enzyme erosion,and *** possible causes of colon fistulas are pancreatic enzymes or infected necrosis erosion,ischemia,and iatrogenic *** to our experience,localized gallbladder perforation can be stabilized by percutaneous *** debridement and proximal colostomy followed by cholecystectomy are feasible and valid treatment options for cholecysto-colonic *** Gallbladder perforation and cholecysto-colonic fistula should be considered in acalculous SAP patients.

关键词： Acalculous severe acute pancreatitis Gallbladder perforation Cholecysto-colonic fistula Percutaneous drainage Cholecystectomy Case report

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Steroid hormone 20-hydroxyecdysone disturbs fat body lipid metabolism and negatively regulates gluconeogenesis in Hyphantria cunea larvae

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Insect Science 2023年第3期30卷 771-788页

作者： sheng-yu zhang Han Gao Ankarjan Askar Xing-Peng Li Guo-Cai zhang Tian-Zhong Jing Hang Zou Hao Guan yun-He Zhao Chuan-Shan Zou School of Forestry Northeast Forestry UniversityHarbinChina Beiua University JilinChia

The steroid hormone 20-hydroxyecdysone(20E)has been described to regulate fat body lipid metabolism in insects,but its accurate regulatory mechanism,especially the crosstalk between 20E-induced lipid metabolism and gluconeogenesis remains largely ***,we specially investigated the effect of 20E on lipid metabolism and gluconeogenesis in the fat body of Hyphantria cunea larvae,a notorious pest in *** analysis showed that a total of 1907 lipid species were identified in the fat body of *** larvae assigned to 6 groups and 48 lipid *** differentially abundant lipids analysis showed a significant difference between 20E-treated and control samples,indicating that 20E caused a remarkable alteration of lipidomics profiles in the fat body of *** *** studies demonstrated that 20E accelerated fatty acidβ-oxidation,inhibited lipid synthesis,and promoted ***,the activities of pyruvate carboxylase,phosphoenolpyruvate carboxykinase,fructose-1,6-bisphosphatase,and glucose-6-phosphatase were dramatically suppressed by 20E in the fat body of *** *** well,the transcriptions of genes encoding these 4 rate-limiting gluconeogenic enzymes were significantly downregulated in the fat body of *** larvae after treatment with *** together,our results revealed that 20E disturbed fat body lipid homeostasis,accelerated fatty acidβ-oxidation and promoted lipolysis,but negatively regulated gluconeogenesis in *** *** findings might provide a new insight into hormonal regulation of glucose and lipid metabolism in insect fat body.

关键词： 20-hydroxyecdysone Hyphantria cunea fat body lipidomics analysis lipid metabolism gluconeogenesis

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Percutaneous aspiration and sclerotherapy of a giant simple hepatic cyst causing obstructive jaundice:A case report and review of literature

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World Journal of Gastrointestinal Surgery 2022年第7期14卷 706-713页

作者： Xu-Xia He Mei-Xing Sun Ke Lv Jian Cao sheng-yu zhang Jing-Nan Li Department of Gastroenterology Peking Union Medical College HospitalBeijing 10000China Department of Ultrasound Peking Union Medical College HospitalBeijing 10000China Department of Radiology Peking Union Medical College HospitalBeijing 10000China

BACKGROUND Giant simple hepatic cysts causing intrahepatic duct dilatation and obstructive jaundice are uncommon.A variety of measures with different clinical efficacies and invasiveness have been *** management,such as percutaneous aspiration and sclerotherapy,is often *** SUMMARY The case is a 39-year-old female with a 5-mo history of cutaneous and scleral icterus,loss of appetite,and dark *** tests showed jaundice and liver function *** revealed a giant simple hepatic cyst obstructing the intrahepatic bile ducts.A combination of percutaneous catheter aspiration and lauromacrogol sclerotherapy was successfully performed and the effects were satisfactory with the size of cyst decreasing from 13.7 cm×13.1 cm to 3.0 cm×3.0 *** literature review presented the challenges of managing giant simple hepatic cysts that cause obstructive jaundice and compared the safety and efficacy of a combination of percutaneous aspiration and lauromacrogol sclerotherapy with other management *** Giant simple hepatic cysts can cause obstructive jaundice,and a combination of percutaneous catheter aspiration and sclerotherapy with lauromacrogol are suggested to treat such cases.

关键词： Simple hepatic cyst Obstructive jaundice Aspiration Sclerotherapy Lauromacrogol Case report

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