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国外核聚变与等离子体应用 1990年第1期 54-60页

作者： hoff.,dj 鄙玉

Gastric fundoplication with endoscopic technique:A novel approach for gastroesophageal reflux disease treatment

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World Journal of Gastrointestinal Endoscopy 2024年第10期16卷 557-565页

作者： Eyad Gadour Anna Carolina hoff Department of Gastroenterology and Hepatology King Abdulaziz Hospital-National GuardAhsa 31982Saudi Arabia Internal Medicine Zamzam University CollegeSchool of MedicineKhartoum 11113Sudan Bariatric Endoscopy Angioskope ClinicSão Josédos Campos 12243-680São PauloBrazil

BACKGROUND Gastric fundoplication with endoscopic technique(GFET)is an innovative approach to managing gastroesophageal reflux disease(GERD).This minimally invasive procedure utilizes the GEN-2 Apollo endosuture device and Olympus H2T180 gastroscope to perform partial fundoplication by strategically placing Prolene 2-0 sutures at the 11,7,5,1,and 3 o’clock positions around the gastroesophageal *** To evaluate whether GFET enhances the lower esophageal sphincter function by creating comprehensive plication to improve the barrier against *** This single-center prospective study included patients undergoing *** beginning GFET,pH metrics and subsequent manometric measurements were *** analysis of variance was performed to determine statistically significant differences between quality of life(QOL)and DeMeester scores at the time of the procedure and 6 and 12 months ***’sχ2 test was performed to identify statistically significant differences between categorical variables at the time of the procedure and 6 and 12 months *** Eighteen participants were enrolled(11 males and 7 females;mean age,35 years).More than 70%had an initial Hill grade of *** adverse event was recorded after the *** patient underwent valve reinforcement at 12 *** mean QOL score was markedly higher at the time of the procedure(39.9±4.0)compared to those at 6 and 12 months postoperatively(P<0.001).Scores at 12 months were slightly higher than those at 6 *** highest mean QOL score was observed at the time of the procedure,followed by those at 6 and 12 months postoperatively(P<0.001).A similar trend was noted for the mean DeMeester scores(P<0.001).CONCLUSION GFET is a minimally invasive alternative to traditional surgical interventions and endoscopic techniques for managing *** research is warranted to validate its long-term efficacy and effectiveness over existing treatments.

关键词： Gastric fundoplication with endoscopic technique Gastroesophageal reflux disease Therapeutic endoscopy

Templated synthesis of transition metal phosphide electrocatalysts for oxygen and hydrogen evolution reactions

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Journal of Energy Chemistry 2024年第2期89卷 646-669,I0014页

作者： Rose Anne Acedera Alicia Theresse Dumlao dj Donn Matienzo Maricor Divinagracia Julie Anne del Rosario Paraggua Po-Ya Abel Chuang Joey Ocon Laboratory of Electrochemical Engineering(LEE) Department of Chemical EngineeringUniversity of the PhilippinesDilimanQuezon City 1101Philippines Mechanical Engineering University of CaliforniaMercedCA 95343USA Energy Engineering Program College of EngineeringUniversity of the PhilippinesDilimanQuezon City 1101Philippines

Transition metal phosphides(TMPs)have been regarded as alternative hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalysts owing to their comparable activity to those of noble metal-based *** have been produced in various morphologies,including hollow and porous nanostructures,which are features deemed desirable for electrocatalytic *** synthesis routes are often responsible for such *** paper reviews the latest advances and existing challenges in the synthesis of TMP-based OER and HER catalysts through templated methods.A comprehensive review of the structure-property-performance of TMP-based HER and OER catalysts prepared using different templates is *** discussion proceeds according to application,first by HER and further divided among the types of templates used-from hard templates,sacrificial templates,and soft templates to the emerging dynamic hydrogen bubble *** catalysts are then reviewed and grouped according to their ***,prospective research directions for the synthesis of hollow and porous TMP-based catalysts,such as improvements on both activity and stability of TMPs,design of environmentally benign templates and processes,and analysis of the reaction mechanism through advanced material characterization techniques and theoretical calculations,are suggested.

关键词： OER HER Transition metal phosphide Templated synthesis Electrocatalysts

Constipation and colonoscopy

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World Journal of Gastrointestinal Endoscopy 2024年第5期16卷 244-249页

作者： Dusan dj Popovic Branka Filipovic Faculty of Medicine University of BelgradeBelgrade 11000Serbia Department of Gastroenterology and Hepatology Clinic for Internal MedicineUniversity Clinical Hospital Center“Dr.Dragisa Misovic-Dedinje”Belgrade 11000Serbia

Constipation is a significant sociomedical problem,which can be caused by various *** the diagnostic approach to patients with constipation,the following data are usually sufficient:History,complete physical examination(including rectal examination),and additional diagnostic tests.A colonoscopy is not a necessary diagnostic method for all patients with ***,if patients have alarm symptoms/signs,that suggest an organic reason for constipation,a colonoscopy is *** most important alarm symptoms/signs are age>50 years,gastrointestinal bleeding,new-onset constipation,a palpable mass in the abdomen and rectum,weight loss,anemia,inflammatory bowel disease,and family history positive for colorectal *** endoscopists do not like to deal with patients with *** are two reasons for this,namely the difficulty of endoscopy and the adequacy of *** are adversely affected by *** improve the quality of colonoscopy in these patients,good examination techniques and often more extensive preparation are *** colonoscopy technique implies adequate psychological preparation of the patient,careful insertion of the endoscope with minimal insufflation,and early detection and resolution of *** preparation for colonoscopy often requires prolonged preparation and sometimes the addition of other laxatives.

关键词： Constipation Functional constipation Colonoscopy Bowel preparation Polyethylene glycol

ON VOLUME VISCOSITY AND ACOUSTIC DISPERSION PHENOMENA

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中国物理学报 1951年第1期 5-13页

作者： hoff. LU Physics Department Chckiang Univcrsity Hangchow

Our bulk-visco-elastic theory is extended to the case,as recently discovered in ultrasonic absorptionmeasurements,in which there are present more than one relaxation *** multi-relaxationaltheory is applied to the study of acoustic dispersion *** bearing of our relaxationaltheory in general on classical hydrodynamics is further *** calculations fromcertain available experimental data are given and their indications discussed.

关键词： ON VOLUME VISCOSITY AND ACOUSTIC DISPERSION PHENOMENA

Evaluation of the Level of Pollution by Heavy Metals of Market Garden Soils along the Chari River in Ndjamena: Case of the 9th and 7th Districts

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Agricultural Sciences 2024年第8期15卷 939-961页

作者： Kotva Wana Mackaye Hassane Taisso Likius Andossa Béral djétenbé Laboratoire Gosciences Dpartement des Sciences de la Terre Facult des Sciences Universit de NDjamena NDjamena Chad Laboratoire Gosciences Dpartement des Sciences de la Terre Facult des Sciences Universit de Mongo Mongo Chad Laboratoire Sol et Environnement (LASEN) Dpartement des Sciences de la Terre Facult des Sciences Universit de Ngaoundr Ngaoundr Cameroun

The main aim of this study was to characterize the metal content of soils used for market gardening along the Chari river: the 7th and 9th districts of Ndjaména. To achieve this, two sites were selected: Gassi and Walia, and two control sites (Gassi and Walia). A total of fifty (50) soil samples were taken (24 from the Gassi site, 24 from the Walia site and 2 as control soils) and then analyzed to determine a number of physico-chemical parameters (pH, OM and electrical conductivity) and heavy metal concentrations in the various soils. The TME content (As, Cd, Cu, Cr, Ni, Pb, Hg and Zn) of the soils was determined by plasma-coupled Atomic Emission Spectrometry. In order to assess the level of contamination in Gassi and Walia soils, the geoaccumulation index (GeoIndex), contamination factor and degree of contamination were calculated. Results for physico-chemical parameters revealed that pH ranged from acidic (4.6) to moderately neutral (6.5), electrical conductivity was higher in cultivated soils (mean 292.14 μs/cm) than in control soils (mean 149.33 μs/cm), and soils were rich in organic matter. Overall, heavy metal concentrations in cultivated soils were higher than in control soils. The pollution estimate shows that soils in the area have no moderate contamination. The increase in TME concentrations in cultivated soils is thought to be due to the input of agricultural inputs to the soil. However, these levels are below the Average shale reference and Canadian guidelines for agricultural soil quality. Principal component analysis shows that metals are positively and significantly correlated with each other, and negatively and moderately significantly correlated with each other.

关键词： Contamination Agricultural Soils City of N’djaména ETM Gassi Walia

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智能聚合物在医药与生物工程中的应用

高分子通报 1995年第4期 245-253页

作者： hoff.,AS 罗毅北京大学化学系

智能聚合物是一类对于外界环境微小的物理和化学刺激，其自身性质会发生明显改变的聚合物。这类聚合物能以各种形式存在，如固体、溶液或吸附于载体表面。水溶性智能聚合物系统与生物分子相结合能够产生一类对物理、化学和生物刺激有响... 详细信息

智能聚合物是一类对于外界环境微小的物理和化学刺激，其自身性质会发生明显改变的聚合物。这类聚合物能以各种形式存在，如固体、溶液或吸附于载体表面。水溶性智能聚合物系统与生物分子相结合能够产生一类对物理、化学和生物刺激有响应的新的聚合物。本文综述了这类聚合物系统的研究进展。

关键词：智能聚合物医药工程生物工程应用聚合物

From strength to precision: A systematic review exploring the clinical utility of 7-Tesla magnetic resonance imaging in abdominal imaging

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World Journal of Radiology 2024年第1期16卷 20-31页

作者： Arosh S Perera Molligoda Arachchige Ana Claudia Teixeira de Castro Gonçalves Ortega Federica Catapano Letterio S Politi Michael N hoff Faculty of Medicine Humanitas UniversityPieve Emanuele 20072MilanItaly Department of Biomedical Sciences Humanitas UniversityPieve Emanuele 20072MilanItaly IRCCS Humanitas Research Hospital Rozzano 20089MilanItaly Department of Neuroradiology IRCCS Humanitas Research HospitalRozzano 20089MilanItaly Department of Radiology and Biomedical Imaging University of CaliforniaSan FranciscoCA 94143United States

BACKGROUND After approval for clinical use in 2017 early investigations of ultra-high-field abdominal magnetic resonance imaging(MRI)have demonstrated the feasibility as well as diagnostic capabilities of liver,kidney,and prostate MRI at ***,the elevation of the field strength to 7-Tesla not only brought advantages to abdominal MRI but also presented considerable challenges and drawbacks,primarily stemming from heightened artifacts and limitations in Specific Absorption Rate,***,evidence in the literature is relatively scarce concerning human studies in comparison to phantom/animal studies which necessitates an investigation into the evidence so far in humans and summarizing all relevant *** To offer a comprehensive overview of current literature on clinical abdominal 7T MRI that emphasizes current trends,details relevant challenges,and provides a concise set of potential *** This systematic review adheres to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.A PubMed search,utilizing Medical Subject Headings terms such as"7-Tesla"and organ-specific terms,was conducted for articles published between January 1,1985,and July 25,*** criteria included studies exploring 7T MRI for imaging human abdominal organs,encompassing various study types(in-vivo/ex-vivo,method development,reviews/meta-analyses).Exclusion criteria involved animal studies and those lacking extractable *** selection involved initial identification via title/abstract,followed by a full-text review by two researchers,with discrepancies resolved through *** extraction covered publication details,study design,population,sample size,7T MRI protocol,image characteristics,endpoints,and *** The systematic review included a total of 21 *** distribution of clinical 7T abdominal imaging studies revealed a predominant focus on the prostate(n=8),followed by the kidney(n=6)and the hepato

关键词： 7-Tesla magnetic resonance imaging Abdominal Prostate Kidney Renal Pancreas Hepatobiliary Liver Small bowel