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Large non-pedunculated colorectal polyp management: The elephant in the room

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World Journal of Gastroenterology 2024年第25期30卷 3126-3131页

作者： Shirley X Jiang Neal Shahidi Department of Medicine University of British ColumbiaVancouver V6Z 2K5BCCanada

Minimally invasive innovations have transformed *** to colorectal cancer(CRC),there has been a shift towards less invasive surgical techniques and use of endoscopic resection as an alternative for low risk T1 *** role of endoscopic resection is however much more extensive:It is now considered the first line management strategy for most large(≥20 mm)non-pedunculated colorectal polyps,the majority of which are *** is due to the well-established efficacy,safety,and cost-effectiveness of endoscopic techniques compared to *** endoscopic modalities now exist with distinct risk-benefit profiles and their outcomes are further improved by site-specific technical modifications,auxiliary techniques,and adverse event miti-gation *** capacity continues to evolve with emerging endoscopic techniques and expanding applications,particularly in the confines of a multi-disciplinary setting.

关键词： Cancer Colonoscopy Endoscopy Polyp Endoscopic mucosal resection Endoscopic submucosal dissection

Gastric cystica profunda:Another indication for minimally invasive endoscopic resection techniques?

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World Journal of Gastroenterology 2024年第27期30卷 3278-3283页

作者： Harjot k Bedi Douglas Motomura Neal Shahidi Department of Medicine University of British ColumbiaVancouver V6Z 2K5BCCanada

Gastric cancer presents a significant global health burden,as it is the fifth most common malignancy and fourth leading cause of cancer mortality *** in incidence rates across regions underscores the multifactorial etiology of this *** overall 5-year survival rate remains low despite advances in its diagnosis and *** surgical gastrectomy was previously standard-of-care,endoscopic resection techniques,including endoscopic mucosal resection and endoscopic submucosal dissection(ESD)have emerged as effective alternatives for early *** to surgical resection,endoscopic resection techniques have comparable 5-year survival rates,reduced treatment-related adverse events,shorter hospital stays and lower *** also enables en bloc resection,thus affording organ-sparing curative endoscopic resection for early *** this editorial,we comment on the recent publication by Geng et al regarding gastric cystica profunda(GCP).GCP is a rare gastric pseudotumour with the potential for malignant *** presents a diagnostic challenge due to its nonspecific clinical manifestations and varied endoscopic *** are several gaps in the literature regarding the diagnosis and management of GCP which warrants further research to standardize patient *** in endoscopic resection techniques offer promising avenues for GCP and early gastric cancers.

关键词： Early gastric cancer Endoscopy Endoscopic submucosal dissection Gastric cystica profunda

Double-nylon purse-string suture technique: Another addition to the endoscopist's toolbox for full-thickness defect closure

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World Journal of Gastroenterology 2024年第25期30卷 3152-3154页

作者： Angad Walia Roberto Paolo Trasolini Neal Shahidi Department of Medicine University of British ColumbiaVancouver V6Z2K5BCCanada

Iatrogenic perforation is the most feared adverse event in *** the expansion of interventional endoscopy in favor of traditional surgery,it is now more crucial than ever to develop effective defect closure *** has culminated in the dissemination of multiple novel closure technologies,including through-the-scope clips,over-the-scope clips,through-the-scope suturing and over-the-scope suturing *** this editorial,we comment on the recent publication by Wang and colleagues discussing the performance of the double-nylon purse-string suture technique in the closure of large(>3 cm)gastric full-thickness *** technique offers a promising,practical and cost-effective approach to closure of large full-thickness defects that can be readily imple-mented across diverse healthcare settings.

关键词： Cancer Endoscopy Endoscopic full-thickness resection Perforation

Quantum correlations and entanglement in coupled optomechanical resonators with photon hopping via Gaussian interferometric power analysis

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Chinese Physics B 2024年第5期33卷 204-211页

作者： Y.Lahlou B.Maroufi M.Daoud LPHE-MS Department of PhysicsFaculty of SciencesMohammed V UniversityRabatMorocco LPMS Department of PhysicsFaculty of SciencesIbn Tofail UniversityKénitraMorocco

Quantum correlations that surpass entanglement are of great importance in the realms of quantum information processing and quantum ***,for quantum systems prepared in pure states,it is difficult to differentiate between quantum entanglement and quantum ***,this indistinguishability is no longer holds for mixed *** contribute to a better understanding of this differentiation,we have explored a simple model for both generating and measuring these quantum *** study concerns two macroscopic mechanical resonators placed in separate Fabry–Pérot cavities,coupled through the photon hopping *** system offers a comprehensively way to investigate and quantify quantum correlations beyond entanglement between these mechanical *** key ingredient in analyzing quantum correlation in this system is the global covariance *** forms the basis for computing two essential metrics:the logarithmic negativity(E_(N)^(m))and the Gaussian interferometric power(P_(G)^(m)).These metrics provide the tools to measure the degree of quantum entanglement and quantum correlations,*** study reveals that the Gaussian interferometric power(P_(G)^(m))proves to be a more suitable metric for characterizing quantum correlations among the mechanical modes in an optomechanical quantum system,particularly in scenarios featuring resilient photon hopping.

关键词： quantum correlations entanglement Gaussian interferometric power logarithmic negativity optomechanics photon hopping

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Exploring Capillary Fringe Flow:Quasilinear Modeling with kirchhoff Transforms and Gardner Model

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Fluid Dynamics & Materials Processing 2024年第7期20卷 1611-1631页

作者： Rachid karra Abdelatif Maslouhi LASTIMI laboratory Mohammadia School of EngineersMohammed V University in RabatRabatMorocco LIRNE laboratory Faculty of SciencesIbn Tofail UniversityKenitraMorocco

Recent studies have underscored the significance of the capillary fringe in hydrological and biochemical ***,its role in shallow waters is expected to be ***,the study of groundwater flow has centered on unsaturated-saturated zones,often overlooking the impact of the capillary *** this study,we introduce a steady-state two-dimensional model that integrates the capillary fringe into a 2-D numerical *** novel approach employs the potential form of the Richards equation,facilitating the determination of boundaries,pressures,and velocities across different ground surface *** utilized a two-dimensional Freefem++finite element model to compute the stationary *** validation of the model was conducted using experimental *** employed the OFAT(One_Factor-At-Time)method to identify the most sensitive soil parameters and understand how changes in these parameters may affect the behavior and water dynamics of the capillary *** results emphasize the role of hydraulic conductivity as a key parameter influencing capillary fringe shape and *** values within the capillary fringe suggest the prevalence of horizontal *** variation of the water table level and the incoming flow q0,we have shown the correlation between water table elevation and the upper limit of the capillary fringe.

关键词： Capillary fringe Freefem++ gardner model modeling porous media

Lithium-ion and solvent co-intercalation enhancing the energy density of fluorinated graphene cathode

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Journal of Energy Chemistry 2024年第2期89卷 208-215,I0006页

作者： Hao Wang Jie Jiang Pengyu Chen Zhenrui Wu Xiaobin Niu Chuying Ouyang Jian Liu Liping Wang School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of Engineering Faculty of Applied ScienceThe University of British ColumbiaKelowna V1V 1V7Canada 21C Innovation laboratory Contemporary Amperex Technology Ltd.(21C LAB)Ningde 352100FujianChina

Fluorinated carbons CF_xhold the highest theoretical energy density(e.g.,2180 W h kg^(-1)when x=1)among all cathode materials of lithium primary ***,the low conductivity and severe polarization limit it to achieve its *** this study,we design a new electrolyte,namely 1 M LiBF_(4)DMSO:DOL(1:9 vol.),achieving a high energy density in Li/CF_xprimary *** DMSO with a small molecular size and high donor number successfully solvates Li^(+)into a defined Li^(+)-solvation *** solvated Li^(+)can intercalate into the large-spacing carbon layers and achieve an improved ***,when discharged to 1.0 v,the CF_(1.12)cathode demonstrates a specific capacity of 1944 m A h g^(-1)with a specific energy density of 3793 W h kg^(-1).This strategy demonstrates that designing the electrolyte is powerful in improving the electrochemical performance of CF_(x) cathode.

关键词： Fluorinated carbon Conversion reaction High-energy-density primary battery Li^(+)-solvation structure Solvent co-intercalation

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Radiation protection knowledge and practices among Moroccan dentists:A cross-sectional study

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Radiation Medicine and Protection 2024年第2期5卷 131-138页

作者： Naoual Elmorabit Majdouline Obtel Mohamed Azougagh Oumkeltoum Ennibi laboratory of Research on Oral Biology and Biotechnology Faculty of Dental MedicineMohammed V UniversityRabatMorocco Department of Public Health Faculty of Medicine and PharmacyMohammed V UniversityRabatMorocco National Graduate of Arts and Crafts(ENSAM) Mohammed V UniversityRabatMorocco

Objective:To analyze the current status of knowledge and practices among the Moroccan dentists in the region of Rabat-Sale-kenitra,towards radiation ***:This is a cross-sectional study based on a questionnaire related to knowledge and practice regarding radiation protection of patients and dental staff from April to June *** study sample included 325 dentists practicing in the Rabat-Sale-kenitra *** target population consisted of all dentists working in public,semipublic and private ***:96.6%of dentists were aware of radiation ***,nearly 35%were aware of ALARA(as low as reasonably achievable)principle and 73.9%thought that dental X-rays are harmful.63.6%of subjects used digital image *** 16.7%of them used a film holder and more than 60%didn't follow the position and distance *** median knowledge score was 7[5,9],and there was a statistically significant difference according to dentist qualification(P=0.007),dental radiation protection continuous training(Pkplace setting(P=0.001).There was a significant positive relationship between knowledge score and practice score(r=0.24,Pknowledge,while workplace setting(OR 0.54,95%CI:0.32–0.93,P=0.027)and knowledge score(OR 1.24,95%CI:1.12–1.38,Pving dentists'knowledge of radiation protection measures and tools as well as dose reduction techniques could increase their safe practices in dental radiology.

关键词： Dentists Radiation protection Awareness Dental radiography

Alkali-resistant NO_(x) reduction over FevO_(4)/TiO_(2)catalysts via regulating the electron transfer between Fe and v

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Chinese Chemical Letters 2024年第2期35卷 489-495页

作者： Yunang Dong Penglu Wang Xiangyu Liu Jiang Deng Aling Chen Lupeng Han Dengsong Zhang International Joint laboratory of Catalytic Chemistry State Key Laboratory of Advanced Special SteelCollege of SciencesShanghai UniversityShanghai 200444China

The presence of alkali metals in exhaust gas from stationary resources causes a grand challenge for the practical application of selective catalytic reduction(SCR)of NO_(x) with NH_(3).Here,alkali-resistant NO_(x) reduction has been successfully implemented via tailoring the electron transfer over Fe and v species on FevO_(4)/TiO_(2)*** strong interaction between Fe and v induced electron transfer from v to Fe and strengthened the adsorption and activation of NH_(3)and NO over active vO_(x) *** the presence of k_(2)O,the strong electron withdrawing effect of Fe offset the electron donating effect of k on the vO_(x) species,thus protecting the active species vO_(x) to maintain the NO_(x) reduction *** enhanced adsorption and activation of NH_(3) allowed SCR reaction to proceed via E-R mechanism even after k_(2)O *** work elucidated the electronic effects on the alkali metals resistance of traditional ferric vanadate SCR catalysts and provided a promising strategy to design SCR catalysts with superior alkali resistance.

关键词： Air pollution control NO_(X)reduction Selective catalytic reduction Alkali metals Electron transfer

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Angular and planar transport properties of antiferromagnetic v5S8

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Chinese Physics B 2024年第2期33卷 83-88页

作者：吴晓凯王彬吴德桐陈博文弭孟娟王以林沈冰 Center for Neutron Science and Technology and School of Physics Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devicesand Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-Sen University School of Integrated Circuits Shandong Technology Center of Nanodevices and Integration State Key Laboratory of Crystal MaterialsShandong University

Systemically angular and planar transport investigations are performed in layered antiferromagnetic(AF) v5S8. In this AF system, obvious anomalous Hall effect(AHE) is observed with a large Hall angle of 0.1 compared to that in ferromagnetic(FM) system. It can persist to the temperatures above AF transition and exhibit strong angular field *** phase diagram reveals various magnetic states by rotating the applied field. By analyzing the anisotropic transport behavior, magnon contributions are revealed and exhibit obvious angular dependence with a spin-flop vanishing line. The observed prominent planar Hall effect and anisotropic magnetoresisitivity exhibit two-fold systematical angular dependent oscillations. These behaviors are attributed to the scattering from spin–orbital coupling instead of nontrivial topological origin. Our results reveal anisotropic interactions of magnetism and electron in v5S8, suggesting potential opportunities for the AF spintronic sensor and devices.

关键词： antiferromagnetism planar Hall effect magnetic and topological properties