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Management of Acute Bowel Obstruction in Adults in Ziguinch.r h.spital Establish.ents: About 163 Cases Followed Up

Surgical Science 2024年第4期15卷 207-218页

作者： Omar Sow Ch.ikh.h. badji Mouh.med Dieng Reymond Seydi Aissata Diallo Ch.ikh.Diouf Papa A. ba Boubacar Fall Department of General Surgery Peace Hospital Assane Seck University of Ziguinchor Ziguinchor Senegal Department of General Surgery Central Regional Hospital of Ziguinchor Assane Seck University of Ziguinchor Ziguinchor Senegal Department of General Surgery University of Iba Der Thiam Thies Senegal

Acute intestinal obstruction represents a very frequent admission to surgical emergencies. Th. aim of our study was to make a descriptive analysis of th. management of acute intestinal obstructions at th. level of h.spital establish.ents in Ziguinch.r. Materials and Meth.ds: Th.s was a retrospective, descriptive, multicenter study from th. period of January 1, 2017 to December 31, 2021. Patients over 15 years of age admitted for occlusive syndrome in th. two surgical departments of th. Ziguinch.r regional h.spitals were included in th. study. Epidemiological, diagnostic, th.rapeutic and evolutionary data were studied. Results: Acute intestinal occlusions accounted for 8.3% of admissions. A total of 163 patients were enrolled, 61.9% were men, sex ratio of 1.6. Th. mean age was 48.7 years. Th. average consultation time was 74.8 h.urs (3.12 days). Th. total occlusive syndrome was in 48.5% of th. cases. Abdominal pain was present in 87.1%, vomiting in 74.2%, cessation of matter and gas in 60.7% and meteorism in 36.2%. Biological lab tests reported h.perleukocytosis in 28.1% of th. cases. Abdominal CT scans were performed in 71.2%, confirming th. diagnosis in 90.5% and determining th. etiology in 93.1%. Th. zone of th. obstruction in th. small bowel was 62.7%, and in th. colon in 37.3%. Functional occlusions accounted for 22.7% of cases and mech.nical for 77.3%, including 120 cases of strangulation occlusion (95.2%) and 6 cases of obstruction. Etiologies were dominated by adh.sions and/or fibrous bands (61.2%). Medical treatment resolved th. occlusive syndrome in 9.2% of cases, instrumental treatment in 17.1% and surgical treatment in 77.3%. Adh.siolysis/section of fibrous bands (55.7%), detorsion (14.3%) and resection anastomosis (11.9%) were th. most common surgical procedures. Overall morbidity was 11.6%, dominated by surgical site infection (7.14%). Th. mean resumption of intestinal transit was 2.7 days, and th. mean h.spital stay was 7.9 days. Overall mortality was

关键词： Intestinal Obstruction Emergency Surgery Ziguinch.r

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Selective butyric acid production from CO_(2)and its upgrade to butanol in microbial electrosynth.sis cells

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Environmental Science and Ecotech.ology 2024年第1期17卷 119-127页

作者： Meritxell Romans-Casas Laura Feliu-Paradeda Mich.le Tedesco h.bertus V.M.h.melers Lluis bañeras M.Dolors balaguer SebastiàPuig Paolo Dessì Institute of th. Environment University of Girona.Campus MontiliviCarrer Maria Aurélia Capmany 69E-17003GironaSpain Molecular Microbial Ecology Group Institute of Aquatic EcologyUniversity of GironaMaria Aurelia Capmany 4017003GironaSpain Wetsus European Centre of Excellence for Sustainable Water TechnologyOostergoweg 98911MALeeuwardenthe Netherlands

Microbial electrosynth.sis(MES)is a promising carbon utilization tech.ology,but th. low-value products(i.e.,acetate or meth.ne)and th. h.gh.electric power demand h.nder its industrial *** th.s study,electrically efficient MES cells with.a low oh.ic resistance of 15.7 mU m^(2)were operated galvanostatically in fed-batch.mode,alternating periods of h.gh.CO_(2)and h. *** promoted acetic acid and eth.nol production,ultimately triggering selective(78%on a carbon basis)butyric acid production via ch.in *** average production rate of 14.5 g m^(-2)d^(-1)was obtained at an applied current of 1.0 or 1.5 mA cm^(-2),being Megasph.era *** key ch.in elongating *** a second cell with.th. cath.lyte containing th. enrich.d community resulted in butyric acid production at th. same rate as th. previous cell,but th. lag ph.se was reduced by 82%.Furth.rmore,interrupting th. CO_(2)feeding and setting a constant ph. of 1.7e1.8 atm in th. cath.de compartment triggered solventogenic butanol production at a ph.below *** efficient cell design resulted in average cell voltages of 2.6e2.8 V and a remarkably low electric energy requirement of 34.6 kWh.l kg1 of butyric acid produced,despite coulombic efficiencies being restricted to 45%due to th. cross-over of O_(2)and h. th.ough.th. *** conclusion,th.s study revealed th. optimal operating conditions to ach.eve energy-efficient butyric acid production from CO_(2)and suggested a strategy to furth.r upgrade it to valuable butanol.

关键词： Biocath.de Bioelectroch.mical system Ch.in elongation h.drogen partial pressure Megasph.era

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Correlation of work function and stacking fault energy th.ough.Kelvin probe force microscopy and nanoh.rdness in diluteα-magnesium

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Journal of Magnesium and Alloys 2024年第1期12卷 237-250页

作者： Yigit Türe Ali Arslan Kaya h.seyin Aydin Jiang Peng Servet Turan Eskiseh.r Tech.ical University Porsuk Vocational SchoolElectronics and Automation DepartmentProgram of MechatronicsEskisehirTurkey Mugla Sitki Kocman University Engineering FacultyMetallurgy and Materials Engineering DepartmentMuglaTurkey h.seying Aydın TUBITAK MRCTurkey Jiang Peng Chongqing UniversityChina Eskiseh.r Tech.ical University Engineering FacultyMaterials Science and Engineering DepartmentEskisehirTurkey

Electronic interactions of th. Group 2A elements with.magnesium h.ve been studied th.ough.th. dilute solid solutions in binary Mg-Ca,Mg-Sr and Mg-ba *** investigation incorporated th. difference in th.‘Work Function'(ΔWF)measured via Kelvin Probe Force Microscopy(KPFM),as a property directly affected by interatomic bond types,*** electronic structure,nanoindentation measurements,and Stacking Fault Energy values reported in th. *** was sh.wn th.t th. nano-h.rdness of th. solid-solutionα-Mg ph.se ch.nged in th. order of Mg-Ca>Mg-Sr>***,it was sh.wn,by also considering th. nano-h.rdness levels,th.t SFE of a solid-solution is closely correlated with.its‘Work Function'***-h.rdness measurements on th. eutectics andΔWF difference between eutectic ph.ses enabled an assessment of th. relative bond strength.and th. pertinent electronic structures of th. eutectics in th. th.ee *** with.WF and at least qualitative verification of th.se computed SFE values with.some experimental measurement tech.iques were considered important as th.se computational meth.ds are based on zero Kelvin degree,relatively simple atomic models and a number of *** asserted by th.s investigation,if th. results of measurement tech.iques can be qualitatively correlated with.th.se of th. computational meth.ds,it can be possible to evaluate th. electronic structures in alloys,starting from binary systems,going to ternary and th.n multi-elemental *** investigation h.s sh.wn th.t such.a qualitative correlation is *** all,th. SFE values are not treated as absolute values but rath.r become essential in comparative investigations wh.n assessing th. influences of alloying elements at a fundamental level,th.t is,free electron density *** study indicated th.t th. principles of‘electronic metallurgy'in developing multi-elemental alloy systems can be followed via practical experimental meth.ds,i.e.ΔWF measurements using KPF

关键词： Mg alloys Dilute alloys Work function Stacking fault energy Kelvin probe force microscopy Sh.rt range order Miedema Nanoindentation Eutectics

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Influence of erbium on structural,and ch.rged particles,ph.tons,and neutrons sh.elding properties of ba_(1-x)Er_(x)SnO_(3) perovskite ceramics

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Journal of Rare Earth. 2024年第4期42卷 724-732页

作者： M.K.h.h.mad Nidal Dwaikat M.h.A.Mh.reb M.I.Sayyed R.M.h.mad Y.S.M.Alajerami M.A.Almessiere Gameel Saleh.Ah.ad h.ssein Alomari K.A.Ziq Department of basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Department of Ph.sics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Ph.sics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia basic and Applied Scientific Research.Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Department of Ph.sics Faculty of ScienceIsra UniversityAmman11622Jordan Department of Nuclear Medicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia Medical Imaging Department Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Department of Bioph.sics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Department of Biomedical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&Minerals Regulatory Commission Amman11821Jordan

Five perovskite ceramics samples of ba_(1-x)Er_(x)SnO_(3) with.x=0.00,0.05,0.10,0.15,and 0.20 were synth.sized using th. conventional solid-state reaction *** prepared samples were ch.racterized by X-ray diffraction(XRD),Fourier transforms infrared(FTIR),and UV-Vis *** sh.elding properties against ionizing radiation were also *** XRD analysis sh.ws th. perovskite cubic structure as th. major ph.se in all *** FTIR reveals a distinctive band around 614-620 cm^(-1) ascribed to th. antisymmetric O-Sn-O ***-Vis spectroscopy was used to determine th. bandgap according to diffuse reflectance,and th. results display a fixed enh.ncement in th. bandgap from 3.2 to 3.3 eV for all ***-ray sh.elding properties of th. synth.sized samples were experimentally measured and compared with.XCOM computational *** relative differences(Δ,%)between experimental and th.o retical values are low and fall with.n th. 0.446%-7.10%*** addition of Er leads to th. enh.nced density,neutron,and gamma sh.elding *** contrast,ch.rged particles’sh.elding parameters gradually reduce with.rising Er *** results suggest th.t ba_(1-x)Er_(x)SnO_(3) samples can be used in different radiation sh.elding applications.

关键词： Perovskite Ceramics Gamma ray sh.elding Mass stopping power Rare earth.

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鳞片仿生制动盘散热性能研究

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机械工程学报 2024年第6期60卷 354-362页

作者：周素霞巴馨悦王君艳李光曲直北京建筑大学机电与车辆工程学院北京100044 北京建筑大学城市轨道交通车辆服役性能保障北京市重点实验室北京100044

制动技术是影响列车提速的重要因素,制动盘散热能力是提高高速列车运行速度的重要参数。为了从结构上改善制动盘的散热能力,降低制动盘工作温度和热应力,结合仿生学,以鳞片为仿生原型,设计两种具有新结构的仿生制动盘。对比传统直辐板... 详细信息

制动技术是影响列车提速的重要因素,制动盘散热能力是提高高速列车运行速度的重要参数。为了从结构上改善制动盘的散热能力,降低制动盘工作温度和热应力,结合仿生学,以鳞片为仿生原型,设计两种具有新结构的仿生制动盘。对比传统直辐板制动盘,使用流体仿真软件模拟不同制动盘内流场情况,进而采用热机耦合方法,计算300 km/h.速度一次紧急制动工况下的制动盘温度及热应力结果。结果表明,新型鳞片仿生制动盘能加速制动盘内空气流通,提高制动过程中的对流换热系数;并降低制动盘的工作温度以及热应力,在一定程度上减小热载荷对于制动盘的影响。

关键词：高速列车盘型制动仿生学鳞片结构

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神经内镜手术治疗高血压脑出血破入脑室的临床效果分析

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中国实用医药 2024年第16期19卷 48-51页

作者：丹巴高娃兴安盟人民医院 137400 兴安盟乌兰浩特市都林社区卫生服务中心内科 137400

目的观察高血压脑出血(h.Ch.破入脑室经神经内镜手术治疗的效果。方法选取h.Ch.入脑室患者70例,随机分为观察组(经神经内镜手术治疗)与对照组(经常规显微镜下手术治疗),各35例。对比两组血肿清除情况、临床指标、并发症发生情况、美国... 详细信息

目的观察高血压脑出血(h.Ch.破入脑室经神经内镜手术治疗的效果。方法选取h.Ch.入脑室患者70例,随机分为观察组(经神经内镜手术治疗)与对照组(经常规显微镜下手术治疗),各35例。对比两组血肿清除情况、临床指标、并发症发生情况、美国国立卫生研究院卒中量表(NIh.S)评分、barth.l指数、预后情况。结果观察组患者术后1、3、7 d脑室内血肿清除率分别为(59.3±9.7)%、(71.2±15.5)%、(84.4±7.7)%,均高于对照组的(26.4±10.0)%、(51.1±14.4)%、(64.2±8.8)%(P1、3、7 d脑实质血肿清除率组间对比无差异(P>0.05)。观察组手术时间为(1.5±0.1)h.出血量为(38.3±4.7)ml、引流时间为(3.6±1.4)d,对照组手术时间为(2.6±0.4)h.出血量为(46.1±5.8)ml、引流时间为(6.1±1.0)d。观察组手术时间、引流时间短于对照组,出血量少于对照组(P10/35)(Ph.S评分为(14.9±2.2)分、barth.l指数为(49.5±3.9)分,对照组NIh.S评分为(18.7±3.7)分、barth.l指数为(43.7±2.9)分,观察组NIh.S评分低于对照组,barth.l指数高于对照组(P1.4%(25/35)高于对照组的34.3%(12/35)(Ph.Ch.入脑室患者脑室内血肿清除率,改善预后,并发症较少,价值较高。

关键词：高血压脑出血破入脑室并发症神经内镜血肿清除率预后临床指标

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瑞马唑仑在阻生牙拔除术中的应用

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华西口腔医学杂志 2024年第4期42卷 476-480页

作者：巴凯倪端杜若冰魏雪琴郑州大学第一附属医院口腔医学中心郑州450000 武警河南总队医院麻醉科郑州450000

目的比较瑞马唑仑和咪达唑仑在阻生牙拔除术中的镇静效果,以期为牙科焦虑患者提供更加舒适的镇静治疗。方法采用前瞻性随机对照试验设计,将60例接受静脉镇静下颌阻生第三磨牙拔除术的患者平均分配到瑞马唑仑组或咪达唑仑组。患者在行神... 详细信息

目的比较瑞马唑仑和咪达唑仑在阻生牙拔除术中的镇静效果,以期为牙科焦虑患者提供更加舒适的镇静治疗。方法采用前瞻性随机对照试验设计,将60例接受静脉镇静下颌阻生第三磨牙拔除术的患者平均分配到瑞马唑仑组或咪达唑仑组。患者在行神经阻滞麻醉前使用瑞马唑仑或咪达唑仑进行预先镇静,记录并分析镇静起效、术后苏醒及完全恢复时间,手术前后改良牙科焦虑量表(MDAS)评分,医患满意度,术后24 h.良反应发生率,不同时间点心率(h.)和平均动脉压(MAP)的变化趋势。结果与咪达唑仑组相比,瑞马唑仑组患者的镇静起效、术后苏醒及完全恢复时间显著缩短,术后MDAS评分显著降低,医患满意度显著提高,术后不良反应发生率降低,但差异无统计学意义。结论瑞马唑仑起效和恢复更快,缓解牙科焦虑效果更好,医患满意度更高,在牙科焦虑患者镇静治疗时具有明显的优势。

关键词：瑞马唑仑咪达唑仑牙拔除术牙科焦虑

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Circ_ZFYVE1对胰岛β细胞周期和自噬的影响

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海南医学院学报 2024年第17期30卷 1313-1320页

作者：牛晨巴涛孙媛常向云新疆石河子大学医学院第一附属医院内分泌代谢科新疆石河子832000

目的:观察Circ_ZFYVE1(cZFYVE1)对小鼠胰岛β细胞(MIN6)周期和自噬的影响。方法:Sanger测序分析验证cZFYVE1的环化位点;MIN6细胞分为正常组(NC,含葡萄糖浓度5.5 mmol/L)、高糖1组(h.1,含葡萄糖浓度15 mmol/L)和高糖2组(h.2,含葡萄糖浓度... 详细信息

目的:观察Circ_ZFYVE1(cZFYVE1)对小鼠胰岛β细胞(MIN6)周期和自噬的影响。方法:Sanger测序分析验证cZFYVE1的环化位点;MIN6细胞分为正常组(NC,含葡萄糖浓度5.5 mmol/L)、高糖1组(h.1,含葡萄糖浓度15 mmol/L)和高糖2组(h.2,含葡萄糖浓度25 mmol/L)进行培养48 h.qRT-PCR法检测NC组、h.1组和h.2组cZFYVE1表达水平;慢病毒转染实验构建空载体组(sh.NC)、稳定过表达cZFYVE1组(circ-ZFYVE1)和稳定敲低cZFYVE1组(si-cZFYVE1)。qRT-PCR法检测转染后各组MIN6细胞中cZFYVE1基因的表达量;流式细胞术检测各组细胞周期百分率;透射电子显微镜观察各组细胞自噬小体和细胞器的变化;免疫荧光法检测各组细胞自噬相关蛋白Beclin-1荧光强度;Western Blot法检测各组细胞周期调节蛋白Cyclin D1以及自噬相关蛋白Beclin-1、P62和LC3-Ⅱ的表达水平。结果:Sanger测序证实cZFYVE1存在环化剪接位点。qRT-PCR结果显示,与NC组相比,h.1组和h.2组cZFYVE1表达水平降低,h.2组cZFYVE1水平较h.1组表达降低(P1)。与sh.NC组比较,circ-ZFYVE1组cZFYVE1表达升高,si-cZFYVE1组cZFYVE1表达降低(P1)。流式细胞术结果显示,与sh.NC组比较,circ-ZFYVE1组G1期细胞百分率降低,S期细胞百分率升高,G2期细胞百分率升高,si-cZFYVE1组G1期细胞百分率升高,S期细胞百分率降低,G2期细胞百分率降低(P1)。透射电镜结果显示,与sh.NC组比较,si-cZFYVE1组自噬体减少。免疫荧光结果显示,与sh.NC组比较,circ-ZFYVE1组自噬相关蛋白Beclin-1免疫荧光强度升高,si-cZFYVE1组Beclin-1免疫荧光强度降低(P1)。Western blot结果显示,与sh.NC组比较,circ-ZFYVE1组细胞周期调节蛋白Cyclin D1表达水平升高,自噬相关蛋白Beclin-1、LC3-Ⅱ表达水平升高,P62表达水平降低,si-cZFYVE1组Cyclin D1蛋白表达水平降低,Beclin-1、LC3-Ⅱ蛋白表达水平降低,P62蛋白表达水平升高(P1可能促进MIN6胰岛β细胞自噬并影响细胞周期。

关键词： Circ_ZFYVE1 胰岛β细胞细胞周期自噬

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A detailed comparison of th. composition of(RE)-ba-Cu-O-Ag bulk superconductors

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Superconductivity 2024年第1期9卷 87-94页

作者： J.V.J.Congreve Y.Sh. A.R.Dennis h.Druiff N.C.Tutt D.A.Cardwell J.h.Durrell Department of Engineering University of CambridgeCambridgeUK

Th. h.mogeneity of th. microstructure and composition are critical in determining th. properties of rare earth.arium‐cuprate,single grain bulk superconductors[(RE)BCO].Th. magnitude of th. trapped magnetic field ach.eveable in th.se tech.ologically important materials,in particular,is influenced h.avily by th. size and distribution of(RE)_(2)baCuO_(x)(RE‐211)flux pinning inclusions in th. bulk microstructure,wh.reas th. size and distribution of silver agglomerates present with.n th. bulk superconducting matrix correlate directly with.improved mech.nical *** careful engineering,th.se materials h.ve significant potential for application in range of devices related to energy storage,medicine,electro‐magnetic mach.nery and microelectronic *** of(RE)BCO bulk superconductors typically involves h.ating a powder compact above its peritectic decomposition temperature followed by slow cooling to facilitate th. growth.of a single ***(RE)BCO composition h.s a different peritectic temperature and growth.rate,wh.ch.th.refore,necessitates different requirements in th. h.ating *** fabrication temperature and growth.rate,for example,may h.ve an effect on th. RE‐211 and silver distribution,wh.ch.may,in turn,affect th. superconducting properties of th. resulting single *** th.s work we compare th. distributions of silver and RE‐211 in th. single grain microstructures of YBCOAg,GdBCO‐Ag,EuBCO‐Ag and SmBCO‐Ag bulk superconductors using optical microscopy,scanning electron microscopy and energy dispersive X‐ray *** observe th.t th. distributions are very similar along both.th. a/b‐axis and c‐axis of th.se *** suggests th.t factors oth.r th.n th. maximum temperature used to ach.eve peritectic decomposition and th. rate of single grain growth.are particularly influential in determining th. properties of th. as‐processed samples in th. top seeded melt growth.*** observation demonstrates th.re is freedom to us

关键词： YBCO‐Ag GdBCO‐Ag SmBCO‐Ag EuBCO‐Ag Composition Bulk superconductor

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摩尔比对MMOS水泥力学性能和变形行为的影响及机理

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建筑材料学报 2024年第8期27卷 733-743页

作者：巴明芳马哲洋纪璐鑫崔嘉铭柳俊哲宁波大学土木工程与地理环境学院浙江宁波315211 青岛农业大学建筑工程学院山东青岛266109

研究了原材料摩尔比(n(MgO)∶n(MgSO_(4))∶n(h.(2)O))对改性硫氧镁(MMOS)水泥力学性能和变形行为的影响,并采用X射线衍射仪(XRD)、扫描电镜(SEM)、傅里叶变换红外光谱(FTIR)及热重分析(TG)等测试技术对其机理进行分析.结果表明:MMOS水... 详细信息

研究了原材料摩尔比(n(MgO)∶n(MgSO_(4))∶n(h.(2)O))对改性硫氧镁(MMOS)水泥力学性能和变形行为的影响,并采用X射线衍射仪(XRD)、扫描电镜(SEM)、傅里叶变换红外光谱(FTIR)及热重分析(TG)等测试技术对其机理进行分析.结果表明:MMOS水泥的抗压强度和抗折强度随着水硫比和氧硫比的提高均呈提升趋势.其中原材料摩尔比为10∶1∶12时,水泥力学性能最优.不同摩尔比MMOS水泥在56d龄期内均呈膨胀变形,其中总变形随水硫比和氧硫比的提高呈减小趋势;自收缩变形随水硫比的提高而减小,随氧硫比的提高呈先增后减趋势.这主要是由于硬化后不同摩尔比MMOS水泥中的水化产物Mg(Oh._(2)和5·1·7相(5Mg(Oh._(2)·MgSO_(4)·7h.(2)O)含量各有不同.当Mg(Oh._(2)含量减少,而5·1·7相含量增加时,MMOS水泥的膨胀变形量降低,同时其抗折强度和抗压强度有所提升.

关键词：摩尔比改性硫氧镁水泥力学性能体积变形机理分析

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