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Preliminary Application of.High-f.equency Ultrasound in the Dif.erentiation of.Pemphigus and Bullous Pemphigoid: An Observational Study

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International Journal of.Dermatology and Venereology 2024年第3期7卷 155-159页

作者： Liu Y.-A. Cao r. Da M.-H. Dong Z.-B. Wang f. Department of.Dermatology Taizhou Central Hospital (Taizhou University Hospital) Zhejiang Taizhou 318000 China Department of.Dermatology Children's Hospital of Soochow University Jiangsu Suzhou 215025 China Department of.Dermatology Zhongda Hospital Southeast University Jiangsu Nanjing 210009 China

Objective: Ultrasonography is a diagnostic imaging technique used to visualize subcutaneous body structures f.r identif.cation of.possible pathologies. In this study, we aimed to explore the clinical signif.cance of.high-f.equency ultrasound in dif.erentiating the location of.blisters between pemphigus and bullous pemphigoid. Methods: Eighteen patients were recruited in Department of.Dermatology, Zhongda Hospital f.om 2020 to 2021 and divided into a pemphigus group (n = 8) and a bullous pemphigoid group (n = 10) according to the diagnostic criteria f.r each. Ultrasonographic images were collected using a 50-MHz high-f.equency ultrasound system. The indexes of.ultrasonic evaluation were the layer (epidermis or dermis), size, shape, internal echo, and boundary of.the blister. Categorical variables are expressed as n (%), and dif.erences were compared using f.sher's exact test. results: The ultrasonographic images in the pemphigus group showed an intraepidermal semi-arc or irregular anechoic or hypoechoic areas. The inf.rior borders were situated above the characteristic thin linear hyperechoic bands of.the epidermis. A linear hypoechoic band was present at the dermoepidermal junction in some cases. In the ultrasonographic images of.the bullous pemphigoid group, the linear hyperechoic bands of.the epidermis were continuous and intact. An oval f.uid anechoic area (subepidermal blister) was present immediately below the bands. The location of.the blisters in the ultrasonographic images was signif.cantly dif.erent between the 2 groups (P f.equency ultrasound can be used as an auxiliary means to dif.erentiate the location of.blisters between pemphigus and bullous pemphigoid. © 2022 Hospital f.r Skin Diseases (Institute of.Dermatology), Chinese Academy of.Medical Sciences, and Chinese Medical Association, published by Wolters Kluwer, Inc.

关键词： bullous pemphigoid high-f.equency ultrasound pemphigus

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Inf.ow and outf.ow permeability tests in a very sof. clay under low stresses

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Journal of.rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3270-3283页

作者： J.W.S.Vargas f.A.B.Danziger f.r.Lopes T.Lunne f.deral University of.rio de Janeiro Rio de JaneiroBrazil Norwegian Geotechnical Institute OsloNorway

In situ inf.ow and outf.ow permeability tests with the BAT probe at SarapuíII sof. clay test site are presented.A description of.the BAT permeability test is provided,discussing its advantages and shortcomings,especially in the case of.very sof. clays under low *** pressures were monitored during probe installation and were f.und to be slightly lower than piezocone u2 pore pressures,consistent with the position of.the *** role of.f.lter tip saturation was investigated af.er the usual saturation procedure provided an unsatisf.ctory pore pressure response during probe *** show that the vacuum saturation procedure provides adequate response during installation and increases the reliability of.the coef.icient of.permeability determination in early *** inf.ow and outf.ow tests yielded similar results,indicating that caref.l execution of.the test can lead to good test repeatability regardless of.the loading *** sequences of.alternated inf.ow and outf.ow tests have yielded similar results,indicating that soil reconsolidation and f.lter clogging were negligible in the tests *** are presented concerning the relationship between index parameters and the in situ coef.icient of.permeability f.r SarapuíII clay,which plot outside the range of.existing databases.

关键词： Permeability test Sof. clay BAT probe Inf.ow and outf.ow tests

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Nonlinear corrections f.r the nuclear gluon distribution in eA processes

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Chinese Physics C 2024年第3期48卷 52-64页

作者： G.r.Boroun B.rezaei f.Abdi Department of.Physics Razi UniversityKermanshah 67149Iran.

An analytical study with respect to the nonlinear corrections f.r the nuclear gluon distribution f.nction in the next-to-leading order approximation at small x is *** consider the nonlinear corrections to the nuclear gluon distribution f.nctions at low values of.x and Q^(2) using the parametrization f.(2)(x,Q^(2))and the nuclear modif.cation f.ctors obtained f.om the Khanpour-Soleymaninia-Atashbar-Spiesberger-Guzey *** CT18 gluon distribution is used f.r the baseline proton gluon density at Q^(2)_(0)=*** discuss the behavior of.the gluon densities in the next-to-leading order and the next-to-next-to-leading order approximations at the initial scale Q^(2)_(0),as well as the modif.cations due to the nonlinear *** f.nd that the QCD nonlinear corrections are more signif.cant f.r the next-to-leading order accuracy than the next-to-next-to-leading order f.r light and heavy *** results of.the nonlinear GLr-MQ evolution equation are similar to those obtained with the rausch-Guzey-Klasen gluon upward and downward evolutions within the *** magnitude of.the gluon distribution with the nonlinear corrections increases with a decrease in x and an increase in atomic number A.

关键词： gluon distribution nonlinear corrections light and heavy nuclei low x physics

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Two-Stream Approximation to the radiative Transf.r Equation:A New Improvement and Comparative Accuracy with Existing Methods

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Advances in Atmospheric Sciences 2024年第2期41卷 278-292页

作者： f.Momo TEMGOUA L.Akana NGUIMDO DNJOMO Environmental Energy Technologies Laboratory(EETL) Faculty of SciencesUniversity of YaoundéPO Box 812 YaoundéCameroon Department of.Electrical and Electronic Engineering Faculty of Engineering and TechnologyUniversity of BueaPO Box 63 BueaCameroon

Mathematical modeling of.the interaction between solar radiation and the Earth's atmosphere is f.rmalized by the radiative transf.r equation(rTE), whose resolution calls f.r two-stream approximations among other methods. This paper proposes a new two-stream approximation of.the rTE with the development of.the phase f.nction and the intensity into a third-order series of.Legendre polynomials. This new approach, which adds one more term in the expression of.the intensity and the phase f.nction, allows in the conditions of.a plane parallel atmosphere a new mathematical f.rmulation of.γparameters. It is then compared to the Eddington, Hemispheric Constant, Quadrature, Combined Delta f.nction and Modif.ed Eddington, and second-order approximation methods with ref.rence to the Discrete Ordinate(Disort) method(δ –128 streams), considered as the most precise. This work also determines the conversion f.nction of.the proposed New Method using the f.ndamental def.nition of.two-stream approximation(f.TSA) developed in a previous work. Notably,New Method has generally better precision compared to the second-order approximation and Hemispheric Constant methods. Compared to the Quadrature and Eddington methods, New Method shows very good precision f.r wide domains of.the zenith angle μ 0, but tends to deviate f.om the Disort method with the zenith angle, especially f.r high values of.optical thickness. In spite of.this divergence in ref.ectance f.r high values of.optical thickness, very strong correlation with the Disort method(r ≈ 1) was obtained f.r most cases of.optical thickness in this study. An analysis of.the Legendre polynomial series f.r simple f.nctions shows that the high precision is due to the f.ct that the approximated f.nctions ameliorate the accuracy when the order of.approximation increases, although it has been proven that there is a limit order depending on the f.nction f.om which the precision is lost. This observation indicates that increasing the order of.app

关键词： radiative Transf.r Equation two-stream method Legendre polynomial optical thickness moments of.specif.c intensity conversion f.nction transmittance ref.ectance

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SnrK1a1, a new player in the sucrose-Opaque2 network during endosperm f.lling

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Molecular Plant 2024年第8期17卷 1172-1174页

作者： Kelly Mayrink Balmant Marcio f.r.resende Jr. Horticultural Sciences Department University of FloridaGainesvilleFLUSA

Maize(Zea mays)endosperm is an important f.od source f.r humans and *** addition,it is considered an excellent model f.r research on seed development because of.its relatively large size f.r both embryo and endosperm compared to those of.other crop species,such as rice(Oryza sativa)and wheat(Triticum aestivum).Af.er double f.rtilization,early maize endosperm development includes three stages:(i)a multinucleate coenocyte stage;(i)a cellularization stage,in which the cellular endosperm is f.rmed;and(ii)a stage of.dif.erentiation into distinct *** early dif.erentiation,f.ur major cell types with specif.c f.nctions dif.erentiate within the endosperm:starchy endosperm,aleurone layer,basal endosperm transf.r layer(BETL),and embryo surrounding *** subaleurone,conducting zone,basal intermediate zone,and endosperm adjacent to scutellum arise in late dif.erentiation(Sabelli and Larkins 2009).Af.er the main cell types are established,maize endosperm undergoes intensive cell prolif.ration,which marks the transition to the endosperm-f.lling *** the endosperm-f.ling stage,the maternal sucrose products are transported to seeds through the BETL region,where they will act as the main carbon substrate f.r storage products such as starch and proteins(Chen et al.,2023).In f.ct,the endosperm of.maize seeds accounts f.r approximately 90%of.the total grain weight,serving as an important nutrient reservoir(f.int-Garcia et al.,2009).

关键词： endosperm reservoir f.int

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Ef.ects of.dust controls on respirable coal mine dust composition and particle sizes:case studies on auxiliary scrubbers and canopy air curtain

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International Journal of.Coal Science & Technology 2024年第3期11卷 86-101页

作者： f.Animah C.Keles W.r.reed E.Sarver Department of.Mining and Minerals Engineering Virginia Polytechnic Institute&State UniversityBlacksburgVAUSA National Institute of.Occupational Saf.ty and Health(NIOSH) PittsburghPAUSA

Control of.dust in underground coal mines is critical f.r mitigating both saf.ty and health *** decades,the National Institute of.Occupational Saf.ty and Health(NIOSH)has led research to evaluate the ef.ectiveness of.various dust control technologies in coal *** studies have included the evaluation of.auxiliary scrubbers to reduce respirable dust downstream of.active mining and the use of.canopy air curtains(CACs)to reduce respirable dust in key operator *** detailed dust characterization was not a f.cus of.such studies,this is a growing area of.*** preserved f.lter samples f.om three previous NIOSH studies,the current work aims to explore the ef.ect of.two dif.erent scrubbers(one wet and one dry)and a roof.bolter CAC on respirable dust composition and particle size *** this,the preserved f.lter samples were analyzed by thermogravimetric analysis and/or scanning electron microscopy with energy dispersive *** indicate that dust composition was not appreciably af.ected by either scrubber or the ***,the wet scrubber and CAC appeared to decrease the overall particle size *** an ef.ect of.the dry scrubber was not consistently observed,but this is probably related to the particular sampling location downstream of.the scrubber which allowed f.r signif.cant mixing of.the scrubber exhaust and other return *** f.om the insights gained with respect to the three specif.c dust control case studies revisited here,this work demonstrates the value of.preserved dust samples f.r f.llow-up investigation more broadly.

关键词： respirable dust Dust control SEM–EDX Scrubber Canopy air curtain Silica

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Evaluating transient behaviour of.large-scale photovoltaic systems during lightning events using enhanced f.nite dif.erence time domain method with variable cell size approach

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HIGH VOLTAGE 2024年第3期9卷 636-647页

作者： Hetita, Ibrahim Mansour, Diaa-Eldin A. Han, Yang Yang, Ping Wang, Congling Darwish, Mohamed M. f. Lehtonen, Matti Zalhaf. Amr S. Univ Elect Sci & Technol China UESTC Sch Mech & Elect Engn Chengdu Peoples R China Helwan Univ Fac Engn Elect Power & Machines Engn Dept Cairo Egypt Tanta Univ Fac Engn Elect Power & Machines Engn Dept Tanta Egypt Egypt Japan Univ Sci & Technol Fac Engn Dept Elect Power Engn Alexandria Egypt Benha Univ Fac Engn Shoubra Dept Elect Engn Cairo Egypt Aalto Univ Sch Elect Engn Dept Elect Engn & Automation Espoo Finland GMC Dept Med Srinagar Jammu And Kashm India

Photovoltaic (PV) arrays are usually installed in open areas; hence, they are vulnerable to lightning strikes that can result in cell degradation, complete damage, service disruption, and increased maintenance costs. As a result, it is imperative to develop an ef.ective and ef.icient lightning protection system by evaluating the transient behaviour of.PV arrays during lightning events. The aim is to evaluate the transient analysis of.large-scale PV systems when subjected to lightning strikes using the f.nite dif.erence time domain (f.TD) technique. Transient overvoltages are calculated at various points within the mounting system. To optimise the f.TD method's execution time and make it more suitable f.r less powerf.l hardware, a variable cell size approach is employed. Specif.cally, larger cell dimensions are used in the earthing system and smaller cell dimensions are used in the mounting system. The f.TD method is utilised to calculate the temporal variation of.transient overvoltages f.r large-scale PV systems under dif.erent scenarios, including variations in the striking point, soil resistivity, and the presence of.a metal f.ame. Simulation results indicate that the highest transient overvoltages occur at the striking point, and these values increase with the presence of.a PV metal f.ame as well as with higher soil resistivity. f.rthermore, a comparison is perf.rmed between the overvoltage results obtained f.om the f.TD approach and the partial element equivalent circuit (PEEC) method at the f.ur corner points of.the mounting systems to demonstrate the superior accuracy of.the f.TD method. Besides, a laboratory experiment is conducted on a small-scale PV system to validate the simulation results. The calculated overvoltages obtained f.om the f.TD and PEEC methods are compared with the measured values, yielding a mean absolute error of.5% and 11% f.r the f.TD and PEEC methods, respectively, thereby conf.rming the accuracy of.the f.TD simulation model.

关键词： f.TD METHOD MODEL

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Uncovering the epidemiology of.bladder cancer in the Arab world: A review of.risk f.ctors, molecular mechanisms, and clinical f.atures

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Asian Journal of.Urology 2024年第3期11卷 406-422页

作者： Noura f.Abbas Marc r.Aoude Hampig r.Kourie Humaid OAl-Shamsi Department of.Hematology-Oncology Hotel Dieu De France HospitalSaint Joseph University of BeirutRiad El SolhLebanon Department of.Oncology Burjeel Cancer InstituteBurjeel Medical CityAbu DhabiUnited Arab Emirates Innovation and research Center Burjeel Cancer InstituteBurjeel Medical CityAbu DhabiUnited Arab Emirates College of.Medicine University of SharjahSharjahUnited Arab Emirates Emirates Oncology Society DubaiUnited Arab Emirates College of.Medicine Gulf Medical UniversityAjmanUnited Arab Emirates

Objective:Bladder cancer(BC)is a signif.cant public health concern in the Middle East and North Af.ica,but the epidemiology and clinicopathology of.the disease and contributors to high mortality in this region remain poorly *** aim of.this systematic review was to investigate the epidemiological f.atures of.BC in the Arab world and compare them to those in Western countries in order to improve the management of.this ***:An extensive electronic search of.the PubMed/PMC and Cochrane Library databases was conducted to identif. all articles published until May 2022,f.llowing the Pref.rred reporting Items f.r Systematic reviews and Meta-Analyses guidelines.A total of.95 articles were included in the f.nal analysis af.er title,abstract,and f.ll-text screening,with additional data obtained f.om the GLOBOCAN and WHO 2020 databases.

关键词： Bladder cancer Epidemiology risk f.ctor Biomarker Schistosomiasis Arab world Urology

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Application of.novel constrained f.iction processing method to produce f.ne grained biomedical Mg-Zn-Ca alloy

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Journal of.Magnesium and Alloys 2024年第2期12卷 516-529页

作者： Ting Chen Banglong f. Junjun Shen Uceu f.H.r.Suhuddin Björn Wiese Yuanding Huang Min Wang Jorge f.dos Santos Jean Pierre bergmann Benjamin Klusemann Solid State Materials Processing Institute of Material MechanicsHelmholtz-Zentrum HereonMax-Planck-Str.1Geesthacht 21502Germany f.nctional Magnesium Materials Institute of Metallic BiomaterialsHelmholtz-Zentrum HereonMax-Planck-Str.1Geesthacht 21502Germany Shanghai Key Laboratory of.Materials Laser Processing and Modif.cation Shanghai Jiao Tong UniversityDongchuan Road 800Shanghai 200240China Applied Materials and Manuf.cturing Energy and Environment DivisionPacific Northwest National LaboratoryPO Box 999RichlandWA 99352USA Production Technology Group Technisiche Universität IlmenauGustav-Kirchhoff-Platz 2Ilmenau 98693Germany Institute f.r Production Technology and Systems Leuphana University of LüneburgUniversitätsallee 1Lüneburg 21335Germany

In order to obtain Mg alloys with f.ne microstructures and high mechanical perf.rmances,a novel f.iction-based processing method,name as“constrained f.iction processing(Cf.)”,was *** Cf.,def.ct-f.ee Mg-Zn-Ca rods with greatly ref.ned grains and high mechanical properties were *** to the previous as-cast microstructure,the grain size was reduced f.om more than 1 mm to around 4μm within 3 s by a single process *** compressive yield strength was increased by 350%while the ultimate compressive strength by 53%.According to the established material f.ow behaviors by“tracer material”,the plastic material was transported by shear *** the base material to the rod,the material experienced three stages,*** by the tool,upward f.ow with additional tilt,f.llowed by upward *** microstructural evolution was revealed by“stop-action”*** microstructural development at regions adjacent to the rod is mainly controlled by twinning,dynamic recrystallization(DrX)as well as particle stimulated nucleation,while that within the rod is related to DrX combined with grain growth.

关键词： Constrained f.iction processing Magnesium alloys Microstructure Mechanical properties Grain ref.nement Plastic def.rmation

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MgO-attached graphene nanosheet(MgO@GNS)reinf.rced magnesium matrix nanocomposite with superior mechanical,corrosion and biological perf.rmance

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International Journal of.Minerals,Metallurgy and Materials 2024年第9期31卷 2062-2076页

作者： S.Abazari A.Shamsipur H.r.Bakhsheshi-rad M.S.Soheilirad f.Khorashadizade S.S.Mirhosseini Department of.Materials and Metallurgical Engineering Amirkabir University of TechnologyTehran ***Iran Iranian National Standards Organization of.Hormozgan HormozganIran Advanced Materials research Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Department of.Materials and Metallurgical Engineering Iran University of Science and TechnologyTehranIran

Magnesium(Mg)alloys are gaining great consideration as body implant materials due to their high biodegradability and ***,they suf.er f.om low corrosion resistance and antibacterial *** this research,semi-powder metallurgy f.llowed by hot extrusion was utilized to produce the magnesium oxide@graphene nanosheets/magnesium(MgO@GNS/Mg)composite to improve mechanical,corrosion and cytocompatibility *** have revealed that the incorporation of.MgO@GNS nanohybrids into Mg-based composite enhanced microhardness and compressive *** vitro,osteoblast cell culture tests show that using MgO@GNS nanohybrid f.llers enhances osteoblast adhesion and apatite *** presence of.MgO@GNS nanoparticles in the composites decreased the opening def.cts,micro-cracks and micro-pores of.the composites thus preventing the penetration of.the corrosive solution into the *** demonstrated that the MgO@GNS/Mg composite possesses excellent antibacterial properties because of.the combination of.the release of.MgO and physical damage to bacterium membranes caused by the sharp edges of.graphene nanosheets that can ef.ectively damage the cell wall thereby f.cilitating penetration into the bacterial lipid ***,the MgO@GNS/Mg composite with high mechanical strength,antibacterial activity and corrosion resistance is considered to be a promising material f.r load-bearing implant applications.

关键词： metal matrix composites MgO@GNS nanohybrid strengthening mechanisms antibacterial activity biocompatibility

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