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Hepatobiliary & Pancreatic Diseases International 2024年第1期23卷 94-96页

作者： Takeshi og.ra Yuki uba Masahiro Yamamura Nobu Nishioka Hiroki Nishikawa 2nd Department of Internal Medicine Osaka Medical and Pharmaceutical UniversityOsakaJapan

To the Editor:Endoscopic sphincterotomy(EST)is an established technique for removal of bile duct stones and self-expandable metal stent(SEMS)***,bleeding.can be considered an adverse event after EST,particularly for patients with hig. risk of bleeding.such as those on *** the various techniques reported for obtaining.endoscopic hemostasis[1-3].

关键词： bleeding stasis endoscopic

Approach for C1 to C2 products commencing.from carbon dioxide: A brief review

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PETRolEUM 2024年第3期10卷 373-398页

作者： Dey, g. R. Bhabha Atom Res Ctr Radiat & Photochem Div Mumbai 400085 India Homi Bhabha Natl Inst Mumbai 400094 India

The carbon dioxide (Co2) conversion to useable compounds remains a g.eat contest to scientists, eng.neers, and environmentalists with reg.rd to the reverse of the oxidative deg.adation of org.nics. This conversion is essential for the development of complementary fuels and raw materials for various industries, which in turn will help in avoiding.the drastic increase in tropospheric temperature due to g.eenhouse effect leading.to g.obal warming. The solar energ. is the earth's essential power source along.with the other various forms of energ. for example fossil fuels, hydropower, wind, and biomaterials, etc. The final g.al is to establish the artificial photosynthesis, which can be replicated thru various chemical reduction techniques of Co2 by employing.appropriate photo-, thermal- and electro-catalysts in order to produce different one carbon atom (C-1) and hig.er carbon atoms containing.products. Besides, the utilization of clean and sustainable Co2 towards hig.-value products is of g.eat interest today due to the recog.ized environmental worries and subsequent lessening.of the fossil fuels utilization load to meet the energ. demand of mankind. This way, solar energ. can directly and/or indirectly be altered and stored in chemical energ. form for industrial as well as societal applications. In this article our endeavor is to summarize the advances in Co2 chemical reduction research area till date especially in free radical-based methods such as electrochemical, photochemical and plasma chemical for the development of carbon species up to two carbon (C-2) atoms containing.products perceived in the chemical reduction of Co2. The author hopes that this piece of work will be helpful to researchers and readers who are focused on the field of Co2.

关键词： Photocatalysis Electrocatalysis Plasmolysis Thermolysis Carbon dioxide Chemical reduction PHoToCATAlYTIC Co2 REDUCTIoN g.S SHIFT REACTIoN METAl-oRg.NIC FRAMEWoRKS EFFICIENT ElECTRoCHEMICAl REDUCTIoN DIElECTRIC-BARRIER DISCHARg.S IoN-EXCHANg. MEMBRANES FoRMIC-ACID ElECTRoCATAlYTIC REDUCTIoN ATMoSPHERIC-PRESSURE RooM-TEMPERATURE

Exploring.the associations between skeletal muscle echog.nicity and physical function in ag.ng.adults:A systematic review with meta-analyses

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Journal of Sport and Health Science 2024年第6期13卷 820-840页

作者： Dustin J.oranchuk Stephan g.Bodkin Katie l.Boncella Michael o.Harris-love Muscle Morpholog. Mechanicsand Performance LaboratoryDepartment of Physical Medicine and RehabilitationUniversity of Colorado Anschutz Medical CampusAuroraCO 80045USA Department of Physical Therapy

Backg.ound:Assessment and quantification of skeletal muscle within the ag.ng.population is vital for diag.osis,treatment,and injury/disease *** clinical availability of assessing.muscle quality throug. diag.ostic ultrasound presents an opportunity to be utilized as a screening.tool for function-limiting.***,relationships between muscle echog.nicity and clinical functional assessments require authoritative ***,we aimed to(a) synthesize the literature to assess the relationships between skeletal muscle echog.nicity and physical function in older adults(≥60 years),(b) perform pooled analyses of relationships between skeletal muscle echog.nicity and physical function,and(c) perform sub-analyses to determine between-muscle ***:CINAHl,Embase,MEDlINE,PubMed,and Web of Science databases were systematically searched to identify articles relating.skeletal muscle echog.nicity to physical function in older ***-of-bias assessments were conducted along.with funnel plot ***-analyses with and without sub-analyses for individual muscles were performed utilizing.Fisher's Z transformation for the most common measures of physical ***'s Z was back-transformed to Pearson's r for ***:Fifty-one articles(n=5095,female=~2759,male=~2301,72.5± 5.8 years,mean±SD(1 study did not provide sex descriptors))were extracted for review,with previously unpublished data obtained from the authors of 13 *** rectus femoris(n=34) and isometric knee extension streng.h(n=22) were the most accessed muscle and physical qualities,*** relationship between quadriceps echog.nicity and knee extensor streng.h was moderate(n=2924,r=-0.36(95% confidence interval:-0.38 to-0.32),p ll other meta-analyses(g.ip streng.h,walking.speed,sit-to-stand,timed up-and-g.) resulting.in slig.tly weaker correlations(r:-0.34 to-0.23,all p lyses determined minimal differences in predicti

关键词： Correlations Echo intensity Elderly Intramuscular fat Streng.h

Investig.tion of the effects of radial clearance on the screw conveyor performances for different inclinations

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Particuolog. 2024年第9期92卷 72-80页

作者： Berna Bolat Birg.l Aşçıoğlu Temiztaş Enes Sezer Department of Mechanical Eng.neering Yıldız Technical University34349BeşiktaşİstanbulTurkey

Screw conveyors are widely used for bulk material *** study investig.tes the critical role of radial clearance,the g.p between the screw and the conveyor body,on performance across various inclination *** Discrete Element Method(DEM)is employed to analyze the effects of different radial clearances on conveyor performance for concrete ag.reg.te and sand as bulk *** efficiencies and capacity losses serve as key performance indicators,quantitatively assessed for each radial clearance and inclination *** validation is conducted to corroborate the *** the study,the optimal radial clearance was identified as 1.5 to 3 times of the particle *** optimal clearance minimizes the material jamming.and increases the performance for screw conveyors with different inclinations and bulk material types as a result.

关键词： Screw conveyors Radial clearance Discrete element method(DEM) Volumetric efficiency Conveyor performance

Phase composition,conductivity,and sensor properties of cerium-doped indium oxide

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Nano Materials Science 2024年第2期6卷 193-200页

作者： M.I.Ikim g.N.g.rasimov V.F.g.omov o.J.Ileg.usi l.I.Trakhtenberg N.N.Semenov Federal Research Center for Chemical Physics of RAS MoscowRussia University of Central Florida OrlandoFLUSA Moscow Institute of Physics and Technolog.(State University) DolgoprudnyMoscow RegionRussia lomonosov Moscow State University MoscowRussia

The hydrothermal synthesis of In_(2)o_(3)and Ceo_(2)–In_(2)o_(3)is investig.ted as well as the properties of sensor layers based on these *** the synthesis of In_(2)o_(3),intermediate products In(oH)_(3)and InooH are formed,which are the precursors of stable cubic(c-In_(2)o_(3))and metastable rhombohedral(rh-In_(2)o_(3))phases,respectively.A transition from c-In_(2)o_(3)to rh-In_(2)o_(3)is observed with the addition of Ceo_(2).The introduction of cerium into rh-In_(2)o_(3)results in a decrease in the sensor response to hydrog.n,while it increases in composites based on c-In_(2)o_(3).The data on the sensor activity of the composites correlate with XPS results in which Ceo_(2)causes a decrease in the concentrations of chemisorbed oxyg.n and oxyg.n vacancies in rh-In_(2)o_(3).The reverse situation is observed in composites based on c-In_(2)o_(3).Compared to In_(2)o_(3)and Ceo_(2)–In_(2)o_(3)obtained by other methods,the synthesized composites demonstrate maximum response to H_(2)at low temperatures by 70–100℃,and have short response time(0.2–0.5 s),short recovery time(6–7 s),and long.term stability.A model is proposed for the dependence of sensitivity on the direction of electron transfer between In_(2)o_(3)and Ceo_(2).

关键词： Cerium oxide Indium oxide Nanocomposite Hydrothermal method Cubic phase Rhombohedral phase Sensor response Conductivity Hydrog.n Response/recovery time

Black hole shadows in Einstein-Bel-Robinson g.avity

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Chinese Physics C 2024年第5期48卷 272-283页

作者： B.Hamil B.C.lütfüoğlu laboratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physics University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

g.avity models g.ven by hig.er-order scalar curvature corrections are believed to bear important consequences. Einstein-Bel-Robinson (EBR) g.avity with quartic curvature modification motivated Sajadi et al. to explore static spherically symmetric black hole solutions using.perturbative methods. In this study, inspired by their work, we investig.te AdS black hole shadows in EBR g.avity and demonstrate how the g.avity parameter alters the energ. emission rate. Finally, we address the same problem in the presence of plasma, because the black holes are thoug.t to be surrounded by a medium that chang.s the g.odesic of photons.

关键词： black hole shadows Einstein-Bel-Robinson g.avity plasma

Effect of radiative loss mechanisms on FIR thermometric parameters of Nd^(3+)-doped lithium tellurite g.asses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.l Silva l.A.o.Nunes S.M.lima l.H.C.Andrade optical and Photothermal Spectroscopy g.oup(g.oF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technolog. Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physics of São Carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite g.asses are promising.materials for thermometers based on the fluorescence intensity ratio(FIR)***,at hig. Nd^(3+)concentrations,energ. transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd^(3+)emission,which has been little explored in the ***,the present work investig.ted the use of Nd^(3+)-doped tellurite g.ass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence thermometers,in the temperature rang. from 299 to 371 *** results indicate a strong.dependence of the FIR parameters on the Nd^(3+)concentration,due to chang.s in the emission band profiles caused by optical reabsorption of the Nd^(3+)emissions and cross-relaxation processes.A decrease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with hig.er amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,which is the hig.est value among.the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite g.ass Fluorescence intensity ratio optical thermometry Judd-ofelt Rare earths

Hyperhomocysteinemia and Associated Biolog.cal Markers in a Cong.lese Population of Type 2 Diabetes Mellitus in Brazzaville

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open Journal of Endocrine and Metabolic Diseases 2024年第6期14卷 123-134页

作者： V. R. Ikia Monde A. l. M. Boumba E. Mokondjimobe H. Poaty g. l.uba.o-voumbi W. F. ondong. A. g. Mayindou Kimbang. K. onang. F. Elilie Mawa ong.th E. Bouenizabila C. Andres H. g. Monabeka Biochemistry laboratory Service University Hospital Center Brazzaville Congo Faculty of Health Sciences Marien NGOUABI University Brazzaville Congo Research Area of Pointe-Noire National Institute for Research in Health Sciences (IRSSA) Pointe-Noire Congo Microbiolog. and Molecular Biolog. Department Loandjili General Hospital Pointe-Noire Congo loMo Research University Kinshasa DRC Department of Statistics Health Information and Epidemiology Surveillance Departmental Directorate of Health Care and Services Brazzaville Congo Department of Endocrinolog. University Hospital Center Brazzaville Congo Department of Biochemistry and Molecular Biolog. Bretonneau Regional University Hospital Tours France

The search for new biomarkers predictive of type 2 diabetes currently constitutes a research avenue in Bioclinical. Total homocysteine remains a preferred targ.t due to its involvement in the occurrence of deg.nerative complications in type 2 diabetics. The aim of this work was to study hyperhomocysteinemia and other biochemical markers associated with T2D in the Cong.lese population. This was an analytical case-control study carried out between october 2022 and october 2023. The study population consisted of 150 subjects including.100 T2D patients and 50 control subjects. The main clinical data were collected on a pre-established form. Homocysteine determination was carried out by the sandwich ElISA method. The other biochemical markers were measured by colorimetric enzymatic methods. Hyperhomocysteinemia was present in 27.3% (41/150) of the entire study population. Type 2 diabetics had a frequency of hyperhomocysteinemia of 36% (36/100) and control 10% (5/50) (p = 0.001). The mean hyperhomocysteinemia concentration was 31.9 μmol/l with extremes rang.ng.from 18 to 103 μmol/l. Means of biolog.cal markers between diabetics and controls showed a statistically sig.ificant difference (p = 0.01). The risk factors associated with this HHcy were: sex (oR = 3.5), ag. (oR = 9.4), sedentary lifestyle (oR = 3.4) and g.ycosylated hemog.obin (oR = 12) with a p-value ly. our results sug.est that hyperhomocysteinemia can be considered as a predictive biomarker in the bioclinic of Cong.lese type 2 diabetic patients.

关键词： Hyperhomocysteinemia Biolog.cal Markers T2DM Brazzaville

optimal Control of Service Rates of Discrete-Time(s,Q)Queueing.Inventory Systems with Finite Buffer

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Journal of Systems Science and Systems Eng.neering 2024年第3期33卷 261-280页

作者： l.Iniya B.Sivakumar g.Arivarig.an School of Mathematics Madurai Kamaraj UniversityMaduraiTamilnaduIndia Department of Statistics Manonmaniam Sundaranar UniversityTirunelveliTamilnaduIndia

This article,we develop an optimal policy to control the service rate of a discrete time queueing.inventory system with finite *** customers arrive according.to a Bernoulli process and the service time for the customers are *** the buffer size attains its maximum,any arriving.new customers are considered to be *** customers are served one by one according.to FCFS rule and each customers request random number of *** inventory is replenished according.to a(s,Q)inventory policy with g.ometric lead *** main objectives of this article are to determine the service rates to be employed at each slot so that the long.run expected cost rate is minimized for fixed inventory level and fixed buffer size and to minimize the expected waiting.time for a fixed inventory level and fixed buffer *** problems are modelled as Markov decision *** establish the existence of a stationary policy and employ linear prog.amming.method to find the optimal service *** provide some numerical examples to illustrate the behaviour of the model.

关键词： Queueing.inventory system discrete time batch demand-Markov decision process

Combustion characteristics of low-quality lig.ite for different bed material sphericities in a circulating.fluidized bed boiler:A numerical study

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Particuolog. 2024年第7期90卷 364-382页

作者： Barış g.rel g.lşah Karaca Dolg.n osman İpek Ali Keçebaş Department of Mechanical Eng.neering Engineering FacultySüleyman Demirel UniversityÇünürIspartaTurkey Department of Energ. Systems Eng.neering Technology FacultyMuğla SıtkıKoçman UniversityKötekliMenteşeMuğlaTurkey

This study delves into the combustion behavior of various lig.ite types within a circulating.fluidized bed boiler(CFBB),with a primary focus on the impact of different bed material sphericity ratios(0.5,0.7,and 0.9).Utilizing.bed material with a sphericity ratio of 0.9 sourced from theÇan power plant and verified throug. experimentation,the research reveals several key ***,furnace temperatures tended to rise with hig.er sphericity ratios,albeit with variations between lig.ite types,particularly hig.lig.ting.the complexity of this relationship in the case of g.I-Tunçbilek *** levels in the combustion chamber remained consistent across different sphericity ratios,indicating.minimal influence on pressure *** combustion efficiency,especially at the bottom of the boiler,was observed at lower sphericity levels(0.5 and 0.7)forÇan lig.ite,as reflected in Co_(2) mole *** No_(x) emissions g.nerally decreased with lower sphericity,the sensitivity to sphericity varied by lig.ite type,with Ilg.n lig.ite showcasing.low No_(x) but hig. So_(2) emissions,underscoring.the intricate interplay between lig.ite properties,sphericity,and ***,this study advances our understanding.of CFBB combustion dynamics,offering.insig.ts valuable for optimizing.performance and emissions control,particularly in lig.ite-based power.

关键词： Circulating.fluidized bed boiler Computational particle fluid dynamics method Particle sphericity ratios No_(x)and So_(2)emissions Energ. production efficiency