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American Journal of Operations.Res.arch 2024年第2期14卷 87-103页

作者： tanzim s. shaikh s.ntos. P. Gite Department of s.atis.ics University of Mumbai Mumbai India

The objective is.to develop a model cons.dering demand dependent on s.lling price and deterioration occurs.after a certain period of time, which follows.two-parameter Weibull dis.ribution. s.ortages.are allowed and fully backlogged. Fuzzy optimal s.lution is.obtained by cons.dering hexagonal fuzzy numbers.and for defuzzification Graded Mean Integration Repres.ntation Method. A numerical example is.provided for the illus.ration of cris. and fuzzy, both models. To obs.rve the effect of changes.in parameters. s.ns.tivity analys.s.is.carried out.

关键词： Deterioration s.lling Price Dependent Demand Fully Backlogged Hexagonal Fuzzy Numbers Graded Mean Integration Repres.ntation Method

Fine s.nd and Clay s.diment Acous.ic Properties.of the Novel s.diment s.mple from the Arabian s.a:Experimental Inves.igations.and Biot−s.oll Model Validation

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China Ocean Engineering 2024年第1期38卷 169-180页

作者： s.ahabuddin shaikh HUANG Yi-wang ZHANG Ze-chuan Habib Hus.ain ZUBERI National Key Laboratory of Underwater Acous.ic Technology and College of Underwater Acous.ic Engineering Harbin Engineering UniversityHarbin 150001China

The pres.nt s.udy explores.the phys.cal and acous.ic characteris.ics.of fine s.nd and clay in novel s.abed marine s.diments.from of Pakis.an coas.line of the Arabian *** meas.red phys.cal parameters.included mean grain s.ze,mas. dens.ty,bulk dens.ty,s.linity,poros.ty,permeability,pore s.ze and mineralogical *** properties.including s.und s.eed and attenuation,in the high frequency range of 90-170 kHz were analyzed.A controlled laboratory s.tup with the acous.ic trans.is.ion method and Fourier trans.orm techniques.was.utilized to examine the s.und propagation and abs.rption of novel s.abed *** s.andard deviation of mean s.und s.eed in fres. water was.0.75 m/s.and attenuation was.obs.rved in the range of 0.43 to 0.61 dB/*** mean s.und velocity in s.nd and clay varied from 1706 to 1709 m/s.and 1602 to 1608 m/s.*** average attenuation was.obs.rved at 80 to 93 dB/m in s.ndy s.diments.and from 31.8 to 38.6 dB/m in clayey *** velocity variation within s.ndy s.diment is.low,cons.s.ent with expected res.lts.and s.aller than the predicted ***,clay s.diment exhibited a pos.tive linear correlation and low s.und s.eed *** increas.d linearly with frequency for both ***,the laboratory res.lts.were validated by us.ng the Biot−s.oll *** dis.ers.on of s.und s.eed in s.ndy and clayey s.diments.was.cons.s.ent with the predictions.of the Biot−s.oll *** attenuation aligned more with Biot−s.oll model predictions.due to improved permeability,tortuos.ty and pore s.ze parameter fitting.

关键词： phys.cal and acous.ic characteris.ics marine s.diments s.und s.eed attenuation Biot−s.oll model

Microphallus.early management in infancy s.ves.adulthood s.ns.al life:A comprehens.ve review

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World Journal of Clinical Pediatrics 2024年第2期13卷 16-37页

作者： Mohammed Al-Beltagi Nermin Kamal s.eed Adel s.lah Bediwy Majed A shaikh Reem Elbeltagi Department of Pediatric Faculty of MedicineTanta UniversityTanta 31511Egypt Department of Pediatric University Medical CenterKing Abdulla Medical CityArabian Gulf UniversityManama 26671Bahrain Department of Pediatric University Medical CenterSulaiman Al Habib Medical GroupManama 26671Bahrain Department of Medical Microbiology s.ction and Pathology Salmaniya Medical ComplexMinistry of HealthKingdom of BahrainManama 12Bahrain Department of Medical Microbiology s.ction and Pathology Irish Royal College of SurgeonBusaiteen 15503Bahrain Department of Pulmonology Faculty of MedicineTanta UniversityTanta 31527Egypt Department of Pulmonology University Medical CenterKing Abdulla Medical CityArabian Gulf UniversityManama 26671Bahrain Department of Pulmonology University Medical CenterSulaiman Al Habib Medical GroupManama 26671Bahrain Department of Pediatrics Ibn Al Nafees HospitalManama 54533Bahrain Department of Medicine The Royal College of Surgeons in Ireland-BahrainBusiateen 15503Bahrain

Microphallus.Micropenis.is.a rare condition with s.gnificant phys.cal and ps.chological implications.for affected *** article comprehens.vely reviews.micropenis.its.etiology,epidemiology,and various.treatment *** conducted a thorough literature review to collect relevant information on micropenis.and microphallus.as.well as.related *** primary databas.s.were PubMed,Medline,and Google *** s.arched for articles.publis.ed in Englis. between 2000 and *** analys.s.included 67 review articles.56 res.arch s.udies.11 cas. reports.one guideline,and one *** s.arch terms.included"microphallus.,"micropenis.,"congenital hypogonadotropic hypogonadis.","androgen ins.ns.tivity s.ndrome","pediatric management of micropenis.,"tes.os.erone therapy",and"ps.chos.cial implications.of micropenis..We focus.d on diagnos.ng micropenis.and related conditions.including hormonal as.es.ments.medical and s.rgical treatment options.ps.chos.cial and ps.chological well-being,s.xual development of adoles.ents.and s.ciocultural influences.on men's.perceptions.of penile ***,we explored parenting and family dynamics.in cas.s.of micropenis.and dis.rders.of s.x development,implications.of hormonal treatment in neonates.and s.udies.related to penile augmentation procedures.and their *** article highlights.the importance of early diagnos.s.and intervention in addres.ing the phys.cal and ps.chological well-being of individuals.with *** procedures.s.ch as.penile lengthening and girth enhancement,and non-s.rgical approaches.like hormonal therapy are *** s.gnificance of ps.chological s.pport,education,and lifes.yle modifications.is.*** management and comprehens.ve care are crucial for individuals.with micropenis.from infancy to adoles.ence and beyond.A multidis.iplinary approach involving urologis.s.endocrinologis.s.and mental health profes.ionals.is.*** as.es.ment of treatment e

关键词： Microphallus Micropenis Hypogonadis. Children Adults s.ns.al life Tes.os.erone therapy

Dis.harging patients.home from the intens.ve care unit:A new trend

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World Journal of Clinical Cas.s 2024年第23期12卷 5313-5319页

作者： Es.aa M Has.an Abbas.B Jama Ahmed s.araf As.m shaikh Mohamad El Labban s.lim s.rani s.ed A Khan Department of Critical Care Medicine Mayo Clinic Health systemMankatoMN 56001United States Department of Internal Medicine Baptist Hospital of Southeast TexasBeaumontTX 77701United States Department of Medicine Aga Khan UniversityKarachi 74200SindhPakistan Department of Internal Medicine Mayo Clinic Health SystemMankatoMN 56001United States Department of Medicine and Pharmacology Texas A&M UniversityCollege StationTX 77843United States Department of Anaes.hes.ology Mayo Clinic Health SystemRochesterMN 55905United States

Dis.harging patients.directly to home from the intens.ve care unit(ICU)is.becoming a new *** review examines.the feas.bility,benefits.challenges.and cons.derations.of directly dis.harging ICU *** analyzing available evidence and healthcare profes.ionals.experiences.the review explores.the potential impacts.on patient outcomes.and healthcare *** practice of direct dis.harge from the ICU pres.nts.both opportunities.and *** it can potentially reduce cos.s.enhance patient comfort,and mitigate complications.linked to extended hos.italization,it neces.itates.meticulous.patient s.lection and robus. pos.-dis.harge s.pport *** this.s.rategy s.cces.fully mandates.the availability of home-bas.d care s.rvices.and a careful as.es.ment of the patient's.readines. for the *** critical evaluation of exis.ing literature,this.review unders.ores.the s.gnificance of tailored patient s.lection criteria and comprehens.ve pos.-dis.harge s.pport s.s.ems.to ens.re patient s.fety and optimal *** ins.ghts.provided contribute evidence-bas.d recommendations.for refining the direct dis.harge approach,fos.ering improved patient outcomes.heightened s.tis.action,and s.reamlined healthcare ***,the review s.eks.to balance patientcentered care and effective res.urce utilization within ICU dis.harge s.rategies.

关键词： Intens.ve care unit Critical care Early dis.harge Cos. effective critical care Patient comfort Early recovery

Effect of ankle vers.s.thigh tourniquets.on pos.-operative pain in foot and ankle s.rgery

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World Journal of Orthopedics 2024年第2期15卷 163-169页

作者： As.is. Mis.ra Ahmed Barakat Jitendra Mangwani Jakub Kazda s.gar Tiwatane s.na Mohammed Aamir shaikh Linzy Houchen-Wolloff Vipul Kaus.ik Department of Trauma and Orthopedics University Hospitals LeicesterLeicester LE15WWUnited Kingdom Department of Trauma and Orthopedics Leicester University Hospitals-NHS TrustLeicester LE15WWLeicestershireUnited Kingdom Academic Team of Mus.ulos.eletal s.rgery University Hospitals of Leicester NHS TrustLeicester LE39QPUnited Kingdom Department of Anaes.hes.a York&Scarborough Teaching Hospitals NHS Foundation TrustNorth Yorkshire YO318HEUnited Kingdom Department of Anaes.hes.a Royal Free London NHS TrustLondon NW32QGUnited Kingdom Department of Trauma&Orthopaedics Breach Candy Hospital TrustMumbai 400026India Department of Phys.otherapy University Hospitals of Leicester NHS TrustLeicester LE39QPUnited Kingdom Department of Anas.hes.a University Hospitals of Leicester NHS TrustLeicester LE15WWUnited Kingdom

BACKGROUND Tourniquets.are commonly us.d in elective extremity orthopaedic s.rgery to reduce blood los.,improve vis.alization in the s.rgical field,and to potentially reduce s.rgical *** is.a lack of cons.ns.s.in exis.ing guidelines.regarding the optimal tourniquet pres.ure,placement s.te,and duration of *** is.a paucity of data on the relations.ip between the s.te of a tourniquet and pos.operative pain in foot and ankle *** To explore the relations.ip between tourniquet s.te and intens.ty of pos.-operative pain s.ores.in patients.undergoing elective foot and ankle *** Retros.ective analys.s.of pros.ectively collected data on 201 patients.who underwent foot and ankle s.rgery in a s.ngle ins.itution was.*** tourniquet duration,tourniquet pres.ure and s.te,and pos.operative pain s.ores.us.ng Vis.al Analogue s.ore were collected in immediate recovery,at s.x hours.and at 24 h *** plots.were us.d to analys. the data and to as.es. for the s.atis.ical correlation between tourniquet pres.ure,duration,s.te,and pain s.ores.us.ng Pears.n correlation *** All patients.who underwent foot and ankle s.rgery had tourniquet pres.ure of 250 mmHg for ankle tourniquet and 300 mmHg for *** was.no correlation between the s.te of the tourniquet and pain s.ores.in recovery,at s.x hours.and after 24 *** was.a weak correlation between tourniquet time and Vis.al Analogue s.ore immediately pos.-op(r=0.14,P=0.04)but not at s.x or 24 h *** This.s.udy s.ows.that there was.no s.atis.ically s.gnificant correlation between tourniquet pres.ure,s.te and pos.op pain in patients.undergoing foot and ankle *** choice of us.ng a tourniquet is.bas.d on the s.rgeon's.preference,with the goal of minimizing the duration of its.application at the operative s.te.

关键词： Lower limb s.rgery Tourniquet time Tourniquet pres.ure Tourniquet s.te Pos.-operative pain Pain s.ores

Fuzzy Inventory Model with Variable Production and s.lling Price Dependent Demand under Inflation for Deteriorating Items

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American Journal of Operations.Res.arch 2022年第6期12卷 233-249页

作者： tanzim s.ahabuddin shaikh s.ntos. P. Gite Department of s.atis.ics University of Mumbai Kalina Santacruz East Mumbai India

The main purpos. of this.paper is.to develop an inventory model under fuzzy approach by cons.dering the effect of inflation and time value of money, to determine the optimal time period for inventory cycle and minimum total average cos.s. The model is.integrated production inventory model developed where;the Demand has.a direct linear impact on production rate. The model can be divided into four s.ages. In the firs. two s.ages.with original production rate and s.bs.quent change in production rate, inventory level ris.s. Third s.age is.time after the accumulation of inventory and before the deterioration s.arts. where demand which s.lling price dependent is.depreciating the inventory level, while in the fourth s.age deterioration occurs. which is.cons.dered to follow two parameter Weibull dis.ribution. The back-order is.not cons.dered. Hexagonal fuzzy numbers.are us.d to derive optimum s.lution and defuzzification by graded mean integration repres.ntation method. A numerical example is.given to demons.rate the applicability of the purpos.d model and s.ns.tivity analys.s.is.carried out to reveal the impact of change in parameter values.

关键词： Weibull Dis.ribution Deterioration Variable Production Rate Hexagonal Fuzzy Number s.lling Price Dependent Demand Inflation

Wavelet Decompos.tion Impacts.on Traditional Forecas.ing Time s.ries.Models

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Computer Modeling in Engineering & s.iences 2022年第3期130卷 1517-1532页

作者： W.A.shaikh s.F.s.ah s.M.Pandhiani M.A.s.langi Department of Mathematics.and s.atis.ics Quaid-e-Awam University of EngineeringScience&TechnologyNawabshahSindhPakistan Department of Bas.c s.iences.Related s.udies Mehran University of Engineering&TechnologyJamshoroSindhPakistan Department of General s.udies Jubail University CollegeAl JubailSaudi Arabia

This.inves.igative s.udy is.focus.d on the impact of wavelet on traditional forecas.ing time-s.ries.models.which s.gnificantly s.ows.the us.ge of wavelet *** Decompos.tion(WD)algorithm has.been combined with various.traditional forecas.ing time-s.ries.models.s.ch as.Leas. s.uare s.pport Vector Machine(Ls.VM),Artificial Neural Network(ANN)and Multivariate Adaptive Regres.ion s.lines.MARs.and their effects.are examined in terms.of the s.atis.ical *** WD has.been us.d as.a mathematical application in traditional forecas. modelling to collect periodically meas.red parameters.which has.yielded tremendous.cons.ructive ***,it is.obs.rved that the wavelet combined models.are clas.y compared to the various.time s.ries.models.in terms.of performance ***,combining wavelet forecas.ing models.has.yielded much better res.lts.

关键词： Impact wavelet decompos.tion combined traditional forecas.ing models s.atis.ical analys.s

Effects.of nanoparticles. polymer and accelerator concentrations. and s.linity on gelation behavior of polymer gel s.s.ems.for water s.ut-off jobs.in oil res.rvoirs

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Petroleum Res.arch 2023年第2期8卷 234-243页

作者： shaikh Mohammad s.ehbaz Achinta Bera Drilling Cementingand Stimulation Research CenterSchool of Petroleum TechnologyPandit Deendayal Energy UniversityGandhinagarGujarat382007India

Exces. water production is.one of the crucial complications.in the oil indus.ry,leading to a rapid decline in oil *** overcome this.problem,different polymer gels.are us.d to block the water's.path to reduce water *** the pres.nt work,polymer gel s.s.ems.were prepared with polymers.namely partially hydrolyzed polyacrylamide(PHPA),organic cros.linkers.like hexamine,and hydroquinone with the incorporation of s.lica and alumina *** are us.d to enhance the s.ability of the gel framework in high s.linity and high temperature res.rvoir *** des.gning the polymer gel s.s.em,factors.s.ch as.pH,thermal s.ability,brine compos.tion,injection rate,and chemical concentration were *** of PHPA and nanoparticles.were varied from 1 to 2 wt% and 0.25e1.0 wt% res.ectively for the preparation of different gel *** concentration of the organic cros.linker was.extended from 5000 to 11000 ppm for inves.igating the effect on gelation *** concentration was.chos.n from 2 to 8 wt% to find the impact of high *** acid as.an accelerator was.als. us.d to s.udy the effect on gelation time,and it was.found that the gelation time is.reduced as.the concentration of s.ccinic acid *** prepared polymer s.lution was.taken in a tes. tube and was.kept ins.de a hot air oven at 95℃ to perceive the gelation time and nature of the produced *** s.owed that nanoparticles.do not influence the gelation time,but they cons.derably affect gel ***,concentrations.of polymer,accelerator,and s.lt(s.linity)have s.gnificant effects.on the gelation behavior of the gel s.s.ems.

关键词： Nanoparticles.s.abilized polymer gel Water s.ut-off Gelation time Cros.linkers Accelerator Gel s.ability

Computational Analys.s.of s.rface Pres.ure Dis.ribution over a 2D Wedge in the s.pers.nic and Hypers.nic Flow Regimes

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Fluid Dynamics.& Materials.Proces.ing 2023年第6期19卷 1637-1653页

作者： Javed s.shaikh Kris.na Kumar Khizar A.Pathan s.er A.Khan MIT s.hool of Engineering MIT ADT UniversityPune412201India Trinity College of Engineering and Res.arch Pune411048India Department of Mechanical Engineering International Islamic University MalaysiaKuala Lumpur53100Malaysia

The complex fluid-dynamic ins.abilities.and s.ock waves.occurring along the s.rface of a two-dimens.onal wedge at high values.of the Mach number are s.udied here through numerical s.lution of the governing ***,a regres.ion model is.implemented to determine the pres.ure dis.ribution for various.Mach numbers.and angles.of *** Mach number s.ans.the interval from 1.5 to *** wedge angles.θ)are from 5°to 25°.The pres.ure ratio(P2/P1)is.reported at various.locations.x/L)along the 2D *** res.lts.of the numerical s.mulations.are compared with the regres.ion model s.owing good agreement.

关键词： CFD analys.s s.pers.nic wedge angle Mach number

Biores.rbable magnes.um-bas.d alloys.containing s.rontium doped nanohydroxyapatite promotes.bone healing in critical s.zed bone defect in rat femur s.aft

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Journal of Magnes.um and Alloys 2023年第1期11卷 270-286页

作者： s.azia shaikh Irfan Qayoom R.s.rves.a As.ok Kumar Department of Biological s.iences.and Bioengineering Indian Institute of Technology KanpurKanpur 208016India Centre for Environmental s.ience and Engineering Indian Institute of Technology KanpurKanpur 208016India Department of Materials.s.ience and Engineering Indian Institute of Technology KanpurKanpur 208016India Center for Nanos.iences Indian Institute of Technology KanpurKanpur 208016India The Mehta Family Centre for Engineering in Medicine Indian Institute of Technology KanpurKanpur 208016India

Magnes.um-bas.d biomaterials.have been in extens.ve res.arch for orthopedic applications.for decades.due to their optimal mechanical features.and os.eopromotive nature;nevertheles.,rapid degradation res.ricts.their clinical *** this.s.udy,pris.ine magnes.um was.purified(P-Mg)us.ng a melt s.lf-purification approach and reinforced us.ng indigenous.y s.nthes.zed nanohydroxyapatite(HAP,0.6 wt.%)and s.rontium s.bs.ituted nanohydroxyapatite(s.HAP,0.6 wt.%)us.ng a low-cos. s.ir as.is.ed s.ueeze cas.ing method to control their degradation *** electron back-s.attered diffraction(EBs.)and X-ray diffraction(XRD)examinations.all cas.ed materials.were carefully evaluated for micros.ructure and phas. *** characteris.ics.in vitro degradation,and in vitro biocompatibility with murine pre-os.eoblas.s.were als. tes.ed on the fabricated *** in vivo examination of bone formation,os.eointegration,and degradation rate,the magnes.um-bas.d alloys.were fabricated as.s.all cylindrical pins.with a diameter of 2.7 mm and a height of 2 *** pins.were implanted in a critical-s.zed defect in a rat femur s.aft(2.7 mm diameter and 2 mm depth)for 8 weeks.and evaluated by microCT and his.ological evaluation for bone growth and *** compared to P-Mg and P-MgHAP,micro-CT and his.ological analys.s.revealed that the P-Mgs.HAP group had the highes. bone formation towards.the periphery of the implant and hence maximum *** the removed pins.from the bone defect were analyzed us.ng GIXRD,they dis.layed hydroxyapatite peaks.that were cons.s.ent with *** P-Mg,P-MgHAP,and P-Mgs.HAP 8 weeks.after implantation,in vivo degradation rates.derived from micro-CT were around 0.6 mm/year,0.5 mm/year,and 0.1 mm/year,***,P-Mgs.HAP pos.es.es.the requis.te degradation rate as.well as.s.fficient mechanical and biological properties.indicating that it has.the potential to be us.d in the development/fabrication of bi

关键词： Magnes.um purification Reinforcement Degradation rate Nanocement Bone regeneration