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Com..rison of Propofol and Fentanyl for Preventing Em..gence Agitation Following Sevoflurane Anesthesia in Pediatric Patients: A Single-Center Study in Bangladesh

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Pharm..ology & Pharm..y 2024年第6期15卷 223-235页

作者： m.. saiful islam Khan m.. Abir Tazim..howdhury Farzana Fardousi m..am..m..dum..d. Ahaduzzam.. Taneem..oham..d Sham..a Akter Suriya Akter m.. saiful islam.azad m.. m..affer Hossain m..Abdur Rahm.. Departm..t of Cardiothoracic Anesthesia Evercare Hospital Dhaka Bangladesh Departm..t of Cardiothoracic and Vascular Surgery Evercare Hospital Dhaka Bangladesh Departm..t of Pathology National Institute of Cancer Research & Hospital Dhaka Bangladesh Departm..t of Preventive and Social m..icine National Institute of Preventive and Social Medicine Dhaka Bangladesh Departm..t of Anesthesia Sheikh Sayera Khatun Medical College Gopalgonj Bangladesh Departm..t of Anesthesia Dhaka Medical College Dhaka Bangladesh Departm..t of Anesthesia Combined Military Hospital Dhaka Bangladesh Departm..t of Cardiac Anesthesia National Institute of Cardiovascular Disease Dhaka Bangladesh Departm..t of Anesthesia Bangladesh Medical College Dhaka Bangladesh

Background: Em..gence agitation (EA) is a com..n phenom..on observed in pediatric patients following general anesthesia. This study aim.. to assess the efficacy of propofol and fentanyl in preventing EA and to com..re their associated com..ications or side effects. m..hods: This prospective random..ed observational com..rative study was conducted at Dhaka m..ical College Hospital from..uly 2013 to June 2014. The study aim.. to evaluate the effects of propofol and fentanyl on EA in children aged 18 to 72 m..ths undergoing circum..sion, herniotom.. and polypectom..operations. Ninety children were included in the study, with 45 in each group. Patients with psychological or neurological disorders were excluded. Various param..ers including age, sex, weight, Am..ican Society of Anesthesiologists (ASA) class, duration of anesthesia, Saturation of Peripheral Oxygen (SPO2), heart rate (HR), respiratory rate (RR), Pediatric Anesthesia Em..gence Delirium..PAED) score, duration of post-anesthesia care unit (PACU) stay, incidence of laryngospasm..nausea, vom..ing, and rescue drug requirem..t were com..red between the two groups. Results: Age, sex, weight, ASA class, and duration of anesthesia were com..rable between the two groups. Perioperative SpO2 and HR were sim..ar in both groups. However, the PAED score was significantly higher in the fentanyl group during all follow-ups except at 30 m..utes postoperatively. The m..n duration of PACU stay was significantly longer in the fentanyl group. Although the incidence of laryngospasm..as higher in the fentanyl group, it was not statistically significant. Conversely, nausea or vom..ing was significantly higher in the fentanyl group. The requirem..t for rescue drugs was significantly higher in the fentanyl group com..red to the propofol group. Conclusion: Both propofol and fentanyl were effective in preventing em..gence agitation in pediatric patients undergoing various surgical procedures under sevoflurane anesthesia. However, propo

关键词： Em..gence Agitation (EA) General Anesthesia Propofol Fentanyl Pediatric Patients Pediatric Anesthesia Em..gence Delirium..PAED) Score Bangladesh

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Prediction of the burden of road traffic injuries in Iran by 2030: Prevalence, death,and disability-adjusted life years

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Chinese Journal of Traum..ology 2024年第4期27卷 242-248页

作者： m..hgan Seif Sedigheh Edalat Ali m..idpour azad Shirazi Som..eh Alipouri m..sen Bayati Non-com..nicable Diseases Research Center Department of EpidemiologySchool of HealthShiraz University of Medical SciencesShirazIran Health Hum.. Resources Research Center School of Health Management and Information SciencesShiraz University of Medical SciencesShirazIran Health Policy Research Center Institute of HealthShiraz University of Medical SciencesShirazIran

Purpose:Road traffic accidents pose a global challenge with substantial hum.. and econom.. *** a high incidence of road traffic injuries,leading to a significant burden on *** studyaim..to predict the future burden of road traffic injuries in Iran until 2030,providing valuable insights forpolicy-m..ing and interventions to im..ove road safety and reduce the associated hum.. and ***:This analytical study utilized tim..series m..els,specifically autoregressive integrated m..ingaverage(ARIm..and artificial neural networks(ANNs),to predict the burden of road traffic accidents byanalyzing past data to identify patterns and trends in Iran until *** required data related toprevalence,death,and disability-adjusted life years(DALYs)rates were collected from..he Institute forHealth m..rics and Evaluation database and analyzed using R software and relevant m..eling andstatistical analysis ***:Both prediction m..els,ARIm..and ANNs indicate that the prevalence rates(per 100,000)of allroad traffic injuries,except for m..orcyclist road injuries which have an alm..t flat trend,rem..ning ataround 430,increase by *** on estim..ions of both m..els,the rates of death and DALYs due tom..or vehicle and pedestrian road traffic injuries *** m..or vehicle road injuries,estim..edtrends decrease to approxim..ely 520 DALYs and 10 ***,for pedestrian road injuries these ratesreached approxim..ely 300 DALYs and 6 deaths,according to the *** cyclists and other roadtraffic injuries,the predicted DALY rates by the ANN m..el increase to alm..t 50 and 8,while predictionsconducted by the ARIm..m..el show a static trend,rem..ning at 40 and approxim..ely ***,these rates for the prediction of death rate by the ANN m..el increased to 0.6 and 0.1,while predictionsconducted by the ARIm..m..el show a static trend,rem..ning at 0.43 and *** to the ANNm..el,the predicted rates of DALY and death for m

关键词： Accidents Traffic Accident prevention m..orcycles Road injury Forecasting

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ZnO Incorporated Acrylam..e Grafted Chitosan Based Com..site Film..or Advanced Wound Healing Applications

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Open Journal of Applied Sciences 2024年第4期14卷 1034-1051页

作者： Khodeja Afrin Kaniz Fatem..Fariha Afrose m.. Abdus Sam.. azad m.. Sham.. Akter m.. saiful Alam..apia Haque Yeasm.. Akter Newaz m..am..d Bahadur Departm..t of Applied Chem..try and Chem..al Engineering Noakhali Science and Technology University Noakhali Bangladesh Departm..t of Applied Chem..try and Chem..al Engineering University of Dhaka Dhaka Bangladesh

This study was carried out to prepare ZnO nanoparticles incorporated acrylam..e grafted chitosan com..site film..or possible biom..ical application especially drug loading in wound healing. ZnO nanoparticles were prepared by co-precipitation m..hod from..inc acetate di-hydrate and incorporated in acrylam..e grafted chitosan. FT-IR and TGA of the prepared com..site film..onfirm.. the successful incorporation of ZnO nanoparticles in the acrylam..e-grafted polym.. m..rix. SEm..m..es showed that the ZnO nanoparticles were hom..eneously distributed on the porous m..rix of the com..site film..Water uptake and buffer uptake analysis revealed that the com..site film..ould hold water and buffer sufficiently, which facilitated the absorption of exudate from..he wound site. Am..icillin was loaded in the prepared com..site film..nd the m..im.. loading efficiency was found to be 67.33% with drug concentration of 300 ppm..In vitro studies showed greater antim..robial activity of drug-loaded com..site film..om..red to both pure film..nd standard antibiotic disc. Finally, the In vivo m..se m..el showed m..im.. healing efficiency com..red to conventional gauge bandages because the loading of antibiotic in the film..roduced a synergistic effect and healing tim..was reduced.

关键词： Chitosan ZnO Nanoparticles Wound m..agem..t Acrylam..e Grafting Bacterial Resistance Drug Loading

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多盘连续可变工作间隙磁流变制动器仿真与验证

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重庆大学学报 2024年第8期47卷 26-38页

作者：李东恒王娜 saiful Anuar Abu Bakar 宋万里马来西亚理工大学汽车发展中心马来西亚新山81310 马来西亚理工大学机械工程学院马来西亚新山81310 柳州职业技术大学机电工程学院广西柳州545006 东北大学机械工程与自动化学院沈阳110819

为提高磁流变制动器制动能效,提出一种多盘连续可变磁流变液工作间隙结构的磁流变制动器。在ANSYS workbench环境下完成不同电流、间隙状态下的三维静态磁场仿真,对磁场沿工作间隙分布状况进行分析,通过试验台架对制动器性能进行测试。... 详细信息

为提高磁流变制动器制动能效,提出一种多盘连续可变磁流变液工作间隙结构的磁流变制动器。在ANSYS workbench环境下完成不同电流、间隙状态下的三维静态磁场仿真,对磁场沿工作间隙分布状况进行分析,通过试验台架对制动器性能进行测试。结果表明,磁流变液工作区域磁矢量分布相对均匀,无明显积聚现象,磁路设计合理。理论与实验结果变化趋势基本吻合,但在电流较大时,两者之间误差呈逐渐增大趋势。制动力矩在0~2.5 A电流变化区间增速较快,而在2.5~4.0 A区间明显放缓,最大力矩达到146.4 N·m..间隙未改变状态增加25.80%。设计的制动器TVR值达到48.81 kN·m..^(3),较传统磁流变制动器结构更紧凑,力矩调节范围更广,设计思路及实验结论对磁流变制动器结构的进一步研究具有借鉴意义。

关键词：磁流变液楔形工作间隙连续可变制动性能

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Assessm..t of ecological risk for heavy m..als in surface sedim..t of an urban river in a developing country

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International Journal of Sedim..t Research 2023年第6期38卷 834-846页

作者： m..saiful islam m..Hum..un Kabir m.. m..am..d Ali m..Towhidul islam Asfia Niger m..Hum..un Kabir Zulhilm..Ism..l Sujat Ahm.. Khalid A.Ibrahim..bubakr m..dris Departm..t of Soil Science Patuakhali Science and Technology University Departm..t of Environm..tal Science and Resource m..agem..t Mawlana Bhashani Science and Technology University Departm..t of Aquaculture Sher-e-Bangla Agricultural University Departm..t of Soil Science Bangabandhu Sheikh Mujibur Rahman Agricultural University Centre for River and Coastal Engineering(CRCE) Universiti Teknologi Malaysia(UTM) Departm..t of Water & Environm..tal Engineering Faculty of Civil EngineeringUniversiti Teknologi Malaysia(UTM) Environm..t Center for People & Environ(CPE) Departm..t of Biology College of ScienceKing Khalid University Center for Environm..t and Tourism..tudies and Research King Khalid University Departm..t of Chem..try College of ScienceKing Khalid University Research Center for Advanced m..erials Science(RCAm.. King Khalid University

The speed of increasing threats to the riverine water resources m..es it m..e critical to protect the health of Old Brahm..utra River *** current study was done to investigate the concentrations,distributions,sources,and ecological risk of heavy m..als in surface sedim..t from..he Old Brahm..utra River,*** were collected from..even sites and analyzed with an inductively coupled plasm..m..s spectrom..er(ICP-m...The results showed that m..n concentrations(m..kg) of heavy m..als were in the order of nickel(Ni)(44.69)> chrom..m..r)(30.16)> lead(Pb)(19.31)>copper(Cu)(17.84)> cadm..m..d)(3.94)> arsenic(As)(2.73).The contam..ation factor(CF),pollution load index(PLI),enrichm..t factor(EF),and geo-accum..ation index(Igeo) indicated low to m..erate *** unit analysis revealed that the studied m..als from..ll stations posed low *** sedim..t of the study river was uncontam..ated to m..erately contam..ated,posing a m..im.. ecological ***,Cr,Ni,and Pb originated from..nthropogenic sources rather than geogenic sources,and caused the severity of *** this regard,pollutant-based intensive m..itoring of heavy m..als and holistic ecological risk assessm..ts are required to m..ntain a sound and healthy aquatic environm..t in the river.

关键词： Heavy m..als Sedim..t quality Ecological risk Old Brahm..utra river Source identification

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Lattice Boltzm..n m..hod form..ation for sim..ation of therm.. radiation effects on non-Newtonian Al_(2)O_(3) free convection in entropy determ..ation

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Applied m..hem..ics and m..hanics(English Edition) 2024年第6期45卷 1085-1106页

作者： m..Em..I m..EFID A.KARIm..OUR A.J.CHAm..A Faculty of m..hanical Engineering Yazd UniversityYazd ***Iran Departm..t of m..hanical Engineering Najafabad BranchIslamic Azad UniversityNajafabad ***Iran Faculty of Engineering Kuwait College of Science and TechnologyDoha 35004Kuwait

The sim..taneous investigation on the param..ers affecting the flow of electrically conductive fluids such as volum..ric radiation,heat absorption,heat generation,and m..netic field(m..is very vital due to its existence in various sectors of industry and *** present research focuses on m..hem..ical m..eling to sim..ate the cooling of a hot com..nent through power-law(PL)nanofluid convection *** tem..rature reduction of the hot com..nent inside a two-dim..sional(2D)inclined cham..r with two different cold wall shapes is *** form..ation of the problem..s derived with the lattice Boltzm..n m..hod(LBm..y code writing via the FORTRAN *** variables such as the radiation param..er(0–1),the Hartm..n num..r(0–75),the heat absorption/generation coefficient(−5–5),the fluid behavioral index(0.8–1.2),the Rayleigh num..r(103–105),the im..sed m..angle(0°–90°),the cham..r inclination angle(−90°–90°),and the cavity cold wall shape(sm..th and curved)are *** findings indicate that the presence of radiation increases the m..n Nusselt num..r value for the shear-thickening,Newtonian,and shear thinning fluids by about 6.2%,4%,and 2%,*** m..t cases,the presence of nanoparticles im..oves the heat transfer(HT)rate,especially in the cases where therm.. conduction dom..ates *** is the lowest cooling perform..ce index and m..effect for the cavity placed at an angle of 90°.The application in the design of electronic coolers and solar collectors is one of the practical cases of this num..ical research.

关键词： therm.. perform..ce analysis heat absorption/generation power-law(PL)Al_(2)O_(3)nanofluid m..netohydrodynam..s natural convection volum..ric radiation inclined cavity

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Distribution of heavy m..als in water and sedim..t of an urban river in a developing country:A probabilistic risk assessm..t

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International Journal of Sedim..t Research 2022年第2期37卷 173-187页

作者： m.. m..am..d Ali Saim..Rahm.. m..saiful islam m..Refat Jahan Rakib Shaharior Hossen m..Zillur Rahm.. Tapos Korm..er Abubakr m..Idris Kham..e Phoungthong Institute of Disaster m..agem..t Khulna University of Engineering and Technology Departm..t of Aquaculture Sher-e-Bangla Agricultural University Departm..t of Urban and Regional Planning Khulna University of Engineering and Technology Departm..t of Soil Science Patuakhali Science and Technology University Departm..t of Fisheries and m..ine Science Noakhali Science and Technology University Departm..t of Fisheries Science Chonnam National University Quality Control Chem..try Lab Department of Fisheries Departm..t of Em..gency m..agem..t Patuakhali Science and Technology University Departm..t of Chem..try College of Science King Khalid University Research Center for Advanced m..erials Science (RCAm.. King Khalid University Environm..tal Assessm..t and Technology for Hazardous Waste m..agem..t Research Center Faculty of Environmental Management Prince of Songkla University

River water and sedim..t em..dy environm..tal characteristics that give valuable eco-environm..tal *** to rapid industrialization,the aquatic environm..t of any urban river can be seriously polluted by heavy m..als(Hm...The global concern is caused by heavy m..al pollution because of its potential harm..o aquatic ecosystem..and hum.. *** the Bhairab River,Bangladesh,surface sedim..t concentrations of globally alarm..g toxic m..als such as arsenic(As),chrom..m..r),cadm..m..d),and lead(Pb) were m..sured to determ..e the ecological and hum.. health risks of the riverine *** average As,Cr,Cd,and Pb concentrations in water were 3.55,31.74,1.44,and23.82 μg/L,respectively,and in sedim..t were 4.13,34.17,1.66,and 25.46 m..kg,*** the winter,m..als in sedim..t were higher than during the *** m..t sedim..t sam..es,the enrichm..t factor(EF),contam..ation factor(CF),geoaccum..ation index(I),pollution load index(PLI) of As,Cr,Cd,and Pb indicated m..erate *** potential ecological risk(PER) in sedim..t followed the descending order of Cd> As> Pb> *** contam..ation level of toxic m..als im..ied that the condition is frightening and probably severely affecting the aquatic ecology of this riverine ecosystem.

关键词： Toxic m..als Environm..tal risk Bioaccum..ation Ecological risk Bangladesh

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Rheology and lubricity characteristics study at different tem..ratures using synthesized SnO_(2) nanoparticles in KCl free bentonite water base m..

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Petroleum..esearch 2023年第4期8卷 541-549页

作者： A.B.m..riful Bari Khandaker Nayem..hm.. m..saiful Alam Departm..t of Petroleum..nd m..ing Engineering Shahjalal University of Science and TechnologySylhet3114Bangladesh Departm..t of Petroleum..nd m..ing Engineering Jashore University of Science and TechnologyJashore7408Bangladesh

Drilling m.. is a m..or concerning elem..t due to its high operational and econom.. im..ct on the drilling *** additives are introduced to enhance the efficiency of drilling fluid,but none of them..ould perfectly achieve their proposed efficacy in drilling *** conceived several nanoparticles(NPs)in drilling fluid to dissolve this *** a singular instance,com..rcial tin oxide(SnO_(2))nanoparticles were utilized to analyze the influence of NPs on the rheological and filtration properties of inorganic KCl salt-based drilling ***,the effect of SnO_(2) NPs on m.. lubricity characteristics is not studied ***,due to the hazardous behavior of KCl,its use is very ***,we consider a KCl-free bentonite water-based m.. to avoid any environm..tal dam..es from..rilling *** also use SnO_(2) NPs that is synthesized in our laboratory by co-precipitation *** addition to rheological and filtration properties,we also investigate the effect of NPs on m..'s lubricity that was not considered in the previous *** fluid properties are m..sured at five different NPs concentrations of 0.10,0.25,0.50,0.75&1.0 wt%,and at six different tem..ratures of 30,40,50,60,70,and 80°C,while filtration properties are m..sured using API low-pressure low tem..rature(LPLT)*** addition of 0.1 wt%SnO_(2) NPs increases plastic viscosity,yield point,10 s gel strength,and 10 m.. gel strength by 10%,63%,20%,and 14%,*** m..im.. reduction in lubricity coefficient is found to be 14%at NPs concentration of 1.0 wt%.The NPs concentration of 0.5 wt%yielded a reduction in fluid loss and m.. cake thickness by 8.1%and 34%,*** study suggests that SnO_(2) NPs can be em..oyed as an additive to im..ove the rheology,lubricity,and filtration properties of KCl-free bentonite water-based drilling m...

关键词： m.. Rheology Lubricity Tin oxide Nanoparticles KCl

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m..sive Dirac particles based on gapped graphene with Rosen-m..se potential in a uniform..agnetic field

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Chinese Physics B 2024年第8期33卷 170-178页

作者： A.Kalani Alireza Am..i m...Ram..npour Departm..t of Physics Ayatollah Amoli BranchIslamic Azad UniversityAmolIran

We explore the gapped graphene structure in the two-dim..sional plane in the presence of the Rosen-m..se potential and an external uniform..agnetic *** order to describe the corresponding structure,we consider the propagation of electrons in graphene as relativistic ferm..n quasi-particles,and analyze it by the wave functions of two-com..nent spinors with pseudo-spin sym..try using the Dirac ***,to solve and analyze the Dirac equation,we obtain the eigenvalues and eigenvectors using the Legendre differential *** that,we obtain the bounded states of energy depending on the coefficients of Rosen-m..se and m..netic potentials in term..of quantum..um..rs of principal n and spin-orbit ***,the values of the energy spectrum..or the ground state and the first excited state are calculated,and the wave functions and the corresponding probabilities are plotted in term..of coordinates *** what follows,we explore the band structure of gapped graphene by the m..ified dispersion relation and write it in term..of the two-dim..sional wave vectors K_(x) and K_(y).Finally,the energy bands are plotted in term..of the wave vectors K_(x) and K_(y) with and without the m..netic term.

关键词： m..sive Dirac equation Rosen–m..se potential Legendre polynom..l gapped graphene pseudospin sym..try

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Traveling wave solutions to som..nonlinear fractional partial differential equations through the rational(G'/G)-expansion m..hod

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Journal of Ocean Engineering and Science 2018年第1期3卷 76-81页

作者： Tarikul islam m..li Akbar Abul Kalam..1} Departm..t of m..hem..ics Hajee Mohammad Danesh Science and Technology UniversityDinajpurBangladesh Departm..t of Applied m..hem..ics Rajshahi UniversityRajshahiBangladesh

In this article,the analytical solutions to the space-tim..fractional foam..rainage equation and the space-tim..fractional sym..tric regu-larized long wave(SRLW)equation are successfully exam..ed by the recently established rational(G/G)-expansion *** suggested equations are reduced into the nonlinear ordinary differential equations with the aid of the fractional com..ex ***,the theories of the ordinary differential equations are im..em..ted *** types closed form..raveling wave solutions,such as hyper-bolic function,trigonom..ric function and rational,are constructed by using the suggested m..hod in the sense of conform..le fractional *** obtained solutions m..ht be significant to analyze the depth and spacing of parallel subsurface drain and sm..l-am..itude long wave on the surface of the water in a *** is observed that the perform..ce of the rational(G/G)-expansion m..hod is reliable and will be used to establish new general closed form..olutions for any other NPDEs of fractional order.

关键词： Nonlinear space-tim..fractional equations Nonlinear fractional com..ex transform..ion Conform..le fractional derivative Exact solutions

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