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Evaluation of hand infections in the emergency department using point-of-care ultrasound

World Journal of Emergency Medicine 2024年第4期15卷 283-288页

作者： David Ahmad haidar David Mintz Brandon M Wubben Omar Rizvi Srikar adhikari Department of Emergency Medicine Michigan MedicineAnn Arbor 48109-1382USA University of Arizona College of Medicine Tucson 85724USA Department of Emergency Medicine University of IowaIowa City 52242-1009USA Department of Surgery University of Arizona College of MedicineTucson 85724USA Department of Emergency Medicine University of Arizona College of MedicineTucson 85724USA

BACKGROUND:We aimed to evaluate the utility of point-of-care ultrasound(POCUS)in the assessment of hand infections that present to the emergency department(ED)and its impact on medical decision making and patient ***:We conducted a retrospective review of patients who presented to two urban academic EDs with clinical presentations concerning for skin and soft tissue infections(SSTI)of the hand between December 2015 and December *** trained POCUS fellowship physicians reviewed an ED POCUS database for POCUS examinations of the *** then reviewed patients’electronic health records(EHR)for demographic characteristics,history,physical examination findings,ED course,additional imaging studies,consultations,impact of POCUS on patient care and final ***:We included a total of 50 cases(28 male,22 female)in the final *** most common presenting symptoms and exam findings were pain(100%),swelling(90%),and erythema(74%).The most common sonographic findings were edema(76%),soft tissue swelling(78%),and fluid surrounding the tendon(57%).POCUS was used in medical decision making 68%of the time(n=34),with the use of POCUS leading to changes in management 38%of the time(n=19).POCUS use led to early antibiotic use(11/19),early consultation(10/19),and led to the performance of a required procedure(8/19).The POCUS diagnosis was consistent with the discharge diagnosis of flexor tenosynovitis 8/12 times,abscess 12/16 times,and cellulitis 14/20 ***:POCUS is beneficial for evaluating of hand infections that present to the ED and can be used as an important part of medical decision making to expedite patient care.

关键词： Ultrasound Point-of-care ultrasound Cellulitis Abscess Flexor tenosynovitis

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Stem cell transplantation in cerebrovascular accidents:A global bibliometric analysis(2000-2023)

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World Journal of Stem Cells 2024年第9期16卷 832-841页

作者： Jad El Masri Ahmad Afyouni Maya Ghazi Karim Hamideh Israe Moubayed Abdo Jurjus Hanine haidar Ruzanna Petrosyan Pascale Salameh Hassan Hosseini École Doctorale Sciences de la Vie et de la Santé UniversitéParis-Est CréteilCréteil 94010France INSERM U955-E01 Institut Mondor de Recherche BiomédicaleUniversitéParis-Est CréteilCréteil 94000France Faculty of Medical Sciences Lebanese UniversityBeirut 1533Lebanon Department of Anatomy Cell Biology and Physiological SciencesFaculty of MedicineAmerican University of BeirutBeirut 1107Lebanon Department of Neurology Faculty of MedicineLebanese American UniversityBeirut 1102Lebanon Department of Pathology Faculty of MedicineLebanese American UniversityBeirut 1102Lebanon Faculty of Pharmacy Lebanese UniversityBeirut 1102Lebanon Faculty of Medicine Lebanese American UniversityBeirut 1102Lebanon Department of Primary Care and Population Health University of Nicosia Medical SchoolNicosia 2408Cyprus Institut National de SantéPublique d'Épidémiologie Clinique et de Toxicologie-Liban Beirut 1103Lebanon Department of Neurology Henri Mondor HospitalAP-HPCréteil 94000France

BACKGROUND Cerebrovascular accident(CVA)is a major global contributor to death and *** part of its medical management,researchers have recognized the importance of promising neuroprotective strategies,where stem cell transplantation(SCT)is thought to confer advantages via trophic and neuroprotective *** To evaluate the current state of research on SCT in patients with CVA,assess key trends and highlight literature *** PubMed was screened for SCT in CVA-related articles in October 2023,for each country during the period between 2000 and *** the World Bank data,total population and gross domestic product were collected for ***_1.6.19 was used to create the VOS figure using the results of the same *** and tables were obtained using Microsoft Office *** A total of 6923 studies were identified on SCT in CVA,making 0.03%of all published studies ***,68%were conducted in high-income countries,with a significant focus on mesenchymal stem *** journal“Stroke”featured the largest share of these articles,with mesenchymal SCT having the highest rate of inclusion,followed by hematopoietic *** time,there has been a noticeable shift from in vitro studies,which assess stem cell proliferation and neurogenesis,to in vivo studies aimed at evaluating efficacy and ***,the number of reviews increased along this *** This bibliometric analysis provides a comprehensive guide for physicians and researchers in the field through an objective overview of research activity,and highlights both current trends and *** a potential therapeutic role in CVA,more research is needed in the future to focus on different aspects of SCT,aiming to reach a better treatment strategy and improve life quality in patients.

关键词： Bibliometric analysis PubMed Stem cell transplantation Cerebrovascular accidents Stroke

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Effect of elevated temperature and silica sand particle size on minimum fluidization velocity in an atmospheric bubbling fluidized bed

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Chinese Journal of Chemical Engineering 2020年第12期28卷 2985-2992页

作者： A.Al-Farraji haidar Taofeeq Chemical Engineering Department College of EngineeringAl-Nahrain UniversityBaghdadIraq Prosthetics and Orthotics Engineering Department College of EngineeringAl-Nahrain UniversityBaghdadIraq

The impact of temperature and particle size on minimumfluidizing velocity was studied and analyzed in a small pilot scale of bubbling fluidized bed *** study was devoted to providing some data about fluidization to the literature under high temperature *** experiments were carried out to evaluate the minimum fluidizing velocity over a vast range of temperature levels from 20℃ to 850℃ using silica sand with a particle size of 300-425μm,425-500μm,500-600μm,and 600-710μ***,the variation in the minimumfluidized voidage was determined experimentally at the same *** experimental data revealed that the Umf directly varied with particle size and inversely with temperature,whileεmf increases slightly with temperature based on the measurements of height at incipient ***,for all particle sizes used in this test,temperatures above 700℃ has a marginal effect on *** results were compared with many empirical equations,and it was found that the experimental result is still in an acceptable range of empirical equations *** which,our findings are not well predicted by the widely accepted correlations reported in the ***,a new predicted equation has been developed that also accounts for the affecting of mean particle size in addition to other parameters.A good mean relative deviation of 5.473% between the experimental data and the predicted values was estimated from the correlation of the effective dimensionless ***,the experimental work revealed that the minimum fluidizing velocity was not affected by the height of the bed even at high temperature.

关键词： Minimum fluidization velocity Voidage Elevated temperature Silica sand Fluidized bed Bed height

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TS Fuzzy Prediction-based SVC Compensation of Wind Farms Flicker:A Dual-UKF Approach

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CSEE Journal of Power and Energy Systems 2022年第6期8卷 1594-1602页

作者： Saeedeh Ketabipour haidar Samet Navid Vafamand School of Electrical and Computer Engineering Shiraz UniversityShirazIran Department of Electrical Engineering Eindhoven University of TechnologyEindhoventhe Netherlands

Fast fluctuations in wind farm power produce voltage flicker in the *** way to mitigate the flicker is to place a static VAr compensator(SVC).Due to the operating delay of SVCs,it is essential to predict the wind farm reactive ***,a novel fuzzy nonlinear modeling approach is suggested and used in the one-step-ahead prediction of the power *** base of the developed fuzzy modeling is the Takagi-Sugeno fuzzy representation and a dual-unscented Kalman filter(D-UKF).In other words,a nonlinear TS fuzzy system is trained online via the *** forecasted value is used as the SVC’s reference signal.A large amount of actual data gathered from a wind farm is used for the performance *** data is collected in winter and summer for different climate *** the actual data,a current source with changing amplitude and phase which is updated every half-cycle,is used to model the wind *** results,including the flicker indices,confirm the improvement in the SVC’s performance.

关键词： SVC voltage flicker wind farm

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Comparison between the new mechanistic and the chaos scale-up methods for gas-solid fluidized beds

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Chinese Journal of Chemical Engineering 2018年第6期26卷 1401-1411页

作者： haidar Taofeeq Muthanna AI-Dahhan Multiphase Reactors Engineering and Applications Laboratory (mReal) Department of Chemical & Biochemical Engineering Missouri University of Science & Technolog y Rolla MO 65409 USA Chemical Engineering Department College of Engineering AI-Nahrain University Baghdad Iraq Cihan University. Erbil Iraq Prosthetics and Orthotics Engineering Department College of Engineering AI-Nahrain University Baghdad Iraq

The chaotic scale-up approach by matching the Kolmogorov entropy(E_K) proposed by Schouten et al.(1996) was assessed in two geometrically similar gas–solid fluidized bed columns of 0.14 and 0.44 m *** used four conditions of our validated new mechanistic scale-up method based on matching the radial profiles of gas holdup where the local dimensionless hydrodynamic parameters were similar as measured by advanced measurement *** experimental conditions were used to evaluate the validity of the chaotic scale-up method,which were selected based on our new mechanistic scale-up *** gauge transducer measurements at the wall and inside the bed at various local radial locations and at three axial heights were used to estimate *** was found that the experimental conditions with similar or close radial profiles of the Kolmogorov entropy and with similar or close radial profiles of the gas holdup achieve the similarity in local dimensionless hydrodynamic parameters,and vice versa.

关键词： Scale-up Chaotic analysis approach New scale-up methodology Kolmogorov entropy Gas–solid fluidized bed

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Hierarchical assemblies of molecular frameworks—MOF-on-MOF epitaxial heterostructures

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Nano Research 2021年第2期14卷 355-368页

作者： Ritesh haidar Christof Woll Institute of Functional Interfaces(IFG) Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz176344 Eggenstein-LeopoldshafenGermany

Functional,porous metal-organic frameworks(MOFs)have attracted much attention as a very flexible class of crystalline,porous *** more advanced applications that exploit photophysical properties,the fabrication of hierarchical assemblies,including the creation of MOF/MOF heterointerfaces,is *** the manufacturing of superstructures with length scales well beyond that of the MOF pore size,layer-by-layer(Ibl)methods are particularly *** allow the isoreticular approach to be extended to superstructures with micrometer length scales,a range that is not accessible using conventional MOF *** Ibl approach further substantially extends the compositional diversity in *** the same time,the favorable elastic properties of MOFs allow for heteroepitaxial growth,even in the case of lattice misfits as large as 20%.While the MOF-on-MOF approach to designing multicomponent superstructures with synergistic multifunctionality can also be realized with sophisticated solvothermal synthesis schemes,the Ibl(or liquid-phase epitaxy)approach carries substantial advantages,in particular when it comes to the integration of such MOF superstructures into optical or electronic *** the structure vertical to the substrate can be adjusted using the Ibl method,photolithographic methods can be used for lateral *** this review,we will discuss the Ibl liquid-phase epitaxy approach to growing surface-anchored MOF thins films(SURMOFs)as well as other relevant one-pot synthesis methods for constructing such hierarchically designed structures and their emerging applications.

关键词： metal-organic framework(MOF)heterostaicture hierarchical assembly epitaxy layer-by-layer growth surface-anchored MOFs

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Effective Controlled Islanding Method for Power Grids Solving a Sequence of Optimization Problems

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CSEE Journal of Power and Energy Systems 2022年第4期8卷 1004-1012页

作者： Mahdi amini haidar Samet Ali Reza Seifi Mahdi Davarpanah School of Electrical and Computer Engineering Shiraz UniversityShirazIran Department of Electrical Engineering Eindhoven University of TechnologyEindhoventhe Netherlands the Electrical and Computer Engineering School College of EngineeringUniversity of TehranTehranIran

Controlled islanding is an important approach to prevent instability in power *** this paper,a novel approach is proposed for power system separation,which consists of two steps:1)Finding multiple islanding scenarios;2)Choosing the best option to obtain the most desirable *** the first step,different islanding solutions are determined by a proposed hierarchical clustering *** this algorithm,which is based on a minimum active power flow disruption objective function,the generator coherency constraints are considered in the clustering *** the second step,the best separation scenario is chosen based on an arbitrary objective ***,in this paper,the amount of load shedding and the voltage profile deviation after separation are considered as the final criteria to select the best solution among available *** so doing,the degree of load importance is also taken into *** proposed two-step method is applied on an IEEE 9-bus test system and it is also evaluated on an IEEE 39-bus *** simulation results on the IEEE 39-bus grid and the comparative analysis with a state-of-the-art method confirm that the final islanding solution is more optimized based on the secondary criteria,which have not been addressed in the existing ***,the proposed method is computationally efficient and can be employed in real-scale power grids.

关键词： Graph theory hierarchical spectral clustering power system separation power system instability two-step approach.

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Factors influencing adherence to the food by prescription program among adult HIV positive patients in addis Ababa, Ethiopia: a facility-based, cross-sectional study

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Infectious Diseases of Poverty 2014年第1期3卷 182-191页

作者： Mesrach Ayalew Kebede Jemal haidar St.Paul’s Hospital Millennium Medical College Addis AbabaEthiopia School of Public Health Addis Ababa UniversityP.O.Box 27285/1000Addis AbabaEthiopia

Background:One way of addressing malnutrition among HIV/AIDS patients is through the Food by Prescription program(FBP)and many studies have explained the treatment outcomes after therapeutic food supplementation,though available evidences on adherence levels and factors associated with these sorts of programs are *** findings of this study would therefore contribute to the existing knowledge on adherence to Ready-to-Use Therapeutic/Supplementary Food(RUF)in ***:A facility-based,cross-sectional study supplemented with qualitative methods was conducted among 630 adult HIV+*** level of adherence to RUF was measured using the Morisky 8-item Medication adherence Scale(MMAS-8).The total score on the MMAS-8 ranges from 0 to 8,with scores ofadherence,*** who had a low or a moderate rate of adherence were considered ***:The level of adherence was found to be 36.3%with a 95.0%response *** the exception of the educational status,other socio-demographic variables had no significant effect on *** who knew the benefits of the FBP program were 1.78 times more likely to adhere to the therapy than the referent *** the other hand,patients who were not informed on the duration of the treatment,those prescribed with more than 2 sachets/day and had been taking RUF for more than 4 month were less likely to *** main reasons for non-adherence were not liking the way the food tasted and missing follow-up *** and sharing and selling food were the other reasons,as deduced from the focus group discussion(FGD)***:The observed level of adherence to the FBP program among respondents enrolled in the intervention program was *** major factors identified with a low adherence were a low level of education,poor knowledge on the benefits of RUF,the longer duration of the program,consuming more than two prescribed sachets of

关键词： Factors adherence Food by prescription program HIV positive addis Ababa Ethiopia

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Evaluation of climate change effects on extreme flows in a catchment of western Iran

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Frontiers of Earth Science 2019年第3期13卷 523-534页

作者： Soheila SAFARYAN Mohsen TAVAKOLI Noredin ROSTamI haidar EBRAHEVH Department of Natural Resources Ilam UniversityDam 69315516Iran Department of Watershed Management Faculty of Natural Resources and Earth SciencesUniversity of KashanKashan ***Iran

Investigation of the relationship between catchment hydrology with climate is essential for understanding of the impact of future climate on hydrological extremes, which may cause frequent flooding, drought, and shortage of water supply. The purpose of this study is to investigate the effects of climate change on extreme flows in one of the subcatchments of the Ilam dam catchment, Iran. The changes in climate parameters were predicted using the outputs of HadCM3 model for up to the end of the current century in three time periods including 2020s, 2050s, and 2080s. For A2 scenario, increases of 1.09℃, 2.03℃, and 3.62℃, and for B2 scenario rises of 1.18℃, 1.84℃, and 2.55℃ have been predicted. The results suggest that for A2 scenario, the amount of precipitation would decrease by 12.63, 49.13, and 63.42 and for B2 scenario by 47.02,48.51, and 70.26 mm per year. Also the values of PET for A2 scenario would increase by 51.18, 101.47 and 108.71 and for B2 scenario by 60.09, 89.86, and 124.32 mm per year. The results of running the SWAT model revealed that the average annual runoff would decrease by 0.11, 0.41, and 0.61 m3/s and for B2 scenario by 0.39, 0.47, and 0.59 m3/s. The extreme flows were then analyzed by running WETSPRO model. According to the results, the amounts of low flows for A2 scenario will decrease by 0.02, 0.21 and 0.33 m^3/s and for B2 scenario by 0.19, 0.26 and 0.29 m^3/s in the 2020s, 2050s and 2080s, respectively. On the other hand, the results show an increase of peak flows by 11.5, 19.1 and 48.7 m^3/s in A2 scenario and 11.12, 25.93 and 48.1 m^3/s in B2 scenario, respectively. Overall, the results indicated that an increase in return period leads to elevated levels of high flows and diminished low flows.

关键词： climate change extreme flows Ilam dam watershed Iran

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On the Marchenko System and the Long-time Behavior of Multi-soliton Solutions of the One-dimensional Gross-Pitaevskii Equation

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Journal of Partial Differential Equations 2015年第2期28卷 167-196页

作者： MOHamad haidar Departement de Mathematiques Universite Paris-Sud 11 F-91405 Orsay Cedex.

We establish a rigorous well-posedness results for the Marchenko system associated to the scattering theory of the one dimensional Gross-Pitaevskii equation （GP）. Under some assumptions on the scattering data, these well-posedness results provide regular solutions for （GP）. We also construct particular solutions, called N- soliton solutions as an approximate superposition of traveling waves. A study for the asymptotic behaviors of such solutions when t-→±∞ is also made.

关键词： Non-linear Schr6dinger equation Gross-Pitaevskii equation.

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