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World Journal of Critical Care Medicine 2024年第2期13卷 126-136页

作者： Anosh Aslam Khan Hasham Saeed Ibtehaj Ul Haque ayman iqbal Doantrang Du Abhilash Koratala Department of Internal Medicine Monmouth Medical CenterLong BranchNJ 07740United States Department of Internal Medicine Trinitas Regional Medical CenterElizabethNJ 07202United States Department of Anesthesiology Dr.Ruth K M Pfau Civil HospitalKarachi 74400Pakistan Department of Internal Medicine Dow Medical CollegeKarachi 74200Pakistan Division of Nephrology Medical College of WisconsinMilwaukeeWI 53226United States

Point-of-care ultrasonography(POCUS),particularly venous excess ultrasound(VExUS)is emerging as a valuable bedside tool to gain real-time hemodynamic *** modality,derived from hepatic vein,portal vein,and intrarenal vessel Doppler patterns,offers a scoring system for dynamic venous congestion *** an assessment can be crucial in effective management of patients with heart failure *** facilitates diagnosis,quantification of congestion,prognostication,and monitoring the efficacy of decongestive *** such,it can effectively help to manage cardiorenal syndromes in various clinical *** or eVExUS explores additional veins,potentially broadening its *** VExUS demonstrates promising outcomes,challenges persist,particularly in cases involving renal and liver parenchymal disease,arrhythmias,and situations of pressure and volume overload *** in utilizing spectral Doppler is pivotal for clinicians to effectively employ this ***,the integration of POCUS,especially advanced applications like VExUS,into routine clinical practice necessitates enhanced training across medical specialties.

关键词： Point-of-care ultrasonography Ultrasound Venous excess ultrasound Doppler Congestion Heart failure

Anticoagulant use before COVID-19 diagnosis prevent COVID-19 associated acute venous thromboembolism or not:A systematic review and meta-analysis

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World Journal of Methodology 2024年第3期14卷 141-162页

作者： Kinza iqbal Akshat Banga Taha Bin Arif Sawai Singh Rathore Abhishek Bhurwal Syeda Kisa Batool Naqvi Muhammad Mehdi Pankaj Kumar Mitali Madhu Salklan ayman iqbal Jawad Ahmed Nikhil Sharma Amos Lal Rahul Kashyap Vikas Bansal Juan Pablo Domecq Department of Internal Medicine Dow Medical CollegeKarachi 74200Pakistan Department of Internal Medicine Sawai Man Singh Medical CollegeJaipur 302004India Department of Internal Medicine Dr.Sampurnanand Medical CollegeJodhpur 342003RajasthanIndia Department of Gastroenterology and Hepatology Rutgers Robert Wood Johnson School of MedicineNew BrunswickNJ 08901United States Department of Internal Medicine Pandit Bhagwat Dayal Sharma Post Graduate Institute of Medical SciencesRohtak 124001HaryanaIndia Department of Nephrology and Hypertension Mayo ClinicRochesterMN 55905United States Department of Medicine Division of Pulmonary and Critical Care MedicineMayo ClinicRochesterMN 55905United States Department of Research Wellspan HealthYorkPA 17403United States

BACKGROUND Coagulopathy and thromboembolic events are associated with poor outcomes in coronavirus disease 2019(COVID-19)*** is conflicting evidence on the effects of chronic anticoagulation on mortality and severity of COVID-19 *** To summarize the body of evidence on the effects of pre-hospital anticoagulation on outcomes in COVID-19 *** A Literature search was performed on LitCovid PubMed,WHO,and Scopus databases from inception(December 2019)till June 2023 for original studies reporting an association between prior use of anticoagulants and patient outcomes in adults with *** primary outcome was the risk of thromboembolic events in COVID-19 patients taking *** outcomes included COVID-19 disease severity,in terms of intensive care unit admission or invasive mechanical ventilation/intubation requirement in patients hospitalized with COVID-19 infection,and *** random effects models were used to calculate crude and adjusted odds ratios(aORs)with 95%confidence intervals(95%CIs).RESULTS Forty-six observational studies met our inclusion *** unadjusted analysis found no association between prior anticoagulation and thromboembolic event risk[n=43851,9 studies,odds ratio(OR)=0.67(0.22,2.07);P=0.49;I2=95%].The association between prior anticoagulation and disease severity was non-significant[n=186782;22 studies,OR=1.08(0.78,1.49);P=0.64;I2=89%].However,pre-hospital anticoagulation significantly increased all-cause mortality risk[n=207292;35 studies,OR=1.72(1.37,2.17);P<0.00001;I2=93%].Pooling adjusted estimates revealed a statistically non-significant association between pre-hospital anticoagulation and thromboembolic event risk[aOR=0.87(0.42,1.80);P=0.71],mortality[aOR=0.94(0.84,1.05);P=0.31],and disease severity[aOR=0.96(0.72,1.26);P=0.76].CONCLUSION Prehospital anticoagulation was not significantly associated with reduced risk of thromboembolic events,improved survival,and lower disease seve

关键词： Prior anticoagulation COVID-19 Prehospital anticoagulation Chronic anticoagulation Mortality Severity Thromboembolic events

A Fault-Handling Method for the Hamiltonian Cycle in the Hypercube Topology

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Computers, Materials & Continua 2021年第7期68卷 505-519页

作者： Adnan A.Hnaif Abdelfatah A.Tamimi ayman M.Abdalla iqbal Jebril Faculty of Science and Information Technology Al-Zaytoonah University of JordanAmman11733Jordan

Many routing protocols,such as distance vector and link-state protocols are used for nding the best paths in a *** nd the path between the source and destination nodes where every node is visited once with no repeats,Hamiltonian and Hypercube routing protocols are often ***,these algorithms are not designed to solve the problem of a node failure,where one or more nodes become *** paper proposes an efcient modied Fault-free Hamiltonian Cycle based on the Hypercube Topology(FHCHT)to perform a connection between nodes when one or more nodes become *** can be applied in a different environment to transmit data with a high-reliability connection by nding an alternative path between the source and destination nodes when some nodes ***,a proposed Hamiltonian Near Cycle(HNC)scheme has been developed and *** implementation results indicated that FHCHT produces alternative cycles relatively similar to a Hamiltonian Cycle for the Hypercube,complete,and random *** implementation of the proposed algorithm in a Hypercube achieved a 31%and 76%reduction in cost compared to the complete and random graphs,respectively.

关键词： Hamiltonian cycle hypercube fault tolerance routing protocols WSN IoT

Site specific probabilistic seismic hazard analysis at Dubai Creek on the west coast of UAE

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Earthquake Engineering and Engineering Vibration 2011年第1期10卷 143-152页

作者： ayman A. Shama Parsons Corporation 100 Broadway New York NY 10005 USA

A probabilistic seismic hazard analysis （PSHA） was conducted to establish the hazard spectra for a site located at Dubai Creek on the west coast of the United Arab Emirates （UAE）. The PSHA considered all the seismogenic sources that affect the site, including plate boundaries such as the Makran subduction zone, the Zagros fold-thrust region and the transition fault system between them; and local crustal faults in UAE. PSHA indicated that local faults dominate the hazard. The peak ground acceleration （PGA） for the 475-year return period spectrum is 0.17 g and 0.33 g for the 2,475-year return period spectrum. The hazard spectra are then employed to establish rock ground motions using the spectral matching technique.

关键词： seismic hazard PSHA subduction zone rock ground motion spectral matching logic tree fault

Biosorption characteristics of unicellular green alga Chlorella sorokiniana immobilized in loofa sponge for removal of Cr(Ⅲ)

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Journal of Environmental Sciences 2008年第2期20卷 231-239页

作者： AKHTAR Nasreen iqbal Muhammad ZAFAR Saeed iqbal iqbal Javed Department of Biology Government lslamia College for WomenCooper RoadLahore-54550Pakistan. Environment Biotechnology Group Biotechnology and Food Research CentrePCSIR Laboratories ComplexLahore-54600Pakistan. School of Biological Sciences University of PunjabLahore-54570Pakistan.

Loofa sponge （LS） immobilized biomass of Chlorella sorokiniana （LSIBCS）, isolated from industrial wastewater, was investigated as a new biosorbent for the removal of Cr（Ⅲ） from aqueous solution. A comparison of the biosorption of Cr（Ⅲ） by LSIBCS and free biomass of C. sorokiniana （FBCS） from 10-300 mg Cr（Ⅲ）/L aqueous solutions showed an increase in uptake of 17.79% when the microalgal biomass was immobilized onto loofa sponge. Maximum biosorption capacity for LSIBCS and FBCS was found to be 69.26 and 58.80 mg Cr（Ⅲ）/g biosorbent, respectively, whereas the amount of Cr（Ⅲ） ions adsorbed onto naked LS was 4.97 mg/g. The kinetics of Cr（Ⅲ） biosorption was extremely rapid and equilibrium was established in about 15 and 20 min by LSIBCS and FBCS, respectively. The biosorption equilibrium was well defined by Langmuir adsorption isotherm model. The biosorption kinetics followed the pseudo-second order kinetic model. The biosorption was found to be pH dependent and the maximum sorption occurred at the solution pH 4.0. Desorption studies showed that 98% of the adsorbed Cr（Ⅲ） could be desorbed with 0.1 mol/L HNO3, while other desorbing agents were less effective in the order： EDTA 〉 H2SO4 〉 CH3COOH 〉 HCl. The regenerated LSIBCS retained 92.68% of the initial Cr（Ⅲ） binding capacity up to five cycles of reuse in continuous flow-fixed bed columns. The study revealed that LSIBCS could be used as an effective biosorbent for the removal of Cr（Ⅲ） from wastewater.

关键词： biosorption immobilization loofa sponge Chlorella sorokiniana Cr(Ⅲ) desorption fixed bed column reactor

Sedimentation retention basin utilization for best management practice

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Journal of Environmental Sciences 2003年第5期15卷 662-668页

作者： Zaheer iqbal CollegeofWaterResourcesandEnvironment

Approaches to the artificial impoundment and theoretical design of sedimentation retention basin are reviewed with particular attention to best management practice(BMP) to control agriculture and surface runoff. Sediments retention basins are the small version of farm pond used where a criteria of farm pond is not met. Such basin traps the pollutants and suspended solids prior to entry into streams and lakes. The study is focused with special reference to the assessment and control of non point source pollution(NPSP) from the sub basin area of Tai Lake in the Xishan County of Wuxi City of China. The author suggested two different approaches to conduct this study including theoretical design for sedimentation retention basin and computation of flow, sediment transport and deposition during the artificial impoundment of retention basin for BMP's utilization. Theoretical design will provide a useful function as a first line defense against the movement of sediments and transport of pollutants into the Tai Lake while the assessment of sediments deposition will help to make its proper use and periodic cleanup.

关键词： agriculture runoff artificial impoundment best management practice sediment retention basin Tai Lake sub basin non point source pollution

ELECTRICAL AND OPTICAL CHARACTERIZATION OF PMMA DOPED WITH Y_(0.0025)Si_(0.025)Ba_(0.9725)(Ti_((0.9))Sn_(0.1))O_3 CERAMIC

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Chinese Journal of Polymer Science 2010年第4期28卷 537-546页

作者： ayman S.Ayesh Department of Physics College of ScienceKing Faisal UniversityAl-AhssaSaudi Arabia

Poly（methylmetacrylate）（PMMA）/ Y0.0025Si0.025Ba0.9725 （Ti（0.9）Sn0.1）O3 （YBTS） composites were prepared at different weight ratios of YBTS （0 wt%, 5 wt%, 10 wt% and 20 wt% YBTS） in order to investigate effect of YBTS additions on the electrical and optical properties of PMMA host. The electrical properties （impedance, dielectric constant dielectric loss and AC conductivity） were studied in the frequency range 10 kHz-1 MHz and in temperature range 20-90℃. Upon increasing the contents of YBTS ceramic, we observed a reduction in the impedance and an increase in the dielectric constant, dielectric loss and AC conductivity of PMMA host. We also found that the relaxation process at high YBTS contents was due to relaxation in the ionic conductivity. The absorption coefficient （α） has been determined in the wavelength range 230-800 nm at room temperature for all YBTS-PMMA composites. Moreover, the addition of YBTS ceramic highly enhances the UV absorption of PMMA host especially below 300 nm. Addition of 20 wt% YBTS ceramic to PMMA host decreases the optical energy gap from 5 eV to 3.41 eV. Correlations between electrical, optical and SEM results are reported.

关键词： Electrical Optical PMMA, Ceramic Ferroelectric Composites

Influence of enhancing dynamic scapular recognition on shoulder disability,and pain in diabetics with frozen shoulder:A case report

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World Journal of Clinical Cases 2022年第33期10卷 12410-12415页

作者： ayman A Mohamed Basic Sciences Department Faculty of Physical TherapyBeni-Suef UniversityBeni Suef 34522Egypt Basic Sciences Department Faculty of Physical TherapyNahda UniversityBeni Suef 23146Egypt

BACKGROUND Frozen shoulder(FS)is a familiar *** with FS have more severe symptoms and a worse ***,this study investigated the influence of enhancing dynamic scapular recognition on shoulder disability and pain in diabetics with *** SUMMARY A Forty-five years-old male person with diabetes mellitus and a unilateral FS(stage II)for at least 3 mo with shoulder pain and limitation in both passive and active ranges of motion(ROMs)of the glenohumeral joint of≥25%in 2 directions participated in this *** person received dynamic scapular recognition exercise was applied to a diabetic person with a unilateral FS(stage II).The main outcome measures were upward rotation of the scapula,shoulder pain and disability index,and shoulder range of motion of flexion,abduction,and external *** dynamic scapular exercise was performed for 15 min/session and 3 sessions/wk lasted for 4 *** 4 wk of intervention,there were improvements between pre-treatment and post-treatment in shoulder pain,shoulder pain and disability index,shoulder ROM,and upward rotation of the *** This case report suggested that enhancing dynamic scapular recognition may improve shoulder pain and disability;upward rotation of the scapula;and shoulder ROM of shoulder abduction,flexion,and external rotation after 4 wk.

关键词： Scapular recognition Pain Range of motion Disability Frozen shoulder Case report

Challenge-Response Emotion Authentication Algorithm Using Modified Horizontal Deep Learning

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Intelligent Automation & Soft Computing 2023年第3期35卷 3659-3675页

作者： Mohamed Ezz ayman Mohamed Mostafa ayman Elshenawy College of Computer and Information Sciences Jouf UniversitySakaka72314Saudi Arabia Systems and Computers Engineering DEPT Faculty of EngineeringAl-Azhar UniversityCairo11651Egypt Software Engineering&Information Technology Faculty of Engineering&TechnologyEgyptian Chinese UniversityEgypt

Face authentication is an important biometric authentication method commonly used in security *** is vulnerable to different types of attacks that use authorized users’facial images and videos captured from social media to perform spooﬁng attacks and dynamic movements for penetrating secur-ity *** paper presents an innovative challenge-response emotions authentication model based on the horizontal ensemble *** proposed model provides high accurate face authentication process by challenging the authorized user using a random sequence of emotions to provide a speciﬁc response for every authentication trial with a different sequence of *** proposed model is applied to the KDEF dataset using 10-fold *** improvements are made to the proposed ***,the VGG16 model is applied to the seven common ***,the system usability is enhanced by analyzing and selecting only the four common and easy-to-use ***,the horizontal ensemble technique is applied to enhance the emotion recognition accuracy and minimize the error during authen-tication ***,the Horizontal Ensemble Best N-Losses(HEBNL)is applied using challenge-response emotion to improve the authentication efﬁ-ciency and minimize the computational *** successive improvements implemented on the proposed model led to an improvement in the accuracy from 92.1%to 99.27%.

关键词： Face authentication challenge-response authentication transfer learning and horizontal ensemble technique

Dimeric quinacridone cyclophanes: Synthesis,structures,and photophysical properties

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Science China Chemistry 2011年第2期54卷 314-319页

作者： JAVAD iqbal State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University

Two novel quinacridone (QA) cyclophanes with intrinsic intramolecular dye-dye interactions have been designed and synthesized.X-ray crystal structures as well as detailed photophysical properties have been well *** two dyes have a major advantage that efficient fluorescence quenching can be observed even in their dilute solutions.A comparison of photophysical properties between the dimeric QA cyclophane and its reference monomeric counterpart indicates that the dimerization is predominant for the fluorescence quenching of QA dyes in *** study provided some model QA derivatives with dimeric structures for understanding the fluorescence quenching of QA dyes in solutions.

关键词： quinacridone cyclophanes dye-dye interactions photophysics fluorescence quenching