检索结果-南通市图书馆

An Econometric Time Series GDP Model Analysis: Statistical Evidences and Investigations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Applied Mathematics and Physics 2018年第12期6卷 2635-2649页

作者： habib ahmed elsayir Department of Mathematics Al Qunfudha University College Umm Al Qura University Al Qunfudha Saudi Arabia

This article aims to provide an analysis for a time series data of gross domestic product (GDP) of the Sudan. An econometric time series model with macroeconomic variables is conducted. Since a non-stationary time series must be made stationary, some statistical tests are followed so that the time series become stationary series. After applying these tests, the time series became stationary and integrated of order I. Box-Jenkins procedure is used to determine ARMA. OLS is used to estimate the models parameters. Performances chosen ARIMA model are verified on the basis of classical statistical tests and forecasting. The model features are interpreted on the basis of standard measures of forecasting performance.

关键词： ARIMA Model GDP Box-Jenkins Models Stationary Time Series

Does dutasteride reduce the bleeding in transurethral resection of the prostate in patients on antiplatelet drugs?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Urology 2024年第3期18卷 194-198页

作者： ahmed M.Rammah Alaa Meshref Ebram Soliman Islam Nasser Abd Elaziz Enmar habib ahmed Yehia Abdelaziz ahmed H.Abozamel Department of Urology Kasr Alainy HospitalFaculty of MedicineCairo UniversityCairoEgypt El Sahel Teaching Hospital CairoEgypt

Background The aim of this study was to assess the effect of a 4-week dutasteride treatment on reducing the intraoperative and postoperative bleeding,as well as the amount and duration of irrigation required to clear the urine after transurethral resection of the prostate(TURP)≥50 g in men receiving the antiplatelet drug(APD).Materials and methods This double-blind randomized clinical trial included patients with a prostate size≥50 g who were indicated for TURP and were already receiving *** study was conducted in the Urology Department of Cairo University over a 12-month *** preoperative laboratory investigations were performed in all ***,baseline prostate size,serum prostate-specific antigen level,and International Prostate Symptom Score were *** patients were randomly divided into 2 equal groups(groups A and B).Group A,the dutasteride group,received dutasteride(0.5 mg)once daily for 4 *** B,the placebo group,received a placebo capsule once daily for 4 *** groups underwent bipolar *** patients were excluded from the study;9 patients from group A and 6 patients from group B,either due to drug intolerability or loss *** The mean blood loss was insignificant between the 2 groups immediately after and 24 hours after surgery(Δhemoglobin:1.41±0.63 g/dL vs.1.48±0.54 g/dL,2.12±0.70 g/dL vs.2.31±0.78 g/dL,respectively,p=0.631,p=0.333;Δhematocrit:2.97%±1.51%vs.3.16%±1.36%,4.96%±1.87%vs.5.73%±4.39%,respectively,p=0.610,p=0.380).However,there were significant differences in duration of indwelling urethral catheter(5.10±0.55 days vs.5.80±1.79 days,p=0.048),duration of bladder irrigation(13.60±2.85 hours vs.16.33±6.62 hours,p=0.044),and the amount of saline used for bladder irrigation(11.03±2.30 L vs.13.87±6.13 L,p=0.046)between group A and group *** Treatment with dutasteride for 4 weeks before TURP in men receiving APD did not significantly reduce intraoperative or postoperativ

关键词： Dutasteride Transurethral resection of the prostate Postprostatectomy bleeding Antiplatelet drugs

Salivary C-reactive protein and mean platelet volume as possible diagnostic markers for late-onset neonatal pneumonia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Pediatrics 2024年第1期13卷 41-51页

作者： Wafaa ahmed Metwali Abdelrahman Mohamed Elmashad Sahar Mohey Eldin Hazzaa Mohammed Al-Beltagi Mohamed Basiony Hamza Department of Pediatric Faculty of MedicineTanta UniversityTanta 31511AlgahrbiaEgypt Department of Clinical Pathology Faculty of MedicineTanta UniversityTanta 31511AlgahrbiaEgypt Department of Pediatric University Medical CenterDr.Suliaman Al Habib Medical GroupManama 26671ManamaBahrain Department of Pediatric University Medical CenterKing Abdulla Medical CityArabian Gulf UniversityManama 26671ManamaBahrain

BACKGROUND Neonatal sepsis,a formidable threat to newborns,is a leading cause of neonatal mortality,with late-onset sepsis manifesting after 72 hours post-birth being particularly ***,a prevalent sepsis presentation,poses a significant risk,especially during the neonatal phase when lung defenses are *** diagnosis of pneumonia is imperative for timely and effective ***,a minimally invasive diagnostic medium,holds great promise for evaluating infections,especially in *** To investigate the potential of serum C-reactive protein(CRP),salivary CRP(sCRP),and mean platelet volume(MPV)as diagnostic markers for late-onset neonatal pneumonia(LONP).METHODS Eighty full-term neonates were systematically examined,considering anthropometric measurements,clinical manifestations,radiology findings,and essential biomarkers,including serum CRP,sCRP,and *** The study reveals noteworthy distinctions in serum CRP levels,MPV,and the serum CRP/MPV ratio between neonates with LONP and healthy *** exhibited a robust discriminatory ability[area under the curve(AUC)=0.87]with high sensitivity and specificity at a cutoff value of>*** between serum CRP,sCRP,and MPV were also ***,sCRP demonstrated excellent predictive value for serum CRP levels(AUC=0.89),underscoring its potential as a diagnostic *** This study underscores the diagnostic promise of salivary and serum biomarkers,specifically MPV and CRP,in identifying and predicting LONP among *** findings advocate for further research to validate their clinical utility in larger neonatal cohorts.

关键词： Neonatal sepsis Late-onset pneumonia Salivary C-reactive protein Mean platelet volume Diagnostic markers Newborn infections

Energy Management of a Battery Storage and D-STATCOM Integrated Power System Using the Fractional Order Sliding Mode Control

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2021年第5期7卷 996-1010页

作者： Toqeer ahmed Asad Waqar Essam A.Al-Ammar Wonsuk Ko Yongki Kim Muhammad Aamir habib Ur Rahman habib Department of Electrical Engineering Bahria University44000 Islamabad.Pakistan Department of Electrical Engineering College of Engineering.King Saud UniversityRiyadh 11421.Saudi Arabia. Green Building Research Center.Korea Institute of Civil Engineering and Building Technology.Goyang Gyeonggi-doSouth Korea. Pak-Austria Fachhochschule Institute of Applied Sciences and Technology HaripurPakistan Huazhong University of Science and Technology WuhanChina.

At present,the power system is more inclined towards disturbances,such as voltage variations and unbalanced load conditions,due to the grid's complexity and load *** challenges emphasize the integration of the compensating devices,such as battery storage(BS)and *** this regard,this current paper exhibits a novel energy management system(EMS)of a combined BS and D-STATCOM to compensate the power system during *** EMS is based on a fractional order sliding mode control(FOSMC)to drive the voltage source converters(VSCs)such that the active power is independently absorbed/injected by the BS,whereas the reactive power is independently absorbed/injected by the D-STATCOM depending upon the disturbance *** is a robust non-linear controller in which the Riemann-Liouville(RL)function is employed to design the sliding surface and the exponential reaching law is used to minimize the chattering *** stability of the FOSMC in the proposed EMS is proved using the Lyapunov candidate *** order to validate the performance of the proposed EMS,a model of a 400 V,180 kVA radial distributor along with a BS and D-STATCOM is simulated in MATLAB/Simulink environment in two test *** results prove that the proposed EMS with FOMSC effectively compensates the power system under voltage variations and unbalanced load conditions with rapid tracking,fast convergence and upright ***,the results have been compared with the classical proportional integral(PI)control and fixed frequency SMC(FFSMC),and they demonstrate the superiority of the proposed EMS with FOSMC in power system applications.

关键词： Battery storage D-STATCOM energy management system fractional order sliding mode control

Synthesis and evaluation of some novel additives as antioxidants and corrosion inhibitors for petroleum fractions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Science 2014年第1期11卷 161-173页

作者： ahmed El-Mekabaty Osman M. O. habib Department of Chemistry Faculty of Science Mansoura University

Benzoxazinone 2 was prepared and reacted with formamide,acetamide,some primary aromatic amines and heterocyclic amines giving the corresponding quinazolone derivatives 3-15 *** reaction of benzoxazinone 2 with hydrazine hydrate and phenyl hydrazine was also *** compounds of the synthesized products were evaluated as antioxidants and corrosion inhibitors for gasoline engine lubricating *** highest antioxidant activities were obtained with compounds *** optimum concentration recommended for these new additives was found to be *** for 1L ofoil for compounds *** addition,some of the highly effective antioxidant additives,namely 10-15,were thermally analyzed by using thermogravimetric analysis （TGA） and differential thermal gravimetric analysis （DTGA） techniques and the results indicated that compounds are thermally stable and could be used under thermal ***,a comparison of the oxidation stability between the tested oil containing the prepared products and lubricating oil containing commercial additives was also studied.

关键词： Benzoxazinone quinazolinone thermal stability antioxidant additives anticorrosive additives

Metals and metalloid bioconcentrations in the tissues of Typha latifolia grown in the four interconnected ponds of a domestic landfill site

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2017年第4期29卷 56-68页

作者： Zohra Ben Salem Xavier Laffray ahmed Al-Ashoor habib Ayadi Lotfi Aleya Bourgogne Franche-Comte University Chrono-Environnement Laboratory UMR CNRS 6249 F-25030 Besancon Cedex France Paris Est-Creteil University IPE team iEES Paris UMR 7618 F-94010 Creteil Cedex Prance Thi Qar University IQ-64001 AI Nasiriyah Iraq Sfax University LR/UR/05ES05 Biodiversity and Aquatic Ecosystem BP 1171 CP 3000 Sfax Tunisia

The uptake of metals in roots and their transfer to rhizomes and above-ground plant parts（stems, leaves） of cattails（Typha latifolia L.） were studied in leachates from a domestic landfill site（Etueffont, France） and treated in a natural lagooning system. Plant parts and corresponding water and sediment samples were taken at the inflow and outflow points of the four ponds at the beginning and at the end of the growing season. Concentrations of As, Cd, Cr, Cu, Fe, Mn, Ni and Zn in the different compartments were estimated and their removal efficiency assessed, reaching more than 90% for Fe, Mn and Ni in spring and fall as well in the water compartment. The above-and below-ground cattail biomass varied from 0.21 to 0.85, and 0.34 to 1.24 kg dry weight/m^2, respectively, the highest values being recorded in the fourth pond in spring 2011. The root system was the first site of accumulation before the rhizome, stem and leaves. The highest metal concentration was observed in roots from cattails growing at the inflow of the system＇s first pond. The trend in the average trace element concentrations in the cattail plant organs can generally be expressed as： Fe 〉 Mn 〉 As 〉 Zn 〉 Cr 〉 Cu 〉 Ni 〉 Cd for both spring and fall. While T. latifolia removes trace elements efficiently from landfill leachates, attention should also be paid to the negative effects of these elements on plant growth.

关键词： Landfill leachate Lagooning Trace elements Typha latifolia Phytoremediation

Intestinal carriage of methicillin resistant Staphylococcus aureus and extended-spectrum β-Lactamase-producing Enterobacteriacae in hospitalized and nonhospitalized patients and their clinical implications

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2009年第3期2卷 41-45页

作者： Hanan ahmed habib Babay Ali Mohammed Somily Department of Pathology Microbiology Unit King Khalid University HospitalRiyadhSaudi Arabia

Objective:To determine the clinical implication of and intestinal carriage with methicillin resistant Staphylococcus aureus(MRSA) and extended spectrumβ-lactamase(ESBL)-producing ***: A total of 180 stool specimens were screened for MRSA and ESBL-producing *** of ESBL- producing Enterobacteriacae was done by MicroScan Walk Away 96 system(Dade Behring Inc.,West Sacramento,CA 95691,USA ) and confirmation by double-disc synergy *** was identified by disc diffusion using 30μg cefoxitin disc and the ***:The rate of fecal MRSA carriage was 7.8% (14/180),35.7%(5 /14) were recovered from surgical *** patients(21,4%) had MRSA recovered from other body sites,and 2(14.2%) had in addition ESBL -producing Escherichia coli(***) and Klebsiella pneumoniae(***) ***(28.5%) patients with MRSA fical carriage died. MRSA fecal carriage was recovered from both inpatients and ***(2.2%) cases carried ESBL-producing Enterobacteriacae in ***(75%) were from intensive care unit(ICU).One patient had both ESBL-producing *** and *** from stool as well as *** from tracheal *** ICU patients with fecal ESBL ***:Fecal screening for MRSA and ESBL of all patients at high risk admitted to different hospital wards and ICUs and implementing infection control measures were recommended.

关键词： Intestinal carriage Methicillin resistant Staphylococcus aureus Extended spectrumβ-lactamase Enterobacteriacae

X-ray Image-Based COVID-19 Patient Detection Using Machine Learning-Based Techniques

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2022年第11期43卷 671-682页

作者： Shabana habib Saleh Alyahya Aizaz ahmed Muhammad Islam Sheroz Khan Ishrat Khan Muhammad Kamil Department of Information Technology College of ComputerQassim UniversityBuraidah52571Saudi Arabia Department of Electrical Engineering College of Engineering&Information TechnologyOnaizah CollegesOnaizah51911Saudi Arabia Digital Image Processing Lab Islamia CollegePeshawar25120KPKPakistan Department of Computer Science College of Computer and Information SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia Department of Electrical Engineering National University of Computer and Emerging SciencesPeshawarPakistan

In early December 2019,the city of Wuhan,China,reported an outbreak of coronavirus disease(COVID-19),caused by a novel severe acute respiratory syndrome coronavirus-2(SARS-CoV-2).On January 30,2020,the World Health Organization(WHO)declared the outbreak a global pandemic *** the face of the COVID-19 pandemic,the most important step has been the effective diagnosis and monitoring of infected *** COVID-19 using Machine Learning(ML)technologies can help the health care unit through assistive diagnostic suggestions,which can reduce the health unit's burden to a certain *** paper investigates the possibilities of ML techniques in identifying/detecting COVID-19 patients including both conventional and exploring from chest X-ray images the effect of viral *** approach includes preprocessing,feature extraction,and ***,the features are extracted using the Histogram of Oriented(HOG)and Local Binary Pattern(LBP)feature ***,for the extracted features classification,six ML models of Support Vector Machine(SVM)and K-Nearest Neighbor(KNN)is *** results show that the diagnostic accuracy of random forest classifier(RFC)on extracted HOG plusLBP features is as high as 94%followed by SVM at 93%.The sensitivity of the K-nearest neighbour model has reached an accuracy of 88%.Overall,the predicted approach has shown higher classification accuracy and effective diagnostic *** is a highly useful tool for clinical practitioners and radiologists to help them in diagnosing and tracking the cases of COVID-19.

关键词： Image pre-processing detection classification x-ray images filter

Are serum leptin levels predicted by lipoproteins, vitamin D and body composition?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2019年第4期10卷 260-268页

作者： Aysha habib Khan Syeda Sadia Fatima ahmed Raheem Lena Jafri Departments of Pathology and Laboratory Medicine and Medicine Aga Khan University Department of Basic Biomedical Sciences Aga Khan University Department of Pathology and Laboratory Medicine Aga Khan University

BACKGROUND Both obesity and vitamin D deficiency are important health issues in *** connection between body composition, Vitamin D and leptin in young adults is important to be studied as body composition may affect bone health and therefore the possibility of osteoporosis in later life. Few studies have attempted to investigate the effect of body composition and leptin with vitamin D in *** To investigate the association of serum leptin with body composition, lipids and25-hydroxyvitamin D(25 OHD) in *** This cross-sectional study was conducted on 167 apparently healthy *** were recorded, bioelectrical impedance analysis was performed and clinical history noted. Serum leptin was measured using DIA source kit on ELISA and total 25 OHD was measured on ADVIA-Centaur; Siemens. Total cholesterol and high density lipoprotein cholesterol were quantified using Enzymatic Endpoint Method and Cholesterol Oxidase-Phenol Aminophenazone method respectively. Biochemical analysis was done in the Departments of Pathology and Laboratory Medicine and Biological and Biomedical Sciences, Aga Khan University Hospital Karachi *** Median age of the group(n = 167) was 20 years(IQR 27-20); 55.7% were ***(89.2%, n = 149) of the study group was 25 OHD deficient, 6%(n = 10)had insufficient serum 25 OHD levels and 4.8%(n = 8) had sufficient D ***, had higher median leptin levels [2.71(IQR 4.76-1.66 ng/mL)] compared to their counterparts [1.3(3.60-0.54 ng/mL), P < 0.01]. Multiple regression analysis suggested that basal metabolic rate, muscle mass, body fat percent, bone mass and serum 25 OHD were the most contributing factors to serum leptin levels. Bone mass and serum 25 OHD in fact bore a negative correlation with *** The results indicate that basal metabolic rate, muscle mass, body fat percent, bone mass and serum 25 OHD have an impact on serum leptin. Being a cross sectional study causal relati

关键词： Leptin Vitamin D Obesity Vitamin D deficiency Body fat