检索结果-南通市图书馆

Performance Assessment of Coded-Beam High Throughput Satellites

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

International Journal of Communications, Network and System Sciences 2017年第8期10卷 218-226页

作者： eman S. Abass Joseph V. m. Halim Hadia m. El-Hennawy Electronics and Communication Department MTI University Cairo Egypt Electronics and Communication Department Ain Shams University Cairo Egypt

High-throughput satellite (HTS) systems usually make use of multibeam coverage at high frequency bands in order to offer broadband access of large areas. multibeam coverage increases the available capacity through frequency reuse and spatial separation. However, one of its major drawbacks is inter- spot interference which considered the motivation to propose a new approach using a coding technique to distinguish between beams that will be employed to mitigate this interference without the need of frequency reuse. This approach makes the use of orthogonal codes to identify beams and allow using the total satellite bandwidth per beam. Proposed system double the bandwidth used in each beam and save the usage of antenna polarization resource used in former designs, which may be used as a multiple accessing resource inside the coded beams. The objective of this paper is to provide a comprehensive performance assessment methodology for the proposed approach. Result validation is introduced by comparing the proposed system performance with conventional systems that relay on the DVB standards.

关键词： High-Throughput Satellites multibeam Satellites Coded Beams Walsh Coding CDmA Satellites

The Association between mycoplasma Species Infection and Tubal Obstruction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2018年第13期8卷 1431-1437页

作者： Hala Gomaa eman Shaeer Samuel Soliman New Life Fertility Center Mississauga Canada Obstetrics and Gynaecology Department Faculty of Medicine Cairo University Cairo Egypt

Objectives: Numerous factors can cause infertility. Tubal factor accounts for approximately 30% of infertility in females. This study was conducted to evaluate the rate of asymptomatic mycoplasma hominis and Ureaplasma urealyticum infection in females diagnosed with tubal obstruction. methods: This is a retrospective case-control study conducted at New Life Fertility Centre. We have identified and reviewed the health records of 167 subfertile women that had HSG and an endocervical swab for mycoplasma hominis and Ureaplasma urealyticum done. Results: We compared the endocervical swab results of ureaplasma and mycoplasma in the patients with tubal obstruction (group 1) to the patients with normal patent tubes (group 2). Diagnosis of tubal patency was based on the HSG results. Our results show that there is a significantly higher rate of Ureaplasma urealyticum/mycoplasma hominis infection in group 1 compared to group 2. Conclusion: Our data shows that there is a high rate of U. urealyticum and m. hominis infection in patients diagnosed with tubal factor of infertility and it can be a marker in the prediction of the tubal pathology.

关键词： Infertility Tubal Factor Hysterosalpingogram Ureaplasma urealyticum mycoplasma hominis

Erratum to “Linezolid versus Vancomycin for the Treatment of methicillin-Resistant <i>Staphylococcus aureus</i>in Hospital-Acquired, Entilator-Associated, and Healthcare-Associated Pneumonia at Tertiary Care Hospital”, [Advances in Infectious Diseases 7 (2017) 11-18]

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Infectious Diseases 2020年第3期10卷 161-162页

作者： eman mohammad Hamdan majda AL-Attas Yanbu General Hospital Ministry of Health Yanbu Saudi Arabia King Faisal Specialist Hospital and Research Centre Jeddah Saudi Arabia

The original online version of this article (Hamdan, E.m. and AL-Attas, m. (2017) Linezolid versus Vancomycin for the Treatment of methicillin-Resistant Staphylococcus aureus in Hospital-Acquired, Ventilator-Associate... 详细信息

The original online version of this article (Hamdan, E.m. and AL-Attas, m. (2017) Linezolid versus Vancomycin for the Treatment of methicillin-Resistant m>Staphylococcus aureusm> in Hospital-Acquired, Ventilator-Associated, and Healthcare-Associated Pneumonia at Tertiary Care Hospital. Advances in Infectious Disease, 7, 11-18. https://***/10.4236/aid.2017.71002) unfortunately contains some mistake. The author wishes to correct the errors in Abstract.

关键词： Erratum

The potency of N,N′-diphenyl-1,4-phenylenediamine and adiposederived stem cell co-administration in alleviating hepatorenal dysfunction complications associated with type 1 diabetes mellitus in rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

BIOCELL 2023年第8期47卷 1885-1895页

作者： HANY m.ABD EL-LATEEF SAFA H.QAHL eman FAYAD SARAH A.ALTALHI IBRAHIm JAFRI EL SHAImAA SHABANA mARWA K.DARWISH REHAB mAHER SAAD SHAABAN SHADY G.EL-SAWAH Department of Chemistry College of ScienceKing Faisal UniversityAl-AhsaSaudi Arabia Chemistry Department Faculty of ScienceSohag UniversitySohagEgypt Department of Biology College of ScienceUniversity of JeddahJeddahSaudi Arabia Department of Biotechnology College of ScienceTaif UniversityTaifSaudi Arabia Fellow of Biochemistry Genetic UnitChildren HospitalFaculty of MedicineMansoura UniversityMansouraEgypt Chemistry Department(Biochemistry Branch) Faculty of ScienceSuez UniversitySuezEgypt Department of Clinical Laboratories Sciences College of Applied Medical SciencesShaqra UniversityRiyadhSaudi Arabia Biology Department Faculty of ScienceMansoura UniversityMansouraEgypt Department of Chemistry Organic Chemistry DivisionCollege of ScienceMansoura UniversityMansouraEgypt Zoology Department Faculty of ScienceArish UniversityNorth SinaiEgypt

Background:The increasing occurrence of diabetes mellitus(Dm)noted worldwide has considerably elicited concern in the recent *** is associated with elevated vascular complications,morbidity,mortality,and poor quality of *** this context,mesenchymal stem cells(mSCs)have shown significant therapeutic potentialities in managing and curing type 1 Dm owing to their self-renewable,immunosuppressive,and differentiation *** investigated the potential action of N,N′-diphenyl-1,4-phenylenediamine(DPPD),a well-known synthetic antioxidant to enhance the therapeutic ability of the adipose-derived stem cells(AD-mSCs)in alleviating kidney and liver complications in diabetic ***:Over the four weeks of experiments,albino male rats(n=36)were split into six test groups:control,DPPD(250 mg/kg,i.p.),STZ-diabetic(D),D+DPPD,D+AD-mSCs(1×10^(6)cell/rat,i.v.),and D+AD-mSCs+DPPD treated ***:Significant declines in the renal and hepatic oxidative stress markers(mDA,ROS,and AGEs)were observed coupled with a significant elevation in many antioxidant marker levels(GSH,SOD,CAT,GPx,HO-1,and TAC)in the diabetic rats treated with either DPPD or AD-mSCs or their co-administered injection compared to the diabetic untreated *** was suggested to be the leading cause of amelioration of the kidney functions(as measured by urea,uric acid,and creatine levels)and liver functions(as evidenced by the levels of AST,ALT,ALP,bilirubin,total proteins,albumin,and globulins).Conclusion:DPPD and AD-mSCs co-administration showed superior results in terms of the enhancement of the relative hepato-renal function,indicating the beneficial role of DPPD supplementation in increasing the therapeutic potential of AD-mSCs.

关键词： Antioxidants Diabetic nephropathy DPPD Oxidative stress Stem cells

Annexin A2 as a biomarker for hepatocellular carcinoma in Egyptian patients

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 Hepatology 2017年第9期9卷 469-476页

作者： mohamed K Shaker Hanzada I Abdel Fattah Ghada S Sabbour Iman F montasser Sara m Abdelhakam eman El Hadidy Rehab Yousry Ahmed K El Dorry Department of Tropical medicine Faculty of MedicineAin Shams University Department of Clinical Pathology Faculty of MedicineAin Shams University Department of Radiodiagnosis and Inter-ventional Radiology Faculty of MedicineAin Shams University

AIm To investigate the clinical utility of serum annexin A2(ANXA2) as a diagnostic marker for early hepatocellular carcinoma(HCC).mETHODS This study was performed in HCC Clinic of Ain Shams University Hospitals, Cairo, Egypt and included: Group 1: Fifty patients with early stage HCC(Barcelona Clinic Liver Cancer stage A); Group 2: Twenty five patients with chronic liver disease; and Control Group: Fifteen healthy, age-and sex-matched subjects who were seronegative for viral hepatitis markers. The followinglaboratory investigations were done: Viral hepatitis markers [hepatitis B surface antigen and hepatitis C virus(HCV) antibodies], HCV RNA in HCV antibody-positive patients, serum alpha fetoprotein(AFP), and serum ANXA2 *** In this study, 88% of HCC patients(n = 44) were HCVpositive, while HBV infection represented only 8% of all HCC patients(n = 4); and two patients were negative for both viral markers. A highly significant difference was found between patients with HCC and chronic liver disease as well as controls with regard to serum ANXA2 levels(130, IQR 15-240; 15, IQR 15-17; and 17, IQR 15-30 ng/m L, respectively). The area under the curve of ANXA2 was 0.865; the cut-off value was established to be 18 ng/mL with a diagnostic sensitivity of 74% and a specificity of 88%, while the sensitivity and specificity of AFP at the cut-off value of 200 ng/dL were 20% and 100%, *** Serum ANXA2 may serve as a biomarker for the early detection of HCC.

关键词： Hepatocellular carcinoma Hepatitis C virus Annexin A2 Alpha-fetoprotein Tumor markers

Prevalence of Depression in Elderly People Living With HIV:A Systematic Review and meta-analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious microbes & Diseases 2023年第4期5卷 167-171页

作者： Gasmelseed Y.Ahmed Chandni Saha eman m.Almusalami Ali A.Rabaan Saad Alhumaid Abdelraheem A.Ali AbdAllah A.Basheer Yousra Babikir Ziyad Fahad Aljofan Abbas Al mutair Columbia University Hospital New YorkNew YorkUSA Research Center Almoosa Specialist HospitalAlhasaSaudi Arabia molecular Diagnostic Laboratory Johns Hopkins Aramco HealthcareAlhasaSaudi Arabia ministry of Health AlhasaSaudi Arabia Faculty of medicine and Health Sciences Managil University for Sciences and TechnologyAl ManagilSudan montclair University MontclairNew JerseyUSA College of medicine King Saud UniversityRiyadhSaudi Arabia School of Nursing University of WollongongWollongongNew South WalesAustralia medical Surgical Nursing Department Princess Nourah Bint Abdulrhamn UniversityRiyadhSaudi Arabia Nursing Department AlmoosaCollege of Health SciencesAl-MubarrazSaudi Arabia Nursing Department Prince Sultan Military CollegeDhahranSaudi Arabia

We conducted a systematic review andmeta-analysis to determine the prevalence of depression among elderly people living with *** searched electronic databases and included 12 observational studies that reported on depression among people who were 50 years of age or older and had *** studies were mostly hospital-based and fromWestern and African *** included a total of 5868 older peoplewith HIV,ofwhom 1667 had *** prevalence of depression was 28%with heterogeneity of 95.2%.Prevalence ranged from 14.5%in the Netherlands to 42.4%in South *** therewas asymmetry in the funnel plot,the Egger’s test showed no significant publication *** meta-analysis found a high burden of depression among older people with *** health services addressing psychosocial needs and interventions to prevent and treat depression are needed,especially in community *** providers and policymakers should address the prevalence of depression in such communities.

关键词： AIDS aging with HIV depression psychosocial needs

Adult Sex Discrimination Using metric measurements of Hand Digital Radiographs in Egyptian Population

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forensic medicine and Anatomy Research 2022年第2期10卷 27-43页

作者： Ghadeer m. m. Abdelaal eman A. A. Abdallah Asmaa A. Alshamy Elham Elshawadfy megahed Forensic medicine and Clinical Toxicology Department Faculty of Medicine Zagazig University Zagazig Egypt Radiology Department Faculty of Medicine Zagazig University Zagazig Egypt

Objective: The aim of the present study is to discriminate functions for sex determination in a subjected sample of the Egyptian population using the morphology of metacarpals and phalanges for gender comparison. Furthermore, the measurements discussed in this study will aid in predicting the differentiation independently and guaranteeing sex determination in the subjected population individually. methods: Forty measurements were taken from the right metacarpals and phalangeal bones of 100 subjects, whose ages ranged from 19 to 60. moreover, the measurements of nine metacarpals and four phalangeal bones were used for sex discrimination in each sample population. Results: males had significantly greater mean values (P metacarpals and the proximal phalangeal bones of all right-hand fingers than females. The cut-off value and the accuracy percentage for precise sex classification of males and females using individual and grouped bones showed that a value higher than the marking point classified an individual as male and that a lower value suggested female. Besides, the multiple stepwise discriminant functional analysis of the most predictable internal variables of the metacarpals revealed a cross-validated sex classification accuracy of 100%. In contrast, the most predictable internal variables of the phalanges showed a cross-validated sex classification accuracy of 93%. Conclusion: The results revealed a new forensic suggestion for the determination of sex based on the measurements of the metacarpals and the phalanges. moreover, various discriminant equations were applied for the declaration of this conceivable recommendation.

关键词： Sex Discrimination metacarpals Phalanges Osteometric measurements

Structural and Surface morphology Analysis of Nickel Phthalocyanine Thin Films

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in materials Physics and Chemistry 2013年第1期3卷 113-119页

作者： mohammed T. Hussein eman m. Nasir Addnan H. Al-Aarajiy Department of Physics University of Baghdad Baghdad Iraq

The thin films of Nickel Phthalocyanine (NiPc) on glass substrates were prepared by vacuum evaporation at different substrates temperatures (300, 325, 350, 400, 450) K. The structure and surface morphology of NiPc in powder and thin film forms (265 nm) were studied using X-ray diffraction and atomic force microscope (AFm), and showed that there was a change and enhance in the crystallinity and surface morphology due to change in the substrates temperatures. Analysis of X-rays diffraction patterns of NiPc in powder form showed that it had an α-polycrystalline phase with monoclinic system with lattice constants a = 1.513 nm, b = 0.462 nm, c = 2.03 nm and β = 123.46°. Thermal evaporation of NiPc at different substrates temperatures led to β-crystalline films oriented preferentially to the (100) plane with different substrate temperatures. The mean crystallite size increased with substrates temperatures from 300 K to 450 K. This result was supported by AFm measurements, which exhibited a relatively larger grain size.

关键词： Nickel Phthalocyanine Organic XRD AFm morphology Thin Film Structure

Histochemical alterations in colorectal carcinoma and adenoma in Egyptian patients

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 Coastal Life medicine 2016年第1期4卷 14-20页

作者： Saber A Sakr moshira m Abdel-Wahed Asmaa G Abdou eman K El-Adely Zoolgy Department Faculty of ScienceMenoufia UniversityAl MinufyaEgypt Pathology Department Faculty of MedicineMenoufia UniversityAl MinufyaEgypt

Objective:To evaluate the histochemical alterations in DNA and total carbohydrates,in colorectal cancer ***:This study was carried out on 48 colorectal carcinoma and 10 adenoma *** and Eosin staining was carried out for histopathological examination to confirm the diagnosis and to evaluate the histopathological characteristics of *** grade and pathologic stage was assessed according to TNm staging *** was also assessed according to original Dukes’staging *** was demonstrated by Feulgen method and carbohydrates were demonstrated by periodic acid Schiff’s ***:Adenoma cases showed that the cells lining the glands of the polyp have more crowded,irregular and darker nuclei(hyperchromatic),anisonucleosis,abnormal mitotic figures with prominent nucleoli and variability in the size and shape of *** carcinoma cases showed a condensation and reduction in the size of a cell nucleus associated with hyperchromatosis,pyknotic nuclei,abnormal mitotic figures,anisonucleosis,irregular nuclear membrane and inequality in the size of the nuclei(Pleomorphosis).There was a statistical significant differences between adenoma and carcinoma regarding number of mitotic cells(P=0.03)that was in favour of malignant *** and colorectal carcinoma cases showed periodic acid Schiff’s reactivity with different ***:These histochemical alterations can be so characteristic of a given tumor type and stage that they are used in cancer diagnosis and might also be related to the altered functional properties of cancer cells.

关键词： Colon cancer Histochemistry DNA Carbohyderates