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Some Physical Properties of CuTlSe Alloy

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Journal of Materials Science & Technology 2001年第2期17卷 229-232页

作者： A.Abdel All Physics Department, Faculty of Science , Helwan University, Cairo, Egypt K.A.Sharaf Physics Department, Faculty of Science, Al-Azhar University for Girls, Cairo, Egypt a.elshafie Physics Department, Faculty of Science, Menoufia University, She Dept. of Phys. Faculty of Sci. Helwan Univ. Cairo Egypt

The structure and optical properties of Cu0.1Tl2Se3 alloy was studied. X-ray analysis showed that the polycrystalline powder consists of a mixture of two phases Cu3jTlSe2 (monoclinic) and TISe (tetragonal). Chalcopyrite phase CuTISe2 can be obtained by annealing the powder at 250'C for 1 h. Thin film with a monoclinic phase of Cu3TlSe2 was obtained for the thick film (0.7 um). The optical parameters a, n, k, e' and e' and the energy gap were calculated. The thermoelectric power measurements showed that S has a positive polarity over the whole range of temperature.

关键词： Cu Some Physical Properties of CuTlSe Alloy

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Injection of biosurfactant and chemical surfactant following hot water injection to enhance heavy oil recovery

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Petroleum Science 2016年第1期13卷 100-109页

作者： Yahya Al-Wahaibi Hamoud Al-Hadrami Saif Al-Bahry Abdulkadir elshafie Ali Al-Bemani Sanket Joshi Petroleum and Chemical Engineering Department Sultan Qaboos University Department of Biology College of ScienceSultan Qaboos University

This study investigates the potential of enhancing oil recovery from a Middle East heavy oil field via hot water injection followed by injection of a chemical surfactant and/or a biosurfactant produced by a Bacillus subtilis strain which was isolated from oil-contaminated *** results reveal that the biosurfactant and the chemical surfactant reduced the residual oil saturation after a hot water ***,it was found that the performance of the biosurfactant increased by mixing it with the chemical *** is expected that the structure of the biosurfactant used in this study was changed when mixed with the chemical surfactant as a probable synergetic effect of biosurfactant-chemical surfactants was observed on enhancing oil recovery,when used as a mixture,rather than *** work proved that it is more feasible to inject the biosurfactant as a blend with the chemical surfactant,at the tertiary recovery *** might be attributed to the fact that in the secondary mode,improvement of the macroscopic sweep efficiency is important,whereas in the tertiary recovery mode,the microscopic sweep efficiency matters mainly and it is improved by the biosurfactantchemical surfactant *** as evidenced by this study,the biosurfactant worked better than the chemical surfactant in reducing the residual heavy oil saturation after a hot water flood.

关键词： surfactant Injection attributed macroscopic saturation mixing microscopic contaminated tertiary enhancing

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Escherichia coli tetracycline efflux determinants in relation to tetracycline residues in chicken

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Asian Pacific Journal of Tropical Medicine 2013年第9期6卷 718-722页

作者： Al-Bahry SN Al-Mashani BM Al-Ansari AS elshafie AE Mahmoud IY Department of Biology College of ScienceSultan Qaboos University Department of Biological Sciences and Chemistry University of Nizwa

Objective:To screen for Escherichia coli(***)resistant to tetracycline,followed by identification of tet efflux genes by polymerase chain reaction(PCR).In addition,detection of tetracycline residues in chicken livers and kidneys were conducted using high performance liquid chromatography-tandem quadrupole mass spectrometry(HPLC-MS-MS).Methods:Strains of *** were isolated from samples of chicken colon and screened for tetracycline *** genes conferring resistance(Tc^r)were detected by polymerase chain reaction(PCR).Most of the isolates were resistant to tetracycline(97.9%).Results:PCR analysis indicated that Tc^r *** R-plasmids contained tet(A),tet(B)and a combination of both efflux *** of the isolates contained other efflux tet genes tet(C,D,E and Y).High performance liquid chromatography-tandem quadrupole mass spectrometry(HPLC-MS-MS),a sensitive technique,was used to detect residues of chlortetracycline(CTC),oxytetracyeline(OTC),doxveycline(DC)in chicken livers and *** samples containing tetracycline residues were at 0.13-0.65pg/μL ***:Tetracycline and other antibiotics are commonly used in the poultry and meat production industry for prevention of microbial *** antibiotic resistant bacteria in Oman have increased to alarming levels,threatening public health,domestic and may have adverse effect on environment.

关键词： Chicken Escherichia coli Antibiotic resistance genes Tetraeyeline

Impact of the socioeconomic status on the severity and outcome of community-acquired pneumonia among Egyptian children: a cohort study

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Infectious Diseases of Poverty 2014年第1期3卷 128-134页

作者： Seham Fathy Abdel Hameed Azab Laila M Sherief Safaa H Saleh Wafaa F Elsaeed Mona a.elshafie Sanaa M Abdelsalam Faculty of Medicine Zagazig UniversityEgypt18 Omar Bin Elkhattab StAl QawmiaZagazig CityAl Sharqia GovernorateEgypt

Background:Community-acquired pneumonia(CAP)is one of the five leading causes of death among children in developing countries,accounting for approximately three million deaths per *** of the modifiable risk factors of CAP may help to reduce the burden of this *** this study,the impact of the socioeconomic status(SES)on the severity and outcome of CAP among Egyptian children was ***:This was a prospective longitudinal cohort study which included 1,470 children diagnosed with CAP,aged two to 15 years(median age 5.4 years).The diagnosis of CAP was based on clinical and radiological findings.A structured questionnaire and the patients’medical records were used for the data *** subjects were divided into two groups:mild and severe *** and demographic variables were compared,and a multivariate logistic regression analysis was ***:The multivariate analysis showed that a low maternal education level(OR:3.8;95%CI:2.12-6.70;P=.0001),unavailability of adequate medical care(OR:3.1;95%CI:1.99-4.88;P=.0001),a low family income(OR:2.2;95%CI:0.99-4.78;P=.047),and parents’smoking habits(OR:2.0;95%CI:1.15-3.55;P=.014)were significant independent predictive risk factors for severe CAP among Egyptian ***:Public health measures against these socio-demographic risk factors should be identified as priorities in order to help reduce the disease burden of deaths from severe CAP among Egyptian children.

关键词： Socioeconomic Community acquired pneumonia Children

Significance of serum leptin and adiponectin levels in Egyptian patients with chronic hepatitis C virus associated hepatic steatosis and fibrosis

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World Journal of Hepatology 2013年第2期5卷 74-81页

作者： Tarek E Korah Sawsan El-Sayed Maathir K elshafie Ghada E Hammoda Manal A Safan Department of Internal Medicine Faculty of MedicineMenoufiya University32511 MenoufiyaEgypt Department of Tropical Medicine Faculty of MedicineMenoufiya University32511 MenoufiyaEgypt Department of Medical Biochemistry Faculty of MedicineMenoufiya University32511 MenoufiyaEgypt

AIM:To study serum levels of leptin and adiponectin in patients with chronic hepatitis C virus infection genotype-4(HCV-4) related steatosis and ***:We prospectively studied 45 untreated men with chronic HCV-4,with proven steatosis(group Ⅰ,30 patients),and fibrosis(group Ⅱ,15 patients),on liver *** addition,15 healthy men(group Ⅲ),matched for age,and body mass index were ***,we excluded another five patients with steatohepatitis,and six patients with *** measured total serum leptin and adiponectin levels,as potential predictors for liver steatosis and ***,a correlation between these adipokines and various clinical and laboratory data were *** subjects were selected from Tropical and Internal medicine departments,Menoufiya University Hospital,Menoufiya,Egypt,during the period from February 2010 to August ***:In group Ⅰ,severity of hepatic steatosis was mild,moderate,and severe,in 19 patients(63.5%),8 patients(26.5%),and 3 patients(10%),*** contrast,in group Ⅱ,hepatic fibrosis was found to be in stage 1,2,and 3,in 6 patients(40%),in 6 patients(40%),and in 3 patients(20%),*** comparing group Ⅰ with group Ⅱ,there was a significant decrease in serum adiponectin levels(131.4 ± 7.91 pg/mL vs 436 ± 9.75 pg/mL,P 0.05).However,in the same group,when compared with group Ⅲ,there was a significant increase in serum leptin levels(34.69 ± 7.69 ng/mL vs 10.69 ± 0.84 ng/mL,P < 0.001),while there was a significant decrease in serum adiponectin levels(131.4 ± 7.91 pg/mL vs 342.4 ± 44.48 pg/mL,P < 0.001).In contrast,in group Ⅱ,when compared with group Ⅲ,there was a significant increase in serum leptin and adiponectin levels(35.17 ± 1.06 ng/mL vs 10.69 ± 0.84 ng/mL,P < 0.001,and 436 ± 9.75 pg /mL vs 342.4 ± 44.48 pg/mL,P < 0.05,respectively),while the

关键词： Leptin Adiponectin Hepatitis C virus Hepatic steatosis Hepatic fibrosis

The effect of prolonged treatment with adenosine agonist （R-PIA） in rats subjected to chronic unpredictable mild stress （CUMS）

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The effect of prolonged treatment with adenosine agonist （R...

Retrospective study on mixed neuroendocrine non-neuroendocrine neoplasms from five European centres

中国神经科学学会第六届学术会议暨学会成立十周年庆祝大会

作者： I.a.elshafie Li Man-sng Department of Physiology Basic Medical School Jilin University

＜正＞Chronic stress elicits remarkable alterations to the structure and function of several areas of the central nervous system. It is well established that chronic stress acts as a predisposing and precipitating factor in the onset of certain forms of depression in humans. Among the variety of procedures leading to human depressive-like symptoms in animals, stress procedures take place among the well-validated models. Adenosine is an endogenous neuromodulator, which is prevalent throughout the body and interferes with neurotransmission in the peripheral and central nervous system. Adenosine is not only important in controlling cell proliferation, and as a stress signal of inflammation,but also in the function

关键词： depression R-PIA forced swimming test open-field test cortisol T3 T4

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World Journal of Gastroenterology 2019年第39期25卷 5991-6005页

作者： Melissa Frizziero Xin Wang Bipasha Chakrabarty Alexa Childs Tu V Luong Thomas Walter Mohid S Khan Meleri Morgan Adam Christian Mona.elshafie Tahir Shah Annamaria Minicozzi Wasat Mansoor Tim Meyer Angela Lamarca Richard A Hubner Juan W Valle Mairéad G McNamara Department of Medical Oncology The Christie NHS Foundation TrustManchester M20 4BXUnited Kingdom Department of Analytics and Development The Christie NHS Foundation TrustManchester M20 4BXUnited Kingdom Department of Pathology The Christie NHS Foundation TrustManchester M20 4BXUnited Kingdom Department of Medical Oncology Royal Free London NHS Foundation TrustLondon NW3 2QGUnited Kingdom UCL Cancer Institute University College LondonLondon WC1E 6AGUnited Kingdom Department of Histopathology Royal Free London NHS Foundation TrustLondon NW3 2QGUnited Kingdom Department of Gastroenterology and Medical Oncology Edouard Herriot HospitalHospices Civils de LyonLyon 69003France Department of Gastroenterology Cardiff and Vale University Health BoardUniversity Hospital of WalesCardiff CF14 4XWUnited Kingdom Department of Cellular Pathology Cardiff and Vale University Health BoardUniversity Hospital of WalesCardiff CF14 4XWUnited Kingdom Department of Pathology University Hospitals Birmingham NHS Foundation TrustBirmingham B15 2THUnited Kingdom Department of Hepatology University Hospitals Birmingham NHS Foundation TrustBirmingham B15 2THUnited Kingdom Department of Surgical Oncology The Christie NHS Foundation TrustManchester M20 4BXUnited Kingdom Division of Cancer Sciences University of ManchesterManchester M13 9PLUnited Kingdom

BACKGROUND Mixed neuroendocrine non-neuroendocrine neoplasm(MiNEN)is a rare diagnosis,mainly encountered in the gastro-entero-pancreatic *** is limited knowledge of its epidemiology,prognosis and biology,and the best management for affected patients is still to be *** To investigate clinical-pathological characteristics,treatment modalities and survival outcomes of a retrospective cohort of patients with a diagnosis of *** Consecutive patients with a histologically proven diagnosis of MiNEN were identified at 5 European *** data were retrospectively collected from medical *** samples were reviewed to ascertain compliance with the 2017 World Health Organisation definition of *** responses to systemic treatment were assessed according to the Response Evaluation Criteria in Solid Tumours ***-Meier analysis was applied to estimate survival *** between clinical-pathological characteristics and survival outcomes were explored using Log-rank test for equality of survivors functions(univariate)and Cox-regression analysis(multivariable).RESULTS Sixty-nine consecutive patients identified;Median age at diagnosis:64 ***:63.8%.Localised disease(curable):53.6%.Commonest sites of origin:colon-rectum(43.5%)and oesophagus/oesophagogastric junction(15.9%).The neuroendocrine component was;predominant in 58.6%,poorly differentiated in 86.3%,and large cell in 81.25%,of cases *** distant metastases analysed(73.4%)were occupied only by a poorly differentiated neuroendocrine ***-four percent of patients with localised disease underwent curative surgery;53%also received perioperative treatment,most often in line with protocols for adenocarcinomas from the same sites of *** was offered to most patients(68.1%)with advanced disease,and followed protocols for pure neuroendocrine carcinomas or adenocarcinomas in equal *** localised cases,median recurre

关键词： Mixed neuroendocrine non-neuroendocrine neoplasm 2017 World Health Organisation classification Mixed adeno-neuroendocrine carcinoma Gastro-enteropancreatic tract Digestive system Neuroendocrine neoplasms Survival outcomes

The Impact of Pretransplant Disease Characteristics on the Outcome of Autologous Stem Cell Transplantation for Neuroblastoma with High-Risk Features: A Retrospective Model from a Limited Resources Country

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Journal of Cancer Therapy 2019年第6期10卷 422-432页

作者： Ahmed Elhemaly Mahmoud Hammad Mohamed Saad Zaghloul Maged elshafie Naglaa Elkinaae Mohamed Khaled Alaa El-Haddad Department of Pediatric Oncology National Cancer InstituteCairo UniversityCairoEgypt Department of Pediatric Oncology Children’s Cancer Hospital EgyptCairoEgypt Department of Radiation Oncology National Cancer InstituteCairo UniversityCairoEgypt Department of Radiation Oncology Children’s Cancer Hospital EgyptCairo UniversityCairoEgypt Department of Surgical Oncology National Cancer InstituteCairo UniversityCairoEgypt Department of Surgical Oncology Children’s Cancer Hospital EgyptCairoEgypt Department of Pathology National Cancer InstituteCairo UniversityCairoEgypt Department of Pathology Children’s Cancer Hospital EgyptCairoEgypt Department of Research Children’s Cancer Hospital EgyptCairoEgypt

High-risk neuroblastoma still has poor survival outcome. Improvement of outcome is attributed to the consolidation of chemotherapy by autologous bone marrow transplant. Further improvement of the outcome by tandem autologous transplant is followed by immune therapy. We aimed with this study to correlate initial disease characteristics with the outcome of transplanted high-risk neuroblastoma. A retrospective analysis was done for 73 transplanted patients. Patients were treated in Children’s Cancer Hospital Egypt from July 2012 to July 2015. Seventy patients received Busulphan/Melphalan conditioning. The 3-year overall survival (OS) and event-free survival (EFS) was 63.3% and 51.3%, respectively. Disease stage did not impact the OS and EFS, P = 0.54 and 0.62 respectively. Status of MYCN did not reflect statistically on outcome for tumors with amplified compared to nonamplified (EFS, 49% and 63.1%, respectively). Response after induction chemotherapy pointed that patients who had objective response (complete response, very good partial response and partial response) were better compared to those with less response with EFS and OS of 53.3% and 64.2% compared to 49.3% and 63.5%, respectively, which may indicate that chemo-sensitive tumors have better outcome. By the end of the study, twenty-seven patients relapsed, out of them 25 patients died. Pretransplant risk features for neuroblastoma was nullified by autologous stem cell transplant. The modest outcome observed, highlights some limitations that need to be sorted out in countries with limited resources. The introduction of immune therapy and tandem transplant is needed to achieve a better outcome, yet it adds to more financial burden.

关键词： Neuroblastoma Limited-Resource Autologous Bone Marrow Transplant Busulphan Melphalan

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草原在阿拉伯各国对畜牧生产的重要性

草原与草坪 1982年第3期 23-27页

作者： Mohamed M.elshafie 王莘夫

这篇文章是根据几份统计表、踏勘资料以及技术经济可行性研究撰写的。由于对资料的收集和分析目的及方法不同,这些研究之间会在数值上出现矛盾,这是众所周知的事实,真正的内在原因是草原与其他土地如森林和临界旱作耕地之间的界限不明... 详细信息

这篇文章是根据几份统计表、踏勘资料以及技术经济可行性研究撰写的。由于对资料的收集和分析目的及方法不同,这些研究之间会在数值上出现矛盾,这是众所周知的事实,真正的内在原因是草原与其他土地如森林和临界旱作耕地之间的界限不明确。本

关键词：草原阿拉伯国家索马里苏丹家畜单位草地北非农业生产畜牧生产载畜能力也门民主人民共和国草原面积