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Search Results: 1 - 10 of 4421 matches for " Bilquis Ibrahim Adham "
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Atomic Diffusion and Electric Conductivity of Gum Arabic/Graphite Composite  [PDF]
Bilquis Ibrahim Adham, H. M. El-Khair
Journal of Materials Science and Chemical Engineering (MSCE) , 2018, DOI: 10.4236/msce.2018.67010
Abstract: In this work, we had adopted solid states reaction kinetic model to calculate diffusion coefficient of graphite Gr in Gum Arabic (GA) as the function of temperatures and concentration? D(t, C). From the calculations we have found that the diffusion coefficient D increases with increasing temperature. At higher temperature the Gr atoms might get enough thermal energy to overcome the activation energy (Ea) barrier and hence can easily be transported to a new atomic position. Diffusion coefficient of Gr at high concentrations had exceeded that at low concentrations by more than two to three orders of magnitude. Such increase can be attributed to the large number of jumps or jump frequency which found to be directly proportion to the Gr concentration. Electric conductivity, calculated by Nernst-Einstein equation, at high concentration Gr had exceeded that at lower concentration. The decrease in conductivity with decreasing Gr concentration might be attributed to the effective charges interactions, which lead to enhance the recombination of charge carriers.
Frequency Dependence of Atomic Diffusivity and Electrical Properties of Gum Arabic/Graphite Composite  [PDF]
Bilquis Ibrahim Adham, Hatim Mohamed El-Khair, Mohamed Ahmed Siddig
Journal of Materials Science and Chemical Engineering (MSCE) , 2015, DOI: 10.4236/msce.2015.39004
Abstract: In this study, Gum Arabic (GA)/Graphite (Gr) composite material was prepared using solid state reaction method. The FTIR peaks obtained were referred to the binding of Gr with the active groups in GA, such as NH2, COOH, CHO, CNC (alkyl amine) and C=CH (aromatic monosubstitution). Atomic diffusivity of Gr in GA was calculated using simple model and was found to varied randomly. This randomness might be due to the attachment of Gr with different active groups of GA. The addition of Gr results in improvement of the conductivity of GA to a far extend as it reaches the semiconductor range. The random variation in conductivities of the samples can be attributed to the effect of high frequency range, where the effect of phonon-electron is dominant. The samples subjected to the impedance spectroscopy (IS) for second and third time were acquired different diffusivities as well as conductivities. Such variations might indicate that IS was a processing technique similar to thermal treatment since it boosted the Gr atomic diffusion.
Insulin 3-like hormone and its role in epididymo-testicular descent
Hadziselimovic, Faruk;Adham, Ibrahim;
International braz j urol , 2007, DOI: 10.1590/S1677-55382007000300015
Abstract: purpose: the role of insulin 3-like (insl3) hormone signaling in the testicular descent process has been demonstrated. the purpose of the present study was to evaluate epididymal development in insl3-deficient mice. materials and methods: heterozygous and homozygous insl3 mutants of a mixed cd1 x 129/sv genetic background were generated by breeding insl3-/- females with insl3+/- males, and their genotypes were determined by polymerase chain reaction. on the first postnatal day, newborn males were sacrificed, embedded in paraffin, and cut in 4 μm sections. sections were stained with hematoxylin/eosin and immunoreacted with anti-± actin antibody. results: an analysis of stained sections indicated an arrest in the development of the epididymis in all homozygous mice. the cauda and corpus of the epididymis were undersized. compared to the heterozygous epididymis, the homozygous epididymis had fewer peritubular layers and dwarfish musculature. we confirmed this with immunostaining with monoclonal antibodies against ± -smooth muscle actin. conclusion: defective development of the smooth musculature in the epididymis of insl3 homozygous mutant mice, combined with its high intraabdominal undescended position, supports previous observations regarding the importance of intact epididymis morphology and function for descent of the epididymo-testicular unit.
Vitamin D Status, C-Reactive Protein and Risk of Coronary Artery Disease—A Hospital-Based Study  [PDF]
Adham I. Ahmed
Pharmacology & Pharmacy (PP) , 2014, DOI: 10.4236/pp.2014.513125
Abstract: Coronary artery disease (CAD) is a leading cause of deaths of women and men worldwide. In this study we tried to assess the relationship between Vitamin D status and CAD. Vitamin D has a big role in the body and debate on its effect on the heart and coronary arteries still exits. C-reactive protein (CRP) is an inflammatory marker which may rise in CHD. Aim: To determine the relationship between Vitamin D status and CRP and CAD risk among patients at middle zone of the Gaza Strip. Methodology: A retrospective case-control, hospital-based study was conducted at Al-Aqsa Martyr’s Hospital in Dier El-Balah City from August 2014 to October 2014. Patients (n = 100) aged above 40 years with confirmed CAD history were recruited using a purposeful, non-random sampling. Vitamin D status assessed by food frequency questionnaire of dietary Vitamin D and serum Vitamin D. Serum Vitamin D was measured using Calbiotech’s 25-OH Vitamin D ELISA and serum CRP was measured by the latex agglutination. SPSS V.19 used for data analysis. Results: Mean of age among cases was (68.28 ± 8.01) higher than controls (57.82 ± 9.61) (P = 0.01); percent of males (54%) was higher than females (46.0%) among cases. Sun exposure and mean duration of daily exposure to sunlight were higher in cases (P > 0.05). Cases were consumed less servings of Vitamin D rich food than controls (P > 0.05). Percent of Vitamin D deficiency among cases (42%) was higher than controls (16.0%) (P = 0.002). Mean of serum Vitamin D in association with positive CRP was (79.95 ± 70.6) lower than those with negative CRP (106.06 ± 68.966) (P = 0.13). Percent of positive serum CRP among cases 30% was higher than controls 10% (P = 0.01). Conclusion: Vitamin D deficiency was associated with positive CRP in patients with CAD. Vitamin D may have an anti-inflammatory effect regarding to our results.
Comparative Electrochemical Noise Study of the Corrosion of Different Alloys Exposed to Chloride Media  [PDF]
Adham M. Nagiub
Engineering (ENG) , 2014, DOI: 10.4236/eng.2014.613091
Abstract: This paper describes the corrosion behavior of aluminum, copper, and mild steel when exposed to chloride media using both electrochemical noise analysis (ENA) and electrochemical impedance spectroscopy (EIS). Analysis of electrochemical noise (EN) data demonstrated the need for removal of drifts in both potential and current fluctuations. Statistical analysis such as noise resistance, localization index, skewness and kurtosis has been evaluated. Noise resistance showed a good agreement with polarization resistance. Fast Fourier transformation (FFT) has been applied to convert EN data from the time domain to the frequency domain. Spectral noise plots showed a good agreement with impedance spectra for the different alloys determined at the same exposure time. Spectral and statistical analysis can extract useful information from EN data.
Detecting the Shallow Subsurface Chinks below Buildings of District No. 27 at 15th May City Using ERT, and SSR, Helwan, Egypt  [PDF]
Alhussein Adham Basheer
Current Urban Studies (CUS) , 2016, DOI: 10.4236/cus.2016.41002
Abstract: In 1986, the Egyptian government planned 15th May City, which is located in the southeast of Helwan city. It is considered one of the most propitious cities that pull out the residents who live around the Nile valley in Egypt. This study examines the district No. 27. The chief aim of this paper is to identify the chinks in the near subsurface layer under buildings and calculate approximately its displacement to attain its reasons. This research uses shallow seismic refraction and two dimension electrical resistivity surveys. The three-dimension electrical imaging method is interpreted in the form of the geoelectric layers’ depths and thicknesses. Accordingly, the interpretation proposes sequences of three layers. Moreover, the borders of the crack can be noticed. The results of shallow seismic refraction method show the same sequences of three seismic layers. The interpreted layers from both techniques are dried limestone “calcite to dolomite” layer; the second is wetted Marley limestone; and the third Layer is semi-wetted Marley limestone. Alternatively, these parameters separate the location into layers of dissimilar competence nature and dissimilar appropriateness. The interpretation of both methods delineates five chinks or cracks. These chinks extend in the study area. These chinks can be watched by naked eyes in the buildings close to the area of the study. This study recommends getting rid of the gardens that is located between buildings to avoid the negative effect of irrigation water.
Adhesion Protein VSIG1 Is Required for the Proper Differentiation of Glandular Gastric Epithelia
Odgerel Oidovsambuu, Gunsmaa Nyamsuren, Shuai Liu, Wolfgang G?ring, Wolfgang Engel, Ibrahim M. Adham
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0025908
Abstract: VSIG1, a cell adhesion protein of the immunoglobulin superfamily, is preferentially expressed in stomach, testis, and certain gastric, esophageal and ovarian cancers. Here, we describe the expression patterns of three alternatively spliced isoforms of mouse Vsig1 during pre- and postnatal development of stomach and potential function of Vsig1 in differentiation of gastric epithelia. We show that isoforms Vsig1A and Vsig1B, which differ in the 3′untranslated region, are expressed in the early stages of stomach development. Immunohistochemical analysis revealed that VSIG1 is restricted to the adherens junction of the glandular epithelium. The shorter transcript Vsig1C is restricted to the testis, encodes an N-terminal truncated protein and is presumably regulated by an internal promoter, which is located upstream of exon 1b. To determine whether the 5′ flanking region of exon 1a specifically targets the expression of Vsig1 to stomach epithelia, we generated and analyzed transgenic mice. The 4.8-kb fragment located upstream of exon 1a was sufficient to direct the expression of the reporter gene to the glandular epithelia of transgenic stomach. To determine the role of VSIG1 during the development of stomach epithelia, an X-linked Vsig1 was inactivated in embryonic stem cells (ESCs). Although Vsig1?/Y ESCs were only able to generate low coat color chimeric mice, no male chimeras transmitted the targeted allele to their progeny suggesting that the high contribution of Vsig1?/Y cells leads to the lethality of chimeric embryos. Analysis of chimeric stomachs revealed the differentiation of VSIG1-null cells into squamous epithelia inside the glandular region. These results suggest that VSIG1 is required for the establishment of glandular versus squamous epithelia in the stomach.
EVALUATION OF ULTRASOUND GUIDED FINE NEEDLE ASPIRATION CYTOLOGY IN DIAGNOSIS OF SPACE OCCUPYING LESIONS OF LIVER
Bilquis A. Suleman
The Professional Medical Journal , 1995,
Abstract: From March 1992 to February 1995, Two hundrad and three (203) cases of space occupying lesions of liverwere aspirated under ultrasound guidance. These aspirates were mostly done by senior radiology staff atSheikh Zayed Hospital, Lahore. The smears and cell blocks when available, were studied by consultantpathologists. Based on histological, cytological and clinical findings, final diagnosis was reached. In 2.5%cases the material aspirated was reported as inadequate. Among the benign aspirates, liver abscess was themost common lesion diagnosed in 26 (59.1%) cases. Age changes with mild dys-plasia and fatty changewere other two common benign diagnostic features. In malignant aspirate, metastatic adenocarcinoma wasthe most common diagnosis seen in 77 (50%) cases and primary hepato-cellular carcinoma was diagnosedin 58 (37.6%) cases. In cases where cell blocks were available, validity of cytological diagnosis showed highdegree of sensitivity and specificity with no false positive reports. Overall results indicate high prevalenceof infections, liver disease and primary hepatocellular carcinoma in our study group as compared to resultsin other parts of the world. Value of ultrasound guided aspiration, importance of coagulation screening andusefulness of the microhistology (cell block preparations) is stressed. The cytological features of primaryhepatocellular carcinoma, and of metastatic lesions are described.
PRIMARY MALIGNANT CARCINOID TUMOUR OF THE KIDNEY
Bilquis A. Suleman
The Professional Medical Journal , 1995,
Abstract: A primary malignant carcinoid tumour of right kidney in a 40 years old male patient is described. Theneoplasm displayed histological features resembling the carcinoid tumours of gastrointestinal or respiratorytracts with trabecular pattern predominating. It revealed focal argyrophil positivity and was argentaffinnegative. Despite an extensive search, no primary tumour else-where in the body was detected.
Récrire pour écrire le présent : le théatre de Carmelo Bene
Leila Adham
Trans : Revue de Littérature Générale et Comparée , 2007,
Abstract: Contrairement à la littérature, le théatre est à la fois un texte écrit et un texte joué. C’est en partant de ce constat évident que Carmelo Bene, acteur, dramaturge et théoricien du théatre, construit un projet dramaturgique dont le double objectif est d’écrire le présent, et rendre impossible toute forme de re-présentation. Fondée sur la réécriture des classiques du répertoire occidental et notamment du Hamlet de Shakespeare, la démarche de Bene est aussi paradoxale qu’ambitieuse puisqu’elle entend résoudre la contradiction d’une répétition sans redite en formulant ce qu’il conviendrait d’appeler un théatre de l’instantané. Contrary to the rest of literature, drama offers both a text to read and a text to play. Working on the basis of this fact, Carmelo Bene, an Italian actor, playwright and theoretist, imagines a new type of drama whose twofold objective is to write of the present and to make performance impossible. Based on the rewriting of western masterpieces such as Shakespeare’s Hamlet, Bene’s approach may seem both paradoxical and ambitious, as it purports to solve the contradiction of finding a form of repetition which does not repeat, through the formulation of what could be called a “drama of the instant”. Contrariamente a la literatura, el teatro es a la vez un texto escrito y un texto actuado. Tomando esta constatación como punto de partida Carmelo Bene, actor, dramaturgo y teórico del teatro, construye un proyecto dramatúrgico cuyo objetivo doble es el de escribir el presente, y volver imposible cualquier forma de re-presentación. Fundada en la reescritura de los clásicos del repertorio occidental, y en gran medida la obra Hamlet de Shakespeare, la labor de Bene es a un tiempo paradójica y ambiciosa pues intenta resolver la contradicción de una repetición sin iteración, al formular lo que convendría llamar un teatro de la instantaneidad.
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