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Identification and Conservation State of Painted Wall Plasters at the Funerary House in Necropolis of Tuna el-Gebel, el-Minia-Upper Egypt

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Open Journal of Geology 2017年第7期7卷 923-944页

作者： Nabil A. abd el-Tawab Bader abdelkareem E. ahmed Conservation Department Faculty of Archaeology South Valley University Qena Egypt

During this study, the principal aim carried out was to obtain more information about technique and conservation conditions of the Egyptian wall paintings during the Roman period in the funerary house in necropolis of Tuna el-Gabal, el-Minia-Upper Egypt. It’s going back to 2nd century AD and involves different sites of Ptolemaic and Roman chapels;some are in the immaculate established style while others are a blend of Pharaonic-Greek style and both are secured with mural painting. Deterioration problems observed on the wall paintings of the funerary house are, loss of plaster layers, disintegration of plaster layers, loss of paint layers (blistering and peeling), discoloration and severely damaged owing to a lot of deterioration factors as weakness of mud brick support, deterioration of surface treatments and to the widespread presence of different salts. The materials used in the painting, preparation layers and the state of conservation of the mural painting at funerary house were investigated by integrated physio-chemical measurements, particularly micro-Raman spectroscopy (µRaman), light optical microscopy (LOM), scanning electron microscopy (SEM) coupled with an energy dispersive X-ray analysis system (EDX), X-ray powder diffraction (XRD) and Fourier transform infrared (FT-IR). In addition, the morphology of multilayer plaster from wall painting was investigated using atomic force microscopy (AFM). A wide color palette utilized as a part of the necropolis has been identified with mineral pigments and pigment mixtures. It is found that, the paints were based on an organic binder and traditional pigments (azurite, hematite, ochre, vegetable black) were used as colorants on plaster. The examination demonstrated that the preparatory layer is verging on made of pure lime while the plaster layer based mainly of lime and gypsum with variable amounts of quartz. The obtained results provided information about the painting technique, chemical composition, crystal st

关键词： Tuna el-Gebel Roman Mortuary Houses Pigments Raman Microscopy Atomic Force Microscope (AFM)

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An Ex-Press implant versus trabeculectomy in a fibrotic bleb with late failure after previous trabeculectomy

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International Journal of Ophthalmology(English edition) 2021年第3期14卷 383-387页

作者： Faried Wagdy Tharwat H.Mokbel Hisham elsorogy ahmed Alnagdy Dina.abd elfattah abd-elmonem A.elhesy Menofia University Hospital Menofia UniversityMenofia 32511Egypt Mansoura Ophthalmic Center Faculty of MedicineMansoura UniversityMansoura 35516Egypt

AIM: To compare the outcome of an Ex-Press implant and subscleral trabeculectomy(SST) in the management of glaucoma after previous trabeculectomy on a fibrotic ***: This randomized prospective study included 28 eyes from 28 patients(age range: 42-55 y) with primary open angle glaucoma(POAG) presented with elevated intraocular pressure(IOP) with fibrotic bleb despite previous SST for more than 4 mo. The eyes enrolled in the study were divided into two groups: group I(subjected to Ex-Press implant surgery) and group II [subjected to SST with mitomycin C(MMC)]. The follow-up continued one year after surgery to evaluate IOP, visual acuity(VA), visual field(VF), and postoperative complications. RESULTS: A significant decrease in IOP was found in both groups with a higher reduction in Ex-Press implant surgery with the mean IOP of 14.50 mm Hg(P=0.001), while the SST group recorded the mean IOP of 16.50 mm Hg(P=0.001) after one year. However, the difference between the two groups in terms of the decrease in IOP was insignificant. Fewer postoperative complications were recorded in the Ex-Press implant surgery and more cases requiring further anti-glaucomatous medications were seen in the SST group. Both groups showed stability in terms of VA and ***: Ex-Press implant surgery and SST with MMC are two surgical alternatives for controlling IOP in late failure that occurs more than 4 mo after previous SST with a fibrotic bleb. However, Ex-Press shunt is a safer surgery with fewer complications.

关键词： Ex-Press implant trabeculectomy glaucoma fibrotic bleb

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Natural radioactivity levels and radiation hazards for gypsum materials used in Egypt

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Natural Science 2014年第1期6卷 5-13页

作者： ahmed Hassan Korna Soad Saad Fares Magda.abd el-Rahman Department of Physics Faculty of Science Al Baha University Al Bahah KSA Department of Radiation Physics National Center of Radiation Research and Technology NCRRT Atomic Energy Authority Cairo Egypt

Radionuclides naturally occurring in building materials may significantly contribute to the annual doses to the public. For instance, familiar building materials such as the concrete and gypsum board have been reported to produce a dose of about 0.04 mSv per year for a typical person (NCRP 1987c). External as well as internal exposures are two pathways of radiation dose imparted to human beings from the building materials. As information on the radioactivity of such materials is lacking, the study of gypsum materials used in Egypt was carried out in order to estimate the annual dose to the Egyptian population due to natural radionuclides in building materials. During the study, 18 samples of commonly used gypsum raw materials were collected and measured. The activity concentrations were determined by gamma ray spectrometry. Their mean values were in the ranges of 499.29 ± 11.53 Bq·kg-1 for 40K, 91.97 ± 2.61 Bq·kg-1 for 226Ra, 37.62 ± 1.67 Bq·kg-1 for 238U and 42.27 ± 2.22 Bq·kg-1 for 232Th. The activity indexed Iγ for 18, different gypsum samples varied from 0.31 ± 0.03 to 2.3 ± 0.19 and the radium equivalent activity (Raeq), from 38.81 ± 1.68 to 324.7 ± 9.42. These values are lower than the limit of 370 Bq·kg-1 adopted by the Organization for Economic Cooperation and Development (OECD). The average indoor annual effective gamma dose rate (DE) in (mSv/y) for the people, caused by the building materials of dwellings, was assessed for most commonly gypsum materials. It was estimated to be in the range from 0.10 ± 0.003 mSv/y to 0.74 ± 0.08 mSv/y. The internal and external hazard indices (Hin, Hex) and the absorbed dose rate in air D in each sample were evaluated to assess the radiation hazard for people living in dwelling made of the studied materials. The absorbed dose rate of indoor air in samples G1, G2, G11, G17 and G18 is less than the international recommended value which is 55 nGyh-1. While the absorbed dose rate for samples G3, G4, G5, G6, G7, G8, G9, G10, G12

关键词： Gypsum Gamma Spectrometer Hazard Indices NORM Building Materials

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The Usefulness of Diffusion Weighted and Contrast Enhanced Magnetic Resonance Imaging in Characterization of Inconclusive Ovarian Mass

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2020年第1期9卷 24-33页

作者： Ghada Mohammed abd el Razeq Mohammad A. M. ahmed Department of Radiodiagnosis Qena Faculty of Medicine South Valley University Qena Egypt Department of Obstetrics & Gynecology Qena Faculty of Medicine South Valley University Qena Egypt

Introduction: Ovarian cancer is the commonest reason for death in females due to gynecologic malignancy around the world. In contrast to other gynecologic tumours, the definitive diagnosis is accomplished days after of the index surgery by the histopathology. Preoperative assessment based on conventional MRI is not accurate. Information is expanding increasing about the ability of new MRI modalities to assess ovarian mass. Aim of the study: To assess the ability of dynamic contrast-enhanced MRI (DCE–MRI), and Diffusion-weighted image (DWI) to describe uncertain ovarian masses. Patients and Methods: This is a retrospective study. Patients were referred from radio-diagnosis department and gynecology department of Qena faculty of medicine hospitals, South Valley University. Patients had uncertain adnexal masses at ultrasound. Magnetic resonance examination was doneutilizing 1.5 Tesla machine. The protocol included T1WI, T2WI, T1WI following contrast, and DWI. Results: We included 44 patients with different forms of complex cystic and solid ovarian masses. The final pathology of the ovarian masses was 18 benign, 4 borderline, and 22 malignant. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for DWI were 100%, 94.4%, 96.3%, 100%, and 97.7% respectively. The performance of DWI was higher than the conventional MRI and DCE-MRI. Conclusion: DCE-MRI and DWI have accepted ability to recognize malignant ovarian mass.

关键词： Ovarian Contrast Diffusion MRI

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electro Analytical Determination of Di Hydroxybenzene Isomers Using Glassy Carbon electrode

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Journal of Chemistry and Chemical Engineering 2014年第7期8卷 654-661页

作者： Mahmoud Khodari ahmed abd el-Rady Ekram Rabee Nada Nabil Chemistry Department Faculty of Science South Valley University Qena 83523 Egypt

In this study, the electrochemical oxidation of CT （catechol）, HQ （hydroquinone） and RS （resorcinol） was investigated using cyclic and linear sweep voltammetries at GCE （glassy carbon electrode）. The GCE showed an excellent electro activity and reversibility towards the oxidation of these isomers at different conditions. HQ and CT showed one defined oxidation peak and one defined reduction peak while RS showed one defined oxidation peak. These isomers were determined also in their binary and tertiary mixtures. The calibration curves for CT, HQ and RS were obtained in the ranges of 5 × 10-6 to 1 × 10-3 ***-3, 5 × 10-6 to 5 × ***-3 and 1 × 10-5 to 1× 10-3 ***-3, respectively. The detection limits were 9 ×10-7, 3 × 10-7, 6 × 10-6 ***3 for CT, HQ and RS, respectively. At the optimal experimental conditions, these isomers were determined in different water samples. Also, the removal of catechol from aqueous solution by adsorption on activated charcoal and alumina was studied. After 24 h, 88.7% and 65.9% of catechol was removed using charcoal and alumina, respectively.

关键词： Di hydroxybenzene isomers glassy carbon electrode electroanalytical chemistry removal ofcatechol adsorption.

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Assessment of Sub-Endometrial Junction Zone by 3-Dimensional Transvaginal Ultrasound in Unexplained Recurrent Implantation Failure and Its Effect on ICSI Outcomes

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Open Journal of Obstetrics and Gynecology 2019年第1期9卷 54-61页

作者： abd el-Naser abd el-Gaber Ali Syed A. Taha Mohammed F. abd el-Ghany Mustafa M. Khodry ahmed M. Abbas ART Unit Department of Obstetrics & Gynecology Faculty of Medicine South Valley University Qena Egypt Department of Obstetrics & Gynecology Faculty of Medicine Assiut University Assiut Egypt

BACKGROUND: Sub-endometrial junction zone (JZ) plays an important role in most of reproductive functions. OBJECTIVE: To find out the effect of the sub-endometrial JZ thickness assessment by 3-D trans-vaginal ultrasound (TVUS) on intracytoplasmic sperm injection (ICSI) outcomes in patients with unexplained recurrent implantation failure (RIF). SETTING: ART Unit of Obstetrics and Gynecology Department, Faculty of Medicine, South Valley University, Qena, Egypt. DURATION: From April 2016 to October 2018. STUDY DESIGN: A prospective observational study. METHDS: Fifty couples with history of unexplained RIF in previous ICSI cycles and prepared for another ICSI cycle (group I) and fifty couples with unexplained infertility prepared for ICSI for the first time (group II) had been included in this study. At time of ovum pick up, 3-DTVUS was done for all cases in both groups for assessment of sub endometrial junction zone thickness and correlated with ICSI outcome. RESULTS: There were statistically significant differences between group I and group II in JZ thickness in the 3 uterine regions (fundus, anterior and posterior walls) with p 0.001, but there were mildly statistically significant differences between both groups in chemical and clinical pregnancy rates with p ely correlated with increased embryo implantation rates in ICSI procedures, the thinner the JZ thickness was associated with higher pregnancy rates (both chemical and clinical pregnancy rates).

关键词： Three Dimensional Trans-Vaginal Ultrasound Junction Zone ICSI Recurrent Implantation Failure

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Predictive value of serum lactate dehydrogenase in diagnosis of septic shock in critical pediatric patients:A cross-sectional study

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Journal of Acute Disease 2021年第3期10卷 107-111页

作者： HebatAllah Fadel Algebaly ahmed abd-elal Rasha el Kaffas elshymaa Salah ahmed Pediatric Critical Care Department Cairo University School of MedicineEgypt Department of Clinical and Chemical Pathology Cairo University School of MedicineEgypt

Objectives:To determine the predictive value of lactate dehydrogenase(LDH)in the diagnosis of septic shock and its association with other prognostic scores in critical pediatric ***:A cross-sectional study was performed at Children’s Hospital of Cairo University between June 2019 and December 2019.A total of 200 pediatric patients were divided into the septic shock group[100 critically ill patients with septic shock from the pediatric intensive care unit(PICU)]and the control group(100 patients with only sepsis).LDH was determined in the first 24 hours of *** sensitivity and specificity of LDH in diagnosis of septic shock were assessed;the levels of related indicators of patients with different etiologies were compared;correlations between LDH,Paediatric Index of MortalityⅡ,and Pediatric Sequential Organ Failure Assessment(pSOFA)were ***:Median LDH was 512μL(406.50-663.00)in the septic shock group and was significantly higher than that[190μL(160.00-264.50)]in the control group(Pelation was found between pSOFA and LDH(r=0.503,P<0.001).Conclusions:LDH could be a potential inflammatory marker in the diagnosis of septic shock and is valuable for PICU admission decisions.

关键词： Lactate dehydrogenase Septic shock pSOFA

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Predictors of Recurrence of Hepatocellular Carcinoma after Transarterial Chemoembolization: Role of Hepatocyte Growth Factor

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Open Journal of Gastroenterology 2020年第6期10卷 151-165页

作者： Amr Mohamed Zaghloul ahmed Sedky Ali Hussein Mohammed Samer A. el-Sawy ahmed abd el Rady ahmed Emad eldin Nabil Tropical Medicine and Gastroenterology Department Sohag University Sohag Egypt Department of Clinical Pathology Sohag University Sohag Egypt Department of Internal Medicine Sohag University Sohag Egypt Biochemistry Department Sohag University Sohag Egypt Interventional Radiology Department Alazhar University (Assuit Branch) Assuit Egypt Department of Oncology Sohag University Sohag Egypt

Background: Hepatocellular carcinoma is the third leading cause of tumor related mortality and develops mostly in patients with chronic liver disease and liver cirrhosis. Human hepatocyte growth factor (HGF) is produced in various organs of the body and is characterized as a multifunctional factor with various biologic activities. Aim: Our aim was to investigate the predictive factors of recurrence specially the role of HGF in patients with HCC treated with TACE. Patients and Methods: one hundred HCC patients treated by TACE who achieved complete response were included and divided into two groups according to disease free survival (DFS) status at 1 year: the non-early recurrence (NER) group (1) and the early recurrence (ER) group (2). Univariate binary logistic regression analysis for the possible risk factors of recurrence showed that AFP, multinodularity and HGF level were significant. Conclusion: high AFP, multinodularity and high HGF were inter-related possible risk factors for

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Removing Iron Ions Contaminants from Groundwater Using Modified Nano-Hydroxyapatite by Nano Manganese Oxide

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Journal of Water Resource and Protection 2019年第6期11卷 789-809页

作者： Mohammed abd-el-Aal ahmed Ayash Tarek ahmed Seaf elnasr Madiha Hassan Soliman Sohag Company for Water and Waste Water Dar El Salam Sohag Egypt Chemistry Department Faculty of Science Al-Azhar University Assiut Egypt Chemistry Department Collage of Science Jouf University KSA Chemistry Department Faculty of Science Helwan University Cairo Egypt

In this article, we study modified nano-hydroxyapatite (HAp) by nano manganese oxide (Mn3O4) as adsorbent material to remove iron ions from groundwater. Different parameters were studied to option optimum conditions of removing such as contact time, pH, initial concentration, a dosage of adsorbent, agitation speed and temperature. Kinetics studies included first order (R2 = 0.915), pseudo-first order (R2 = 0.936), second order (R2 = 0.948), pseudo-second order (R2 = 0.995), elovich equation model (R2 = 0.977), intraparticle diffusion (R2 = 0.946), Natarajan and Khalaf (R2 = 0.915) were carried out, the obtained results revealed that the pseudo-second order is the best to describe the adsorption process because the correlation coefficient is approaching one (R2 = 0.995). Adsorption isotherm was calculated by using Freundlich, Langmuir and Temkin constants, adsorption capacity from Langmuir model was 0.606 mg/g. Thermodynamic parameters (ΔG, ΔH = ?51 KJ/mol, and ΔS = ?142 (KJ/mol)) for the adsorption process were also calculated and discussed.

关键词： Groundwater Adsorption Nano Materials Hydroxyapatite Manganese Oxide Iron Ions Kinetic Thermodynamic

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Assessment the Physico-Chemical Characteristics of Water and Sediment in Rosetta Branch, Egypt

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Journal of Water Resource and Protection 2015年第13期7卷 1075-1086页

作者： Yasser ahmed el-Amier Mahmoud abd el-Kawy Zahran Sadam Hameed Al-Mamory Faculty of Science Department of Botany Mansoura University Mansoura Egypt

Water quality of Rosetta Branch may be changed by several factors in the last decades as a result of anthropogenic activities. So, it’s important to study the physicochemical characteristics of both water and sediment in the Rosetta Branch. Two identified sources are the main origin of most pollutants in this branch, namely: el-Rahawy drain and industrial activities in Kafr el-Zayat city. From the data of water quality index (WQI) based on six important parameters (pH, T °C, DO, BOD, COD and TP), it indicates that site 2 (from Kom Hamada to Edfina) is more polluted than the other two sites (from el-Qanater el-Khairia to Kom Hamada and from Edfina to Rosetta). The concentrations of heavy metals increase in sites that are more affected by drainage water from different drains. Great efforts are needed and wastewater must be treated before draining it into the River Nile water.

关键词： Rosetta Branch Physicochemical Characteristics Pollution WQI

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