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The Effect of （x-Radiation Dose on CR-39 Polymer Track Detectors Using Positron Annihilation Lifetime and UV-Spectroscopy

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材料科学与工程（中英文版） 2010年第11期4卷 48-52页

作者： mostafa Fawzy Eissa Esmat mohamed Hassan Emad A. Badawi Physics Department Faculty of Science Beni-Suef University Beni-Suef 62511 Egypt Physics Department Faculty of Science Aswan South rally University Aswan 81528 Egypt Physics Department Faculty of Science EI-Minia University EI-Minia 61519 Egypt

Preventive strategies for anastomotic leakage after colorectal resections: A review

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World Journal of Meta-Analysis 2019年第8期7卷 389-398页

作者： mostafa Shalaby Waleed Thabet Mosaad Morshed mohamed Farid Pierpaolo Sileri Department of General Surgery Mansoura University Hospitals Mansoura University Dakahliya Mansoura 35516 Egypt Department of General Surgery UOC C Policlinico Tor Vergata Hospital University of Rome Tor Vergata Rome 00133 Italy

Anastomosis is a crucial step in radical cancer surgery. Despite being a daily practice in gastrointestinal surgery, anastomotic leakage (AL) stands as a frequent postoperative complication. Because of increased morbidity, mortality, combined with longer hospital stay, the rate of re-intervention, and poor oncological outcomes, AL is considered the most feared and life-threatening complication after colorectal resections. Furthermore, poor functional outcomes with a higher rate of a permeant stoma in 56% of patients this could negatively affect the patient’s quality of life. This a narrative review which will cover intraoperative anastomotic integrity assessment and preventive measures in order to reduce AL. Although the most important prerequisites for the creation of anastomosis is well-perfused and tension-free anastomosis, surgeons have proposed several preventive measures, which were assumed to reduce the incidence of AL, including antibiotic prophylaxis, intraoperative air leak test, omental pedicle flap, defunctioning stoma, pelvic drain insertion, stapled anastomosis, and general surgical technique. However, lack of clear evidence of which preventive measures is superior over the other combined with the fact that the decision remains based on the surgeon’s choice. Despite the advances in surgical techniques, AL remains a serious health problem associated with increased morbidity, mortality with additional cost. Many preventative measures were employed with no clear evidence supporting the superiority of stapled anastomosis over hand-Sewn anastomosis, coating of the anastomosis, or pelvic drain. Defunctioning stoma, when justified it could decrease the leakage-related complications and the incidence of reoperation. MBP combined with oral antibiotics still recommended.

关键词： Anastomotic leakage Colorectal Resection Anastomosis Cancer Anastomotic disruption

Development of Calcium Phosphate Ceramics of Controlled Ca/P Ratio as a Bone Substitute

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材料科学与工程（中英文A版） 2013年第7期3卷 467-474页

作者： Manal mostafa Awad Medhat Abdelmonem EI-Messiery mohamed Bahgat E1 Kholy Engineering Physics Department Faculty of Engineering Cairo University Egypt

In this paper, a study was carried out to produce calcium phosphate ceramics whose composition comes close to that of natural dry bone. Dicalcium phosphate dehydrated (CaHPO4·2H20) and calcium carbonate (CaCO3) were mixed at different proportions so that three batches of ceramics whose Ca/P ratio are 1.5, 1.7 and 1.9 are obtained. These ratios lie in close vicinity to the reported data for dry cortical bone (Ca/P = 1.67). Sintering was carried out at temperatures ranging from 1,100 °C to 1,350 °C. The variation in batch composition as well as in sintering temperature has proved to play a decisive role in determining the end product characteristics. Parameters such as bulk density, porosity, firing shrinkage, modulus of mechanical rupture, mineralogical and textural features behavior, were studied to assess their matching with those of human cortical bone.

关键词：磷酸钙陶瓷 Ca 人工骨可控烧结温度自然干燥磷酸二钙温度范围

Current systematic reviews and meta-analyses of COVID-19

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World Journal of Virology 2021年第4期10卷 182-208页

作者： Mahmoud Nassar Nso Nso mostafa Alfishawy Anastasia Novikov Salim Yaghi Luis Medina Bahtiyar Toz Sofia Lakhdar Zarwa Idrees Yungmin Kim Dawa Ongyal Gurung Raheel S Siddiqui David Zheng Mariam Agladze Vikram Sumbly Jasmine Sandhu Francisco Cuevas Castillo Nadya Chowdhury Ravali Kondaveeti Sakil Bhuiyan Laura Guzman Perez Riki Ranat Carlos Gonzalez Harangad Bhangoo John Williams Alaa eldin Osman Joyce Kong Jonathan Ariyaratnam Mahmoud mohamed Ismail Omran Mariely Lopez Akwe Nyabera Ian Landry Saba Iqbal Anoosh Zafar Gondal Sameen Hassan Ahmed Daoud Bahaaeldin Baraka Theo Trandafirescu Vincent Rizzo Department of Internal Medicine Icahn School of Medicine at Mount Sinai/NYC H&H QueensNew YorkNY 11432United States Department of Infectious Diseases Infectious Diseases Consultants and Academic Researchers of Egypt(IDCARE)Cairo 11221Outside of the USEgypt Department of Medicine Division of NephrologyUniversity of Tennessee Health Science CenterKnoxville CityTN 38103United States Department of Medical St.George's UniversityWest Indies 38901Grenada Department of Internal Medicine Faculty of MedicineCairo UniversityCairo 11221Egypt Department of Oncology Broomfiled HospitalMid and South Essex NHS Foundation TrustESSEXChelmsford 12422United Kingdom Department of Critical Care Unit Icahn School of Medicine at Mount Sinai/NYC H&H QueensNew YorkNY 11432United States

BACKGROUND Coronavirus disease 2019(COVID-19)has left a significant impact on the world's health,economic and political systems;as of November 20,2020,more than 57 million people have been infected worldwide,with over 1.3 million *** the global spotlight is currently focused on combating this pandemic through means ranging from finding a treatment among existing therapeutic agents to inventing a vaccine that can aid in halting the further loss of *** To collect all systematic reviews and meta-analyses published related to COVID-19 to better identify available evidence,highlight gaps in knowledge,and elucidate further meta-analyses and umbrella reviews that are yet to be *** We explored studies based on systematic reviews and meta-analyses with the keyterms,including severe acute respiratory syndrome(SARS),SARS virus,coronavirus disease,COVID-19,and SARS *** included studies were extracted from Embase,Medline,and Cochrane *** publication timeframe of included studies ranged between January 01,2020,to October 30,*** that were published in languages other than English were not considered for this systematic *** finalized full-text articles are freely accessible in the public *** Searching Embase,Medline,and Cochrane databases resulted in 1906,669,and 19 results,respectively,that comprised 2594 studies.515 duplicates were subsequently removed,leaving 2079 *** inclusion criteria were systematic reviews or meta-analyses.860 results were excluded for being a review article,scope review,rapid review,panel review,or guideline that produced a total of 1219 *** screening articles were categorized,the included articles were put into main groups of clinical presentation,epi-demiology,screening and diagnosis,severity assessment,special populations,and ***,there was a second subclassification into the following groups:gastrointestinal,cardiovascular,neurological,stro

关键词： Systematic review Meta-analyses COVID-19 Review Coronavirinae