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7篇 您的检索式:作者名="Hosam Mostafa"
    题名 作者 年代 出处 被引量
1Interstitial cells of Cajal, the Maestro in health and disease显示文摘Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are the pacemaker cells in gastrointestinal (GI) muscles. Absence, reduction in number or altered integrity of the ICC network may have a dramatic effect on GI system motility. More understanding of ICC physiology will foster advances in physiology of gut motility which will help in a future breakthrough in the pharmacological interventions to restore normal motor function of GI tract. This mini review describes what is known about the physiologic function and role of ICCs in GI system motility and in a variety of GI system motility disorders.Randa M Mostafa Yasser M Moustafa Hosam Hamdy 2010World Journal of Gastroenterology2010,16,26:56
2Seminal plasma anti-Müllerian hormone level correlates with semen parameters but does not predict success of testicular sperm extraction (TESE)显示文摘瞄准:估计精液的血浆 anti-Muellerian 在肥沃、不肥沃的男性的荷尔蒙(AMH ) levalrelationships。方法:84 个男盒子被学习并且把组划分了成四:肥沃的 normozoospermia (n = 16 ) , oligoastheno-teratozoospermia (n = 15 ) ,妨碍的精子缺乏(OA )(n = 13 ) 并且非妨碍的精子缺乏(NOA )(n = 40 ) 。Conventionalsemen 分析为所有情况被做。阴囊的活体检视在 NOA 情况中为阴囊的精子抽取(TESE ) 用完了组织病理学说和新鲜织物检查。NOA 组根据 TESE 结果被细分进失败的 TESE (n = 19 ) 并且成功的 TESE (n = 21 ) 。Seminalplasma AMH 被酶估计连接免疫吸着剂试金(ELISA ) 和浆液小囊的刺激荷尔蒙(FSH ) 仅仅由放射性免疫测定(RIA ) 在 NOA 情况中被估计。结果:Meanseminal AMH 比在有意义的 oligoasthenoteratozoospermia 在肥沃的组是显著地更高的(41.5 ± 10.9 pmol/L 对 30.5 ± 10.3 pmol/L, P < 0.05 ) 。精液的 AMH 没在任何 OA 病人被检测。精液的 AMH 与阴囊的体积断然被相关( r = 0.329 , P =0.005 ),精子计数( r = 0.483 , P = 0.007 ),精子活动性百分比( r = 0.419 , P = 0.021 )并且否定地与精子反常形式百分比( r =-0.413, p = 0.023 )。不重要的关联与年龄是明显的(r =-0.155, P = 0.414 ) 并且血浆 FSH (r =-0.014, P = 0.943 ) 。在 NOA 情况中,精液的 AMH 在 23/40 情况中是可检测的,他们中的 14 个是成功的 TESE (57.5%) 并且在 17/40 情况中是无法发现的,他们中的 10 个是失败的 TESE (58.2%) 。结论:精液的 plasmaAMH 是在所有 OA 盒子中是不在的一个绝对阴囊的标记。然而,精液的 AMH 在 NOA 情况中为成功的阴囊的精子检索有差的可预测性。Taymour Mostafa Medhat K. Amer Guirgis Abdel-Malak Taha Abdel Nsser Wael Zohdy Shedeed Ashour Dina El-Gayar Hosam H. Awad 2007Asian Journal of Andrology2007,9,2:17
3Novel aspects for thermal stability studies and shelf life assessment of modified double-base propellants显示文摘Modified DB propellants, based on energetic nitramine(RDX) were manufactured by solventless extrusion process. Thermal stability and shelf life assessment of modified DB propellant were investigated. Shelf life assessment was evaluated using Van’t Hoff’s formula and artificial aging at 70℃ up to120 days. Quantification of total heat released and heat flow with aging time was conducted using differential scanning calorimetry(DSC) and thermal activity monitoring(TAMIII) respectively. Modified DB formulation based on 20 wt % RDX demonstrated enhanced thermal stability in terms of controlled heat flow, and slow decomposition reactions at elevated temperature. This formulation demonstrated extended service life up to 56 years compared with reference formulation. These novel finding was ascribed to the high thermal stability of RDX and its compatibility with DB constituents. This manuscript shaded the light on novel and effective approach for thermal stability via monitoring thermal activity with aging.Sherif Elbasuney Ashraf.M. A. Elghafour Mostafa Radwan Ahmed Fahd Hosam Mostafa Ramy Sadek Amr Motaz 2019Defence Technology(防务技术)2019,15,3:6
4Multi-layer protective armour for underwater shock wave mitigation显示文摘The effect of underwater shock wave on different target plates has been studied.An underwater shock wave generator(shock tube) was used to study the interactions between water and different constructed targets which act as shock wave mitigation.Target plates,composed of sandwich of two aluminum sheets with rubber and foam in between,were prepared and studied.For comparison,the target plates composed of triple aluminum sheets were tested.The study includes the testing of the selected plates in water under the effect of different peak pressures and the analysis of the results.The strain gauge data and displacement sensors results showed that the multi-layer plates have higher level of underwater shock wave mitigation than the triple aluminum plates with strain and deflection of nearly 50%.Ahmed HAWASS Hosam MOSTAFA Ahmed ELBEIH 2015Defence Technology(防务技术)2015,11,4:2
5Novel approach to quantify the chemical stability and shelf life of modified double-base propellants显示文摘Double-base(DB) propellant is vulnerable to auto-catalytic decomposition reactions during storing with the evolution of nitrogen oxides. Modified DB propellant based on energetic nitramines(RDX) can offer enhanced thrust and action time. This study is devoted to evaluate the impact of RDX on chemical stability and shelf life of DB propellant. Extruded modified DB propellant based on RDX was manufactured by solventless extrusion process. Shelf life assessment was performed using an artificial aging at70 ℃ up to 120 days and employing Van't Hoffs formula. Quantification of evolved NOx gases and stabilizer depletion with aging time was conducted using Bergmann-Junk test and HPLC respectively.Modified DB formulation based on RDX 20 wt % demonstrated enhanced chemical stability and extended service life up to 46 years compared with reference formulation. This finding was ascribed to the high chemical and thermal stability of RDX as well as its compatibility with DB constituents; no side chemical reactions could take place during storing. This manuscript shaded the light on RDX as effective energetic constituent that offered DB propellants with enhanced performance, good chemical stability, and extended service life.Ashraf M.A.Elghafour Mostafa Radwan Ahmed Fahd Hosam E.Mostafa Sherif Elbasuney 2018Defence Technology(防务技术)2018,14,6:1
6Effect of dietary inclusion of sugar syrup on production performance,egg quality and blood biochemical parameters in laying hens显示文摘The effects of dietary inclusion of sugar syrup on quality of egg,cholesterol level,production performance,serum total protein and blood biochemical parameters were evaluated in laying hens.A total of300 commercial Lohmann LSL hens(30 weeks of age) were randomly distributed into 3 dietary treatments which consisted of a normal corn diet containing cornesoy and 2 diets containing 5% and 10%sugar syrup.Each treatment was replicated 5 times(n=20).Egg production,feed intake,body weight and egg weight of laying hens fed different diets were recorded.The experiment lasted for 20 weeks.The Haugh unit scores of hens fed diets with sugar syrup were significantly increased(P < 0.05) compared with the control treatment.The sugar syrup had no significant effect on liver enzymes,total protein,blood glucose and creatinine in all treatments.The eggs laid by hens fed sugar syrup diets had lower cholesterol level(P < 0.05) compared with those laid by hens fed the control diet.Electrophoresis analysis showed that comparable electrophoretic patterns were noticed between serum proteins of treatment groups.From the results,it can be concluded that sugar syrup diets and corn diets have similar effects on feed intake,body weight,production of eggs and blood biochemical parameters in layer hens,which suggests sugar syrup can be used as an energy source for replacing part of corn in poultry layer diets.Ahmed S.Hussein Mostafa A.Ayoub Ahmed Y.Elhwetiy Jamal A.Ghurair Mohsin Sulaiman Hosam M.Habib 2018Animal Nutrition2018,,1:1
7Neutropenic enterocolitis in pediatric leukemia patients treated with intensive chemotherapy in Upper Egypt显示文摘Importance: In low resource countries, there has been scarcity of research on the risk factors associated with neutropenic enterocolitis, a serious complication that commonly develops during treatment of cancer patients.Objective: To identify the pattern of intestinal complications in pediatric leukemia patients treated with intensive chemotherapy, including those with neutropenic enterocolitis;to assess the outcome;and to evaluate the risk factors associated with the mortality in these patients.Methods: During the period from June 2015 to December 2016, a prospective study was carried out on pediatric patients diagnosed with acute leukemia who received induction/or re-induction phases of chemotherapy at South Egypt Cancer Institute. Patients with documented episodes of intestinal complications were included in the study. Recovery or death from an episode of intestinal complication was utilized as the primary outcome measure for the study. Using univariable and multivariable methods, potential risk factors associated with mortality were delineated by logistic regression analysis, both for the entire intestinal complications episodes as a whole and for those episodes of neutropenic enterocolitis only.Results: Out of 88 documented episodes of intestinal complications from 77 patients;58 episodes were identified as neutropenic enterocolitis from 47 patients. In those patients who were having episodes of neutropenic enterocolitis, the presence of abdominal tenderness (OR 4.529, 95%CI 1.062-19.317,P = 0.041);a longer duration of neutropenia (OR 1.215, 95%CI 1.030-1.434,P = 0.021);and hemodynamic instability (OR 17.023, 95%CI 4.095-70.772,P < 0.001), were found to be independently associated with worse outcome.Interpretation: In Upper Egypt, the use of intensive systemic chemotherapy during the induction phase of acute leukemia was found to be associated with potentially lethal intestinal complications. A high index of clinical suspicion is warranted.Ereen Refaat Fouad Ahmed Mohammed Morsy Hosam Eldein Mostafa Kamel Amany Mohamed Ali 2020Pediatric Investigation2020,4,1:0
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