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| 1 | Interstitial 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 | 2010 | World Journal of Gastroenterology2010,16,26: | 56 |
| 2 | Rubber band ligation for 750 cases of symptomatic hemorrhoids out of 2200 cases显示文摘AIM: To study the results for the treatment of symptomatic hemorrhoids using rubber band ligation (RBL) method. METHODS: A retrospective study for 750 patients who came to the colorectal unit from June, 1998 to September, 2006, data was retrieved from archived fi les. RBL was performed using the Mc Gown applicator on an outpatient basis. The patients were asked to return to out-patient clinic for follow up at 2 wk, 1 mo, 6 mo and through telephone call every 6 mo for 2 years). RESULTS: After RBL, 696 patients (92.8%) were cured with no difference in outcome for second or third degree hemorrhoids (P = 0.31). Symptomatic recurrence was detected in 11.04% after 2 years. A total of 52 patients (6.93%) had 77 complications from RBL which required no hospitalization. Complications were pain, rectal bleeding and vaso-vagal symptoms(4.13%, 4.13% and 1.33% of patients, respectively). At 1 mo there were a significant improvement in mean SF-36 scores over baseline in five items, while after 2 years there were improvement in all items over baseline, but not significant. No significant manometeric changes after band ligation. CONCLUSION: RBL is a simple, safe and effective method for treating symptomatic second and third degree hemorrhoids as an out patient procedure with signifi cant improvement in quality of life. RBL doesn't alter ano-rectal functions. | Ayman M El Nakeeb Amir A Fikry Waleed H Omar Elyamani M Fouda Tito A El Metwally Hosam E Ghazy Sabry A Badr Mohmed Y Abu Elkhar Salih M Elawady Hisham H Abd Elmoniam Waiel W Khafagy Mosaad M Morshed Ramadan E El Lithy Mohamed E Farid | 2008 | World Journal of Gastroenterology2008,14,42: | 24 |
| 3 | Seminal 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 | 2007 | Asian Journal of Andrology2007,9,2: | 17 |
| 4 | Diagnosis and management of choledochal cyst: 20 years of single center experience显示文摘We report the first case series from Africa and the Middle East on choledochal cyst,a disease which shows significant geographical distribution with high incidence in the Asian population.In this study,the epidemiological data of the patients are presented and analyzed.Attention was paid to diagnostic imaging and its accuracy in the diagnosis and classification of choledochal cyst.Most cases of choledochal cyst disease have type?ⅠandⅣ-A cysts according to the Todani classification system,which support the etiological theories of choledochal cyst,especially Babbitt’s theory of the anomalous pancreaticobiliary duct junction,which are clearly stated.The difficulties and hazards of surgical management and methods used to avoid operative complications are clarified.Early and late postoperative complications are also included.This study should be followed by multicenter studies throughout Egypt to help assess the incidence of choledochal cysts in one of the largest populations in Africa and the Middle East. | Nabil Gadelhak Ahmed Shehta Hosam Hamed | 2014 | World Journal of Gastroenterology2014,20,22: | 13 |
| 5 | Ankylosing spondylitis: A state of the art factual backbone显示文摘Ankylosing spondylitis(AS) is a chronic inflammatory disease that affects 1% of the general population. As one of the most severe types of spondyloarthropathy, AS affects the spinal vertebrae and sacroiliac joints, causing debilitating pain and loss of mobility. The goal of this review is to provide an overview of AS, from the pathophysiological changes that occur as the disease progresses, to genetic factors that are involved with its onset. Considering the high prevalence in the population, and the debilitating life changes that occur as a result of the disease, a strong emphasis is placed on the diagnostic imaging methods that are used to detect this condition, as well as several treatment methods that could improve the health of individuals diagnosed with AS. | Mohammad Ghasemi-rad Hosam Attaya Emal Lesha Andrea Vegh Tooraj Maleki-Miandoab Emad Nosair Nariman Sepehrvand Ali Davarian Hamid Rajebi Abdolghader Pakniat Seyed Amirhossein Fazeli Afshin Mohammadi | 2015 | World Journal of Radiology2015,7,9: | 13 |
| 6 | Recombinase polymerase amplification as a promising tool in hepatitis C virus diagnosis显示文摘Hepatitis C virus(HCV)infection represents a significant health problem and represents a heavy load on some countries like Egypt in which about 20%of the total population are infected.Initial infection is usually asymptomatic and result in chronic hepatitis that give rise to complications including cirrhosis and hepatocellular carcinoma.The management of HCV infection should not only be focus on therapy,but also to screen carrier individuals in order to prevent transmission.In the present,molecular detection and quantification of HCV genome by real time polymerase chain reaction(PCR)represent the gold standard in HCV diagnosis and plays a crucial role in the management of therapeutic regimens.However,real time PCR is a complicated approach and of limited distribution.On the other hand,isothermal DNA amplification techniques have been developed and offer molecular diagnosis of infectious dieses at point-of-care.In this review we discuss recombinase polymerase amplification technique and illustrate its diagnostic value over both PCR and other isothermal amplification techniques. | Hosam Zaghloul Mahmoud El-shahat | 2014 | World Journal of Hepatology2014,6,12: | 12 |
| 7 | Reversibility of minimal hepatic encephalopathy following liver transplantation in Egyptian cirrhotic patients显示文摘AIM To evaluate the reversibility of minimal hepatic encephalopathy(MHE) following liver transplantation(LT) in Egyptian cirrhotic patients. METHODS This prospective study included twenty patients with biopsy-proven liver cirrhosis listed for LT and twenty ageand sex-matched healthy control subjects. All underwent neuro-psychiatric examination, laboratory investigations, radiological studies and psychometric tests including trail making test A(TMT A), TMT B, digit symbol test and serial dotting test. The psychometric hepatic encephalopathy score(PHES) was calculated for patients to diagnose MHE. Psychometric tests were repeated six months following LT in the cirrhotic patient group. RESULTS Before LT, psychometric tests showed highly significant deficits in cirrhotic patients in comparison to controls(P < 0.001). There was a statistically significant improvement in test values in the patient group after LT; however, their values were still significantly worse than those of the controls(P < 0.001). The PHES detected MHE in 16 patients(80%) before LT with a median value of -7 ± 3.5. The median PHES value was significantly improved following LT, reaching-4.5 ± 5(P < 0.001), and the number of patients with MHE decreased to 11(55%). The pre-transplant model for end-stage liver disease(MELD) score ≥ 15 was significantly related to the presence of post-transplant MHE(P = 0.005). More patients in whom reversal of MHE was observed had a pre-transplant MELD score < 15.CONCLUSION Reversal of MHE in cirrhotic patients could be achieved by LT, especially in those with a MELD score < 15. | Mahmoud A Osman Moataz M Sayed Khaled A Mansour Shereen A Saleh Wesam A Ibrahim Sara M Abdelhakam Mohamed Bahaa Wael A Yousry Hosam S Elbaz Reginia N Mikhail Azza M Hassan Ehab H Elsayed Dalia A Mahmoud | 2016 | World Journal of Hepatology2016,8,30: | 11 |
| 8 | Post-endoscopic retrograde cholangiopancreatography pancreatitis: Risk factors and predictors of severity显示文摘AIM To detect risk factors for post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis(PEP) and investigate the predictors of its severity.METHODS This is a prospective cohort study of all patients who underwent ERCP.Pre-ERCP data,intraoperative data,and post-ERCP data were collected.RESULTS The study population consisted of 996 patients.Their mean age at presentation was 58.42(± 14.72) years,and there were 454 male and 442 female patients.Overall,PEP occurred in 102(10.2%) patients of the study population; eighty(78.4%) cases were of mild to moderate degree,while severe pancreatitis occurred in 22(21.6%) patients.No hospital mortality was reported for any of PEP patients during the study duration.Age less than 35 years(P = 0.001,OR = 0.035),narrower common bile duct(CBD) diameter(P = 0.0001) and increased number of pancreatic cannulations(P = 0.0001) were independent risk factors for the occurrence of PEP.CONCLUSION PEP is the most frequent and devastating complication after ERCP.Age less than 35 years,narrower median CBD diameter and increased number of pancreaticcannulations are independent risk factors for the occurrence of PEP.Patients with these risk factors are candidates for prophylactic and preventive measures against PEP. | Ayman El Nakeeb Ehab El Hanafy Tarek Salah Ehab Atef Hosam Hamed Ahmad M Sultan Emad Hamdy Mohamed Said Ahmed A El Geidie Tharwat Kandil Mohamed El Shobari Gamal El Ebidy | 2016 | World Journal of Gastrointestinal Endoscopy2016,8,19: | 10 |
| 9 | Efficacy of octreotide in the prevention of complications after pancreaticoduodenectomy in patients with soft pancreas and non-dilated pancreatic duct: A prospective randomized trial显示文摘Background: The efficacy of octreotide to prevent postoperative pancreatic fistula(POPF) of pancreaticoduodenectomy(PD) is still controversial. This study aimed to evaluate the effect of postoperative use of octreotide on the outcomes after PD.Methods: This is a prospective randomized controlled trial for postoperative use of octreotide in patients undergoing PD. Patients with soft pancreas and pancreatic duct < 3 mm were randomized to 2 groups.Group I did not receive postoperative octreotide. Group II received postoperative octreotide. The primary end of the study is to compare the rate of POPF.Results: A total of 104 patients were included in the study and were divided into two randomized groups.There were no significant difference in overall complications and its severity. POPF occurred in 11 patients(21.2%) in group I and 10(19.2%) in group II, without statistical significance(P = 0.807). Also, there was no significant differences between both groups regarding the incidence of biliary leakage(P = 0.083), delayed gastric emptying(P = 0.472), and early postoperative mortality(P = 0.727).Conclusions: Octreotide did not reduce postoperative morbidities, reoperation and mortality rate. Also, it did not affect the incidence of POPF and its clinically relevant variants. | Ayman El Nakeeb Ahmed El Gawalby Mahmoud A.Ali Ahmed Shehta Hosam Hamed Mohamed El Refea Ahmed Moneer Ahmed Abd El Rafee | 2018 | Hepatobiliary & Pancreatic Diseases International2018,17,1: | 7 |
| 10 | Novel 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 | 2019 | Defence Technology(防务技术)2019,15,3: | 6 |
| 11 | Biliary leakage following pancreaticoduodenectomy:Prevalence,risk factors and management显示文摘Background: Few studies investigated biliary leakage after pancreaticoduodenectomy(PD) especially when compared to postoperative pancreatic fistula(POPF). This study was to determine the incidence of biliary leakage after PD, predisposing factors of biliary leakage, and its management. Methods: We retrospectively studied all patients who underwent PD from January 2008 to December 2017 at Gastrointestinal Surgery Center, Mansoura University, Egypt. According to occurrence of postoperative biliary leakage, patients were divided into two groups. Group(1) included patients who developed biliary leakage and group(2) included patients without identified biliary leakage. The preoperative data, operative details, and postoperative morbidity and mortality were analyzed. Results: The study included 555 patients. Forty-four patients(7.9%) developed biliary leakage. Ten patients(1.8%) had concomitant POPF. Multivariate analysis identified obesity and time needed for hepaticojejunostomy reconstruction as independent risk factors of biliary leakage, and no history of preoperative endoscopic retrograde cholangiopancreatiography(ERCP) as protective factor. Biliary leakage from hepaticojejunostomy after PD leads to a significant increase in development of delayed gastric emptying, and wound infection. The median hospital stay and time to resume oral intake were significantly greater in the biliary leakage group. Non-surgical management was needed in 40 patients(90.9%). Only 4 patients(9.1%) required re-exploration due to biliary peritonitis and associated POPF. The mortality rate in the biliary leakage group was significantly higher than that of the non-biliary leakage group(6.8% vs 3.9%, P = 0.05). Conclusions: Obesity and time needed for hepaticojejunostomy reconstruction are independent risk factors of biliary leakage, and no history of preoperative ERCP is protective factor. Biliary leakage increases the risk of morbidity and mortality especially if concomitant with POPF. However, biliary leakage can be conservatively managed in majority of cases. | Ayman El Nakeeb Mohamed El Sorogy Hosam Hamed Rami Said Mohamad Elrefai Helmy Ezzat Waleed Askar Ahmed M Elsabbagh | 2019 | Hepatobiliary & Pancreatic Diseases International2019,18,1: | 4 |
| 12 | Chemical stability, thermal behavior, and shelf life assessment of extruded modified double-base propellants显示文摘Double base propellant suffers from lack of chemical stability; this could result in self ignition during storing. Modified double base(MDB) propellant based on stoichiometric binary mixture of oxidizermetal fuel(Ammonium perchlorate/Aluminum), and energetic nitramines(HMX) offered enhanced thrust as well as combustion characteristics. This study is devoted to evaluate the impact of such energetic additives on thermal behavior, chemical stability, and shelf life. Extruded MDB formulations were manufactured by extrusion process. Artificial aging at 80℃ for 28 days was conducted. Shelf life assessment was performed using Van't Hoff's equation. Quantification of evolved NOxgases with aging time was performed using quantitative stability tests. MDB formulation based on HMX demonstrated extended service life of 16 years compared with(AP/Al)-MDB which demonstrated 9 years. This finding was ascribed to the reactivity of AP with nitroglycerin with the formation of perchloric acid. Thermal behavior of aged MDB, exhibited an increase in heat released with time; this was ascribed to the autocatalytic thermal degradation during artificial aging. The increase in released heat by 31% was found to be equivalent to evolved NOx gases of 6.2 cm^3/5 g and 2.5 cm^3/1 g for Bergmann-Junk test, and Vacuum stability test respectively. This manuscript shaded the light on a novel approach to quantify evolved NOx gases to heat released with aging time. MDB based on HMX offered balanced ballistic performance,chemical stability, and service life. | Sherif Elbasuney Ahmed Fahd Hosam E.Mostafa Sherif F.Mostafa Ramy Sadek | 2018 | Defence Technology(防务技术)2018,14,1: | 4 |
| 13 | Efficacy and safety of botulinum toxin in treatment of anismus: A systematic review显示文摘AIM: To evaluate the efficacy and safety of botulinum toxin type A(BTX-A) in the management of patients with anismus. METHODS: An organized search of published literature was conducted using electronic databases including: Pub Med/MEDLINE, and Cochrane Central Register of Control ed Trials, also an internet-based search using 'Google Scholar' service was conducted. Both comparative and observational studies were included. We excluded irrelevant articles, editorials, case reports, reviews, and meta-analyses. The studies that followed the patients less than 6 mo were excluded. Variables collected were demographic data of the patients, technique of BTX-A injection and number of sessions, short-term and longterm clinical improvement, post-injection changes in electromyography(EMG), defecography, manometry, and balloon expulsion test, and complications recorded after BTX-A injection.RESULTS: Seven studies comprising 189 patients were included in the review. The median age of the patients was 41.2 years and female-to-male ratio was 1.3:1. The median dose of BTX-A injected per procedure was 100 IU(range, 20-100 IU). Lateral injection was done in five trails and combined lateral and posterior injections in two trials. Three studies used endorectal ultrasonographyguided technique, one study used EMG-guided technique,whereas the remaining three studies used manual palpation with the index finger. The median percentage of patients who reported initial improvement of symptoms was 77.4%(range 37.5%-86.7%), this percentage declined to a median of 46%(range 25%-100%) at 4 mo after injection of BTX-A. Rates of improvement evaluated by balloon expulsion test, EMG, and defecography ranged between(37.5%-80%),(54%-86.7%), and(25%-86.6%), respectively. Fourteen(7.4%) patients developed complications after injection of BTX-A. Complication rates across the studies ranged from 0% to 22.6%. CONCLUSION: Initial satisfactory improvement of symptoms after BTX-A injection remarkably deteriorated after 3 mo of the procedure. However, repeated injection may provide better sustained results with no additional morbidities. Further analysis of more patients is necessary to conclude the safety of BTX-A for the treatment of anismus. | Sameh Hany Emile Hossam Ayman Elfeki Hosam Ghazy Elbanna Mohamed Youssef Waleed Thabet Tito M Abd El-Hamed Basem Said Ahmed Lotfy | 2016 | World Journal of Gastrointestinal Pharmacology and Therapeutics2016,7,3: | 3 |
| 14 | Fall of platelet count in children with traumatic brain injury: is it of value?显示文摘ObjectiveTrauma 在在沙特阿拉伯的年轻年龄组之中是死亡和病态的领先的原因并且开发国家。这研究试图为临床的严厉作为一个潜在的预言者与创伤的大脑损害( TBI )在孩子评估血小板计数的秋天, outcome.MethodsTotally ,有 TBI 的 74 个病人从开始2008年1月到目的进入我们的医院的小儿科的特别护理单位( PICU )2010年3月( 27 个月)。基线注册标准是很长时间 12 年,在在损伤事件以后的 4 个小时以内的承认,和缩短的损害规模(AIS )( 或) , 3.1;相对风险(RR ) , 2.15。接收装置操作特征(巨鸟) 曲线和 Youden 索引证明 PFP 的最佳截止点在 51.5%.ConclusionPFP 与 TBI 的严厉被增加,它能也为它的结果作为一个重要独立预言因素被拿。 | Hosam Mustafa Kamal Habeeb Sammou Ahmad Adnan Mardini Ahmad Zaitoni | 2011 | Chinese Journal of Traumatology2011,14,6: | 3 |
| 15 | Small for size syndrome difficult dilemma: Lessons from 10 years single centre experience in living donor liver transplantation显示文摘AIM To analyze the incidence, risk factors, prevention, treatment and outcome of small for size syndrome(SFSS) after living donor liver transplantation(LDLT). METHODS Through-out more than 10 years: During the period from April 2003 to the end of 2013, 174 adult-to-adults LDLT(A-ALDLT) had been performed at National Liver Institute, Menoufiya University, Shibin Elkoom, Egypt. We collected the data of those patients to do this cohort study that is a single-institution retrospective analysis of a prospectively collected database analyzing the incidence, risk factors, prevention, treatment and outcome of SFSS in a period started from the end of 2013 to the end of 2015. The median period of follow-up reached 40.50 m, range(0-144 m). RESULTS SFSS was diagnosed in 20(11.5%) of our recipients. While extra-small graft [small for size graft(SFSG)], portal hypertension, steatosis and left lobe graft were significant predictors of SFSS in univariate analysis(P = 0.00, 0.04, 0.03, and 0.00 respectively); graft size was the only independent predictor of SFSS on multivariate analysis(P = 0.03). On the other hand, there was lower incidence of SFSS in patients with SFSG who underwent splenectomy [4/10(40%) SFSS vs 3/7(42.9%) no SFSS] but without statistical significance, However, there was none significant lower incidence of the syndrome in patients with right lobe(RL) graft when drainage of the right anterior and/or posterior liver sectors by middle hepatic vein, V5, V8, and/or right inferior vein was done [4/10(28.6%) SFSS vs 52/152(34.2%) no SFSS]. The 6-mo, 1-, 3-, 5-, 7-and 10-year survival in patients with SFSS were 30%, 30%, 25%, 25%, 25% and 25% respectively, while, the 6-mo, 1-, 3-, 5-, 7-and 10-year survival in patients without SFSS were 70.1%, 65.6%, 61.7%, 61%, 59.7%, and 59.7% respectively, with statistical significant difference(P = 0.00). CONCLUSION SFSG is the independent and main factor for occurrence of SFSS after A-ALDLT leading to poor outcome. However, the management of this catastrophe depends upon its prevention(i.e., selecting graft with proper size, splenectomy to decrease portal venous inflow, and improving hepatic vein outflow by reconstructing large draining veins of the graft). | Hany Shoreem Emad Hamdy Gad Hosam Soliman Osama Hegazy Sherif Saleh Hazem Zakaria Eslam Ayoub Yasmin Kamel Kalid Abouelella Tarek Ibrahim Ibrahim Marawan | 2017 | World Journal of Hepatology2017,9,21: | 3 |
| 16 | Synthesis and surface modification of nanophosphorous-based flame retardant agent by continuous flow hydrothermal synthesis显示文摘Nanoparticles can provide flame retardance to hosting polymers and act as nano fire extinguishers.Hydroxyapatite(Ca_5(OH)(PO_4)_3)(HA) is not hygroscopic,and is thermally stable up to 800 ℃,with18.5 wt%phosphorous content.It is this high phosphorous content that can provide HA with flame retardant properties.In this paper,we report on the continuous synthesis of ultrafine HA using a hydrothermal synthesis technique.The HA surface properties were changed from hydrophilic to hydrophobic by postsynthesis surface modification.The ratio of the HA nanoparticles and an intumescent agent known as Exolit AP750 was investigated to yield a self-extinguishing multi-component epoxy nanocomposite for extended application under extreme fire conditions.The HA/AP750/epoxy nanocomposite was able to resist a flame at 1700 ℃ and self-extinguish after the flame had been removed.The nanocomposite showed an enhanced flammability performance in standard cone calorimetry testing and formed a compact and cohesive protective char layer with a 50%decrease in peak heat released compared with virgin epoxy.Our aim was to establish the use of HA as an effective nanofiller with phosphorous-based flame retardant properties.The surface of this nano fire extinguisher was modified effectively with different surfactants for enhanced compatibility with different polymeric matrices. | Sherif Elbasuney Hosam E.Mostafa | 2015 | Particuology2015,13,5: | 2 |
| 17 | Multi-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 | 2015 | Defence Technology(防务技术)2015,11,4: | 2 |
| 18 | Amniotic Membrane Transplantation in Trabeculectomy With Mitomycin C for Refractory Glaucoma显示文摘 | Hosam Sheha Ahmad Kheirkhah Hamid Taha | 2008 | Journal of Glaucoma2008,,4: | 2 |
| 19 | Ultrasound criteria for severe in-stent restenosis following carotid artery stenting显示文摘 | Wei Zhou Deborah D. Felkai Mark Evans Sally A. McCoy Peter H. Lin Panagiotos Kougias Hosam F. El-Sayed Alan B. Lumsden | 2008 | Journal of Vascular Surgery2008,,1: | 1 |
| 20 | Comparison of supervisory control strategies for series plug-in hybrid electric vehicle powerstrains through dynamic pro- gramming显示文摘 | Rakesh M P Zoran F Hosam K F | 2014 | IEEE Transactions on Control Systems Technology2014,22,2: | 1 |