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Coastal wetland vegetation features and digital Change Detection Mapping based on remotely sensed imagery:el-Burullus Lake, Egypt

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International Soil and Water Conservation Research 2020年第1期8卷 66-79页

作者： Asmaa Nasser mohamed Eid C.O.Olatubara T.A.Ewemoje Haitham Farouk mohamed talaat el-hennawy Department of Environmental Management The Pan African University for Earth and Life Sciences Including Health and AgricultureUniversity of IbadanIbadanNigeria Department of Computer Science Faculty of Computers and InformationSuez UniversitySuezEgypt Nature Conservation Sector of the Ministry of Environment Egypt

el-Burullus Lake is one of the four Egyptian Ramsar sites that constitute internationally important wetlands as they contain a rich biodiversity and have a large number of water bird *** the valuable resources in el-Burullus Lake and its surrounding area have faced various threats to wetlands over recent *** study was carried out to evaluate the dynamics of land cover change using three change scenes of recent and past satellite data from 1990 to *** study utilized ArcGIS10.7,ERDAS Imagine 14,Landsat TM(1990,1999,and 2010),Landsat OLI-TIRS(2019)to analyze the land-use/land-cover(LULC)of el-Burullus *** Difference Vegetation Index(NDVI)and Normal-ized Difference Water Index(NDWI)were employed to assess the change scenario of the *** indicated that vegetated land has increased significantly with a concomitant shrinkage in the water body and open soil during the study *** 53 km^2(7.0%)of water body and 8.7 km^2(1.3%)of open soil were lost,while vegetation areas expanded to approximately 29.9 km^2(7.4%).Factors that underpin the observed changes in the area are;reclamation projects and fish-farms which are creating the danger of drying up of the southern coastal parts of the lake,as well as spreading of reed beds(mainly:Phragmites australis)that covers about 20%of el-Burullus lake which led to dry up the lake ***,the study suggests the need for urgent attention on conservation of remaining wetland resources for sustainable utilization for the next generation.

关键词： el-burullus natural wetlands LULC NDVI NDWI Remote sensing Vegetation indices

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Serum ferritin in neonatal cholestasis: A specific and active molecule or a non-specific bystander marker?

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Hepatobiliary & Pancreatic Diseases International 2019年第2期18卷 173-180页

作者： Behairy el-Sayed Behairy Hatem Abd-Alsattar Konswa Hanaa talaat Ahmed Dina Shehata el-Azab Nermin mohamed Adawy Ahmad mohamed Sira Department of Pediatric Hepatology Gastroenterology and Nutrition National Liver Institute Menofiya University Department of Pathology National Liver Institute Menofiya University

Background: Serum ferritin(SF) and consequently hepatic iron have long been considered important in liver fibrosis progression. They have been studied in different liver diseases with no previous reports in neonatal cholestasis(NC). This study aimed to measure SF in different etiologies of NC and investigate its relation to hepatic iron and fibrosis. Methods: SF was measured in 75 infants, including 50 with NC and 25 with sepsis. SF was compared between these two groups. Biochemical parameters, hepatic iron grades, and liver fibrosis and other histopathological characteristics and correlated with SF were assessed in NC group. Finally, a comparison between intrahepatic cholestasis and obstructive etiology was performed. Results: SF was elevated in NC(1598 ± 2405 ng/mL) with no significant difference from those with sepsis( P = 0.445). NC and sepsis constituted augmenting factors leading to more elevation of SF(2589 ± 3511 ng/mL). SF was significantly correlated with hepatic iron grades( r = 0.536, P ell transformation( P = 0.009) and hepatocyte swelling( P = 0.023) than those with obstructive etiology(672 ± 566 ng/mL) and their prevalent pathological findings of ductular proliferation( P = 0.003) and bile plugs( P = 0.002). SF was unrelated to the grade of liver fibrosis( P = 0.058). Conclusions: SF is non-specifically elevated in NC, with positive correlation to hepatic iron grades. SF ≥ 803.5 ng/mL can predict higher grades( ≥ grade 3) of hepatic iron. However, an active role of increased SF and hepatic iron in disease progression remains questionable.

关键词： Biliary atresia Liver fibrosis Hepatic iron grade Intrahepatic cholestasis Iron

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Impact of cirrhosis on surgical outcome after pancreaticoduodenectomy

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World Journal of Gastroenterology 2013年第41期19卷 7129-7137页

作者： Ayman el Nakeeb Ahmad M Sultan Tarek Salah mohamed el Hemaly Emad Hamdy Ali Salem Ahmed Moneer Rami Said Ahmed Abueleneen Mostafa Abu Zeid talaat Abdallah mohamed Abdel Wahab Gastroenterology surgical center Mansoura UniversityMansoura 35516Egypt

AIM:To elucidate surgical outcomes of pancreaticoduodenectomy(PD)in patients with liver ***:We studied retrospectively all patients who underwent PD in our centre between January 2002and December *** A comprised patients with cirrhotic livers,and Group B comprised patients with non-cirrhotic *** cirrhotic patients had ChildPugh classes A and B(patient’s score less than 8).Preoperative demographic data,intra-operative data and postoperative details were *** primary outcome measure was hospital mortality *** outcomes analysed included duration of the operation,postoperative hospital stay,postoperative morbidity and survival ***:Only 67/442 patients(15.2%)had cirrhotic *** blood loss and blood transfusion were significantly higher in group A(P=0.0001).The mean surgical time in group A was significantly longer than that in group B(P=0.0001).Wound complications(P=0.02),internal haemorrhage(P=0.05),pancreatic fistula(P=0.02)and hospital mortality(P=0.0001)were significantly higher in the cirrhotic *** stay was significantly longer in group A(P=0.03).The median survival was 19 mo in group A and 24 mo in group *** hypertension(PHT)was present in 16/67 cases of cirrhosis(23.9%).The intraoperative blood loss and blood transfusion were significantly higher in patients with PHT(P=0.001).Postoperative morbidity(0.07)and hospital mortality(P=0.007)were higher in cirrhotic patients with ***:Patients with periampullary tumours and well-compensated chronic liver disease should be routinely considered for PD at high volume centres with available expertise to manage liver *** is associated with an increased risk of postoperative morbidity in patients with liver cirrhosis;therefore,it is only recommended in patients with Child A cirrhosis without portal hypertension.

关键词： Periampullary tumour Liver cirrhosis Portal hypertension Pancreaticoduodenectomy

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Trends and outcomes of pancreaticoduodenectomy for periampullary tumors: A 25-year single-center study of 1000 consecutive cases

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World Journal of Gastroenterology 2017年第38期23卷 7025-7036页

作者： ayman el nakeeb waleed askar ehab atef ehab el hanafy ahmad m sultan tarek salah ahmed shehta mohamed el sorogy emad hamdy mohamed el hemly ahmed a el-geidi tharwat kandil mohamed el shobari talaat abd allah amgad fouad mostafa abu zeid ahmed abu el eneen nabil gad el-hak gamal el ebidy omar fathy ahmed sultan mohamed abdel wahab gastroenterology surgical center mansoura university

AIM To evaluate the evolution, trends in surgical approaches a n d r e c o n s t r u c t i o n t e c h n i q u e s, a n d i m p o r t a n t lessons learned from performing 1000 consecutive pancreaticoduodenectomies(PDs) for periampullary *** This is a retrospective review of the data of all patients who underwent PD for periampullary tumor during the period from January 1993 to April 2017. The data were categorized into three periods, including early period(1993-2002), middle period(2003-2012), and late period(2013-2017).RESULTS The frequency showed PD was increasingly performed after the year 2000. With time, elderly, cirrhotic and obese patients, as well as patients with uncinate process carcinoma and borderline tumor were increasingly selected for PD. The median operative time and postoperative hospital stay decreased significantly over the periods. Hospital mortality declined significantly, from 6.6% to 3.1%. Postoperative complications significantly decreased, from 40% to 27.9%. There was significant decrease in postoperative pancreatic fistula in the second 10 years, from 15% to 12.7%. There was a significant improvement in median survival and overall survival among the *** Surgical results of PD significantly improved, with mortality rate nearly reaching 3%. Pancreatic reconstruction following PD is still debatable. The survival rate was also improved but the rate of recurrence is still high, at 36.9%.

关键词： Pancreaticoduodenectomy Pancreaticogastrostomy Pancreaticojejunostomy Postoperative pancreatic fistula Periampullary tumor

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Outcomes of curative liver resection for hepatocellular carcinoma in patients with cirrhosis

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World Journal of Gastrointestinal Oncology 2021年第5期13卷 424-439页

作者： Omar elshaarawy Aya Aman Hazem mohamed Zakaria talaat Zakareya Asmaa Gomaa Esam elshimi Eman Abdelsameea Department of Hepatology Gastroenterology and Liver TransplantationNational Liver InstituteMenoufia UniversityShebine Elkom 32511MenoufiaEgypt Department of Hepatobiliary Pancreatic Surgery National Liver InstituteMenoufia UniversityShebine Elkom 32511MenoufiaEgypt

BACKGROUND Given the poor synthetic function of cirrhotic liver,successful resection for patients with hepatocellular carcinoma(HCC)necessitates the ability to achieve resections with tumor free *** To validate post hepatectomy liver failure score(PHLF),compare it to other established systems and to stratify risks in patients with cirrhosis who underwent curative liver resection for *** Between December 2010 and January 2017,120 patients underwent curative resection for HCC in patients with cirrhosis were included,the pre-operative,operative and post-operative factors were recorded to stratify patients'risks of decompensation,survival,and *** The preoperative model for end-stage liver disease(MelD)score[odds ratio(OR)=2.7,95%CI:1.2-5.7,P=0.013],tumor diameter(OR=5.4,95%CI:2-14.8,P=0.001)and duration of hospital stay(OR=2.5,95%CI:1.5-4.2,P=0.001)were significant independent predictors of hepatic decompensation after *** the preoperative MelD score[hazard ratio(HR)=1.37,95%CI:1.16-1.62,PelD score and tumor diameter can independently predict hepatic ***,preoperative MelD score,different grades of PHLF and HCC recurrence can precisely predict survival.

关键词： Cirrhosis Liver Resection Scores Hepatocellular carcinoma

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Cartilage tympanoplasty in the treatment of adhesive otitis media with and without Eustachian tube balloon dilatation

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Journal of Otology 2022年第4期17卷 226-231页

作者： Ahmed abdel rahman abdel aziz Ahmed Mahmoud Youssef Mostafa mohamed Mostafa Mostafa talaat Khaled mohamed Abdelzaher Ahmed Adel Sadeq Department of Otorhinolaryngology Faculty of MedicineEl MiniaEgypt Radiology Department Faculty of MedicineEl MiniaEgypt

Purpose:To compare cartilage tympanoplasty(CT)combined with eustachian tube balloon dilatation(ETBD)and cartilage tympanoplasty alone as a surgical treatment modality for adhesive otitis media(AdOM)in terms of graft healing,audiological outcomes,and impact on life style,using Chronic Otitis Media Outcome Test 15(COMOT-15).Methods:50 patients with AdOM were randomly classified into 2 groups:25 patients for cartilage tympanoplasty only(CT group)and 25 patients for cartilage tympanoplasty combined with eustachian tube balloon dilatation(CT t ETBD group).Clinical outcomes in both groups were compared at 3 and 6 months of follow ***:There was no significant difference in graft healing between the two *** COMOT-15 scores significantly decreased in both groups with a significant difference between the groups with regard to the decrease in COMOT-15 scores at 3 and 6 months of follow-up(P<0.05).Hearing improvement was achieved,as the mean preoperative ABG was 26.5±5.4 and 27.1±4.6 dB,and the mean postoperative ABG at 6 months was 19.4±4.4 and 14.6±3.9 dB in the CT and the CT t ETBD groups,*** difference in the magnitude of ABG reduction in the two groups was significant at 3 and 6 months of postoperative follow-up(P<0.05)in favour of the CT t ETBD ***:ETBD can increase the success rate of cartilage tympanoplasty in patients with AdOM by enhancing the audiological outcome and quality of life.

关键词： balloon healing otitis

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World Journal of Gastroenterology 2016年第30期22卷 6800-6816页

作者： Mahmoud Fathy Dondeti Eman Anwar el-Maadawy Roba mohamed talaat Genetic Engineering and Biotechnology Research Division National Research Centre Molecular Biology Department Genetic Engineering and Biotechnology Research Institute University of Sadat City

Hepatocellular carcinoma(HCC) is a primary liver cancer, which is one of the most prevalent cancers among humans. Many factors are involved in the liver carcinogenesis as lifestyle and environmental factors. Hepatitis virus infections are now recognized as the chief etiology of HCC; however, the precise mechanism is still enigmatic till now. The inflammation triggered by the cytokine-mediated immune response, was reported to be the closest factor of HCC development. Cytokines are immunoregulatory proteins produced by immune cells, functioning as orchestrators of the immune response. Genes of cytokines and their receptors are known to be polymorphic, which give rise to variations in their genes. These variations have a great impact on the expression levels of the secreted cytokines. Therefore, cytokine gene polymorphisms are involved in the molecular mechanisms of several diseases. This piece of work aims to shed much light on the role of cytokine gene polymorphisms as genetic host factor in hepatitis related HCC.

关键词： Hepatocellular carcinoma Hepatitis C virus Hepatitis B virus Cytokines Polymorphism

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Spatial distribution of heavy metals in the middle nile delta of Egypt

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International Soil and Water Conservation Research 2016年第4期4卷 293-303页

作者： mohamed S.Shokr Ahmed A.el Baroudy Michael A.Fullen talaat R.el-beshbeshy Ali R.Ramadan A.Abd el Halim Antonio J.T.Guerra Maria C.O.Jorge Soils and Water Department Faculty of AgricultureTanta UniversityTantaEgypt The University of Wolverhampton Wolverhampton WV11LYUK Soils and Water Use Department National Research CentreGizaEgypt Department of Geography Federal University of Rio de JaneiroBrazil

Heavy metal contamination in the el-Gharbia Governorate(District)of Egypt was identified by using remote sensing,Geographical Information Systems(GIS),and X-ray fluorescence(XRF)spectrometry as the main research *** elevation Model(DEM),Landsat 8 and contour map images were used to map the *** physiographic units in the study area are represented by nine soil profiles.X-ray fluorescence spectrometry(XRF)was used for geochemical analysis of 33 soil ***(V),nickel(Ni),chromium(Cr),copper(Cu)and zinc(Zn)concentrations were measured and they all exceeded the average global concentrations identified by Wedepohl(1995).Ni and Cr concentrations exceeded recommended values in all soil profile horizons(Canadian Soil Quality Guidelines,2007),while Cu had a variable *** concentrations are under recommended concentration limits in most soil *** Factor,Pollution Load Index and Degree of Contamination indices were used to assess the environmental risks of heavy metal contamination from the *** analysed metals pose some potential hazard and pollution levels were particularly high near industrial and urban areas.

关键词： el-Gharbia Governorate Egypt Soil contamination X-ray fluorescence spectrometry Remote sensing Geographical information systems Indices calculations

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A New Approach for Converting Renewable Energy to Stable Energy

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Engineering（科研） 2013年第10期5卷 27-33页

作者： mohamed talaat Reda Edris Naglaa Ibrahim Fatma Omar mohamed Ibrahim electrical and Computer Engineering Higher Technological Institute 10th of Ramadan City Egypt electrical Power and Machines Faculty of Engineering Zagazig University Zagazig Egypt

A renewable energy plant which relies on wind speed or solar insolation is unreliable because of the stochastic nature of weather patterns. It is theorized that by using multiple renewable energy plants in separate areas of a region, the different weather conditions might approach a probabilistically independent relationship. The goal of this paper is to utilize the power system technology to help disseminate wind and solar power systems to get a stable energy. A new approach to get appropriate stable energy is achieved by using the interrupted energy that obtained from wind farm and solar insolation. This is achieved by lifting water to a higher level with appropriate pumps and storing it in the form of potential energy. Then a stable energy is obtained by reliving water to the lower level. In this paper, the efficiency obtained from the renewable energy is compared with that obtained from traditional ones. An experimental model to simulate the process of converting the renewable energy to a stable energy is presented. The obtained results from experimental model explained that the renewable energy can be converted to a stable one with high efficiency.

关键词： Renewable Energy Stable Energy Energy Stored Wind Farm Solar Energy Application of Renewable Energy

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Response of Alfalfa under Salt Stress to the Application of Potassium Sulfate Nanoparticles

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American Journal of Plant Sciences 2017年第8期8卷 1751-1773页

作者： Mahmoud Samir el-Sharkawy talaat Rizk el-Beshsbeshy Esawy Kasem Mahmoud Nasser Ibrahim Abdelkader Rania mohamed Al-Shal Ali M. Missaoui Soil Science and Water Department Faculty of Agriculture Tanta University Tanta Egypt Department of Crop and Soil Sciences and Institute of Plant Breeding Genetics and Genomics University of Georgia Athens GA USA

A greenhouse study was conducted to explore the effect of various rates of potassium sulfate (K2SO4) nanoparticles on alfalfa (Medicago sativa L.) growth and physiological response under salt stress. One salt-tolerant genotype (Mesa-Sirsa) and one salt-sensitive genotype (Bulldog 505) were selected based on germination under salt and were planted in pots containing 2 kg of sand. The two genotypes were subjected to 0 and 6 dS·m-1 salt levels using CaCl2·2H2O: NaCl (2:1) mixed with Hoagland solution. Three K2SO4 nanoparticle treatments consisting of, 1/4, 1/8, and 1/10 of the potassium (K) level in full strength Hoagland solution (235 mg·L-1) were applied. Adding K2SO4 nanoparticles at the 1/8 level resulted in the highest shoot dry weight, relative yield, root length and root dry weight in both genotypes. The different rates of K2SO4 nanoparticles affected significantly Na/K ratio and the concentrations of Calcium (Ca), Phosphorus (P), Copper (Cu), Manganese (Mn), and Zinc (Zn) in plant tissue. The application of K2SO4 nanoparticles at the 1/8 rate enhanced the plant’s physiological response to salt stress by reducing electrolyte leakage, increasing catalase and proline content, and increasing antioxidant enzymes, activity. These results suggest that the application of K nanoparticles may have better efficiency than conventional K fertilizers in providing adequate plant nutrition and overcoming the negative effects of salt stress in alfalfa.

关键词： Alfalfa Nanoparticles Salt Stress Potassium

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