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Influence of host age and host deprivation on longevity, egg load dynamics and oviposition rate in Microplitis rufiventris

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Insect Science 2007年第6期14卷 485-495页

作者： esmat mohamed HEGAZI GEHAN mohamed ABD EL-AZIZ AHMED YOUSEF EL-SHAZLY WEDAD EMAM KHAFAG Department of Entomology Faculty of Agriculture University of Alexandria Plant Protection Research Institute Sabahia Alexandria Egypt

Adult size, longevity, egg load dynamics and oviposition ofMicroplitis rufiventris Kok. which began their development in the first, second, third （preferred hosts） or fourth （non-preferred hosts） instar larvae of Spodoptera littoralis （Boisd.） were studied. The parasitoid size was largely determined by the initial host size at parasitism. Non-ovipositing females derived from older hosts lived for longer periods than those derived from younger ones. However, the ovipositing females, irrespective of their size, lived for almost the same periods. At emergence, the oviducts of adult females contain a significant amount of mature eggs available for oviposition for a few hours on eclosion day. Egg load increases during the early phase of adult life. The amount of additional mature eggs and rate of egg maturation per hour was greater for wasps derived from preferred hosts compared with those in females derived from non-preferred hosts. The pattern of egg production in M. rufiventris females depended on the availability of hosts for parasitization. Host-deprived females depleted the egg complement with aging; the longer the host deprivation, the lower the oviduct egg load. Marked reduction in both realized or potential fecundity of host-deprived females was observed following host availability. Host privation for more than 3 days induced a marked deficit fecundity pattern through the female＇ s life. The realized fecundity was determined by the interaction among host availability, the number of eggs that are matured over the female＇ s life span, oviposition rate and host size from which the female was derived. These results suggest that：（i） M. rufiventris wasp is a weak synovigenic species; （ii） the maturation of additional eggs is inhibited once the maximum oviduct egg load is reached; （iii） the egg load of the newly emerged female is significantly less than the realized fecundity; and （iv） because M. rufiventris females oviposit fewer eggs when they begin depleting their

关键词： aging egg production host privation longevity Microplitis rufiventris,oviposition Spodoptera littoralis wasp size

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Vascular endothelial growth factor before and after locoregional treatment and its relation to treatment response in hepatocelluar carcinoma patients

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Asian Pacific Journal of Tropical Biomedicine 2015年第12期5卷 1005-1009页

作者： Heba Sedrak Noaman El-Garem Mervat Naguib Heba El-Zawahry mohamed esmat Lila Rashed Department of Internal Medicine Faculty of Medicine Cairo University Department of Medical Oncology National Cancer Institute Cairo University Department of Medical Biochemistry Faculty of Medicine Cairo University

Objective:To evaluate vascular endothelial growth factor(VEGF)levels in hepatocellular carcinoma patients before and after transcatheter arterial chemoembolization(TACE)and percutaneous ethanol injection(PEI)and its relation to treatment ***:A total of 40 patients with unrespectable hepatocelluar carcinoma were assessed *** patients were suitable to be treated by TACE,while other 20patients were treated with *** VEGF levels were measured before and 1 month after each procedure by *** was assessed after 1 month according to Union Internationale Contre le Cancer evaluation criteria based on change in tumor size as measured by ***:There was no significant difference between TACE and PEI groups with regard to age,sex,tumor size,response to local therapy,or VEGF and alpha-fetoprotein before and after *** levels after TACE were significantly higher than before TACE[(298.1±123.6)pg/m L vs.(205.8±307.3)pg/m L;P=0.001].Also,VEGF levels were significantly higher after PEI than before PEI[(333.8±365.6)pg/m L vs.(245.3±301.8)pg/m L;P=0.000].Non-responders of both groups had significantly high VEGF levels than responder's,both before[(985.0±113.2)pg/m L vs.(117.1±75.3)pg/m L;P<0.001]and after therapy[(1 330.6±495.7)pg/m L vs.(171.0±94.7)pg/m L;P=0.000)].Conclusions:Both TACE and PEI were associated with an increase in serum VEGF in hepatocelluar carcinoma *** levels of VEGF before and after therapy were found in non-responders,suggesting that VEGF is a useful marker in predicting treatment response.

关键词： Hepatocelluar carcinoma Vascular endothelial growt

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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

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Buffalo stirred yoghurt fortified with grape seed extract:New insights into its functional properties

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Food Bioscience 2022年第3期47卷 1330-1336页

作者： Suzan H.Tami esmat Aly Aliaa A.Darwish esmat S.mohamed Department of Clinical Nutrition College of Applied Medical SciencesKing Faisal UniversitySaudi Arabia Dairy Research Department Food Technology Research InstituteAgricultural Research Center12613GizaEgypt Biotechnology Department Higher Institute for Agriculture Co-Operation13766ShobraCairoEgypt

Grape seed extract(GSE)is considered one of the major byproducts,which are rich in phenolic content and possess several health-promoting activities including antibacterial,anticancer,and *** current research was devoted to improve the bioactive properties of stirred yoghurt through supplementation with GSE at three concentrations(0.1,0.25,and 0.5 g/100 g yoghurt).The obtained stirred yoghurts were analyzed for determining their composition,pH,syneresis,viscosity,and sensory ***,some functional properties including antioxidant,antibacterial,anticancer activities were *** increments(p≤0.05)were observed in total solids,ash contents,pH,water holding capacity,and viscosity values,especially when 0.5%GSE was ***,adding 0.5%GSE showed higher(p≤0.05)in vitro antioxidant,antibacterial,and anticancer ***,the improved bioactive properties resulting from adding GSE,even at the higher concentration,were not accompanied by any change in sensory *** particular,the color descriptor was mostly preferred by panelists when 0.5%GSE was *** assessors did not observe any off-flavors in any of the tested stirred yoghurt ***,the functional properties of stirred yoghurt could be improved by adding GSE preparation without affecting its organoleptic properties.

关键词： Stirred yoghurt Grape seed extract Bioactive properties Antibacterial and anticancer activities Antioxidant

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Epidemiological and clinical characteristics of inflammatory bowel diseases in Cairo,Egypt

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World Journal of Gastroenterology 2014年第3期20卷 814-821页

作者： Serag esmat mohamed El Nady mohamed Elfekki Yehia Elsherif Mazen Naga Division of Gastroenterology Department of Internal MedicineFaculty of MedicineCairo University Department of Internal Medicine Faculty of MedicineBeni Suef University Department of Tropical Medicine Faculty of MedicineCairo University

AIM: To study the natural history, patterns and clinical characteristics of inflammatory bowel diseases (IBD) in Egypt.

关键词： Natural history of Inflammatory bowel diseases, Epidemiology of Ulcerative colitis, Epidemiology of Crohn’ s disease, Epidemiology of inflammatory bowel diseases in Egypt, inflammatory bowel diseases Prevalence, Incidence of ulcerative colitis, Incidence of Crohn’ s disease

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Noninvasive assessment of hepatic fibrosis in Egyptian patients with chronic hepatitis C virus infection

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World Journal of Gastroenterology 2012年第23期18卷 2988-2994页

作者： Shawky Abdelhamid Fouad Serag esmat Dalia Omran Laila Rashid mohamed H Kobaisi Department of Internal Medicine Faculty of Medicine Cairo University Cairo 11562 Egypt Department of Tropical Medicine Faculty of Medicine Cairo University Cairo 11562 Egypt Department of Biochemistry Faculty of Medicine Cairo University Cairo 11562 Egypt Department of Pathology National Institute of Nephrology Cairo 35789 Egypt

AIM: To evaluate the accuracy of specific biochemical markers for the assessment of hepatic fibrosis in patients with chronic hepatitis C virus (HCV) infection. METHODS: One hundred and fifty-four patients with chronic HCV infection were included in this study; 124 patients were non-cirrhotic, and 30 were cirrhotic. The following measurements were obtained in all patients: serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), albumin, total bilirubin, prothrombin time and concentration, complete blood count, hepatitis B surface antigen (HBsAg), HCVAb, HCV-RNA by quantitative polymerase chain reaction, abdominal ultrasound and ultrasonic-guided liver biopsy. The following ratios, scores and indices were calculated and compared with the results of the histopathological examination: AST/ALT ratio (AAR), age platelet index (API), AST to platelet ratio index (APRI), cirrhosis discriminating score (CDS), Pohl score, G teborg University Cirrhosis Index (GUCI). RESULTS: AAR, APRI, API and GUCI demonstrated good diagnostic accuracy of liver cirrhosis (80.5%, 79.2%, 76.6% and 80.5%, respectively); P values were: 0.05). In addition, we found significant correlations for the AAR, APRI, API, GUCI and Pohl score between the non-cirrhotic (F0, F1, F2, F3) and cirrhotic (F4) groups (P values: 0.05). CONCLUSION: The use of AAR, APRI, API, GUCI and Pohl score measurements may decrease the need

关键词： Age platelet index Aspartate aminotrans-ferase platelet ratio index Aspartate aminotransferase-to-alanine aminotransferase ratio Cirrhosis discrimi-nating score Fibrosis evaluation G^teborg UniversityCirrhosis Index Hepatitis C virus infection Liver fibro-sis Pohl score

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Management of Hepatocellular Carcinoma: Updated Review

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Journal of Cancer Therapy 2013年第2期4卷 536-545页

作者： Tamer Elbaz mohamed El Kassas Gamal esmat Endemic Medicine and Hepatogastroenterology Department Faculty of Medicine Cairo University Cairo Egypt Hepatology Department National Hepatology and Tropical Medicine Research Institute Cairo Egypt.

Hepatocellular carcinoma (HCC) represents one of the most challenging potentially curable tumors with high incidence, prevalence and mortality rates. For proper assessment, prognosis estimation and treatment decisions, at least seven important guidelines and staging systems were designated. Proper treatment needs the interaction of multidisciplinary HCC clinic to choose the most appropriate line of treatment. The different modalities of management include resection (surgery or transplantation), local ablation, chemoembolization, radioembolization and molecular targeted therapies with a wide range of investigational drugs that developed after the FDA approved sorafenib. Downstaging and bridging are two important strategies to manage HCC patients who will undergo liver transplantation to improve their postoperative survival. Finally, survival and prognosis depends on several prognostic factors that are either patient related or tumor related. In our study, we aim to provide an updated comprehensive review of the different aspects of liver cancer management starting from staging systems to the different applied treatment modalities.

关键词： Hepatocellular Carcinoma Staging Molecular Targeted Therapies

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Use of ultrasonic transient elastography (Fibroscan) in the assessment of hepatic focal lesion stiffness

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Open Journal of Gastroenterology 2013年第2期3卷 107-112页

作者： mohamed Yousef Aisha Elsharkawy Mohammad El Beshlawy Gamal esmat Zakaria Salama Department of Endemic Medicine and Hepatology Faculty of Medicine Cairo University Cairo Egypt

Background and Aim: Hepatic focal lesions differ in their tissue composition and in the degree of stiffness, so our aim was to evaluate the role of Ultrasonic Transient Elastography (Fibroscan) in the measurement of hepatic focal lesions stiffness in order to differentiate hepatocellular carcinoma (HCC) focal lesions from other non HCC focal lesions. Methods: The study was conducted on 34 patients with hepatic focal lesion(s) in the right lobe located near the liver surface and more than or equal4 cmin diameter, detected by imaging studies and diagnosed by CT and histopathology. Stiffness over the focal lesions was measured by the fibroscan. Results: The median value of stiffness was 72.5 kPa over HCC focal lesions, 17.2 kPa over lymphoma focal lesions, 6.5 kPa over metastatic focal lesions and 10.5 kPa over the sarcoidosis focal lesion. Conclusions: Hepatocellular carcinoma focal lesions are much stiffer than lymphoma, metastasis or sarcoidosis focal lesions. Fibroscan may be a useful non-invasive method in the prediction of hepatocellular carcinoma in the future.

关键词： Hepatic Focal Lesions Hepatocellular Carcinoma Fibroscan Stiffness

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A 2.4 GHz Switched Beam Antenna for Indoor Applications Using Angle of Arrival Estimation

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Open Journal of Antennas and Propagation 2016年第3期4卷 109-118页

作者： Reham Elsamnty Ahmed mohamed Attiya esmat Abdel Fattah Abdallah Abdel Hadi Ammar Electrical Engineering Department Al-Azhar University Cairo Egypt Microwave Engineering Department Electronics Research Institute Giza Egypt Microstrip Department Electronics Research Institute Giza Egypt

This study introduces a new design of planar antenna array for ISM band applications at 2.4 GHz. This prototype is switched beam antenna, namely planar antenna with four meandered slotted triangular elements (PAFMSTE), which is proposed for wireless indoor applications. The Base Station (BS) equipped with this planar antenna is preferred to be at the center position on the room ceiling to cover all sectors of the room. It is designed to use four directional triangular elements arranged to form a square planar antenna array. The PAFMSTE is used to obtain optimal directivity in four directions in azimuth plane with 3 dB beamwidth of 90°at a specific orientation of 30°in elevation plane. Switched parasitic technique is used to enable PAFMSTE to steer a directional beam through four locations by using four PIN diodes switches. The High Frequency Structure Simulator (HFSS) is used as an efficient simulation tool to optimize the performance of the PAFMSTE antenna. The fabrication and measurements of the PAFMSTE antenna are introduced. The proposed antenna enable radio positioning via Angle of Arrival (AOA) information collected from nearby devices. Then, the Cramér-Rao Bound (CRB) is presented for AOA estimation using identically and equally spaced antenna elements. The CRB depends on the directivity, where the maximum values of CRB are 1.35 × 10-3 and 8 × 10-3 at HPBW of 60° and 90°, respectively.

关键词： Indoor Communications Switched Beam Antenna Directional Microstrip Antenna Slotted Patch Antenna Radio-Positioning AOA Estimation CRB

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Effect of corn pre-puffing on the efficiency of MgO-engineered biochar for phosphorus recovery from livestock wastewater:mechanistic investigations and cost benefit analyses

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Biochar 2023年第1期5卷 462-478页

作者： Yaru Peng Yuan Luo Yimeng Li Muhammad Azeem Ronghua Li Chuchu Feng Guangzhou Qu esmat F.Ali mohamed A.Hamouda Peter S.Hooda Jörg Rinklebe Ken Smith Zengqiang Zhang Sabry M.Shaheen College of Natural Resources and Environment Northwest A&F UniversityYangling 712100Shaanxi ProvinceChina Key Laboratory of Urban Environment and Health Ningbo Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Institute of Soil and Environmental Sciences Pir Mehr Ali Shah Arid Agriculture University RawalpindiRawalpindi 46300PunjabPakistan Department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Civil and Environmental Engineering Faculty of EngineeringUnited Arab Emirates UniversityAl AinAbu DhabiUnited Arab Emirates School of Engineering and the Environments Kingston University LondonKingston University LondonKingston Upon Thames KT12EELondonUK University of Wuppertal School of Architecture and Civil EngineeringLaboratory of Soil and Groundwater ManagementInstitute of Foundation EngineeringWater-and Waste-ManagementPauluskirchstraße 742285 WuppertalGermany The Department of Environmental Science The University of ArizonaShantz Building Rm 4291177 E 4Th St.TucsonTucsonArizona 85721USA Department of Arid Land Agriculture Faculty of MeteorologyEnvironmentand Arid Land AgricultureKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Soil and Water Sciences Faculty of AgricultureUniversity of KafrelsheikhKafr El-Sheikh 33516Egypt

To improve the phosphorus(P)recovery efficiency from livestock wastewater,a novel MgO doped mildewed corn biochar with thermal pre-puffing treatment(Mg-PBC)and without pre-puffing(Mg-BC)was synthesized and *** thermal-puffing pretreatment improved the effectiveness of metal soaking and MgO dispersion.P recovery time with Mg-PBC(7 h)was significantly shorter than that with Mg-BC(12 h).Moreover,Mg-PBC showed significantly higher P recovery capacity(241 mg g^(−1))than Mg-BC(96.6 mg g^(−1)).P recovery capacity of the Mg-PBC fitted to the Thomas model was 90.7 mg g^(−1),which was 4 times higher than that of Mg-BC(22.9 mg g^(−1))under column test *** mechanisms involved in P recovery included precipitation,surface complexation,and electrostatic *** adsorption,both Mg-BC and Mg-PBC showed relatively low regeneration *** P loaded Mg-BC(Mg-BC-P)and Mg-PBC(Mg-PBC-P),the later particularly,obviously increased the available P content and promoted plant *** release of P increased with time in the Mg-PBC-P treated soil,while it decreased with time in the P fertilizer treated soil.A cost-benefit analysis revealed that thermal-puffing pretreatment greatly increased the profit of MgO doped biochar from−0.66 to 5.90 US$kg^(−1).These findings highlight that biomass pre-puffing is a feasible treatment to produce MgO modified biochar and to recover P from livestock wastewater,and that the Mg-PBC-P can be used as a slow-release P fertilizer.

关键词： Engineered biochar Biomass pre-puffing Nutrient recovery Wastewater engineering Cost-benefit analysis

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