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Seasonality in the occurrence of two lepidopterous olive pests in Egypt

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Insect Science 2011年第5期18卷 565-574页

作者： Esmat M. Hegazi Maria A. Konstantopoulou Annette Herz Wedad E. Khafagi Essam Agamy Sania Showiel Atwa Atwa Gehan M. Abd EI-aziz Safaa M. abdel-Rahman Faculty of Agriculture University of Alexandria Egypt Chemical Ecology and Natural Products Laboratory NCSR ＂Demokritos Ag. Paraskevi Athens Greece Federal Biological Research Centre for Agriculture and Forestry Institute for Biological Control Darmstadt Germany Plant Protection Research Institute Sabahia Alexandria Egypt Faculty of Agriculture Cairo University Cairo Egypt Plant Protection Research Institute Cairo Egypt Central Laboratory of Pesticides Alexandria Egypt

Prays oleae Bern, （OM） andPalpita unionalis Hfib., （JM） are two of the most important pests in olive groves in Egypt. A 3-year monitoring study using sex pheromone traps in semi-arid and arid olive groves was performed. In the semi-arid grove, flight pattern of the OM was the same as in other Mediterranean countries, but in dates concordating plant phenology. The moth completes three generations annually： the first flight is in March to April, the second is in May to June and the third occurs in August to October. In the arid olive grove, an interesting flight pattern was observed. First flight was always very close or overlapped with the second one with no male catches during August to October. However, eggs were present most of the season, indicating unusually high female presence and oviposition activity of the OM during the absence of males in the traps. Generally, moth densities were significantly lower in low fruiting years than in higher ones and were also lower in the arid olive grove than in the semi-arid one. In contrast, JM males were present all season, exhibiting six to seven and three to four overlapping flight peaks in arid and semi-arid olive groves, respectively. Moth densities were significantly higher in the arid olive grove than those in the semi-arid one. This study shows that trapping location and fruit beating year are characteristics that strongly affect the grove-specific information needed to estimate correctly adult emergence and thus the timing of control measures.

关键词： egg-laying activity monitoring olive growing areas Palpita unionalis Prays oleae sex pheromone

Condensation of α-and β-acetylnaphthalene with dimethyl β,β-dimethyl glutarate

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Chinese Journal of Chemistry 1991年第4期9卷 360-364页

作者： EL-BASSIOUNY Fakhry abdel-aziz Department of Chemistry,Faculty of Science,Ain Shams University,Cairo,A.R.Egypt

α-and β-Acetylnaphthalenes condensed with dimethyl β,β-dimethyl glutarate in the presence of sodium hydride to give the corresponding half-esters,the E-isomers 2a and 2b being predominant. The structure and config... 详细信息

关键词： Condensation of dimethyl glutarate and acetylnaphthalene with dimethyl

Improved photoconductive properties of composite nanofibers based on aligned conjugated polymer and single-walled carbon nanotubes

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Nano Research 2013年第2期6卷 149-158页

作者： Florian Massuyeau Yuanchun Zhao abdel aziz El Mel Abu Yaya Frederic Geschier Eric Gautron Serge Lefrant Jean Yves Mevellec Chris Ewels Chain-Shu Hsu Eric Faulques Jany Wery Jean Luc Duvail fnstitut des Materiaux Jean Rouxel UMR6502 CNRS Universite de Nantes 2 rue de la Houssiniere F-44322 Nantes France Department of Applied Chemistry Chiao Tung University 1001 Ta Hsueh Road Hsin-Chu 30010 Taiwan China

We successfully address the challenge of aligning single-walled carbon nanotubes （SWNTs） and conjugated polymer chains in composite nanofibers for enhancing their opto-electrical properties. A pore-filling template strategy has been developed to prepare such nanocomposites from SWNTs and poly（para-phenylene vinylene）（PPV） chains, with both species well-oriented aligned along the pore axis. Addition of the SWNTs leads to a remarkable increase in photocurrent of four orders of magnitude as compared to equivalent pristine PPV nanofibers. Further analysis indicates that the strong photocurrent enhancement is not simply an effect of alignment, but additionally benefits from alignment-enhanced interaction of polymer chains with SWNTs, as supported by density functional theory （DFT） calculations.

关键词： Tubular nanocomposites single-walled carbonnanotube (SWNT) photoconductivity transport properties conjugated polymer density functional theory (DFT)calculation

Assessment of hepatic fibrosis in pediatric cases with hepatitis C virus in Egypt

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World Journal of Gastroenterology 2007年第20期13卷 2846-2851页

作者： Manal A El-Hawary Mona S El-Raziky Gamal Esmat Hanan Soliman Amr Abouzied Maissa El-Raziky Wafaa El-Akel Rokaya El-Sayed Fatma Shebl abdel aziz Shaheen Hanaa El-Karaksy Department of Pediatrics Fayoum UniversityEgypt Department of Pediatrics Cairo UniversityEgypt Department of Tropical Medicine Cairo UniversityEgypt Department of Pathology Cairo UniversityEgypt Department of Tropical Medicine Hepatitis C ProjectEgypt Department of Public Health National Liver InstituteEgypt

AIM: To assess hepatic fibrosis and factors associated with its progression in children with HCV infection. METHODS: At the Hepatology Unit,Cairo University Children's Hospital,a single liver biopsy was performed to 43 children with HCV infection after an informed consent between 1998-2004. Their mean age at liver biopsy was 8.67 ± 4.3 years. RESULTS: Among the 43 patients' biopsies,12 (27.9%) were having no fibrosis,20 (46.5%) mild fibrosis and 11 (25.6%) moderate to severe fibrosis. The median time for development of fibrosis was estimated to be 5.5 years. Developing fibrosis was significantly associated with shorter duration from first detected ALT elevation to biopsy (12 mo vs 1.2 mo,P = 0.015) and having higher levels of direct serum bilirubin (0.3 mg/dL vs 0.5 mg/dL,P = 0.048). No association was found between fibrosis stage and the presence of co-morbid conditions (P = 0.33). CONCLUSION: Hepatic fibrosis was present in 72.1% of children with HCV infection. The development of fibrosis was associated with higher levels of direct serum bilirubin. There was no significant association between fibrosis and age,duration of infection,risk factors,co-morbid conditions and most biochemical parameters.

关键词： Children Egypt Fibrosis Hepatitis C virus Liver

Laboratory evaluation of Limnatis nilotica leech(Annelida:Hirudinea)as a biocontrol agent for the schistosome-vector snail,Bulinus truncatus

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Journal of Coastal Life Medicine 2015年第10期 797-800页

作者： Yassir Sulieman abdel-aziz AAhmed Azzam Afifi Theerakamol Pengsakul Department of Zoology Faculty of Science and TechnologyUniversity of ShendiSudan Department of Zoology Faculty of ScienceUniversity of KhartoumSudan Department of Zoology Faculty of Science and TechnologyOmdurman Islamic UniversitySudan Faculty of Medical Technology Prince of Songkla UniversityHat YaiSongkhla 90110Thailand

Objective:To investigate the predation efficacy of the freshwater leech,Limnatis nilotica(***)as a potential biological control agent against different stages of the Bulinus truncatus(***),the intermediate host of human Schistosoma haematobium,under laboratory ***:The leech *** and the snail *** were collected from El Kiryab Agriculture Scheme,***,the predatory activity of the leech was evaluated against eggs,neonates and adults of the snail in a series of different experiments under laboratory ***:The findings showed that the *** leech was a voracious predator towards the eggs and neonates of *** snails with a shell length of up to 3 mm,as well as of adult snails with an shell length greater than 3 ***:The results showed that *** had a significant impact on *** ***,long term studies under natural field conditions are needed to support these results.

关键词： Bulinus truncatus snail Limnatis nilotica leech Biological control Schistosomiasis

Anaphylactoid Shock with Infusion of 5% Albumin in a Patient under General Anesthesia

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Open Journal of Anesthesiology 2012年第5期2卷 214-216页

作者： Samer abdel-aziz Esamelden abdelnaem Neeraj Kumar Mohamed Ismaeil Department of Anesthesiology University of Arkansas for Medical Sciences Little Rock USA

A 61 year old male patient undergoing gastrectomy under general anesthesia developed severe anaphylactoid shock after 15 minutes from starting 5% albumin infusion. His blood pressure went from 101/67 down to 44/23 with his heart rate going up from 91 to 99. A total of 1600 mcg of phenylephrine were given without any improvement in the hemo-dynamics. We then gave 50 mcg of Epinephrine to which blood pressure rapidly responded going up to 141/60 (mean 88). Then 15 mg of Dexamethasone were given. Blood pressure remained stable with the mean between 75 and 90, without requiring anymore pressors. 5% albumin is considered among the safer colloids with a risk of anaphylactoid reactions less than gelatins and dextrans and comparable to starches. However, severe life threatening anaphylaxis has been reported with Albumin infusion. With the still ongoing crystalloid colloid debate, with many studies showing no survival benefit with colloid use for volume resuscitation, the risk of severe anaphylactic shock, even with the safer colloids like albumin should drive to a more conservative use of albumin for volume resuscitation, specially under general anesthesia, when recognizing the signs and symptoms of anaphylaxis and the offending agent maybe more challenging.

关键词： Albumin Colloids Anaphylaxis Anesthesia

Temperature Effects on the Electrical Performance of Large Area Multicrystalline Silicon Solar Cells Using the Current Shunt Measuring Technique

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Engineering（科研） 2010年第11期2卷 888-894页

作者： Hala Mohamed abdel Mageed Ahmed Faheem Zobaa Mohamed Helmy abdel Raouf Abla Hosni Abd El-Rahman Mohamed Mamdouh abdel aziz 不详

The temperature effects on the electrical performance of a large area multicrystalline silicon solar cell with back-contact technology have been studied in a desert area under ambient conditions using the current shunt measuring technique. Therefore, most of the problems encountered with traditional measuring techniques are avoided. The temperature dependency of the current shunt from 5oC up to 50oC has been investigated. Its temperature coefficient proves to be negligible which means that the temperature dependency of the solar cell is completely independent of the current shunt. The solar module installed in a tilted position at the optimum angle of the location, has been tested in two different seasons (winter and summer). The obtained solar cell short circuit current, open circuit voltage and output power are correlated with the measured incident radiation in both seasons and all results are discussed.

关键词： Large Area Multicrystalline Silicon Solar Cell Current Shunt Measuring Technique Temperature Effects Short Circuit Current Open Circuit Voltage Accumulated Power Incident Radiation

Dendritic cell co-stimulatory and co-inhibitory markers in chronic HCV: An Egyptian study

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World Journal of Gastroenterology 2013年第43期19卷 7711-7718页

作者： Hanan Fouad Maissa Saeed El Raziky Rasha Ahmed abdel aziz Dina Sabry Ghada Mahmoud abdel aziz Manal Ewais Ahmed Reda Sayed Medical Biochemistry Department Faculty of MedicineCairo University11562 CairoEgypt Gastroenterology and Tropical Department Faculty of MedicineCairo University11562 CairoEgypt Medical Biochemistry Department Faculty of MedicineBeni Sueif University19206 Kornish Al NileBani SweifEgypt

AIM:To assess co-stimulatory and co-inhibitory markers of dendritic cells(DCs)in hepatitis C virus(HCV)infected subjects with and without ***:Three subject groups were included in the study:group 1 involved 50 control subjects,group2 involved 50 patients with chronic HCV infection and group 3 involved 50 HCV uremic subjects undergoing ***83,CD86 and CD40 as co-stimulatory markers and PD-L1 as a co-inhibitory marker were assessed in peripheral blood mononuclear cells by realtime polymerase chain ***-10(IL-10)and hyaluronic acid(HA)levels were also *** findings were correlated with disease activity,viral load and ***:There was a significant decrease in costimulatory markers;CD83,CD86 and CD40 in groups2 and 3 vs the control ***-stimulatory markers were significantly higher in group 3 vs group *** was a significant elevation in PD-L1 in both HCV groups vs the control ***-L1 was significantly lower in group 3 vs group *** was a significant elevation in IL-10 and HA levels in groups 2 and 3,where IL-10was higher in group 3 and HA was lower in group 3 vs group *** level was significantly correlated with disease activity and fibrosis grade in group ***-10 was significantly correlated with fibrosis grade in group *** were significant negative correlations between co-stimulatory markers and viral load in groups 2 and3,except CD83 in dialysis *** was a significant positive correlation between PD-L1 and viral load in both HCV ***:A significant decrease in DC co-stimulatory markers and a significant increase in a DC coinhibitory marker were observed in HCV subjects and to a lesser extent in dialysis patients.

关键词： Hepatitis C virus Uremia Hemodialysis Dendritic cells CD83 CD86,CD40 PD-L1 Interleukin-10 Hyaluronic acid

An Improved Design of a Fully Automated Multiple Output Micropotentiometer

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Energy and Power Engineering 2010年第2期2卷 103-110页

作者： Hala Mohamed abdel Mageed Ahmed Faheem Zobaa Mohamed Helmy abdel Raouf Abla Hosni Abd El-Rahman Mohamed Mamdouh abdel aziz National Institute for Standards GizaEgypt University of Exeter ExeterUK Cairo University GizaEgypt

This paper describes in details a new design of a fully automated multiple output micropotentiometer (?pot). A prototype has been built at the National Institute for Standards (NIS), Egypt to establish this highly improved AC voltage source in the millivolt range. The new device offers three different outputs covering a wide frequency range from only one outlet. This valuably supports the precise sourcing ranges of low AC voltage at NIS. The design and the operation theory of this prototype have been discussed in details. An automatic calibration technique has been introduced through specially designed software using the LabVIEW program to enhance the calibration technique and to reduce the uncertainty contributions. Relative small AC-DC differences of our prototype in the three output ranges are fairly verified. The expanded uncertainties of the calibration results for the three output ranges have been faithfully estimated. However, further work is needed to achieve the optimum performance of this new device.

关键词： Multiple Output μpot AC-DC Transfer Standard Single Junction Thermal Converter Calibration Uncertainty