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2011
Osman, A., "Quark Model for Kaon Nucleon Scattering", PRAMANA- Journal of Physics, 2011. Abstract

IF: 0.561

Refaie, A. I., "Radiative Plasma Parameters for Several Levels of Cu I", International Journal of Pure and Applied Physics, 2011. Abstract

Energy levels, spontaneous radiative decay rates and electron impact collisionstrengths are calculated for Cu I with the Relativistic Dirac-Fock (RDF).method.

Samer, M., W. Berg, H. - J. Muller, M. Fiedler, M. Glaser, C. Ammon, P. Sanftleben, and R. Brunsch, "Radioactive 85kr And Co2 Balance For Ventilation Rate Measurements And Gaseous Emissions Quantification Through Naturally Ventilated Barns", Transactions of the ASABE, 2011. Abstract

Animal housing is a major source of gaseous emissions, such as ammonia (NH3), methane (CH4), nitrous oxide (N2O), and carbon dioxide (CO2). Ammonia is an atmospheric pollutant and responsible for eutrophication and soil acidification, while CO2, CH4, and N2O are greenhouse gases (GHG) that contribute to global warming. The quantification of gaseous emissions from livestock buildings with natural ventilation systems is a particularly difficult task and is associated with uncertainties that are largely unknown. One key issue is to measure the ventilation rate and then to quantify the gaseous emissions. Therefore, in this study, the ventilation rate was determined by three different methods simultaneously. Field experiments were carried out to study the ventilation rate in a naturally ventilated dairy barn located in northern Germany during the summer seasons from 2006 to 2010. The air exchange rates (AER) as well as the ventilation rates were determined by the decay of the radioactive tracer krypton-85, the carbon dioxide (CO2) balance, which was used as the reference method in this study, and the combined effects of wind pressure and temperature difference forces (WT method). Subsequently, the results were compared with each other by carrying out Pearson correlation analysis and developing a regression model.

Youssef, H. M., R. Koppolu, and T. Schnurbusch, "Re-Sequencing of Vrs1and Int-C Loci Shows that Labile Barleys(HordeumVulgareConvar", Genet Resour Crop Ev, 2011. Abstract

Labile-barleys (Hordeumvulgare L. convar. labile (Schiem.) Mansf.) Are found in the highlands of Ethiopia, Eretria and North India-Pakistan districts. They represent a distinct spike form showing row-type alterations even within individual spikes of the same genotypes. Variation at the six-rowed spike 1 (vrs1) locus is sufficient to control barley lateral spikelet fertility, which is also modified by alleles at the intermedium-c (int-c) locus. This study aimed at re-sequencing these two loci to investigate whether labile-barleys have a two-rowed genetic background, resulting in increased lateral spikelet fertility, or show reduced lateral fertility if they possess a six-rowed genetic background. The Vrs1 re-sequencing results of 221 supposedly labile-barley accessions from Ethiopia revealed 13 accessions with two novel vrs1.a1 haplotypes. Following the current nomenclature of vrs1 haplotypes, the new haplotypes were named as haplotypes 66 and 67. Re-sequencing at the int-c locus showed that 118 of the labile-barleys possessed the previously described Int-c.a allele but only one accession was found having a novel Int-c.a haplotype in the homozygous state (termed Int-c.a haplotype1; Hap_1). Interestingly, 101 labile-barleys carried the Int-c.a allele and Int-c.a haplotype1 simultaneously, suggesting maintained heterozygosity or recent gene duplication at this locus. Only one accession had a two-rowed haplotype (Vrs1.b3, int-c.b1) and one accession possessed the Vrs1.t (deficiens) and Int-c.a alleles (six-rowed). These two accessions were considered as misclassified labile genotypes and not included in further analysis. Thus, these results confirmed that all of the 219 labile accessions studied in this work showed six-rowed alleles at vrs1 but reduced lateral spikelet fertility. This reduction is most likely caused by the recessive labile (lab) locus which we are in the process to characterize further.

Mohareb, R. M., and R. A. Ibrahim, "Reaction Of Phenylhydrazo Ethylacetoacetate With Cyanoacetyl Hydrazine: Novel Synthesis Of Pyridazine And Pyrazole Derivatives And Their Anti-Tumor Evaluations", Internatioal Journal of Applied Biology and Pharm. Technology, 2011. Abstract

The reaction of phenylhydrazoethyl acetoacetate (1) with cyanoacetyl hydrazine (2) in an oil bath in the presence of ammonium acetate gave the pyridazine derivative 4. However, carrying the same reaction but in ethanolic/Et3N gave the pyrazole derivative 5. Compounds 4 and 5 were used in a series of heterocyclization reactions to afford products that showed anti-tumor activities towards three cell lines namely, breast adenocarcinoma (MCF-7), non-small cell lung cancer (NCI-H460) and CNS cancer (SF-268).

Abdelhamid, A. O., A. A. Fahmi, and A. B. Ali, "Reactions with hydrazonoyl halides 66: Synthesis of some new thiadiazoles, triazolino[4,3-a]pyrimidines and pyridazines containing coumarin moiety", European Journal of Chemistry, 2011. Abstract

2,3?Dihydro?1,3,4?thiadiazoles, triazolino[4,3?a]pyrimidines, isoxazoles and isoxazolo[3,4? d]pyridazines containing coumarin moities were synthesized from the reactions of methyl(or benzyl) carbodithioate, pyrimidine?2?thione and 3?(3?(dimethylamino)acryloyl)?2H?chromen?2?one derivatives with C?coumarinoyl?N?phenylhydrazonoyl bromide. The structures of all the newly synthesized compounds were confirmed by elemental analyses and spectral data.

Abdou, S. E., S. M. El-Qusy, S. S. Ghabrial, and M. I. Haggag, "Reactions with Visnaginone: Synthesis, Cyclisation and Microbial Evaluation of Some Visnaginone Thiosemicarbazone Derivatives", Modern Applied Science, 2011. Abstract

Several new visnaginone ethers were prepared and their thiosemicarbazone derivatives are synthesized. The behavior of the thiosemicarbazones in methanolic sodium methoxide and hydrochloric acid is discussed. Structures were established on the bases of elemental and spectral data studies. Some of the thiosemicarbazones were tested for their antimicrobial activity. The structures of the synthesized derivatives (5a-g,6a-g) were confirmed by means of IR, 1H NMR, MS and elemental analyses. The synthesized derivatives (5a-g,6a-g) were subjected to the Microbiology Division, Microanalytical Center, Cairo University, (5a-g,6a-g) showed a variable degree of antimicrobial activity.

Hassaneen, H. M., and H. M. E. H. Y. S. Mohammed, "Reactivity of 1-methylisoquinoline synthesis of pyrazolyl triazoloisoquinoline and thiadiazolyl isoquinoline derivatives", Natural Science, 2011. Abstract

The reaction of 1-methylisoquinoline 1 with hydrazonoyl halides 2 in ethanol in the presence of chitosan under microwave irradiation affords triazoloisoquinoline 4. Product 4 reacts with dimethylformamide-dimethylacetal to give enaminones 7 which react with hydrazonoyl halides to give pyrazolyl triazoloisoquinoline 13. Also, 1-methylisoquinoline 1 reacts with arylisothiocyanate to give thioanilide 15 which reacts with hydrazonoyl halides to give the corresponding thiadiazolyl isoquinoline derivatives 20, 24.

Hassaneen, H. M., and H. H. Z. A. M. E. Gomaa, "Reactivity of 3-Cyanoacetylindole Derivatives: Synthesis of 3-Hydrazonopyrazolyl and 3-Thiadiazolyl Indole Derivatives", International Journal of Organic Chemistry, 2011. Abstract

The coupling reaction of 3-cyanoacetyl-2-methylindole 1a with the aromatic diazonium salts gave the corresponding arylhydrazones 2a-e. Compounds 2 were used for synthesis of 4-aminopyrazole-5-carbonitrile 4a-e and 5-amino-4-arylazo-3-pyrazoles 5a-e derivatives. Also, treatment of 3-cyanoacetyl-2-phenylindole 1b with phenyl isothiocyanate gave the corresponding thioacetanilide 7. The later compound 7 was utilized as the key intermediate for the synthesis of some new thiadiazole derivatives 9a-r. The structures of all new compounds were elucidated on the basis of elemental analysis and spectral data.

Al-Mousawi, S. M., M. S. Moustafa, I. A. Abdelhamid, and M. H. Elnagdi, "Reassignment of the Structures of Condensation Products of a-keto ? Formylarylhydrazones with Ethyl Cyanoacetate: a Novel Route to Ethyl 5-arylazo-2-hydroxynicotinates", Tetrahedron Letters, 2011. Abstract

The condensation of a-keto ?-formylarylhydrazones with ethyl cyanoacetate afforded ethyl 5-arylazo-2- hydroxy-6-aryl (or alkyl) nicotinates. The structures of the reaction products could be established based on X-ray crystal structure determination.

Dawood, K. M., N. M. Elwan, and B. F. Abdel-Wahab, "Recent Advances on the Synthesis of Azoles, Azines and Azepinesfused to Benzimidazole", Arkivoc, 2011. Abstract

The current review article represents a survey covering the literatures on azoles, azines and azepines fused to the a face of a benzimidazole moiety since 1980. Synthetic routes leading to benzimidazole fused with different ring systems; five-, six-, and seven-membered heterocyclic rings, containing one-, two- and three-heteroatoms were reported utilizing simple reactive benzimidazole synthons.

Afify, A. E. - M. M. R., "Recent Techniques Applied for Pesticides Identification and Determination in Natural Products and Its Impact to Human Health Risk", Edi Pesticides in the Modern World-Trends in Pesticides Analysis, 2011. Abstract

-2011

Gabera, H. M., and T. A.?M. Moussa, "Regioselective Synthesis And Antimicrobial Studies Of Novel Bridgehead Nitrogen Heterocycles Containing The Thienopyrimidinone Skeleton", European Journal of Chemistry, 2011. Abstract

Versatile 2?(alkylthio)pyrimidine?type and 2?(phenacylamino) thiophene building blocks (4ad) and 16 were obtained based on an ortho functionalized thiophene derivative 1.

Hassaneen, H. M., and O. M. N. A. M. Abunada, "Regioselectivity of Nitrilimines 1,3-Dipolar Cycloaddition: Novel Synthesis of Spiro[4,4]nona-2,8-dien-6-one Derivatives", Heteroatom Chem, 2011. Abstract

Regioselective 1,3-dipolar cycloaddition of nitrilimines (generated in situ from dehydrohalogenation of the corresponding hydrazonoyl halides by the action of triethylamine) with 4-arylidene-1-aryl-2-phenyl-1H-imidazol-5(4H)-one 3 afforded the corresponding spiro[4,4]nona-2,8-dien-6-one 4. The reaction was carried out in dry benzene under reflux temperature. Refluxing in acetic acid, 4a was converted to its respective N-phenylpyrazole-5-carboxamide 8. The structures of prepared compounds were established by elemental analyses and spectral data (IR, MS, 1H, and 13C NMR).

W.O.Younis, and S.H.Allam, "Relativistic Energy Levels and Transition Probabilities for the Al-Like Ions (Z = 33- 35)", International Review of Physics, 2011.
Orabi, M., "Removing the Forbidden States in a 4-alpha System", Few-Body Syst, 2011.
Osman, A., "Renormalized three-body Equations with Short-range Forces", Canadian Journal of Physics, 2011.
Abo-EL-Sooud, K., M. M. Hashem, A. Ramadan, A. A. M. El-Aty, K. Y. Awadallaha, and A. Q. Gab-Allaha, "Research Strategies for Treatment of Nanobacteria", Insight Nanotechnology, 2011. Abstract

Background: Modern medicine strives to get an efficient treatment for Nanobacteria (NB) as it highly treatment-resistant, persisters, dormant forms and biofilms containing hydroxyl apatite or carbonate.

Khalil, A. A. I., M. A. Gondal, and N. Al-Suliman, "Resonant Photo-Acoustic Detection of Carbon Monoxide with Uv Laser at 213 Nm", Appl Phys B-Lasers O, 2011. Abstract

A trace-gas sensor for carbon monoxide based on Pulsed Laser-Induced Photo-Acoustic Spectrod for the first time. PLIPAS-based sensor with different cell geometry was employed to enhance the sensitivity down to 58 ppbV level. The parametric dependence of the PLIPAS signals on CO gas concentration, buffer gas (Ar, O2 and He) concentration, laser pulse energy was studied and Ar proved to be better than O2 and He in terms of enhancing the sensitivity of the systemscopy (PLIPAS) in conjunction with laser excitation wavelength of 213 nm was designed, fabricated and teste. The signal-to-noise ratio and limit of detection have been quantified for different experimental conditions. This study proves that PLIPAS-based CO gas sensor is a reliable gas-leak detection system with high sensitivity and selectivity. Hence this sensor can be employed for pollution monitoring and detection of CO in a noisy environment.

A.M., H., R. E. M. Khateeb, H. A. Amer, S. K. A. Abou-El-Dobal2, K. E. H. Shahat, and S. W., "Response of Fasciola Free and Infected Buffaloes to CIDR Ovsynch Treatment During Summer Season with Emphasis on Sex Hormone and Biochemical Changes", J. American Science, 2011. Abstract

Improvement of buffalo fertility during summer season was our goal. One hundred and sixty three buffalo-cows were examined for parasitic infection using coprological and serological methods. All animals were subjected to gynecological examination, through rectal palpation and using ultra sonic examination to detect the ovarian and genital tract condition. Thirty one non-pregnant buffalo-cows (18 healthy and 13 infected) were selected for treatment with CIDR OvSynch protocol. Blood samples were collected from animals before, during and after treatments. Serum samples were assayed for estradiol and progesterone using RIA technique. GPT,GOT, ALP, total and direct bilirubin, T. protein and glucose were measured . The percentage of infected buffaloes in the herd was 25.77% (42/163 animal), the prevalence of Fasciola Spp. infection among buffaloes was 6.75%. In Fasciola infected buffaloes, estradiol levels were decreased and progesterone concentration was increased significantly (p<0.05). Treatment with CIDR OvSynch protocol, elevated significantly both estradiol and progesterone levels in infected animals than healthy one, elevated direct bilirubin and total protein and decreased significantly ALP and glucose in infected animals. CIDR OvSynch regimen increased the pregnancy rate in both healthy (55.6%) and infected (30.8%) buffaloes. It is concluded that infection with Fasciola had adverse effects on some sex hormone and liver enzymes imbalance and animal fertility represented in decreasing response to synchronizing agents and lowering pregnancy rate.Treatment with CIDR OvSynch protocol improved buffalo fertility and resumed ovarian activity of buffaloes during summer season.

MotiorRahman, M., A. A. Soaud, F. A. H. Darwish, and M. Sofian-Azirun, "Responses of Sulfur, Nitrogen and Irrigation Water on Zea Mays Growth and Nutrients Uptake", AJCS, 2011. Abstract

Availability of both native and applied nutrients is one of the major constrains for plants growth in sandy calcareous soils. Elementalsulfur (S0) is often applied to acidify calcareous soil which increases the availability of nutrients in soils. The present study was sought toexamine the effect of S0 combined with or without N under acidified (pH 6.5) and normal (pH >7.5) irrigation water on growth, apparentN-use efficiency (NUE) and uptake availability of nitrogen (N), phosphorus (P), sulfur (S), iron (Fe), zinc (Zn) and manganese (Mn) by

Al-Abd, A. M., A. M. Mahmoud, G. A. El-Sherbiny, M. A. El-Moselhy, S. M. Nofal, H. A. El-Latif, W. I. El-Eraky, and H. A. El-Shemy, "Resveratrol Enhances the Cytotoxic Profile of Docetaxel and Doxorubicin in Solid Tumour Cell Lines in Vitro", Cell Proliferation, 2011.
Habib, D. F., A. A. Fahmi, N. M. Kholousy, A. I. Amin, M. Shalaby, M. M. Ahmed, and A. A. M. Shanab, "The Role of Liver in Leptin Metabolism in Experimental Nephrotic Syndrome", Excli Journal, 2011. Abstract

Leptin is a hormone influencing food intake, energy expenditure and body weight. It is pro-duced by adipocytes, exerts its effects on brain, endocrine pancreas and other organs by acti-vating trans-membrane receptors and is cleared from plasma mainly by the kidneys. Several studies have suggested that leptin's effects on metabolism are mediated by the liver.

El-Rahman, A. H. A., S. A. Salih, and A. A. Mokhtar, "Role of Phosphoric Acid on the Corrosion Performance of Pb-1", Afinidad, 2011. Abstract

The corrosion behavior of a commercial Pb-1.7%Sb grid of lead-acid batteries under open circuit conditions in 5 M H2SO4 in the presence of phosphoric acid is studied by electrochemical impedance spectroscopy and cyclic voltammetry. Dependence of corrodibility of the alloy on H3PO4 concentration is weak up to 0.7M. After days of corrosion, the corrosion rate in the presence of H3PO4 is slightly higher than in its absence, due to retardation of the growth of an insulating PbSO4 layer that acts as an effective diffusion barrier of the corrosive species. The electronic and diffusion properties of the passive layer formed in the presence of H3PO4 are substantially inferior. Cyclic voltammetry indicates a decrease in amounts of PbSO4 and Sb2O3 formed in the presence of H3PO4 and with increasing its concentration. Also, the amount of PbO formed beneath the PbSO4 layer increases with increasing H3PO4 concentration on the expense of the amount of PbSO4.

Dardir, H. A., N. A. Aba-Alkhail, and A. A. A. Abdel-All, "Safety Evaluation of Enterococcal Strains Isolated from DairyProducts and Clinical Samples using RT-PCR", World Journal of Dairy & Food Sciences 6 (2): 234-240(2011), 2011. Abstract

Enterococci are part of the dominant microbiota of several dairy products, which can be used in thedairy industry as starter or probiotic cultures. However, they are also implicated in severe multi-resistantnosocomial human infections. In this study, phenotypic tests using API 20 S strip were used for speciesidentification of 60 and 55 enterococcal strains isolated from dairy products and clinical samples, respectively.