A. Abd El-Salam - Academia.edu (original) (raw)
Papers by A. Abd El-Salam
Journal of Plant Protection and Pathology, 2014
The lesser grain borer, Rhizopertha dominica Fabricius and the red flour beetle, Tribolium castan... more The lesser grain borer, Rhizopertha dominica Fabricius and the red flour beetle, Tribolium castaneum Herbst, are of the most insect species which cause the highest grain damage. Many chemical insecticides related to different groups used as protectants to stored products presented serious problems to human health and environment. To avoid these disadvantages, laboratory experiments were carried out to evaluate two materials namely, plant oil (Orange oil) and bioinsecticide, spinosad as stored wheat grain protectants against T. castaneum and R. dominica using two bioassays technique, mixing with medium and repellency at different exposure periods (72 h for mixing with feeding medium and 24 h for repellency). Results obtained revealed that the two tested materials, orange oil and spinosad had moderately action on the two tested insects either by mixing with medium or by repellent bioassay methods. Data cleared that the effect of the tested materials increased with the increasing of concentration and period of exposure especially with mixing bioassay. For repellent effect, the highest level of concentration had the most action on both T. castaneum and R. dominica. Except orange oil against T. castaneum the effect of materials tested decreased through 24 h of exposure. Spinosad showed nearly similar effect on the two tested insects while R. dominica was found to be more tolerant than T. castaneum with orange oil. Finally, our findings suggest that spinosad and orange oil may to be potential protectants against R. dominica and T. castaneum in stored wheat grain principally with mixing bioassay technique.
Glazing of ceramic surfaces is recommended in order to improve the physical properties of dental ... more Glazing of ceramic surfaces is recommended in order to improve the physical properties of dental ceramics. Conventional methods for the surface treatment of dental ceramic materials are not capable of creating a smooth surface without microcracks. The special radiation characteristics of both XeCl excimer and CO 2 lasers make them suitable to treat ceramic surfaces in order to produce a glazed surface. The aim of this study was to investigate the surface hardness of dental ceramics after their glazing with both XeCl excimer and CO 2 lasers. Materials and methods: 70 specimens were prepared from both dental porcelain and In-Ceram Alumina (35 specimens each). In hardness test, 25 specimens of each ceramic material were divided into 5 specimens that were conventionally glazed, 10 specimens were excimer laser glazed with two different energy densities, and 10 specimens were glazed with CO 2 laser at two different power settings. The surface hardness was measured in (Kg/mm 2 ) using Vickers microhardness tester. In addition, SEM and X-ray diffraction analysis of the changes in surface structure were conducted. The results were analyzed and compared using one way ANOVA and LSD statistical tests at a level of significance of 0.05% (p < 0.05). Results: Statistical analysis of the results revealed insignificant increase in hardness values of 2 watt CO 2 laser and 1.5 Joule/cm 2 excimer laser glazed porcelain specimens. Also, there was insignificant increase in hardness values of 2 and 10 watt CO 2 laser glazed In-Ceram Alumina specimens. 10 watt CO 2 and 6.2 Joule/cm 2 excimer lasers glazed porcelain specimens demonstrated significant increase in their hardness values. In-Ceram Alumina specimens showed significant increase in their hardness values glazed with both energy densities of excimer laser. Scanning electron microscope images declared an increase in homogeneity and smoothness of the surfaces of laser glazed specimens especially those glazed with higher power setting of CO 2 laser and higher energy density of excimer laser when compared to conventionally glazed specimens. X-ray diffraction charts of both the control and laser glazed specimens are nearly identical, indicating that laser glazing had no effect on their internal microstructure and it was just a surface treatment. Conclusion: laser glazing improves surface hardness and smoothness of ceramic surfaces without affecting their internal structures.
2006 ITI 4th International Conference on Information & Communications Technology, 2006
The underlying paper presents a comparison of the learnable evolution model LEM and Pattern Searc... more The underlying paper presents a comparison of the learnable evolution model LEM and Pattern Search PS techniques as a function optimizer. In contrast to conventional Darwinian type evolutionary computation algorithm that uses various forms of mutation and/or recombination ...
Archives Of Phytopathology And Plant Protection, 2010
... Raja et al. (200135. Raja, N, Albert, S, Ignacimuthu, S and Dorn, S. 2001. ... Previous work ... more ... Raja et al. (200135. Raja, N, Albert, S, Ignacimuthu, S and Dorn, S. 2001. ... Previous work attributed the activity of O. basilicum to cineol, eugenol, estragole and comphor (Obeng et al. 199726.Obeng-Ofori, D, Reichmuth, C, Bekele, AJ and Hassanali, A. 1997. ...
Chemischer Informationsdienst, 1984
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1983
Chemischer Informationsdienst, 1981
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1982
Il Farmaco; edizione scientifica, 1983
Synthesis of some new 2-(N-tosyl- or N-phthalylaminoacyl or free aminoacyl or N-tosyldipeptidyl- ... more Synthesis of some new 2-(N-tosyl- or N-phthalylaminoacyl or free aminoacyl or N-tosyldipeptidyl- or N-phthalyldipeptidyl)aminopyrazine derivatives (II-XXX) are described. All 2-(aminoacyl)aminopyrazines (XIV-XVIII) have been found to be biologically active against a number of microorganism.
International Journal of Peptide and Protein Research, 1982
Synthesis of a series of N-(2-acetylaminothiazole-5-sulphonyl) amino acids (II-VI) and some of th... more Synthesis of a series of N-(2-acetylaminothiazole-5-sulphonyl) amino acids (II-VI) and some of their corresponding methyl esters (VII-XI) is described. Coupling of N-tosyl-or N-phthalylamino acid with 2-amino-2-thiazoline using the DCC method furnishes 2-(N-tosyl- or N-phthalylamino acyl) amino-2-thiazoline (XII-XXI). Hydrazinolysis of 2-(N-Pht-L-Phe or N-Pht-L-Ala) amino-2-thiazoline in ethanol afforded 2-(L-Phe or L-Ala) amino-2-thiazoline (XXII and XXIII) respectively. Synthesis of the dipeptide 2-(N-Tos-L-Val-L-Leu) amino-2-thiazoline (XXIV) has been achieved employing the azide method. Sixteen thiazole- and thiazoline-amino acid derivatives were found to be active against a number of microorganisms.
International Journal of Modern Physics E, 1993
Within the experimental errors the interaction mean free paths of He-fragments produced by the co... more Within the experimental errors the interaction mean free paths of He-fragments produced by the collisions of 12C, 22Ne and 28Si nuclei at 4.5 A GeV/c in nuclear emulsion have been found to be independent of the He-multiplicity and the distance from the interaction point. Evidence for the multiplicity scaling of He-fragments is reported. The pseudo-rapidities for the shower particles accompanying the emission of the different multiplicities of the projectile He-fragments are also investigated. Each of these distributions is found to be satisfactorily fitted by a single Gaussian distribution. The temperature of the system emitting the shower particles T is also calculated and found to be independent of both the projectile and the multiplicities of the He-fragment.
![Research paper thumbnail of ChemInform Abstract: Some Nucleophilic Reactions with 6-Benzoyl-2,3-dichloroquinoxaline: Synthesis of Tetrazolo[1,5-a]quinoxaline, 2-Methylidene-1,3-dithiolo[4,5-b]quinoxalines, Quinoxalino[2,3-b]quinoxalines and Pyrazolo[1′,5′:1,2]imidazolo[4,5-b]quinoxa](https://attachments.academia-assets.com/48883534/thumbnails/1.jpg)
](ChemInform, 2001
Some Nucleophilic Reactions with 6-Benzoyl-2,3-dichloroquinoxaline: Synthesis of Tetrazolo[1,5-a]... more Some Nucleophilic Reactions with 6-Benzoyl-2,3-dichloroquinoxaline: Synthesis of Tetrazolo[1,5-a]quinoxaline, 2-Methylidene-1,3dithiolo[4,5-b]quinoxalines, Quinoxalino[2,3-b]quinoxalines and Pyrazolo[1',5':1,2]imidazolo[4,5-b]quinoxalines. -The starting compound (I) is subjected to some nucleophilic reagents to study the effect of the benzoyl group on the reactivity of the two chlorine atoms. -(EL-GABY, M. S. A.; EL-SHARIEF, A. M. SH.; AMMAR, Y. A.; MOHAMED, Y. A.; EL-SALAM, A.
Mathematical Problems in Engineering, 2013
ABSTRACT The problem of restricted three bodies is considered. The treatment is carried out withi... more ABSTRACT The problem of restricted three bodies is considered. The treatment is carried out within the framework of the post-Newtonian approximation. The primaries also are assumed to be radiant sources. The locations of the collinear points are computed. Series forms of these locations are obtained as new results. A Mathematica program is constructed so as to draw the locations of collinear points versus the whole range of the mass ratio taking into account the photo-gravitational effects and/or the relativistic corrections. Analyses of these figures are addressed.
Anzeiger für Schädlingskunde Pflanzenschutz Umweltschutz, 1995
Laboratory evaluation of Neem Azai-S and Margosan-O was carried out against the adult and larvae ... more Laboratory evaluation of Neem Azai-S and Margosan-O was carried out against the adult and larvae of .Liriomyza trifolii Burgess. The feeding deterrent activ-Ity of both compounds was significantly realized against the adults particularly at high concentrations which lasted for 5 days after treatment. Both formulations also deterred the females from laying eggs and the percentage of oviposition deterrent index (ODI) reached 80.7 and 52.6 for Neem Azal-S and Margosan-O (2%), respectively.
Journal of Heterocyclic Chemistry, 1981
... 0 HeteroCorpora tion XXVI). Page 2. 1204 AM El-Naggar, F. S. M. Ahmed, AM Abd El-Salam, M. A.... more ... 0 HeteroCorpora tion XXVI). Page 2. 1204 AM El-Naggar, F. S. M. Ahmed, AM Abd El-Salam, M. A. Radi and M. SA Latif Vol. 18 ... 6-(N-Phthalyl)-L-Phe)aminocoumarin-3-carboxylic acid Page 4. 1206 A. M. El-Naggar, FS M. Ahmed, A. M. Abd El-Salam, M. A. Radi and M. SA Latif
Journal of Heterocyclic Chemistry, 1982
Sept-Oct 1982 Synthesis and Biological Activity of Some New Aminoacylcarbazole Derivatives. Part ... more Sept-Oct 1982 Synthesis and Biological Activity of Some New Aminoacylcarbazole Derivatives. Part I. AM El-Nagger* (1), FSM Ahmed, AM Abd El-Salam and MA El-Gazzar Chemistry Department, Faculty of Science, Al-Azhar University, Nasr-City, Cairo, AR Egypt Received ...
Journal of Plant Protection and Pathology, 2014
The lesser grain borer, Rhizopertha dominica Fabricius and the red flour beetle, Tribolium castan... more The lesser grain borer, Rhizopertha dominica Fabricius and the red flour beetle, Tribolium castaneum Herbst, are of the most insect species which cause the highest grain damage. Many chemical insecticides related to different groups used as protectants to stored products presented serious problems to human health and environment. To avoid these disadvantages, laboratory experiments were carried out to evaluate two materials namely, plant oil (Orange oil) and bioinsecticide, spinosad as stored wheat grain protectants against T. castaneum and R. dominica using two bioassays technique, mixing with medium and repellency at different exposure periods (72 h for mixing with feeding medium and 24 h for repellency). Results obtained revealed that the two tested materials, orange oil and spinosad had moderately action on the two tested insects either by mixing with medium or by repellent bioassay methods. Data cleared that the effect of the tested materials increased with the increasing of concentration and period of exposure especially with mixing bioassay. For repellent effect, the highest level of concentration had the most action on both T. castaneum and R. dominica. Except orange oil against T. castaneum the effect of materials tested decreased through 24 h of exposure. Spinosad showed nearly similar effect on the two tested insects while R. dominica was found to be more tolerant than T. castaneum with orange oil. Finally, our findings suggest that spinosad and orange oil may to be potential protectants against R. dominica and T. castaneum in stored wheat grain principally with mixing bioassay technique.
Glazing of ceramic surfaces is recommended in order to improve the physical properties of dental ... more Glazing of ceramic surfaces is recommended in order to improve the physical properties of dental ceramics. Conventional methods for the surface treatment of dental ceramic materials are not capable of creating a smooth surface without microcracks. The special radiation characteristics of both XeCl excimer and CO 2 lasers make them suitable to treat ceramic surfaces in order to produce a glazed surface. The aim of this study was to investigate the surface hardness of dental ceramics after their glazing with both XeCl excimer and CO 2 lasers. Materials and methods: 70 specimens were prepared from both dental porcelain and In-Ceram Alumina (35 specimens each). In hardness test, 25 specimens of each ceramic material were divided into 5 specimens that were conventionally glazed, 10 specimens were excimer laser glazed with two different energy densities, and 10 specimens were glazed with CO 2 laser at two different power settings. The surface hardness was measured in (Kg/mm 2 ) using Vickers microhardness tester. In addition, SEM and X-ray diffraction analysis of the changes in surface structure were conducted. The results were analyzed and compared using one way ANOVA and LSD statistical tests at a level of significance of 0.05% (p < 0.05). Results: Statistical analysis of the results revealed insignificant increase in hardness values of 2 watt CO 2 laser and 1.5 Joule/cm 2 excimer laser glazed porcelain specimens. Also, there was insignificant increase in hardness values of 2 and 10 watt CO 2 laser glazed In-Ceram Alumina specimens. 10 watt CO 2 and 6.2 Joule/cm 2 excimer lasers glazed porcelain specimens demonstrated significant increase in their hardness values. In-Ceram Alumina specimens showed significant increase in their hardness values glazed with both energy densities of excimer laser. Scanning electron microscope images declared an increase in homogeneity and smoothness of the surfaces of laser glazed specimens especially those glazed with higher power setting of CO 2 laser and higher energy density of excimer laser when compared to conventionally glazed specimens. X-ray diffraction charts of both the control and laser glazed specimens are nearly identical, indicating that laser glazing had no effect on their internal microstructure and it was just a surface treatment. Conclusion: laser glazing improves surface hardness and smoothness of ceramic surfaces without affecting their internal structures.
2006 ITI 4th International Conference on Information & Communications Technology, 2006
The underlying paper presents a comparison of the learnable evolution model LEM and Pattern Searc... more The underlying paper presents a comparison of the learnable evolution model LEM and Pattern Search PS techniques as a function optimizer. In contrast to conventional Darwinian type evolutionary computation algorithm that uses various forms of mutation and/or recombination ...
Archives Of Phytopathology And Plant Protection, 2010
... Raja et al. (200135. Raja, N, Albert, S, Ignacimuthu, S and Dorn, S. 2001. ... Previous work ... more ... Raja et al. (200135. Raja, N, Albert, S, Ignacimuthu, S and Dorn, S. 2001. ... Previous work attributed the activity of O. basilicum to cineol, eugenol, estragole and comphor (Obeng et al. 199726.Obeng-Ofori, D, Reichmuth, C, Bekele, AJ and Hassanali, A. 1997. ...
Chemischer Informationsdienst, 1984
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1983
Chemischer Informationsdienst, 1981
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1982
Il Farmaco; edizione scientifica, 1983
Synthesis of some new 2-(N-tosyl- or N-phthalylaminoacyl or free aminoacyl or N-tosyldipeptidyl- ... more Synthesis of some new 2-(N-tosyl- or N-phthalylaminoacyl or free aminoacyl or N-tosyldipeptidyl- or N-phthalyldipeptidyl)aminopyrazine derivatives (II-XXX) are described. All 2-(aminoacyl)aminopyrazines (XIV-XVIII) have been found to be biologically active against a number of microorganism.
International Journal of Peptide and Protein Research, 1982
Synthesis of a series of N-(2-acetylaminothiazole-5-sulphonyl) amino acids (II-VI) and some of th... more Synthesis of a series of N-(2-acetylaminothiazole-5-sulphonyl) amino acids (II-VI) and some of their corresponding methyl esters (VII-XI) is described. Coupling of N-tosyl-or N-phthalylamino acid with 2-amino-2-thiazoline using the DCC method furnishes 2-(N-tosyl- or N-phthalylamino acyl) amino-2-thiazoline (XII-XXI). Hydrazinolysis of 2-(N-Pht-L-Phe or N-Pht-L-Ala) amino-2-thiazoline in ethanol afforded 2-(L-Phe or L-Ala) amino-2-thiazoline (XXII and XXIII) respectively. Synthesis of the dipeptide 2-(N-Tos-L-Val-L-Leu) amino-2-thiazoline (XXIV) has been achieved employing the azide method. Sixteen thiazole- and thiazoline-amino acid derivatives were found to be active against a number of microorganisms.
International Journal of Modern Physics E, 1993
Within the experimental errors the interaction mean free paths of He-fragments produced by the co... more Within the experimental errors the interaction mean free paths of He-fragments produced by the collisions of 12C, 22Ne and 28Si nuclei at 4.5 A GeV/c in nuclear emulsion have been found to be independent of the He-multiplicity and the distance from the interaction point. Evidence for the multiplicity scaling of He-fragments is reported. The pseudo-rapidities for the shower particles accompanying the emission of the different multiplicities of the projectile He-fragments are also investigated. Each of these distributions is found to be satisfactorily fitted by a single Gaussian distribution. The temperature of the system emitting the shower particles T is also calculated and found to be independent of both the projectile and the multiplicities of the He-fragment.
ChemInform, 2001
Some Nucleophilic Reactions with 6-Benzoyl-2,3-dichloroquinoxaline: Synthesis of Tetrazolo[1,5-a]... more Some Nucleophilic Reactions with 6-Benzoyl-2,3-dichloroquinoxaline: Synthesis of Tetrazolo[1,5-a]quinoxaline, 2-Methylidene-1,3dithiolo[4,5-b]quinoxalines, Quinoxalino[2,3-b]quinoxalines and Pyrazolo[1',5':1,2]imidazolo[4,5-b]quinoxalines. -The starting compound (I) is subjected to some nucleophilic reagents to study the effect of the benzoyl group on the reactivity of the two chlorine atoms. -(EL-GABY, M. S. A.; EL-SHARIEF, A. M. SH.; AMMAR, Y. A.; MOHAMED, Y. A.; EL-SALAM, A.
Mathematical Problems in Engineering, 2013
ABSTRACT The problem of restricted three bodies is considered. The treatment is carried out withi... more ABSTRACT The problem of restricted three bodies is considered. The treatment is carried out within the framework of the post-Newtonian approximation. The primaries also are assumed to be radiant sources. The locations of the collinear points are computed. Series forms of these locations are obtained as new results. A Mathematica program is constructed so as to draw the locations of collinear points versus the whole range of the mass ratio taking into account the photo-gravitational effects and/or the relativistic corrections. Analyses of these figures are addressed.
Anzeiger für Schädlingskunde Pflanzenschutz Umweltschutz, 1995
Laboratory evaluation of Neem Azai-S and Margosan-O was carried out against the adult and larvae ... more Laboratory evaluation of Neem Azai-S and Margosan-O was carried out against the adult and larvae of .Liriomyza trifolii Burgess. The feeding deterrent activ-Ity of both compounds was significantly realized against the adults particularly at high concentrations which lasted for 5 days after treatment. Both formulations also deterred the females from laying eggs and the percentage of oviposition deterrent index (ODI) reached 80.7 and 52.6 for Neem Azal-S and Margosan-O (2%), respectively.
Journal of Heterocyclic Chemistry, 1981
... 0 HeteroCorpora tion XXVI). Page 2. 1204 AM El-Naggar, F. S. M. Ahmed, AM Abd El-Salam, M. A.... more ... 0 HeteroCorpora tion XXVI). Page 2. 1204 AM El-Naggar, F. S. M. Ahmed, AM Abd El-Salam, M. A. Radi and M. SA Latif Vol. 18 ... 6-(N-Phthalyl)-L-Phe)aminocoumarin-3-carboxylic acid Page 4. 1206 A. M. El-Naggar, FS M. Ahmed, A. M. Abd El-Salam, M. A. Radi and M. SA Latif
Journal of Heterocyclic Chemistry, 1982
Sept-Oct 1982 Synthesis and Biological Activity of Some New Aminoacylcarbazole Derivatives. Part ... more Sept-Oct 1982 Synthesis and Biological Activity of Some New Aminoacylcarbazole Derivatives. Part I. AM El-Nagger* (1), FSM Ahmed, AM Abd El-Salam and MA El-Gazzar Chemistry Department, Faculty of Science, Al-Azhar University, Nasr-City, Cairo, AR Egypt Received ...