Synthesis and Nonlinear Optical Properties of some Stilbenes,Schiff's bases and Azodyes.

Research Abstract
تم فى هذا البحث تحضير بعض مشتقات الأستلبين -قواعد شيف وكذلكركبات الأزو ثم اجريت القياسات اللأزمة لاختبار هذة المواد كمواد ضوئية غير خطية.
Research Authors
Mark GoebIe,Ahmed El-Khawaga,and Rudiger Wortmann
Research Department
Department of chemistry
Research Journal
SYOO,6
Research Member
Ahmed Mahmoud Abdel-megeed Mostafa El-khawaga
Research Rank
3
Research Vol
Conference proceeding
Research Year
2005

2+2]Photocycloaddition of Morpholinoprop-2-ene nitriIe to Perinaphthenone

Research Abstract
تم فى هذا البحث دراسة الأضافة الحلقية 2+2 تحت تاثير الضوء الفوق بنفسجى بين مورفلين-2-ين نيتريل والبيرى نافثينون
Research Authors
Dietrich Dopp,Shaban K. and Ahmed Elkhawaga
Research Department
Department of chemistry
Research Journal
HeIv.Chim.Acta.,84,2001,3673.
Research Member
Ahmed Mahmoud Abdel-megeed Mostafa El-khawaga
Research Rank
1
Research Vol
84
Research Year
2001

Synthesis of Some Imidazopyrazolopyrimidimes, Pyrazolopyrimidopyrimidines and Pyrazolopyrimidothiazines

Research Abstract
تم فى هذا البحث تخليق مركبات بيرازولوبيريميدين واىميدازو بيرازولوبيريمدين وكذلك مركبات بيرازولوبيريميدوثيون وذلك باجراء بعض التفاعلات على مركب 3-امينو-2-فينيل بيرازول-4-كاربوكساميد
Research Authors
A. M. El-Khawaga, A. M. Kamal El-Dean, SH. M. Radwan and M.M. Ahmed.
Research Department
Department of chemistry
Research Journal
Bull. Korean Chem. Soc., 29, 1, 2008.
Research Member
Shaaban Mohamed Radwan Mohseb
Research Pages
6 pages
Research Rank
1
Research Vol
29,1
Research Year
2008

Synthesis of Some Imidazopyrazolopyrimidimes, Pyrazolopyrimidopyrimidines and Pyrazolopyrimidothiazines

Research Abstract
تم فى هذا البحث تخليق مركبات بيرازولوبيريميدين واىميدازو بيرازولوبيريمدين وكذلك مركبات بيرازولوبيريميدوثيون وذلك باجراء بعض التفاعلات على مركب 3-امينو-2-فينيل بيرازول-4-كاربوكساميد
Research Authors
A. M. El-Khawaga, A. M. Kamal El-Dean, SH. M. Radwan and M.M. Ahmed.
Research Department
Department of chemistry
Research Journal
Bull. Korean Chem. Soc., 29, 1, 2008.
Research Member
Adel Mohamed Kamal El-Din Saber
Research Pages
6 pages
Research Rank
1
Research Vol
29,1
Research Year
2008

Synthesis of Some Imidazopyrazolopyrimidimes, Pyrazolopyrimidopyrimidines and Pyrazolopyrimidothiazines

Research Abstract
تم فى هذا البحث تخليق مركبات بيرازولوبيريميدين واىميدازو بيرازولوبيريمدين وكذلك مركبات بيرازولوبيريميدوثيون وذلك باجراء بعض التفاعلات على مركب 3-امينو-2-فينيل بيرازول-4-كاربوكساميد
Research Authors
A. M. El-Khawaga, A. M. Kamal El-Dean, SH. M. Radwan and M.M. Ahmed.
Research Department
Department of chemistry
Research Journal
Bull. Korean Chem. Soc., 29, 1, 2008.
Research Member
Ahmed Mahmoud Abdel-megeed Mostafa El-khawaga
Research Pages
6 pages
Research Rank
1
Research Vol
29,1
Research Year
2008

Bacterial wilt and spot of tomato caused by Xanthomonas
vesicatoria and Ralstonia solanacearum in Egypt

Research Abstract
Tomato fruits and seed lots were screened for the presence of Xanthomonas vesicatoria and Ralstonia solanacearum. Yellow colonies of Xanthomonas vesicatoria and white colonies of Ralstonia solanacearum were consistently isolated on yeast extract-dextrose-calcium carbonate agar medium (YDC) from diseased fruits and seed samples. This was confirmed by isolation on semiselective medium such as Tween B for Xanthomonas and triphenyltetrazolium salt (TTC) medium for Ralstonia solanacearum followed by biochemical tests. The four isolates belonging to Xanthomonas vesicatoria and Ralstonia solanacearum were used to inoculate a local tomato variety. The isolates were found to cause yellowing and wilting of 2-weeks-old seedlings by 8–14 days after inoculation and by 4 weeks all plants hadwilted and completely died. Bacteria with the same characteristics as those inoculated were reisolated from the infected plants. Uninoculated plants remained healthy.
Research Authors
Mohamed H. Abd-Alla Æ Shymaa R. bashandy
Research Department
Botany and Microbiology Department
Research Journal
World J Microbiol Biotechnol
Research Member
Shymaa Ryhan Bashandy
Research Pages
pp.291–292
Research Rank
1
Research Vol
vol 24
Research Year
2008

Bacterial wilt and spot of tomato caused by Xanthomonas
vesicatoria and Ralstonia solanacearum in Egypt

Research Abstract
Tomato fruits and seed lots were screened for the presence of Xanthomonas vesicatoria and Ralstonia solanacearum. Yellow colonies of Xanthomonas vesicatoria and white colonies of Ralstonia solanacearum were consistently isolated on yeast extract-dextrose-calcium carbonate agar medium (YDC) from diseased fruits and seed samples. This was confirmed by isolation on semiselective medium such as Tween B for Xanthomonas and triphenyltetrazolium salt (TTC) medium for Ralstonia solanacearum followed by biochemical tests. The four isolates belonging to Xanthomonas vesicatoria and Ralstonia solanacearum were used to inoculate a local tomato variety. The isolates were found to cause yellowing and wilting of 2-weeks-old seedlings by 8–14 days after inoculation and by 4 weeks all plants hadwilted and completely died. Bacteria with the same characteristics as those inoculated were reisolated from the infected plants. Uninoculated plants remained healthy.
Research Authors
Mohamed H. Abd-Alla Æ Shymaa R. bashandy
Research Department
Botany and Microbiology Department
Research Journal
World J Microbiol Biotechnol
Research Member
Mohamed Hemida Abd-Alla
Research Pages
pp.291–292
Research Rank
1
Research Vol
vol 24
Research Year
2008

Occurrence and Hormonal Action of Ecdysone on Gametogenesis and Energy Utilization in the Leech Nephelopsis obscura

Research Authors
Kalarani,V
D.C.Reddy
H.R.Habibi
N.A. El-Shimy
R.W. Davies
Research Department
Zoology & Entomology Department
Research Journal
(Erpobdellidae). J. Exp. Zool. 273: 511-518
Research Member
Naser Abdullahtif Elshimy Sedieq
Research Rank
1
Research Year
1995
Subscribe to