السياسة الاقليمية التركية تجاه الخليج العربي 2002-2008

سوسيولوجية "ثوارت" "الربيع العربي (دراسة تحليلية لفعل الثورات العربية)

امن الخليج العربي بين الاحتكار الامريكي و رغبة المشاركة الاوربية

Preparation and Identification of some new Pyrazolopyrin derivatives and their Polymerizations study

               The new symmetry pyromellitdiimide [VII]_a-c,n  were synthesized by two-step reactions from the corresponding pyromellitic dianhydride . A new symmetrical amic acid [VI]_a-c,n was synthesized by the reaction of pyromellitic dianhydride with different heterocyclic amines in dry acetone . The second reaction step includes  intramolecular cyclization of amic acid in the presence of  sodium acetate -acetic anhydride system at 85⁰C. Structures  of  the synthesized compounds have been ascertained by their melting points , C.H.N analysis , UV-Vis, FTIR and ¹HNMR spectroscopy.

In this present work, [4,4`-(biphenyl-4,4`-diylbis(azan-1-yl-1-ylidene))bis(methan-1-yl-1-ylidene)bis(2-methoxyphenl)(A1),4,4`-(biphenyl-4,4`-diylbis(azan-1-yl-1-ylidene))bis(methan-1-yl-1-ylidene)diphenol(A2),1,1`-(biphenyl-4,4`-diylbis(azan-1-yl-1-ylidene))bis(methan-1-yl-1-ylidene) dinaphthalen-2-ol (A3)]C.S was prepared in 3.5% NaCl. Corrosion prevention at (293-323) K has been studied by using electrochemical measurements. It shows that the utilized inhibitors are of mixed type based on the polarization curves. The results indicated that the inhibition efficiency changes were used with a change according to the functional groups on the benzene ring and through the electrochemical technique. Temperature increases with corrosion current

Schiff bases, named after Hugo Schiff, are aldehyde- or ketone-like compounds in which the carbonyl group is replaced by imine or azomethine group. They are widely used for industrial purposes and also have a broad range of applications as antioxidants. An overview of antioxidant applications of Schiff bases and their complexes is discussed in this review. A brief history of the synthesis and reactivity of Schiff bases and their complexes is presented. Factors of antioxidants are illustrated and discussed. Copyright © 2016 John Wiley & Sons, Ltd.

     In this contribution, new derivatives of bicyclic fused rings with bridgehead nitrogen of 3-substituted imidazo/pyrimidine derivatives A1-A3 were synthesized by reacting 2-aminobenzothiazol, acetyl acetone, and different substituted aldehydes in a one-pot reaction. These compounds A1-A3 were then condensed with 4-bromobenzaldehyde and 4-(N,N-dimethylamino)benzaldehyde to form new chalcone derivatives A4-A9. Ring closure of these compounds A4-A9 with urea and malononitrile afforded new oxopyrimidine derivatives A10-A15 and cyanopyridine derivatives A16-A21, respectively. These compounds were characterized by FT-IR, ¹H NMR, and ¹³C NMR spectroscopy. The second part of this work included some of the i

The research aims at introducing international standards of internal auditing standards, including properties, performance, and special focus on the role of internal auditors abide by the standards of properties in achieving better accountability of the various actors in the Arab Bank and its branches in Jordan. The researcher to gather information on the questionnaire that was designed in accordance with the pivotal first measure the degree of compliance with the standards of properties and the second measures the following criteria for properties to achieve accountability is through the use of statistical methods to researcher concluded that 42.5% of the changes to achieve accountability back to the standard features and more standards

       The scientific heritage is an essential part of the civilization of nation , so Nations has focused on this aspect in the construction of civilization. So the Arab prosperous scientific achievements is no exception to this general rule in being an integral part of the composition of the Arab- Islamic civilization part ,and when we read in the Arab –Islamic medicine books ,we find the genius of the Arab and Muslims physicians and their own new methods of treatment they use music melodies in medication and treatment of patients