Pages 1-12 Gar Alnabi, Ibrahim Mohamed Al-tayeb and Yahya Hasan Abstract Considering the growing negative environmental impacts all over the world and the deteriorating living standards in Sudan, this paper focuses on the authors’ contribution to an agricultural project that aims at participating in solving such problems in the study area. The study area, which is exploited by the
Pages 13-19 Rasheeth Ahmed Khan, Lakshmi Krishnamoorthy and Karthik S Abstract Water is the most environmentally benign inexpensive solvent, and therefore aqueous mediated organic reactions constitute the ideal green chemistry. We herein report an environment friendly Diels – Alder reaction of biologically active dihydropyrimidine (DHPM) as dienophile with glyoxime, dimethyl glyoxime and diaminoglyoxime as diene using water as solvent.
Pages 20-34 Hamid Hussein Eissa Abstract In this work we focused on the synthesis of new Azo-Schiff bases which were prepared by condensation of 3-formyl- 4-hydroxy phenylazo benzene with both 1,4-Bis (3-aminopropyl) piprazine, thiocarbohydazide respectively. The Schiff bases were analyzed by different spectral techniques (LC-MS, GC-MS, 1H-NMR, IR). The new Azo-Schiff Bases were studied for antibacterial activities against gram positive
Pages 35-49 Hamid Hussein Eissa Abstract This work focused on the synthesis of new azo Schiff bases which were prepared by condensation of 3-formyl- 4-hydroxy phenylazo benzene with both 1,3-diamino xylylene, 2,6-diamino Pyridine, 1,5-diamino- 2-methyl pentane respectively. The Schiff bases were checked by different spectral technique (LC-MS, GC-MS, 1H-NMR, IR). The new azo Schiff Bases were studied for antibacterial activities
Pages 50-57 Rashed Taleb Rasheed, Hadeel Salah Mansoor and Emad Yousif Abstract In this study nitration (electrophilicity) affinities were calculated at all reactive positions of O-phenylenediamine (OPDA) in aromatic substitutions (electrophilic). Structures of products were optimized at B3LYP/6-31G level of theory. This was used in order to determine the effect of substituent (nitrate ions) on the stability, reactivity and
Pages 58-69 Syed Noorul Hasan and W.M. Shewakh Abstract Internet and the World Wide Web have had a great development and have become an inseparable part of human life. Several studies have reported investigations regarding the use of visual displays. However, it is generally recognized that there is a need to find the levels of environmental factors and text-background
Pages 70-80 G. Rajyalakshmi and Md. Aslam Abstract Friction stir welding (FSW) is a novel solid state welding process for joining metallic alloys and has emerged as an alternative technology used in high strength alloys that are difficult to join with conventional techniques. The applications of FSW process are found in several industries such as aerospace, rail, automotive and
Pages 81-88 Hocine Laouer, Meriem El Kolli, Nacera Boulaacheb and Salah Akkal Abstract The essential oils from aerial parts of Anthemis pedunculata and Anthemis punctata (Asteraceae), obtained by hydrodistillation were analysed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS), and evaluated for in vitro antimicrobial activity. α-pinène was the major compound (25.8 %) in the essential oil of