Biphenylsarean important class of organic compounds. Theyare importantin the field of natural products, polymersand the contemporary medical materials. Synthetic route cross-coupling (Suzukis) reaction, starting from benzenevia the iodoniumsaltto 4-nitro-4'-metilbiphenyl is chosen in this study. The resulting intermediates and final product of the ...

By Ljubica Vasiljević, Ivan Ćirić, Dragana Grujić

The aim of this paper was to develop and optimize the carvedilol tablets formulation using the full factorial design. The content of binder (PVP K30), content of disintegrant (crospovidone) and main compression force were used as the independent variables. Tablets were prepared by wet granulation. The percentage of released carvedilol from prepared...

By Predrag Sibinovic, Valentina Marinkovic, Radoslav Palic, Ivan Savic, Ivana Savic -Gajic, Dragan Milenovic, Rada Jankovic

This paper studies the effect of process parameters on the sorption characteristics of zeolite 4A. The observed process are related to the influence of crystallization temperature, crystallization time and influence concentrations of Na2O. In parallel with the examination of the impact of these parameters on the capacity of water sorption of zeolit...

By Mladen Janković, Anđelko Tanasijević, Radislav Filipović, Mitar Perušić

Treatment of groundwater is the most important part of the scope of protection of natural resources, because no biological and bacteriological water there is no life on the planet. Implemented through consideration of all the negative elements in the water, determine the percentage of their toxicity and finding the most appropriate method for their...

By Velimir Šćekić, Radoje Cvejić, Sava Smiljić

The purpose of the study is to predict the ballistic strength of hard ultra-high molecular weight polyethylene fiber/phenolicballistic composites by implementing the full factorial experimental design. When designing ballistic composites two major factors are the most important: the ballistic strength and the weight of the protection. The ultimate ...

By Dimko Dimeski, Vineta Srebrenkoska

The research described in this paper is directed towards the development and application of simultaneous potentiometric stripping analysis for the determination of heavy metals (lead, cadmium and zinc) in the soil of the northern part of the territory of Kosovo and Metohija. The experiments were carried out: I) the module solution (prepared from st...

By Ljiljana Babincev, Dejan Gurešić, Aleksandra Perić -Grujić, Ljubinka Rajaković

The separation ability and retention behaviour of normal phase TLC on silica with eight nonaqueous eluents, has been studied by measuring the retention constants of a series of synthesized benzimidazoles. The separation ability and retention behaviour are discussed in terms of the nature of the solute and eluent....

By Marijana Ačanski, Đura Vujić, Jovana Brkljača

Copper Oxyl Chloride 3Cu (OH)2∙CuCl2 is dual salt of copper, chlorine, oxygen and water. It is light green salt without smell. In water and organic solutions it is insoluble while it is easily solluble in acids. It is solluble in ammonia thus building complex units. It is more instable product since it is soluted after longer exposure to air a...

By Mustafa Burgić, Amir Fazlić, Mirela Burgić - Salihović

The researches in this paper are conducted on Au585Ag90Cu264Zn61 gold alloy for jewelry production by plasic processing. Jewelry manufacturing, in contemporary goldsmith industry, beside modern design and great appearance, also demands great mechanical and technical and technological properties. In ternary alloys of Au-Ag-Cu system, structural ...

By Radiša Perić, Zoran Karastojković, Zorica Kovačević, Dragoslav Gusković

Molasses, a byproduct of the sugar industry, presents multicomponent system of complex chemical composition and a suitable raw material for a range of food technology. The composition of molasses is conditioned by the sugar beet quality, applied beet processing technology and used aids. The main parts of molasses consists carbohydrates, primari...

By Rada Jevtić Mučibabić, Jasna Grbić, Bojana Filipčev, Olivera Šimurina, Tatjana Kuljanin