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ISSN: 1840-4774    frecuency : 4   format : Electrónica

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Volume 7 Number 1 Year 1997

10 articles in this issue 

R. Grujic

Food allergy is a reaction of the body immune system to the presence of the proteins in the body introduced through food. Allergic reactions can affect the skin (hives), gastrointestinal organs (nausea, cramps, diarrhea), respiratory system (attenuation) ... see more

Pags. 7 - 26  

A. Porjazoska Kujundziski, D. Chamovska

Two different studies of the thermal aging of polyesters based on lactic and glycolic acids were compared. Thermal degradation of poly(L-lactic acid) (PLLA), poly(L-lactic acid-co-glycolic acid) (PLLGA) and poly(DL-lactic acid-co-glycolic acid) (PDLGA) wa... see more

Pags. 27 - 36  

A. Mele, K. Taraj, A. Korpa

Prrenjas clay mineral is found in southeast Albania and has a high content on bentonite. The influence of the sulphuric acid activation on the composition, structure and surface properties of Prrenjas clay mineral is investigated in this study by means of... see more

Pags. 37 - 44  

A. Grujic, M. Stijepovic, J. Stajic Trošic, J. Ilic, D. Nedeljkovic

In this study, design of lab scale device for determination of separation properties of membranes is presented and analyzed. Device operates with different gas pressure between chambers, whereby gas streams perpendicular to the membrane. Using appropriate... see more

Pags. 45 - 54  

A. Stevanovic, B. Jolovic

One of the most used renewable energy sources worldwide is geothermal energy. It represents the heat, originated by natural processes happen in the Earth interior. The hot springs phenomena are the most frequent natural manifestation of geothermal activit... see more

Pags. 55 - 78  

R. Sowa, S. Arabasz, E. Roga, A. Dziedzic, I. Dul, A. Kowal, M. Parlinska Wojtan

The investigated material is a corrosion-resistant, Cu precipitation hardened steel 17-4PH, which undergoes a macroscopic contraction, as a result of applying the following heat treatment: double solution treatment at 1028°C for 1 h (condition A), ageing ... see more

Pags. 79 - 90  

Z. Obrenovic, M. Gligoric, A. Došic, V. Damjanovic

Powders based on oxides and oxyhydroxides of aluminum, depending on their characteristics, have very diverse applications in various areas of the chemical industry. In recent years, obtaining powders with nano scale particle size, significantly expanding ... see more

Pags. 91 - 106  

T. Šoštaric, M. Petrovic, J. Milojkovic, J. Petrovic, M. Stanojevic, C. Lacnjevac, M. Stojanovic

In this paper, the removal of methylene blue (MB) from aqueous solution by biosorption onto apricot shellshas been investigated through batch experiments. Apricot shells were chosen as a locally available and abundant waste from fruit juice industry. Meth... see more

Pags. 107 - 114  

Lj. Ignjatovic, I. Sredovic Ignjatovic

The reduction of the greenhouse gas emissions and the assessment of renewable energy sources are among today’s most challenging tasks. In this context biofuels have emerged as promising alternatives. Successful commercialization and market acceptance of b... see more

Pags. 115 - 124  

G. Tadic, M. Gligoric, A. Došic, R. Grujic

Fly ash is useful for a variety of applications, because it is a plaster or silicate or aluminosilicate material which is in an isolated form and in the presence of water is combined with calcium hydroxide (from lime, portland cement or dust from furnaces... see more

Pags. 125 - 139