Претраживање
Приказ резултата 861-870 од 894
Preliminary data on the crystal-chemical characteristics of beryl from Cer Mt. (Serbia)
(Scientific Annals, School of Geology, Aristotle University of Thessaloniki, 2010)
A beryl crystal from Cer Mt. (Serbia) studied in this paper was characterized by means of
XRPD and wet-chemical analyses. It has following unit cell dimensions: a = 9.2166(8) Å, c = 9.192(1) Å, V = 676.2(1) Å3 and ratio ...
Possible use of ground sulfur as petroleum industry byproduct in self-compacting concrete production
(Association for Promotion of Holistic Approach to Environment, 2018)
The quantities of component materials used for production of concrete are high on the
global scale, therefore alternative materials are experimented on, in order to replace the
natural ones. The possibility of using ...
Surface characterization of conductive lignocellulose composites
(Skopje : Society of chemists and technologists of Macedonia, 2016)
This paper is concerned with surface characterization of composite materials based on lignocellulosic (LC) matrix filled with electrolytic copper powder and chemically obtained silver powder. Volume fractions of metal ...
Koncentracija i biodostupnost toksičnih metala u zemljištu Srednjeg Banata (Vojvodina, Srbija)
(Visoka škola strukovnih studija, Beogradska Politehnika, 2017)
Stepen kontaminacije zemljišta toksičnim elementima definiše se u skladu sa važećim pravilnicima na teritoriji R. Srbije. Neki od definisanih elemenata su uvek toksični za biljke ili ljude (Pb, Cd, As, Hg, V, Sb, Be), a ...
Synthesis of calcium doped phosphate tungsten bronze
(Society of Physical Chemists of Serbia, 2018)
A study is presented of phase transitions of acid CaHPW12O40∙6H2O salt of 12-tungstophosphoric acid and characterized in the temperature range from room temperature to 1093 K. The structure and its phase transformations ...
Električna provodnost PMMA kompozita punjenih bakarnim prahom / Electrical conductivity of PMMA composites filled with copper powder
(Belgrade, Serbia : Serbian Society of Corrosion and Materials Protection UISKOZAM / Beograd, Srbija : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM, 2016)
Ovaj članak se bavi sintezom i karakterizacijom elektroprovodnih kompozitnih materijala toplim moldovanjem mešavina polimetilmetakrilata (PMMA) i elektrohemijski dobijenog bakarnog praha, kao i ispitivanjem uticaja morfologije ...
Possibilities of using sulfur for concrete production and its application
(Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS, 2015)
Two types of concrete will be shown in this paper. First type of concrete is sulfur concrete, where part of Portland cement was replaced with sulfur. Second type of concrete is selfcompacting concrete, where sulfur replaced ...
Chromium, Nickel, and Cobalt in soils of Srem and C. Banat
(Ecological Movement of Novi Sad, 2017)
This paper reports the concentration and sources of chromium, nickel and cobalt in soil samples from the Srem and Central Banat (Vojvodina, Serbia). Different methods were applied to identify the sources of elements and ...
Particle size distribution of iron ore sludge determined by using different methods and iron content by size class
(University of Banja Luka Faculty of Mining PrijedorMining Institute Belgrade Ltd, 2017)
This paper presents the results of the study of the particle size distribution of the limonite sludge that occurs as a hydro-cyclone overflow in the Omarska iron mine. The primary role of the precise
characterization of ...
Novel method for synthesis of biocompatible hydroxyapatite/passive oxide layer on modified titanium surface
(Belgrade, Serbia : Serbian Society of Corrosion and Materials Protection UISKOZAM / Beograd, Srbija : Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM, 2017)
Hydroxyapatite (HAp) is the most suitable biocompatible material for bone implant coatings. However, its brittleness is a major obstacle, and that is why, recently, research focused on creating composites. In this study, ...