Journal of Engineering & Processing Management

31.12.2012. Original scientific paper

PEROXIDE TREATMENT IN EFFLORESCENCE PREVENTING

Efflorescence is a crystalline deposit of water soluble salts on the surface of ceramic masonry. In most cases, efflorescence can be removed by various cleaning methods depending on the chemistry of the crystalline deposit. But this, sometimes, may even worse the problem. Therefore, it would be most desirable to minimize or to prevent the effloresc...

By JOZEFITA MARKU, KOZETA VASO

31.12.2012. Professional paper

ANALYSIS OF CHANGES IN THE PARAMETERS OF THE MATURATION OF SREMSKI SAUSAGE WITH PREVIOSLY GIVEN TEHNICAL CHARACTERISTICS OF THE CHAMBER

Srem sausage belongs to the group of durable delicatessen products whose production is known since a long time ago. It is produced by selected recipe at precisely determined tehnical characteristics of the maturation chamber. The change of relative humidity, air temperature during the maturation and changes of pH values in the stuffing mass has bee...

By VANGELICA JOVANOVSKA, ACO KUZELOV

31.12.2012. Original scientific paper

INVESTIGATION OF THE EXTRACTION KINETICS OF MARIGOLD BY ETHANOL

Marigold (Calendula officinalis L.) defined the particle size was extracted using 40, 50 and 60% ethanol as a solvent by classical procedure of maceration. The kinetics of extraction by given ethanol concentrations in relation to drug:solvent = 1:10 was studied. The quantity of total substances (q0, g/100g drugs), and the quantity of the residue su...

By VLADIMIR DAMJANOVIĆ, VLADAN MIĆIĆ, ŽIKA LEPOJEVIĆ

31.12.2012. Professional paper

PROPOSED METHODOLOGY FOR IMPLEMENTING QUALITY METHODS AND TECHNIQUES IN MACEDONIAN COMPANIES

Providing quality in a business company is a matter related not only to the work done by individuals, but also with machines and the technology of the production processes as well. Therefore, it is necessary to provide statistical control in terms of estimating both the stability and the capability of production processes as well. However, control ...

By ELIZABETA MITREVA, OLIVER FILIPOVSKI

31.12.2012. Original scientific paper

SULFIDE OXIDATION IN TANNERY WASTEWATER WITH H2O2

High concentrations of sulfide in (cumulative) tannery wastewater are the direct cause of very high toxicity of this effluent. Therefore it is necessary to remove this pollutant by the oxidation process. Hydrogen-peroxide is the oxidizing agent, which increasingly acts as an "environment friendly" due to multiple uses for purification, detoxificati...

By LJILJANA VUKIĆ

31.12.2012. Original scientific paper

EXAMINATION OF AFLATOXINS IN MILK AND ACCURACY OF THE METHOD

In this study, we determined the accuracy Vicam method for the determination of aflatoxin B1 in feed and aflatoxin M1 in milk and dairy products by applying the method of standard addition. Analytical yield in all causes ranged from 93 to 95%, indicating a high accuracy of the method. The determination was made on aflatoxin B1 in (n ...

By JULIJANA TOMOVSKA, KATERINA BOJKOVSKA, VELINA STEFANOVSKA, NATALIJA TOMOVSKA

31.12.2012. Professional paper

A THERMODYNAMIC ASPECTS OF METALLIC SECONDARY RAW MATERIALS RECYCLING POSSIBILITY

Industrial products are made from different materials, therefore existing metallurgical plants are not always able to adequately process them. Knowing the thermodynamic parameters, possibility and degree of removal of contamininats from the base metal in the recycling process can be predicted. Such approach facilitates a decisions about products de...

By MIROSLAV SOKIĆ, ILIJA ILIĆ, ZVONKO GULIŠIJA, NADA ŠTRBAC

31.12.2012. Review article

WHEAT SAMPLES AND HEAVY METALS

Plants have an important role in circuit of heavy metals in nature. Heavy metals are input into food chains mainly through plants. One of the ways in which heavy metals are input into food products is through contaminated plants and animals used for their production. So, if the plants are cultivated on soil with high content of heavy metals then on...

By MILOŠ RAJKOVIĆ, MIRJANA STOJANOVIĆ, ĐORĐE GLAMOČLIJA, DRAGAN TOŠKOVIĆ, VIOLETA MILETIĆ, VIOLETA STEFANOVIĆ, ČASLAV LAČNJEVAC

31.12.2012. Original scientific paper

RETENTION AND LIPOPHILICITY OF ESTRADIOL DERIVATIVES IN NORMAL- AND REVERSED-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY

The retention behaviour and separation ability of some estradiol derivatives were studied by HPLC on silica and C-18 commercially available columns. The mobile phases used were: benzene-ethyl acetate, benzene-tetrahydrofuran, benzene-acetonitrile, isopropanol-water and tetrahydrofuran-water in various proportions. The results are discussed in terms...

By MARIJANA AČANSKI, ĐURA VUJIĆ, ZVONKO NJEŽIĆ

31.12.2012. Review article

THE DEVELOPMENT OF MODERN LOW TEMPERATURE FUEL CELLS

Classification of fuel cells is presented. Progress in low temperature fuel cells fueled by hydrogen, methanol and formic acid is discussed and the possible future use of fuel cells is indicated. Ethanol is a special fuel because it is available from renewable environmentally friendly sources and its oxidation product (CO2) can be transformed by ph...

By ANDRZEJ KOWAL, DRAGICA CHAMOVSKA, MILOVAN JOTANOVIC, MACIEJ KOPCZYK

31.12.2012. Professional paper

MEMBRANE PROCEDURES IN COMMUNAL WASTE LANDFILL LEACHATE TREATMENT

One of basic problems faced in practice of landfill waste treatment is a problem with landfill leachate. The intensity of their production, thus their quantity, depends on numerous factors: landfill age, waste types, microclimatic parameters and similar. This leachate must not be discharge directly into the environment without their previous collec...

By NEBOJŠA KNEŽEVIĆ, SINIŠA CUKUT, SAŠA DUNOVIĆ

31.12.2012. Professional paper

ASSESSMENT OF THE THERMAL CONDITION ELECTRIC POWER EQUIPMENT IN PROCESS INDUSTRY BY THE METHOD THERMOGRAPHY

During the operation of power equipment in the process industry failure can occur, which if not timely detected and corrected, could lead to major failures and disasters, and a time to unplanned downtime of entire production lines, which can lead to high costs, environmental damage and endanger the safety of workers is therefore within the program ...

By BOŽO ILIĆ, ŽIVOSLAV ADAMOVIĆ, BRANKO SAVIĆ, NENAD STANKOVIĆ

31.12.2012. Professional paper

EFFECT AIRCRAFT EXHAUST GASES ON SUM OF GREEN-HOUSE ATMOSPHERE GASES

Global Warming Potential – GWP is an agreed quantity which enables determination of an individual green-house gas effect on a global warming process. GWP quantity illustrates how a unit mass of an observed gas contributes to increase of global warming more than an unique mass of CO2, during certain period of time. The paper shows gases and su...

By BOŽIDARKA ARSENOVIĆ, ZORAN JANJUŠ, EMIL BANJAC

31.12.2012. Original scientific paper

INFLUENCE OF USED LUBRICANTS TO ENVIRONMENT

In the according with very intensive application of lubricant, the very large amounts of used lubricants which are harmful to the environment and human health are produced. In the European Union countries, the problem of used lubricants are permanently solved and many directives about this problem is setted (in the starting EEC Directive 75/439 and...

By ZORAN PETROVIĆ, GORAN TADIĆ, PERO DUGIĆ, VOJISLAV ALEKSIĆ, TATJANA BOTIĆ, MIRKO PETKOVIĆ

Vol 4 No 1 (2012)

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Authors in this issue:

Contents

PEROXIDE TREATMENT IN EFFLORESCENCE PREVENTING

ANALYSIS OF CHANGES IN THE PARAMETERS OF THE MATURATION OF SREMSKI SAUSAGE WITH PREVIOSLY GIVEN TEHNICAL CHARACTERISTICS OF THE CHAMBER

INVESTIGATION OF THE EXTRACTION KINETICS OF MARIGOLD BY ETHANOL

PROPOSED METHODOLOGY FOR IMPLEMENTING QUALITY METHODS AND TECHNIQUES IN MACEDONIAN COMPANIES

SULFIDE OXIDATION IN TANNERY WASTEWATER WITH H2O2

EXAMINATION OF AFLATOXINS IN MILK AND ACCURACY OF THE METHOD

A THERMODYNAMIC ASPECTS OF METALLIC SECONDARY RAW MATERIALS RECYCLING POSSIBILITY

WHEAT SAMPLES AND HEAVY METALS

RETENTION AND LIPOPHILICITY OF ESTRADIOL DERIVATIVES IN NORMAL- AND REVERSED-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY

THE DEVELOPMENT OF MODERN LOW TEMPERATURE FUEL CELLS

MEMBRANE PROCEDURES IN COMMUNAL WASTE LANDFILL LEACHATE TREATMENT

ASSESSMENT OF THE THERMAL CONDITION ELECTRIC POWER EQUIPMENT IN PROCESS INDUSTRY BY THE METHOD THERMOGRAPHY

EFFECT AIRCRAFT EXHAUST GASES ON SUM OF GREEN-HOUSE ATMOSPHERE GASES

INFLUENCE OF USED LUBRICANTS TO ENVIRONMENT

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Vol 15, Issue 1, 2023

Vol 14, Issue 2, 2022

Vol 14, Issue 1, 2022

Vol 13, Issue 2, 2021

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Vol 4 No 1 (2012)

All issues

Authors in this issue:

Contents

PEROXIDE TREATMENT IN EFFLORESCENCE PREVENTING

ANALYSIS OF CHANGES IN THE PARAMETERS OF THE MATURATION OF SREMSKI SAUSAGE WITH PREVIOSLY GIVEN TEHNICAL CHARACTERISTICS OF THE CHAMBER

INVESTIGATION OF THE EXTRACTION KINETICS OF MARIGOLD BY ETHANOL

PROPOSED METHODOLOGY FOR IMPLEMENTING QUALITY METHODS AND TECHNIQUES IN MACEDONIAN COMPANIES

SULFIDE OXIDATION IN TANNERY WASTEWATER WITH H2O2

EXAMINATION OF AFLATOXINS IN MILK AND ACCURACY OF THE METHOD

A THERMODYNAMIC ASPECTS OF METALLIC SECONDARY RAW MATERIALS RECYCLING POSSIBILITY

WHEAT SAMPLES AND HEAVY METALS

RETENTION AND LIPOPHILICITY OF ESTRADIOL DERIVATIVES IN NORMAL- AND REVERSED-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY

THE DEVELOPMENT OF MODERN LOW TEMPERATURE FUEL CELLS

MEMBRANE PROCEDURES IN COMMUNAL WASTE LANDFILL LEACHATE TREATMENT

ASSESSMENT OF THE THERMAL CONDITION ELECTRIC POWER EQUIPMENT IN PROCESS INDUSTRY BY THE METHOD THERMOGRAPHY

EFFECT AIRCRAFT EXHAUST GASES ON SUM OF GREEN-HOUSE ATMOSPHERE GASES

INFLUENCE OF USED LUBRICANTS TO ENVIRONMENT

Recent issues

View Archive

Vol 15, Issue 1, 2023

Vol 14, Issue 2, 2022

Vol 14, Issue 1, 2022

Vol 13, Issue 2, 2021