CLIMATE CONDITIONS IN THE WORK ENVIRONMENT

SAŽETAK: U ovom radu prikazan je problem topline i kvalitete zraka radnog okoliša u odnosu prema zaštiti na radu. Pri tome se pošlo od zakonskih i podzakonskih propisa kao i kriterija koji su iskazani s pomoću standarda EN i ISO. Istaknuto je da pri obavljanju radnih zadataka nije samo značajno osigurati sigurne uvjete na strojevima i uređajima, već treba voditi računa o toplinskim čimbenicima i kvaliteti zraka kao značajnim ergonomskim čimbenicima, te racionalnijem pristupu u vezi uporabe energije za te namjene u određenom tehnološkom procesu.SUMMARY: The paper focuses on the issues of heat and air quality in the work environment, considered as being part of occupational safety. The starting points were drawn from relevant legal provisions and regulations and from the criteria set out in the EN and ISO standards. The key point argued in the paper is that, in performing a work task, safe operation of equipment and machinery is not the only prerequisite, but that heat and air quality should be regarded as equally important ergonomic factors. Furthermore, a rational approach to energy utilisation for these purposes in technological processes should be adopted

INVESTIGATION OF THE LEVEL OF ENVIRONMENTAL PROTECTION IN KARLOVAC CITY

Rad prikazuje stavove i ocjene studenata kao mlade populacije u gradu Karlovcu i njegovoj okolici u vezi onečišćenja životnog okoliša. Karlovačka županija ima dosta neriješenih ekoloških problema. Ti problemi su važni za studente karlovačkog veleučilišta kao buduće akademske građane koji će trebati rješavati ekološke probleme. U radu su istraživane ocjene studenata karlovačkog veleučilišta o životnom okolišu grada Karlovca. Putem ankete istraživala su se njihova mišljenja u vezi uzroka, posljedica, odgovornosti i načina rješavanja navedene problematike. Pomoću skale ocjena 1-5 rangirani su određeni ekološki problemi. Rezultati istraživanja pokazali su prioritetna pitanja iz ovog područja koja treba rješavati (stanje će ostati i dalje nepromijenjeno, posljedice na zdravlje ljudi zbog onečišćenja vode i tehničko-tehnoloških čimbenika kao i drugih izvora onečišćenja bit će na visokoj razini, te nedovoljna svijest i educiranost o ovim problemima svih građana i institucija sustava). Zbog toga ovo istraživanje treba biti u funkciji povećavanja i podizanja kvalitete života kao jedan stalni proces ostvarivanja i unapređivanja ljudskih i institucionalnih vrijednosti.SUMMARY: The paper describes opinions and assessments of students – as the younger population of the city of Karlovac and its surroundings – related to the pollution of their living environment. Karlovac County has several unsolved ecological problems. These problems are important for the students of the Polytechnic of Karlovac, as they are future academic citizens whose duty will be to solve ecological problems. The paper explores student assessments regarding Karlovac’s living environment. Their opinions about the causes, consequences, responsibilities and methods of solving the aforementioned problems are investigated by means of a student survey. Particular ecological problems are ranked on a range from 1 to 5. The research findings indicate some priority questions which need to be solved (the conditions will remain unchanged, consequences for human health due to water pollution and technical- technological factors as well as other pollution sources will remain at high level, and insufficient awareness and education about these problems of all citizens and institutions is still present). For this reason this investigation should help increase the overall quality of life, as a continuous process towards achieving and improving human and institutional values

Impact of anthropometric measurements on ergonomic driver posture and safety

Basic properties of vehicle interior are described. Car seat design, upholstery fabrics and passenger safety have been particularly emphasized. Textile fabrics as products providing comfort, safety and esthetics of the vehicle interiorwere dealt with. Safety belts, airbags and car seat covers were specially pointed out. Specific problems related to the safety of passengers, whose anthropometric measurements deviate from the average ones, were addressed

Construction-Related Occupational Injuries in Karlovac County

U radu se opisuju rezultati istraživanja ozljeda na radu u graditeljstvu Karlovačke županije za razdoblje od 1999. do 2002. godine. Obrađeni su i tabelarno prikazani te analizirani podaci o ozljedama prema raznim obilježjima i uzrocima (spol, dob, obrazovanje, strojevi, oprema, okoliš i dr.). Dani su rezultati istraživanja ozljeda nastalih zbog nepridržavanja osnovnih i posebnih pravila zaštite na radu. Prikazan je i pregled izgubljenog radnog vremena zbog nastalih ozljeda.Results obtained by the analysis of injuries that occurred during construction activities in Karlovac county in the period from 1999 to 2002 are described in the paper. Occupational injury data, classified according to various features and causes (gender, age, education level, machine, equipment, surroundings, etc.), are analyzed and presented in tabular form. Results obtained by the study of injuries generated due to non-compliance with basic and special occupational safety rules are given. An overview of working hours lost as a result of such injuries is also presented

ANALYSIS OF ASBESTOS PRODUCTION AND ITS EFFECTS ON HUMAN HEALTH

Dane su osnovne značajke azbesta i njegove prednosti u odnosu na druge zamjenske sirovine. Analizirane su posljedice na ljudsko zdravlje pri dodiru s azbestom te dane određene smjernice i odluke za njegovu uporabu. Unatoč visokim kvalitativnim značajkama, mnogostrukoj namjeni i relativno niskoj cijeni, prevladalo je njegovo negativno svojstvo i apelira se na zaustavljanje proizvodnje azbesta u svijetu. Mnoge razvijene zemlje su prestale upotrebljavati azbest upravo zbog njegove štetnosti na ljudsko zdravlje. Oboljeli od azbestoze i drugih neizlječivih bolesti uzrokovanih azbestom sve više zahtijevaju od vlada u zemljama koje još proizvode azbest visoke premije odštetnih zahtjeva i upozoravaju na materijalne posljedice izazvane uporabom azbesta.SUMMARY: Asbestos properties and its advantages in relation to other supplement raw materials are presented. Effects on human health when coming in contact with asbestos are analyzed and specific guidelines and decisions concerning its use are given. Despite excellent characteristics, multiple use and relatively low price, its harmfulness has brought about recommendations to stop the production of asbestos worldwide. Many developed countries have stopped using asbestos because of its detrimental effects to human health. Persons inflicted with asbestosis and other incurable diseases caused by asbestos demand high damage claims from the governments of the countries manufacturing asbestos

RESULTS OF APPLICATION OF BASIC WORKPLACE SAFETY RULES ON THE REDUCTION OF WORK-RELATED INJURIES

Cilj ovog istraživanja je analizirati i usporediti prosječnu godišnju stopu ozljeda na radu u tekstilnoj i građevinskoj industriji za razdoblje od 1997. do 2006. godine. Za istraživanje ozljeda na radu uzeti su podaci iz četiri tekstilne i dvije građevinske tvrtke. U statističkoj analizi primijenjeni su hi kvadrat test i aritmetička sredina za procjenu rezultata. Uspoređen je broj ozljeda u obje gospodarske grane po danima u tjednu, po mjesecima i prema dobi dana. Rezultati istraživanja ukazuju da kontinuirana primjena preventivnih mjera zaštite na radu u znatnijoj mjeri može utjecati na smanjenje ozljeda na radu i produktivnost rada.SUMMARY: The purpose of this investigation is to analyze and compare the average annual rate of occupational injuries in the textile and the civil engineering industries for the period from 1997 to 2006. In order to investigate these occupational injuries, data was gathered from four textile and two construction companies. The chi-square test and the arithmetic mean were used as statistical tools in assessing the results. The numbers of injuries in both industry branches were compared by the day of the week, by the month and according to the time of day. The research findings indicate that the continuous use of preventive measures of occupational safety can considerably affect the reduction of occupational injuries and labor productivity

Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling

Nanocomposites (HAp/iron oxide), made of hydroxyapatite (HAp) and ferrimagnetic iron oxide, were synthesized by high-energy ball milling a mixture consisting of iron oxide nanoparticles and the starting materials used for the HAp synthesis: calcium hydrogen phosphate anhydrous (CaHPO4), and calcium hydroxide (Ca(OH)2). Two HAp/iron oxide samples with the magnetic phase content of 12 and 30 wt.% were prepared and their microstructure, morphology and magnetic properties were analysed by X-ray diffraction and transmission electron microscopy. Furthermore, the measurement of particle size distribution was performed by laser scattering, and temperature/field dependence on magnetization was determined. X-ray diffraction data confirmed the formation of two-phased samples (HAp and spinel iron oxide) without the presence of any other parasite phase. The shape of particles was nearly spherical in both samples, ranging from only a few to several tens of nanometres in diameter. These particles formed agglomerates with the most common value of the number-based particle size distribution of 380 and 310 nm for the sample with 12 and 30 wt.% of iron oxide, respectively. Magnetization data showed that both HAp/iron oxide composites had superparamagnetic behaviour at room temperature. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved

In situ XRPD and DSC study of order-disorder phase transition in nanosize Li-ferrite

An order-disorder phase transition of nanosize Li-ferrite (Li0.50Fe2.50O4) was studied by DSC measurements and in situ XRPD technique. The phase transition temperature is found to be 762 °C (DSC) and (745±5) °C (XRPD).Physical chemistry 2004 : 7th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 21-23 September 200

Photocatalytic decolorisation of selected organic dyes by mesoporous tio2 thin films

The mesoporous TiO2 films were prepared by dip coating technique combined with the evaporation-induced self-assembly method using selected polymer templates. Influence of specific surface area, pore size, (nano)crystal structure and morphology of TiO2 films on the photocatalytic behaviour was investigated. In addition, particular process parameters were considered in decolorisation of organic dyes, such as: thickness of TiO2 films, initial concentration of selected pollutants and number of reaction cycles