Occupational Diseases, Working Ability and Employment Status in the Working Population of Croatia

The paper gives insight into the working ability and employment status of workers with recognized occupational diseases in Croatia. The analysis based on working ability data from 212 workers shows that 12 (5.5%) workers have general disability for work, 75 (35.5%) occupational disability for work, 98 (46.4%) danger of disability onset, 13 (6%) no disability and 14 (6.5%) are sent for further medical treatment. The highest frequency of occupational diseases is in the group of workers with 41–50 years of age, in the category of 20–24 exposure years. Official data imply that the incidence rate of occupational diseases in Croatia is 4 times lower than in European Union. Such a low incidence rate derives from problems in the system of healthcare and health insurance, and also from problems in the system of monitoring and registering of occupational diseases

Selection and Improvement of Antibiotic Activity in Streptomyces Erythreus E—29 Strain after the Action of Mutagenic Agents

Streptomyces erythreus E-29 strain was selected by treatment with ultraviolet irradiation, ethylenimiitne and 1,4-diepo xyfoutan e as mutagenic agents. The most effective in improving of the erythromycin yields was ethylenimine in concentration of 0.1 per cent. After 60 min. of treatment with the mentioned mutagen a new strain EE-17 was isolated. On fermentation this strain showed 106 per cent higher yields than the initial one. By ultraviolet irradiation of the strain, 2.06 per cent plus variants were induced. The best isolate was 52 per cent more active in antibiotic activity than the initial strain. As a result of 1,4-diepoxybutane treatment of strain E-29 the maximum frequency of plus variants was 2.66 per cent. It has turned out that at this concentration of mutagen, the frequency of minus variants (33 per cent) greatly exceeded the frequency of the same variants in comparison to the ultraviolet irradiation and ethylenimine treatment. The best variant was 26 per cent more active than the initial strain

Selection and Improvement of Antibiotic Activity in Streptomyces Erythreus E—29 Strain after the Action of Mutagenic Agents

Streptomyces erythreus E-29 strain was selected by treatment with ultraviolet irradiation, ethylenimiitne and 1,4-diepo xyfoutan e as mutagenic agents. The most effective in improving of the erythromycin yields was ethylenimine in concentration of 0.1 per cent. After 60 min. of treatment with the mentioned mutagen a new strain EE-17 was isolated. On fermentation this strain showed 106 per cent higher yields than the initial one. By ultraviolet irradiation of the strain, 2.06 per cent plus variants were induced. The best isolate was 52 per cent more active in antibiotic activity than the initial strain. As a result of 1,4-diepoxybutane treatment of strain E-29 the maximum frequency of plus variants was 2.66 per cent. It has turned out that at this concentration of mutagen, the frequency of minus variants (33 per cent) greatly exceeded the frequency of the same variants in comparison to the ultraviolet irradiation and ethylenimine treatment. The best variant was 26 per cent more active than the initial strain

The Impact of Quality Management Purchasing Practices on Purchasing Performance in Transitional Economies

This study examines the nature of relationships between quality management practices in purchasing and purchasing-related organisational performance within ISO 9001:2008 environment in transitional economies. The study was based on managers’ responses from 90 ISO 9001:2008 certified large organisations from Serbia. The findings show that quality management practices in purchasing positively affect purchasing performance. Further, purchasing performance is found to be a significant mediator between quality management practices and time-based performance. However, despite the overall good predictive model power, the explained variance on time-based performance is quite low. Thus, the effects on time-based performance are arguable. PLS-SEM Importance-performance analysis reveals that purchasing performance, cross-functional coordination and personnel management have relatively high performance, while benchmarking has the lowest value of the performance index. Consequently, the implementation of quality management practices in purchasing along with ISO 9001:2008 might be a part of a good strategic choice for transitional organisations to overcome troublesome transitional times. Still, the discrepancies between this study and the results from developed economies yield potential improvement areas on how organisations in transitional economies should manage purchasing practices

Influence of Occupational Stress on Organisational Performance

The effective occupational health and safety management system is aimed to reduce risks of injuries and occupational ill health in the organisation. The relation between occupational health and safety management and organisational performance has already been researched and established by some researchers. By creating safe and healthy environment, top management invests in optimal business conditions with agile work power that can fully contribute to achieving company goals, but the expected results and achievement of set goals may vary depending on stress-related working climate. The influence of stress factor as mediator between occupational health and safety management and organisational performance was a subject of research that is shown in this paper. A survey concerning constructs related to the topic was carried out in Serbia, and the results of the survey were analysed using structural equation modeling (SEM). The results of the research proved that occupational health and safety management system has a direct impact on employees\u27 stress, and their stress has a significant, mediating, influence on organisational OHS performance

Akumulacija suve materije ozime pšenice i ječma u različitim rokovima setve

Dry matter accumulation is one of the best estimates for crop reaction to the effect of genotype or environmental factors. However, there is a lack of information about comparative crop growth between wheat and barley under conditions of the Pannonian climate. The objectives of this work were to study and compare the patterns of biomass accumulation in wheat and barley, and identify the role of the logistic curve parameters in the determination of the final biomass. Therefore, field trials with two two-row winter barley and two winter wheat cultivars were carried out in two successive growing seasons with four sowing dates. Results from our study showed that grain yield and crop biomass were under significant influence of cultivar and sowing date in both growing seasons. The highest grain yield and crop biomass at maturity were obtained with early sowing - first and second sowing date. There was a significant positive relationship between the crop biomass and grain yield in both species. Barley and wheat had similar strategies for biomass determination. Crop biomass at maturity was positively associated with the duration of growing phases, while the relationship with weighted mean absolute growth rate was negative. Early sowing enables prolongation in duration of different phases of crop biomass accumulation, leading to significant biomass and grain yield increase.Akumulacija suve materije je jedan od najboljih pokazatelja reakcije useva na uticaj genotipa i faktora sredine. Međutim, nedostaju uporedni podaci o rastu pšenice i ječma u uslovima Panonske nizije. Cilj ovog istraživanja je bilo ispitivanje i poređenje akumulacije suve materije pšenice i ječma i utvrđivanja značaja parametara logističke krive u formiranju ukupne biomase. Ogled sa dve sorte dvoredog ozimog ječma i dve sorte ozime pšenice je sejan dve sezone u četiri roka setve. Rezultati ovog ispitivanja ukazuju da je prinos zrna i suve materije bio pod značajnim uticajem roka setve i genotipa u obe sezone. Setva u prvom i drugom roku dala je najveći prinos zrna i biomase. Utvrđena je pozitvna veza između biomase useva i prinosa zrna kod obe vrste. Pšenica i ječam su imali slične tendencije u nakupljanju suve materije. Biomasa u zrelosti je bila u pozitivnoj vezi sa dužinom vegetacionog perioda, a u negativnoj vezi sa procenjenom srednjom apsolutnom brzinom rasta. Rana setva omogućava produženje trajanja različitih faza akumulacije suve materije, dovodeći do značajnog povećanja prinosa i suve materije kod ječma i pšenice

RELEVANCE OF THE TYPES AND THE STATISTICAL PROPERTIES OF FEATURES IN THE RECOGNITION OF BASIC EMOTIONS IN SPEECH

Due to the advance of speech technologies and their increasing usage in various applications, automatic recognition of emotions in speech represents one of the emerging fields in human-computer interaction. This paper deals with several topics related to automatic emotional speech recognition, most notably with the improvement of recognition accuracy by lowering the dimensionality of the feature space and evaluation of the relevance of particular feature types. The research is focused on the classification of emotional speech into five basic emotional classes (anger, joy, fear, sadness and neutral speech) using a recorded corpus of emotional speech in Serbian

Colorectal anastomosis dehiscence following radical surgical operation for rectal carcinoma

Background/Aim. Colorectal cancer (CRC) is one of the biggest health problems of modern humanity, especially in highly developed countries. In Serbia about 3,200 patients suffer from CRC, out of whom about 1,100 patients suffer from rectal cancer (RC), while about 2,100 patients suffer from other colon segments cancer. The aim of the study was to show the incidence genesis of one of the possible early postoperative complications regarding dehiscence of the colorectal anastomosis (CRA) with a group of patients suffering from RC and operated by using sphincter-saving procedures, in the period from 1993 to 2007, and then to compare the incidence genesis of these complications with those in the published series of the reporting colorectal institutions. Methods. The research included 242 patients radically operated on for RC in a 15-year period using some of sphincter-saving procedures following by a careful analysis of the symptoms of subclinical dehyscencias not solved with the reintervention as well as of the clinically evidented dehyscencias mostly solved by reoperation. Results. With 22 (9.1%) patients in the first 10 postoperative days there were early postoperative symptoms of CRA dehiscence. In 6 (2.47%) of the patients there were subclinical signs of raised body temperature, less quantity of feces content, and after the conservative treatment they ended in spontaneous process of rehabilitation. In 16 (6.61%) patients there was clinically evidented anastomosis dehiscence followed by abundant drainage of feces content, signs of local peritonitis, pelvic sepsis, so we had to undertake surgical intervention. Conclusion. Comparing the results of a few tenths of published studies with our results we proved that performing and operative technique of colorectal anastomosis in the patients suffered and radically surgically treated for RC, is quite adequate with the operative technique in reporting world institutions that are engaged in surgical treatment of RC