Partial molar volumes of amino acids in aqueous solutions of magnesium chloride

The lack of a deep molecular picture of the interactions which govern the biochemistry of vital processes is still one critical issue in this area, which limits the development of pharmaceutical solutions for diseases induced by biochemical disorders [1] and the improvement of the efficiency of biotechnological processes [2]. In this concern the study of protein-electrolyte interactions is of most importance. Hydrophobic, charged atomic groups and ions are components of almost every biologically important systems, but proteins are so complex that is useful to investigate the interaction of model compounds such as amino acids [3]. In the last decade much attention has been devoted to the partial molar volumes and hydration properties of amino acids in electrolyte solutions, which are the subject of this study

Kakvoća vode na brodovima

Zbog sve većeg razvoja nautičkog turizma, kakvoća voda za piće na brodovima ima sve veću ulogu. Cilj ovog rada bio je analizirati rezultate kakvoće vode na različitim vrstama brodova u Primorsko-goranskoj županiji, u petnaestogodišnjem razdoblju od 2002. do 2016. godine. Kakvoća vode ispitana je u laboratorijima Zdravstveno-ekološkog odjela, Nastavnog zavoda za javno zdravstvo Primorsko-goranske županije. Ukupno je analizirano 478 uzoraka, na osnovne mikrobiološke i fizikalno-kemijske pokazatelje, pri čemu su korištene standardne ISO metode. Rezultati ispitivanja kakvoće vode pokazali su da postoji statistički značajna razlika po godinama, mjesecima, sezonama kao vrsti subjekta koji dostavlja vodu na analizu. Svi mikrobiološki pokazatelji, izuzev ukupnih koliformnih bakterija, imaju silazan trend. Broj izraslih kolonija (UBB) i P. aeruginosa imaju najveći porast u listopadu, kao i indikatori fekalnog onečišćenja, koji se u povišenim koncentracijama pojavljuju i tijekom ljeta. Uzorci dostavljeni od strane brodogradilišta bolje su kakvoće od onih dostavljenih od strane brodarskih agencija. Mjerenje koncentracije rezidualnog klora, te ispitivanje pokazatelja Legionella potrebno je rutinski ispitivati.Due to the increasing development of nautical tourism, the quality of drinking water on boats has an increasing role. The aim of this paper was to analyze the water quality results on different types of vessels in the Primorje-Gorski Kotar County, in the fifteen-year period from 2002. to 2016. The quality of water was tested in the laboratories of the Health-Ecological Department of the Primary-Gorski Kotar County Public Health Institute. A total of 478 samples were analyzed on basic microbiological and physico-chemical indicators, using standard ISO methods. The results of water quality testing showed that there was a statistically significant difference between years, months, seasons as the type of subject that supplies the water to the analysis. All microbiological indicators, with the exception of total coliform bacteria, have a downward trend. The number of colonies (UBB) and P. aeruginosa has the highest increase in October, as well as indicators of fecal contamination, which appear in elevated concentrations during the summer. Samples delivered by shipyards are better quality than those delivered by shipping agencies. Measurement of the residual chlorine concentration and Legionella test should be routinely investigated

Kakvoća vode na brodovima

Zbog sve većeg razvoja nautičkog turizma, kakvoća voda za piće na brodovima ima sve veću ulogu. Cilj ovog rada bio je analizirati rezultate kakvoće vode na različitim vrstama brodova u Primorsko-goranskoj županiji, u petnaestogodišnjem razdoblju od 2002. do 2016. godine. Kakvoća vode ispitana je u laboratorijima Zdravstveno-ekološkog odjela, Nastavnog zavoda za javno zdravstvo Primorsko-goranske županije. Ukupno je analizirano 478 uzoraka, na osnovne mikrobiološke i fizikalno-kemijske pokazatelje, pri čemu su korištene standardne ISO metode. Rezultati ispitivanja kakvoće vode pokazali su da postoji statistički značajna razlika po godinama, mjesecima, sezonama kao vrsti subjekta koji dostavlja vodu na analizu. Svi mikrobiološki pokazatelji, izuzev ukupnih koliformnih bakterija, imaju silazan trend. Broj izraslih kolonija (UBB) i P. aeruginosa imaju najveći porast u listopadu, kao i indikatori fekalnog onečišćenja, koji se u povišenim koncentracijama pojavljuju i tijekom ljeta. Uzorci dostavljeni od strane brodogradilišta bolje su kakvoće od onih dostavljenih od strane brodarskih agencija. Mjerenje koncentracije rezidualnog klora, te ispitivanje pokazatelja Legionella potrebno je rutinski ispitivati.Due to the increasing development of nautical tourism, the quality of drinking water on boats has an increasing role. The aim of this paper was to analyze the water quality results on different types of vessels in the Primorje-Gorski Kotar County, in the fifteen-year period from 2002. to 2016. The quality of water was tested in the laboratories of the Health-Ecological Department of the Primary-Gorski Kotar County Public Health Institute. A total of 478 samples were analyzed on basic microbiological and physico-chemical indicators, using standard ISO methods. The results of water quality testing showed that there was a statistically significant difference between years, months, seasons as the type of subject that supplies the water to the analysis. All microbiological indicators, with the exception of total coliform bacteria, have a downward trend. The number of colonies (UBB) and P. aeruginosa has the highest increase in October, as well as indicators of fecal contamination, which appear in elevated concentrations during the summer. Samples delivered by shipyards are better quality than those delivered by shipping agencies. Measurement of the residual chlorine concentration and Legionella test should be routinely investigated

Kakvoća vode na brodovima

Zbog sve većeg razvoja nautičkog turizma, kakvoća voda za piće na brodovima ima sve veću ulogu. Cilj ovog rada bio je analizirati rezultate kakvoće vode na različitim vrstama brodova u Primorsko-goranskoj županiji, u petnaestogodišnjem razdoblju od 2002. do 2016. godine. Kakvoća vode ispitana je u laboratorijima Zdravstveno-ekološkog odjela, Nastavnog zavoda za javno zdravstvo Primorsko-goranske županije. Ukupno je analizirano 478 uzoraka, na osnovne mikrobiološke i fizikalno-kemijske pokazatelje, pri čemu su korištene standardne ISO metode. Rezultati ispitivanja kakvoće vode pokazali su da postoji statistički značajna razlika po godinama, mjesecima, sezonama kao vrsti subjekta koji dostavlja vodu na analizu. Svi mikrobiološki pokazatelji, izuzev ukupnih koliformnih bakterija, imaju silazan trend. Broj izraslih kolonija (UBB) i P. aeruginosa imaju najveći porast u listopadu, kao i indikatori fekalnog onečišćenja, koji se u povišenim koncentracijama pojavljuju i tijekom ljeta. Uzorci dostavljeni od strane brodogradilišta bolje su kakvoće od onih dostavljenih od strane brodarskih agencija. Mjerenje koncentracije rezidualnog klora, te ispitivanje pokazatelja Legionella potrebno je rutinski ispitivati.Due to the increasing development of nautical tourism, the quality of drinking water on boats has an increasing role. The aim of this paper was to analyze the water quality results on different types of vessels in the Primorje-Gorski Kotar County, in the fifteen-year period from 2002. to 2016. The quality of water was tested in the laboratories of the Health-Ecological Department of the Primary-Gorski Kotar County Public Health Institute. A total of 478 samples were analyzed on basic microbiological and physico-chemical indicators, using standard ISO methods. The results of water quality testing showed that there was a statistically significant difference between years, months, seasons as the type of subject that supplies the water to the analysis. All microbiological indicators, with the exception of total coliform bacteria, have a downward trend. The number of colonies (UBB) and P. aeruginosa has the highest increase in October, as well as indicators of fecal contamination, which appear in elevated concentrations during the summer. Samples delivered by shipyards are better quality than those delivered by shipping agencies. Measurement of the residual chlorine concentration and Legionella test should be routinely investigated

Volumetric interactions of a series of α-amino acids in aqueous magnesium chloride solutions at 278.15, 288.15, 298.15, and 308.15 K

In this work, the partial molar volumes of glycine, l-alanine, l-valine, l-serine, and l-threonine in aqueous solutions of magnesium chloride at 0.0, 0.1, 0.3, 0.7, and 1.0 molal are addressed between 278.15 and 308.15 K. Volumes of transfer were obtained, following the rank serine > glycine a parts per thousand threonine > alanine > valine. Differently, the hydration numbers follow the sequence serine > valine > alanine > threonine > glycine, and dehydration of the amino acids is observed, rising the temperature or salt molality. The data suggest that interactions are mainly pairwise, between the ions and charged/hydrophilic groups of the amino acids. Within the Friedman and Krishnan formalism, a group-contribution scheme has been successfully applied to the pairwise volumetric interaction coefficient. Finally, the dehydration effect of MgCl2 on glycine, alanine, and serine has been predicted applying empirical correlations developed before, showing satisfactory results

Water for all : proceedings 8th International Conference Water for all

The 8th International Conference WATER FOR ALL was held on the 21th and 22th March 2019 in Osijek, on Faculty of Civil Engineering and Architecture Osijek on the occasion of World Water Day and with the aim of gathering and exchanging experiences of scientists and experts in the field of water management, environmental protection and preservation of water resources. The Conference included plenary lectures, oral lectures, poster presentations, and the presentations of sponsoring companies. 8th International Conference WATER FOR ALL was organized by the Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek and Faculty of Civil Engineering and Architecture Osijek, Croatian Chamber of Economy, Croatian Water - VGO, Croatian Chamber of Health Professionals, Croatian Water Pollution Control Society, Faculty of Agrobiotechnical Sciences Osijek, Department of Biology of the Josip Juraj Strossmayer University of Osijek, Department of Chemistry of the Josip Juraj Strossmayer University of Osijek, University of Bihać, Faculty of Agriculture and Food Technology University of Mostar, Faculty of Health Studies University of Sarajevo, Faculty of Food Technology and Biotechnology University of Zagreb, Faculty of Technology University of Tuzla, Faculty of Technology and Metallurgy University of Skopje, Faculty of Health Sciences University of Ljubljana, Nature Park “Kopački rit”, Public Institution for nature protection in Osijek- Baranja County, Public Health Institute of the Osijek-Baranja County, Health Center Osijek, Vodovod-Osijek d.o.o. and Alumni Association of former students and friends of the Faculty of Food Technology Osijek - TehnOS. The international co- organizers of the Conference were International Federation of Environmental Health (IFEH), European Hygienic Engineering & Design Group (EHEDG) and Danube Parks. The theme of World Water Day 2019 and 8th International Conference WATER FOR ALL was "Water for all – Leaving no one behind!". At the 8th International Conference WATER FOR ALL participated 359 authors from 10 countries (Croatia, Bosnia and Herzegovina, Serbia, Montenegro, Slovenia, Republic of Kosovo, Turkey, Norway, Mexico and Brazil) with presentation of in total 112 paper, from which of them 41 were presented orally, and were presented 71 as poster presentation. Abstract of the mentioned papers were published in the Book of Abstracts of the 8th International Conference WATER FOR ALL. The Scientific Committee of 8th International Conference WATER FOR ALL received 35 full papers for publication and 17 of them became the part of the this Proceedings, while 18 papers were accepted and publicated in following international scientific journals: Electronic Journal of the Faculty of Civil Engineering Osijek - e-GFOS, Croatian Journal of Food Science and Technology, Technologica Acta, The Holistic Approach to Environment and Environmental Engineering - Inženjerstvo Okoliša. Special contributions to the quality of this Proceedings of the 8th International Conference WATER FOR ALL were given by 49 reviewers, mostly university professors and professionals, from 10 countries and over twenty international universities, faculties and institutions. On behalf of the Organizing and Scientific Committee of the 8th International Conference WATER FOR ALL we cordially thank all the authors, participants, reviewers and sponsors for their contribution to the quality of the 8th International Conference WATER FOR ALL