University of Split Repository
Not a member yet
29028 research outputs found
Sort by
Analysis of the Influence of the Interlayer on the Behaviour of Laminated Glass Beams Exposed to Bending : Master's Thesis
No full textOvaj diplomski rad analizira utjecaj izbora međusloja kod laminiranih staklenih nosača izloženih savijanju. U prvom dijelu rada opisani su različiti međuslojevi koji se koriste kod ovakvih nosača te navedene osnovne materijalne karakteristike potrebne za proračun. Proveden je analitički proračun laminiranih nosača izloženih savijanju prema prEN16612, te izvršena numerička analiza laminiranih nosača izloženih savijanju (fourpoint bending test) varirajući međuslojeve. Na kraju su dobiveni analitički i numerički rezultati uspoređeni s eksperimentalnim istraživanjima objavljenim u literaturi, te formulirani zaključci.This thesis analyses the influence of the interlayer choice in laminated glass beams exposed to bending. The first part of the paper describes the different interlayers used in such supports and lists the basic material characteristics required for the calculation. Analytical calculation of laminated beams exposed to bending according to prEN16612 was performed, and numerical analysis of laminated beams exposed to bending (fourpoint bending test) was performed, varying the interlayers. Finally, analytical and numerical results were obtained compared with experimental research published in the literature, and conclusions were formulated
CHALLENGES WITH MANAGING AND INHERITING A FAMILY BUSINESS
No full textU ovom radu obrađeni su pojmovi poduzetnik i poduzetništvo te konkretnije obiteljsko poduzetništvo i izazovi koji se pojavljuju u takvom poslovanju. Obiteljsko poduzetništvo predstavlja značajan segment globalne ekonomije, obuhvaća razne sektore i doprinosi održivom razvoju. Ono posjeduje brojne prednosti poput generacijske stabilnosti, zadržavanja obiteljske tradicije, visoke razine predanosti te međuljudske povezanosti. Kao i svako poduzeće, osim prednosti, ima i svoje mane, posebice u kontekstu upravljanja i nasljeđivanja. Cilj ovoga rada bio je istražiti specifične probleme koje obiteljska poduzeća susreću. Analizirana je obiteljska dinamika u poslovanju, donošenje važnih odluka koje utječu na obitelj, proces nasljeđivanja i upravljanja poslovanjem. Rad, osim teorijskih razmatranja, sadrži i analizu istinitih poslovnih primjera koji su se koristili kako bi se bolje prikazale poteškoće koje se mogu pojaviti u bilo kojem stadiju poslovanja te smjernice za njihovo prevladavanje. Zaključno, ovim radom prikazana je kompleksnost poduzetništva i obiteljskog poslovanja te pridonosi boljem razumijevanju poduzetnika. Kroz analizu i primjere, rad nudi koristan okvir za razmatranje „šire slike“ obiteljskih poduzeća, čime se potiče njihov razvoj i uspjeh na tržištu.This paper addresses the concepts of entrepreneur and entrepreneurship, more specifically family entrepreneurship and the challenges that arise in such businesses. Family entrepreneurship represents a significant segment of the global economy, encompassing various sectors and contributing to sustainable development. It possesses numerous advantages such as generational stability, retention of family tradition, a high level of commitment, and interpersonal connections. Like any enterprise, in addition to advantages, it also has its flaws, especially in the context of management and succession. The aim of this paper was to explore the specific problems faced by family businesses. The family dynamics in business, decision-making as a family, and the process of succession and business management were analyzed. Besides theoretical considerations, the paper includes an analysis of real business examples used to better illustrate the challenges that can arise at any stage of business and provide guidelines for overcoming them. In conclusion, this paper demonstrates the complexity of entrepreneurship and family business and contributes to a better understanding of entrepreneurs. Through analysis and examples, the paper offers a useful framework for considering the "bigger picture" of family businesses, thereby encouraging their development and success in the market
Impact of different drying methods on the stability of anthocyanins from cultivated blueberry (VACCINIUM CORYMBOSUM L) : diploma thesis
No full textKultivirana borovnica (Vaccinium corymbosum L.) smatra se jednim od najznačajnijih komercijalnih predstavnika roda Vaccinium. U Hrvatsku je stigla iz Sjedinjenih Američkih Država i smatra se introduciranom vrstom. Kultivirana borovnica ima dobre nutritivne značajke (dobar sklad makro i mikronutrijenata), ali i senzorske karakteristike (ugodna boja, aroma i okus). Prisutnost biološki aktivnih komponenti, prije svega fenolnih spojeva, daje dodatnu vrijednost ovoj namirnici. S obzirom na brojnost i zdravstveni aspekt, treba istaknuti antocijane kao najbitnije predstavnike fenolnih spojeva prisutnih u kultiviranoj borovnici. U ovom radu ispitan je utjecaj različitih postupaka sušenja: liofilizacija uz postepeno smrzavanje (– 80 C) i naglo smrzavanje (- 196 C), vakuum sušenje i konvekcijsko sušenje na stabilnost fenolnih spojeva. Osušeni plodovi kultivirane borovnice samljeveni su uz pomoć mlina s noževima. Ukupni fenoli u svježim i osušenim uzorcima određeni su uz pomoć spektrofotometrijske metode koristeći Folin-Ciocalteu reagens. Analiza fenolnih spojeva iz svježih i osušenih uzoraka urađena je uz pomoć tehnike visoko djelotvorne tekućinske kromatografije (HPLC) s foto- diodnim detektorom (DAD). Negativan utjecaj sušenja na polifenole manifestirao se kroz smanjenje sadržaja ukupnih i pojedinačnih fenolnih spojeva prisutnih u plodu kultivirane borovnice. Metoda sušenja liofilizacijom, uz prethodno naglo smrzavanje plodova borovnice u tekućem dušiku pri - 196 C, izazvala je najmanji gubitak fenolnih spojeva i stoga se smatra najprikladnijom metodom za sušenje, dok je liofilizacija uz postepeno smrzavanje pri – 80 C ostvarila nešto veće gubitke fenolnih spojeva. Najveće gubitke polifenola pretrpjeli su uzorci podvrgnuti konvekcijskom sušenju.Cultivated blueberry (Vaccinium corymbosum L.) is considered one of the most important commercial representatives of the genus Vaccinium. It arrived in Croatia from the United States of America and is considered an introduced species. Cultivated blueberry has good nutritional characteristics (good balance of macro and micronutrients) and sensory characteristics (pleasant color, aroma and taste). The presence of biologically active components, primarily phenolic compounds, gives additional value to this food. Considering the abundance and health aspect, anthocyanins should be highlighted as the most important representatives of phenolic compounds present in cultivated blueberry. In this work, the influence of different drying procedures: freeze-drying with gradual freezing (-80 C) and flash freezing (- 196 C), vacuum drying and convective drying on the stability of phenolic compounds was examined. The dried fruits of the cultivated blueberry were ground with the help of a knife mill. Total phenolics in fresh and dried samples were determined using the spectrophotometric method using the Folin-Ciocalteu reagent. The analysis of phenolic compounds from fresh and dried samples was carried out using the technique of high-performance liquid chromatography (HPLC) with a photo-diode detector (DAD). The negative impact of drying on polyphenols was manifested through a decrease in the content of total and individual phenolic compounds present in the fruit of the cultivated blueberry. The freeze-drying technique, with previous flash freezing of blueberry fruits in liquid nitrogen at - 196 C, caused the least loss of phenolic compounds and is therefore considered the most suitable method for drying, while freeze-drying with gradual freezing at - 80 C achieved slightly higher losses of phenolic compounds. Samples subjected to convection drying had the greatest loss of polyphenols
Metabolomic study: identification of hexadecanal as a potential biomarker for preeclampsia : diploma thesis
No full textU ovom diplomskom radu provedena je ne-ciljana metabolomička analiza hlapljivih organskih metabolita u uzorcima urina trudnica s ciljem pronalaska i identifikacije potencijalnih biomarkera preeklampsije – ozbiljnog metaboličkog poremećaja koji se javlja tijekom trudnoće. Ukupno je analiziran 91 uzorak urina, od čega je 45 uzoraka pripadalo trudnicama s dijagnosticiranom preeklampsijom, a ostalih 46 uzoraka zdravih trudnica služilo je kao kontrolna skupina. Kemijska analiza temeljena je na mikroekstrakciji vršnih para na krutoj fazi u kombinaciji s vezanim sustavom plinske kromatografije i spektrometrije masa (HS-SPME/GC-MS), nakon čega je uslijedila obrada podataka i statistička analiza kako bi se identificirali statistički značajni metaboliti. Provedba ove opsežne metabolomičke studije rezultirala je identifikacijom ukupno 29 hlapljivih metabolita u obje ispitivane skupine uzoraka, pri čemu se heksadekanal istaknuo kao statistički najznačajniji spoj povezan s preeklampsijom. Analiza biomarkera pokazala je obećavajući dijagnostički potencijal heksadekanala, dok je analiza obogaćenja istaknula njegovu povezanost sa metabolizmom sfingolipida. Stoga ova studija pozicionira heksadekanal kao potencijalni neinvazivni biomarker preeklampsije, pružajući novi uvid u metaboličke poremećaje koji stoje u pozadini patofiziologije ovog ozbiljnog zdravstvenog stanja.In this thesis, an untargeted metabolomics analysis of volatile organic metabolites in urine samples from pregnant women was conducted. The aim of it was identifying potential biomarkers for preeclampsia – a serious metabolic disorder that occurs during pregnancy. A total of 91 urine samples were analyzed, 45 of which belonged to pregnant women diagnosed with preeclampsia, while the remaining 46 samples from healthy pregnant women served as the control group. The chemical analysis was based on solid-phase microextraction of headspace vapor, combined with gas chromatography-mass spectrometry (HS- SPME/GC-MS), followed by data processing and statistical analysis to identify statistically significant metabolites. This comprehensive metabolomics study resulted in the identification of 29 volatile organic metabolites across both groups, with hexadecanal standing out as the most statistically significant compound associated with preeclampsia. Biomarker analysis demonstrated the promising diagnostic potential of hexadecanal, while enrichment analysis highlighted its connection to sphingolipid metabolism. Therefore, this study positions hexadecanal as a potential non-invasive biomarker for preeclampsia, providing fresh insights into the metabolic disturbances underlying the pathophysiology of this serious health condition
Chemical analysis of honey : diploma thesis
No full textU ovom diplomskom radu analizirane su fizikalno – kemijske karakteristike 33 uzorka meda i patvorine meda različitog botaničkog i geografskog podrijetla. Određena je njihova kiselost, električna vodljivost, sadržaj pepela i vode te koncentracija minerala i teških metala. Primjenom tehnike masene spektrometrije s induktivno spregnutom plazmom (ICP-MS) određeni su glavni elementi (Ca, K, Mg, Na, P i S) te elementi i ultra-elementi u tragovima (Ag, Al, As, B, Ba, Be, Cd, Co, Cr, Cu, Fe, Hg, Li, Mn, Mo, Ni, Pb, Rb, Sb, Se, Si, Sn, Sr, Ti, Tl i Zn). Iz dobivenih rezultata i njihovom usporedbom s važećom zakonskom regulativom izmjerena vrijednost električne vodljivosti kod jednog uzorka je viša, a kod dva uzorka niža od vrijednosti električne vodljivosti propisane Pravilnikom o medu. Kod rezultata sadržaja vode u medu jedan uzorak nije u skladu s Pravilnikom o medu. Izmjerene koncentracije teških metala kod devet uzoraka ne zadovoljavaju zakonsku regulativu, odnosno izmjerene koncentracije prelaze najviše dopuštene količine (NDK) prema Pravilniku o toksinima, metalima, metaloidima, te drugim štetnim tvarima koje se mogu nalaziti u hrani. Jedan uzorak cvjetnog meda pokazao je najviše razine većine minerala i teških metala u usporedbi s drugim uzorcima. Ova analiza ključna je za osiguranje kvalitete i sigurnosti meda, naglašavajući potrebu za strogim nadzorom i poštivanjem propisa o sigurnosti hrane.In this diploma thesis, the physico-chemical properties of 33 honey samples, including adulterated honey, from different botanical and geographical areas of origin were analyzed. Acidity, electrical conductivity, ash, water content and concentration of minerals and heavy metals were determined. The concentrations of major elements (Ca, K, Mg, Na, P and S), trace elements and ultraelements (Ag, Al, As, B, Ba, Be, Cd, Co, Cr, Cu, Fe, Hg, Li, Mn, Mo, Ni, Pb, Rb, Sb, Se, Si, Sn, Sr, Ti, Tl and Zn) were determined using the inductively coupled plasma mass spectrometry (ICP-MS) technique. The results showed that three samples did not meet the standards for electrical conductivity and one sample did not meet the legal requirements for the water content of honey. The heavy metal concentrations in nine samples did not meet the legal standards. In particular, one sample of blossom honey had the highest levels of most minerals and heavy metals compared to the other samples. This analysis is crucial for ensuring the quality and safety of honey and underlines the need for strict monitoring and compliance with food safety regulations
Traffic Analysis of the Award-winning Works of the Survey Competition for the Creation of a Conceptual Urban Solution for the East Coast City Project in Split : Master's Thesis
No full textDiplomski rad analizira primjenu tehnika prometnog inženjerstva u kontekstu urbanističkog projekta Istočne obale grada Splita. Cilj rada je proučiti predložena prometna rješenja i usporediti ih s postojećim stanjem, s fokusom na analizu kvalitete prometnih tokova. Za tu svrhu koristit će se softverski alat SIDRA, koji omogućuje simulaciju prometnog toka i pruža podatke o kapacitetu raskrižja, vremenima zadržavanja vozila i drugim relevantnim parametrima. Kroz analizu će se utvrditi prosječno zakašnjenje vozila, stupanj zasićenosti i razina usluge što će ukazati na kritična mjesta i moguće probleme u prometu na obuhvaćenom području.The master's thesis analyzes the application of traffic engineering techniques in the context of the urban project of the Eastern Coast of Split. The aim of the study is to examine the proposed traffic solutions and compare them with the existing conditions, with a focus on analyzing the quality of traffic flow. For this purpose, the SIDRA software tool will be used, which allows for traffic flow simulation and provides data on intersection capacity, vehicle delay times, and other relevant parameters. Through the analysis, average vehicle delay, degree of saturation, and level of service will be determined, indicating critical areas and potential traffic issues within the studied area
Retrospective analysis of the causes and course of rehabilitation of patients with total hip arthroplasty at the Department of Physical Medicine and Rehabilitation with Rheumatology at the Clinical Hospital Center Split
No full textOvaj završni rad bavi se retrospektivnom analizom uzroka i tijeka rehabilitacije pacijenata s ugrađenom totalnom endoprotezom (TEP) kuka na Zavodu za fizikalnu medicinu i rehabilitaciju s reumatologijom u Kliničkom bolničkom centru Split tijekom 2023. godine. Istraživanje je obuhvatilo 109 pacijenata, od kojih je 54 imalo ugrađenu totalnu endoprotezu kuka. Glavni uzroci za ugradnju TEP-a kuka su degenerativne bolesti, posebno koksartroza, dok su traumatske ozljede rjeđe, ali zahtijevaju složeniji rehabilitacijski postupak. Analiza je pokazala da su žene češće podvrgnute ovoj operaciji, što može biti povezano s različitim životnim navikama i drugim bolestima. Rehabilitacija se pokazala ključnom za uspješan oporavak pacijenata, pri čemu su pacijenti s traumatskim ozljedama imali dulji boravak u bolnici. Prosječne vrijednosti Barthelovog indeksa i opsega pokreta značajno su se poboljšale nakon rehabilitacije, što potvrđuje uspjeh rehabilitacijskih postupaka.This thesis presents a retrospective analysis of the causes and rehabilitation process of patients with total hip arthroplasty (THA) at the Department of Physical Medicine and Rehabilitation with Rheumatology at the Clinical Hospital Center Split during 2023. The study included 109 patients, of whom 54 underwent total hip arthroplasty. The main causes for THA were degenerative diseases, particularly coxarthrosis, while traumatic injuries were less common but required more complex rehabilitation. The analysis showed that women were more frequently subjected to this surgery, which can be related to different lifestyle habits and other diseases. Rehabilitation was found to be crucial for the successful recovery of patients, with those suffering from traumatic injuries having a longer hospital stay. The average values of the Barthel Index and range of motion significantly improved after rehabilitation, confirming the effectiveness of the rehabilitation procedures
THE LIFE CYCLE OF A FAMILY BUSINESS ON THE EXAMPLE OF THE GAVRILOVIĆ COMPANY
No full textŽivotni ciklus obiteljskih poduzeća je složen proces i svaka faza ima svoje izazove. U početnoj fazi cilj je pokrenuti poslovanje i preživjeti. Faza stabilizacije i rasta je sretno razdoblje u poslovanju obiteljskih poduzeća, dok se u fazi dozrelosti kada pokazatelji uspješnog poslovanja opadaju razmišlja da li napustiti poslovanje ili ga novim rješenjima ponovno stabilizirati. Važnost obiteljskih poduzeća za svjetsku i domaću ekonomiju, te gospodarstvo je jako velika jer ona zapošljavaju ne samo članove svoje obitelji nego nekada i veliki dio lokalne zajednice. Objašnjava se i prikazuje kroz različite sakupljene informacija iz raznih izvora i istraživanja koliko je zapravo obiteljsko poduzetništvo bitno za gospodarstvo jedne zemlje jer je ono velik izvor društvenog razvoja. Također su vrlo bitne i karakteristike obiteljskih poduzeća, prvenstveno prednosti i nedostatci kao što su samostalnost i sloboda, te obeshrabrenje i neodređeno radno vrijeme. Glavni cilj je analiza koliki utjecaj, kakvu moć, kakvu tradiciju poslovanja te kakav životni ciklus imaju obiteljska poduzeća, točnije jedno obiteljsko poduzeće kao što je Gavrilović. Ono je jedno od moćnijih i utjecajnijih poduzeća u državi te ga vodi čak deveta generacija nasljednika i upravo su to razlozi zašto je baš ono izabrano kao primjer. Dakle iz svega navedenog može se zaključiti da je životni ciklus ovog poduzeća jako dug i trenutno se poduzeće nalazi u fazi stabilizacije i rasta. Kroz pisanje ovog završnog rada mogli su se steći razni korisni zaključi o poduzetništvu i obiteljskim poduzećima kao bitnim faktorima gospodarstva svake države , te je rezultat pisanja ovog završnog rada usvojeno korisno znanje o tematici obiteljskog poduzetništva.The life cycle of family businesses is a complex process and each stage has its own challenges. In the initial phase, the goal is to start a business and survive. The phase of stabilization and growth is a happy period in the business of family businesses, while in the maturity phase, when indicators of successful business decline, people consider whether to leave the business or stabilize it again with new solutions. The importance of family businesses for the global and domestic economy, as well as the economy, is very great because they employ not only their own family members, but sometimes also a large part of the local community. It is explained and shown through various collected information from various sources and research, how important family entrepreneurship actually is for the economy of a country because it is a great source of social development. The characteristics of family businesses are also very important, primarily advantages and disadvantages such as independence and freedom, as well as discouragement and indefinite working hours. The main goal is to analyze how much influence, what kind of power, what kind of business tradition and what kind of life cycle family businesses have, more specifically a family business like Gavrilović. It is one of the most powerful and influential companies in the country, and it is run by even the ninth generation of heirs, and these are the reasons why it was chosen as an example. So from all of the above it can be concluded that the life cycle of this company is very long and currently the company is in the phase of stabilization and growth. Through the writing of this final paper, it was possible to gain various useful conclusions about entrepreneurship and family businesses as important factors of the economy of every country, and as a result of writing this final paper, useful knowledge on the topic of family entrepreneurship was adopted
LEAD REMOVAL FROM WASTEWATER USING BY-PRODUCTS/WASTE FROM THE FOOD INDUSTRY : diploma thesis
No full textSve veći porast gradskog stanovništva, razvoj industrije i energetike, povećanje komunalnog otpada i razvoj masovnog turizma dovode do emisije štetnih metala u okoliš. Navedeni antropogeni izvori znatno onečišćuju vode u prirodi teškim metalima, stoga je neophodno razviti metode uklanjanja teških metala iz vode na siguran i ekološki prihvatljiv način. U ovom radu ispitana je učinkovitost uklanjanja teškog metala olova iz otpadne vode sorpcijom na nusproizvodima/otpadu iz prehrambene industrije (košticama maslina, peletu od komine maslina, ostacima hridinskog ježinca, košticama trešanja i košticama višanja). Sorpcija olova provedena je šaržnim postupkom iz otpadne vode koncentracije 0,5 mmol Pb/L i 1,5 mmol Pb/L. Svi ispitani biosorbensi pokazali su potencijal uklanjanja olova iz obiju otpadnih voda. Bolje uklanjanje olova postignuto je pri nižoj početnoj koncentraciji. Najveću učinkovitost pokazale su koštice višanja i to 83,65 % pri nižoj početnoj koncentraciji olova te 54,90 % pri višoj početnoj koncentraciji. Iako je postignuto prilično dobro uklanjanje olova iz otpadne vode, zaostala koncentracija olova bila je iznad zakonom propisanih vrijednosti za ispust efluenta u površinske vode i u sustav javne odvodnje. Stoga bi buduća istraživanja trebalo usmjeriti na modifikaciju ispitanih biosorbenasa radi povećanja njihove učinkovitosti u obradi voda onečišćenih olovom.Increase in the city's population, the development of industry and energetics, the increase in municipal waste and the development of mass tourism lead to the emission of harmful metals into the environment. The mentioned anthropogenic sources significantly pollute water in nature with heavy metals, thus it is necessary to develop methods of removing heavy metals from water in a safe and environmentally friendly manner. In this diploma thesis the effectiveness of lead removal from wastewater by sorption using by-products/waste from the food industry (olive pits, olive pomace pellets, residues of the sea urchin, cherry pits and sour cherry pits) was examined. Sorption of lead was carried out by a batch performance from wastewater containing 0.5 mmol Pb/L and 1.5 mmol Pb/L. All tested biosorbents showed the potential for lead removal from both wastewaters. Better removal was achieved at lower initial lead concentration. The highest efficiency of 83.65 % was obtained by sour cherry pits for lower initial lead concentration and 54.90 % for higher initial lead concentration. Although a good lead removal was achieved, the residual lead concentration was still above the prescribed value for discharge into the public sewage system and into the surface waters. Therefore, future research should be focused on the modification of the tested biosorbents in order to increase their efficiency in treatment of lead polluted water
Aromatic profile of Ninski šokol : diploma thesis
No full textNinski šokol je jedinstveni gastronomski proizvod jedinstvene arome, koji ima dugu tradiciju proizvodnje u gradu Ninu i širem okolnom području. Za izradu ninskog šokola vrlo važno je kvalitetno svinjsko meso, ninska sol, razni začini i tradicijski proces proizvodnje. Specifičnosti sirovine, tehnološkog postupka pripreme i zrenja rezultiraju povećanjem koncentracije hlapljivih spojeva arome. Te su komponente proizašle iz biokemijskih procesa prilikom razgradnje masnog, vezivnog i mišićnog tkiva a odgovorne su za specifična okusna i mirisna obilježja ovog proizvoda. Hlapljivi spojevi su izolirani metodom mikroekstrakcije vršnih para na krutoj fazi (HS-SPME), korištenjem triju vlakana različite polarnosti. Izolirani spojevi su analizirani spregnutom tehnikom plinska kromatografija – spektrometrija masa (GC- MS) u cilju usporedbe sličnosti i razlika dobivenih rezultata. Ukupno je identificirano 38 spojeva koji se mogu svrstati u kemijske skupine: aldehide, alkohole, alkane, estere, fenole, masne kiseline i terpene.Ninski šokol is a distinctive gastronomic meat product with an unique aroma, produced for centuries in the town of Nin and its surrounding areas. Its preparation relies on high-quality pork, local salt from Nin, various spices and traditional methods, which are crucial for achieving its distinctive flavor. The specific qualities of the raw materials and the aging process lead to a higher concentration of volatile aromatic compounds. These compounds are result of biochemical processes that occur during the breakdown of fat, connective and muscle tissues, contributing to the unique taste and aroma of the product. The volatile compounds were isolated using headspace solid-phase microextraction (HS- SPME) with three fibers of different polarities. The extracted compounds were analyzed using gas chromatography-mass spectrometry (GC-MS) to compare the similarities and differences in the results. A total of 38 compounds were identified, categorized into the chemical groups such as aldehydes, alcohols, alkanes, esters, phenols, fatty acids, and terpenes, further highlighting the complexity and richness of Ninski šokol