Ilustracija u dubokom tisku

Ilustracija se kroz povijest koristila kao slikovno objašnjenje bez upotrebe riječi. U današnje vrijeme je čest motiv unutar knjiga. Cilj joj je kroz svoje slikovne primjere pobliže opisati i dočarati priloženi tekst. U ovom radu izvedena su dva crteža ilustrativnog karaktera u tehnikama dubokog tiska. Prikazani radovi „Drvo“ i „Planina“ su spoj tehnika i znanja koja sam stekao kroz protekle tri godine studiranja. Ovim završnim radom opisao sam svoj tok misli i proces izrade grafika

Ilustracija u dubokom tisku

Ilustracija se kroz povijest koristila kao slikovno objašnjenje bez upotrebe riječi. U današnje vrijeme je čest motiv unutar knjiga. Cilj joj je kroz svoje slikovne primjere pobliže opisati i dočarati priloženi tekst. U ovom radu izvedena su dva crteža ilustrativnog karaktera u tehnikama dubokog tiska. Prikazani radovi „Drvo“ i „Planina“ su spoj tehnika i znanja koja sam stekao kroz protekle tri godine studiranja. Ovim završnim radom opisao sam svoj tok misli i proces izrade grafika

Ilustracija u dubokom tisku

Ilustracija se kroz povijest koristila kao slikovno objašnjenje bez upotrebe riječi. U današnje vrijeme je čest motiv unutar knjiga. Cilj joj je kroz svoje slikovne primjere pobliže opisati i dočarati priloženi tekst. U ovom radu izvedena su dva crteža ilustrativnog karaktera u tehnikama dubokog tiska. Prikazani radovi „Drvo“ i „Planina“ su spoj tehnika i znanja koja sam stekao kroz protekle tri godine studiranja. Ovim završnim radom opisao sam svoj tok misli i proces izrade grafika

Solvothermaly synthesized copper doped bismuth vanadate

Photoeletrochemical (PEC) water splitting is a promising method for clean energy production and different oxide materials have been explored to find the right solution. Among them, as one of the most promising photoanode materials, bismuth vanadate (BiVO4) has attracted a lot of attention due to the suitable band gap edge alignment, lowcost synthesis method and great visible light harvesting features. Nowdays, research related to the BiVO4 is mostly oriented towards repairing poor charge transfer properties which exist due to the high rate of electron–hole recombination. Metal doping is one of the strategies to improve these intrinsic drawbacks. Herein, we report physicochemical properties of solvothermaly sinthesized pristine BiVO4, 1%-, 2.5%- and 5%- Cu-doped BiVO4 powders at 180 ºC for 8 h. X-ray diffraction (XRD) study indicates that, depending on the degree of doping, material exists in monoclinic or tetragonal scheelite phase. Pure monoclinic phase was formed in a case of pristine, 1%- and 2.5%- Cu doped samples. After doping with 5 %, phase transition occurred and material showed tetragonal phase. Scanning electron microscopy (SEM) reveals that samples with monoclinic phase consists of worm-like and prismatic structures while tetragonal samples exhibited spherical shape. Furthermore, structure was examined with Raman and FTIR spectroscopy. The results were in accordance with diffraction study where band positions were well matched with phase composition. Optical properties were characterized with UV–Vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. Monoclinic samples showed band gap around 2.4 eV, while sample with tetragonal phase has band gap around 2.8 eV. PL showed that that monoclinic samples possess better recombination features than tetragonal ones. Photoelectrochemical measurements suggest that material is sensitive towards visible light and, after doping, improved its performance towards oxygen evolution reaction.8th Conference of Young Chemists of Serbia; 29th October, Belgrade, Serbi

The role of defects in graphene for removal of toxic compounds – Theoretical analysis

Understanding the adsorption of pesticides and toxic gases on graphene has high importance for their degradation and removal. In the present study, the adsorption of different models of organophosphate pesticides (OPH3, OPF3, SPH3 and SPF3) and inorganic molecules (H2O and NH3) on perfect and defected graphene was examined by using the DFT method. Inspected systems were pristine, single-vacancy (SV), Stone-Wales (SW) and epoxy graphene. Pristine graphene exhibits great adsorption affinity towards OPH3 molecule, while it shows insignificant adsorption towards other examined species. The introduction of defects influences the reactivity of these molecules on the graphene surface. Among them, SV graphene showed the highest adsorption affinity for H2O, NH3, OPH3 and OPF3, while SW graphene showed the most suitable adsorption properties towards SPH3 and SPF3 molecules. The interaction between molecules and graphene was mostly physisorption except in the case of epoxy graphene where degradation of organophosphates occurred (Figure 1). This study suggests that graphene can be potentially used to remove environmental pollutants and pesticides' chemical degradation, while the surface chemistry of graphene should be carefully tailored for this application.Nineteenth Young Researchers' Conference Materials Science and Engineering, December 1-3, 2021, Belgrade, Serbi

Microbiological diagnostics of invasive meningococcal disease in Croatia – are standard methods optimal methods even today

Potvrda dijagnoze invazivne meningokokne bolesti (IMB) često je onemogućena zbog rane primjene antibotika. Nekultivacijske molekularne metode postaju zato novi "zlatni standard" u mikrobiološkoj dijagnostici IMB u razvijenim zemljama i preporučeno pomagalo u ostalim zemljama. Uvođenje molekularnih testova 2005. godine u rutinsku dijagnostku IMB u Klinici za infektivne bolesti "Dr. Fran Mihaljević" značajno su ubrzali i unaprijedili postavljanje etiološke dijagnoze. U razdoblju od siječnja 2005. do travnja 2013 godine više od 50% slučajeva IMB potvrđeno je samo real time PCR testom. Pojava invazivnih penicilin-rezistentnih izolata N. meningitidis nameće potrebu praćenja gena penA, odgovornog za rezistenciju na penicilin. Dobra osjetljivost izolata na ciprofloksacin, rifampicin i ceftriakson omogućava nam primjenu ovih antibiotika u profilaksi prema sadašnjim preporukama struke. Serotipizacija i serosubtipizacija nisu više preporučene rutinske metode u karakterizaciji izolata meningokoka. Cjepiva protiv meningokoka grupe B pripremljena od proteina vanjske membrane (OMV cjepiva) mogla su biti primijenjena uspješno uglavnom samo u nacionalnim okvirima. Međutim s razvojem reverzne vakcinologije i pojavom multikomponentnih MenB cjepiva (fHBP, NHBA, NadA, OMP Novi Zeland – P1.7-2,4) postaje značajno genotipizirati lokalne izolate i pratiti obuhvat zaštićenosti populacije ponuđenim novim cjepivima u nacionalnim okvirima. To će zasigurno biti dio našeg budućeg rada samostalno i/ili u suradnji s europskim referentnim centrima za meningokoke i Europskim centrom za prevenciju i kontrolu bolesti (ECDC).Culture-confirmed diagnosis of invasive meningococcal disease (IMD) is often hindered by early antibiotic treatment. Nonculture molecular standardized methods are now essential tools and almost "new gold standard" in microbiological diagnostics of IMD in developed world and recommended tool in other parts of the world. The introduction of the real time PCR in routine diagnostics of IMD at the University Hospital for Infectious Diseases (UHID) in 2005 significantly improved etiological diagnosis of disease. More than 50% of IMD cases of hospitalized patients in UHID from January 2005 to April 2013 were confirmed only by real time PCR. The emergence of penicillin resistant N. meningitidis invasive isolates leads us to the introduction of the detection of penA gene responsible for penicillin resistance. Nevertheless, IMD prophylaxis in Croatia may continue to be based on the current recommendations of epidemiological service due to proved susceptibility to all antibiotics commonly used for this purpose, rifampicin, ciprofloxacin and ceftriaxone. Serotyping and serosubtyping are not any more recommended in routine characterization of meningococcal isolates. OMV vaccines against N. meningitidis serogroup B, prepared from outer membrane proteins, have not proved to be successful supranational. However, after the development of reverse vaccinology and multicomponent MenB (fHBP, NHBA, NadA, OMP New Zealand – P1.7-2,4) vaccine genotyping was placed as an important tool for following up characteristics of invasive meningococcal isolates as well as following up of vaccine coverage with the available new and future MenB vaccines or perhaps broad range vaccines. This will undoubtedly be a part of our future work on the national level and/or in cooperation with other European national reference centres and the European Centre for Disease Prevention and Control (ECDC)

System Dynamics Modelling of Renewable Sea Resources

Kompjutorska simulacija ima sve veću primjenu u proučavanju bioloških i ekoloških sustava. Zasigurno, postoji mnogo različitih tipova simulacijskih tehnika, a mi ćemo u ovom radu predstaviti metodu koja je originalno poznata kao „industrijska dinamika“ (Forrester, 1961.). Ova je metoda polako prerasla u teoriju što povezuje strukturu sustava s njegovim dinamičkim ponašanjem (Forrester, 1968.) i prihvaćen je novi naziv: „sustavna dinamika“ (Forrester, 1971.). Prema prof. dr. J. Forrester - MIT sustavna dinamika je filozofija o sustavu, u osnovi kvalitativnoga karaktera. Zatim, to je prepoznavanje dominacije krugova povratne veze na osnovi dinamičkoga ponašanja sustava, a koji su ujedno i pod utjecajem funkcioniranja samog sustava. Osnova sustavne dinamike je prepoznavanje unutarnje strukture sustava, tj. razumijevanje dinamike ponašanja koja može proizaći iz samog sustava (Roberts i sur., 1983.). Ova teorija, koja je danas potpuno opravdano prerasla u novu znanstvenu disciplinu, povezuje strukturu sustava s njegovom vlastitom dinamikom ponašanja, ali i s uzajamnim djelovanjem relevantne okoline promatranog sustava! Kod bioloških sustava interakcije mnogih njegovih elemenata tvore odgovor sustava ili njegovo ponašanje (Moxnes, 2002.). U ovom radu prikazat će se primjena sustavne dinamike u modeliranju obnovljivih morskih resursa, tj. izložit će se konkretna primjena na ribljoj populaciji.Recent computer simulation has been increasingly used for investigating biological and ecological systems. Naturally, there are many different types of simulation approaches, but in this paper we will present a method which is originally known as „Industrial dynamics“ (Forrester, 1961). From its beginnings this method slowly became a theory which connects the structure of the system with dynamics behaviour of system (Forrester, 1968) and it is known by a new name „System dynamics“ (Forrester, 1971). According to Prof. Dr. J. Forrester from MIT System dynamics, in general, is philosophy about the system, which in basis has qualitative character and identification of dominative feedback loops in dynamics behaviour of the system, which are not isolated but under the influence of operating of the system itself. The fundamental of System dynamics is recognition of internal structure of the system, i.e. understanding the dynamics of behaviour which can result from the system alone (Roberts et al., 1983). This theory, nowadays recognized as a new scientific discipline known by the name System dynamics connects the structure of the system with its own dynamics of behaviour and with mutual interaction with surrounding environment of the observed system. In biological systems interaction of many elements of the system produces the answer of the system or its dynamics of behaviour (Moxnes, 2002). In this paper we will present application of System dynamics in modelling the renewable sea resources, i.e. we will present concrete application on indefinite fish population

Microbiological diagnostics of invasive meningococcal disease in Croatia – are standard methods optimal methods even today

Potvrda dijagnoze invazivne meningokokne bolesti (IMB) često je onemogućena zbog rane primjene antibotika. Nekultivacijske molekularne metode postaju zato novi "zlatni standard" u mikrobiološkoj dijagnostici IMB u razvijenim zemljama i preporučeno pomagalo u ostalim zemljama. Uvođenje molekularnih testova 2005. godine u rutinsku dijagnostku IMB u Klinici za infektivne bolesti "Dr. Fran Mihaljević" značajno su ubrzali i unaprijedili postavljanje etiološke dijagnoze. U razdoblju od siječnja 2005. do travnja 2013 godine više od 50% slučajeva IMB potvrđeno je samo real time PCR testom. Pojava invazivnih penicilin-rezistentnih izolata N. meningitidis nameće potrebu praćenja gena penA, odgovornog za rezistenciju na penicilin. Dobra osjetljivost izolata na ciprofloksacin, rifampicin i ceftriakson omogućava nam primjenu ovih antibiotika u profilaksi prema sadašnjim preporukama struke. Serotipizacija i serosubtipizacija nisu više preporučene rutinske metode u karakterizaciji izolata meningokoka. Cjepiva protiv meningokoka grupe B pripremljena od proteina vanjske membrane (OMV cjepiva) mogla su biti primijenjena uspješno uglavnom samo u nacionalnim okvirima. Međutim s razvojem reverzne vakcinologije i pojavom multikomponentnih MenB cjepiva (fHBP, NHBA, NadA, OMP Novi Zeland – P1.7-2,4) postaje značajno genotipizirati lokalne izolate i pratiti obuhvat zaštićenosti populacije ponuđenim novim cjepivima u nacionalnim okvirima. To će zasigurno biti dio našeg budućeg rada samostalno i/ili u suradnji s europskim referentnim centrima za meningokoke i Europskim centrom za prevenciju i kontrolu bolesti (ECDC).Culture-confirmed diagnosis of invasive meningococcal disease (IMD) is often hindered by early antibiotic treatment. Nonculture molecular standardized methods are now essential tools and almost "new gold standard" in microbiological diagnostics of IMD in developed world and recommended tool in other parts of the world. The introduction of the real time PCR in routine diagnostics of IMD at the University Hospital for Infectious Diseases (UHID) in 2005 significantly improved etiological diagnosis of disease. More than 50% of IMD cases of hospitalized patients in UHID from January 2005 to April 2013 were confirmed only by real time PCR. The emergence of penicillin resistant N. meningitidis invasive isolates leads us to the introduction of the detection of penA gene responsible for penicillin resistance. Nevertheless, IMD prophylaxis in Croatia may continue to be based on the current recommendations of epidemiological service due to proved susceptibility to all antibiotics commonly used for this purpose, rifampicin, ciprofloxacin and ceftriaxone. Serotyping and serosubtyping are not any more recommended in routine characterization of meningococcal isolates. OMV vaccines against N. meningitidis serogroup B, prepared from outer membrane proteins, have not proved to be successful supranational. However, after the development of reverse vaccinology and multicomponent MenB (fHBP, NHBA, NadA, OMP New Zealand – P1.7-2,4) vaccine genotyping was placed as an important tool for following up characteristics of invasive meningococcal isolates as well as following up of vaccine coverage with the available new and future MenB vaccines or perhaps broad range vaccines. This will undoubtedly be a part of our future work on the national level and/or in cooperation with other European national reference centres and the European Centre for Disease Prevention and Control (ECDC)

The role of anterolateral ligament in anterior cruciate ligament reconstruction – plantaris tendon graft technique

Anterior cruciate ligament (ACL) reconstruction is the principal treatment option in symptomatic patients with ACL rupture. Regardless of the technique utilised, ACL reconstruction alone could not always restore normal knee kinematics, especially rotational stability. Moreover, present techniques mostly use autografts such as hamstring tendons and additionally disrupt the knee bio- mechanics. The anterolateral ligament (ALL) of the knee has been recognised as an important structure in providing rotational knee stability. Concurrent reconstruction of ACL and ALL ligaments has proven superior in both clinical stability tests and subjective outcome scores. Using plantaris tendon as ALL graft, detrimental effects of harvesting two hamstring tendons are avoided

Transition towards decarbonisation for islands: Development of an integrated energy planning platform and application

This paper presents REACT-DECARB, an energy planning decarbonisation platform employing renewable energy sources coupled with storage for islands. The paper implements the energy scenario creation and economic evaluation steps of the platform on eight geographic islands in seven countries within the EU. Twenty-one technologically feasible energy scenarios, applicable to the specific conditions of each island, are specified and their economic assessment via a levelized cost of energy (LCOE) calculation is then performed. The main aim of this application is to verify the noted steps of the platform as well as to test its flexibility across geographically, socially and dimensionally disparate islands with various scenario generation methods. The results of the economic analysis show a wide variation of LCOE depending primarily on whether full island autonomy is assumed. In some cases the islands’ scenarios’ costs approach current market prices but are never below them; some scenarios are, however, below the current price of the island’s thermal generation. The sensitivity and uncertainty of the economic performance results’ and the variables used to calculate them are evaluated and discussed for two of the islands. The overall analysis and application has shown that the REACT-DECARB platform is suitable for different islands, regardless of location and size and can be useful for island energy planners