Hydrogeological Relationships of the Golubinka Karst Spring in Ljubač Bay, Dalmatia, Croatia

The Golubinka spring is a typical karst spring situated in northern Dalmatia, Croatia. The catchment area is mostly composed of limestones of the Cretaceous and Palaeogene, with some dolomitic parts. Hydrogeological barriers are composed of flysch or Quaternary sediments, and most of them are “hanging” barriers, so that the karst water can flow underneath. Many spelaeological features in the vicinity of the spring point to a typical karst conduit flowing under ground. This has been proven by tracer tests, because a connection exists to the periphery of the catchment with an apparent velocity of 8.1 cm/s. The whole area is situated in the Mediterranean climatic belt, so the precipitation distribution is quite unfavourable – summers are long, hot and dry. This is why the summer seasons usually end with sea water intrusion into the aquifer with a significant increase in chloride ion concentration. Since the spring is capped for water supply, there is a bulk monitoring system established. The data obtained were processed by means of multivariate analysis, and three main types of quality deterioration were recognized. The first is connected with pollution from agriculture and inhabited areas without sewage, the second represents occasional sea water intrusions, while the third relates to heavy rainfall events accompanied by turbidity and pollution. Together with the other conclusions, these results should have a practical purpose primarily in the matter of water protection

Comparison of clinical and histological diagnosis in children with classic and laparoscopic appendectomy

Abdominalna bol je jedan od glavnih razloga hitnog prijema, a akutni apendicitis je jedno od najčešćih kirurških hitnih stanja u dječjoj dobi. Postaviti dijagnozu akutnog apendicitisa u pedijatrijskoj populaciji i donijeti odluku o apendektomiji, izazov je i dan danas, čak i za iskusne kliničare. Naime, dijagnoza je sinteza podataka dobivenih iz anamneze, kliničkog pregleda, laboratorijskih vrijednosti te radioloških pretraga. Neprepoznata dijagnoza ili odgađanje kirurškog zahvata može rezultirati komplikacijama kao što su perforacija, apsces i peritonitis. S druge strane, u stanjima koja samo nalikuju akutnom apendicitisu odluka kliničara o apendektomiji vodi ka uklanjanju inocentnih crvuljaka u 15-30% (1,65). Cilj ovog rada je pružiti usporedbu kliničke i histološke dijagnoze te ostalih vrednovanih parametara između dviju skupina djece; laparoskopski i klasično apendektomirane. U radu je analizirano 330 djece sa sumnjom na akutni apendicitis, u dobi od dvije do 19 godina, koja su u razdoblju od 2013. do 2016. hospitalizirana i liječena na Zavodu za dječju kirurgiju u Kliničkom bolničkom centru Zagreb. Omjer dječaka i djevojčica je 1.34:1. Sva su djeca apendektomirana; njih 83.6% laparoskopski, a 16.4% klasičnom operacijom, kojima su pridruženi i slučajevi kada je došlo do konverzije iz laparoskopske u klasičnu apendektomiju. Podudaranje makroskopskog nalaza operatera i mikroskopskog nalaza patologa ne bilježi se u velikom postotku. U skupini laparoskopsko apendektomiranih nalazi su se podudarali u 46.2%, a kod klasično apendektomiranih u 35.2% slučajeva. Veće vrijednosti Alvarado bodova (≥7 u prosjeku) upućuju na flegmonozni ili gangrenozni stadij akutnog apendicitisa. Perforacija crvuljka rjeđa je pojava kod laparoskopsko apendektomiranih (10.2% naspram 32%). Od svih inocentnih crvuljaka, njih 90% pronađeno je kod djece koja su laparoskopsko apendektomirana. K tomu je negativna apendektomija češća pojava među djevojčicama (19.9%) nego li među dječacima (6.3%). Peritiflitički apsces kao posljedica perforacije, češći je intraoperativni nalaz u skupini KA (66.7% svih peritiflitičkih apscesa). Komplikacije apendektomije, infekcija kirurške rane te instraabdominalni apsces pojavljuju se po sličnom obrascu; vrlo rijetko i bez statistički značajne razlike među skupinama.Abdominal pain is one of the most common causes of emergency department admissions and acute appendicitis is one of the most frequent surgical emergencies in children. To diagnose acute appendicitis and make a decision about appendectomy in the pediatric population is still challenging nowadays, even for experienced clinicians. In fact, the clinical diagnosis represents a synthesis of the medical history, physical examination, laboratory tests and radiographic imaging. An unrecognized diagnosis or delayed surgical removal of an inflamed appendix may result in complications such as perforation, abscess and peritonitis. On the other hand, due to clinical conditions that are similar to acute appendicitis, clinicians' decisions about appendectomy lead to an unnecessary removal of the appendix in 15-30% of cases (1,65). The aim of this study was a comparison of the clinical and histological diagnosis, and other valued parameters between two groups of children: those who underwent laparoscopic and those who had a classic appendectomy. 330 children aged two to 19 years, who were admitted to the Department of Pediatric Surgery at the University Hospital Centre Zagreb, in the period between 2013 and 2016 under suspicion of acute appendicitis, were analyzed in this study. The boys to girls ratio was 1.34:1. All of the children underwent the appendectomy; 83.6% of them had a laparoscopic, and 16.4% a classic procedure. The latter group also comprised those cases who were converted from laparoscopic to classic appendectomy. Concordance between the macroscopic surgical and microscopic pathological diagnoses was low. In the group of laparoscopic appendectomy, the diagnoses were correlated in 46.2%, and among those who underwent classic appendectomy in 35.2% of the cases. Higher Alvarado scores (average ≥7) point to phlegmonous or gangrenous acute appendicitis. A perforated appendix was less common among children who underwent laparoscopic appendectomy (10.2% in comparison with 32% in the other group). 90% of all innocent appendices were found in the laparoscopic appendectomy group. Furthermore, the negative appendectomy rate was higher among girls (19.9%) than boys (6.3%). Periappendiceal abscess after perforation was a more common intraoperative assessment in the classic appendectomy group (66.7% of all abscesses). Complications associated with appendectomy, infection of the surgical site and intraabdominal abscess, had the same incidence pattern – they occured rarely and with no statistically significant difference between the groups

Acute heart failure due to the left atrial myxoma causing mitral valve obstruction

A 64 year-old woman without history of cardiovascular diseases and without cardiovascular risk factors was referred to our hospital because of acute heart failure. A real-time three-dimensional echocardiography (3D) revealed left atrium tumor causing mitral valve obstruction. 3D characteristics of the tumor were highly suggestive of cardiac myxoma. Surgical excision was successfully performed and myxoma was confirmed histologically. Although cardiac myxoma typically presents a silent heart failure, our case suggests that it should be even considered a cause of acute heart failure, especially in patients with no previous history or signs of cardiovascular disease

Charge Disproportionation, Mixed Valence, and Janus Effect in Multiorbital Systems: A Tale of Two Insulators

Multiorbital Hubbard models host strongly correlated "Hund's metals" even for interactions much stronger than the bandwidth. We characterize this interaction-resilient metal as a mixed-valence state. In particular, it can be pictured as a bridge between two strongly correlated insulators: a high-spin Mott insulator and a charge-disproportionated insulator which is stabilized by a very large Hund's coupling. This picture is confirmed comparing models with negative and positive Hund's coupling for different fillings. Our results provide a characterization of the Hund's metal state and connect its presence with charge disproportionation, which has indeed been observed in chromates and proposed to play a role in iron-based superconductors

The Influence of Pressing and Microwave Heating on the Production and Shelf life of Hemp Oil variety Finola

U ovom radu istraživan je utjecaj procesnih parametara hladnog prešanja sjemenki konoplje na iskorištenje ulja. Ispitivani su parametri frekvencija elektromotora, veličina otvora glave preše za izlaz pogače i temperatura grijača glave preše. Također je istraživan utjecaj mikrovalnog zagrijavanja na oksidacijsku stabilnost ulja konoplje, sa i bez dodatka antioksidansa i sinergista. Od prirodnih antioksidansa korišteni su ekstrakt ružmarina, ekstrakt kadulje, sintetski antioksidans BHA te sinergist limunska kiselina. Uzorci ulja zagrijavani su u mikrovalnoj pećnici kod konstante snage u različitom vremenskom periodu. Također su uzorci zagrijavani kod različite snage uređaja i konstantnom vremenskom periodu. Rezultat testa ubrzane oksidacije ulja konoplje izražen je peroksidnim brojem. Porastom frekvencije elektromotora i veličine otvora glave preše za izlaz pogače dolazi do smanjenja količine proizvedenog ulja konoplje. Porastom temperature glave preše povećava se proizvodnja sirovog ulja i hladno prešanog ulja. Mikrovalnim zagrijavanjem uzoraka ulja u vremenu 10-50 minuta dolazi do porasta temperature i peroksidnog broja, dolazi do porasta oksidacijskog kvarenja ulja. Najveća stabilnost ulja konoplje postignuta je kombinacijom ekstrakta ružmarina i sinergista limunske kiseline.In this study the influence of process parameters of cold pressing hemp seeds on yield oil was researched. Electric motor frequency, nozzle size and nozzle heater temperature were the investigated parameters. The effect of microwave heating to oxidative stability of hemp oil, with and without the addition of antioxidants and synergists, was also researched. Out of natural antioxidants there were used rosemary extract and sage extract, BHA synthetic antioxidant and citric acid synergist. Oil samples were heated in microwave oven at constant power in different time intervals. Samples were also heated with different appliance power and in constant period. The result of accelerated hemp oil oxidation test is expressed by peroxide number. The increase in electric motor frequency and nozzle size results in the quantity decrease of produced hemp oil. The increase in the nozzle size temperature increases the production of crude oil and cold pressed oil. Microwave heating of oil samples in the period of 10 to 50 minutes leads to the increase of temperature and peroxide number which further leads to oxidative degradation. The highest hemp oil stability was achieved by the combination of rosemary extract and citric acid synergists

The Impact of Social Networks on Sports and Recreation : Undergraduate Thesis

U posljednjih nekoliko godina dolazi do mijenjanja potražnje fitness i sportskog tržišta. Oni zbog sve većeg utjecaja društvenih mreža počinju proizvoditi i na tržište izbacivati suplemente, raznu sportsku opremu, odjeću i obuću te promovirati zdravu vrstu prehrane. Fitness kultura objedinjuje sve pojmove zdravog načina života ali samim time postavlja i standarde koji se u virtualnom svijetu predstavljaju kao realni, no u stvarnosti taj pojam je daleko od istine. Internet revolucija dovodi u opasnost očekivanja mlađih generacija i samim time zahtjeva nadilaženje do sada postavljenih standarda. Time negativno utječe na mlade i može dovesti do stvaranja poremećaja u prehrani, pada samopouzdanja i osjećaja depersonalizacije i derealizacije i sličnih. Ovaj rad sažima utjecaj društvenih mreža na fitness, sport i rekreaciju te nove marketinške strategije koje omogućuju poduzetnicima i njihovim klijentima bolju komunikaciju i viši stupanj zadovoljstva korištenom uslugom ili proizvodom.In the last few years, there has been a change in the demand of the fitness and sports market. Due to the incresing influence of social networks, there has been a lot more produce of supplements, various sports equipments, clothes, sports shoes and promotions of a healthy diet. Fitness culture unites all concepts of a healthy lifestyle, but also sets the standards that are presented as realistic online, but in reality, this concept could not be further from the truth. The Internet revolution thereby endangers the expectations of the younger generations and thus requires going beyond the ones set up until now. This has a negative effect on young people and can also lead to the creation of eating disorders, a drop in self confidence and feeling of depersonalisation and derealisation. This final examinatiom summarizes the impact of social networks on fitness, sports and recreation but also new marketing strategies that enable entrepreneurs and their clients to communicate better and have a higher level of satisfaction towards the servise or a product that is being used

THE PRODUCTION OF HEMP OIL VARIETY FINOLA WITH A SCREW PRESS

Hladno prešano konopljino ulje je nerafinirano ulje dobiveno metodom prešanja s kontinuiranom pužnom prešom. Temperatura proizvedenog ulja prešanjem ne prelazi 50 °C što dovodi do očuvanja poželjnih nutrijenata ulja. Prešanjem se izdvaja 60–80 % sirovog ulja iz sjemena, koje se u svrhu izdvajanja netopljivih nečistoća podvrgava postupcima sedimentacije i filtracije. Ovakvo dobiveno hladno prešano ulje ima sačuvana prirodna svojstva (miris, okus, boja). U ovom radu istraživan je utjecaj procesnih parametara hladnog prešanja sjemenki konoplje sorte Finola na iskorištenje i kvalitetu ulja. Ispitivani su procesni parametri frekvencija elektromotora, veličina otvora glave preše za izlaz pogače i temperatura grijača glave preše. Rezultati istraživanja pokazuju da procesni parametri prešanja sjemenki konoplje utječu na iskorištenje ulja. Korištenjem manje frekvencije elektromotora, manjeg nastavka za izlaz pogače i veće temperature glave preše proizvedena je veća količina konopljinog ulja. Metodom po Soxhletu određen je udio ulja u sjemenkama i pogači, kako bi se odredila djelotvornost preše i optimalni procesni parametri prešanja za proizvodnju ulja.Cold – pressed hemp oil is unrefined oil obtained by pressing with a continuous screw press. Oil temperature in the cold – pressing process does not exceed 50 ° C, preserving the oils desirable nutrients. Pressing extracts 60 – 80 % of raw oil from the seeds, which, for the purpose of removing insoluble impurities , then undergoes processes of sedimentation and filtration. The recovered cold – pressed oil preserves its natural properties (smell, taste, colour). In this paper, we analysed the influence of process parameters in cold – pressing Finola – strain hemp seeds on oil yield and quality. Examined process parameters were cold – press electric motor frequency, nozzle size, and temperature of the output press head. The result of this research show that hemp seed pressing parameters affect oil utilization. Lower electric motor frequency, a smaller size press – nozzle, and higher temperature of the output press head yield a greater amount of hemp oil. Content of oil in the seeds and the cake was determined using the Soxhlet method, in order to ascertain the efficiency of cold – pressing, as well as the optimal pressing process parameters for oil production

Comparison of clinical and histological diagnosis in children with classic and laparoscopic appendectomy

Abdominalna bol je jedan od glavnih razloga hitnog prijema, a akutni apendicitis je jedno od najčešćih kirurških hitnih stanja u dječjoj dobi. Postaviti dijagnozu akutnog apendicitisa u pedijatrijskoj populaciji i donijeti odluku o apendektomiji, izazov je i dan danas, čak i za iskusne kliničare. Naime, dijagnoza je sinteza podataka dobivenih iz anamneze, kliničkog pregleda, laboratorijskih vrijednosti te radioloških pretraga. Neprepoznata dijagnoza ili odgađanje kirurškog zahvata može rezultirati komplikacijama kao što su perforacija, apsces i peritonitis. S druge strane, u stanjima koja samo nalikuju akutnom apendicitisu odluka kliničara o apendektomiji vodi ka uklanjanju inocentnih crvuljaka u 15-30% (1,65). Cilj ovog rada je pružiti usporedbu kliničke i histološke dijagnoze te ostalih vrednovanih parametara između dviju skupina djece; laparoskopski i klasično apendektomirane. U radu je analizirano 330 djece sa sumnjom na akutni apendicitis, u dobi od dvije do 19 godina, koja su u razdoblju od 2013. do 2016. hospitalizirana i liječena na Zavodu za dječju kirurgiju u Kliničkom bolničkom centru Zagreb. Omjer dječaka i djevojčica je 1.34:1. Sva su djeca apendektomirana; njih 83.6% laparoskopski, a 16.4% klasičnom operacijom, kojima su pridruženi i slučajevi kada je došlo do konverzije iz laparoskopske u klasičnu apendektomiju. Podudaranje makroskopskog nalaza operatera i mikroskopskog nalaza patologa ne bilježi se u velikom postotku. U skupini laparoskopsko apendektomiranih nalazi su se podudarali u 46.2%, a kod klasično apendektomiranih u 35.2% slučajeva. Veće vrijednosti Alvarado bodova (≥7 u prosjeku) upućuju na flegmonozni ili gangrenozni stadij akutnog apendicitisa. Perforacija crvuljka rjeđa je pojava kod laparoskopsko apendektomiranih (10.2% naspram 32%). Od svih inocentnih crvuljaka, njih 90% pronađeno je kod djece koja su laparoskopsko apendektomirana. K tomu je negativna apendektomija češća pojava među djevojčicama (19.9%) nego li među dječacima (6.3%). Peritiflitički apsces kao posljedica perforacije, češći je intraoperativni nalaz u skupini KA (66.7% svih peritiflitičkih apscesa). Komplikacije apendektomije, infekcija kirurške rane te instraabdominalni apsces pojavljuju se po sličnom obrascu; vrlo rijetko i bez statistički značajne razlike među skupinama.Abdominal pain is one of the most common causes of emergency department admissions and acute appendicitis is one of the most frequent surgical emergencies in children. To diagnose acute appendicitis and make a decision about appendectomy in the pediatric population is still challenging nowadays, even for experienced clinicians. In fact, the clinical diagnosis represents a synthesis of the medical history, physical examination, laboratory tests and radiographic imaging. An unrecognized diagnosis or delayed surgical removal of an inflamed appendix may result in complications such as perforation, abscess and peritonitis. On the other hand, due to clinical conditions that are similar to acute appendicitis, clinicians' decisions about appendectomy lead to an unnecessary removal of the appendix in 15-30% of cases (1,65). The aim of this study was a comparison of the clinical and histological diagnosis, and other valued parameters between two groups of children: those who underwent laparoscopic and those who had a classic appendectomy. 330 children aged two to 19 years, who were admitted to the Department of Pediatric Surgery at the University Hospital Centre Zagreb, in the period between 2013 and 2016 under suspicion of acute appendicitis, were analyzed in this study. The boys to girls ratio was 1.34:1. All of the children underwent the appendectomy; 83.6% of them had a laparoscopic, and 16.4% a classic procedure. The latter group also comprised those cases who were converted from laparoscopic to classic appendectomy. Concordance between the macroscopic surgical and microscopic pathological diagnoses was low. In the group of laparoscopic appendectomy, the diagnoses were correlated in 46.2%, and among those who underwent classic appendectomy in 35.2% of the cases. Higher Alvarado scores (average ≥7) point to phlegmonous or gangrenous acute appendicitis. A perforated appendix was less common among children who underwent laparoscopic appendectomy (10.2% in comparison with 32% in the other group). 90% of all innocent appendices were found in the laparoscopic appendectomy group. Furthermore, the negative appendectomy rate was higher among girls (19.9%) than boys (6.3%). Periappendiceal abscess after perforation was a more common intraoperative assessment in the classic appendectomy group (66.7% of all abscesses). Complications associated with appendectomy, infection of the surgical site and intraabdominal abscess, had the same incidence pattern – they occured rarely and with no statistically significant difference between the groups

Analiza komunikacije hrvatskih nogometnih reprezentativaca u medijima

Bez komunikacije ne bi bilo moguće zamisliti život, niti obavljanje svakodnevnih aktivnosti. Neki ljudi u svojoj komunikaciji, ovisno o subjektima s kojima komuniciraju, mogu imati bolje ili lošije komunikacijske vještine. Ipak, od javnih osoba očekuje se da pokažu višu razinu komunikacijskih sposobnosti. No to nije slučaj, jer, iako se komunikacija može naučiti ili unaprijediti, veliki je dio takvih vještina urođen i svojstven svakom pojedincu. Analizirajući govore ikona hrvatskog nogometa - Zlatka Dalića, Luke Modrića, Šime Vrsaljka i Dejana Lovrena - evidentno je da je komunikacija složena, a retorika i govorne izvedbe svakog od njih specifične su po svim elementima.It’s not possible to imagine life without communication, nor to perform daily activities. Some people may have better or worse communication skills, depending on the subjects they communicate with. Nevertheless, public figures are expected to demonstrate a higher level of communication skills. But this is not the case, because although communication can be learned or improved, much of such skill is innate and inherent in every individual. By analysing speech of the icons of Croatian football, Zlatko Dalić, Luka Modrić, Šime Vrsaljko and Dejan Lovren, it is evident that the communication is complex and the rhetoric and speech performances of each of them are specific in all elements