Izvlačilište brodova u remontnom brodogradilištu

Cilj zadatka je dati prijedlog poboljšanja izvlačilišta u remontnom brodogradilištu. U uvodu se govori o remontu kao djelatnosti koju brodovi moraju obaviti da bi bili u funkciji. U drugom poglavlju se govori o samom procesu porinuća brodova te o mogućim načinima odnosno vrstama porinuća, dok se u trećem poglavlju govori o izvlačenju brodova slipnim uređajem i opremi koja je potrebna pri takvom načinu izvlačenja. Obzirom na stanje u kojem se trenutno izvlačilište nalazi, kroz četvrto poglavlje su dani prijedlozi rješenja obnove izvlačilišta u brodogradilištu

Radni katamaran za ribogojilišta

Cilj ovog diplomskog zadatka je od postojećeg radnog katamarana, koji je u potpunosti izrađen od aluminija, izraditi projekt katamarana s čeličnim trupom te aluminijskim nadgrađem. Napravljeni su proračuni strukturnih dimenzija aluminijskog i čeličnog trupa, te proračun masa i centracija masa tih trupova. Uzimajući u obzir činjenicu da katamaran s čeličnim trupom ima veću masu, učinjena je i transformacija forme trupa radi potrebnog povećanja istisnine. S obzirom da se radi o iterativnom procesu, na transformiranoj formi ponovljen je proračun strukturnih dimenzija i centracija masa, te su napravljeni preliminarni proračuni stabiliteta i otpora

Hydrodynamical and radiative modeling of temporal H{\alpha} emission V/R variations caused by a discontinuous mass transfer in binaries

H{\alpha} emission V/R variations caused by a discontinous mass transfer in interacting binaries with a rapidly rotating accreting star are modelled qualititatively for the first time. The program ZEUS-MP was used for a non-linear 3-D hydrodynamical modeling of a development of a blob of gaseous material injected into an orbit around a star. It resulted in the formation of an elongated disk with a slow prograde revolution. The LTE radiative transfer program SHELLSPEC was used to calculate the H{\alpha} profiles originating in the disk for several phases of its revolution. The profiles have the form of a double emission and exhibit V/R and radial velocity variations. However, these variations should be a temporal phenomenon since imposing a viscosity in given model would lead to a circularization of the disk and fading-out of given variations.Comment: accepted for a publication in Astronomical Journa

Severe Generalized Periodontitis in a Patient with an Aplastic Anemia: a 5 Year Follow-up Case Report

Aplastična anemija hematološka je bolest koju obilježava pancitopenija. U ovom prikazu slučaja opisana je mlada pacijentica s neliječenim parodontitisom povezanim s hematološkim bolestima i ciklosporinskom terapijom. Parodontna terapija provedena je u dva uzastopna dana, a sastojala se od nekirurške i antibiotske terapije uz dodatak antifibrinolitičke terapije. Obavljeni su mikrobiološki PCR testovi i testiranje parodontitis IL-1 polimorfizma. Nakon parodontne terapije upala se povukla te su izrađene mobilne parcijalne proteze. Nakon petogodišnjeg praćenja pacijentica je imala plitke dubine sondiranja unatoč izostanku suradnje tijekom faze održavanja. Aplastična anemija povećava rizik od pojave težih oblika parodontitisa koji dodatno mogu biti komplicirani ciklosporinskom terapijom. Parodontna terapija kod ovakvih pacijenata mora biti dopunjena antibioticima.Aplastic anemia is a hematological disorder characterized by pancytopenia. This case report presents a young patient with untreated periodontitis associated with hematological disorders, and cyclosporine therapy. During 2 consecutive days, periodontal therapy which consisted of nonsurgical therapy supplemented with an antibiotic treatment and antifibrinolytic therapy was performed. Commercial microbiological PCR tests and periodontitis IL-1 polymorphism risk test were performed. Following the periodontal therapy, the inflammation was resolved and the patient’s occlusion was restored by means of removable partial dentures. After the 5 year follow-up, the patient still remained with shallow probing depths although there was inadequate compliance during the maintenance phase. Aplastic anemia increases the risk of onset of severe forms of periodontitis that can be additionally complicated with cyclosporine therapy. In such patients, periodontal therapy must be supplemented with antibiotics

Periodontal Disease and its Association with Angiographically Verified Coronary Artery Disease

Uvod: Svrha ovog istraživanja bila je ispitati povezanost agresivnoga i kroničnog parodontitisa s težinom koronarne arterijske bolesti potvrđene koronarnom angiografijom. Materijal i metode: Ispitanici su bili hospitalizirani bolesnici Kliničkoga bolničkog centra Zagreb kojima je zbog boli u prsima obavljena koronarna angiografija. Temeljiti klinički pregled sastojao se od bilježenja parodontoloških indeksa te kliničkih i socijalno-demografskih parametara. Ispitanici su bili podijeljeni u dvije skupine: ispitivanu – u njoj su sudjelovali bolesnici s akutnim koronarnim sindromom (ACS-om) i stabilnom koronarnom arterijskom bolesti (CAD-om) i kontrolnu – s ispitanicima bez značajne koronarne arterijske bolesti. Podatci su analizirani Kruskal-Wallisovim i Pearsonovim hi-kvadrat testom. Rezultati: Od 106 ispitanika njih 66 (62,3 %) hospitalizirani su zbog ACS-a, a 22 (20,7 %) zbog stabilnoga CAD-a. Samo 18 sudionika u ispitivanju (17,0 %) nije imalo značajni CAD. Od ukupnoga broja bolesnika – 106, samo njih 26 (24,5 %) nikad nisu bili pušači (p < 0,05). Kronični parodontitis najčešći je nalaz u obje ispitivane skupine – 68,2 posto u skupini s ACS-om i 54,5 posto u onoj sa stabilnim CAD-om, a najviše zdravih pacijenta bez parodontitisa (72,6 %) bilo je u kontrolnoj skupini (p < 0,001). Skupina sa stabilnim CAD-om imala je najvišu srednju vrijednost dubine sondiranja (PD) 3,92 ± 1,16, recesije gingive (GR) 1,34 ± 0,78, razine kliničkog pričvrstka (CAL) 4,60 ± 1,41 i krvarenja pri sondiranju (BOP) 45,98 ± 26,19. U skupini s ACS-om PD je bio 3,77 ± 0,91, GR 1,11 ± 0,66, CAL 4,32 ± 1,08 i BOP 41,30 ± 22,09, a u kontrolnoj skupini izmjeren je PD 3,27 ± 0,97, GR 0,69 ± 0,37, CAL 3,62 ± 1,04 i BOP 26,39 ± 13,92 (p < 0,05). Zaključak: Parodontitis je povezan s angiografski potvrđenom koronarnom arterijskom bolesti. Kod bolesnika s ACS-om i stabilnim CAD-om zabilježeni su tjelesna neaktivnost, loša oralna higijena i parodontna upala.Purpose: The aim of this research was to investigate the association of chronic and aggressive periodontitis with the severity of coronary artery disease which was angiographically verified. Material and methods: Subjects were selected among the hospitalized patients at the University Hospital Centre Zagreb who had coronary angiography done because of the chest pain. Thorough clinical examination included periodontal indices and clinical and socio-demographic characteristics of participants. Subjects were divided in two test groups, acute coronary syndrome (ACS) and stable coronary artery disease (CAD), and the control group with no significant CAD. Data were analyzed using Kruskal-Wallis and Pearson’s Chi-Square test. Results: From 106 subjects, 66 (62.3%) were hospitalized for ACS, 22 (20.7%) had stable CAD and only 18 (17.0%) had no significant CAD. Only 26 (24.5%) out of 106 patients were never smokers (p<0.05). Chronic periodontitis was the most common finding with 68.2% in ACS group and 54.5% in stable CAD group, while healthy patients without periodontitis (72.6%) were dominant in the control group (p<0.001). Stable CAD group had the highest mean probing depth (PD) 3.92±1.16, gingival recession (GR) 1.34±0.78, clinical attachment level (CAL) 4.60±1.41 and bleeding on probing (BOP) 45.98±26.19 values, whereas ACS group had mean PD value of 3.77±0.91, GR 1.11±0.66, CAL 4.32±1.08 and BOP 41.30±22.09, and no significant CAD group had mean PD value of 3.27±0.97, GR 0.69±0.37, CAL 3.62±1.04 and BOP 26.39±13.92 (p<0.05). Conclusion: Periodontitis was shown to be associated with angiographically verified coronary artery disease. Physical inactivity, poor oral hygiene and periodontal inflammation were observed in patients with ACS and stable CAD

Exploring the Variable Sky with LINEAR. III. Classification of Periodic Light Curves

We describe the construction of a highly reliable sample of ~7000 optically faint periodic variable stars with light curves obtained by the asteroid survey LINEAR across 10,000 deg^2 of the northern sky. The majority of these variables have not been cataloged yet. The sample flux limit is several magnitudes fainter than most other wide-angle surveys; the photometric errors range from ~0.03 mag at r = 15 to ~0.20 mag at r = 18. Light curves include on average 250 data points, collected over about a decade. Using Sloan Digital Sky Survey (SDSS) based photometric recalibration of the LINEAR data for about 25 million objects, we selected ~200,000 most probable candidate variables with r < 17 and visually confirmed and classified ~7000 periodic variables using phased light curves. The reliability and uniformity of visual classification across eight human classifiers was calibrated and tested using a catalog of variable stars from the SDSS Stripe 82 region and verified using an unsupervised machine learning approach. The resulting sample of periodic LINEAR variables is dominated by 3900 RR Lyrae stars and 2700 eclipsing binary stars of all subtypes and includes small fractions of relatively rare populations such as asymptotic giant branch stars and SX Phoenicis stars. We discuss the distribution of these mostly uncataloged variables in various diagrams constructed with optical-to-infrared SDSS, Two Micron All Sky Survey, and Wide-field Infrared Survey Explorer photometry, and with LINEAR light-curve features. We find that the combination of light-curve features and colors enables classification schemes much more powerful than when colors or light curves are each used separately. An interesting side result is a robust and precise quantitative description of a strong correlation between the light-curve period and color/spectral type for close and contact eclipsing binary stars (β Lyrae and W UMa): as the color-based spectral type varies from K4 to F5, the median period increases from 5.9 hr to 8.8 hr. These large samples of robustly classified variable stars will enable detailed statistical studies of the Galactic structure and physics of binary and other stars and we make these samples publicly available

Progressive web application for events

Aplikacija, sustav je dizajniran za streaming datotečnih podataka unutar kojih su pohranjeni podatci o događajima. Datotečni tok je realiziran korištenje Apache Kafka tehnologije, podatci se pohranjuju u PostgreSQL bazi podataka koja je za potrebe razvoja podignuta u Docker-u. Aplikacija podržava neograničenu količinu novih organizacija koje se mogu priključiti na tok podataka kako kreirajući tako i trošeći isti tok. Time se postiže fleksibilnost klijenata gledano prema organizacijama koje kreiraju događaje, a i prema klijentima koji mogu imati različita sučelja za vizualnu reprezentaciju događaja.Application, system is designed for real time data streaming which contain event data. Data stream is implemented using Apache Kafka technology, data is stored in PostgreSQL database which is composed using Docker. Application supports unlimited amount of new organizations which can write or read data in data streams. Using this approach we provide flexible number of clients which can have different visual representation of events

FIZLer web application for learning physics

Ovaj rad se bavi temom izrade web aplikacije za pomoć učenicima pri učenju fizike. Realizirana aplikacija omogućuje klijentima objavljivanje pitanja i međusobno odgovaranje, nakon što učenik shvati zadatak ima opciju razrješavanja objave. Mentori, profesori mogu razriješiti sve objave te se njihovi odgovori smatraju pouzdanima. Uz objavu pitanja kao i uz objavu odgovora moguće je priložiti i fotografiju rješenja. Klijenti imaju opcije pretraživanja po sadržaju objava te pregled objava pojedinog korisnika. U slučaju neprimjerenog ponašanja korisnici mogu biti privremeno ili trajno isključeni iz sustava aplikacije. U budućnosti uz suradnju sa CARNET-om u aplikaciju će se moći prijaviti svi učenici koristeći svoje @skole.hr elektronske pošte.This work's theme is development of web application for helping students learn physics. It’s implementation enables clients to post questions and mutuall responding with solutions, after a student understands solution he can resolve the post. Mentors, professors can resolve all discussions and their answers are considered reliable and correct. With the content of post or comment clients can contribute a picture of task or solution. Client have a search by post content option and view of single persons posts. In case of unacceptable behaviour clients can be temporary or permanently banned from using application. In future with support of CARNET all students will be able to log into the application using their @skole.hr e-mails