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Uvod: Do sada su poznati brojni prediktori tromboze aurikule lijevog atrija, no u tom je području još uvijek mnogo nepoznanica, pogotovo kada je riječ o genetskim prediktorima. Cilj ovoga istraživanja bio je pronaći genski marker koji može biti prediktor tromboze i time poboljšati procjenu tromboembolijskog rizika. Metode i ispitanici: Dizajnirana je opservacijska, unicentrična, retrospektivna studija koja je uključila ukupno 181 bolesnika s atrijskom fibrilacijom. Primarni ishod istraživanja bio je detekcija tromba u aurikuli lijevoga atrija, a svim bolesnicima rađena je genska analiza na - 455 G/A polimorfizam gena za β lanac fibrinogena. Rezultati: Nakon provedene metode uparivanja prema vjerojatnosti sklonosti dviju skupina bolesnika, niti jedna ispitivana varijabla, uključujući polimorfizam - 455 G/A beta-fibrinogena, nije se pokazala neovisnim prediktorom tromboze aurikule lijevog atrija. Rasprava: Rezultati istraživanja u skladu su s do sada objavljenim studijama, gdje još uvijek postoji nesklad u rezultatima te su neka istraživanja pronašla povezanost - 455 G/A polimorfizma s trombogenezom, dok pak neka druga istraživanja nisu pronašla funkcionalnu vezu. Zaključak: Rezultati upućuju na to da tromboza aurikule lijevoga atrija nije neovisno povezana sa - 455 G/A polimorfizmom za β lanac fibrinogena te je vjerojatno posljedica interakcije između gena, te gena i okoliša. No za dokazivanje navedenoga bit će nužna daljnja istraživanja., Introduction: There are many predictors of left atrial appendage thrombosis, but still there are many unknown facts, articularly in the area of genetic predictors. Purpose of this study was to find genetic predictor of thrombosis and to enhance evaluation of thromboembolic risk. Methods: We conducted an observational, retrospective, unicentric study involving 181 patients with AF. Primary outcome of this study was to detect thrombus in left atrial appendage and all patients were scheduled for genetic analysis for - 55G/A β fibrinogen polymorphism. Results: After performing propensity score matching method, none of tested parameters, including - 455G/A polymorphism, were not independent predictors of left atrial appendage thrombosis. Discussion: This results are consistent with the results from many other studies in this field, where some studies have found functional relationship between thrombosis and - 455G/A polymorphism, but still many other studies have not found the same interaction. Conclusion: Results showed that left atrial appendage thrombosis is not independently related with - 455G/A polymorphism for β chain of fibrinogen. It’s probably consequence of interactions between genes, and genes and environment. However, to confirm such statement we need to conduct more research in the future.

Background—Current guidelines do not recommend routine use of transesophageal echocardiography (TOE) in anticoagulated patients with atrial fibrillation (AF). The aim of our study was to identify predictors for left atrial thrombosis (LAT) in patients with AF that would require TOE despite anticoagulation therapy, using clinical, laboratory and echocardiographic data which are usually obtained in those patients in a real-world setting. Methods—We analyzed data from electronic medical records (EMR) of consecutive AF patients referred to two university hospitals between January 2014 and December 2017 for pulmonary vein isolation (PVI) or direct current cardioversion. The primary endpoint was the presence of left atrial thrombus on TOE. Multivariable and univariable logistic regression models were computed using variables that were significantly different between the LAT and the control groups. Results—A total of 838 patients were included, of whom 132 (15.8%) had LAT. After controlling for other variables, only the left ventricle ejection fraction (LVEF) remained statistically significant with an OR of 0.956 (95% CI 0.934–0.979), p < 0.01. Regression models including LVEF had significantly higher areas under the receiver operating characteristic (ROC) curves, including in subgroups with non-high thromboembolic risk (CHA2DS2-Vasc = 0 or 1), with an area under the curve (AUC) of 0.76 (95% CI 0.71–0.81), p < 0.0001. Conclusions—The LVEF is an independent predictor of LAT, and it might improve thromboembolic risk stratification in future models. LVEF significantly increased the predictive value of the CHA2DS2-Vasc model and was able to identify LAT in non-high-risk patients.

Introduction: Pectus excavatum, a deformity of the sternum and ribs caused by an unbalanced costochondral hypertrophy, is a congenital abnormality with a prevalence of 1/1000 and it is commonly considered to be an incidental finding without clinical significance. In more advanced cases there may be a considerable compression and relocation of thoracic organs which can lead to serious cardiac or respiratory symptoms.1-3 Case report: 19-year-old male patient was admitted for two-month history of palpitations, shortness of breath and continuous chest pain. Physical exam showed significant pectus excavatum and thoracic lordosis with otherwise normal findings. Resting 12-lead ECG and laboratory tests were normal, including cardiac troponin T levels. 24-hour ECG revealed premature ventricular beats with a paroxysm of non-sustained ventricular tachycardia. Echocardiography (Figure 1) showed normal biventricular size and function and raised suspicion of a large tumor mass compressing the left atrium (LA). No obvious signs of flow obstruction in LA using color and spectral Doppler were noticed. Mitral valve showed billowing of the anterior leaflet with otherwise normal valve function. The next diagnostic step was thoracic CT scan (Figure 2) which revealed extremely thin sagittal thoracic diameter with vertebrae compressing posterior wall of the LA and no signs of a tumor mass. Exercise stress test showed normal functional capacity with no signs of ischemia or arrhythmias in ECG. Patient was started on minimal dose of bisoprolol and follow up 24-hour ECG showed no ventricular arrhythmias. Since CT scan is the gold standard for determining the severity of the pectus excavatum defect, pectus severity index (PSI) was calculated and in our patient the value was 4.8. A normal chest has an average PSI of 2.5 and patients with a PSI of >3.25 are considered candidates for surgery. Patient was scheduled for additional respiratory function tests and will be referred to thoracic surgeon. Conclusion: Severe cases of pectus excavatum can have significant impact on cardiorespiratory function and in those patients, surgery should be considered. On echocardiography, LA compression by vertebrae can even mimic a tumor mass but thoracic CT scan is a gold standard for diagnostic and severity assessment of this condition.

Android aplikacija za praćenje trudnoće izrađena u ovom diplomskom radu namijenjena je za sve buduće majke koje žele podatke o svojoj trudnoći pohranjivati na svom pametnom telefonu. Za početka korištenja aplikacije potrebno je izvršiti registraciju te prijavu u sustav. Prijava može biti lokalna te putem Facebook ili Gmail usluge. Nakon prve prijave, potrebno je upisati važne informacije kao što su osobna anamneza, obiteljska anamneza, krvna grupa, datum koji je određen kao datum poroda i dr. Budući da je u periodu trudnoće potrebno pratiti određene parametre koji ukazuju na zdravlje majke i djeteta (krvni tlak, prirast mase, edemi itd.), a koji se očitavaju na redovitim zdravstvenim pregledima, korisnice aplikacije imaju mogućnost pohranjivanja vrijednosti spomenutih parametara u obliku kartica. Kako bi trudnice imale normalnu trudnoću, potrebna je i pravilna prehrana te svakodnevna fizička aktivnost pa se, prema tome, u aplikaciji prikazuju programi prehrane i treninga namijenjenih isključivo za trudnice. Nadalje, otvoren je i forum na kojemu korisnice mogu postavljati pitanja anonimno te odgovarati na ista. Korisnice također mogu koristiti i oblik društvene mreže na kojoj mogu javno postavljati slike vezane za svoju trudnoću. Android application for pregnancy monitoring is developed for all future mothers who want to store data about their pregnancy on their smartphones. Registration and login is required to use all appliaction features. Login can be achieved using standard local creadentials or by using Facebook of Gmail services. After the user has registered for the first time its required to enter some personal information like personal anamnesis, family anamnesis, birth date, blood type etc. Since it is necessary to monitor specific parameters during pregnancy which affect the health of mother and child (blood pressure, weight gain etc.) and which are monitored by regu-lar medical check-up, users are able to store mentioned parameters in form of cards. To ensure that pregnant women have normal pregnancy process its important for them to have proper nutrition and everyday execises. Thera are nutrition and exercise programs implemented in app to help them with that. Furthermore, there is a forum that users can use to post anonymous questions and to answer them. Users can also use kind of a social network to share their favorite pregnancy images.

This paper deals with practical details of rounding system testing procedures in high-voltage substations. First, the low voltage U-I test method and the relevant legislation are presented. Next, the problems with practical implementation of the method and interpretation of the legislative are extensively described. At the end, the critical overview of the presented method considering possible influence on the decision-making process is given.

This paper deals with practical details of grounding system testing procedures in high-voltage substations. First, the low voltage U-I test method and the relevant legislation are presented. Next, the problems with practical implementation of the method and interpretation of the legislative are extensively described. At the end, the critical overview of the presented method considering possible influence on the decision-making process is given. Članek predstavlja praktične podrobnosti sistema testiranja ozemljitve v visokonapetostnih podpostajah. Na začetku je predstavljena nizkonapetostna U-I testna metoda in pripadajoča zakonodaja. V nadaljevanju je podrobno opisana problematika praktične implementacije metode in interpretacije zakonodaje. V zaključku je podan kritičen pregled predstavljene metode z ozirom na možne vplive na postopek sprejemanja končne odločitve.

Problem sa kojim se susrećemo je određivanje ispodgodišnje kamatne stope koja će odgovarati zadanoj godišnjoj kamatnoj stopi. Uvođenjem relativne i konforme kamatne stope rješavamo taj problem. Relativna kamatna stopa je godišnja kamatna stopa podijeljena sa brojem ukamaćivanja tijekom godine. Konformnu kamatnu stopu smo uveli da nam iznos kamata ne bi ovisio o broju ukamaćivanja, ona daje isti iznos kamata kao i godišnja kamatna stopa sa jednim ukamaćivanjem. Web aplikacija za problem rješavanja problema konformne i relativne kamatne stope olakšava izračun kamatnog računa i prikazuje razliku između korištenja različitih vrsta kamatnjaka te prikazuje njihov utjecaj na kamate Equivalent interest rates are nominal interest rates with different compounding periods that result in the same future value of a given principal for any fixed period of time. Equivalent interest rates are used to compare the interest rates between loans and investments that have different compounding periods. This web application is build to help calculate problem between equivalent and real interest rate. By using the web application calculator it can show resulting compound interest rate, real interest rate and principal sum calculation for chosen figures and shows their influence on interest rate.

U ovom završnom radu opisana je Android platforma i zadatak je bio upoznati se s karakteristikama njene arhitekture. Zatim je izrađena aplikacija „Moje dijete“ u programskom jeziku Java koja služi kao zamjena za dnevnike koji sadrže podatke o rastu i razvoju djece tzv. radosnice. U aplikaciju se mogu unositi podaci o više osoba. Aplikacija ima mogućnost popunjavanja i izmjene postojećih podataka te dodavanje novih podataka. Korisnik može zabilježiti i fotografiju svoga djeteta. U programskom kodu definirane su instrukcije za svaku tipku, tekstualno polje, okvir za označavanje i okvir za fotografiju. Spomenute su i raznolike funkcije za povezivanje aktivnosti koje predstavljaju pregled svakog ekrana. Svi podaci spremaju se u bazu podataka koja je stvorena također u programskom kodu. Također, definiran je i podsjetnik koji ima zadatak da podsjeti korisnika o važnim događajima vezanim za dijete. Aplikacija je uspješno razvijena te je namjenjena za dugoročno korištenje. This final paper describes Android platform and the assigment which was to find out what are the characteritic of Androids architecture. In addition, the application called My child has been developed in Java programming language. The application is used as a replacement for journals which are gathering data about childs growth and evolution. You can store data for more persons. The application has ability of filling out and chaning already existing data and adding new data. User can also enter photo of baby. In program code are written instructions for each button, text box, check box and image box. Also, there are mentioned functions for connecting activities which are representing every display view. All data is stored into database which was created and defined in code. There is also a reminder of important events in baby's life. The application is successfully developed and it is made for long term using.

Antikoagulansi su u činkovitiji od acetilsalicilatne kiseline (ASK) u prevenciji tromboembolizma u pacijenata s fibrilacijom atrija (FA), bez dodatnog povećanog rizika za krvarenje. Unatoč jasnim dokazima za ograničenu korisnost i slabu sigurnost ASK, kao i umanjenu ulogu ASK u trenutnim smjernicama, ista se vrlo često koristi u terapiji kod pacijenata s FA. Cilj istraživanja bio je povezati terapiju ASK-om i prevalenciju tromba lijevoga atrija u pacijenata s FA.

Analiza tokova snaga i n-1 analiza sigurnosti obavljena je za očekivano stanje mreže Prijenosnog područja Osijek za predviđeno razdoblje neraspoloživosti DV 110 kV Đakovo - EVP Andrijevci. Bilo je potrebno predvidjeti opterećenja u sustavu, proizvodnju te nekoliko uklopnih stanja elemenata mreže bliskih predmetnom vodu. Prvenstveno se razmatra stanje sigurnosti pogona mreže na potezu od TS 220/110 kV Đakovo do TS Međurić, a radi neraspoloživosti DV 110 kV Đakovo-EVP Andrijevci. Iz rezultata analize sa stajališta sigurnosti ponuđena su najprihvatljivija rješenja za povećanje i održavanje razine sigurnosti prijenosne mreže i ovog dijela EES-a u razdoblju neraspoloživosti DV 110 kV Đakovo- EVP Andrijevci.

This paper presents conceptual picture of new stability control possibilities in power system control center. Future state of power system operations and control, concerning stability assessment, is described and compared to present state. New technologies have raised the possibility of developing much faster and more wide-area stability control that can allow safe operation of the grid closer to its limits.

This paper presents a conceptual picture of new stability control possibilities in power system control centres. A potential future state of power system operations and control, with regard to stability assessment, is described and compared to the present state. New technologies have raised the possibility of developing much faster and more widespread stability control that can enable the safe operation of the grid closer to its limits. Članek predstavlja konceptualno sliko novih možnosti nadzora stabilnosti v nadzornem centru elektroenergetskega sistema. Opisana je primerjava med prihodnjim in sedanjim stanjem na področju poslovanja in nadzora, povezano z oceno stabilnosti. Nove tehnologije so odprle hitrejše možnost razvoja in nadzora širokega področja stabilnosti, ki lahko omogoči varno delovanje omrežja v področju skrajnih mej.

U referatu je opisan postupak mjerenja parametara kvalitete električne energije u prijenosnoj mreži na primjeru mjerenja na sučelju prijenosne i distribucijske mreže. Parametri su mjereni pomoću uređaja za trajni nadzor parametara kvalitete električne energije u 1008 10-min perioda u razdoblju od tjedan dana. Mjerene su efektivne vrijednosti linijskih napona, frekvencija, ukupno harmonijsko izobličenje (THD) te kratkotrajni (P_st) i dugotrajni (P_lt) flikeri. Rezultati mjerenja vrednovani su sukladno odredbama trenutno važećih Mrežnih pravila elektroenergetskog sustava.

U prijenosnom području Osijek se za kritično (zimsko) razdoblje izrađuje pregled očekivanih energetskih prilika, što se uglavnom odnosi na očekivana opterećenja u mreži. Prognoziranje opterećenja u elektroenergetskom sustavu provodi se kao pomoć operativnom osoblju u mrežnom centru pri procjeni sigurnosti djelovanja elektroenergetskog sustava i pomoć pri upravljanju samim sustavom. Utvrđivanje i analiza u budućnosti očekivane potrošnje električne energije za bazno razdoblje se provodi na temelju podataka o ostvarenoj potrošnji u prethodnom razdoblju. Uvođenje EMS (Energy Management System) u sklopu novih funkcija vođenja sadrži kratkoročne i dugoročne prognoze opterećenja koje za osnovu koriste povijesnu bazu podataka o stanju promatranog sustava i opterećenja uvažavajući meteorološku povijesnu bazu podataka. U referatu će biti prikazana postojeća metoda određivanja opterećenja i pripreme radi smanjenja rizika od prisilnih zastoja tijekom kritičnih razdoblja i bit će opisana prognoza opterećenja u Network Manager sustavu.

3. Vaidiyanathan D, Prabhakar D, Selvam K, Alagesan R, Thirunavukarasu N, Muthukumar D. Isolated congenital left ventricular diverticulum in adults. Indian Heart J. 2001;53(2):211-3. Congenital diverticulum of the left ventricle is a very rare cardiac anomaly due to local embryological developmental failure. We present a case of a 22-year old male patient. He is a former athlete who as a part of preoperative examination for the planned right knee surgery made an ECG which showed signs of left ventricular hypertrophy. Two-dimensional transthoracic echocardiography revealed rare congenital heart disorder in the form of large left ventricular apical diverticulum. Diverticulum measured 5.2x2.4 cm and occupied left ventricular apex with an entrance width of 2.3 cm. Diverticulum exhibited good wall contractility with three layer structure, accentuated trabeculations as well as aberrant cords imitating third AV valve at the diverticular entry. Overall, diverticulum appeared much alike small third ventricle. The patient had normal coronary angiography findings, negative family history of sudden cardiac death and normal 24hour Holter ECG — sinus rhythm without arrhythmias. Taking into account these points, mainly the absence of associated other cardiac abnormalities and since the patient was asymptomatic we decided to follow up the patient without surgical treatment.

1 Medicinski fakultet Sveucilista u Zagrebu, Klinicki bolnicki centar Zagreb, Zagreb, Hrvatska 2 Klinicki bolnicki centar Sestre milosrdnice, Zagreb, Hrvatska 1 University of Zagreb School of Medicine, University Hospital Centre Zagreb, Zagreb, Croatia 2 University Hospital Center “Sestre milosrdnice“, Zagreb, Croatia KLJUCNE RIJECI: fibrilacija atrija, acetilsalicilatna kiselina, tromb, transezofagijski ultrazvuk.

AIM: To evaluate the primary health care information system from the general practitioner's (GP) point of view. ----- METHODS: Sixty-seven Croatian GPs were distributed a questionnaire about characteristics of the GP's office, overall impression of the application, handling of daily routine information, more sophisticated information needs, and data security, and rated their satisfaction with each component from 1 to 5. We also compared two most frequently used applications--application with distantly installed software (DIS) and that with locally installed software (LIS, personal computer-based application). ----- RESULTS: GPs were most satisfied with the daily procedures and the reminder component of the health information system (rating 4.1). The overall impression ranked second (3.5) and flexibility of applications followed closely (3.4). The most questionable aspect of applications was data security (3.0). LIS system received better overall rate than DIS (4.2 vs 3.2). ----- CONCLUSION: Applications received better ratings for daily routine use than for overall impression and ability to get specific information according the GPs' needs. Poor ratings on the capability of the application, complaints about unreliable links, and doubts about data security point to a need for more user-friendly interfaces, more information on the capability of the application, and a valid certificate of assessment for every application.

U članku je istražen utjecaj ograniĉenja prijenosnih kapaciteta spojnih dalekovoda na pouzdanost prijenosne mreţe. Istraživanje je obavljeno na stvarnom primjeru modela prijenosne mreţe Slavonije i Baranje u programskom paketu DIgSilent Power Factory. U prvom trenutku uspostavljeni su tranziti električne energije pribliţni stvarnim tranzitima na karakterističnu srijedu mjeseca sijeĉnja 2012. godine. Analizirani su pokazatelji pouzdanosti kod ovakvih tranzita pri nazivnom i smanjenom prijenosnom kapacitetu spojnih dalekovoda. Nakon toga uspostavljeni su povećani tranziti električne energije te je izvršena analiza promjene pokazatelja pouzdanosti u slučaju smanjenja prijenosnih kapaciteta.

U referatu je analiziran utjecaj izgradnje planiranih postrojenja u prijenosnoj mreţi Slavonije i Baranje na tokove snaga, te N-1 kriterij sigurnosti. Izgradnja razmatranih objekata predviđena je indikativnim srednjoročnim planom razvoja hrvatske prijenosne mreţe. Prijenosna mreţa Slavonije i Baranje modelirana je u programskom paketu PSS/E. U modelu je uzet u obzir pretpostavljeni porast potrošnje, odnosno opterećenja u budućnosti, očekivane razmjene i tranzita sa susjednim elektroenergetskim sustavima. Nakon modeliranja planiranih objekata u prijenosnoj mreţi Slavonije i Baranje, te analize prilika u novonastaloj mreţi, bit će dana usporedba s trenutnim stanjem.

Uzemljivački sustav važan je dio svakog elektroenergetskog sustava u pogledu njegove ispravne funkcije, ali i u pogledu sigurnosti ljudi i pripadajuće imovine. Održavanje uzemljivača provodi se u skladu s važećim propisima odnosno normama. U cilju učinkovitog održavanja potrebno je posjedovati ispravnu i potpunu zakonsku regulativu. U radu su opisani neki detalji primjene važećeg Pravilnika pri mjerenju naponskih prilika na uzemljivaču visokonaponskog postrojenja isključivo u cilju napretka budućih verzija Pravilnika.

Cardiologia CROATICA Case presentation: A 40-year-old man presented with shortness of breath, pleuritic chest pain and tachycardia. Five weeks before, the patient was admitted to the hospital due to the fracture of the fifth metatarsal bone of the left foot. The patient was put in a cast for 4 weeks. Pulmonary embolism (PE) was confirmed by a ventilation/perfusion lung scan. Immediately after admission, the patient started to complain about a sharp pain in his right lumbar region. Echocardiography revealed a dilated right ventricle and pulmonary hypertension of 70 mmHg (Figure 1). A CT-angio scan confirmed a massive PE and showed an infarction of the right kidney (Figure 2). Thrombosis of the left popliteal vein was confirmed by ultrasound. Transesophageal echocardiography revealed a patent foramen ovale (Figure 1). After the initial treatment with low molecular weight heparin, the patient became hypotensive and elevated levels of troponin were registered. The patient was transferred to the Coronary Care Unit and treated with alteplase. After the treatment, a normalisation in the both right ventricle diameter and right ventricular systolic pressure was noted. The patient was hemodynamically stable with full regression of his symptoms. A postprocedural Doppler ultrasound showed recanalisation of the right renal artery. Conclusion: Paradoxical embolism and intracardiac shunt should be immediately considered when PE and systemic arterial embolism co-occur. Treatment mainly consists of thrombectomy or thrombolysis.

The paper analyzes the problem of long transmission lines drive and the possibility of applying of capacitive series compensation. It deals with the voltage on the lines and the influence of the degree of compensation to the transmission capacity and the stability of the steady state network voltage. The first aspect of the analysis is the problem of increased transmission line load when there is a necessity to relieve the load from the reactive power in order to convey as much real power through the line, reduce losses and maintain voltage within limits. Another aspect of the analysis is very small load or idle line, when the Ferranti effect leads to an extremely high voltage at the end of the line., U radu se analizira problematika pogona dugih prijenosn serijske kapacitivne kompenzacije. Razmatraju se naponske prilike na vodov ih vodova i mogućnost primjene ima te utjecaj stupnja kompenzacije na prijenosnu moć i na stabilnost napona u stacionarnom stanju mreže. Prvi aspekt analize je problematika povećanog opterećenja voda kada postoji nužna potreba rasterećenja voda od jalove snage kako bi se vodom prenijela što veća djelatna snaga, smanjili gubici i održao napon unutar dopuštenih granica. Drugi aspekt analize je izrazito malo opterećenje ili prazan hod (PH), kada zbog Ferrantijeva efekta dolazi do izrazito visokog napona na kraju voda.

The paper analyzes the problem of long transmission lines drive and the possibility of applying of capacitive series compensation. It deals with the voltage on the lines and the influence of the degree of compensation to the transmission capacity and the stability of the steady state network voltage. The first aspect of the analysis is the problem of increased transmission line load when there is a necessity to relieve the load from the reactive power in order to convey as much real power through the line, reduce losses and maintain voltage within limits. Another aspect of the analysis is very small load or idle line, when the Ferranti effect leads to an extremely high voltage at the end of the line.

Nakon dužeg hidrološki nepovoljnog razdoblja, što je utjecalo na znatno smanjenje ukupnog sadržaja akumulacija Republike Hrvatske, uslijedilo je hidrološki povoljno razdoblje (koje traje od sredine studenog 2008. godine sve do sredine veljače 2009. godine). U ovom radu prikazana je periodična promjena odnosa proizvodnje termoelektrana i hidroelektrana za vrijeme hidrološki povoljnog razdoblja, kao i promjena udjela razmjene (uvoza) električne energije. Grafički je prikazan udio proizvodnje termoelektrana i hidroelektrana u ukupnoj dnevnoj potrošnji te stanje akumulacija u spomenutom vremenskom periodu. Problemi se javljaju zbog smanjene proizvodnje termoelektrana, te maksimalne proizvodnje hidroelektrana. Većina susjednih TSO-a ima jednake ili slične probleme povećane proizvodnje hidroelektrana uslijed čega dolazi do povećanih tokova radne snage na 400 kV, 220 kV i 110 kV nadzemnim vodovima od sustavnog značaja elektroenergetskog sustava Hrvatske.

In the alternating current systems, due to insufficient possibilities of electric energy storage, generation and load have to be in balance at all times. When an adequate power generation is possible, the active power flows from the area of higher generation to the areas where power demand is increased. For that flow, the active power uses any disposable parallel routes through the power network. The presence of large power and low impedance transmission lines highly contribute to the forming of the loop through which the power flow is to pass. In explanation, in every transmission system there are some smaller and larger loops through which an uneven and unregulated power flow passes. By introduction and liberalization of electricity markets, separation of generation, transmission and distribution, and increase in the interchange of electric energy among the subjects on the market, there appeared the need for an efficient power current management in transmission networks. Phase shifting transformers may be used in power flow control in a complex power network very efficiently

U ovom radu promatra se utjecaj ugradnje transformatora s poprečnom regulacijom u prijenosnu mrežu Slavonije i Baranje. Promatra se i odabir mjesta ugradnje takvog transformatora s obzirom na proizvedene gubitke u mreži.

Komplexchemische Umsetzungen von Übergangsmetall(I)- und (II)-Komplexen mit symmetrischen Fluoreszenz-Farbstoffen vom DPP-Typ. Darstellung eines monoalkylierten unsymmetrischen DPP-Farbstoffs und dessen komplexchemischen Umsetzungen mit Gold(I)-Verbindungen. Synthese von Perylen-Komplexen aus dem Farbstoff S13NH und Gold(I)-, Palladium(II)- und Platin(II)-Komplexen.