Introduction/Objective: A lung abscess is a localized purulent inflammation of lung tissue with necrosis and colliquation. We are presenting a rare case of lung abscess formation as a result of the COVID-19 viral infection. Case report: An 81-year-old male patient with typical complaints (fever, malaise, fatigue) was examined at a designated medical centre for COVID patients. A positive PCR test and radiology findings confirmed a COVID-19 infection. Medication was prescribed according to protocol and he was sent home. During the night, 36 hours after the onset of the first symptoms, the patient developed breathing difficulties and a persistent, irritating dry cough. He was admitted to the Covid Hospital Karaburma, where he received treatment for 35 days. On the 22nd day after being released, the patient was examined at the Emergency Medical Centre, Clinical Centre of Serbia, complaining of dyspnoea, occasional hemoptysis and fatigue. The working diagnosis was pulmonary embolism. A multislice CT scan was ordered only to reveal a pulmonary abscess at the base of the left lung. Conclusion: A lung abscess is a rare, but possible complication of a COVID-19 infection. Therefore, patients should be regularly monitored for an extended period of time following hospitalization.

Na prostoru Bosne i Hercegovine čuva se izvjestan broj predmeta koji se mogu determinirati kao kopče. Navedeni predmeti služili su u praktične svrhe, ali i kao dio dekorativnoga sadržaja. S obzirom na širok spektar predmeta koji su obrađeni, i datacijski okvir je razmjerno širi i kreće se od 1. stoljeća pa do perioda kasne antike i ranoga srednjeg vijeka.

In the first part of the paper, the continuity equation in the boundary layer for stationary two-dimensional flow is derived on the basis of the law of mass conservation. After that, using Newton's second law for control volume, the equation for the momentum was derived. Using the derived equations, the analysis was performed with respect to the influence of temperature. After that, on the basis of the energy balance, an energy equation was derived in which a viscous dissipation function was introduced, which enabled a wider application. At the end of the paper, the derived equations were applied to a specific calculation example from technical practice in the calculation of thermal quantities in a rectilinear sliding bearing, which was the aim of the work

Bosna i Hercegovina prihvata načelno globalna opredjeljenja i proklamovane ciljeve relevantnih međunarodnih institucija (Pariški Sporazum, Evropski Zeleni Plan, i drugi) za prelaz na održivi niskougljenični razvoj baziran na kružnoj ekonomiji neuslovljenoj upotrebom prirodnih resursa, te težnju ka nultoj neto emisiji stakleničkih gasova. U energetskom sektoru to podrazumijeva povećanje energijske efikasnosti, te bezuvjetni prelaz na obnovljive izvore energije i eliminaciju fosilnih goriva. I dok je opšte opredjeljenje nesporno, način i dinamika ostvarenja pojedinih ciljeva u zacrtanom roku do 2050. godine sa najmanje negativnih ekonomskih, socijalnih, sigurnosnih i političkih posljedica predstavlja ozbiljni izazov, posebno u zemljama koje se, kao Bosna i Hercegovina, tradicionalno oslanjaju na sopstveni ugalj kao primarni energent. U cilju doprinosa iznalaženju optimalnih rješenja u energetskoj transformaciji, a u okviru Plana rada za 2019 godinu, Odbor za energiju, energetiku i okoliš (OEEO) Akademije nauka i umjetnosti Bosne i Hercegovine (ANUBiH) u saradnji i uz finansijsku podršku JP Elektroprivreda Bosne i Hercegovine d.d. Sarajevo, je organizovao regionalnno naučno-stručno savjetovanje: Budućnost postojećih i novih termoelektrana u BiH u energetskoj tranziciji, koje je održano 21. 11. 2019. godine u ANUBiH u Sarajevu. Cilj Savjetovanja je bio da nauka i struka, pod pokroviteljstvom i u okviru ANUBiH, u saradnji sa stručnjacima iz EU i Regije razmjene iskustva, stavove i planove o upotrebi uglja i biogoriva u proizvodnji električne i toplinske energije u periodu do 2050. godine. Na Savjetovanju, kojem su prisustvovali predstavnici vlasti i zvaničnih institucija iz BiH, naučni radnici, stručnjaci, menadžmenti elektroprivrednih organizacija iz oba bh. entiteta, je na bosanskom, srpskom, hrvatskom ili engleskom jeziku na prethodno odabrane teme izloženo 15 referata po pozivu. Pored stručnjaka iz BiH, referate su podnijeli i pozvani eksperti iz zemalja EU i okruženja sa elektroprivrednom strukturom i izazovima u toj oblasti sličnim kao što ih ima i BiH, a koje u proizvodnji električne energije karakteriše značajni, ili čak dominantni oslonac na fosilna goriva, naročito ugalj. U referatima su izloženi mogući modeli tranzicije i iskustva iz BiH, Srbije, Grčke, Sjeverne Makedonije, Poljske i Njemačke. Prošireni sažeci i slide prezentacije svih referata na jezicima na kojima su referati izloženi, kao i Zaključci Savjetovanja su sadržani u ovom Posebnom izdanju ANUBiH. Savjetovanje je potvrdilo da je dekarbonizacija elektroenergetskog sektora u EU i Regiji do 2050. godine opravdan, ali i veoma zahtjevan cilj. Svaka država koja se obavezala za takav cilj, mora razviti svoj model održive tranzicije, koristeći vlastito znanje, pomoć eksperata EU, te iskustva i modele drugih. U tom smislu zaključeno je da je veoma važno u što je moguće kraćem roku, u saradnji sa Energetskom zajednicom, detaljno i odgovorno koncipirati razvoj energetskog sektora u Bosni i Hercegovini u tranzicijskom periodu, dajući pritom do znanja Evropskoj uniji, ali i svima drugima, da je Bosna i Hercegovina spremna pratiti i ispoštovati generalno postavljene ciljeve u toj oblasti, uvažavajući pri tom svoju potrebu za energetskom neovisnošću. U tom cilju potrebno je definirati jasnu viziju, sa prohodnim putem do postavljenih ciljeva, uzimajući u obzir sve relevantne direktive i regulativu EU, ali i realne mogućnosti i potrebe Bosne i Hercegovine. Iskustva i poruke izložene u referatima, diskusije tokom Savjetovanja, te saznanja do kojih smo došli, a koji su sumirani u Zaključcima ovog dokumenta, čine korisnu bazu i orijentir za konkretizaciju strategije za aktuelnu tranziciju energetskog sektora BiH.

Emergence of the International Political Economy as a platform for a complex interface between economy and politics coincides with a strong momentum of the last phase of globalization. The interdependence is explained through the prism of three classical theories, liberalism-as a pro-globalist theory, mercantilism, and Marxism, both skeptical of globalization. Shrouded in numerous controversies globalization has indeed achieved limited results. Paradoxically, actors in the borderless, neoliberal world are exclusively driven by capital. Governments often allow transnational companies to dictate market developments with direct influence on employment, gross domestic product, and power distribution. The aim of this paper is to show whether the neoliberal order is on the wane, an order in which non-liberal measures such as trade protectionism and border closure are increasingly being resorted to pushing back the processes of world economy liberalization. The basic liberal, democratic pillars of equality and justice have collapsed before the interest-driven economy.

Abstract: This paper situates the 2008 Global Financial Crisis into the wider historical context to argue that the roots of the crisis can be traced back to the dominant economic ideology in the West during the 1970s. It shows that the corresponding financial policies, implemented by the powerful western economies during the four decades that preceded the crisis, created an institutional framework that fostered financial irresponsibility and made the crisis all but inevitable. The paper also explores the ideas that led to the stabilization of the global market as well as the role of China in charting the way ahead. Ultimately, the discussion highlights the inherent tendency of neoliberal economic ideology to create market instabilities whose consequences for the global economy can be devastating.

—In order to analyze the feasibility of implementing elements of new communication systems under an SDR approach, this work presents the prototyping of an OFDM communication link using the GNU Radio open source tool and low cost hardware interface with HackRF One and RTL-SDR. Preliminary results have shown promise, allowing the design and testing of digital communication systems in a practical way and taking into account the real condition of the channel and deficiencies of the front-end