On the occasion of the 11th Days of Academy of Medical Sciences of Bosnia and Herzegovina and 3rd Seminar about Writing, Editing and Publishing (SWEP) at Holiday hotel in Sarajevo was organized webinar about COVID-19 Pandemic experiences in Bosnia and Herzegovina. During the webinar members of the Academy from Bosnia and Herzegovina, Croatia, Serbia, North Macedonia, Poland, and USA participated with very interesting presentations (1-5). We also presented lecture about our institution and our professional experiences during pandemic time. Some of important facts which we presented are mentioned in this letter to editor. Medical Institute Bayer (MIB) is a continuation of the BH Heart Center Tuzla, which was founded in 2008. The goal of establishing the Center was to build a modern, functional hospital that will meet all prescribed norms and standards, and eliminate all limiting factors in the development of cardiac surgery, interventional cardiology and vascular surgery (Figure 1).

Objective. The aim of this study was to examine the effect of expanded hemodialysis on the degree of b2-microglobulin removal. Methods. Sixteen patients treated with extended MCO hemodialysis were examined. The main parameter for assessing the efficiency of removal of uremic toxins of middle molecular weight is the concentration of b2-microglobulin in the serum before and after a single session of extended MCO hemodialysis. The following were used for statistical analysis: Kolmogorov-Smirnov test, Student's T test for bound samples and Wilcoxon test. Results. Extended MCO hemodialysis effectively removes uremic toxins of middle molecular weight. The reduction index of b2-microglobulin during a single session of extended MCO hemodialysis is 70.60 ± 5.88%. The average loss of albumin during a single session of extended MCO hemodialysis is 1.88 ± 1.02 g/4h, and the index of albumin reduction is 4.94 ± 2.49%. Conclusion. Extended MCO hemodialysis effectively removes b2-microglobulin. The b2-microglobulin reduction index is ~ 71% and the albumin loss is less than 4.0 g/4h. This dialysis modality prevents the development of amyloidosis, atherosclerosis and atherosclerotic cardiovascular diseases in the population of patients treated with regular hemodialysis.

The environmental benefits of green roofs have been widely recognized. In recent years, increasing attention has been paid to moisture management in the green roof systems. The moisture in the green roof has an influence on its thermal and hydrological performances. An accurate measurement of water content in green roof substrate is important for irrigation monitoring, optimal irrigation management, and plant growth. Knowing the performance and characteristics of the sensor for the chosen substrate layer in a green roof system is essential. This paper presents laboratory calibration of the capacitive moisture sensor in two types of the green roof substrate layer. The volumetric water content of several mineral wool and soil samples, with the water content from low until saturated, were measured using the gravimetric method and related to frequency obtained by the sensor. The results have shown that the capacitive moisture sensor has a good response to water content variation.

Poremećaji hoda i poremećaji ravnoteže uobičajeni su klinički problemi za starije osobe. Uzroci poremećaja hoda su individualni, često zbog fiziološkog procesa starenja i somatskih bolesti. Poremećaji hoda dovode do gubitka lične slobode, pada i povreda i rezultiraju značajnim smanjenjem kvaliteta života. Kod starijih osoba, kontrola statičke i dinamičke kontrole položaja i ritma je poremećena, što dovodi do izmijenjenog hoda, smanjuje se korak, povećava se širina hoda kako bi se održala ravnoteža, gornji dio tijela se savija prema naprijed da bi se održala ravnoteža, ruke se ne pomiču dok hodaju, hod je nepravilan, teže je započeti prve korake nakon sjedenja ili stajanja, kao i okretanja. Ako je moguće, najbolje je tretirati etiološki faktor, tj. osnovne bolesti, kao što su parkinsonizam, neki metabolički poremećaji itd. Treba voditi računa o nusefektima nekih lijekova, naročito antiparkinsonika, sedativa, hipnotika i antidepresiva. Također je potrebno uključiti i druge specijaliste, kao što su reumatolozi, fizijatri i fizioterapeuti, kao i internisti, kardiolozi i dijabetolozi. Kognitivne strategije također mogu biti korisne, na primjer usmjeravanje pažnje na svaki pojedinačni korak, a ne čin hodanja kao takav, svjesno pokušavajući napraviti pojedinačne velike korake, ili mentalno brojanje, kao i upotreba pomagala za hodanje.

SAŽETAK: Uvod: Alergija na hranu je u zadnjih 20 godina postala značajan zdravstveni problem. Prevalencija se kreće od 3-38% samoprijavljenih slučajeva, odnosno od 1-7% dijagnosticiranih slučajeva alergije. Zadnjih godina su poduzeti brojni projekti kako bi se odredila prevalencija, vrsta alergena, uzroci alergija, veza sa ostalim zdravstvenim problemima, načini dijagnosticiranja, provođenje kontrole rizika u prehrambenoj industriji, prilagođavanje zakonske regulative potrebama alergičnih osoba itd. Dok su neke države uradile mnogo po ovom pitanju, još uvijek je veliki broj onih koji nemaju podataka o alergijama na hranu na svom području, a takva je situacija i u BiH. Cilj rada: Utvrditi prevalenciju alergija na hranu iz anketnog ispitivanja u Kantonu Sarajevo. Utvrditi kakva je učestalost nekih drugih alergija kod ispitanika. Materijal i metod rada: Ovo presječno istraživanje o alergiji na hranu provedeno je tokom marta i aprila 2017. među stanovnicima Kantona Sarajevo oba spola i svih dobnih skupina metodom slučajnog uzorka. Posebno dizajniran anketni upitnik od 16 pitanja popunilo je 480 ispitanika. Istraživanje je provedeno retrospektivno. Rezultati: Rezultati ankete provedene na području Kantona Sarajevo pokazuju procenat od 51% osoba koje prijavljuju da imaju neku vrstu alergije, među njima je 20% prijavljenih alergija na hranu, odnosno 11,7 % slučajeva dijagnosticiranih alergija na hranu, a u odnosu na ukupan broj od 480 (100%) ispitanika koji su učestvovali u anketi. Najčešće prijavljeni alergeni su: mlijeko i mliječni proizvodi, žitarice, jaja, kikiriki, orašasti plodovi, riba (sa školjkama i rakovima) i jaja. Zaključak: Dobiveni rezultat prevalencije alergije na hranu u našem istraživanju u ukupnom ispitanom uzorku od 480 anketiranih, njih je 96 (20%) ispitanika što ukazuje da je problem alergija na području Kantona Sarajevo značajan, i da se učestalost kreće u vrijednostima koje su karakteristične i za druge regije Evrope i svijeta. Zakonska regulativa se redovno usklađuje sa pravnom tekovinom Evropske unije, ali postoji nedostatak lako dostupnih informacija, koje bi alergičnim osobama olakšale proces dijagnosticiranja, preveniranja kontakta sa alergenima i snalaženje u svakodnevnom životu. Ključne riječi: alergija na hranuprevalencija; alergeni u hrani; Kanton Sarajevo

In general, the mixing the reactants is very important to the process and the rate of combustion of each fuel, especially low-ranked coals with low reactivity. The appropriate excess air coefficient for combustion and the position and mode of supply of individual portions (air sta- ging) of the total air in the furnace are one of the key influ- encing factors for the mixing, respectively the efficiency of the combustion process, and the level of emissions. Today, the air staging (primary, secondary, tertiary and over fire air-OFA) is an indispensable process in the design of new industrial and energy boilers. Also, this measures are used for the reconstru- ction of existing furnace of large boilers. The implementation of this primary measure in the furnace does not require signi- ficant financial resources - the costs of investing in the intro- duction of air staging supply for combustion in the furnace are very low in relation to the multiple positive effects and bene- fits of such a system, especially a lower NOx emissions. However, the first condition for the correct and reliable design of the air staging system in the furnace is the choice of the optimal position for the supply OFA air. Determination of this position on the furnace depends on several factors, primarily the type and characteristics of the fuel, grinding quality, co- mbustion technology, furnace structure, type, number and arra- ngement of burners. On this topic, the Faculty of Mechanical Engineering of the University of Sarajevo, in the Laboratory for Coal and Biomass Combustion, conducted extensive rese- arch on the pulverized combustion of coal blends of the Ce- ntral Bosnia Mining Basin, including co-firing of these coals with waste wood biomass (beech and spruce sawdust). Here is presented some of the results of those NOx emission studies for different fuels and combustion temperatures, depending on the mode of supply and the positions of the combustion air supply in the boiler furnace.

The aim of this paper is to highlight the role and level of vitamin D in chronic diseases at the primary level