Multifunctional photovoltaic instalations- Tree of Life TM

Drvo životaTM je multifunkcionalna instalacija izgledom prirodnog drveta, dimenzionirana je na način da apsorbira energiju Sunca i prikuplja zalihe vode. Kao rezultat razvijenog solarnog sustava i sustava prikupljanja kišnice proizvod daje finalne energente a to su električna struja i voda. Ova inovacija je sinergija korištenja obnovljivih izvora energija i ruralnog razvitka Republike Hrvatske. Osnivanjem poduzeća TREE OF LIFE d.o.o planira se proizvodnja proizvoda koja bi se financirala većinskim dijelom iz kreditnih sredstava. Drvo životaTM je izvorni hrvatski proizvod.Tree of LifeTM is a multifunctional installation appearance of natural wood, dimensioned in a way to absorb solar energy and collects water supplies. As a result of the developed solar systems and rainwater harvesting product gives final energy namely electricity and water. This innovation is the synergy of renewable energy and rural development in Croatian. Establishment of enterprises Tree of Life Ltd plans to manufacture products which would be financed by a majority part of the loan funds. Tree of LifeTM is original Croatian product

Impact of downtime pattern on mining machinery efficiency

In this paper, problem of mining machinery efficiency is considered through impact of different types of downtimes. New methodology is suggested based on comparison impact of mechanical and technological mining machinery time in fault (M-t, T-t) and mechanical and technological mining machinery downtime frequencies (M-f, T-f) on machine work done (W). Benchmarking analysis is conducted by pairing variables M-t-W, T-t-W, M-f-W and T-f-W, and determining relationships between observed variables. By comparing the increment of the cumulative downtime curve with the cumulative curve of the machine's operating volume, it can be assessed whether the observed downtime develops a concave or convex character of the operating volume cumulative curve, in respect to significant losses. Results indicate that the relationship between cumulative downtime curve and cumulative work done curve can successfully serve as a parameter for evaluating the impact of specific downtime on the efficiency of the machine. A multi-criteria analysis, namely, an analysis of the criteria - frequency and time spent in downtime for each of the observed causes of downtime, clearly determines the critical pattern of downtime on the efficiency of the observed machine

Deset godina praćenja kvalitete u regionalnoj opstetričkoj anesteziji

Introduction: Quality assessment of provided healthcare is becoming a standard in numerous health institutions worldwide, which is beneficial for both the patient and the institution. In order to achieve this standard, it is necessary to develop quality indicators in all segments of healthcare. Postdural puncture headache is a common complication following neuraxial blocks, especially in obstetric anesthesia. If severe, it is a cause of emotional and psychological distress and must be treated by a blood patch. Aim: The aim of this study was to determine whether the number of these complications is reduced when blood patch frequency is monitored and analyzed and to assess the effect of countermeasures in order to improve the quality and safety of regional anesthesia in obstetrics. Methods: Before 2009 and during that year at the University Hospital Sveti Duh, there had been a large number of severe postdural puncture headaches after spinal anesthesia and epidural analgesia treated by a blood patch in 6.12% of cases. After noticing the rising number of blood patches, we decided to analyses data every year. We recorded all blood patches injected to obstetric patients within the period of nine year, from 2009 to 2018 and concurrently we introduced a set of measures to improve the quality of neuraxial blocks, such as the use of atraumatic 26 or 27-gauge pencil-point spinal needles and modern neuraxial blockade protocols. Data were collected from anesthesiology and gynecology protocols and analyzed with MedCalc software, version 18.1.2. Results: The frequency of blood patch applications has been reduced from 6.12% to 0.30%, which is statistically significant. The percentage of placed epidural catheters for vaginal birth increased from 21% in 2009 to 38% in 2018. Although not statistically significant, the number of pregnant women undergoing a caesarean section is also growing, while the total number of births is falling. The proportion of cesarean sections in spinal anesthesia varies from year to year. Discussion: A statistically significant decrease in the number of installed blood patches clearly indicates the positive effect of measures taken to improve quality, which could contribute to the growing interest of pregnant women in childbirth in epidural analgesia. The number of placed epidural catheters is increasing despite the decline in the total number of deliveries and the increase in the number of deliveries completed by cesarean section. Conclusion: Monitoring the incidence of severe post-puncture headaches treated with blood patches has shown great progress in improving the quality and safety of regional anesthesia and analgesia in our institution, so we believe that monitoring the number of blood patches could serve as an indicator of regional anesthesia and analgesia in obstetrics. Monitoring the number of blood patches shows that the frequency of post-puncture headaches does not correlate only with the type of needle or epidural catheter used for neuroaxial blocks, but is also a sensitive indicator of any deviations from the achieved standards. Furthermore, it indicates the need for careful analysis of causes in order to adopt and implement appropriate countermeasures.Uvod: Procjena kvalitete pružene zdravstvene usluge postaje standard u zemljama diljem svijeta što doprinosi dobrobiti pacijenata i većoj konkurentnosti i ugledu institucija u kojima se pruža zdravstvena skrb. Kako bi se razvio visok standard pružanja zdravstvene usluge, potrebno je razvijati indikatore kvalitete u svim segmentima zdravstvene skrbi. Postpunkijska glavobolja česta je komplikacija neuroaksijalnih blokova, osobito u opstetričkoj anesteziji. Ukoliko je jakog intenziteta, može dovesti do emocionalnih i psiholoških poteškoća mladih majki i mora se liječiti krvnom zakrpom. Cilj: Cilj ovog istraživanja bio je utvrditi može li se praćenjem broja postavljenih krvnih zakrpa smanjiti učestalost komplikacija i procjenjivati učinak uvedenih protumjera, odnosno poboljšanje kvalitete i sigurnosti regionalne anestezije u opstetriciji. Metode: Prije 2009. i tijekom te godine u Kliničkoj bolnici “Sveti Duh” primijećen je velik broj pospunkcijskih glavobolja nakon spinalne i epiduralne anestezije koje su zahtijevale primjenu krvne zakrpe u čak 6,12% slučajeva. Nakon što smo primijetili sve veći broj krvnih zakrpa, odlučili smo analizirati ove podatke svake godine. U razdoblju od 2009. do 2018., bilježili smo sve krvne zakrpe ubrizgane pacijenticama i istodobno smo uveli niz mjera za poboljšanje kvalitete neuroaksijalnih blokova, kao što je korištenje atraumatskih i gala promjera 26 ili 27G „pencil point“ vrha i suvremene protokole neuraksijalne blokade. Podatci su prikupljeni iz anestezioloških i ginekoloških protokola i analizirani programom MedCalc software, version 18.1.2. Rezultati: Učestalost postavljanja krvne zakrpe smanjila se sa 6,12% na 0,30% što je statistički značajno. Postotak postavljenih epiduralnih katetera za vaginalni porođaj narastao je s 21% u 2009. i na 38% u 2018. godini. Iako nije statistički značajno, raste i broj trudnica podvrgnutih carskom rezu dok istovremeno pada ukupni broj porođaja. Udio carskih rezova u spinalnoj anesteziji varira iz godine u godinu. Rasprava: Statistički značajan pad u broju postavljenih krvnih zakrpa jasno ukazuje na pozitivan učinak poduzetih mjera u svrhu poboljšanja kvalitete što bi moglo doprinijeti i sve većoj zainteresiranosti trudnica za porođaj u epiduralnoj analgeziji. Broj postavljenih epiduralnih katetera raste unatoč padu ukupnog broja porođaja i rastu broja porođaja dovršenih carskim rezom. Zaključak: Praćenjem pojavnosti težih oblika postpunkcijskih glavobolja liječenih krvnom zakrpom vidljiv je veliki napredak u poboljšanju kvalitete i sigurnosti regionalne anestezije i analgezije u našoj ustanovi, stoga smatramo da bi praćenje broja krvnih zakrpa moglo poslužiti kao indikator kvalitete regionalne anestezije i analgezije u opstetriciji. Praćenjem broja krvnih zakrpa uočava se da učestalost postpunkcijskih glavobolja ne korelira samo sa vrstom igle ili epiduralnog katetera koji se koriste za neuroaksijalne blokove već je osjetljiv pokazatalj bilo kojih odstupanja od dosegnutih standarda te ukazuje na potrebu pomne analize uzroka kako bi se usvojilo i provelo odgovarajuće protumjere

Impact of downtime pattern on mining machinery efficiency

In this paper, problem of mining machinery efficiency is considered through impact of different types of downtimes. New methodology is suggested based on comparison impact of mechanical and technological mining machinery time in fault (M-t, T-t) and mechanical and technological mining machinery downtime frequencies (M-f, T-f) on machine work done (W). Benchmarking analysis is conducted by pairing variables M-t-W, T-t-W, M-f-W and T-f-W, and determining relationships between observed variables. By comparing the increment of the cumulative downtime curve with the cumulative curve of the machine's operating volume, it can be assessed whether the observed downtime develops a concave or convex character of the operating volume cumulative curve, in respect to significant losses. Results indicate that the relationship between cumulative downtime curve and cumulative work done curve can successfully serve as a parameter for evaluating the impact of specific downtime on the efficiency of the machine. A multi-criteria analysis, namely, an analysis of the criteria - frequency and time spent in downtime for each of the observed causes of downtime, clearly determines the critical pattern of downtime on the efficiency of the observed machine

Analiza predkomisijskih pokusa kukuruza i germplazme razvijene u oplemenjivačkoj stanici u Altınovi od 2015. do 2018. godine

Main goal of the most breeding programs is to develop highly adaptive hybrids in various environments, and the most important limitation are complex interactions between genotype, environment and management. Every hybrid breeding program follows certain strategy for new hybrid development. One possible strategy is to develop hybrids with lower adaptability, achieving best performance in “high input” environments (breeding for “race-horses”). However, another approach is to breed for hybrids with higher adaptability and stable performance across a wide range of environments (breeding for “work-horses”). High stability needs to be accompanied by high yield performance to insure profits, so stability should be monitored along with performance in breeding trials. Aim of this research was to analyze the new germplasm developments and their performances in the pre-registration trials in Turkey by the means of BLUP and GGE models. Heritability estimates for grain yield ranged from 0.58 to 0.85, and relative stability of all hybrids and checks is detected across all years. Cause of the high estimates of G×L interaction were crossovers of genotype performances across locations. The location Altinova was the least stable location across years. One hybrid was selected as a future check based on stability parameters across environments. As G×E interaction remains the greatest challenge in modern maize breeding, more research is needed in this field. Therefore mixed-model based approach is a valuable tool for analysis of genotype performances in maize breeding trials.Glavni cilj komercijalnih oplemenjivačkih programa na kukuruzu je razviti hibride visoke prilagodljivosti u raznim okolinama, pri čemu glavno ograničenje predstavljaju kompleksne interakcije između genotipa, okoline i upravljanja. Svaki oplemenjivački program slijedi određenu strategiju za stvaranje hibrida. Jedna od strategija je stvaranje hibrida koji nemaju vrhunsku adaptabilnost, ali mogu postići najviše prinose u visokoprinosnim okolinama („trkaći konji“), dok je druga strategija stvaranje hibrida visoke adaptabilnosti u raznim okolinama („radni konji“). Visoka stabilnost mora biti popraćena visokim prinosima kako bi se osugurao profit, stoga bi se u oplemenjivačkim pokusima stabilnost trebala pratiti zajedno s prinosom. Cilj ovoga istraživanja je analiza nove germplazme (inbred linija i hibrida) kroz predkomisijske pokuse na raznim lokacijama u Turskoj, korištenjem BLUP i GGE metoda za predviđanje, odnosno stabilnost prinosa. Heritabilnost za prinos zrna iznosila je od 0.58 do 0.85, a relativna stabilnost svih hibrida i standarda je zabilježena u svim godinama. Uzrok visokih vrijednosti G×L interakcije su različite vrijednosti genotipova kroz lokacije. Lokacija Altınova bila je najmanje stabilna kroz sve četiri godine. Jedan hybrid je izabran kao budući standard na osnovu stabilnosti u svim okolinama. Kako G×E interakcija i dalje predstavlja najveći izazov u modernom oplemenjivanju kukuruza, potrebno je još istraživanja u tome području, a korištenje mješovitih modela predstavlja vrijedan alat za analizu genotipova u oplemenjivačkim pokusima

Chlorophyll fluorescence analysis of photosynthetic performance in seven maize inbred lines under water-limited conditions

Background and Purpose: Photosynthetic efficiency in crops can be associated with stress resistance and yield increase. In maize, photosynthetic efficiency is important in inbred lines during breeding process and in seed production, as well as in hybrids. Objective of this study is to determine differences in photosynthetic efficiency under the water-limited conditions between seven flint and dent maize inbred lines belonging to various heterotic groups. Moreover, this investigation will serve as a preliminary study for the QTL analysis of chlorophyll fluorescence parameters in order to understand the genetic and physiological background to drought stress tolerance in maize. Materials and Method: Photosynthetic efficiency was measured in maize field nursery in Osijek during silking by Hansatech Handy-PEA analyzer in the elite inbreds Os1767/99, Os1252/99, Os163_9, B73, Mo17, Os6_2 i B84. The data obtained were used to calculate two biophysical parameters that describe the photochemistry of PSII: maximum quantum yield of photosystem II (Fv/Fm) and performance index on absorption basis (PIABS). Obtained data were subjected to statistical analysis applying least significant difference (LSD) and cluster analysis. Results and Conclusions: Differences in photosynthetic efficiency appeared to be higher within dent inbred lines than between dents and flints. Although investigated parameters of chlorophyll fluorescence (Fv/Fm and PIABS) revealed similar clustering of inbred lines, there was slight difference concerning the grouping of the line Os6_2. Therefore we recommend the combined use of these two main parameters of chlorophyll fluorescence when the investigation includes photosynthetic performance in stress challenged plants, such as water-limited conditions

ODNOSI IZMEĐU SVOJSTAVA OTPORNOSTI NA KUKURUZNU ZLATICU I KONCENTRACIJE ELEMENATA U KORIJENU U GERMPLAZMI KUKURUZA

Western corn rootworm – WCR (Diabrotica virgifera virgifera LeConte) is an important maize pest in Croatia. Using native resistance of maize germplasm could reduce chemical treatments and other costs in maize production. Objectives of this study were: i) to assess variability of WCR resistance traits (root injury, regrowth and size) and concentrations of nine elements in roots of 128 maize genotypes, and ii) to determine correlations among the traits and ion concentrations. Results revealed high variability of maize genotypes for both WCR resistance traits and ion concentrations. Significant moderate negative correlations (>-0.4) were detected between root injury and boron as well as between root regrowth and iron, manganese and zinc concentrations in root. Consequently, ion concentration in maize roots might have an impact on WCR resistance research.Kukuruzna zlatica (Diabrotica virgifera virgifera LeConte) važan je štetnik kukuruza u Hrvatskoj. Korištenje prirodne otpornosti u germplazmi kukuruza moglo bi smanjiti troškove kemijskoga tretiranja, kao i ostale troškove pri proizvodnji kukuruza. Glavni ciljevi ovoga rada bili su: i) procijeniti varijabilnost svojstava otpornosti na kukuruznu zlaticu (oštećenje, sekundarni porast i veličina korijena) i koncentracije devet elemenata u korijenu 128 genotipova kukuruza te ii) utvrditi korelacije između svojstava otpornosti i koncentracije iona. Rezultati su pokazali veliku varijabilnost ispitivanih genotipova i za svojstva otpornosti na kukuruznu zlaticu i za koncentracije iona u korijenu. Značajne negativne korelacije (>-0.4) utvrđene su između oštećenja korijena i bora, kao i između sekundarnoga porasta i željeza, mangana i cinka. Koncentracija iona u korijenu kukuruza mogla bi imati veći utjecaj u istraživanju otpornosti kukuruza na kukuruznu zlaticu

SMART, ERGONOMIC AND SUSTAINABLE MINING MACHINERY WORKPLACES: AN OVERVIEW OF THE SMARTMINER PROJECT

Despite being the oldest, the mining industry continues to be a major source of pollution, with more people killed or injured than in all other industries. Additionally, social tension related to this sector is widespread around the world, since mining businesses continue to have a significant negative influence on land, water, air, biota, and people through direct and indirect mechanisms. The mining machinery workplaces, which are in the focus of this study have the largest environmental footprint. The dominance of technology-centered design in present research streams is most likely the explanation for the lack of advancement in the mining industry. The SmartMiner project creates shift from technology-centered design and its concept creates solutions for improving the standard of environmental quality in complex systems and suggests a paradigm change to a Human and Data-Centric Engineering. By aligning advanced operator I4.0&5.0 and society S5.0 standards, the SmartMiner project develops solutions for raising the level of environmental quality in complex interactions between physical, behavioural, and organizational processes field. Proposed paradigm can be easily transferred to other industries. The safety of mining machinery operators in their immediate surroundings and their regular alignment with value chain stakeholders are the first steps in our original idea approval process. Research moves to the operator macro-environment, which is determined by organizational contextual factors, and is encompassed by the development of intelligent, ergonomic, non-invasive, and dependable operator aid systems for regulating physical environment job stressors - noise, human vibration, lighting, temperature, air quality, workplace layout issues, etc., with high potential to solve environmental and human health issues and to influence overall performance

RAZVOJ HOMOZIGOTNIH LINIJA KUKURUZA POMOĆU INDUKCIJE HAPLOIDA IN VIVO U HRVATSKOJ GERMPLAZMI

The in vivo haploid induction has been widely applied to the maize breeding in recent decades, but it has not been used in the breeding programs in the Republic of Croatia by now. This study\u27s objectives were to examine the haploid induction rates in the Croatian germplasm and to evaluate the properties of the D0 haploids, which are essential for a successful implementation of this method in breeding. The in vivo haploid induction was performed on 11 single-cross hybrids using the Zarodyshevy Marker Krasnodarsky (ZMK) inducer, and colchicine was used as a chromosome doubling agent. Emergence, misclassification rate, colchicine treatment survival, chromosome doubling rate and self-pollination success were examined in the D0 generation. The haploid induction rates ranged from 6.9 to 15.8%, which is consistent with the average induction rates characteristic of the ZMK inducer and the other modern ones. Significant differences were found among the populations of D0 haploids for all tested properties, except for self-pollination success. On average, the misclassification rates were lower, and the seedling survival rates were higher than those reported in other studies, indicating a possibility of a successful application of the doubled haploid method in maize breeding.Indukcija haploida in vivo posljednjih se desetljeća sve više primjenjuje u oplemenjivanju kukuruza, ali se dosad nije koristila u oplemenjivačkim programima u Republici Hrvatskoj. Ciljevi ovoga istraživanja bili su utvrditi relativne frekvencije induciranih haploida kod germplazme koja se upotrebljava u domaćim oplemenjivačkim programima i ispitati svojstva haploida generacije D0 koja su važna za uspješnu primjenu ove metode u oplemenjivanju. Indukcija haploida in vivo obavljena je na 11 jednostrukih hibrida pomoću induktora ZMK, a za udvostručenje kromosoma korišten je kolhicin. U generaciji D0 ispitana su svojstva nicanja, pogrešne klasifikacije, preživljavanja tretmana kolhicinom, udvostručenja kromosoma i uspješnosti izvođenja samooplodnje. Relativna frekvencija haploida kretala se od 6,9 do 15,8%, što je usporedivo s prosječnim stopama indukcije specifičnim za induktor ZMK i druge moderne induktore. Statistički značajne razlike pronađene su između populacija haploida D0 za sva ispitana svojstva, osim za uspješnost izvođenja samooplodnje. U prosjeku, stope pogrešne klasifikacije bile su niže, a stope preživljavanja tretmana kolhicinom više u odnosu na one zabilježene u drugim istraživanjima, što ukazuje na mogućnost uspješne primjene metode udvostručenih haploida u oplemenjivanju