U posljednje dvije godine SO HPD „Željezničar“ aktivno nastavlja istraživanje masiva Crnopac. Istraživanje se sastojalo od rekognosciranja terena i istraživanja postojećih i novopronađenih ...speleoloških objekata. Fokus ovog rada je na novim objektima i drugim objektima koje (još uvijek) nisu dio velikog jamskog sustava i koje su relativno jednostavne u pogledu logistike i njihovog istraživanja u usporedbi sa sustavima poput Jamskog sustava Crnopac. Statističkom analizom provedenog istraživanja može se pronaći značajna veza između aktivnosti i događaja koji su se dogodili u tom vremenskom razdoblju unutar odsjeka (speleološko školovanje, stanje duha), u Zagrebu (potres krajem ožujka 2020.) i općenito u cijeloj Hrvatskoj (mjere u vezi s virusom SARS-Cov-2), kao i vremenske prilike. Zbog snježnih uvjeta istraživanja u 2019. godini započela su u travnju, a do kolovoza su ga uglavnom karakterizirala istraživanja Jamskog sustava Crnopac, dok se u preostalim mjesecima pozornost usmjerila na druge objekte masiva Crnopac. Godine 2020. situacija je obrnuta. Kad izuzmemo istraživanja provedena u Jamskom sustavu Crnopac, u ove posljednje dvije godine u istraživačkim aktivnostima sudjelovalo je 24 speleologa, gdje je istraženo 16 špilja (od kojih neke još uvijek nisu u potpunosti), a 20 novopronađenih objekata još uvijek čeka na prvi ulaz .
U zadnjem desetljeću nekoliki novih i zanimljivih vrsta dvojenoga je opisano iz špilja i jama Hrvatske. U ovom kratkom članku predstavili smo deset novih vrsta iz tri različita reda: Balkanodesmus ...biokovensis Antić & Reip, 2014, Solentanodesmus insularis Antić & Reip, 2014, Velebitodesmus cavernicolus Antić & Reip, 2014 (svi red Polydesmida), Egonpretneria vudutschajldi Antić & Dražina, 2015, Biokoviella mosorensis Antić & Dražina, 2016, Dalmatosoma agaricum Antić & Makarov, 2018 (svi red Chordeumatida), Typhloiulus clavatus Antić, 2018, T. gracilis Antić, 2018, T. opisthonodus Antić, 2018, & T. parvulus Antić & Dražina, 2018 (svi red Julida). Gotovo sve vrste (osim T. parvulus) su endemične za Hrvatsku i predstavljaju posebne filetičke linije vezane za Dinaridsko područje. Endemizam nije prisutan samo na razini vrste – Balkanodesmus, Solentanodesmus, Velebitodesmus, Egonpretneria, Biokoviella i Dalmatosoma su endemični rodovi za Hrvatsku. Nadalje, zbog jedinstvenih anatomskih detalja kod vrste D. agaricum uspostavljena je nova monotipska porodica – Dalmatosomatidae. Navedeni rezultati potvrđuju Dinaridski krš kao izrazito važno područje za biološku raznolikost podzemne faune.
Since 1994, karstologists have participated uninterruptedly in the planning and construction of expressways on Slovenia’s karst. The choice of expressway and railway routes must above all respect the ...integrity of the karst landscape and follow recommendations on avoiding major karst surface features and already known caves. Special attention is devoted to the impact of the construction and use of expressways on karst waters. The results of constant research of karst features discovered in the course of the construction of expressways have enriched our knowledge of the natural and cultural heritage and deepened our karstological knowledge. They also represent starting points for planning life on karst surfaces and the protection of karst. The book is intended for karstologists, experts from the field of earth sciences, engineering geologists, planners of traffic routes, students, nature protectionists, planners in administrative units, managers of karst water resources, waterworks, tourist caves, etc.
The Niger Delta Power Holding Company Limited s MD/CEO - Mr. Jame Olotu has revealed this during the launch of the Ayobo transmission site on Friday in Lagos, which is likely to put capacity of 150 ...MVA to Lagos and portion of Ogun State, up to Abeokuta. The completed NIPPs include Ondo State-based 451MW Omotosho; 750MW in Olorunsogo, Ogun State; Sapele, Delta State s 451MW; plus Alaoji, Abia State, 1,074MW. The nearly completed are the 451MW Ihovbor project in Edo State; Geregu, Kogi State, 434MW; 338MW in Egbema, Imo State; 225MW in Gbarain, Bayelsa State; 225MW in Omoku, Rivers State; as well as 561MW in Calabar, Cross River State.
Na svim studijima koje izvodi Graditeljski odjel Tehničkog veleučilišta u Zagrebu uvijek nastojimo povezati gradivo različitih kolegija kako bismo studentima pomogli usvojiti sva potrebna znanja i ...vještine, koje će kasnije znati na pravi način primijeniti u praksi. O tome smo već pisali u 2, 5, 6. Ovim radom pokušat ćemo pokazati primjenu osnovnih geometrijskih pravila za rješavanje jednog čestog praktičnog problema u gradevinarstvu - izračuna volumena iskopa gradevinske jame. Takvi proračuni se rade u različitim praktičnim situacijama poput odredivanja potrebnih količina gradevinskih radova, potom za odredivanje potrebnih učinaka gradevinskih strojeva za iskop i transport materijala iz iskopa, te naposljetku za izračun i naplatu izvedenih gradevinskih radova. Znanja i vještine iz geometrije studenti usvajaju na kolegijima Nacrtna geometrija u graditeljstvu I i II (kolegiji prvog i drugog semestra Preddiplomskog stručnog studija graditeljstva), dok znanja i vještine potrebne za izradu navedenih proračuna studenti usvajaju na kolegijima Gradevinski strojevi, Organizacija gradenja I i II, Tehnologija gradenja i Organizacija gradilišta (kolegiji četvrtog, petog i šestog semestra Preddiplomskog stručnog studija graditeljstva). Navedenu povezanost znanja i vještina pokazat ćemo na jednom jednostavnom primjeru izračuna volumena iskopa građevinske jame.
The book represents a detailed study of the fauna of drips and drip pools in six caves in Slovenia. Drips and drip pools are important because they are just about the only way of assessing the ...epikarst community. Using a special sampling device, it was possible to sample individual drips for extended periods of time. A total of 37 species of copepods were found in drips and drip pools. Significant differences in the fauna between drips and pools, presumably because of differential survival and reproduction in pools were found. Somewhat surprisingly it was found that the kind of pool, e.g., mud-bottomed compared to calcite bottomed, made little difference.
This book draws together the major recent advances in the modeling of karst systems. Based on the dissolution kinetics of limestone, and flow and transport processes in its fractures, it presents a ...hierarchy of cave genetic situations that range from the enlargement of a single fracture to the evolution of cavernous drainage patterns in confined and unconfined karst aquifers. These results are also applied to the evolution of leakage below dam sites in karst. The book offers a wealth of informations that help to understand the development of cave systems. It addresses geologists, hydrologists, geomorphologists, and geographers. It is also of interest to all scientists and engineers who have responsibilities for groundwater exploration and management in karst terrains. A CD including all figures figures from the nook and numerous animations presenting the results is enclosed.
The monograph, the first regarding the Mesolithic in Slovenia, presents a discussion of two exceptionally rich sites in the Karst in western Slovenia: Viktorjev spodmol and Mala Triglavca. Viktorjev ...spodmol is a newly discovered site, where test excavation have only been done, while research is underway at Mala Triglavca already a while.The compilation primarily presents a detailed review of Viktorjev spodmol. Individual chapters address the topic of microlithic tools attributed to the Sauveterrien-Castelovien complex, their typology and relations with other sites from this complex, and with a special emphasis on the chronology and chronological correlations between Mesolithic sites in northern Italy, including the Trieste karst, and western Slovenia. The remaining chapters systematically present rare vegetal remains, the exceptionally rich collections of mollusc's fauna, ectothermic vertebrates and small mammals as well as the remains of large mammals.Mala Triglavca is equally profuse, although it is discussed only summarily in this monograph, and with an emphasis on Mesolithic artefacts. From among these finds, the numerous trapezes are particularly noteworthy, and from among the more rare finds at least the bone whistle and flute. Also noteworthy are the rare human remains discovered at both sites.
Author describes the evolution of the caves and karst surface of the Divaški kras, an area above caves Škocjanske jame and Kačna jama. This karst is with 18 km of known cave passages, accessible to ...the depth of 280 m, one of the most interesting karst areas in Slovenia. There are descriptions of the oldest caves that are because of the denudation of the surface in shallow depth or surface already cuts trough them. These unroofed caves, which can be found there, enable the reconstruction of the oldest phases of the karst formation. In following chapter cave system of Škocjanske jame – Kačna jama is presented. In these two caves was with the analysis of the geological structure and comparison of the for these two caves geological structures, passage morphology, and recent sediments were sediments analysed in order to get evolution of the caves. Special attention was paid to the large chambers, canyons and collapse dolines. The hydrology of the underground river Reka is described, especially the bifurcations to several separated streams. In special chapter there are results of the datations of the stalagmites and other flowstone which dates some phases in cave evolution and well reflects the past climatic changes. In well designed book with rich photographic material an extensive bibliography is added and summary in Slovene and English language.
The Postojnska jama cave system represents a union of old, now dry, horizontal cave passages, the Pivka river active passage, and shafts or collapse dolines, which enable surface connection with some ...cave passages. The present entrance to the cave is formed at the contact between the Postojna basin impermeable Eocene flysch and the Upper Cretaceous limestone. The Pivka river sink entrance is formed along interbedded movements in the horizontal direction, and in the vertical direction it lies in a strong tectonic fault zone of NE-SW direction. The cave passages are formed in tectonic deformations which developed by the formation of the Postojna anticline, as there are interbedded movements, and in later fault deformations, where the main tectonic fault zones directions are the Dinaric NW-SE and cross-Dinaric NE-SW. Besides two main fault directions, the accompanying broken and fissured zones which are the result of the fault Dinaric tectonics are also favourable to cave formation.
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