Претрага
695 items
-
Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine
... obtained: dv dR n v R namely: log log lognv R K (4) where is K constant of integration. The equation (4) can be written in the form: log log nv k R from where it is obtained: nv K R (5) being the equation of rock mass oscillation ...
... equation of M.A. Sadovski, where the oscillation velocity v is given in the form of the function, is most frequently used: nv K R where R is a reduced distance, and K and n parameters conditioned by soil characteristics and blasting conditions, thereby v is the decreasing convex function of ...
... affect facilities, is used. The equation of M.A. Sadovski is given in the form: 3 n r v K Q (1) where there are: v - velocity of soil oscillation [cm/s], K - a coefficient conditioned by soil characteristics and blasting conditions determined by terrain ...Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina. "Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine" in Underground Mining Engineering, Belgrade : University of Belgrade, Faculty of Mining and Geology (2015). https://doi.org/10.5937/podrad1526009L
-
Хазард од клизишта у Србији у 21. веку
Biljana Abolmasov (2019)... Van Den Eechaut M., Mavrouli O., Agliardi F., Pitikalis K., Winter Ferlisi S., Tofani V., Hervas J., Smith JT. (2014). Recommendations f analysis of landslide risk. Bulleting of Engineering Geology an 73:209�263. [17] Lee E. M., Jones D. K. C. (2004). Landslide Risk Assessment. Toma UK. 454 pp ...
... Foto Van Den Eechaut M., Mavrouli O., Agliardi F., Pitikalis K., Winte Ferlisi S., Tofani V., Hervas J., Smith JT. (2014). Recommendations analysis of landslide risk. Bulleting of Engineering Geology ar 73:209 263. Lee E. M., Jones D. K. C. (2004). Landslide Risk Assessment. Tome UK. 454 pp. “7 “7 ...
... characterization of slope movements. Special lecture. In: Senneset K. (E of the VII International Symposium on Landslides, Trondheim, 17�21. J Norway. A. A. Balkema, Rotterdam, Netherlands. Vol. I. 53�74. [31] Kru�i� J., Andrejev K., Abolmasov B., Marjanovi� M. (2017). Prelimin of the Selanac debris ...Biljana Abolmasov. "Хазард од клизишта у Србији у 21. веку" in Геохазард у Србији у 21. веку – знање је најбољи бедем против стихије, Српска академија наука и уметности (2019)
-
Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... ro from the equa- tion (3), in the equation, the following is obtained (2): n nn v nn v n v RK Q r K Q r KK r Q K r Q Kv 331 3 3 3 4 34 3 Whereas: 1 3 4 3 K n ; KKKv 1 ; R Q r 3 whereby: R - reduced distance is the distance from blasting point to observation ...
... (3) Zamenom vrednosti ro iz jednačine (3) u jednačini (2) dobijamo: n nn v nn v n v RK Q r K Q r KK r Q K r Q Kv 331 3 3 3 4 34 3 gde je stavljeno: 1 3 4 3 K n ; KKKv 1 ; R Q r 3 i gde je: R - redukovano rastojanje ili svedeno rastojanje koje predstavlja ...
... There are two parameters K and n in the equation (4) which should be determined for the specific work environment and by par- ticular blasting conditions. With regard to the characteristics of the rock mass oscilla- tion law, it is possible to determine the pa- rameters K and n in a number of ways ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
-
Geostatički proračuni sanacije klizišta šipovima
U ovom radu su, polazeći od rezultata geotehničkih istraživanja, prikazani geostatički proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Stoga se simultano analiziraju stabilnost klizišta i stabilnost šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne uslove u tlu i može da se primeni u složenim geološkim uslovima koji su česti u Srbiji. Analize stabilnosti klizišta vrše se odgovarajućim metodama granične ravnoteže. ...sanacija klizišta, interakcija klizišta i šipa, bočna otpornost šipova, stabilnost klizišta i šipova... iza šipa, određuje зе 17 sledeće Jednačine: о,Ђ 4 К те К, (1) gde je: o — bočni pritisak па dubini z q = ov – vefftikalni napon na dubini 2 c — kohezija К K. - koeficijenti bočnog pritiska tla Dijagrami za određivanje kocficijenta K, i K. dati su na Slikama 2 i 3. Na ovim dijagramima B је ...
... unutrašnjeg trenja. = Ке = 759 К = 222 р c=1–S 80 g=45'__|--1""T" o=40. ——— ·_,··"' /" 50 — _ | = 40 | ___---81.4 — 40 ____ 272 30 Д И 180 7 Н нег i и e = 20 / Д MO рњ О 80 – и јуч / — m __ ју /_„·–, / / рИ ти / з0г ___ __ —> 61.4 10 2 е 257 р K / — рИИИ li — 9.91 K 40 — 250 —y 36.8 q ___ ...
... ___M00 __ ______„ljaž 2 РЖИ њ 10 — 5 7___ 40.2 / -_'_________-–·—···""—–"·_– — 1,93 ;zi:: zip 00 __ —18.14 r= 5 1 ___ | _____log? | ) 4»/"_/ К'„' = 0 2а ф = 0% 2 р & a 2 20 0 5 102/B 15 20 2/8 Slika 3. Koeficijent bočnog.pritiska а koji zavisi od kohezije (Brinč Hansen, 1961) Figure ...Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević. "Geostatički proračuni sanacije klizišta šipovima" in Zbornik radova osmog naučno-stručnog međunarodnog savetovanja - Geotehnički aspekti građevinarstva, Savez građevinskih inženjera Srbije, (2019)
-
Hidrogeološki uslovi i veličina ovodnjenosti P. K. Gračanica" za potrebe racionalne eksploatacije lignita"
Milenko Vasiljević (1988)Milenko Vasiljević. Hidrogeološki uslovi i veličina ovodnjenosti P. K. Gračanica" za potrebe racionalne eksploatacije lignita", Beograd:Rudarsko-geološki fakultet, 1988
-
The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...... is shifted in a presence of AP to 255 nm by formation pepsin – AP? complex for all applied concentrations of aluminium V/[K „d-k/k)} 2 -(k/k)/K,a \ interccpi V/(l-k/k} -0.2 0.0 0.2 0.4 0.6 I/[APF](HM)" Figure 3. The plots of 1 / (change in slope or intercept), (I/A) against 1 / [Al3+] ...
... satisfied, i.e. Ks = Kas KA = K„a and k< K (Scheme 1) [29,35]. Constant KA was calculated from kinetic and equilibrium binding assay data; the obtained values are in good agreement to each other, and are 8.82 + 0.90 . M and 8.39 + 0.76 L.M respect- ively. Other constants, K,A = 8.56 + 0.51 M for ...
... pe rs on al us e on ly . 1006 I7 M. Pavelhic et al. Table I. Influence of AP ? on K Vmaxs Rear and catalytic effectiveness of enzyme (kcar K;,l). [AP*] (M) Ks(mML )\ 'Vanax (RM min _ 1)% kca (min ) k Ks! (min !mM ) 0 0.904 + 0.083 254 + 7 2591 + 70 3264 + 121 1710 % 0.907 + 0.072 332 + ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095
-
Epidotizacija sanidina u kvarclatitima Grota
Propilitska alteracija je veoma česta u gornjokredno-tercijarnim vulkanitima Srbije. Kvarclatiti Grota, otkriveni na dubini od oko 550 m u jednoj od istražnih bušotina su holokristalaste porfirske strukture sa fenokristalima sanidina dimenzija i do 1,5 x 2 cm. Optičkim ispitivanjima su u kvarclatitu potvrdjeni i elementi sitaste, pojkilitske i glomeroporfirske strukture. Kao fenokristali prisutni su sanidin, plagioklas, kvarc, biotit i amfiboli. Sekundarni minerali su hlorit, epidot, coisit, Fe-hidroksidi, redak kalcit i ilit. U fenokristalima sanidina se zapažaju „lepeze“ izduženih kristala ...Danica Srećković-Batoćanin, Suzana Erić, Nikola Novičić, Nikola Pašajlić, Natalija Batoćanin. "Epidotizacija sanidina u kvarclatitima Grota" in III Congress of Geologists of Bosnia and Herzegovina with international participation, Neum, 21. – 23.09.2023, Ilidža : Udruženje/udruga geologa u Bosni i Hercegovini (2023)
-
Long-term planning methodology for improving wood biomass utilization
The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
-
Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)... centrations of materials containing various amounts of ?Ra, 5h and K according to Eq. (1) (UNSCEAR, 2000): Racq = Caa + 143 · Cm + 0.077 · k (1) where Cga, Crh and Ćk are the activity concentrations of ? “Ra, 5Th and “K in Bq kg", respectively. The limit for Ra,q is 370 Bq kg !, set by the ...
... (RS Official Gazette, 2018): Caa Crm Ć i } + 7 MPC(Ra) MPC(Th) MPC(K) Q) where Cgax Crh and Ck are the measured concentrations and MPC (Ra), MPC(Th) and MPC(K) are the maximum permissible con- centrations of “Ra, Th and K, respectively. Equivalent values for building materials used for interior ...
... for ?*Ra, **?Th and “K in building materials used for interiors, exteriors and in civil engineering construction. Label in Interiors Exteriors Civil engineering. Radionuclide — Eq.{(2) (Bq kg”*) (Bq kg'') (Bq kg ) ?5Ra MPC(Ra) 300 400 700 WGLLU MPC(Th) 200 300 500 i MPC(K) 3000 5000 8000 The ...Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11
-
Priprema ležišta za eksploataciju primenom podetažne metode otkopavanja otkopavanja sa zapunjavanjem
Mirko Kurdulić (2024)Rudarstvo je ključna grana industrije koja obezbeđuje osnovne sirovine neophodne za razvoj savremenih tehnologija i infrastrukturnih projekata. Sa razvojem tehnoloških inovacija i povećanjem globalne potražnje za mineralnim resursima, efikasnost i bezbednost u rudarstvu postaju prioriteti. Ovaj diplomski rad istražuje aspekte koji se odnose na optimizaciju, analizu i unapređenje tehnika eksploatacije i obrade mineralnih resursa, sa posebnim fokusom na pripremu ležišta za eksploataciju primenom podetažne metode otkopavanja sa zapunjavanjem otkopa.Podetažna metoda otkopavanja sa zapunjavanjem otkopa u radu će biti analzirana ...rudarstvo, priprema ležišta, optimizacija, eksploatacija, podetažne metode, zapunjavanje, životna sredina... nivoima K-130 ı K-205. Bušotine do K-130 snabdevaju pasta zasipom otkopne nivoe na K-130, K- 110 i K-90, povezane sa etažnim i otkopnim hodnicima. Otkopni hodnici su u vertikalnoj ravni, dok se druge dve bušotine, koje se protežu do nivoa K-205, koriste za snabdevanje nivoa K-205, K-185 i K-165. ...
... gravitaciono spušta na K-150, gde se istače u kamione i transportuje do bunkera primarnog drobljenja. 53 Za drugi eksploatacioni zahvat na nivou K-225, etaža -225 m je utovarno- transportna, a gornje etaže K-205, K-185 ı K-165 su sabirno-transportne. Između K- 225 ıi K-165 izrađuju se dva rudna ...
... čemu se ostavljaju zaštitne ploče za XV horizont (K-75 m do K-90 m) i XVII horizont (K-150 m do K-165 m). 32 Slika 3. Situacioni plan istražnih radova 33 5.PRIPREMA LEŽIŠTA BAKRA 5.1. E;bor i način otkopavanja U intervalu od k-140 do k-260 metara, eksploatacija se sprovodi metodom „ ...Mirko Kurdulić. Priprema ležišta za eksploataciju primenom podetažne metode otkopavanja otkopavanja sa zapunjavanjem, 2024
-
Избор методе подземног откопавања на примеру лежишта бакра
Mилош Глигорић (2024)Тема овог завршног рада је избор методе откопавања у подземном руднику бакра. Рад је подељен на четири поглавља. У првом поглављу дат је приказ општих података и геолошких карактеристика ширег подручја и лежишта. Детаљан опис отварања и припреме лежишта за откопавање представљен је у другом поглављу. У трећем поглављу дат је опис све три варијанте изабране методе за запуњавањем откопаног простора, са освртом на количину захваћене руде, трошковима експлоатације као и динамиком откопавања. Четврто поглавље представља нумерички пример где ...... Ha eTaxKH K-80 m H 3anoueTH Ca OTKOI:IaBaMbeM Ha eTaxxH K-110 m. IIapanenHMM MH3BOlDeMmbeM pajoBa Ha BHIHC OTKOHNHMHX cTaxKa OcTBapHhe ce KOHTHHyHTeT y IIpOH3BOJUbH Tc he ce y Tpehoj H ucTBpTOJ TOJUHHH BpIIHTH OTKOIHaBaMbe Ha eTa;KaMa K-110 m, K-140 m, K-65 m H jeJIHHM JIČJIOM Ha K-95 m. CMabbe0be ...
... 27 TipHnpeMHux IHpocTopuja, MOK ce Ha eraxkXaMa K-140 m u K -65 m sanouHme ca H3PpaJlOM HcTHX. Ca MCTBPpTOM FOJIHHOM OKOHHUAaBa Cc H IIpHIpeMa OTKOIIHHX cTa;Ka K-140 m i K-65 m, nok ce rnapajteJtHo H3BOJIe ripHnpeMHH pajloBa Ha eraxKH K-95 m. 3anpmreerak oTKonaBabe y I eKcniiOaTanHOHOM mojacy ...
... eraxxu K-80 m (rpeocranux mpocropuHja) H 3anouHM»y Ce pajlioBH Ha ripHnpeMaby OTKornHe ecTaxxe K-110 m. MHHreH3Hrer Hapajne rpuHnpeMHHx ripocropuja y rTpehoj 1 ueTBpToJ ronaHu Je TOTOBO HCTH, Jep Ce y THM TOJHHaMa OucKyje HOCTH3AM=C HJIČHTHUHOT TOJUHIHIH5eT KananuTeTa IHpoH3BOJMe. Ha eraxu K-1IO0 ...Mилош Глигорић . Избор методе подземног откопавања на примеру лежишта бакра, 2024
-
Lowest possible flow temp. offers savings vs. pour point
Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav (2013)Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav. "Lowest possible flow temp. offers savings vs. pour point" in Oil & Gas Journal 111 no. 8, Houston:PennWell Corp (2013): 86-90. https://doi.org/10.1016/j.energy.2014.02.017
-
Epidotized sanidine in quartzlatites from Grot
Propilitska alteracija je veoma česta u gornjokredno-tercijarnim vulkanitima Srbije. Kvarclatiti Grota, otkriveni na dubini od oko 550 m u jednoj od istražnih bušotina su holokristalaste porfirske strukture sa fenokristalima sanidina dimenzija i do 1,5 x 2 cm. Optičkim ispitivanjima su u kvarclatitu potvrdjeni i elementi sitaste, pojkilitske i glomeroporfirske strukture. Kao fenokristali prisutni su sanidin, plagioklas, kvarc, biotit i amfiboli. Sekundarni minerali su hlorit, epidot, coisit, Fe-hidroksidi, redak kalcit i ilit. U fenokristalima sanidina se zapažaju „lepeze“ izduženih kristala ...Danica Srećković-Batoćanin, Suzana Erić, Nikola Novičić, Nikola Pašajlić, Natalija Batoćanin. "Epidotized sanidine in quartzlatites from Grot" in Book of Abstracts, III Congress of Geologists of Bosnia and Herzegovina with international participation, Neum, 21. – 23.09.2023, Ilidža : Udruženje/udruga geologa u Bosni i Hercegovini (2023)
-
Istraživanje faune makrozoobentosa u izvorima
K. Belanović, I. Živić, Z. Marković, Ilić Marija, M. Radulović, M. Živić. "Istraživanje faune makrozoobentosa u izvorima" in Rizici i eko -bezbednost u postmodernom ambijentu -Internacionalna konferencija, septembar 19-12 jun, Novi Pazar, Novi Pazar:Državni univerzitet u Novom Pazaru (DUNP) (2010): 89-97
-
Constraints on the sources of post-collisional K-rich magmatism: The roles of continental clastic sediments and terrigenous blueschists
Wang Yu, Prelević Dejan, Buhre Stephan, Foley Stephen. "Constraints on the sources of post-collisional K-rich magmatism: The roles of continental clastic sediments and terrigenous blueschists" in Chemical Geology, :Elsevier BV (2016). https://doi.org/DOI:10.1016/j.chemgeo.2016.10.
-
Radiometric K/Ar data as evidence of the geodynamic evolution of the Zdraljica Ophiolitic Complex (central Serbia)
Resimić-Sarić Kristina, Cvetković Vladica, Balogh Kadosa. "Radiometric K/Ar data as evidence of the geodynamic evolution of the Zdraljica Ophiolitic Complex (central Serbia)" in Annales Géologiques de la Péninsule Balkanique no. 66, Beograd: Rudarsko-geološki fakultet (2005): 73-79
-
Serbo-Macedonian Magmatic and Metallogenetic Belt revisited: four examples of the link between magma mixing and mineralization processes.
В. Цветковић, К. Шарић, Д. Прелевић.. "Serbo-Macedonian Magmatic and Metallogenetic Belt revisited: four examples of the link between magma mixing and mineralization processes." in Magmatism of the Earth and related strategic metal deposits, August 4-9, 2017, Institute of Mineralogy the Ural Branch of RAS in Miass, Ilmen mountains (Chelabinsk Region), (2017): 52-55
-
Analysis of Household Coal Consumption in Serbia Based on Grey System Theory and K - means Clustering (Base for Network Optimization)
Gligorić Zoran, Gligorić Miloš, Štrbac-Savić Svetlana. "Analysis of Household Coal Consumption in Serbia Based on Grey System Theory and K - means Clustering (Base for Network Optimization)" in 1st Virtual International Conference on Science, Niš:Research and Development Center ALFATEC (2015): 45-48
-
High-K volcanism in the Afyon region, western Turkey: From Si-oversaturated to Si-undersaturated volcanism
Akal Cüneyt, Helvaci Cahit, Prelević Dejan, van den Bogaard Paul. "High-K volcanism in the Afyon region, western Turkey: From Si-oversaturated to Si-undersaturated volcanism" in International Journal of Earth Sciences 102, Heidelberg, Germany :Springer-Verlag (2013): 435-453. https://doi.org/10.1007/s00531-012-0809-9
-
Cenozoic igneous tectonomagmatic events in the Serbian part of the Balkan peninsula: inferences from K/Ar geochronology
Cvetković Vladica, Pécskay Zoltan, Šarić Kristina. "Cenozoic igneous tectonomagmatic events in the Serbian part of the Balkan peninsula: inferences from K/Ar geochronology" in Acta Volcanologica 01-Feb no. 25, Fabrizio Serra editore - Pisa-Roma :Italian Association of Volcanology (2013): 111-120. https://doi.org/http://dx.doi.org/10.1016/j.jv