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Упит dcterms_creator_txt:Rolf L. Romer

722 items

  • Scanning Electron Microscopy Coupled with Energy Dispersive Spectrometric Analysis Reveals for the First Time Weddellite and Sylvite Crystals on the Surface of Involucral Bracts and Petals of two Xeranthemum L. (Compositae) Species

    Milan Gavrilović, Suzana Erić, Petar Marin, Núria Garcia-Jacas, Alfonso Susanna, Pedja Janaćković (2017)

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... Technickeć university v Ostrave, 18—31. Ožvoldova, L., 1998. Middle Jurassic radiolarian assemblages from radiolarites of the Silica Nappe (Slovak Karst, Western Carpathians). Geologica Carpathica, 49: 289-296. OžvoldovaA, L. & Frantov4, L., 1997. Jurassic radiolarites from the eastern part ...
    ... „ a \D D\u |eSu p— — | | L= ——— 1 15 2 25 3 35-%6-5— -3 21 00 50 i _ green radiolarites — spotted limestones — Soltysia Maristone Fm: calcareous EJ ŠŽŠ,:'.'::ŽŽ." ii K K= uperparofihe spotted limestones and marls — O dinoflagellates Sokolica Radiolarite m | =l komy Limestone Mb ž o calpionellids ...
    ... on the slope of Pošrednia Kopka Hill (Fig. 1; Table 1). It is composed of three partial sections (L, Lb and Ld), with a measured thickness of 66 m (Fig. 4A). The lowermost part of the section (L) is exposed in a small rocky cliff on the southern slopes of Pošrednia Kopka Hill. The middle part ...

  • Tehnologija izrade jamskog magacina eksploziva i eksplozivnih sredstava

    Sara Nikolić (2024)
    Završni rad sa temom „Tehnologija izrade jamskog magacina eksploziva i eksplozivnih sredstava” sastoji je iz opšteg dela i specijalnog dela. U opštem delu prikazani su : geologija ležišta, određivanje kapaciteta magacina eksplozivnih sredstava, lokacija i opis magacina. U specijalnom – drugom delu ovog završnog rada prikazani su: potrebni proračuni, tehnologija izrade magacina, predmer i predračun radova, normativi materijala, energije i radne snage, organizacija i dinamika izvodjenja radova. Prilikom izrade završnog rada, uz primenu svih propisa vezanih za ovu oblast, korišćene su ...
    magacin, eksploziv, sredstva za iniciranje, hodnik, komor
    ... 15m?. Specifični otpor cevi prečnika Q=400mm iznosi raoo = 0,002Ns*/mš, pa je otpor cevovoda dužine L=150m: R=L · r400 = 150 · 0,002 =0,3Nsž2/m8 (6.21) Koeficijent gubitka vazduha iznosi: _{1 L f1 150 j p= š·h·d·T·\/EH = š·0,001·0,4·3·1/0,%1 =1,0011 (6.22) gde jJe: h=0,001, - koeficijent ...
    ... I MINIRANJE 6.LI. Proračun parametara bušenja i miniranji 6.2. PROVETRAVANJE 6.2.l. Provetravanje radilišta. 6.2.2. Provetravanje MES u fazi eksploataci 6.3. UTOVAR I TRANSPOR' 6.4. PODGRAĐIVANJE 6.4.l. Betonska podgrada. 6.4.2. Sidrena podgrada 6.4.3. Torkret beton 6.5. ODVODNJAVANJE ...
    ... ZO.203 na niski svod sa sledećim dimenzijama: svetla širina b=2,0 (2,2)m, visina h=2,5 m i dužina L=3,0 m. OK-5, koja je locirana naspram Komore za eksploziv (KE) i ima dimenzije b=3,1 m, h=2,5m i L=3m. Na slici br. 4.2. date su lokacije i položaj OK, a na slici br. 4.5. dimenzije i poprečni ...

  • Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area

    Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić (2016)
    jurski sedimenti, uran, torijum, elementi retkih zemalja, podzemna voda, istočna Srbija

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
    ... (2001) 205. [11] E.J. Gao, F.C. Liu, M.C. Zhu, L. Wang, Y. Huang, H.Y. Liu, S. Ma, Q.Z. Shi, N. Wang, Enzyme Inhib. Med. Chem. 25 (2010) 1. [12] E.J. Gao, L. Wang, M.C. Zhu, L. Liu, W.Z. Zhang, J. Med. Chem. 45 (2010) 311. [13] R. Jose, D.V. Marıa, C. Natalia, L. Gregorio, H. Concepcion, B. Delia, M. Virtudes ...
    ... = isonicoti- namide have very small anticancer but significant antituberculous activity [19] while complexes with amino alcohols, such as L-pro- linol, L-valinol, L-isoleucinol show certain antitumor activity [20]. As a part of our interest in the synthesis, structure and reactivity of coordination complexes ...
    ... Day, U. Bierbach, J. Med. Chem. 50 (2007) 2259. [16] E.J. Gao, M.C. Zhu, H.X. Yin, L. Liu, Q. Wu, Y.G. Sun, J. Inorg. Biochem. 102 (2008) 1958. [17] J. Zhang, L. Li, L. Wang, F. Zhang, X. Li, Eur. J. Med. Chem. 45 (2010) 5337. [18] C.Y. Shi, E.J. Gao, S. Ma, M.L. Wang, Q.T. Liu, Bioorg. Med. Chem. ...

  • Primjena magnetometrijskih ispitivanja na arheološkom lokalitetu Nedeljkova humka

    Mirko Petković, Vesna Cvetkov, Milorad Ignjatović, Dejan Naumov (2020)
    ... prethodni. Ovakav način nošenja instrumenta naziva se još i „cik-cak“ način akvizicije. 27 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e Drugi način akvizicije, paralelni način, od gore opisanog ...
    ... reno 11689 vrijednosti vertikalnog gra- dijenta geomagnetskog polja. 28 C u r re n t i n t e rd i s c i p l i n a r y s t u d i e s i n t e c h n o l o g y i n t h e a rc h a e o l o g y o f t h e s o u t h - e a s t E u ro p e Magnetometrijska je istraživa- nja obavljeno protonskim ...

  • Анализа квантитативног и квалитативног режима подземних вода: Случај изворишта за водоснабдевање Друговца у Смедереву

    Милан Павличић (2024)
    У раду су приказани резултати истражних радова који су спроведени у периоду од 13.04.2018. до 31.05.2019, у циљу дефинисање режима и категоризације резерви подземних вода на изворишту за водоснабдевање Друговца у Смедереву. Бунарима ИЕБДР-1/93 и ИЕБД-1/2002 су каптирани песковити седименати неогене старости. У току режимских осматрања вршени су тестови црпења, осматрања нивоа подземних вода, режимa падавина као и квалитетa подземних вода. Утврђене су укупне резерве подземних вода у количини од 5,3 l/s. Хемијске анализе воде показују да је хидрохемијски ...
    режимска осматрања, тестови црпења, неогени седименти, хидрохемијски режим, извориште
    ... Konu(bopMHe Gakrcpuje (bekaJiHor < < <l <l Hč ŽMČ nopek:a (0p./100 ml) a cajlpxxH CrpenToKoke (bekKajiHor nopekja <l He CMC < < < mna (0p./100 ml) cajip)KH Cyndurope/nykryjyhe < knocrpuzmije (Gp./100 ml) < < < s IIpoTeyc BpcTec He CMC < < < mna (6p./100 ml) <l cajlp;KH 70 11.05.2018. 15 ...
    ... 13 l/s a Q-=1,65 I/s. V roky OCMaTpaMba HHBOa y Tpaja»y OJL map caTH Hpe HOueTKa TecTa H3MecpeHH CTaTHuKH HHBO H3Hocuo Je H.„=73,42 m, MepeH ojJr ycra OyHapa. IIpBHM KamanuTeTOM OJ Qi=1,13 l/s ocrBapena je nenpecuja ojx S=3,07 m, pabeuo Je 6 caru Kajta Je IpoMePbeH KanaruireT Ha Q:=1,65 l/s kojaM ...
    ... bakyanrer yHauBep3urera y Beorpajty. . IIapmoBHh, 3., (1977.): OT-K 1:100.000 nucm , Ceo0epeso“ L 34-126 ca Tywauew. 3aBojn aa reomomrika, xujporeonmormrika, reobH3Huka H reorexHHuka HcTpaxxXHBama-l coa3aBo/l, OOVP T eononriku aHcraryr, Beorpajt. . IIonouuh /I. (2021.): Hseopuuma u saxeamu no03eMHux ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... synthetic extent is calculated using; the following; equation: m i n m -1 m m m 1 1 1 S -Ž MLe|.2.MA, |Ž,D-> 552 d|| _—R — L — j=1 i=1 j=1 jel jcl je1 Mdj XOsj M i=l i=l i=1 Step 3. The degree of possibility of two triangular fuzzy numbers is deter- mined using; the fuzzy number comparison approach: ...
    ... helped improve the quality of the paper. C. R. Acad. Bulg. Sci., 76, No 9, 2023 1419 REFERENCES 1| ZADEH L. A. (1965) Fuzzy sets, Information and Control, 8(3), 338-353. ZADEH L. A. (1975) The concept of a linguistic variable and its application to pproximate reasoning,, Information sciences ...
    ... decision making., the criteria are described by linguistic variables and represented in the form of triangular fuzzy numbers (membership functions: “L, S, D”). On the one aand, the criteria are analyzed and evaluated using, a scale of relative importance. On the other hand, mathematical optimization ...

  • Specifičnosti fundiranja u lesnim naslagama – objekat Poreska uprava Zemun

    Anja Dević (2024)
    U ovom završnom radu prikazani su literaturni podaci koji se odnose na geotehničke karakteristike terena izgrađenih od lesa na primeru šireg istražnog prostora, tzv. Zemunskog lesnog platoa, kao i rezultati detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun. U prvom delu rada prikazani su uslovi nastanka karakteristične makroporozne strukture lesa i njen uticaj na fizičko-mehaničke karakteristike i stabilnost terena izgrađenih od lesa. Na osnovu analize i interpretacije rezultata detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun prikazane su ...
    struktura lesa,stišljivost, nosivost, sleganje, plitko fundiranje i duboko fundiranje
    ... 10 24 Aoza = 4*qn* l,, = 4*52*0.217 = 45.14 kPa Za tačku A na dubini zs = 3.2 + 1.5 +5.6+— = 11m: L/2 _ 139/2 _ 695 B/2 · 20/2 ~ 10 = 6.95 Z. 11 B/2 10 Aogs = 4*qn* l,,s = 4*52 *0.195 = 40.56 kPa Za tačku A na dubini ze = 3.2 + 1.5 + 5.6 + 1.4 + ** = 13.9 m: L/2 139/2 695 B/2 · 20/2 ...
    ... Naponiod dopunskog opterećenja: Za tačku A na dubini z, =0m: L/2 139/2 ” 69.5 = —— = —_ =6.95 B/2 - 20/2 10 Ž _ O _ o , m =0,5 = — = > = · B/2 10 ž1 Aozi = 4* q * l = +*52*0.25 = 52 kPa Za tačku A na dubini z, = 1.0 m: L/2 139/2 ~ 69.5 B/2 „20/2 ~ 10 = 6.95 Z, 16 —— = — =0.16 — ...
    ... Za tačku A na dubini z, = 3.2 + % = 3.95 m: L/2 139/2 ~ 69.5 B/2 · 20/2 — 10 = 6.95 5 _ 9905 _ 03095 — |. = 0.244 = = . —> = . B/2 10 23 Aoga = 4* qn * l, = 4*52 * 0.244 = 50.75 kPa Za tačku A na dubini za = 3.2 + 1.5 + 5246 =7.5 m: L/2 139/2 ~ 69.5 B/2 „20/2 ~ 10 = 6.95 Ž _ 75 ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Some examples of interactions between certain rare earth elements and soil

    Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski (2021)
    Freundlich adsorption isotherm, sequential extraction, metallic ions, ICP-OES
    ... c1 /m)V (1) where q is sorption capacity (mg g-1), co initial metallic ions solution concentration (mg L-1), c1 equilibrium concentration (mg L-1), m adsorbent mass (g) and V the solution volume (L).19 Preparation of soil samples for sequential extraction Dry samples of soil (sand, humus and clay ...
    ... Phase II: in each bottle containing soils from phase I was added 100 mL of 0.2 mol L-1 hydroxylamine hydrochloride and 0.02 mol L-1 hydrochloric acid solutions. The pH value was adjusted by adding 0.6 mol L-1 hydrochloric acid up to the value of about 4. Extraction at rota- tional shaker lasted ...
    ... for sequential extraction. The concentration of stock solution amounted to 2000 mg L-1, and working solutions used for determining sorption capacity and Freundlich adsorption isotherm were in the range of 500– 1500 mg L-1. All solutions were analyzed by ICP-OES technique (SPECTRO- BLUE TI). The calibration ...

  • Метода променљивих околина за решавање проблема p-центра са поузданом мрежом

    Јована Рађеновић, Стефан Мишковић, Оливера Станчић (2023)
    У овом раду је разматран проблем p-центра са поузданом мрежом (енгл. Reliable p-center facility location problem - RpCFLP). Решавање проблема подразумева иницијално успостављање p ресурса и алокације корисника, као и накнадну реалокацију корисника у складу са новонасталим сценаријима који садрже информације о онеспособљеним ресурсима и осталим измењеним улазним подацима. За решавање посматраног проблема предложена је метахеуристика заснована на итеративној варијанти основне методе променљивих околина (енгл. Iterated basic variable neighborhood search - IBVNS). Резултати тестирања предложене метахеуристике указују на њену ...
    Проблем p-центра, Робусна оптимизација, Метода променљивих околина

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... ig . 1 1 . T h e ca n o n ic a l v en ti la ti o n sc h em e o f th e “ S o k o ” co a l m in e. M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 ...
    ... ea r v en ti la ti o n sc h em e o f th e “ S o k o ” co a l m in e. M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 5 . F o r p er so ...
    ... . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 5 . F o r p er so n al u se o n ly . 362 N. Lilić, I. Obradović & R. Stanković Implementation and ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... pH Alkalitet (mmol/l) Tvrdoća (mg CaCO3/l) Mg (mg/l) Ca (mg/l) TOC (mg/l) DOC (mg/l) Ni (µg/l) 7,10 1,10 77,6 18,4 0,686 3,09 2,20 32,0 Ispitivana površinska voda spada u red malo do umereno mineralizovanih voda, dok se u pogledu tvrdoće (77,6 mg CaCO3/l), svrstava u kategoriju ...
    ... su različite ekstrakcije u jednom koraku (dejonizovana H2O tokom 2 h i 16 h, 0,01 mol L-1 CaCl2, 1 mol L-1 BaCl2, 0,1 mol L-1 NH4NO3, 0,1 mol L-1 NaNO3, 0,05 mol L-1 Na2EDTA, 0,11 mol L-1 CH3COOH i 0,44 mol L-1 CH3COOH) koje simuliraju prirodne procese u životnoj sredini i pseudo-ukupna digestija ...
    ... glicerol 16,67 g/l, K2HPO4 5 g/l, MgSO4∙7H2O 0,3 g/l (pH 7,0±0,2) Temperatura 28°C Brzina mešanja 150 o/min Brzina aeracije 1,15 l/min Trajanje 96 h Testiranje antimikrobne aktivnosti YMA (Yeast Maltose Agar) Polusintetička podloga Glukoza 15 g/l, ekstrakt kvasca 3 g/l, sladni ekstrakt ...

  • Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer

    Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)
    ... geological entity that spreads over the territory ofseveral countries. The central | ,,, il i *ti':i !l:i!lr::l llr,:ir',. 'lii l:l' : i::,;!l ritl ::lli;' ;:iiii li:i till: j l.,tt,:ii:l.i.r!:i:.i, ,,:t .,a::.: ::::iia:); t: ""#d? ,& x' fi Ji ,ffi r44 | 4 Transboundary Aquifers portion ...
    ... 100000 z* x -7^*, \-,/. Muoooo $) *0000 40000 200uu 20000 660000 480000- EOY *roPooo .l $n) 640000 I czoooo r000 0 *1000 *2000 r c -3000 o 9 -+ooo !) E -5000 -6000 -7000 -8000 *"l,o,Tio 75oooo Figure 4.9.2 Three-dimensional model and general cross section through the study area ...
    ... pp. 1.01-112. s Volgyesi, L (2006) A Homokhdts6g felszinalatti vizhiztafilsa. Vizp6tl6si 6s visszatartlsi leheto s6gek, MHT XXIV' Orszdgos Vdndglu l6s ICadvdnya. P6cs. g Stevanovi6, Z.,Lazil M., Polomci6, D., Milanovid, S., Haidin, B', PaPi6, P., Sorajii, S. and l{jaji6, Z' (2008) Sustainable ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... 570 mg/L [8]. Highly alkaline water (pH > 9), a rare natural occurrence, also is characterized by elevated silica. Amorphous SiO2 (60-80 mg/L at 0 °C; 100-140 mg/L at 25 °C; 300-380 mg/L at 90 °C) is much more soluble than the almost insoluble crystalline SiO2, quartz in particular (6 mg/L at 25 °C) ...
    ... Gejzir Hotel of Sijarinska Banja. The heat power avail- able to the industry was 2.5 MW from thermal water pumped at the rate of only 15 l/s. At the maximum rate of 30 l/s, the available heat power would be 5 MW. Milojevi} et al. [4] consider us- ing geothermal water for heating green-houses near Jošani~ka ...
    ... located in the spa of Vranjska Banja, followed by Kuršumlijska, Sijarinska, and Jošani~ka spas and Bogati} of Ma~va. Pumped at the present rate of 200 l/s, the mentioned sources may generate 70 MWt, of which some 30 MWt the Vranjska Banja alone. Total power (for the five tested resources) is estimated ...

  • Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif

    Ljiljana Vasić, Laszlo Palcsu, Huang Fen (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)