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Упит dcterms_creator_txt:Dragoslav R Rakić

902 items

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... in d ic a to r Questionnaire: Bulldozer Liebherr – Drmno Open Pit Mine Grade: Excellent Good Average Adequate Poor The degree of affiliation, % 1 R 40 60 M 100 S 100 2 R 20 80 M 100 S 50 50 3 R 100 M 100 S 100 4 R 80 20 M 80 20 ...
    ... terms and Caterpillar as "good" in terms of R and S and "excellent" in term of M. This can be written in the form: R(A1-Lib.) = 0.4/good,0.6/avr; M(A1-Lib.) = 1/avr; S(A1- Lib.) = 1/adeq; R(A1-Drs.) = 1/avr; M(A1-Drs.) = 1/avr; S(A1-Drs.) = 1/avr; R(A1-Cat.) = 1/good; M(A1-Cat.) = 1/exel; S(A1-Cat ...
    ... basin are: R(A2-Lib.) = 0,2/good,0.8/avr; M(A2-Lib.) = 1/good; S(A2- Lib.) = 0,5/aver, 0.5/adeq; R(A2-Drs.) = 0,2/good,0.8/avr; M(A2-Drs.) = 1/good; S(A2- Drs.) = 0,5/aver, 0.5/adeq; R(A2-Cat.) = 0.8/exc,0.2/good; M(A2-Cat.) = 0.6/good,0.4/avr; S(A2-Cat.) = 0.5/good,0.5/avr; R(A3-Lib.) = 1/good; ...

  • Properties of fly ash and slag from the power plants

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...
    fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method
    ... 28) R(0.37) CaO(0.84) SO3(0.92) SiO2(0.89) Al2O3(0.93) R(0.82) Na2O CaO(0.47) He(0.34) pH(0.43) f(0.49) CaO(0.82) He(0.38) pH(0.99) f(0.45) K2O Q(0.69) SiO2(0.68) CaO(0.49) He(0.90) R(0.77) w(0.16) <2.9(0.47) AM(0.57) Q(0.48) SiO2(0.82) CaO(0.84) He(0.53) R(0.99) w(0.99) <2.9(0.68) AM(0.98) R He(0 ...
    ... 24) Kr(0.70) He(0.41) Ml(0.58) R(0.40) Na2O(0.99) Fe2O3(0.99) Kr(0.99) He(0.25) Ml(0.25) R(0.97) w CaO(0.65) K2O(0.33) Al2O3(0.80) SiO2(0.44) He(0.08) R(0.74) CaO(0.97) K2O(0.78) Al2O3(0.36) SiO2(0.65) He(0.34) R(0.96) <2.9 w(0.39) CaO(0.55) K2O(0.63) Al2O3(0.43) M(0.75) R(0.58) w(0.63) CaO(0.47) K2O(0 ...
    ... the chemical composition the module R is deter- mined, and is shown in Fig. 5. The R module is used for deter- mination of ash and slag classification according to the chem- ical composition. The formula for determining the R module is: 2 3 2 3 ( ) ( ) SiO AlO R CaO MgO Fe O + = + + (1) According ...

  • Korelacija magnetnog susceptibiliteta i sadržaja metala u flotacijskom jalovištu

    Filip Abramović, Vesna Cvetkov, Aco Ilić, Dragana Životić (2022)
    Procena metala u rudama, jalovištu i zemljištu se tradicionalno određuje hemijskim metodama kao što su Rengen fluorescentna analiza (XRF), Instrumentalna neutronska aktivaciona analiza (INAA) i Masena spektrometrija induktivno spregnute plazme (ICP-MS). Neke od pomenutih metoda su veoma zahtevne i skupe, te se nametnula potreba ka traženju jeftinijeg alata za brzu procenu prisustva pojedinih metala. Tokom poslednjih nekoliko decenija, mnoge studije su pokazale da su magnetna merenja dovoljno osetljiva da detektuju magnetni signal feromagnetnih materijala, a samim tim i metala ...
    flotacijsko jalovište, makroelementi, magnetna merenja

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... 0 = LT-R*0.3 + SI-R*0.175 + AP-R*0.175 + EI-R*0.175 + LU-R*0.175 (2) WLT-TLSR500 = LT-R*0.3 + SI-R*0.175 + AP-R*0.175 + EI-R*0.175 + LU-R*0.175 (3) WSI-TLSR100 = LT-R*0.175 + SI-R*0.3 + AP-R*0.175 + EI-R*0.175 + LU-R*0.175 (4) WSI-TLSR500 = LT-R*0.175 + SI-R*0.3 + AP-R*0.175 + EI-R*0.175 + ...
    ... + LU-R*0.175 (5) WAP-TLSR100 = LT-R*0.175 + SI-R*0.175 + AP-R*0.3 + EI-R*0.175 + LU-R*0.175 (6) WAP-TLSR500 = LT-R*0.175 + SI-R*0.175 + AP-R*0.3 + EI-R*0.175 + LU-R*0.175 (7) WLU-TLSR100 = LT-R*0.175 + SI-R*0.175 + AP-R*0.175 + EI-R*0.175 + LU-R*0.3 (8) WLU-TLSR500 = LT-R*0.175 + SI-R*0.175 ...
    ... TLSR100-500 = LT-R + SI-R + AP-R + EI-R + LU-R (1) Where: TLSR – total landslide susceptibility rating (for return period of maximum expected seismic (earthquake) intensity for 100 and/or 500 years) LT-R – value of rating for lithological type SI-R – value of rating for slope inclination AP-R – value of ...

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум

  • Reprint of Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: implication on grindability index

    Životić Dragana, Bechtel A., Sachsenhofer R., Gratzer R., Radić D., Obradović M., Stojanović Ksenija (2015)

  • Geonasleđe Golije i Peštera

    Ljiljana V. Grujičić-Tešić (2017-09-01)
    Sprovedena istraživanja u ovoj studiji obuhvatila su izdvajanje, opis, evaluaciju i valorizaciju objekata geonasleđa u cilju razvoja istraživane oblasti sa stanovišta geonauka, geoturizma i geoekologije. Na izučavanom području objekti geonasleđa su evidentirani, interpretirani, vrednovani i kategorisani, dat je predlog promocije geoobjekata, i na kraju predložena dopuna inventara objekata geonasleđa Srbije.U protekle četiri godine, na kompleksu geotopa Golije i Peštera istražena su geološka svojstva stena (tip stene, starost, fosilni sadržaj, morfološke i hidrogeološke karakteristike itd.), na osnovu čega je bilo ...
    geodivezitet, geonasleđe, geoturizam, geokonzervacija, Golija, Pešter
    ... poluostrva. 76. pp. 105–113. Marković, B., Urosević, M., Pavlović, Z., Terzin, Z., Jovanović, Ž., Karović, J., Vujisić, V., Antonijević, R., Malesević, M., Rakić, M. (1968): Osnovna geološka karta SFRJ 1: 100000. Tumač za list Kraljevo K34 - 6 - Savezni geološki zavod. Beograd. Mijović, D., Rundić ...
    ... VREDNOSTI (DV) UPOTREBNA VREDNOST (UV) RANJIVOST (R) U K U P N A V R E D N O S T ( U V O ) = (3 × N Z ) + ( 2 × D V ) + ( 2 × U V ) + (2 × R ) / 2 ,5 Je di ns tv en os t (J ) R ep re ze nt at iv no st ( R P ) K om pl ek sn os t (K ) O br ...
    ... K A T G EO N A SL EĐ A GLAVNE VREDNOSTI (Mn) DODATNE VREDNOSTI (Av) G L A V N E V R E D N O S T I (M n) D O D A T N E V R E D N O S T I (A v) R et ko st R ep re ze nt at iv no st Z na nj e o ge ol . n au ka . N iv o in te rp re ta ci ...

  • The effect of finite driving rate on avalanche distributions

    Sonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević (2021)
    Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear Physics

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... International Publishing AG 2017 N.T. Nguyen et al. (Eds.): TCCI XXVI, LNCS 10190, pp. 1–24, 2017. DOI: 10.1007/978-3-319-59268-8 8 A u t h o r P r o o f 2 R. Stanković et al. In general, if the response to a user query related to a collection of documents is performed by keyword search of these ...
    ... engineering geology, as a modern and efficient information basis for planning, design and decision- making in the geological domain. A u t h o r P r o o f 4 R. Stanković et al. Within the GeolISS project a web portal1 was developed with the aim to pro- vide quicker and easier access to geological ...
    ... in Fig. 1. The panel shows that the system found 4 results, and appropriate document snippets are displayed. For each document A u t h o r P r o o f 6 R. Stanković et al. there is also a link enabling the user to look into further details on the retrieved document. The user can chose the maximum ...

  • Хазард од клизишта у Србији у 21. веку

    Biljana Abolmasov (2019)
    клизишта, хазард од клизишта, промене климе
    ... ����› �� ›������ ������ ������ �� �� ›�� ��  ������� �������: R = H x V(E R ) (1) ���  �: R � �›���� ����›, H � ������, V � �������� � � � R � �������� � ���- ������ � ����›�. ������ �� ›������� (Landslide Hazard) ���� ����� ��›������ �������- ���� ...
    ... DISASTERS Accepted at the 4 � meeting of the Department of Mathematics, Physics and Geosciences on 24 May 2019 E d i t o r VLADICA CVETKOVI� Corresponding Member of SASA B E L G R A D E 2 0 1 9 ������ ����� ��� ����� � � ������� ������ ��������� ����� 5 ��������� � ������ � 21. ���� � ����� ...
    ... ������� ����›� ����  � ����������� ��  ��›� � �������� � ����›� �  ����� ›� ���� �����  ��������� ����› (R � ). 21. > 69 > 7 v v [8], [9], [10], [11], [12], [13], > _ > > 1 > [8] > > > ») (1)R = H > >», A , Vv. - > > (Landslifie Hazard > - > > >, > i P(A x PINx S H (2) > > >. 1 A, N e > Ss >» > (Landslide ...

  • On the distribution modulo 1 of the sum of powers of a Salem number

    Dragan Stankov (2016)
    It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Допринос одређивању безопасног растојања при извођењу минирања

    Slobodan Trajković, Sanja Bajić, Ivan Krsmanović (2023)
    минирање, експлозија, потреси од минирања
    ... rzacuH [2,3]: v=-K,R .1 ede cy: – Op3uHa ocnuJIoOBabba uecTHIIa TJIA V MHHMHpabeM no0yleHe cpejiHe, cm/s – KOCOD. H ČKCHOHCHT KOJH 3A4BHCC OJL IŽ“ yCHOBa MHHHpaMba H KapaKkTepHcTHKa pajiHe cpejuHe, - pejNlyKOBaHO pacToOjaĐe, KOje CC R MOXE H3pa3HTH OJIHOCOM R=r/{Qa p pacrojape OJ MeCTa ...
    ... O0e30ebDeHa je y3 ycJloB: r>15,797 3/Qa, „(m) (3.6.) rnmeje: r—-— (OesonacHo pacrojabe,(m) 178 Quk — yKyHHO yHnoTpcOJbeHa KOJIHUHHA eKcIIo3HBa, (kg). rpH MeMy TpeOa BOJIHTH pauyHa, Ipe CBaKOTr | MMHHHpaPa, a pe)nyKoBaHo pacrojaec (R) Oyne Behc HHH jemHako R > 15,797 rama he oueKHBaHa Op3HHa ...
    ... MOTy OJIpa3HTH Ha OKOJIHe O0jekTe. r= 15.797 Q B e z b e d n o ra st oj an je , r (m ) O 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 Kolicina eksploziva, Q (kg) Cimka 3.2. KpaBa Oe3onacHor pacrTojahba (r) y 33BHCHOCTH OJI KOJIHUHHC CKCIIJIO3HBa ...

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu

    Željko R. Cvetković (2013-11-18)
    Čestice iz vazduha su prikupljane u blizini termoelektrane i površinskih kopovarudnika uglja u Kolubarskom basenu. Izmereni srednji sadržaji koncentracija rastvornih,nerastvornih i ukupnih taložnih materija na godišnjem nivou prelaze 200 mg/m2dan (K-1, K-3, K-4, K-5). Distribucija čestica na svim lokacijama klasifikovana je na česticeveličine veće od 10 μm, zatim na čestice veličine od 10 μm do 2,5 μm i klase česticaveličine ispod 2,5 μm. Ovakva podela je dala odnos koncentracija inhalatornih irespiratornih čestica po mernim mestima. Skenirajuća elektronska mikroskopija jepokazala ...
    mineral, četica, prašina, leteći pepeo, aerosediment, PM10, teški metali,koncentracija, veličina čestice, Kolubara
    ... J 1 0 M J2 _ 5 JL 1 0 J P R 1 0 D P R 1 0 JL P R 1 0 A V P R 1 0 S P R 1 0 F P R 1 0 O P R 1 0 N P R 1 0 JN P R 1 0 M JP R 1 0 A P R 1 0 A 1 0 M P R 1 0 A V 1 0 D 2 _ 5 N ...
    ... 600 800 1000 1200 F E B R U A R / D E C E M B A R N O V E M B A R JA N U A R /0 O K T O B A R S E P T E M B A A V G U S T J U L J U N A P R IL M A R T M A J F E B R U A R JA N U A R Sl. 77 . Klaster dijagram ...
    ... 300 400 500 600 O K T O B A R A V G U S T F E B R U A R / JA N U A R /0 S E P T E M B A J U L D E C E M B A R N O V E M B A R J U N F E B R U A R M A R T A P R IL M A J JA N U A R Sl. 78 . Klaster dijagram ...

  • Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu

    Željko R. Cvetković (2013-11-18)
    Čestice iz vazduha su prikupljane u blizini termoelektrane i površinskih kopovarudnika uglja u Kolubarskom basenu. Izmereni srednji sadržaji koncentracija rastvornih,nerastvornih i ukupnih taložnih materija na godišnjem nivou prelaze 200 mg/m2dan (K-1, K-3, K-4, K-5). Distribucija čestica na svim lokacijama klasifikovana je na česticeveličine veće od 10 μm, zatim na čestice veličine od 10 μm do 2,5 μm i klase česticaveličine ispod 2,5 μm. Ovakva podela je dala odnos koncentracija inhalatornih irespiratornih čestica po mernim mestima. Skenirajuća elektronska mikroskopija jepokazala ...
    mineral, četica, prašina, leteći pepeo, aerosediment, PM10, teški metali,koncentracija, veličina čestice, Kolubara
    ... J 1 0 M J2 _ 5 JL 1 0 J P R 1 0 D P R 1 0 JL P R 1 0 A V P R 1 0 S P R 1 0 F P R 1 0 O P R 1 0 N P R 1 0 JN P R 1 0 M JP R 1 0 A P R 1 0 A 1 0 M P R 1 0 A V 1 0 D 2 _ 5 N ...
    ... 600 800 1000 1200 F E B R U A R / D E C E M B A R N O V E M B A R JA N U A R /0 O K T O B A R S E P T E M B A A V G U S T J U L J U N A P R IL M A R T M A J F E B R U A R JA N U A R Sl. 77 . Klaster dijagram ...
    ... 300 400 500 600 O K T O B A R A V G U S T F E B R U A R / JA N U A R /0 S E P T E M B A J U L D E C E M B A R N O V E M B A R J U N F E B R U A R M A R T A P R IL M A J JA N U A R Sl. 78 . Klaster dijagram ...

  • Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta

    Vesna Cvetkov (2020)
    ... experimen- tal study. Archaeological Prospection 8: 211-225. Мужијевић, Р., Старчевић, М., Стојановић, Р. 1992. Примена геофизике у археологији. Археологија и природне науке (ур. Д. Срејовић), Београд: 115-123. Maher, B. A., Taylor, R. M. 1988. For- mation of ultrafine-grained magnetite in soils. Nature ...
    ... samim tim tačnije definisanje potencijalnih zona od interesa za arheo- 15 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 loška istraživanja i lociranje arheoloških objekata. Sam izbor metode ...
    ... izazivaju magnetne anomalije doprinelo je da magnetometrija postane značajan alat u arheologiji. Smatra se da su istra- 16 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 živači ...

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary

  • Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone

    Aleksandar Luković (2021)
    Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...
    magnetit, hematit, hemoilmenit, Borska metalogenetska zona, porfirska ležišta
    ... Kalenić, M., Hadži-Vuković, M., Dolić, D., Lončarević, Č., Rakić, M., (1973): Tumač za list Kučevo L 34-128. Osnovna geološka karta 1:100 000. Zavod za geološka i geofizička istraživanja. Beograd. Kamenov, B.K., Moritz, R., Nedialkov, R., Peytcheva, I., Von Quadt, A., Stoykov, S., Yanev, Y., Zartova ...
    ... Sredna Gora zone, Bulgaria. In: Piestrzynski A., (eds). Mineral deposits at the beginning of the 21st century. Balkema, Lisse, 539-542. Krstić, B., Rakić, B., Kalenić, M., Rajčević, D., Banković, V., Veselinović, M., (1970): Tumač za list Knjaževac, OGK SFRJ 1:100000. Savezni geološki zavod, Beograd ...
    ... 87-94. Jelenković, R., Milovanović, D. J., Koželj, D., & Banješević, M., (2016). The mineral resources of the Bor Metallogenic Zone: A review. Geologia Croatica, 69, 143-155. Kalenić, M., Đorđević, M., Krstić, B., Bogdanović, P., Milošaković, R., Divljan, M., Čičulić, M., Džodžo, R., Rudolf, Lj., Jovanović ...

  • The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments

    Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)
    The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...
    sediments, Tisza River, organic matter, biomarkers, oil pollutants
    ... )20(R)-sterane/Σ(C27–C29)14α(H)17α(H)20(R)-steranes; b100×C2814α(H)17α(H)20(R)- -sterane/Σ(C27–C29)14α(H)17α(H)20(R)-steranes; c% C29 = 100×C2914α(H)17α(H)20(R)-sterane/Σ(C27– –C29)14α(H)17α(H)20(R)-steranes; dC2914α(H)17α(H)20(S)-sterane/C2914α(H)17α(H)20(S+R)-steranes; eC2914β(H)17β(H)20(R)-ste ...
    ... from the distributions and abundances of steranes and diasteranes Sample % C27 a % C28 b % C29 c C29αα(S)/ C29αα(S+R)d C29ββ(R)/ C29(ββ(R)+αα(R))e C27βα(S)/ C27(βα(S)+αα(R))f M18 33.2 29.4 37.4 0.49 0.49 0.30 M21 27.4 32.8 39.8 0.48 0.46 0.31 M22 31.8 30.9 37.3 0.49 0.50 0.29 M25 29.3 32 ...
    ... Rijeka, Croatia, 2012, Ch. 1, p. 3 5. R. A. Bourbonniere, P. A. Meyers, Limnol. Oceanogr. 41 (1996) 352 6. A. Bechtel, R. F. Sachsenhofer, I. Kolcon, R. Gratzer, A. Otto, W. Püttmann, Int. J. Coal Geol. 51 (2002) 31 7. I. R. Kaplan, Y. Galperin, S. Lu, R. Lee, Org. Geochem. 27 (1997) 289 8. Z ...

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