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Упит dcterms_creator_txt:James C. Hower

399 items

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology
    ... thank all participants for their involvement in all of the activities of the Self-heating Working Group. Very special acknowledgements go to Dr. James C. Hower from University of Kentucky; Center for Applied Energy Research for his Table 5 Levels of agreement for individual participants in 2015 (in %) ...
    ... Coal Basin in Poland. Springer International Publishing, Switzerland pp. 213. Engle, M.A., Radke, L.F., Heffern, E.L., O’Keef, J.M.K., Hower, J.C., Smeltzer, C., Hower, J.M., Olea, R.A., Eatwell, R.J., Blake, D.R., Emsbo-Mattingly, S.D., Stout, S.A., Queen, G., Aggen, K.L., Kolker, A., Prakash, A., Henke ...
    ... Coal and Peat Fires: A Global Perspective, Volume 3 – Case Studies. Elsevier, pp. 431–474. Misz-Kennan, M., Kus, J., Flores, D., Avila, C., Christanis, K., Hower, J., Kalaitzidis, S., O’Keefe, J., Marques, M., Pusz, S., Ribeiro, J., Suárez-Ruiz, I., Sýkorová, I., Wagner, N., Životić, D., 2009. Report ...

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)
    ... Peshevski, James Reeves, Irena Georgievska Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example | Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena ...
    ... Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, and Irena Georgievska Abstract This paper is representing a successful application and comparison of heuristic and deterministic landslide ...
    ... T, and contributing upslope area a. The latter, sta- bility model, is described by topographic slope angle h, material bulk density c, dimensionless cohesion Csoil (c/ch) and friction angle u. A simple formula (Eq. 1) summarizes the balance of all encountered resisting and driving forces, i.e. available ...

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science

  • Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach

    Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)
    Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...
    pyrazoloquinolinones, nanocrystals, wet media milling, fasted/fed bioavailability

  • 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

  • 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

  • Named Entity Recognition for Distant Reading in ELTeC

    Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)
    Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи
    ... equation Reff,C c (l, L) − R3D c Reff,C c (l, L) = Reff,C c (l, L) − RC c (l ) Reff,C c (l, L) + RC c (l ) − R3D c RC c (l ) RC c (l ) Reff,C c (l, L) , (A2) which for L = l becomes Reff,C c (l, l ) − R3D c Reff,C c (l, l ) = Reff,C c (l, l ) − RC c (l ) Reff,C c (l, l ) + RC c (l ) − R3D ...
    ... RFIM, so Reff,C c (l, l ) − R3D c Reff,C c (l, l ) = A′ l1/ν3D , (A4) where the amplitude A′ characterizes the approach in the CCC case. Next, our numerical data for l > 8 suggest for the first term on the right-hand side of (A3) that Reff,C c (l, L) − RC c (l ) Reff,C c (l, L) = A′(l ) ...
    ... one has to distinguish between H eff,O c (l, L) and H eff,C c (l, L), i.e., between the effective critical field in the CCO and CCC cases, and analogously between their ther- modynamic limits HO c (l ) = limL→∞ H eff,O c (l, L) and HC c (l ) = limL→∞ H eff,C c (l, L), which, unlike the critical disorders ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija

  • Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine

    Lazar M. Kaluđerović (2018-01-17)
    fikasnost prilikom sorpcije S-metolahlora i klomazona od strane neorganskih iorganski modifikovanih montmorionita sa lokaliteta Bogovina odreĎena je metodombach adsorpcije. Uzorci montmorionita su tretirani prvo rastvorom NaCl a zatim irazličitim koncentracijama organskih kompleksa. Adsorpcione izoterme su dobijenetretiranjem uzoraka različitim koncentracijama herbicida. Detaljna mineraloškakarakterizacija uzoraka uraĎena je metodom rendgenske difrakcije. Rezultati interakcijemontmorionita sa organskim kompleksima i herbicidima dobijeni su primenomrendgenskih, optičkih, termičkih i spektroskopskih metoda.Na osnovu rezultata rendgenskih ispitivanja uzoraka, utvrĎeno je prisustvoorganskih kompleksa i herbicida u meĎuslojnom prostoru montmorionita.Montmorioniti modifikovani ...
    adsorpcija, montmorionit, heksadeciltrimetilamonijum bromid,feniltrimetilamonijum hlorid, S-metolahlor, klomazon

  • 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

  • The number of unimodular roots of some reciprocal polynomials

    Dragan Stankov (2020)
    We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials
    ... =1,2,...,p. If there are s such ¢; then limy—.. C(P2n) is approximately equal to > 12 2m lim C(Pon)=— ). foli—) noo pd p where we chosed ¢ ; = 2 j7/p. C. R. Mathématique, 2020, 358, n° 2, 159-168 164 Dragan Stankov 3.1. Small limit points of C (P2n) In the case of trinomials i.e. if k = 0, |a0| ...
    ... ≤ 1 in modulus we determine the exact value of limn→∞C (Sl ). Table 1. Among all monic reciprocal polynomials P2n ∈ Z(x), composed of l monomials, Sl (x) has the smallest limn→∞C (P2n). l Polynomial Sl (x) limn→∞C (Sl ) Exact value of limn→∞C (Sl ) 5 x2n +xn+1 +xn +xn−1 +1 1/3 1/3 6 x2n +xn+3 +xn+1 ...
    ... < 1 in modulus we determine the exact value of lim;—o5 C(S)). Table 1. Among all monic reciprocal polynomials P2, € Z(x), composed of / monomials, S;(x) has the smallest limyj—oo C(P2n). l Polynomial S;(x) limy—oo C(S7) | Exact value of limp. C(S)) 5 eM g Mtl yy yy Ml yy] 1/3 1/3 3/ v5, 23 41 6 x24 ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction

  • Efficiency and lifetime of medium voltage transformers

    Snežana Aleksandrović, Vesna Damnjanović (2017)
    ... definišu se: = srednja dnevna ambijentalna temperatura do 30%C, = srednja godišnja temperatura do 20%C, = maksimalna temperatura do 409%C i = minimalna tempceratura do —25%C. Maksimalno dozvoljeno zagrevanje namotaja ograničeno je na 65"C, mereno na principu promene clektrične otpornosti. Maksimalna ...
    ... izolacije transformatora Temperatura 55% 65% Temperatura ambijenta 30% 30% Srednji temperatuni 55%C 65% porast Nadtemperatura 10"%C 15%C najtoplije tačke Srednja temperatura 95%C 110%C najtoplije tačke Najtoplija tačka transformatora određuje se kao suma prosečne nadtemperature bakra ...
    ... suma ambijentalne temperature i najvećeg dozvoljenog zagrevanja namotaja i iznosi 105%C. Nadtemperatura najtoplije tačke transformatora iznosi 78"C. Za prosečnu srednju godišnju temperaturu ambijenta od 20%C, prema našim standardima, temperatura najtoplije tačke transformatora iznosi 989C. ...

  • Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike
    ... ) 0 .8 5 4 (1 5 ) 0 .9 9 (1 ) 1 N e g le c ti n g th e c o n tr ib u ti o n fr o m th e C u 1 a n d C u 2 a n d p re s e n c e o f v a c a n c ie s a t M e 2 s it e ; 2 In c lu d in g th e c o n tr ib u ti o n fr o m B i o n ly ; 3 In c lu d in g th e c o n tr ib u ti o n fr o m P b o n ly . FIG ...
    ... fu F O R C O S A L IT E S A N D IS O S T R U C T U R A L C O M P O U N D S S a m p le L o c a lit y R e f C h e m ic a l c o m p o s it io n c a lc u la te d o n th e b a s is o f 2 0 s u lf u r a to m s (Z ¼ 2 ) a (Å ) b (Å ) c (Å ) V o lu m e (Å 3 ) 1 T re p č a I C u .1 5 A ...
    ... n a b c , P n m a s p a c e g ro u p ; 2 o ri e n ta ti o n c a b , P b n m s p a c e g ro u p ; 3 o ri e n ta ti o n a – c b , P n a m s p a c e g ro u p ; I T h is w o rk ; II T o p a & M a k o v ic k y (2 0 1 0 ); II I W e it z & H e lln e r (1 9 6 0 ); IV S ri k ri s h n a n & N o w a c k i( ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika
    ... In de x, CP I ( C 1 5– C 3 5) = ½ x [Σ od d( n-C 15 -n- C 3 5)/ Σ ev en (n- C 1 4-n -C 34 ) + Σ od d( n- C 1 5-n -C 35 )/Σ ev en (n- C 1 6-n -C 36 )]; Pr /P h = Pr ist an e/ Ph yta ne ; % C 2 7 α α α (R ) – C 2 7/( C 2 7 + C 2 8 + C 2 9) of 5α (H )1 ...
    ... I (C 15 – C 3 5) Pr / Ph Pr /n - C 1 7 Ph /n - C 1 8 Σ n-a lk- 1-e ne s/ Σ n-a lka ne s %C 27 α α α (R ) %C 28 α α α (R ) %C 29 α α α (R ) C 2 9 α α α 20 S/ (2 0S + 20 R) Σ C 2 7-C 29 β α α (R )/ Σ C 2 7-C 29 α α α (R ) C 2 9α ...
    ... ne s; %C 28 α α α (R ) – C 2 8/( C 2 7 + C 2 8 + C 2 9) of 5α (H )1 4α (H )1 7α (H )2 0R -st era ne s; %C 29 α α α (R ) – C 2 9/( C 2 7 + C 2 8 + C 2 9) of 5α (H )1 4α (H )1 7α (H )2 0R -st era ne s; C 2 9α α α 20 S/ (2 0S + 20 R) = C 2 9 5α ...

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology
    ... 4-substitution pattern was concluded from long-range correlations from the isopropyl methine proton to C-12, C-13 and C-14, and from the benzylic methylene protons H-7 and H-20 to C-8, C-9, C-14, and C-8, C-9, C-11 respectively. The remain- ing carbon framework could be constructed from the HMBC and COSY spectra ...
    ... into five subclasses, based on the presence or absence of oxygenation at the C-3, C-11, C-14 and C- 19 positions. The simplest subclass of icetexanes is the pisiferins, which are oxygenated at C-12, but not at C-3, C-11, C-14 and C- 19. The parent compound, pisiferin, was isolated from Chamaecy- paris pisifera ...
    ... ZB-5 column (30 m � 0.25 mm i.d., film thickness 0.10 mm) was used. The injection temperature was 70 �C (2 min hold). The temperature program was: 30 �C/min from 70 to 100 �C and 4 �C/min from 100 to 308 �C (held 8 min). Argon was used as collision gas for MS-MS experiments. For M+ daughter scans and multiple ...

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation
    ... the Romanian Academy, Bucures�ti. Utvi�c, M. (2011), “Annotating the corpus of contemporary Serbian”, INFOtheca - Journal of Informatics & Librarianship, Vol. 12 No. 2, pp. 36a-47a. Vitas, D., Krstev, C., Obradovi�c, I., Popovi�c, L. and Pavlovi�c-Lažeti�c, G. (2003), “Processing Serbian written ...
    ... the 1st Balkan Conference in Informatics (BCI ‘03),Thessaloniki, Greece, Vol. 21, pp. 97-104. Vitas, D., Popovi�c, L., Krstev, C., Obradovi�c, I., Pavlovi�c-Lažeti�c, G. and Stanojevi�c, M. (2012), “The Serbian language in the digital age – Cpgcrb jepbr y lbubnakyj lj,a”, in Rehm, G. and Uszkoreit ...
    ... Google Patents. Stankovi�c, R. (2009), “Modeli Ekspanzije Upita Nad Tekstuelnim Resursima (Models of Query Expansion on Textual Resources)”, PhD dissertation, University of Belgrade, Faculty of Mathematics, Belgrade (in Serbian). Stankovi�c, R., Krstev, C., Obradovi�c, I., Lazi�c, B. and Trtovac, A. (2016) ...