Претрага
606 items
-
Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4
Lidija Radovanović, Željko Radovanović, Aleksandar Kremenović, Bojana Simović, Milica V. Vasić, Jelena Rogan (2022)In recent years, thermal decomposition studies of transition metal complexes with benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–gel treatment, thermolysis is faster, more efficient ...Lidija Radovanović, Željko Radovanović, Aleksandar Kremenović, Bojana Simović, Milica V. Vasić, Jelena Rogan. "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4 " in XIV Conference of chemists, technologists and environmentalists of Republic of Srpska, Academy of sciences and arts of the Republic of Srpska, Banja Luka, Republic of Srpska, B&H, October 21st-22nd, 2022, University in Banjaluka, Faculty of Technology (2022)
-
Polimorfne promene materije nastale mlevenjem minerala
Milan Petrov, Ljubiša Andrić, Milena Kostović, Vladimir Jovanović, Dragan Radulović, Dejan Todorović, Branislav Ivošević (2023)U radu su prikazani rezultati istraživanja iz oblasti usitnjavanja, sakupljani duži niz godina, u Institutu za tehnologiju nuklearnih i drugih mineralnih sirovina. Poznato je da se područja sa frekfencijama preko 3·1011 do 3·1014 Hz nalaze u elektromagnetnom spektru infracrvenog i daleko infracrvenog emitovanog ili apsorbovanog zračenja. U radu su prikazani rezultati kada se materijal i kugle u mlinu nalaze na jednoj od pomenutih frekfencija, što nam omogućava da pomoću Borovog uslova frekfencija pristupimo izračunavanju emitovanih i apsorbovanih molarnih energija ...Milan Petrov, Ljubiša Andrić, Milena Kostović, Vladimir Jovanović, Dragan Radulović, Dejan Todorović, Branislav Ivošević. "Polimorfne promene materije nastale mlevenjem minerala" in X Kolokvijum o pripremi mineralnih sirovina univerzitet u beogradu, Rudarsko-geološki fakultet, 08.12.2023., Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
-
Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...... (Fig. 2). It is very small and contributes little to kobsd. N Ru NN N Cl N NH N N O NH2 N O H HH HH OH OPO O O H2N CH C CH2 OH O N NH H2N C NH2 S H3C S CH3 O DMSOTuL-His 5'-GMP[Ru(trpy)(bpy)Cl]+ Fig. 1 The structures of complex and nucleophiles 1490 A. M. Mijatović ...
... chlorido complex was converted into the aqua analog [Ru(trpy)(bpy)H2O] 2? by addition of two equiva- lents of AgClO4, heating the mixture to 50–60 �C for 1 h and removing the formed precipitate AgCl by filtration through a 0.10-lm pore membrane filter. Great care was taken to ensure that the resulting ...
... of equilibria should be considered in the present study: (a) protonation of the ligand anion, (b) hydrolysis of the [Ru(trpy)(bpy)H2O] 2? ion, and (c) general three-component equilibria, which include the case q = 0, i.e., the formation of pure binary complexes of [Ru(trpy)(bpy)H2O] 2?. The overall ...Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
-
Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
-
Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation
The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...... slight (B), slight (C), moderate (D), severe (E), and very severe damage (F), damage indices-linear damage index DiLi, (1; Fitzner et al. 2002a) and progressive damage index Diyrog Were calculated (2; Fitzner et al. 2002b): B+(2·:C)+(3·D)+(4·E)+(5-F 0OO i G ) p — ( B+(4·C)+(9·D)+(16·E)+(25· ...
... and the northern facade are built by combining stone blocks and Fig. 1 a Location of the Dark Gate in Belgrade, Serbia; b South facade of the gate; c North facade of the gate @ Springer 6184 Table 1 Classification scheme of weathering forms and intensities for the built stone blocks in ...
... microfacies of built stone, five 6185 Environ Earth Sci (2015) 73:0181–6193 Fig. 2 Images and photomicrographs of stones built in the Dark Gate: (a-c) Grainstone; (d—e) Algal rudstone; (f-g) Rudstone structurally different samples were taken from the Monu- ment for petrographic study. Petrographic ...Maja Franković, Nevenka Novaković, Vesna Matović. "Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation" in Environmental Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s12665-014-3843-z
-
Callovian (Middle Jurassic) Sphriganaria (Brachiopoda) from the Jordan Valley (Middle East)
Howard R. Feldman, Barbara V. Radulović, Fayez Ahmad. "Callovian (Middle Jurassic) Sphriganaria (Brachiopoda) from the Jordan Valley (Middle East)" in Historical Biology (2023). https://doi.org/10.1080/08912963.2022.2122823
-
Application of the principle of circular economy to the thermal groundwater, the example of the municipality of Bogatić
There are about 360 locations of thermal and thermo-mineral waters in Serbia, whose water temperatures range from 14 to 98°C, which ranks Serbia as the richest European country in geothermal energy. The mentioned water resources (thermal and thermomineral waters) are used, mostly, for therapeutic purposes in spas and sports and recreational centers. The main problem that is present is the fact that they are not used in a rational and efficient way. The paper will give examples territorially related ...Marija Jovanović, Vesna Ristić Vakanjac. "Application of the principle of circular economy to the thermal groundwater, the example of the municipality of Bogatić" in Book of proceedings of the 3rd International Scientific Conference on vircular and bioeconomy CIBEK2021, Belgrade, Belgrade : School of Engineering Management (2021)
-
Proširivanje upita zasnovano na leksičkim resursima
U radu je opisano kako se leksički resursi za srpski jezik i softverski alati, razvijeni u okviru Grupe za jezičke tehnologije Univerziteta u Beogradu, mogu koristiti za unapređenje postavljanja upita. Rezultati pretrage mogu biti značajno unapređeni korišćenjem različitih leksičkih resursa, kakvi su morfološki rečnici i semantičke mreže. Izloženi pristup može se iskoristiti i u Sistemu naučnih, tehnoloških i poslovnih informacija, jer je efikasno pretraživanje ovog dragocenog resursa, imajući u vidu njegovu heterogenost i obim, kao i preovladavajući tekstualni sadržaj, ...... [4] Fellbaum C. (ed.) (1998) WordNet: An Electronic Lexical Database, The MIT Press. [5] Maurel D., Vitas D., Krstev S., Koeva S., (2007) „Prolex: a lexical model for translation of proper names. Application to French, Serbian and Bulgarian“, BULAG n°32, 2007. [6] Krstev C., Stanković R ...
... različitim namenama, pa samim tim otvaraju i mogućnosti njeogovog korišćenja u okviru SNTPI. LITERATURA [1] Vitas D., Pavlović-Lažetić G., Krstev C., Popović Lj., Obradović I. (2003): „Processing Serbian Written Texts: An Overview of Resources and Basic Tools“, Proc. of the International Workshop ...
... BalkaNet Project, Romanian Journal on Information Science and Technology, Bucureşti, Publishing house of the Romanian academy. [3] Vitas D., Krstev C. (2007), „Extending Serbian E dictionary by the Use of the Lexical Transducers“, Proc. of the 6th and 7th INTEX/Nooj Workshop, S. Koeva, D. Maurel ...Ranka Stanković, Ivan Obradović, Cvetana Krstev. "Proširivanje upita zasnovano na leksičkim resursima" in SNTPI 09 - Naučno-stručni skup Sistem naučnih, tehnoloških i poslovnih informacija, Beograd 19. i 20. jun 2009, Beograd : Fakultet informacionih tehnologija (2009)
-
The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... µP3(n)) (12) 2. Affiliation functions can form C = n3 combinations with each other. Each combination represents practically one possible assessment Mi. Mc = [µP1(j=1, . . . , n), µP1(j=1, . . . , n), µP1(j=1, . . . , n)], (13) for every c = 1 to C. 3. If only the values that satisfying the condition ...
... O, where O ≤ C). Each outcome has corresponding values (iv) and (v) that further identify it for the calculation. 4. In the following, for each combination c which satisfies the condition of outcome, the value of Jc is calculated and rounded as integer, as follows: Jc = (kP1i · j(µP1)c) + (kP2i · j(µP2)c) ...
... j(µP2)c) + (kP3i · j(µP3)c) (14) wherе: - ki is the influential factor of the corresponding partial indicator on the synthesis and obtained on the basis of mutual ranking of the partial indicators (step III), where: kP1i + kP2i + kP3i = 1; - jc is the class to which the corresponding fuzzy number ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
-
Human Hemoglobin and Antipsychotics Clozapine, Ziprasidone and Sertindole: Friends or Foes?
Lena Platanić Arizanović, Nikola Gligorijević, Ilija Cvijetić, Aleksandar Mijatović, Maja Krstić Ristivojević, Simeon Minić, Aleksandra Nikolić Kokić, Čedo Miljević, Milan Nikolić (2023)Packed with hemoglobin, an essential protein for oxygen transport, human erythrocytes are a suitable model system for testing the pleiotropic effects of lipophilic drugs. Our study investi gated the interaction between antipsychotic drugs clozapine, ziprasidone, sertindole, and human hemoglobin under simulated physiological conditions. Analysis of protein fluorescence quenching at different temperatures and data obtained from the van’t Hoff diagram and molecular docking indicate that the interactions are static and that the tetrameric human hemoglobin has one binding site for ...Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Computer Science Applications, Spectroscopy, Molecular Biology, General Medicine, CatalysisLena Platanić Arizanović, Nikola Gligorijević, Ilija Cvijetić, Aleksandar Mijatović, Maja Krstić Ristivojević, Simeon Minić, Aleksandra Nikolić Kokić, Čedo Miljević, Milan Nikolić. "Human Hemoglobin and Antipsychotics Clozapine, Ziprasidone and Sertindole: Friends or Foes?" in International Journal of Molecular Sciences, MDPI AG (2023). https://doi.org/10.3390/ijms24108921
-
A contribution to the understanding of hydrochemical properties of thermomineral water on the L’dži locality (eastern part of North Macedonia)
Hristina Petrova, Katarzyna Wątor, Piotr Rusiniak, Boris Vakanjac, Vesna Ristić Vakanjac, Ewa Kmiecik (2023)Regarding the aspect of mineral, thermo-mineral, and thermal waters, on the territory of the Republic of North Macedonia, there are 65 registered locations, of which 8 are categorized as spas. This includes the Kežovica spa, also known as the Štipska spa. In the vicinity of Kežovica Spa is the thermo-mineral L’Dži spring with mineralization around 1.3 g/L and the water temperature at the time of sampling was 50.1 °C. Spring L’Dži is generated by a fault structure and is ...Hristina Petrova, Katarzyna Wątor, Piotr Rusiniak, Boris Vakanjac, Vesna Ristić Vakanjac, Ewa Kmiecik. "A contribution to the understanding of hydrochemical properties of thermomineral water on the L’dži locality (eastern part of North Macedonia)" in National Conference with International Participation “GEOSCIENCES 2023”, Review of the Bulgarian Geological Society, Sofia : Bulgarian Geological Society (2023)
-
Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders
Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)... Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia 2 Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10000 Zagreb, Croatia JUniversity of Belgrade, Faculty of Pharmacy, Department of Bromatology, Belgrade, Serbia “Department of Mineralogy ...
... room temperature, during which a successful reaction between metal nitrate and sodium hydroxide occurred. Prepared powders were calcinated at 700 "C for 2 h. The diffraction pattern was recorded at room temperature and atmospheric pressure without of any re-heating of the sample. The Rietveld method ...Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić. "Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders" in Programme ; and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia , Beograd : Institut za multidisciplinarna istraživanja, (2023)
-
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 ...... carried out at 37"C. IR studies Pepsin-AP*' and haemoglobin-AP? | samples were lyophilized and used for the further experiments. "The removal of any traces of water from the samples was insured by drying samples over silica gel over night and heating during 2 hours at 100%C. For infrared ...
... IR spectra of both proteins in KBr matrices recorded at room temperature (25"C). Polyacrylamide gel electrobhoresis (PAGE) Native electrophoresis of pepsin and haemoglobin on 10% polyacrylamide gel carried out at 4'C during 90 min, according to the Laemmli procedure, at pH 8.3 [28]. Wiater ...
... in 0.0,M HCI, pH 2), 5mL haemoglobin solution (2% solution of haemoglobin in 0.01M HC!I). The working solutions were incubated for 10min at 37"C. The reaction was stopped by addition of 10 mL 5% TCA. The absorbance of clear filtrates' recorded at 28Onm, and activities were calculated by the ...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
-
Arhitektonsko-građevinski kamen Crne Gore, stanje i potencijali
Darko Božović, Vladimir Simić (2023)Darko Božović, Vladimir Simić. "Arhitektonsko-građevinski kamen Crne Gore, stanje i potencijali" in Geološki glasnik (2023)
-
Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije
Branko R. Miladinović (2016-04-27)Ugalj predstavlja energent na čijoj osnovi se razvija privreda celog sveta.Zato mu se pridaje velika pažnja u eksploataciji i preradi, bez obzira na mnogeštetne uticaje na životnu sredinu, a posebno na efekat staklene bašte koji sestvara emisijom zagađujućih materija u atmosferu radom termoelektrana naugalj.U Srbiji, resurs koji se danas u najvećoj meri koristi u proizvodnjielektrične energije je ugalj i on učestvuje u proseku sa 70 %. U strukturi ukupneproizvodnje ugljeva, dominiraju lignitski ugljevi sa učešćem od 98 %, a ...Srbija, kameni i mrki ugalj, podzemna eksploatacija, preradauglja, rudničke vode, hemijski sastav, emisija zagađujućih materija, životnasredina... e o rp a A Y Y H e c e M O jy A O K T O P C K YA ~ C e p T a L \~ jy n O A H a c n O B O M : X ~ A P o re o e K o n o w K ~ y c n o B ~ e K c n n o a T a 4 ~ ie K a M e H ~ x ~ M P K ~ X y rJ b e B a C p 6 ~ ie x o ja je M o je ayropcxo A e n o . }J .~ c e p T a L \~ jy c a C B ~ M n p ~ n o 3 ~ ...
... M e n p e r a a C T Y A l I 1 j C K I I 1 M n p o r p a u a r a a n p y r u x B I I 1 C O K O W K O n C K I I 1 XY C T a H O B a , • n a c y p e 3 y n T a T I I 1 K o p e K T H O H a B e A e H I I 1 1 1 1 • n a H I I 1 C a M K p W l I 1 0 / n a ayropcxa n p a s a 1 1 1K O P l l 1 C T I I 1 0 I I 1 ...
... p e n o e C a A P > K a H e Y onafipaaora rn n y n u u e u u e K p e a rn s a e 3 a je A H ~ L \e (C re a t iv e C o m m o n s ) a a x o jy c a M c e o A n Y 4 ~ o /n a . 1 . A Y T O P C T B O 2 . A Y T O P C T B O - H e K oM e p L \~ ja n H o @ Y T O P C T B O - H e K O M e p L \~ ja n H o - 6 e ...Branko R. Miladinović. "Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-04-27)
-
Keyword-Based Search on Bilingual Digital Libraries
This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović. "Keyword-Based Search on Bilingual Digital Libraries" in Semantic Keyword-Based Search on Structured Data Sources - Second COST Action IC1302 International KEYSTONE Conference, IKC 2016, Springer (2017). https://doi.org/10.1007/978-3-319-53640-8_10
-
Knowledge and Rule-Based Diacritic Restoration in Serbian
In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).... linguistic ontology on natural sciences and technology. In Proceedings of Linguistic Resources and Evaluation Conference, pages 1077–1082. Fellbaum, C., Ed. (1998). WordNet: An Electronic Lexical Database. Cambridge, MA: MIT Press. Gelfenbeyn, I., Goncharuk, A., Lehelt, V., Lipatov, A., and Shilo, V ...
... principles for the design of ontologies used for knowledge sharing? International journal of human-computer studies, 43(5-6):907–928. Guarino, N. and Welty, C. A. (2009). An overview of ontoclean. In Handbook on ontologies, pages 201–220. Springer. Guarino, N., Oberle, D., and Staab, S. (2009). What is an ontology ...
... 138–153. Springer. Koeva, S. (2010). Bulgarian wordnet–current state, applications and prospects. Bulgarian-American Dialogues, pages 120–132. Kunze, C. and Lemnitzer, L. (2010). Lexical-semantic and conceptual relations in germanet. Lexical-semantic relations: Theoretical and practical perspectives, ...Cvetana Krstev, Ranka Stanković, Duško Vitas. "Knowledge and Rule-Based Diacritic Restoration in Serbian" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018): 41-51
-
Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research
магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија... of the fi eld measured by the third method is shown in Figure 3.c. As in the previous mea- surement methods, there was no occurrence of linear anomalies along the direction of the acqui- sition. Comparing Figure 3.b. with Figure 3.c, it can be determined that the data quality does not de- pend on ...
... interval. The time intervals for automatic sampling in Fig. 1 Illustration of N-S orientation of traverses. Key: a. zigzag fashion; b. parallel fashion; c. mid-fi eld in parallel fashion. Fig. 2 Illustration of E-W orientation of traverses. Key as for Fig 1. 95 Archaeology and Science 10 (2014)Petković ...
... after the completion of measuring the traverse, circled around test polygon to the op- posite side relative to the second measuring mode (Figure 1.c.). In all three modes, the measurement was start- ed from the same point, the south-west corner of test polygon. Figure 1 After the completion of ...Mirko Petković, Vesna Cvetkov, Branislav Sretenović. "Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research" in Arheologija i prirodne nauke (2014)
-
A new polymorph of Ba(AsO3OH): Synthesis, crystal structure and vibrational spectra
Tamara Đorđević, Ljiljana Karanović (2010)A new monoclinic polymorph of Ba(AsO3OH) was synthesized under hydrothermal conditions. It represents a previously unknown structure type. Its crystal structure was determined from a racemic twin using single-crystal X-ray diffraction data collected at 120 and 293 K [space group P21, a=7.2149(14)/7.2370(2), b=7.7028(15)/7.7133(2), c=21.7385(43)/21.8079(5) Å, β=95.95(3)/96.073(1)1, V=1201.6(4)/1210.51(5) Å3, Z=12]. The crystal structure of P21-Ba(AsO3OH) has a layered character and is built up of four types of regularly alternating layers parallel to (0 0 1). Every AsO3OH tetrahedron is chelating to two Ba atoms and ...Ba(AsO3OH), хидротермална синтеза, структурна анализа монокристала, Раманска спектроскопија, инфрацрвена спектроскопија, водоничне везе, хидрогенарсенати земноалкалних металаTamara Đorđević, Ljiljana Karanović. "A new polymorph of Ba(AsO3OH): Synthesis, crystal structure and vibrational spectra" in Journal of Solid State Chemistry, Elsevier BV (2010). https://doi.org/10.1016/j.jssc.2010.09.027
-
Unusually sluggish microemulsion system with water, toluene and a technical branched alkyl polyethoxylate
Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Snežana Zlatanović, Zoran Marković, Aleksandar Cvjetić (2015)Microemulsion systems with water, toluene and nonionic surfactants are interesting for application due to the excellent solvent properties of aromatic hydrocarbons. In this study, the pseudo-binary phase diagram (“fish-diagram”) of such a ternary system was investigated using a branched technical alkyl polyethoxylate. Lutensol ON 50 (i-C10E5) was considered a suitable surfactant. The system with technical branched i-C10E5 exhibits very long, and for compositions near optimum solubilization, i.e., the minimum content of surfactant needed for a bicontinuous microemulsion, extremely long ...микроемулзија, толуен, оксоалкохол етоксилат, термодинамичка стабилност, тернарни фазни дијаграми, дијаграми „fish“Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Snežana Zlatanović, Zoran Marković, Aleksandar Cvjetić. "Unusually sluggish microemulsion system with water, toluene and a technical branched alkyl polyethoxylate" in Chemical Industry and Chemical Engineering Quarterly (2015). https://doi.org/10.2298/CICEQ141012045I