SEMI-FLEXIBLE COMPACT POLYMERS IN A DISORDERED ENVIRONMENT

Authors

  • Dušanka Lekić University of Banja Luka, Faculty of Natural Sciences, Mladena Stojanovića 2, Banja Luka, Republic of Srpska
  • Sunčica Elezović-Hadžić University of Belgrade, Faculty of Physics, Studentski trg 12, Belgrade, Serbia
  • Nataša Adžić Department of Theoretical Physics, J. Štefan Institute, Jamova cesta 39, Ljubljana, Slovenia

DOI:

https://doi.org/10.7251/cm.v2i7.4236

Abstract

Hamiltonian cycles with bending rigidity are studied on the first three members of the fractal family obtained by generalization of the modified rectangular (MR) fractal lattice. This model is proposed to describe conformational and thermodynamic properties of a single semi-flexible ring polymer confined in a poor and disordered (e.g. crowded) solvent. Due to the competition between temperature and polymer stiffness, there is a possibility for the phase transition between molten globule and crystal phase of a polymer to occur. The partition function of the model in the thermodynamic limit is obtained and analyzed as a function of polymer stiffness parameter s (Boltzmann weight), which for semi-flexible polymers can take on values over the interval (0,1). Other quantities, such as persistence length, specific heat and entropy, are obtained numerically and presented graphically as functions of stiffness parameter s.

References

Google. Search. Geothermal energy in the world.

www.egec.org.

www.iea.org.

www.izvorienergije.com.

S. Čičić, N, Miošić, Geothermal energy in Bosnia and Herzegovina [In Serbian: Geotermalna energija Bosne i Hercegovine] Geoinženjering, Sarajevo 1986.

S. Čičić, Geological composition and tectonics of Bosnia and Herzegovina [In Serbian: Geološki sastav i tektonika Bosne i Hercegovine], Earth Science Institute, Sarajevo 2002, 1−350.

Group of authors, Mineral rawmaterials of the Republic of Srpska [In Serbian:Mineralne sirovine Republike Srpske], Republički geološki zavod Republike Srpske, Zvornik 2011, 439−453.

J. Josipović, Mineral, thermal and ther-momineral waters in BiH [In Serbian: Mineralne, termalne i termomineralne vode u BiH], Geološki glasnik, Vol. 15 (1971) 233−77.

N. Djurić, L. Jovanović, Perspectives of use of geothermal energy in the Republic of Srpska, Bosnia and Herzegovina [In Serbian: Perspektive korištenja geotermalne energije u Republici Srpskoj, Bosna i Hercegovina], Conference Proceedings of 100 Years of Hydrogeology in Yugoslavia, Belgrade 1997.

M. Milivojević, et al., Projection and Development of Economic Potentials of Spas, Tourism and Hospitality Industry of the Republic of Srpska [In Serbian: Projekcija i razvoj privrednih potencijala banja, turizma i ugostiteljstva Republike Srpske], Conference Proceedings of the Scientific Conference, Dvo-rovi, Bijeljina 1996.

N. Djurić, N. Nikolić, Geothermal energy of Semberija and the Possibilities of its Valuation. [In Serbian: Geotermalna energija Semberije i njene mogućnosti valorizacije], Conference proceedings of the Mining-Geological Problematic in the Republic of Srpska, Prijedor 1984.

N. Djurić, Possibility of using geothermal energy in Semberija for the needs of district heating of Bijeljina City [In Serbian: Mogućnost iskorištavanja geotermalne energije u Semberiji za potrebe toplifikacije grada Bijeljine], FSD of Bijeljina Municipality 1997.

N. Djurić, Geothermal Energy New Energetic Reality in the Area of Semberija, Republic of Srpska – Bosnia and Herzegovina, 10th International Mine Water Association Congress, Poster session 1. Karlovy Vary, Czech Republic 2008.

N. S. Boganik, O roli radiogenogo tepla v formirovanii Geothermalh polej. Geotermičeskie isledovaniai ispolzovanie tepla Zemlji. Nauka, Moskva 1966, (In Russian).

M. Milivojević, Perić, Geothermal potential of Macva, Semberija and Srem [In Serbian: Geotermalna potencijalnost Mačve, Semberije i Srema] XI Congress of Geologists of Yugoslavia, Volume 5, SGD-SITGMSJ, Belgrade 1986.

M. Milivojević, J. Perić, Preliminary evaluation of energy potential of hydrogeothermal resources in Mesozoic bedrock of tertiary sediments in the area of Semberija for its use for district heating of Bijeljina [In Serbian: Preliminarna ocena energetske potencijalnosti hidrogeotermalnih resursa u mezozojskoj podlozi tercijarnih sedimenata na području Semberije radi njenog korišćenja za toplifikaciju Bijeljine], Faculty of Mining and Geology, Belgrade 1986.

J. Plavkić, J. Stanković, Interpreter of the Basic Hydrogeological Map of SFRY, Bijeljina Sheet 1:100000 [In Serbian: Tumač osnovne hidrogeološke karte SFRJ, list Bijeljina 1:100000.] Fund of professional documents of Federal Geological Institute, Belgrade 1990, 84.

T. Dragašević, B. Andrić, P. Joksović, The Structural map of Mohorovicic Discontinuity

:500.000 [In Serbian: Strukturna karta Mohorovičićevog diskontinuiteta 1:500.000] SGZ, Beograd 1989.

V. Žitko, M. Starčević, Results of tran-sformation of anomalic gravitational field in the area of Srem [In Serbian: Rezultati transformisanja anomalijskog gravitacionog polja na području Srema], Conference proceedings of the scientific oil board JAZU, Zagreb 1979.

K. Jelić, Heat flow and Mohorovicic Discontinuity on the Profile Susac – Vapovo [In Serbian: Toplinski tok i Mohorovičičev diskontinuitet na profilu Sušac – Vapovo] Conference – Results of Previous Geophysical Explorations of Different Phenomena Related to the Studying of the Earth’s Crust and the Upper Mantle in the Territory of Yugoslavia, Zagreb 1982.

N. Đurić, Energy potential of geothermal resources and possibilities of its use for district heating of Bijeljina City[In Serbian: Energetska potencijalnost geotermalnih resursa i mogućnost njihovog korištenja za toplifikaciju grada Bijeljine], Archive for Technical Sciences, Vol. 6 (2011) 1−9.

N. Đurić, S. Radovanović, Pre-Study of Economic Feasibility of Exploration and Exploitation of Geothermal Waters in the Territory of Bijeljina City [In Serbian: Predstudija ekonomske opravdanosti istraživanja i eksploatacije geotermalnih voda na teritoriji grada Bijeljine], FSD Technical Institute, Bijeljina 2009.

N. Đurić, M. Martinović, S. Radovano-vić, Possibility of using geothermal energy for the needs of industrial zones I, II and III in Bijeljina [Mogućnost korištenja geotermalne energije za potrebe industrijskih zona I, II i III u Bijeljini], II Symposium with international participation „Mining 2011“ Situation and Perspectives in Mining and Sustainable Development, Vrnjačka banja 2011, 431−437.

V. V. Đuričković, V. A. Đuričković, Optimal Parameters of Geothermal District Heating System of Bijeljina [In Serbian: Optimalni parametri geotermalnog toplifikacionog sistema Bijeljine] Archive for Technical Sciences, Vol. 2 (2010) 16−23.

P. K. Sharma, G. N. Tiwari, V. P. Sarayan, Parametric studies of a greenhouse for summer conditions. Energy, Vol. 23−9 (1998) 733−740.

G. N. Tiwari, P. K. Sharma, R. K. Goyal, R.F. Sutar, Estimation of a greenhouse: anumerical and experimental study. Energy and Buildings. Vol. 28−3 (1988) 241−250.

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Published

2017-12-29