NCS2012 > Proceedings 

NCS2012: Proceedings

Bulgarian Chemical Communications, Volume 45, Number 4, 2013

 Contents

 PREFACE      409

V. Krastev, G. K. Exner, 100 years of X-ray diffraction: from Röntgen’s discovery to top-of-the-art synchrotron source applications. 411.

R. Nikolova, V. Kostov-Kytin, Crystal chemistry of “glaserite” type compounds. 418

M. Markova-Velichkova, S. Veleva, V. Tumbalev, L. Stoyanov, D. Nihtianova, M. Mladenov, R. Raicheff, D. Kovacheva, XRD and TEM characterization of the morphology of ZnO powders prepared by different methods. 427

K. V. Koleva, N. I. Velinov, T. S. Tsoncheva, I. G. Mitov, B. N. Kunev, Preparation, structure and catalytic properties of ZnFe2О4. 434

H. I. Sbirkova, G. A. Radoslavov, P. I. Hristov, B. L. Shivachev, Crystallographic conditions of the heterologically expressed recombinant metal-binding protein Ts-PCHTP. 440

K. Kossev, H. Sbirkova, N. Petrova, B. Shivachev, R. Nikolova, Crystal structure and properties of urea and thiourea adducts of tetraalkyl ammonium hydrogen sulphate. 446

V. G. Petrov, S. D. Terzieva, Tz. I. Lazarova, V. Mikli, L. A. Andreeva, A. K. Stoyanova-Ivanova, Corrosive changes and chemical composition of the orthodontic archwires’ surface during treatment. 455

B. Shivachev, DHA, a program for calculating hydrogen atom coordinates of solvent atom involved in hydrogen bonding interactions. 461

L. T. Dimowa, S. L. Petrov, B. L. Shivachev, Natural and Zn exchanged clinoptilolite: in situ high temperature XRD study of structural behavior and cation positions. 466

M. Kuneva, Surface phase detection of proton-exchanged layers in LiNbO3 and LiTaO3 by IR reflection spectroscopy. 474

L. Dimowa, B. Shivachev, S. Petrov, Design and application of a cost effective high temperature holder for in-situ powder X-ray diffraction experiments. 479

R. S. Iordanova, A. D. Bachvarova-Nedelcheva, R. D. Gegova, Y. B. Dimitriev, Synthesis and characterization of TeO2/TiO2 powders obtained through Te (Vi) acid. 485

I. Piroeva, L. Dimowa, S. Atanasova-Vladimirova, N. Petrova, B. L. Shivachev, Synthesis, structural and optical characterization of TeO2–GeO2–Nd2O3 glasses. 491

A. M. Stoyanova, H. Y. Hitkova, N. K. Ivanova, A. D. Bachvarova-Nedelcheva, R. S. Iordanova, M. P. Sredkova, Photocatalytic and antibacterial activity of Fe-doped TiO2 nanoparticles prepared by nonhydrolytic sol-gel method. 497

L. Dimowa, K. Kossev, H. I. Sbirkova, R. P. Nikolova, B. L. Shivachev, Synthesis and crystal structure of oxonium 2,4,8,10-tetra-hydroxy-1,3,5,7,9,11-hexaoxa-2,4,6,8,10-penta-boraspiro[5.5] undecan-6-uide hydrate. 505

I. Piroeva, S. Atanassova-Vladimirova, L. Dimowa, H. Sbirkova, G. Radoslavov, P. Hristov, B. L. Shivachev, A simple and rapid scanning electron microscope preparative technique for observation of biological samples: application on bacteria and DNA samples. 510

L. Yotova, S. Yaneva, Silica-based hybrid materials as biocompatible coatings for xenobiotics sensors. 516

L. Tsvetanova, L. Dimowa, S. Ferdov, R. Nikolova, Crystal structures of Cs+, Mg2+, Ba2+ ion exchanged ETS-4 at RT and 150 K. 522

D. Marinkova, L. Yotova, D. Danalev, D. Stoykov, J.-M. Ringeard, M. Michiel, S. Serfaty, P. Griesmar, Investigation of newly synthesized biocompatible materials as biofilm carriers. 530

G. I. Patronov, I. P. Kostova, D. T. Tonchev, Study of zinc borophosphate compositions doped with samarium and manganese. 536

K. Kossev, L. Tsvetanova, L. Dimowa, R. Nikolova, B. Shivachev, Synthesis and crystal structure of magnesium chlorate dihydrate and magnesium chlorate hexahydrate. 543

L. V. Nikolova, Microstructure and texture analyses on spring steel. 549

A. Zaidan, Vl. Ivanova, P. Petkov, Ab initio simulation of crystallization of amorphous Ge–Te–In system. 554

S. Uzova, A. Popov, V. Velev, T. Angelov, S. Mihaleva, Ch. Uzov, Polycaprolactam crystal structure. I. Gamma–alpha polymorphic transition. 560

G. E. Chernev, E. V. Todorova, S. P. Djambazov, I. M. Miranda Salvado, Structure of hybrid materials containing natural and synthetic organic compounds. 568

S. Uzova, A. Popov, V. Velev, T. Angelov, S. Mihaleva, Ch. Uzov, Polycaprolactam crystal structure. II. Crystal phase perfection. 575

H. Kolev, G. Tyuliev, C. Christov, K. L. Kostov, Experimental study of the surface chemical composition of sea salt crystallized during evaporation of seawater under natural conditions. 584

E. K. Salamanova, D. T. Tsoneva, A. D. Karshikoff, Physical bases of thermal stability of proteins: A comparative study on homologous pairs from mesophilic and thermophilic organisms. 592

B. V. Kostova, N. L. Petrova, V. Petkova, The high energy milling effect on positional redistribution of CO3- ions in the structure of sedimentary apatite. 601

P. Petkova, V. Nedkov, J. Tacheva, P. Vasilev, I. Dimitrov, The structural distortion and Zeeman splitting of the complexes CrCl2(H2O)4 2+ and Cr(H2O)6 2+. 607

N. V. Kaneva, S. A. Siuleiman, A. S. Bojinova, K. I. Papazova, D. T. Dimitrov, I. Gracheva, S. Karpova, V. A. Moshnikov, Nanosized composite thin films of SiO2-ZnO for photocatalytic decomposition of organic dyes – structure and characterization. 611

M. V. Gabrovska, R. M. Edreva-Kardjieva, D. D. Crişan, K. K. Tenchev, D. A. Nikolova, M. Crişan, Structure and reducibility of the mixed metal oxides obtained from Ni-Al layered double hydroxides. Catalytic activity in CO2 methanation reaction. 617

L. K. Krasteva, K. I. Papazova, A. S. Bojinova, N. V. Kaneva, A. A. Apostolov, Synthesis and characterization of ZnO and TiO2 powders, nanowire ZnO and TiO2/ZnO thin films for photocatalyc applications. 625

P. Petkova, P. Vasilev, I. Dimitrov, The behaviour of osmium ions in the tetrahedral oxygen coordination. 631

N. Kaneva, A. Ponomareva, L. Krasteva, D. Dimitrov, A. Bojinova, K. Papazova, G. Suchaneck, V. Moshnikov, Surface and photocatalytic properties of nanostructured ZnO thin films doped with iron. 635

R. Vl. Gavrilova, R. I. Petkov, Researches on the structure and properties of heat treated, nickel alloyed, molybdenum modified aluminum bronze. 644

S. A. Siuleiman, D. V. Raichev, A. S. Bojinova, D. T. Dimitrov, K. I. Papazova, Nanosized composite ZnO/TiO2 thin films for photocatalytic applications. 649

 

 

 

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