80^th Anniversary for Prof. Ivan Schopov, DSc

M. H. Moemeni, M. A. Amrollahi, F. Tamaddon, A facile catalyst-free Knoevenagel condensation of pyridinecarbaldehydes and active methylene compounds

R.Venkata Nadh, M. Sireesha, Kinetics and mechanism of Ru (III) catalysed and uncatalysed oxidation of DL-alanine by N-bromosuccinimide

H. Zhang, H. Xue, J. Yang, L. Liang, Determination of complex 12-grade phytic acid dissociation constants

S. Hina, M. Mustafa, T. Hayat, On the exact solution for peristaltic flow of couple-stress fluid with wall properties

J. Mladenović, A. Radovanović, R. Pavlović, B. Radovanović, J. Zdravković, G. Aćamović-Đoković, Cytotoxicity, antimicrobial and antioxidant activity of Daucus carota L., Lycopersicon esculentum Mill. and Capsicum annuum L

R. A. Girchev, P. P. Markova, P. T. Todorov, E. D. Naydenova, Sympathovagal balance after application of N-modified nociceptin analogues

S. Murugavel, D. Lakshmanan, Sangaraiah Nagarajan, Alagusundaram Ponnuswamy, Synthesis and crystal structure of 6-(1-benzyl-5-methyl-1H-1,2,3-triazol-4-yl)-4-(2-methoxyphenyl)-3,4-dihydropyrimidine-2(1H)-thione activity

G. Mohammadi Ziarani, M. Shakiba Nahad, N. Lashgari, Green synthesis of 2-substituted benzothiazole derivatives under solvent-free conditions

H. R. Pouretedal, F. Momenzadeh, Synthesis, characterization and study of photocatalytic activity of nanocomposites of oxides and sulfides of Ni(II) and Ni(III)

G. S. Seth, S. Sarkar, Hydromagnetic natural convection flow with induced magnetic field and n^th order chemical reaction of a heat absorbing fluid past an impulsively moving vertical plate with ramped temperature

S. N. Mousavi-Kani, A. Bahari, Z. Moradinedjad, Synthesis and characterization of nanohybrid lanthanum oxide doped with polystyrene in electronic devices

J. Petkova, K. Nikolova, D. Boyadzhiev, A. Aladjadjiyan, G. Antova, Statistical analysis of seed oils from melon and pumpkin by using colour parameters

A. Morsali, Z. Alavi, S. A. Beyramabadi, Evaluation of thermodynamic properties of long-chain organic compounds using GMA equation of state

Z. Czech, A. Kowalczyk, P. Ragańska, A. Antosik, Polymerization shrinkage of UV curable dental composites containing multifunctional methacrylates

A. Farhadi, T. Hamoule, M. Ali Takassi, T. Arizavipour, Catalytic synthesis of 1,4-dihydropyridine derivatives using hexagonal mesoporous silicate (HMS)

M. Zaky, M. Y. El-Sayed, S. M. El-Megharbel, S. A. Taleb, M.S. Refat, Synthesis, chemical structures elucidation and biological studies on the effect of some vital metal ions on vitamin A: Ca(II), Mg(II), Zn(II), Fe(III) and VO(II) complexes

M. Hajjami, A. Ghorbani-Choghamarani, F. Gholamian, Multicomponent synthesis of bioactive 1-amidoalkyl-2-naphtols under solvent-free conditions

F. Shakeel, F. K. Alanazi, I. A. Alsarra, N. Haq, Solution thermodynamics and solubility of indomethacin in ethanol-water mixtures in the temperature range from 293.15 to 318.15 K

A. Z. Mirza, F. A. Siddiqui, New, simple and validated UV-spectrophotometric methods for the estimation of pyridoxine hydrochloride in bulk and formulation

K. Abu-Shandi, A. R. Halawah, AlSayed Sallam, Gh. Al-Edwan, A. R. Al-Tawaha, Sh. A. Albajawi, E. S. M. Abu-Nameh, Simultaneous analysis of glycyrrhizic acid and preservatives in licorice aqueous extract by HPLC/PDA detection

Y. Karakirova, N. Yordanov, Mannitol as a radiation sensitive material for electron paramagnetic resonance dosimetry

M. Kazemi, Phenolic profile, antimicrobial and anti-inflammatory activity of Carum copticum L. essential oil

A. Jafari, A. Ramazani, M. Rouhani, Efficient one-pot synthesis of substituted propanamide derivatives by a three-component reaction of 2-oxopropyl benzoate, 1,1,3,3-tetramethylbutyl isocyanide and aromatic carboxylic acids in water

M. B. Miric, R. S. Peric, S. P. Dimitrijevic, S. A. Mladenovic, S. R. Marjanovic, Differences in the mode of thermomechanical processing between white gold alloys to produce semi-finished products

J. G. Ivanova, L. V. Kabaivanova, P. D. Petrov, S. N. Yankova, Optimization strategies for improved growth, polysaccharide production and storage of the red microalga Rhodella reticulat

M. Awais, H. Shafeek, Low cost fabrication of tandem dye-sensitized solar cells

Proceedings of the Vth National Crystallographic Symposium – Preface

B. Donkova, V. Petkova, Comparison of thermal behaviour of γ-MnC₂O₄.2H₂O in oxidative and inert media

K. I. Milenova, A. E. Eliyas, V. N. Blaskov, I. A. Avramova, I. D. Stambolova, S. V. Vassilev, P. M. Nikolov, N. A. Kassabova, S. K. Rakovsky, Comparative study of ZnO photocatalyst samples prepared by different methods

R. I. Petkov, R. Vl. Gavrilova, L. P. Atanasov, Investigation of the possibility to increase the mechanical properties of ferritic nodular cast iron

L. Tsvetanova, N. Petrova, S. Ferdov, V. Kostov-Kytin, R. Nikolova, Crystal structure of Ag⁺ exchanged ETS-4 at room temperature and 150 K

A. A. Petrova, S. M. Angelova, I. A. Nikolchina, R. I. Russev, V. B. Kurteva, B. L. Shivachev, R. P. Nikolova, Novel 13-membered cyclic dioxatetraaza scaffolds – synthesis, solution and solid state characterization

A. K. Stoyanova-Ivanova, S. D. Terzieva, G. D. Ivanova, M. A. Mladenov, D. G. Kovacheva, R. G. Raicheff, S. I. Georgieva, B. S. Blagoev, A. J. Zaleski, V. Mikli, The use of high-temperature superconducting cuprate as a dopant to the negative electrode in Ni-Zn batteries

V. I. Petrunov, L. S. Andreeva, S. I. Karatodorov, V. I. Mihailov, S. D. Terzieva, I. Ilievska, A. K. Stoyanova-Ivanova, V. G. Tumbalev, V. Mikli, Analysis of elemental composition of a heat activated, multi-force, nickel titanium othodontic archwire

V. G. Petrov, S. D. Terzieva, V. G. Tumbalev, V. Mikli, L. S. Andreeva, A. K. Stoyanova-Ivanova, Influence of the treatment period on the morphology and the chemical composition of the thermally activated orthodontic archwires

Y. I. Kouzmanova, I. V. Dimitrova, G. D. Gentscheva, L. I. Aleksandrov, M. G. Markova-Velichkova, D. G. Kovacheva, Comparative study of the phase formation and interaction with water of calcium-silicate cements with dental applications

S. Dimitrovska-Lazova, S. Aleksovska, P. Tzvetkov, V. Mirčeski, D. Kovacheva, Influence of Y-ion substitution on structural and electrochemical characteristics of YCo_0.5Fe_0.5O₃

I. K. Mihailova, L. Radev, V. A. Aleksandrova, I. V. Colova, I. M. M. Salvado, M. H. V. Fernandes, Novel merwinite/akermanite ceramics: in vitro bioactivity

K. L. Zaharieva, Z. P. Cherkezova-Zheleva, B. N. Kunev, I. G. Mitov, S. S. Dimova, Impact of chemical composition on preparation of nanodimensional spinel ferrites

E. V. Todorova, G. E. Chernev, St. P. Djambazov, Synthesis and characterization of silica hybrid materials applicable for defect remediation of concrete

M. Abdallah, N. Velikova, Y. Ivanova, Y. Dimitriev, Synthesis and characterization of poly sulfide-functionalized hybrid mesoporous silica

T. S. Tsoncheva, I. G. Genova, N. Scotti, M. D. Dimitrov, A. Gallo, D. G. Kovacheva, N. Ravasio, Silica supported copper and cobalt oxide catalysts for methanol decomposition: Effect of preparation procedure

A. Shalaby, D. Nihtianova, P. Markov, A. D. Staneva, R. S. Iordanova, Y. B. Dimitriev, Structural analysis of reduced graphene oxide by transmission electron microscopy

I. G. Dakova, V. A. Dakov, M. Karadjov, I. B. Karadjova, Cu(II)-imprinted copolymer microparticles: effect of the porogen solvents on particle size, morphology and sorption efficiency

L. Djerahov, P. Vasileva, I. Karadjova, I. Dakova, R. M. Kurakalva, Silver nanoparticles embedded in biocompatible polymers: extraction efficiency toward metals

V. M. Dyulgerov, L. T. Dimowa, K. Kossev, R. P. Nikolova, B. L. Shivachev, Solvothermal synthesis of theophylline and N,N'-(ethane-1,2-diyl)diformamide co-crystals from DMF decomposition and N-formylation trough catalytic effect of 3-carboxyphenylboronic acid and cadmium acetate

N. G. Kostova, M. Achimovičová, A. Eliyas, N. Velinov, V. Blaskov, I. Stambolova, E. Gock, TiO₂ obtained from mechanically activated ilmenite and its photocatalytic properties

M. D. Dimitrov, R. N. Ivanova, V. Štengl, J. Henych, D. G. Kovacheva, T. S. Tsoncheva, Optimization of CeO₂-ZrO₂ mixed oxide catalysts for ethyl acetate combustion

A. M. Stoyanova, N. K. Ivanova, A. D. Bachvarova-Nedelcheva, R. S. Iordanova, Synthesis and photocatalytic performance of Fe (III), N co-doped TiO₂ nanoparticles

K. I. Milenova, A. E. Eliyas, V. N. Blaskov, I. A. Avramova, I. D. Stambolova, Y. G. Karakirova, S. V. Vassilev, P. M. Nikolov, N. A. Kasabova, S. K. Rakovsky, Copper doped zinc oxide nanopowders used for degradation of residual azo dyes in wastewaters

K. L. Zaharieva, K. I. Milenova, Z. P. Cherkezova-Zheleva, S. S. Dimova, B. N. Kunev, A. E. Eliyas, I. G. Mitov, I. D. Stambolova, V. N. Blaskov, Effect of the duration of mechanochemical treatment on the photocatalytic activity under UV light irradiation of nano-sized zinc oxide synthesized by precipitation

K. V. Koleva, N. I. Velinov, T. S. Tsoncheva, I. G. Mitov, Preparation, structure and catalytic properties of copper-zinc ferrites

M. P. Tsvetkov, K. L. Zaharieva, Z. P. Cherkezova-Zheleva, M. M. Milanova, I. G. Mitov, Photocatalytic activity of nanostructure zinc ferrite-type catalysts in degradation of Malachite green under UV-light

L. Dimowa, I. Piroeva, S. Atanasova-Vladimirova, B. Shivachev, S. Petrov, Compositional and structural study of partially exchanged on Na⁺, K⁺, Mg²⁺ and Ca²⁺ natural heulandite

T. I. Apostolova, Intensity and SAR dependent changes in conformation of frog skeletal muscle total protein content after irradiation with 2.45 GHz electromagnetic field

R. D. Gegova, A. D. Bachvarova-Nedelcheva, R. S. Iordanova, Y. B. Dimitriev, Synthesis and crystallization of gels in the TiO₂–TeO₂–ZnO system

A. Yoleva, S. Djambazov, P. Djambazov, Study of medieval ceramics excavated at the monastery of Karaachteke (Varna, Bulgaria)

N. Kaneva, A. Bojinova, K. Papazova, D. Dimitrov, I. Svinyarov, M. Bogdanov, Effect of thickness on the photocatalytic properties of ZnO thin films

N. Kaneva, A. Bojinova, K. Papazova, D. Dimitrov, Sol aging effect on the structure and photocatalytic action of ZnO films for pharmaceutical drugs degradation

T. D. Todorova, Yu. A. Kalvachev, Seed-mediated approach to size-controlled synthesis of a mordenite type zeolite from organic template free initial gel

G. Patronov, I. Kostova, D. Tonchev, Influence of the content of samarium on the structure and the optical properties of zinc borophosphate materials

S. Zh. Todorova, Z. P. Cherkezova-Zheleva, I. D. Yordanova, A. Ganguly, H. G. Kolev, S. Mondal, M. G. Shopska, K. K. Tenchev, N. I. Velinov, A. K. Ganguli, G. B. Kadinov, Nano-sized iron oxide with controlled size modified with Pd for purification processes

P. Petkova, K. Boubaker, P. Vasilev, M. Mustafa, T. Larbi, Urbach’s rule of Ni doped Mn₃O₄ thin films

D. Marinkova, M. Michel, R. Raykova, D. Danalev, S. Yaneva, L. Yotova, P. Griesmar, Investigation on the proliferation of Gram negative bacterial cells onto sol-gel carriers

A. Hassaan, S. Yaneva, L. Yotova, Design of optical biosensors for detection of pharmaceutical products