SOFIA,UNIVERSITY

Langenstrassen R Huth H Pohl M Sehmidt K-H Behrendt G Ivanyi S I Goering H Wildau,Technische Faehhoehsehule Sofia,University of Chemical Technology Metallurgy Bundesanstalt fuer Materialforschung -Pruefung (American Plastics Council Alliance for the Polyurethanes Industry)... 

Department of Physics, Sofia University, Sofia, Bulgaria Physics Department and OPTIMAS Research Center, Technical University of Kaiserslautern, Germany... 

Victor G. IVANOV, Sofia University, Faculty of Physics, 5 J. Bourchier Blvd., BG 1164 Sofia, Bulgaria, e-mail vgi phvs.uni-sofia.bg... 

Department of Solid State Physics, Faculty ofPhysics, Sofia University, Sofia 1126, Bulgaria... 

Feb. 29,1908, Sankt Petersburg, Russia - Nov. 19,2002, Sofia, Bulgaria) Kaishev was born in Russia where his father was at that time at the Russian General Staff Academy. He graduated with a diploma in chemistry from Sofia University in 1930. As a Humboldt fellow he was in Germany (Berlin and Breslau) and obtained his Ph.D. degree from Technische Hochschule zu Breslau under the supervision of Franz Simon (1893-1956) in 1932 [i, ii]. 

He started to work at the Chemical Faculty of Sofia University where he became a professor and the head of the Department of Physical Chemistry, in 1947. Kaishev founded the Institute of Physical Chemistry of the Bulgarian Academy of Sciences in 1958, and helped to establish the Central Laboratory of Electrochemical Power Sources [i]. Kaishev started to collaborate with - Stran-ski in Berlin in 1931 [iii] and became his assistant in Sofia in 1933. They laid the fundamentals of the crystal growth theory. They proposed the first kinetic theory of the two-dimensional nucleation and growth. The spiral type growth during electrocrystallization was first observed by Kaishev on silver [iii]. On the history of the creation of the molecular-kinetic theory of crystal growth see [iv]. 

At the Sofia University Sv. Kliment Ohridski , Faculty of Chemistry, Department of... 

Department of Genetics, Faculty of Biology, Sofia University... 

Tereza Dekova is an Assistant Professor of Genetics at Sofia University, Bulgaria. Her interests include genetics, proteomics, cytogenetics and genomics in plants. Dr. Dekova is the author of the 25 scientific articles. 

M. BALEVA, A. ATANASOV, N. TODOROV Faculty of Physics, Sofia University, 5 J. Bauchier bid, 1164 Sofia, Bulgaria... 

The work is supported by the National and Sofia University Funds for Scientific Investigations, contracts no <51301/ 03 and no 67, respectively, and by the French-Bulgarian bilateral Program PAI-RILA 2/5. 

Polymer Testing 19, No.4, 2000, p.415-7 CHARACTERIZATION OF POLYEPICHLOROHYDRIN AND COPOLYMERS OF EPICHLOROHYDRIN-GYLICIDYL ETHERS BY IR SPECTROSCOPY Glavcheev I Sirashki G Mateva R Sofia,University of Chemical Technology ... 

In the paper Effect of Surfactants on Drop Stability and Thin Film Drainage presented by Professor Krassimir Danov (Sofia University, Bulgaria) the stability of suspensions/emulsions is under consideration. Traditional consideration of colloidal systems is based on inclusion only Van-der-Waals (or dispersion) and electrostatic components, which is refereed to as DLVO (Derjaguin- Landau-Verwey-Overbeek) theory. Professor Danov s contribution shows that not only DLVO components but also other types of the inter-particle forces may play an important role in the stability and colloidal systems. Those contributions are due to hydrodynamic interactions, hydration and hydrophobic forces, steric and depletion forced, oscillatory structural forces. The hydrodynamic and colloidal interactions between drops and bubbles emulsions and foams are even more complex (as compared to that of suspensions of solid particles) due to the fluidity and deformability of those colloidal objects. The latter two features and thin film formation between the colliding particles have a great impact on the hydrodynamic interactions, the magnitude of the disjoining pressure and on the dynamic and thermodynamic stability of such colloidal systems. 

Sofia University, Biological Faculty, 1000 Sofia, Bulgaria ... 

Sofia University, The Heun Project Heun functions, their gen-eraUzations and applications, http //theheunproject.org/... 

Glavchev I Yordanova H Draganov L Sofia,University of Chemical Technology ... 

Pancho Tzankov studied laser physics at Sofia University, Bulgaria, and received his Ph.D. in physical chemistry from the Technical University of Munich, Germany. He is now a postdoctoral fellow at the Max Bom Institute in Berhn, Germany. His research activities involve development of new nonhnear optical parametric sources of ultrashort pulses and their apphcation for time-resolved spectroscopy. 

Specializing for 2 years in Leipzig University under the supervision of Wilhelm Ostwald, in December 1907 Z. Karaoglanov was appointed assistant in chemistry at the Faculty of Physics and Mathematics of Sofia University. In 1910 he was elected docent and since 1911 was already a lecturer in analytical chemistry (Fig. 13.1.2). In 1920 Z. Karaoglanov was elected professor, and being a member of the Bulgarian Chemical Society, he was elected also member of the first editorial board of its journal Chemistry and Industry in 1922. 

Z. Karaoglanov was elected Rector of Sofia University in 1922 and in 1932 and was also head of its Analytical Chemistry Department till the end of his life on 21 June 1943. Readers may find valuable and more detailed information on Zakhari Karaoglanov and his scientific achievements in [5, 6]. 

Ivan Stranski finished the primary and secondary school in Sofia and then studied chemistry in Vienna and in Sofia University where he graduated in 1922. In the same year Stranski joined the Friedrich-Wilhelms-Universitdt (since 1946... 

In 1926 Ivan Stranski was elected docent in the Chemistry Faculty of Sofia University in 1929 he was elected associate professor and in 1937 a full professor (Figs. 13.2.2 and 13.2.3). He was the first lecturer in physical chemistry at the Sofia University, and here it is necessary to mention also the names of his co-workers and later close friends Rostislav Kaischev and Lubomir Krastanov. 

Fig. 13.2.2 Ivan Stranski (first row, second from the right) and Rostislav Kaischev (last row, first from the right) with professors and assistants of Sofia University in front of the Chemistry Faculty (early 1930s)...

Fig. 13.2.3 Ivan Stranski giving a lecture in the Chemistry Faculty of Sofia University (middle 1930s)...

In 1933 Kaischev became an assistant of Stranski at the Chemistry Faculty of Sofia University, and they both developed the theory of mean separation works [16-18]. In 1934 Kaischev was invited to visit the Ukrainian Physical-Technical Institute, in Kharkiv, Ukraine, and worked for 3 months in the laboratory for physics of low temperatures. In the autumn of 1937 he joined the Munich University for 1 year, again as a fellow of the Alexander von Humboldt Foundation. Two of his papers from this period related to the physics at low temperatures were published in Zeitschrift fiir Physikalische Chemie [27, 28]. 

In 1944 Kaischev became a docent at Sofia University, in 1947 professor and also corresponding member of BAS, and in 1961 academician (regular member of BAS). In 1958, Kaischev founded the Institute of Physical Chemistry, BAS, and... 

Stefan Christov (Fig. 13.4.1) was bom on 12 December 1910 in Sofia. Finishing the secondary school, he studied chemistry and graduated from Sofia University Saint Kliment Ohridski. Recommended by Ivan Stranski, Stefan Christov specialized in physical chemistry at the Technische Hochschule (now Technical University), Berlin, within the period 1934—1936. Back to his home country, S. Christov worked as an assistant professor both at the Institute of Analytical Chemistry and at the Institute of Physical Chemistry of the Bulgarian Academy of Sciences (BAS). In 1947 he was elected professor in physical chemistry and founded the Physical Chemistry Department at the Sofia Polytechnic. 

Stefan Christov was among the colleagues and close friends of Rostislav Kaischev (Fig. 13.4.2) [23], and 1 stUl remember how he introduced himself at the celebration of Kaischev s 70th birthday. He said When 1 joined the Physical Chemistry Department of Sofia University, there were four persons there one professor—it was Ivan Stranski one assistant—it was Rostislav Kaischev one doctorant—it was Ljubomir Krastanov and one student, preparing his diploma work— it was me ... 

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