Pretraživanje
Prikaz rezultata 151-155 od 155
Istorija primene antibiotika
(Srpsko hemijsko društvo, 2004)
Antibiotici su hemijska organska jedinjenja (uglavnom mikrobiološkog porekla) ili njihovi derivati, koji imaju sposobnost da spreče rast ili unište druge mikroorganizme [1]. To je grupa jedinjenja vrlo različitih struktura ...
Counterpropagating beams in nematic liquid crystals
(Optics Express, 2006)
The behavior of counterpropagating self-trapped optical beam structures in nematic liquid crystals is investigated. A time-dependent model for the beam propagation and the director reorientation in a nematic liquid crystal ...
Influence of lanthanum doping on properties of BaTiO3 prepared from organometallic complex
(5th Workshop COST 539, 1 September 2008, Manchester, UK, abstracts and CD proceedings, 2008)
Barium titanate is the first discovered ferroelectric ceramic and one of the most widely used material for various applications. Doping of BaTiO3 (BT) ceramics is very important for obtaining very interesting characteristics ...
Excitation of guided waves in materials with negative refraction
(Elsevier, 2008)
We study, both analytically and numerically, electromagnetic beam transmission through a layered structure that includes a waveguide slab of metamaterial with negative refraction. The resonant excitation of the leaky guided ...
Cerium Oxide Based Nanometric Powders: Synthesis and Characterization
(Science of Sintering, 2007)
Nanometric powders of solid solutions of cerium oxide were obtained by a modified
glycine nitrate procedure. Solid solutions of the host compound CeO2 with one or more
dopants in the lattice were synthesized. Rare earth ...