Yayıncı "Scientific Technical Research Council Turkey-Tubitak" TR-Dizin İndeksli Yayınlar Koleksiyonu için listeleme
Toplam kayıt 19, listelenen: 1-19
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Chaos in product maps
(Scientific Technical Research Council Turkey-Tubitak, 2010)We discuss how chaos conditions on maps carry over to their products First we give a counterexample showing that the product of two chaotic maps (in the sense of Devaney) need not be chaotic We then remark that if two maps ... -
Composition of the essential oils of Pinus nigra Arnold from Turkey
(Scientific Technical Research Council Turkey-Tubitak, 2010)Essential oil composition of the needles of Pinus nigra Arnold collected from different localities in Turkey was investigated by GC and GC/MS. The main components in the oils were alpha-pinene, beta-pinene, beta-caryophyllene, ... -
The construction of maximum independent set of matrices via Clifford algebras
(Scientific Technical Research Council Turkey-Tubitak, 2007)In [1], [2] and [6] the maximum number of some special type n x n matrices with elements in F whose nontrivial linear combinations with real coefficients are nonsingular is studied where F is the real field R, the complex ... -
Dielectric behavior of the catalyst zeolite NaY
(Scientific Technical Research Council Turkey-Tubitak, 2007)Zeolites are crystalline hydrated aluminosilicates of alkaline and alkaline earth metals. The basic zeolite structure is an anionic frame of Si and Al T-atoms, which are tetrahedral and coordinated with oxygen atoms. The ... -
Experimental and computational studies on the absorption properties of novel formazan derivatives
(Scientific Technical Research Council Turkey-Tubitak, 2017)Eight novel 3-(4-(benzyloxy)phenyl)-5-(4-bromophenyl)-1-(4-substituted-phenyl)formazan (4a 4h) were synthesized by coupling of substituted phenylhydrazones with diazonium salts of 4-bromoaniline. The substituted phenylhydrazones, ... -
Fekete-Szego problem for a general subclass of analytic functions
(Scientific Technical Research Council Turkey-Tubitak, 2019)In this present investigation, we introduced a certain subclass of starlike and convex functions of complex order b, using a linear multiplier differential operator D(lambda,mu)(m)f (z). For this class, the Fekete-Szego ... -
Finite subquandles of sphere
(Scientific Technical Research Council Turkey-Tubitak, 2010)In this work finite subquandles of sphere are classified by using classification of subgroups of orthogonal group O(3). For any subquandle Q of sphere there is a subgroup G(Q) of O(3) associated with Q. It is shown that ... -
Graph-directed fractal interpolation functions
(Scientific Technical Research Council Turkey-Tubitak, 2017)It is known that there exists a function interpolating a given data set such that the graph of the function is the attractor of an iterated function system, which is called a fractal interpolation function. We generalize ... -
Influence of acid and heavy metal cation exchange treatments on methane adsorption properties of mordenite
(Scientific Technical Research Council Turkey-Tubitak, 2015)In this study, the adsorption of methane (CH4) capacities onto natural mordenite obtained from Izmir, Turkey, and its cationic forms (CuM, AgM, FeM, and HM samples) were investigated at the temperatures of 0 and 25 degrees ... -
Kaurane diterpenoids from three Sideritis species
(Scientific Technical Research Council Turkey-Tubitak, 2005)Some kaurane diterpenoids were isolated from 3 species of the genus Sideritis (Lamiaceae) growing in the Eastern Mediterranean region. Sideritis libanotica subsp. libanotica contained siderol 2 and sideridiol 3. Sideritis ... -
Linear connections on light-like manifolds
(Scientific Technical Research Council Turkey-Tubitak, 2008)It is well-known that a torsion-free linear connection on a light-like manifold (M, g) compatible with the degenerate metric g exists if and only if Rad(TM) is a Killing distribution. In case of existence, there is an ... -
Near optimal step size and momentum in gradient descent for quadratic functions
(Scientific Technical Research Council Turkey-Tubitak, 2017)Many problems in statistical estimation, classification, and regression can be cast as optimization problems. Gradient descent, which is one of the simplest and easy to implement multivariate optimization techniques, lies ... -
Novel Analogues of 2-Pyrazoline: Synthesis, Characterization, and Antimycobacterial Evaluation
(Scientific Technical Research Council Turkey-Tubitak, 2008)Fourteen new 1-[(N, N-disubstitutedthiocarbamoylthio) acetyl]-3-(2-thienyl)-5-aryl-2-pyrazoline derivatives were synthesized by reacting 1-(chloroacetyl)-3-(2-thienyl)-5-aryl-2-pyrazolines and appropriate sodium salts of ... -
Sesquiterpene hydrocarbons of the essential oil of Actinolema macrolema Boiss
(Scientific Technical Research Council Turkey-Tubitak, 2013)The essential oils of Actinolema macrolema Boiss. (Apiaceae) were obtained by hydrodistillation in the first 3 (sample A) and the following 3 h (sample B) from crushed fruits and dried leaves (sample C), which were ... -
Synthesis and antimicrobial investigation of some 5H-pyridazino[4,5-b]indoles
(Scientific Technical Research Council Turkey-Tubitak, 2013)Synthesis and in vitro antimicrobial activities are reported for a series of 1,3,5-substituted 4-oxo-3,4-dihydro-5H-pyridazino[4,5-b]indole derivatives. Corresponding pyridazino[4,5-b]indoles were prepared from ethyl ... -
Synthesis and antinociceptive activities of some novel benzimidazole-piperidine derivatives
(Scientific Technical Research Council Turkey-Tubitak, 2017)In this study, a series of benzimidazole-piperidine derivatives were synthesized with the objective of developing potent antinociceptive agents. Some 2-(4-substituted-phenyl) 1 [2 (piperidin-1-yBethyl]-1 H-benzimidazole ... -
Synthesis and characterization of a novel 3-amino-1,2,4-triazole lead(II) coordination polymer
(Scientific Technical Research Council Turkey-Tubitak, 2014)A novel [Pb-2(mu-atrz)(2)(mu-CH3COO)(CH3COO)](n) (atrz = 3 amino-1,2,4-triazole) complex was synthesized and characterized by IR spectroscopy, thermogravimetric analysis, and single crystal X-ray diffraction. The molecular ... -
Synthesis and MAO inhibitory activity of novel thiazole-hydrazones
(Scientific Technical Research Council Turkey-Tubitak, 2017)A series of new thiazole-hydrazones (3a-3n) were synthesized, characterized, and screened for their hMAO-A and hMAO-B inhibitory activity by an in vitro fluorometric method. Selectivity indexes (SIs) were expressed as IC50 ... -
Synthesis, anticandidal activity, and cytotoxicity of some thiazole derivatives with dithiocarbamate side chains
(Scientific Technical Research Council Turkey-Tubitak, 2014)Some thiazole derivatives bearing dithiocarbamic acid esters were synthesized in order to investigate their anticandidal activity and cytotoxicity. The structures of the obtained final compounds (6a-j) were confirmed by ...