Ara
Toplam kayıt 210, listelenen: 41-50
Relationship between sums of squares in linear regression and semi-parametric regression
(2009)
In this paper, the sum of squares in linear regression is reduced to sum of squares in semi-parametric regression. We indicated that different sums of squares in the linear regression are similar to various deviance ...
Comparison of generalized approximate cruise range solutions for turbojet/fan aircraft
(Amer Inst Aeronaut Astronaut, 2003)
Two different approximate solutions are proposed and compared with the numerical solution of the constant-altitude-constant-Mach-number cruise range for turbojet/fan aircraft. The approximate solutions consider both cambered ...
A new bisabolene derivative from the essential oil of Prangos uechtritzii fruits
(Georg Thieme Verlag Kg, 2000)
The fruits of endemic Prangos uechtritzii Boiss. & Hausskn. (Umbelliferae) were subjected to hydrodistillation and microdistillation. The resulting volatiles were investigated by CC-MS to determine the composition of the ...
Essential oils of some Boswellia spp., myrrh and opopanax
(Wiley, 2003)
The essential oils obtained by hydrodistillation of resins of Boswellia neglecta, B. pirottae,B. rivae, Commiphora myrrha (myrrh) and C. guidottii (opopanax or scented myrrh) were analysed using GC-MS. alpha-Thujene (19.2%), ...
New caryophyllene derivatives from Betula litwinowii
(American Chemical Society, 2000)
Four new caryophyllene derivatives- 14-hydroxy-4,5-dihydro-beta-caryophyllene (1), 14-acetoxy-4,5 -dihydro-beta-caryophyllene (2), 4,5-dihydro-beta-caryophyllene-14-al (3), and caryophylla-8(14)-en-5-one (4)-are reported ...
Chemical composition of essential oils from leaves and twigs of Pistacia lentiscus, Pistacia lentiscus var. chia, and Pistacia terebinthus from Turkey
(Swets Zeitlinger Publishers, 2004)
The composition of the essential oils from the leaves and twigs of Pistacia lentiscus L., Pistacia lentiscus var. chia (L.), and Pistacia terebinthus L. of Turkish origin were analyzed by gas chromatography/mass spectrometry ...
Thermal shock parameters [R, R ''' and R ''''] of magnesia-spinel composites
(Elsevier Sci LTD, 2003)
Thermal shock parameters (R, R'" and R"") have been calculated using measured strength and modulus values for model magnesia-spinel composite materials. The R'" and R"" parameters vary with both spinel content (0-30%) and ...
Online communication courses: The developments in the area of communication education
(2009)
E-learning as a form of distance education has become one of the essential movements in all levels of education. Almost all of the higher education institutions in Turkey as well as the rest of the world have been trying ...
Relationship between Students’ Understanding of Functions in Cartesian and Polar Coordinate Systems
(Routledge, 2008)
The present study was implemented as a prelude to a study on the generalization of the single variable function concept to multivariate calculus. In the present study we analyze students’ mental processes and adjustments, ...
Antibacterial activity and chemical composition of Turkish propolis
(Verlag Z Naturforsch, 2001)
The antibacterial activities of propolis samples have been examined in vitro, according to the principles accepted for the determination of a similar activity of antibiotics with the use of solid and liquid media. It has ...