Ara
Toplam kayıt 65, listelenen: 31-40
Fabrication and properties of dense ex situ magnesium diboride bulk material synthesized using spark plasma sintering
(IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND, 2009-09)
High density ex situ magnesium diboride bulks were synthesized from commercial MgB(2) powder using spark plasma sintering under a range of applied uniaxial pressures between 16 and 80 MPa. The microstructure was characterized ...
Exergetic Analysis of Using Oxygenated Fuels in Spark-Ignition (SI) Engines
(Energy & Fuels (ACS Publications), 2009)
In this study, the use of the oxygenated fuels in spark-ignition (SI) engines has been investigated by means of exergy analysis. For this purpose, a two-zone quasi-dimensional thermodynamic cycle model was used. The cycle ...
Exergy Analysis of SI Engines
(International Journal of Exergy (Inderscience Publishers), 2008)
In this study, exergy (availability) analysis of a Spark Ignition (SI) engine has been performed theoretically during compression, combustion and expansion processes of the engine cycle. For this purpose, a thermodynamic-based ...
Effective atomic numbers and electron densities of CuGaSe2 semiconductor in the energy range 6-511 keV
(JOHN WILEY & SONS LTD, THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND, 2008-09)
The effective atomic numbers and electron densities of the CuGaSe2 semiconductor were calculated at 29 different energies from 6.9 to 511.0 keV by using the measured mass attenuation coefficients. Also, the mass attenuation ...
Investigation of the Effect of Dual Ignition on the Exhaust Emissions of an SI Engine Operating on Different Conditions by Using Quasi-dimensional Thermodynamic Cycle Model
(Strojarstvo (Croatian Union of Mechanical Engineers and Naval Architects), 2009)
In the presented study, the effects of using dual-spark plug and variation of the spark plug location on the exhaust emissions of an SI engine operating in different conditions were investigated theoretically. A quasi-dimensional ...
Lateral variations of the modal (a/b) values for the different regions of the World
(Journal of Geodynamics, 2002)
Several catalogues of global earthquakes reported for the time period from 1900 to 2000 have been compiled to examine lateral variations of the modal (a/b) values as derived from the Gutenberg–Richter empirical law. For ...
Mineralogy, whole-rock and Sr–Nd isotope geochemistry of mafic microgranular enclaves in Cretaceous Dagbasi granitoids, Eastern Pontides, NE Turkey: Evidence of magma mixing, mingling and chemical equilibration
(0009-2819/$ - see front matter r 2008 Elsevier GmbH. All rights reserved. doi:10.1016/j.chemer.2008.08.002, 2008-08-04)
Rocks of the Late Cretaceous Dagbasi Pluton (88–83 Ma), located in the eastern Pontides, include mafic microgranular enclaves (MMEs) ranging from a few centimetres to metres in size, and from ellipsoidal to ovoid inshape. ...
Measurment of L Subshell X-Ray Production Cross-Sections at Energy 31,635 keV and L Subshell Fluoressance Yields for Elements 74 ? Z ? 92
(X-Ray Spectrometry, 2002)
TheL
l
,L
α
,L
β
andL
γ
X-rayproductioncross-sectionsandL
i
(
i
=
1,2and3)X-rayfluorescence(XRF)cross-sectionshavebeenmeasuredforsomeelementsintheatomicrange55
≤
Z
≤
81at59.54keV.ThevaluesofL
i
...
Mathematical analysis of spark ignition engine via the combination of the first and second laws of thermodynamics
(Proceedings of Royal Society A-Mathematical Physical & Engineering Sciences (Royal Society Publishing), 2008)
This study aims at the theoretical exergetic evaluation of spark ignition engine operation. For this purpose, a two-zone quasi-dimensional cycle model was installed, not considering the complex calculation of fluid motions. ...
Measurment of L X-Ray Production Cross-Sections and Li Subshell Florescence Yields
(Journal of Electron Spectrometry And Related Phenomena, 2003-04-03)
Li (i=1, 2 and 3) X-ray production cross sections have been measured for 14 elements in the atomic number range 55≤Z≤81 at 15.73 keV. The values of Li subshell fluorescence yields (ω1, ω2 and ω3) have been determined using ...