Synthesis, Characterization and Properties of Copper Clusters
... confinement effect. The main purpose of this thesis has been the synthesis of copper clusters as an affordable alternative to the most studied clusters up to now: gold and silver clusters. In this dissertation, firstly, we have explored the synthesis of different copper clusters (CuCLs) sizes and th ...
... confinement effect. The main purpose of this thesis has been the synthesis of copper clusters as an affordable alternative to the most studied clusters up to now: gold and silver clusters. In this dissertation, firstly, we have explored the synthesis of different copper clusters (CuCLs) sizes and th ...
UvA-DARE (Digital Academic Repository) Multi
... just a fraction of a second to a few seconds, than our own Sun will over its entire lifetime. This energy is generated by super hot plasma travelling at relativistic speeds. The plasma is ejected from near the horizon of a newly created black hole in the form of a narrow jet pointing straight toward ...
... just a fraction of a second to a few seconds, than our own Sun will over its entire lifetime. This energy is generated by super hot plasma travelling at relativistic speeds. The plasma is ejected from near the horizon of a newly created black hole in the form of a narrow jet pointing straight toward ...
Evolution and colors of helium-core white dwarf stars with high
... high stellar-density environment of globular clusters or by evolution in compact binaries. Thus, a large population of He-core white dwarfs offers the possibility of constraining globular cluster dynamics and evolution (Moehler & Bono 2008). The possible detection of single low-mass white dwarfs in N ...
... high stellar-density environment of globular clusters or by evolution in compact binaries. Thus, a large population of He-core white dwarfs offers the possibility of constraining globular cluster dynamics and evolution (Moehler & Bono 2008). The possible detection of single low-mass white dwarfs in N ...
Nuclear Magnetic Resonance and Potentiometric
... values compatible with CN2= 0.60 ppm and CN8'= 0.30 ppm reported for linear amines8 (Table 11). No shielding constants could be obtained for the H3L3+ form because at p H 0.4 this species is not fully formed. The pH dependence of the proton chemical shifts of the ethylene protons and the methyl prot ...
... values compatible with CN2= 0.60 ppm and CN8'= 0.30 ppm reported for linear amines8 (Table 11). No shielding constants could be obtained for the H3L3+ form because at p H 0.4 this species is not fully formed. The pH dependence of the proton chemical shifts of the ethylene protons and the methyl prot ...
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... <400 cm−1 up to this pressure. However, around 4 GPa, consistent with the visual observation shown in Figure 2, the formation of solid crystal structure is indicated by the replacement of broad Raman modes of the liquid phase by sharper ones. In addition, new modes appear in the spectral region 150− ...
... <400 cm−1 up to this pressure. However, around 4 GPa, consistent with the visual observation shown in Figure 2, the formation of solid crystal structure is indicated by the replacement of broad Raman modes of the liquid phase by sharper ones. In addition, new modes appear in the spectral region 150− ...
Evolutionary and pulsational properties of white dwarf stars
... white dwarfs. However, we will discuss in some detail the statistical properties of the white dwarf population, and in particular the white dwarf luminosity function. 2 The essentials of white dwarfs 2.1 A historical perspective White dwarf stars have captured the attention of astronomers since thei ...
... white dwarfs. However, we will discuss in some detail the statistical properties of the white dwarf population, and in particular the white dwarf luminosity function. 2 The essentials of white dwarfs 2.1 A historical perspective White dwarf stars have captured the attention of astronomers since thei ...
Infrared Multiphoton Dissociation Spectroscopy of a Gas
... the asymmetric stretching frequency, which is interpreted as reflecting a weakening of the U−O bonds.26,36,38 Less red-shifts were observed for UO2(acetonitrile)n2+ complexes, in accord with the lower GB[acetonitrile] = 748 kJ/mol.32 UO2(water)n2+ complexes could not be prepared by electrospray ioniz ...
... the asymmetric stretching frequency, which is interpreted as reflecting a weakening of the U−O bonds.26,36,38 Less red-shifts were observed for UO2(acetonitrile)n2+ complexes, in accord with the lower GB[acetonitrile] = 748 kJ/mol.32 UO2(water)n2+ complexes could not be prepared by electrospray ioniz ...
A pulsed dye laser for photo-ionization of magnesium atoms
... avoided when a resonant multi-step photo-ionization process is used. The atoms are rst selectively excited on resonant transitions and then ionized. Hence, only the desired species will have a signicant ionization probability. This process also allows for isotope selectivity, if the spectral width ...
... avoided when a resonant multi-step photo-ionization process is used. The atoms are rst selectively excited on resonant transitions and then ionized. Hence, only the desired species will have a signicant ionization probability. This process also allows for isotope selectivity, if the spectral width ...
Metastable optical gratings in compound semiconductors
... of defects in III–V and II–VI alloys.2 These defects can be transformed into metastable states by optical excitation at low temperature, and can recover by thermal regeneration. The optical sensitivity of these defects, and the strong optical gratings that are produced, make them candidates for opti ...
... of defects in III–V and II–VI alloys.2 These defects can be transformed into metastable states by optical excitation at low temperature, and can recover by thermal regeneration. The optical sensitivity of these defects, and the strong optical gratings that are produced, make them candidates for opti ...
3 Gravitational Waves from Binaries
... a single interferometer, by itself, from detecting with confidence shortduration gravitational-wave bursts (though it might be possible for a single interferometer to search for the periodic waves from known pulsars). The non-Gaussian noise can be removed by cross correlating two, or preferably thre ...
... a single interferometer, by itself, from detecting with confidence shortduration gravitational-wave bursts (though it might be possible for a single interferometer to search for the periodic waves from known pulsars). The non-Gaussian noise can be removed by cross correlating two, or preferably thre ...
T = c D
... No way to travel there, we must use telescopes. Searching for life as we know it: The 1st step is to find a rocky planet in the stellar habitable zone (HZ), although it could also be a satellite of a gas giant. The planet should be in the Galactic habitable zone, not in a globular cluster or clo ...
... No way to travel there, we must use telescopes. Searching for life as we know it: The 1st step is to find a rocky planet in the stellar habitable zone (HZ), although it could also be a satellite of a gas giant. The planet should be in the Galactic habitable zone, not in a globular cluster or clo ...
Metal-optic and Plasmonic Semiconductor
... metal and radiation losses. (b, c, d, e) Coupling efficiency (γcoupling /γrad ) to Si-waveguide, energy confinement factor into active region, threshold material gain coefficient for lasing, and cavity quality factor as a function of a and l, respectively, with b = 150 nm and g = 600 nm. (f, g) Coup ...
... metal and radiation losses. (b, c, d, e) Coupling efficiency (γcoupling /γrad ) to Si-waveguide, energy confinement factor into active region, threshold material gain coefficient for lasing, and cavity quality factor as a function of a and l, respectively, with b = 150 nm and g = 600 nm. (f, g) Coup ...
Envelope inflation in massive stars near the Eddington limit
... cultural significance, astronomy is also one of the oldest scientific disciplines. Sailors, for example the Polynesians, used the motion of the stars to navigate the mighty seas. Rare astronomical phenomena were also documented, for example an unusual brightening event in the night sky was recorded ...
... cultural significance, astronomy is also one of the oldest scientific disciplines. Sailors, for example the Polynesians, used the motion of the stars to navigate the mighty seas. Rare astronomical phenomena were also documented, for example an unusual brightening event in the night sky was recorded ...
Optical Methods for Tympanic Membrane Characterisation Towards Objective Otoscopy in Otitis Media
... My contributions to Paper II include the majority of the measurements made; the analysis of the experimental data and the main responsibility for writing the paper. My contributions to Paper III include design, implementation and application of the Monte Carlo software; measurements of optical prope ...
... My contributions to Paper II include the majority of the measurements made; the analysis of the experimental data and the main responsibility for writing the paper. My contributions to Paper III include design, implementation and application of the Monte Carlo software; measurements of optical prope ...
Basic Principles and Applications of Holography
... represents perfect and permanent calm in spite of the fact that waves from the two sources are passing through the dark area at all times. For sound waves, the same areas would represent regions of absolute silence. A Trace of the Maxima from Two Point Sources Figure 10-3 represents a trace of the c ...
... represents perfect and permanent calm in spite of the fact that waves from the two sources are passing through the dark area at all times. For sound waves, the same areas would represent regions of absolute silence. A Trace of the Maxima from Two Point Sources Figure 10-3 represents a trace of the c ...
Design and use of guided mode resonance filters for
... Even though the principles of diffraction had been known since the time of Newton, it was Rittenhouse who in 1786, produced the first man-made diffraction grating from hairs spaced by the threads of two fine screws [1]. Years later, in 1902, Wood noticed unexpected rapid intensity variations in ligh ...
... Even though the principles of diffraction had been known since the time of Newton, it was Rittenhouse who in 1786, produced the first man-made diffraction grating from hairs spaced by the threads of two fine screws [1]. Years later, in 1902, Wood noticed unexpected rapid intensity variations in ligh ...
6.7 GHz Methanol Masers and the GBT
... • This makes 6.7 GHz methanol masers unique compared to OH and H2O masers which are also found towards late type stars/low-mass stars. • What makes the 6.7 GHz line even more interesting is that it traces one of the earliest phases of massive star formation. • A sample of 6.7 GHz methanol masers can ...
... • This makes 6.7 GHz methanol masers unique compared to OH and H2O masers which are also found towards late type stars/low-mass stars. • What makes the 6.7 GHz line even more interesting is that it traces one of the earliest phases of massive star formation. • A sample of 6.7 GHz methanol masers can ...
MASSES, RADII, AND ORBITS OF SMALL KEPLER PLANETS: THE
... precise Doppler measurements of the host stars. Based on an analysis of the Kepler brightness measurements, along with high-resolution imaging and spectroscopy, Doppler spectroscopy, and (for 11 stars) asteroseismology, we establish low false-positive probabilities for all of the transiting planets ...
... precise Doppler measurements of the host stars. Based on an analysis of the Kepler brightness measurements, along with high-resolution imaging and spectroscopy, Doppler spectroscopy, and (for 11 stars) asteroseismology, we establish low false-positive probabilities for all of the transiting planets ...
Selected observation targets at a glance per constellation
... type F, will move to the constellation Pictor around the year 6400 AD. S Doradus. Hypergiant, a prototype of the group S Doradus class of variable stars, is the brightest member of the open cluster NGC 1910: latter visible in binoculars as a bright condensation within the main bar of the LMC. Is usu ...
... type F, will move to the constellation Pictor around the year 6400 AD. S Doradus. Hypergiant, a prototype of the group S Doradus class of variable stars, is the brightest member of the open cluster NGC 1910: latter visible in binoculars as a bright condensation within the main bar of the LMC. Is usu ...
The importance of episodic accretion for low
... Hubeny 1990). The gas is assumed to be a mixture of hydrogen (70%) and helium (30%) , with an equation of state (Black & Bodenheimer 1975) that accounts (i) for the rotational and vibrational degrees of freedom of molecular hydrogen, and (ii) for the different chemical states of hydrogen and helium. ...
... Hubeny 1990). The gas is assumed to be a mixture of hydrogen (70%) and helium (30%) , with an equation of state (Black & Bodenheimer 1975) that accounts (i) for the rotational and vibrational degrees of freedom of molecular hydrogen, and (ii) for the different chemical states of hydrogen and helium. ...
JCMT HARP CO 3-2 Observations of Molecular Outflows in W5
... because of the greater velocity complexity and poorer spatial resolution of our observations. The outflow selection criteria in these papers requires the presence of a sub-mm clump in order to identify an outflow, making a similar objective identification impossible for our survey. As discussed late ...
... because of the greater velocity complexity and poorer spatial resolution of our observations. The outflow selection criteria in these papers requires the presence of a sub-mm clump in order to identify an outflow, making a similar objective identification impossible for our survey. As discussed late ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.