Prohlížení Acta Polytechnica. 2013, vol. 53 dle názvu
Zobrazují se záznamy 76-95 z 169
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Materials for Fusion Applications
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)An overview of materials foreseen for use or already used in fusion devices is given. The operating conditions, material requirements and characteristics of candidate materials in several specific application segments are ... -
MAXIMAL SUBSETS OF PAIRWISE SUMMABLE ELEMENTS IN GENERALIZED EFFECT ALGEBRAS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We show that in any generalized effect algebra (G;⊕, 0) a maximal pairwise summable subset is a sub-generalized effect algebra of (G;⊕, 0), called a summability block. If G is lattice ordered, then every summability ... -
MEASURING SUPERMASSIVE BLACK HOLE SPINS IN AGN
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Measuring the spins of supermassive black holes (SMBHs) in active galactic nuclei (AGN) can inform us about the relative role of gas accretion vs. mergers in recent epochs of the life of the host galaxy and its AGN. Recent ... -
METALS IN THE ICM: WITNESSES OF CLUSTER FORMATION AND EVOLUTION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The baryonic composition of galaxy clusters and groups is dominated by a hot, X-ray emitting Intra-Cluster Medium (ICM). The mean metallicity of the ICM has been found to be roughly 0.3 ÷ 0.5 times the solar value, therefore ... -
MODELING JET INTERACTIONS WITH THE AMBIENT MEDIUM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Recent high-resolution (see, e.g., [13]) observations of astrophysical jets reveal complex structures apparently caused by ejecta from the central engine as the ejecta interact with the surrounding interstellar material. ... -
Modification of Composite Material Fillers by Atmospheric Plasma Discharge
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)This work is focused on the observation of the influence of cold atmospheric dielectric barrier discharge (DBD) on a modification of textile samples. The main objective of the experiment is to research wettability change ... -
MOONLIGHT: A NEW LUNAR LASER RANGING RETROREFLECTOR AND THE LUNAR GEODETIC PRECESSION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Since the 1970s Lunar Laser Ranging (LLR) to the Apollo Cube Corner Retroreflector (CCR) arrays (developed by the University of Maryland, UMD) supplied almost all significant tests of General Relativity (Alley et al., 1970; ... -
MOONLIGHT: A NEW LUNAR LASER RANGING RETROREFLECTOR INSTRUMENT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Since 1969 Lunar Laser Ranging (LLR) to the Apollo Cube Corner Reflector (CCR) arrays has supplied several significant tests of gravity: Geodetic Precession, the Strong and Weak Equivalence Principle (SEP, WEP), the ... -
Multigroup Approximation of Radiation Transfer in SF6 Arc Plasmas
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The first order of the method of spherical harmonics (P1-approximation) has been used to evaluate the radiation properties of arc plasmas of various mixtures of SF6 and PTFE ((C2F4)n, polytetrafluoroethylene) in the ... -
NEUTRINOLESS DOUBLE BETA DECAY: AN EXTREME CHALLENGE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Neutrino-less Double Beta Decay is the only known way to possibly resolve the nature of neutrino mass. The chances to cover the mass region predicted by the inverted hierarchy require a step forward in detector capability. ... -
NEUTRINOS AS COSMIC MESSENGERS IN THE ERA OF ICECUBE, ANTARES AND KM3NET
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Using neutrinos as cosmic messengers for observation of non-thermal processes in the Universe is a highly attractive and promising vision, which has been pursued in various neutrino telescope projects for more than two ... -
NEUTRINOS FROM ICARUS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Liquid Argon Time Projection Chambers are very promising detectors for neutrino and astroparticle physics due to their high granularity, good energy resolution and 3D imaging, allowing for a precise event reconstruction. ... -
NEW CONCEPT OF SOLVABILITY IN QUANTUM MECHANICS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)In quite a few recent quantum models one is allowed to make a given Hamiltonian H self-adjoint only after an ad hoc generalization of Hermitian conjugation, H†→H‡:= Θ −1H†Θ wherethe suitable operator Θ is called Hilbert-space ... -
Non-Hermitian Star-shaped Quantum Graphs
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)A compact review is given, and a few new numerical results are added to the recent studies of the q-pointed one-dimensional star-shaped quantum graphs. These graphs are assumed endowedwith certain specific, manifestly ... -
NON-THERMAL EMISSION FROM CATACLYSMIC VARIABLES: IMPLICATIONS ON ASTROPARTICLE PHYSICS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We review the lines of evidence that some cataclysmic variables (CVs) are the sources of non-thermal radiation. It was really observed in some dwarf novae in outburst, a novalike CV in the high state, an intermediate polar, ... -
NOTE ON VERMA BASES FOR REPRESENTATIONS OF SIMPLE LIE ALGEBRAS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We discuss the construction of the Verma basis of the enveloping algebra and of finite dimensional representations of the Lie algebra An. We give an alternate proof of so-called Verma inequalities to the one given in [1] ... -
Nuclear Fusion Effects Induced in Intense Laser-Generated Plasmas
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Deutered polyethylene (CD2)n thin and thick targets were irradiated in high vacuum by infrared laser pulses at 1015W/cm2 intensity. The high laser energy transferred to the polymer generates plasma, expanding in vacuum at ... -
On an Algorithm for Multiperiodic Words
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We consider an algorithm by Tijdeman and Zamboni constructing a word of length k thathas periods p1, . . . , pr, and the richest possible alphabet. We show that this algorithm can be easilystated and its correctness briefly ... -
ON RENORMALIZATION OF POISSON–LIE T-PLURAL SIGMA MODELS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Covariance of the one-loop renormalization group equations with respect to Poisson–Lie T-plurality of sigma models is discussed. The role of ambiguities in renormalization group equations of Poisson–Lie sigma models with ... -
On Some Statistical Properties of GRBs with Measured Redshifts Having Peaks in Optical Light Curves
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We studied the subset of optical light curves of gamma-ray bursts with measured redshifts and well-sampled R band data that have clearly detected peaks. Among 43 such events, 11 are promptoptical peaks (P), coincident with ...