1,800 research outputs found
Stark Broadening of in III Lines in Astrophysical and Laboratory Plasma
Besides the need of Stark broadening parameters for a number of problems in
physics, and plasma technology, in hot star atmospheres the conditions exist
where Stark widths are comparable and even larger than the thermal Doppler
widths. Using the semiclassical perturbation method we investigated here the
influence of collisions with charged particles for In III spectral lines. We
determined a number of Stark broadening parameters important for the
investigation of plasmas in the atmospheres of A-type stars and white dwarfs.
Also, we have compared the obtained results with existing experimental data.
The results will be included in the STARK-B database, the Virtual Atomic and
Molecular Data Center and the Serbian Virtual Observatory
Influence of Microlensing on Spectral Anomaly of Lensed Objects
Here we consider the influence of the microlensing on the spectrum of a
lensed object taking into account that composite emission is coming from
different regions arranged subsequently around the central source. We assumed
that the lensed object has three regions with the black body emission; first
the innermost with the highest temperature of , second and third
(located around the central) with slightly lower temperatures
and K, respectively. Than we explore the flux anomaly in lensed
object due to microlensing. We compare U,V and B spectra of a such source. This
results show that, due to microlensing, in a spectroscopically stratified
object a flux anomaly is present.Comment: 4 pages, 2 figures, 1 tabl
Generation of Silver Nanoparticles by the Pin-Hole DC Plasma Source with and without Gas Bubbling
Silver nanoparticles were produced using the pin-hole discharge generated by dc non-pulsing high voltage directly in silver nitrate solutions. Sodium nitrate was alternatively added to increase solution conductivity and decrease input energy for the discharge breakdown. Argon or oxygen was bubbled through the discharge region. Comparative experiments were evaluated by UV-VIS spectrometry. Formation of silver nanoparticles with the average size of 100 nm was confirmed by SEM/EDS analysis
Creating Quality-Based Smart Sustainable Public Parking Enterprises: A Methodology to Reframe Organizations into Smart Organizations
Enterprise sustainability is a key aim in the fourth industrial revolution era, requiring a new approach based on intelligent technologies that considers the new roles of leadership and sustainability as well as the new trends in emerging smart technologies, with a new focus on Society 5.0. Smart parking has a significant role in fostering the determinants of sustainability in public parking enterprises and achieving adequate mobility in smart cities. Thus, smart parking is the subject of the research presented in this paper. This study defines the vital processes, including leadership processes and technologies needed for smart parking, managed by innovative public parking enterprises. Having this in mind, trends, key facts, the results of present innovative technology enterprises, and methodologies for designing and establishing smart public parking enterprises are analyzed. This paper aims to determine the sustainability of parking enterprises in their current states by developing a MORSO methodology. The MORSO methodology includes independent variables, including the leadership level of the intelligent technologies used, quality of the business processes, and risk related to the business processes, and a dependent variable, the sustainability of smart public parking enterprises. The MORSO methodology also includes steps for the definition of indices related to variables that could be assessed by appropriate techniques such as using questionnaires. Finally, the MORSO methodology introduces steps by which statistical approaches and artificial neural networks (ANN) are applied to test hypotheses regarding correlations between independent and dependent variables. The results of the presented model case study application show that there are strong correlations between smart sustainability and leadership (0.769), quality (0.904), and risk (−0.884), respectively. Additionally, at the level of the presented case study, the results of the application of the ANN indicate that the values of the dependent variable in the fol-lowing time period can be determined with high accuracy, based on the knowledge of the values from the previous period, with a regression coefficient value of R = 0.99482. Finally, in this way, the transition from existing public enterprises to sustainable smart public parking enterprises is envisioned
Action du chlorure de bunomidine sur la forme immature d' Echinococcus granulosus
Guilhon Jean, Simitch Tchédomir, Savin Z., Bordjochki A. Action du chlorure de bunamidine sur la forme immature d'Echinococcus granulosus. In: Bulletin de l'Académie Vétérinaire de France tome 120 n°7, 1967. pp. 327-331
Співвідношення навчання і виховання у філософії педагогіки Памфіла Юркевича
24th General Meeting of the European-Grassland-Federation -- JUN 03-07, 2012 -- Lublin, POLANDWOS: 000361159300041Italian ryegrass monoculture and mixtures with red clover (sowing ratios 75:25%, 50:50% and 25:75%) were established in the spring of 2008 at the Institute for Animal Husbandry, Belgrade, with the aim to analyse the possibilities of managing the N supply. There were four N rates for Italian ryegrass monoculture: 0, 100, 150 and 200 kg ha(-1), whilst no N fertilizer was applied to the mixture plots. The trial was carried out during 2008-2010 and the highest total DM yield was obtained with 200 kg N ha(-1), similar to that of the ryegrass-clover mixtures. Ryegrass contributed less to the total yield in the mixtures, because it had lower ratios in the structure of swards than those used at sowing. An Italian ryegrass-red clover sward may have advantages over a pure Italian ryegrass sward fertilized by high rates of N, providing high yield with a more sustainable land-use system.Kuhn, Ministerstwo Rolnictwa Rozwoju Wsi, Lubelski Wegiel Bogdanka S A, Karol Kania Synowie, Rolimpex, Dept Rolnictwa Srodowiska Urzedu Marszalkowskiego Wojewodztwa, Lubelskiego, Linia Hutnicza Szerokotorowa, Powiat Bilgorajski, Centinas, DSV Polska, Perla Browary Lubelskie, Lubella, Uniwersytet Przyrodniczy w Lublinie, Miasto Lublin, Apis, Herbapol Lublin S A, OSM Krasnystaw, Powiat Krasnostawski, Powiat Lubelski, Powiat Krasnystaw, Lubelska Izba Rolnicza, Gmina Krasnystaw, Urzad Miasta Krasnysta
Chiral effective action with heavy quark symmetry
We derive an effective action combining chiral and heavy quark symmetry,
using approximate bosonization techniques of QCD. We explicitly show that the
heavy-quark limit is compatible with the large (number of color) limit in
the meson sector, and derive specific couplings between the light and heavy
mesons (, , ...) and their chiral partners. The relevance of this
effective action to solitons with heavy quarks describing heavy baryons is
discussed.Comment: 14 pages, SUNY-NTG-92/2
Self-assembly in solution of a reversible comb-shaped supramolecular polymer
We report a single step synthesis of a polyisobutene with a bis-urea moiety
in the middle of the chain. In low polarity solvents, this polymer
self-assembles by hydrogen bonding to form a combshaped polymer with a central
hydrogen bonded backbone and polyisobutene arms. The comb backbone can be
reversibly broken, and consequently, its length can be tuned by changing the
solvent, the concentration or the temperature. Moreover, we have proved that
the bulkiness of the side-chains have a strong influence on both the
self-assembly pattern and the length of the backbone. Finally, the density of
arms can be reduced, by simply mixing with a low molar mass bis-urea
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