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Wyszukujesz frazę "Schneider, R." wg kryterium: Autor


Wyświetlanie 1-9 z 9
Tytuł:
Analysis of 50-year wind data of the Southern Baltic Sea for modelling coastal morphological evolution – a case study from the Darss-Zingst Peninsula
Autorzy:
Zhang, W.
Harff, J.
Schneider, R.
Powiązania:
https://bibliotekanauki.pl/articles/48896.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
coastal morphological evolution
coastline change
Darss-Zingst Peninsula
modelling
morphodynamic model
sea level
statistical analysis
wind
wind direction
wind speed
Opis:
High-resolution wind series in the southern Baltic Sea for the period of 1958–2007 are analysed to generate representative climate input conditions for a multi-scale morphodynamic model to simulate decadal-to-centennial coastline change. Four seasonal wind classes, each characterized by a predominant distribution of wind direction and speed, are derived from statistical analysis. Further calibration of this statistical description is done by sensitivity studies of the model to generate similar coastline changes of the Darss-Zingst peninsula as the measured data for the last century. The coastline change of this area is then projected for the next 300 years based on four different climate scenarios, through which impacts of accelerated sea level rise and storm frequency on the long-term coastline change are quantified.
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cryocrystallography of Biological Macromolecules
Autorzy:
Schneider, Th. R.
Powiązania:
https://bibliotekanauki.pl/articles/1963363.pdf
Data publikacji:
1997-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.10.Nz
Opis:
X-ray diffraction experiments on crystals of biological macromolecules, especially when carried out on highly intense synchrotron beam lines, frequently suffer from radiation damage. Performing such experiments at cryogenic temperatures virtually eliminates radiation damage thus producing higher quality diffraction data and often making previously intractable problems feasible. In the following article the most important experimental aspects of low temperature diffraction experiments on macromolecular crystals will be discussed.
Źródło:
Acta Physica Polonica A; 1997, 91, 4; 739-744
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Consistent theories of isotropic and anisotropic plates
Spójne teorie izotropowych i anizotropowych płyt
Autorzy:
Kienzler, R.
Schneider, P.
Powiązania:
https://bibliotekanauki.pl/articles/280346.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
linear elasticity
consistent plate theories
uniform-approximation technique
pseudo-reduction technique
Opis:
In this paper, the uniform-approximation technique in combination with the pseudoreduction technique is applied in order to derive consistent theories for isotropic and anisotropic plates. The approach is used to assess and validate the plate theories already established in the literature. Further lines of research are indicated.
W pracy omówiono metodę jednorodnej aproksymacji połączonej z techniką pseudo-redukcji zastosowaną do sformułowania spójnych teorii płyt izotropowych i anizotropowych. Zaprezentowaną metodologię wykorzystano do oceny i weryfikacji teorii już istniejących i dobrze znanych z literatury. Wskazano także dalsze kierunki badań.
Źródło:
Journal of Theoretical and Applied Mechanics; 2012, 50, 3; 755-768
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multidimensional simulation of combustion and knock onset in gas engines
Autorzy:
Tatschl, R.
Priesching, P.
Schneider, J.
Powiązania:
https://bibliotekanauki.pl/articles/245656.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
gas engines
simulation
combustion
efficiency
knock onset
Opis:
Natural gas fuelled internal combustion engines enable efficient energy conversion with relatively low environmental impact. Depending on the specific application, the available fuel quality, and the emission regulations to be fulfilled, different types of gas-engine combustion systems are in use. The major performance and hence efficiency limiting factors in gas fuelled engines are related to the lower ignitability of natural gas at part load and the appearance of abnormal combustion (knock) at high load conditions. This article provides an overview of the multidimensional CFD simulation workflow for the investigation and assessment of flame propagation and knock onset characteristics in different types of natural gas fuelled internal combustion engines. The most common approaches for simulating flame propagation/combustion under engine conditions are presented together with selected models for describing the pre-flame reactions finally leading to knock onset in the unburned in-cylinder charge ahead of the flame. Based on selected application examples, the models’ performance and capabilities with respect to reflecting the essential characteristics of flame propagation and knock onset are presented.
Źródło:
Journal of KONES; 2018, 25, 2; 379-389
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy-Loss of Positrons in Foils
Autorzy:
Schneider, H.
Tobehn, I.
Rückert, M.
Brinkmann, U.
Hippler, R.
Powiązania:
https://bibliotekanauki.pl/articles/1929110.pdf
Data publikacji:
1993-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.77.+p
29.25.-t
34.80.Dp
Opis:
The Giessen slow positron source TEPOS delivers intense beams in the energy range between some eV and 6 keV; with postacceleration up to 80 keV. Results for remoderation are described shortly. Further the energy-losses of positrons with incident energy of 6-20 keV through thin aluminium foils were measured. Cross sections for K- and L-shell ionization of thin silver and gold targets by positron and electron impact have been determined at projectile energies of 30-70 keV. The experimental results are presented in detail; they are confirmed by calculations in plane-wave-Born approximation which include an electron exchange term and account for the deceleration or acceleration of the incident projectile in the nuclear field of the target atom.
Źródło:
Acta Physica Polonica A; 1993, 83, 3; 375-380
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endotoxin concentration in modern animal houses in Southern Bavaria
Autorzy:
Schierl, R
Heise, A.
Egger, U.
Schneider, F.
Eichelser, R.
Neser, S.
Nowak, D.
Powiązania:
https://bibliotekanauki.pl/articles/50088.pdf
Data publikacji:
2007
Wydawca:
Instytut Medycyny Wsi
Tematy:
pig
animal house
Bavaria
endotoxin concentration
cattle
modern house
poultry
dust
endotoxin
Opis:
Agricultural work, particularly livestock farming, is considered to be a notable risk factor for occupational diseases. Endotoxin as a major component of organic dust causes adverse health effects of the airways among farmers. Endotoxin concentrations in airborne and settled dust were measured in modern, naturally ventilated animal houses for different species. Median values of airborne inhalable endotoxin ranged from 16.9 EU/m3 for dairy cattle, 557.9 EU/m3 for beef cattle, 668.7 EU/m3 for pigs, 463.2 EU/m3 for laying hens, to 1,902 EU/m3 for turkeys. The endotoxin levels in settled dust followed the same pattern as the airborne samples. The concentrations were lower than in previous studies, but the proposed Dutch endotoxin threshold (50 EU/m3) was exceeded in most cases. Thus, endotoxin levels in modern animal houses still give concern for health and further reduction of endotoxin exposure in animal houses is desirable.
Źródło:
Annals of Agricultural and Environmental Medicine; 2007, 14, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Silicified sea life – Macrofauna and palaeoecology of the Neuburg Kieselerde Member (Cenomanian to Lower Turonian Wellheim Formation, Bavaria, southern Germany)
Autorzy:
Schneider, S.
Jäger, M.
Kroh, A.
Mitterer, A.
Niebuhr, B.
Vodrážka, R.
Wilmsen, M.
Wood, C. J.
Zágoršek, K.
Powiązania:
https://bibliotekanauki.pl/articles/139394.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Late Cretaceous
Danubian Cretaceous Group
macroinvertebrates
facies
Silica diagenesis
stratigraphy
kreda
makrobezkręgowce
facja
krzemionka diageneza
stratygrafia
Opis:
With approximately 100 species, the invertebrate macrofauna of the Neuburg Kieselerde Member of the Wellheim Formation (Bavaria, southern Germany) is probably the most diverse fossil assemblage of the Danubian Cretaceous Group. Occurring as erosional relicts in post-depositional karst depressions, both the Cretaceous sediments and fossils have been silicified during diagenesis. The Neuburg Kieselerde Member, safely dated as Early Cenomanian to Early Turonian based on inoceramid bivalve biostratigraphy and sequence stratigraphy, preserves a predominantly soft-bottom community, which, however, is biased due to near-complete early diagenetic loss of aragonitic shells. The community is dominated by epifaunal and semi-infaunal bivalves as well as sponges that settled on various (bio-) clasts, and may widely be split into an early bivalve-echinoid assemblage and a succeeding sponge-brachiopod assemblage. In addition to these groups we document ichnofauna, polychaete tubes, nautilids and bryozoans. The fauna provides evidence of a shallow to moderately deep, calm, fully marine environment, which is interpreted as a largescale embayment herein. The fauna of the Neuburg Kieselerde Member is regarded as an important archive of lower Upper Cretaceous sea-life in the surroundings of the Mid-European Island.
Źródło:
Acta Geologica Polonica; 2013, 63, 4; 555-610
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pulsed Power and Power Conditioning Capacitors
Autorzy:
Macdougall, F.
Jow, T.
Ennis, J.
Yang, X.
Yen, S.
Cooper, R.
Gilbert, J.
Schneider, M.
Naruo, C.
Bates, J.
Powiązania:
https://bibliotekanauki.pl/articles/1807873.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
84.32.Tt
84.60.Ve
Opis:
A capacitor development effort focused on capacitors used in pulsed power and power conversion applications underwent at General Atomics Electronic Systems Inc. (GA-ESI) for decades. In recent years, funding for these efforts has accelerated the rate of development progress to the point where the time it takes to decrease the size of a capacitor by half has dropped from 10 years to 4 years. This progress made in pulsed power and power conversion capacitors will be described along with the performance characteristics of today's capacitors.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 989-991
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Refurbished Z Facility: Capabilities and Recent Experiments
Autorzy:
Matzen, M.
Atherton, B.
Cuneo, M.
Donovan, G.
Hall, C.
Herrmann, M.
Kiefer, M.
Leeper, R.
Leifeste, G.
Long, F.
Mckee, G.
Mehlhorn, T.
Porter, J.
Schneider, L.
Struve, K.
Stygar, W.
Weinbrecht, E.
Powiązania:
https://bibliotekanauki.pl/articles/1807851.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
52.58.Lq
52.59.Qy
64.60.A-
81.30.Bx
Opis:
The Z Refurbishment Project was completed in September 2007. Prior to the shutdown of the Z facility in July 2006 to install the new hardware, it provided currents of ≤ 20 MA to produce energetic, intense X-ray sources ( ≈1.6 MJ, > 200 TW) for performing high energy density science experiments and to produce high magnetic fields and pressures for performing dynamic material property experiments. The refurbishment project doubled the stored energy within the existing tank structure and replaced older components with modern, conventional technology and systems that were designed to drive both short-pulse Z-pinch implosions and long-pulse dynamic material property experiments. The project goals were to increase the delivered current for additional performance capability, improve overall precision and pulse shape flexibility for better reproducibility and data quality, and provide the capacity to perform more shots. Experiments over the past year have been devoted to bringing the facility up to full operating capabilities and implementing a refurbished suite of diagnostics. In addition, we have enhanced our X-ray backlighting diagnostics through the addition of a two-frame capability to the Z-Beamlet system and the addition of a high power laser (Z-Petawatt). In this paper, we will summarize the changes made to the Z facility, highlight the new capabilities, and discuss the results of some of the early experiments.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 956-958
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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