Autor: Richards, B.G. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Modelling the effects of repeated wheel loads on soil profiles
Autorzy:: Richards, B.G.
Baumgartl, T.
Horn, R.
Grasle, W.
Powiązania:: https://bibliotekanauki.pl/articles/25769.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: soil profile
porosity measurement
mechanical load
soil productivity
aggregate degradation
root penetration
soil compaction
wheel load
Źródło:: International Agrophysics; 1997, 11, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Single Particle and Collective Spin Excitations in Semimagnetic Quantum Wells
Autorzy:: Perez, F.
Jusserand, B.
Richards, D.
Karczewski, G.
Powiązania:: https://bibliotekanauki.pl/articles/2038315.pdf
Data publikacji:: 2004-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.25.Dc
73.21.-b
75.70.-i
78.30.-j
Opis:: Collective and single-particle spin-flip excitations of a two-dimensional electron gas in a semimagnetic Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te quantum well are observed by resonant Raman scattering. Application of a magnetic field splits the spin-subbands and a spin-polarization is induced in the electron gas. Above some critical field, a collective spin-flip mode, which disperses with in-plane wave vector, dominates the spectra. The energy of this mode is given by the bare Zeeman energy at vanishing wave vector as predicted by Larmor's theorem and its in-plane dispersion is well described by a model of the interacting polarizability of a spin polarized electron gas when both exchange and correlation are taken into account.
Źródło:: Acta Physica Polonica A; 2004, 106, 3; 311-317
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Heat Gain From Thermal Radiation Through Protective Clothing With Different Insulation, Reflectivity and Vapour Permeability
Autorzy:: Brode, P.
Kuklane, K.
Candas, V.
Den Hartog, E. A.
Griefahn, B.
Holmer, I.
Meinander, H.
Nocker, W.
Richards, M.
Havenith, G.
Powiązania:: https://bibliotekanauki.pl/articles/90351.pdf
Data publikacji:: 2010
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: protective clothing
heat stress
heat budget models
thermal manikin
Opis:: The heat transferred through protective clothing under long wave radiation compared to a reference condition without radiant stress was determined in thermal manikin experiments. The influence of clothing insulation and reflectivity, and the interaction with wind and wet underclothing were considered. Garments with different outer materials and colours and additionally an aluminised reflective suit were combined with different number and types of dry and pre-wetted underwear layers. Under radiant stress, whole body heat loss decreased, i.e., heat gain occurred compared to the reference. This heat gain increased with radiation intensity, and decreased with air velocity and clothing insulation. Except for the reflective outer layer that showed only minimal heat gain over the whole range of radiation intensities, the influence of the outer garments’ material and colour was small with dry clothing. Wetting the underclothing for simulating sweat accumulation, however, caused differing effects with higher heat gain in less permeable garments.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2010, 16, 2; 231-244
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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