Autor: Nilsson, M. - Katalog OPAC zbiorów

Tytuł:: Discrete Tomography: Magic Numbers for N-Fold Symmetry
Autorzy:: Huck, C.
Moll, M.
Nilsson, J.
Powiązania:: https://bibliotekanauki.pl/articles/1372751.pdf
Data publikacji:: 2014-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.43.-j
61.44.Br
Opis:: We consider the problem of distinguishing convex subsets of n-cyclotomic model sets Λ by (discrete parallel) X-rays in prescribed Λ-directions. In this context, a 'magic number' $m_{Λ}$ has the property that any two convex subsets of Λ can be distinguished by their X-rays in any set of $m_{Λ}$ prescribed Λ-directions. Recent calculations suggest that (with one exception in the case n=4) the least possible magic number for n-cyclotomic model sets might just be N+1, where N=lcm(n,2).
Źródło:: Acta Physica Polonica A; 2014, 126, 2; 486-489
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Scaling of the Thue-Morse Diffraction Measure
Autorzy:: Baake, M.
Grimm, U.
Nilsson, J.
Powiązania:: https://bibliotekanauki.pl/articles/2048160.pdf
Data publikacji:: 2014-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.05.cc
61.43.-j
61.44.Br
Opis:: We revisit the well-known and much studied Riesz product representation of the Thue-Morse diffraction measure, which is also the maximal spectral measure for the corresponding dynamical spectrum in the complement of the pure point part. The known scaling relations are summarised, and some new findings are explained.
Źródło:: Acta Physica Polonica A; 2014, 126, 2; 431-434
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: At the Tip of an MeV Beam: Provoking Cells and Performing Tomographic Imaging
Autorzy:: Pallon, J.
Arteaga-Marrero, N.
Nilsson, Ch.
Elfman, M.
Kristiansson, P.
Nilsson, C.
Wegdén, M.
Olsson, M.
Åkerström, B.
Powiązania:: https://bibliotekanauki.pl/articles/1808531.pdf
Data publikacji:: 2009-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 07.79.-v
29.40.Wk
87.53.-j
87.53.Ay
25.40.Cm
29.30.Ep
29.30.Kv
61.43.Gt
Opis:: Biological applications of ion beams have recently become a new important research field using single ion hit facilities to study individual living cells and their response to the hit of a counted number of ions. One motivation is the search for a better understanding of the fundamental processes taking place in cells and organs as a result of irradiation. Another comes from the increasing interest in using high energy protons and heavy ions as a modality for radiotherapy of deep seated tumours. In the view of treatment efficiency, study of cell culture behaviour under controlled radiation experiments, and in different chemical environments at single ion hit facilities, is a first step towards a better understanding of the processes. Tomographic techniques are applicable to situations where you need information of the inside of an object but do not want to section it into thin slices or cannot do it. Using focused MeV ion beams for tomography restricts the sample size to the order of 10-100 μm, depending of the initial energy. On the other hand, the ability to focus at a sub-micrometer level makes ion beams well suited for analyses of small sized objects as cells, spores, etc. The scanning transmission ion microscopy mode of tomography gives the mass density and corresponding morphological structure of holes and pores. It can then be used to correct the results from the other mode, particle induced X-ray emission tomography. Here is discussed a porosity analysis of bentonite clay that is planned to form an important buffer zone around canisters filled with spent nuclear reactor fuel waste deposited 500 m underground in Sweden.
Źródło:: Acta Physica Polonica A; 2009, 115, 2; 501-506
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The importance of accurate measurement of comminuted logging residues moisture contents for small-scale forest owners
Autorzy:: Nilsson, D.
Pettersson, R.
Thornqvist, T.
Nylinder, M.
Powiązania:: https://bibliotekanauki.pl/articles/52509.pdf
Data publikacji:: 2016
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:: measurement
forest residue
bioenergy
scaling
moisture content
private forest owner
Źródło:: Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2016, 59, 198
1644-3985
Pojawia się w:: Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Symptoms and Clinical Findings From the Musculoskeletal System Among Operators at a Call Centre in Sweden-A 10-Month Follow-Up Study
Autorzy:: Toomingas, A.
Nilsson, T.
Hagberg, M.
Hagman, M.
Tornqvist, E. W.
Powiązania:: https://bibliotekanauki.pl/articles/90255.pdf
Data publikacji:: 2003
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: symptoms
clinical findings
musculoskeletal
call centre
follow-up study
choroby narządów ruchu
układ kostny
ból mięśniowy
komputer
fizjologia pracy
uraz kręgosłupa
pozycja przy pracy
zagrożenia zdrowia
praca przy komputerze
Opis:: The musculoskeletal health among 57 operators at 1 call centre in Sweden was studied with 10 monthly follow-ups, parallel to a reference group of 1,226 professional computer users in other occupations. Operators at this call centre were more symptom-loaded than the other professional computer users in spite of their younger age and shorter exposure to computer work. Symptoms were long-lasting or recurrent. Muscle tenderness and nerve affections in the neck-shoulder region were the most common specific findings and diagnoses at medical examination of incident symptom cases. More extensive studies should be done on the working conditions and health status among call centre workers.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2003, 9, 4; 405-418
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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