Temat: 41.75.-i - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Nuclear Microprobe - a Challenging Tool in Plant Sciences
Autorzy:: Mesjasz-Przybyłowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/2028925.pdf
Data publikacji:: 2001-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 89.60.-k
41.75.-i
07.78.+s
Opis:: The nuclear microprobe is a microanalytical tool capable of quantitative studies of elemental distribution at the ppm level with a spatial resolution of the order of 1μm. This sensitivity is adequate for most elements of interest, and the spatial resolution is acceptable for studies of elemental distribution in organs, tissues, and cells. The main techniques used in plant science are particle induced X-ray emission using protons, proton backscattering, scanning transmission ion microscopy, and particle induced gamma-ray emission. Specimen preparation is the most difficult part of analysis, and only cryotechniques are recommended presently for all types of microanalytical studies.
Źródło:: Acta Physica Polonica A; 2001, 100, 5; 659-668
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Geological Studies by Means of Proton Microbeam System
Autorzy:: Przybyłowicz, W. J.
Powiązania:: https://bibliotekanauki.pl/articles/2028934.pdf
Data publikacji:: 2001-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 41.75.-i
07.78.+s
Opis:: Features necessary to make a scanning nuclear microprobe a useful tool in geological studies are summarized and its present position among other microanalytical techniques is reviewed.
Źródło:: Acta Physica Polonica A; 2001, 100, 5; 679-686
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Formation of Multilayered $Ti-Hf-Si-N//NbN//Al_2O_3$ Coatings with High Physical and Mechanical Properties
Autorzy:: Pogrebnjak, A.
Prozorova, M.
Kovalyova, M.
Kolisnichenko, O.
Beresnev, V.
Oyoshi, K.
Takeda, Y.
Kaverina, A.
Shypylenko, A.
Partyka, J.
Powiązania:: https://bibliotekanauki.pl/articles/1400428.pdf
Data publikacji:: 2013-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 41.75.-i
61.80.-x
81.15.-z
Opis:: This work presents the first results on forming of multi-layered superhard coatings $Ti-Hf-Si-N//NbN//Al_2O_3$ and their properties as well as structure. Microstructure, elemental and phase compositions of multi-layered coatings obtained by different methods were investigated. There were used such methods as: scanning electron microscopy EDS JEM-7000F microscope (with microanalysis) for research of cross-section of coatings, with subsequent Auger-electron spectroscopy, X-ray diffraction analysis, optical inverted microscope Olympus GX51, electron-ion microscopes Quanta 200 3D and Quanta 600 (scanning electron microscopy), equipped by the detector of X-ray radiation of the system PEGASUS 2000. It was stated that hardness of coatings has reached 56 GPa, and at the same time the factor of wearing during friction was the smallest - $2.571 \times 10^{-5}$. It was also noted that nitrogen pressure in the chamber at the deposition of the top layer significantly influences on the properties of samples. For example, the coefficient of friction at P=0.3 Pa from 0.2 at the beginning of track to 0.001 (during the tests), and at the pressure of nitrogen P=0.8 Pa, the coefficient of friction was equal to 0.314 at the beginning of track and 0.384 at the end (during the tests).
Źródło:: Acta Physica Polonica A; 2013, 123, 5; 813-815
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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