131. Rak prostateSimona Borštnar, Dejan Bratuš, Tanja Čufer, Andrej Kmetec, Borut Kragelj, Franc Kramer, Zdenka Ovčak, Sandi Poteko, Boris Sedmak, Boštjan Šeruga, Bojan Štrus, 2016, dictionary, encyclopaedia, lexicon, manual, atlas, map Abstract: Prenovljena različica knjižice Rak prostate je obsežen in odlično zasnovan ter strukturiran priročnik o raku prostate, namenjen bolnikom z rakom prostate, njihovim svojcem pa tudi širši laični javnosti. Priročnik vsebinsko precej poljudno in razumljivo bralcu najprej predstavi žlezo prostato ter njena pomen in vlogo v telesu, nato pa ga izčrpno seznani z vsemi vidiki raka prostate, od mogočih dejavnikov tveganja do znakov začetne in napredovale bolezni, vsemi elementi diagnostike, vrstami zdravljenja in v končni fazi tudi lajšanjem neželenih učinkov zdravljenja in tudi znaki napredovale neobvladane bolezni. Pomembna odlika knjižice Rak prostate je, da bralca ne samo dobro seznani z boleznijo, ampak ga tudi natančno pouči o strokovnih merilih, na katerih temeljijo odločitve zdravnikov pri izbiri raznih metod zdravljenja. Posebno obsežen del besedila je namenjen prepoznavanju in obvladovanju neželenih učinkov metod lokalnega in sistemskega zdravljenja, kar bo bolnikom in njihovim svojcem gotovo zelo olajšalo pot zdravljenja.
Published in DiRROS: 25.07.2016; Views: 5994; Downloads: 1124
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137. Novel complex stacking of fully-ordered transition metal layers in Li [sub] 4 FeSbO [sub] 6 materialsEric McCalla, Bojan Budič, Robert Dominko, 2015, original scientific article Abstract: As part of a broad project to explore Li4MM′O6 materials (with M and M′ being selected from a wide variety of metals) as positive electrode materials for Li-ion batteries, the structures of Li4FeSbO6 materials with both stoichiometric and slightly deficient lithium contents are studied here. For lithium content varying from 3.8 to 4.0, the color changes from yellow to black and extra superstructure peaks are seen in the XRD patterns. These extra peaks appear as satellites around the four superstructure peaks affected by the stacking of the transition metal atoms. Refinements of both XRD and neutron scattering patterns show a nearly perfect ordering of Li, Fe, and Sb in the transition metal layers of all samples, although these refinements must take the stacking faults into account in order to extract information about the structure of the TM layers. The structure of the most lithium rich sample, where the satellite superstructure peaks are seen, was determined with the help of HRTEM, XRD, and neutron scattering. The satellites arise due to a new stacking sequence where not all transition metal layers are identical but instead two slightly different compositions stack in an AABB sequence giving a unit cell that is four times larger than normal for such monoclinic layered materials. The more lithium deficient samples are found to contain metal site vacancies based on elemental analysis and Mössbauer spectroscopy results. The significant changes in physical properties are attributed to the presence of these vacancies. This study illustrates the great importance of carefully determining the final compositions in these materials, as very small differences in compositions may have large impacts on structures and properties.
Keywords: materiali, elektrokemija, spektrografija
Published in DiRROS: 31.03.2015; Views: 4778; Downloads: 802
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