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1.
Bone loss in the lower leg during 35 days of bed rest is predominantly from the cortical compartment
Joern Rittweger, Boštjan Šimunič, Giancarlo Bilancio, Natale Gaspare De Santo, Massimo Cirillo, Gianni Biolo, Rado Pišot, Ola Eiken, Igor B. Mekjavić, Marco Narici, 2009, izvirni znanstveni članek

Opis: Immobilization-induced bone loss is usually greater in the epiphyses than in the diaphyses. The larger fraction of trabecular bone in the epiphyses than in the diaphyses offers an intuitive explanation to account for this phenomenon. However, recent evidence contradicts this notion and suggests that immobilization-induced bone loss from the distal tibia epiphysis is mainly from the cortical compartment. The aim of this study was to establish whether this pattern of bone loss was a general rule during immobilization. Wemonitored various skeletal sites with different tissue composition during 5 weeks of immobilization. Ten healthy male volunteers with mean age of 24.3 years (SD 2.6 years) underwent strict horizontal bed rest. Bone scans were obtained during baseline data collection, at the end of bed rest and after 14 days of recovery by peripheral Quantitative Computed Tomography (pQCT). Sectional images were obtained from the distal tibia epiphysis (at 4% of the tibia's length), from the diaphysis (at 38%), from the proximal metaphysis (at 93%) and from the proximal epiphysis (at 98%), as well as from the distal femur epiphysis (at 4% of the femur's length) and from the patella. Relative bone losses were largest at the patella, where they amounted to - 3.2% (SD 1.8%, p < 0.001) of the baseline values, and smallest at the tibia diaphysis, where they amounted to - 0.7% (SD 1.0%, p = 0.019). The relative losses were generally larger from cortical than from trabecular compartments (p = 0.004), and whilst all skeletal sites depicted such cortical losses, substantial trabecular losses were found only from the proximal tibia epiphysis. Results confirm that the differential losses from the various skeletal sites cannot be explained on the basis of trabecular vs. cortical tissue composition differences, but that endocortical circumference can account for the different amounts of bone loss in the tibia. The present study therefore supports the suggestion of the subendocortical layer as a transitional zone, which can readily be transformed into trabecular bone in response to immobilization. The latter will lead to cortical thinning, a factor that has been associated with the risk of fracture and with osteoarthritis.
Najdeno v: ključnih besedah
Povzetek najdenega: ...space flight, simulated microgravity, osteoporosis, exercise, pQCT, ...
Ključne besede: space flight, simulated microgravity, osteoporosis, exercise, pQCT
Objavljeno: 15.10.2013; Ogledov: 2041; Prenosov: 52
URL Polno besedilo (0,00 KB)

2.
Jordan [tau]-derivations of locally matrix rings
Chen-Lian Chuang, Ajda Fošner, Tsiu Kwen Lee, 2013, izvirni znanstveni članek

Opis: Let ▫$R$▫ be a prime, locally matrix ring of characteristic not 2 and let ▫$Q_{ms}(R)$▫ be the maximal symmetric ring of quotients of ▫$R$▫. Suppose that ▫$\delta \colon R \to Q_{ms}(R)$▫ is a Jordan ▫$\tau$▫-derivation, where ▫$\tau$▫ is an anti-automorphism of $R$. Then there exists ▫$a \in Q_{ms}(R)$▫ such that ▫$\delta(x) = xa - a\tau(x)$▫ for all ▫$x \in R$▫. Let ▫$X$▫ be a Banach space over the field ▫$\mathbb{F}$▫ of real or complex numbers and let ▫$\mathcal{B}(X)$▫ be the algebra of all bounded linear operators on ▫$X$▫. We prove that ▫$Q_{ms}(\mathcal{B}(X)) = \mathcal{B}(X)$▫, which provides the viewpoint of ring theory for some results concerning derivations on the algebra ▫$\mathcal{B}(X)$▫. In particular, all Jordan ▫$\tau$▫-derivations of ▫$\mathcal{B}(X)$▫ are inner if ▫$\dim_{\mathbb{F}} X>1$▫.
Najdeno v: ključnih besedah
Povzetek najdenega: ...\in R$▫. Let ▫$X$▫ be a Banach space over the field ▫$\mathbb{F}$▫ of real or...
Ključne besede: mathematics, algebra, anti-automorphism, locally matrix ring, prime ring, Jordan homomorphism, Jordan ▫$\tau$▫-derivation, Banach space
Objavljeno: 15.10.2013; Ogledov: 1595; Prenosov: 24
URL Polno besedilo (0,00 KB)

3.
Report on the 19th SPACE conference
Rune Ellemose Gulev, 2008, strokovni članek

Najdeno v: ključnih besedah
Povzetek najdenega: Zadetek v naslovu
Ključne besede: mednarodna konferenca, SPACE, poročila
Objavljeno: 15.10.2013; Ogledov: 857; Prenosov: 25
URL Polno besedilo (0,00 KB)
Gradivo ima več datotek! Več...

4.
A note on a geometric construction of large Cayley graps of given degree and diameter
György Kiss, István Kovács, Klavdija Kutnar, János Ruff, Primož Šparl, 2008, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...diameter-degree problem, Cayley graph, projective space, ...
Ključne besede: diameter-degree problem, Cayley graph, projective space
Objavljeno: 15.10.2013; Ogledov: 1782; Prenosov: 12
URL Polno besedilo (0,00 KB)

5.
More language(s) - more space(s)?
Nada Zerzer, 2009, izvirni znanstveni članek

Opis: This article addresses the issue how heteroglossic people in the three regions of Carinthia, Primorska, and the Trst/Trieste region experience their multilingualism and its representations in everyday day life. The approach is transdisciplinary and includes theory and methods from fields of political theory, sociology of space, sociolinguistics, ethnography, visual cultures and multimodal discourse analysis. The research focus is on social constructions of space, created by heteroglossic people in their everyday life and by the representations of the languages in their living environment. This article wants to take a closer look at life with - or in - heteroglossia and at possible integrative handling of it
Najdeno v: ključnih besedah
Povzetek najdenega: Zadetek v naslovu
Ključne besede: heteroglossia, public space, representation, language minorities, ethnic minorities, visual culture, geosemiotics, Alpe-Adria region
Objavljeno: 10.07.2015; Ogledov: 1016; Prenosov: 16
URL Polno besedilo (0,00 KB)

6.
Light phenomena in the perception of sacral architecture
Marija Pavličić, Sanja Stevanović, Aleksandra Marinković, 2010, objavljeni strokovni prispevek na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...sacral building, perception, illumination, interior space, ...
Ključne besede: sacral building, perception, illumination, interior space
Objavljeno: 15.10.2015; Ogledov: 1117; Prenosov: 12
URL Polno besedilo (0,00 KB)
Gradivo ima več datotek! Več...

7.
Reflexivity defect of spaces of linear operators
Janko Bračič, Bojan Kuzma, 2009, izvirni znanstveni članek

Opis: For a finite-dimensional linear subspace ▫{$\mathscr{S}} \subseteq {\mathscr{L}} (V,W)$▫ and a positive integer ▫$k$▫, the ▫$k$▫-reflexivity defect of ▫$\mathscr{S}$▫ is defined by ▫${\mathrm{rd}}_k ({\mathscr{S}}) = \dim({\mathrm{Ref}}_k (\mathscr{S})/\mathscr{S})$▫ where ▫${\mathrm{Ref}}_k$▫ is the ▫$k$▫-reflexive closure of ▫$\mathscr{S}$▫. We study this quantity for two-dimensional spaces of operators and for single generated algebras and their commutants.
Najdeno v: ključnih besedah
Povzetek najdenega: ...mathematics, operator theory, reflexivity defect, reflexivity, two-dimensional space of operators, single generated algebra, commutant...
Ključne besede: mathematics, operator theory, reflexivity defect, reflexivity, two-dimensional space of operators, single generated algebra, commutant
Objavljeno: 03.04.2017; Ogledov: 701; Prenosov: 96
URL Polno besedilo (0,00 KB)

8.
The cyclic model for PG(n, q) and a construction of arcs
Giorgio Faina, György Kiss, Stefano Marcugini, Fernanda Pambianco, 2002, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...n-dimensional finite, projective space, cyclic model, ...
Ključne besede: n-dimensional finite, projective space, cyclic model
Objavljeno: 08.08.2016; Ogledov: 948; Prenosov: 49
URL Polno besedilo (0,00 KB)

9.
Integral automorphisms of affine spaces over finite fields
István Kovács, Klavdija Kutnar, János Ruff, Tamás Szönyi, 2015, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...finite field, affine space, integral distance, integral automorphism, ...
Ključne besede: finite field, affine space, integral distance, integral automorphism
Objavljeno: 08.08.2016; Ogledov: 1250; Prenosov: 30
URL Polno besedilo (0,00 KB)

10.
Particulate matter (PM10) patterns in Europe
Janez Žibert, Jure Cedilnik, Jure Pražnikar, 2016, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...particular matter, non-negative matrix factorization, space-time patterns, synoptic situations, ...
Ključne besede: particular matter, non-negative matrix factorization, space-time patterns, synoptic situations
Objavljeno: 08.08.2016; Ogledov: 1196; Prenosov: 68
URL Polno besedilo (0,00 KB)

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