Results 1 to 10 of about 251,641 (259)

Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description

open access: yesJournal of Forest Science, 2005
The paper shows a possibility of using Bookstein coordinates for stem shape studies. Bookstein coordinates are simplified to stem shape diameters, for which tests of multidimensional normality, variance-covariance matrix homogeneity, equality of mean ...
M. Křepela, D. Zahradník, J. Sequens
doaj   +3 more sources

Comparison of Norway spruce (Picea abies [L.] Karst.), Scots pine (Pinus sylvestris L.) and European larch (Larix decidua Mill.) stem shape by means of geometrical methods

open access: yesJournal of Forest Science, 2006
In this article the stem shape is compared in three coniferous tree species: Norway spruce, Scots pine and European larch. Stem is investigated by means of geometrical methods.
M. Křepela, R. Petráš
doaj   +3 more sources

Is there a true match in the femoral medullary cavity between neutral and flexion alignment of the stem on a female (Asian) population? [PDF]

open access: yesBMC Musculoskeletal Disorders
Background In total hip arthroplasty, stem alignment has been proposed to occur in the neutral and flexed positions. Nonetheless, there is a paucity of research on the relationship between the shape of the medullary cavity cross-section and its ...
Yusuke Yoshimoto   +3 more
doaj   +2 more sources

Development of Douglas fir merchantable stem volume model in the conditions of the Czech Republic

open access: yesJournal of Forest Science, 2023
A precise merchantable stem volume model of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] is missing in the Czech Republic. The aim of this study was to fit a new model through the reparametrization of volume equations (used in the Czech Republic or
Radoslav Hlavica, Zdeněk Adamec
doaj   +1 more source

Inflammation Shapes Stem Cells and Stemness during Infection and Beyond [PDF]

open access: yesFrontiers in Cell and Developmental Biology, 2016
The outcome of an inflammatory incident can hang in the balance between restoring health and tissue integrity on the one hand, and promoting aberrant tissue homeostasis and adverse outcomes on the other. Both microbial-related and sterile inflammation is a complex response characterized by a range of innate immune cell types, which produce and respond ...
Michael, Stella   +3 more
openaire   +3 more sources

Elliptic Fourier analysis of crown shapes in Quercus petraea trees [PDF]

open access: yesAnnals of Forest Research, 2011
Shape is a fundamental morphological descriptor, significant in taxonomic research as well as in ecomorphology, one method of estimation being from digitally processed images. In the present study, were analysed shapes of Q. petraea crowns, pertaining to
Ovidiu Hâruţa
doaj   +3 more sources

Keeping the Epidermal Stem Cell Niche in Shape [PDF]

open access: yesCell Stem Cell, 2010
Recently in Nature Cell Biology,Connelly et al. (2010) identified biomechanical sensing mechanisms that link the physical shape of the stem cell microenvironment to epithelial stem cell fate decisions. Ultimately, the integration of extrinsic and intrinsic signals controls stem cell self-renewal or differentiation.
Iglesias-Bartolome, Ramiro   +1 more
openaire   +2 more sources

Automatic tree stem detection – a geometric feature based approach for MLS point clouds [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Recognition of tree stem is a fundamental task for obtaining various geometric attributes of trees such as diameter, height, stem position and so on for diverse of urban application.
N. Hetti Arachchige
doaj   +1 more source

Epigenetic Regulation Shapes the Stem Cells State [PDF]

open access: yesStem Cells International, 2016
Pluripotent stem cells are endowed with the dual capacity to self-renew and to differentiate towards all lineages. Genetic and genome-wide studies in different model organisms have provided compelling evidence for the importance of epigenetic factors both in the maintenance of pluripotency and in the establishment of cell lineage commitment, during ...
Caretti G   +4 more
openaire   +5 more sources

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