Results 31 to 40 of about 27,455 (284)

Subcritical crack growth in fibrous materials [PDF]

open access: yes, 2006
We present experiments on the slow growth of a single crack in a fax paper sheet submitted to a constant force $F$. We find that statistically averaged crack growth curves can be described by only two parameters : the mean rupture time $\tau$ and a ...
Barenblatt G. I.   +11 more
core   +5 more sources

Mechanical adaptations of cleavers (Galium aparine) [PDF]

open access: yes, 2004
• Background and Aims Cleavers (Galium aparine) is a fast-growing herbaceous annual with a semi-self-supporting, scrambling-ascending growth habit. Mature plants often use upright species for support. It is common in hedgerows and on waste ground. This
Goodman, A. M.
core   +1 more source

XTH acts at the microfibril-matrix interface during cell elongation [PDF]

open access: yes, 2005
Sulphorhodamine-labelled oligosaccharides of xyloglucan are incorporated into the cell wall of Arabidopsis and tobacco roots, and of cultured Nicotiana tabacum cells by the transglucosylase (XET) action of XTHs.
Fry, S C   +4 more
core   +2 more sources

Physical properties of four ring-porous hardwood species: Influence of wood rays on tangential and radial wood shrinkage [PDF]

open access: yes, 2019
Some relationships between ray proportions, strength and shrinkage properties and basic density in hardwood species were highlighted. A better understanding of their relationships caused by the variation in moisture content in the hygroscopic domain ...
Candelier, Kévin   +4 more
core   +1 more source

Assembly assay identifies a critical region of human fibrillin-1 required for 10-12 nm diameter microfibril biogenesis.

open access: yesPLoS ONE, 2021
The human FBN1 gene encodes fibrillin-1 (FBN1); the main component of the 10-12 nm diameter extracellular matrix microfibrils. Marfan syndrome (MFS) is a common inherited connective tissue disorder, caused by FBN1 mutations.
Sacha A Jensen   +2 more
doaj   +1 more source

USING HOMOGENIZATION AND NANOINDENTATION FOR MICROFIBRIL ANGLE DETERMINATION OF SPRUCE

open access: yesActa Polytechnica CTU Proceedings, 2017
This paper is concerned with the evaluation of microfibril angle of spruce. The microfibril angle is defined as an inclination of microfibrils from the longitudinal axis, the direction of lumens.
Lucie Kucíková   +3 more
doaj   +1 more source

Natural History Note Differential Response To Circularly Polarized Light By The Jewel Scarab Beetle Chrysina Gloriosa [PDF]

open access: yes, 2010
Circularly polarized light is rare in the terrestrial environment, and cuticular reflections from scarab beetles are one of the few natural sources.
Brady, Parrish, Cummings, Molly
core   +1 more source

Significant influence of lignin on axial elastic modulus of poplar wood at low microfibril angles under wet conditions

open access: yesJournal of Experimental Botany, 2019
Wood is extensively used as a construction material. Despite increasing knowledge of its mechanical properties, the contribution of the cell-wall matrix polymers to wood mechanics is still not well understood.
Merve Özparpucu   +5 more
semanticscholar   +1 more source

Structure and spacing of cellulose microfibrils in woody cell walls of dicots [PDF]

open access: yes, 2014
The structure of cellulose microfibrils in situ in wood from the dicotyledonous (hardwood) species cherry and birch, and the vascular tissue from sunflower stems, was examined by wide-angle X-ray and neutron scattering (WAXS and WANS) and small-angle ...
Altaner, Clemens M.   +5 more
core   +1 more source

A Novel Genome-Wide Association Study Approach Using Genotyping by Exome Sequencing Leads to the Identification of a Primary Open Angle Glaucoma Associated Inversion Disrupting ADAMTS17 [PDF]

open access: yes, 2015
Closed breeding populations in the dog in conjunction with advances in gene mapping and sequencing techniques facilitate mapping of autosomal recessive diseases and identification of novel disease-causing variants, often using unorthodox experimental ...
A McKenna   +27 more
core   +3 more sources

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