Results 31 to 40 of about 8,544 (255)

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

Inelastic behaviour of cellulose microfibril networks

open access: yesSoft Matter, 2018
Weak physical interactions between cellulose microfibrils play an important role in shaping the nonlinear rheological behaviour of their networks.
Srivatssan Mohan   +2 more
openaire   +5 more sources

Alteration of In Vivo Cellulose Ribbon Assembly by Carboxymethylcellulose and Other Cellulose Derivatives [PDF]

open access: yes, 1982
In vivo cellulose ribbon assembly by the Gram-negative bacterium Acetobacter xylinum can be altered by incubation in carboxymethylcellulose (CMC), a negatively charged water-soluble cellulose derivative, and also by incubation in a variety of neutral ...
Brown, R. Malcolm Jr   +3 more
core   +2 more sources

THE SIZE OF THE CELLULOSE MICROFIBRIL [PDF]

open access: yesThe Journal of Cell Biology, 1963
Recently the lateral width of the cellulose microfibril has been estimated as 30 A rather than about 150 to 200 A, by extrapolation of data from model shadowing experiments. The difference was attributed to a layer of metal deposited during shadowing.
openaire   +2 more sources

Slow dynamics in a model of the cellulose network [PDF]

open access: yes, 2007
We present numerical simulations of a model of cellulose consisting of long stiff rods, representing cellulose microfibrils, connected by stretchable crosslinks, representing xyloglucan molecules, hydrogen bonded to the microfibrils. Within a broad range
Fasolino, A.   +2 more
core   +3 more sources

Comparative studies on wood structure and microtensile properties between compression and opposite wood fibers of Chinese fir plantation

open access: yesJournal of Wood Science, 2021
The microtensile properties of mechanically isolated compression wood (CW) and opposite wood (OW) tracheids of Chinese fir (Cunninghamia lanceolata) were investigated and discussed with respect to their structure. Major differences in the tensile modulus
Zhu Li   +5 more
doaj   +1 more source

Production of Cellulose Microfibrils by Rhizobium [PDF]

open access: yesApplied Microbiology, 1975
Electron microscope examination of Rhizobium spp. revealed microfibrils produced by flocculating strains but not by nonflocculating strains. The microfibrils from R. trifolii (NA30) were isolated and identified as cellulose by enzymatic, X-ray diffraction, and infrared spectral analyses. Both
C, Napoli, F, Dazzo, D, Hubbell
openaire   +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

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

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