Results 81 to 90 of about 4,574 (204)

Cell expansion-mediated organ growth is affected by mutations in three EXIGUA genes.

open access: yesPLoS ONE, 2012
Organ growth depends on two distinct, yet integrated, processes: cell proliferation and post-mitotic cell expansion. Although the regulatory networks of plant cell proliferation during organ growth have begun to be unveiled, the mechanisms regulating ...
Silvia Rubio-Díaz   +10 more
doaj   +1 more source

Charge regulation: a generalized boundary condition?

open access: yes, 2016
The three most commonly-used boundary conditions for charged colloidal systems are constant charge (insulator), constant potential (conducting electrode) and charge regulation (ionizable groups at the surface).
Andelman, David   +2 more
core   +1 more source

Composition and structure of balsa (Ochroma pyramidale) wood

open access: yesWood Science and Technology, 2015
Balsa, with its low density and relatively high mechanical properties, is frequently used as the core in structural sandwich panels, in applications ranging from wind turbine blades to racing yachts.
Marc Borrega   +3 more
semanticscholar   +1 more source

Dissecting the pathways coordinating patterning and growth by plant boundary domains.

open access: yesPLoS Genetics, 2019
Boundary domains play important roles during morphogenesis in plants and animals, but how they contribute to patterning and growth coordination in plants is not understood. The CUC genes determine the boundary domains in the aerial part of the plants and,
Aude Maugarny-Calès   +8 more
doaj   +1 more source

Rheological aging and rejuvenation in solid friction contacts

open access: yes, 2002
We study the low-velocity (0.1--100 $\mu$m.s$^{-1}$) frictional properties of interfaces between a rough glassy polymers and smooth silanized glass, a configuration which gives direct access to the rheology of the adhesive joints in which shear localizes.
Baumberger, T., Bureau, L., Caroli, C.
core   +1 more source

Efeito da castração no diâmetro da làde borregas Ideal nulíparas

open access: yesBoletim de Indústria Animal, 2013
O diâmetro da fibra constitui a principal característica que contribui para agregar valor à produção comercial de lã. Visando determinar a influência da castração nessa característica, 24 borregas púberes da raça Ideal foram distribuídas aleatoriamente em dois grupos experimentais.
Rafael Herrera Alvarez   +2 more
openaire   +7 more sources

Rebrote en alfalfa-ovillo bajo pastoreo mixto durante el invierno

open access: yesRevista Científica, 2010
El pastoreo mixto puede mejorar la eficiencia de cosecha del forraje al disminuir la competencia intraespecífica. El objetivo del estudio fue describir la respuesta de alfalfa (Medicago sativa L)-ovillo (Dactylis glornerata L.) al aplicar ...
Salvador Raymundo Tablada Aguilar   +3 more
doaj  

Petroleum in the Spanish Iberian Peninsula [PDF]

open access: yes, 2010
The main events of the history of petroleum in Spain are the following: 1) The mining concession of petroleum named El Progreso is the first one in Spain and occurred only seven years after Edwin Drake (1819-1880) drilled the first oil well in ...
Mazadiego Martínez, Luis Felipe   +2 more
core   +1 more source

Anomalous dynamical light scattering in soft glassy gels

open access: yes, 2001
We compute the dynamical structure factor S(q,tau) of an elastic medium where force dipoles appear at random in space and in time, due to `micro-collapses' of the structure. Various regimes are found, depending on the wave vector q and the collapse time.
Bouchaud, J-P, Pitard, E.
core   +1 more source

Motion of a sphere through an aging system [PDF]

open access: yes, 2006
We have investigated the drag on a sphere falling through a clay suspension that has a yield stress and exhibits rheological aging. The drag force increases with both speed and the rest time between preparation of the system and the start of the ...
F. K. Oppong   +3 more
core   +1 more source

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