Results 91 to 100 of about 1,042,145 (277)

Charging of Aggregate Grains in Astrophysical Environments

open access: yes, 2013
The charging of dust grains in astrophysical environments has been investigated with the assumption these grains are homogeneous spheres. However, there is evidence which suggests many grains in astrophysical environments are irregularly-shaped ...
Hyde, Truell   +3 more
core   +1 more source

On the Impact Energy Absorption of an Advanced High‐Strength Bilayer Steel Composite Consisting of Carbide‐Free Bainitic Steel and High‐Mn Twinning‐Induced Plasticity Steel

open access: yesAdvanced Engineering Materials, EarlyView.
Excellent combinations of strength and impact toughness are obtained in a bilayer composite of high‐strength carbide‐free bainitic (CFB) steel and high‐ductility twinning‐induced plasticity (TWIP) steel. The composite absorbs energy at small strains when the notch is placed on the TWIP side and at high strains when the notch is placed on the CFB side ...
Kendra Hawke   +5 more
wiley   +1 more source

A comprehensive review of in planta stable transformation strategies

open access: yesPlant Methods
Plant transformation remains a major bottleneck to the improvement of plant science, both on fundamental and practical levels. The recalcitrant nature of most commercial and minor crops to genetic transformation slows scientific progress for a large ...
Jérôme Gélinas Bélanger   +4 more
doaj   +1 more source

Kinematic Segregation of Flowing Grains in Sandpiles

open access: yes, 1998
We study the segregation of granular mixtures in two-dimensional silos using a set of coupled equations for surface flows of grains. We study the thick flow regime, where the grains are segregated in the rolling phase.
Makse, Hernan A.
core   +1 more source

Interstellar grains within interstellar grains

open access: yesThe Astrophysical Journal, 1991
Five interstellar graphite spherules extracted from the Murchison carbonaceous meteorite are studied. The isotopic and elemental compositions of individual particles are investigated with the help of an ion microprobe, and this analysis is augmented with structural studies of ultrathin sections of the grain interiors by transmission electron microscopy.
Thomas J. Bernatowicz   +3 more
openaire   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov   +8 more
wiley   +1 more source

Improved Wheat Growth and Yield by Delayed Leaf Senescence Using Developmentally Regulated Expression of a Cytokinin Biosynthesis Gene

open access: yesFrontiers in Plant Science, 2019
Delaying leaf senescence in plants, especially under water stress conditions, can help to maintain the remobilization of stored nutrients in source–sink relationships, thus leading to improved crop yields. Leaf senescence can be delayed by plant hormones
Sameer Joshi   +7 more
doaj   +1 more source

Barley Weed Control Trial [PDF]

open access: yes, 2017
Demand for local, organic grains has been increasing in recent years as businesses such as flour mills, malt houses, and bakeries have grown and developed business models to include a higher proportion of local ingredients in their products.
Cummings, Erica   +5 more
core   +1 more source

Modelling dust processing and the evolution of grain sizes in the ISM using the method of moments

open access: yes, 2016
Interstellar dust grains do not have a single well-defined origin. Stars are demonstrably dust producers, but also efficient destroyers of cosmic dust. Dust destruction in the ISM is believed to be the result of SN shocks hitting the ambient ISM gas (and
Mattsson, Lars
core   +1 more source

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