Results 31 to 40 of about 1,057,647 (300)

Stratification Instability in Granular Flows

open access: yes, 1998
When a mixture of two kinds of grains differing in size and shape is poured in a vertical two-dimensional cell, the mixture spontaneously stratifies in alternating layers of small and large grains, whenever the large grains are more faceted than the ...
A. Mehta   +29 more
core   +1 more source

Experimental study of shear rate dependence in perpetually sheared granular matter

open access: yesEPJ Web of Conferences, 2017
We study the shear behaviour of various granular materials by conducting novel perpetual simple shear experiments over four orders of magnitude of relatively low shear rates. The newly developed experimental apparatus employed is called “3D Stadium Shear
Liu Sophie Yang   +4 more
doaj   +1 more source

Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N [PDF]

open access: yes, 2015
Carbon-rich grains with isotopic anomalies compared to the Sun are found in primitive meteorites. They were made by stars, and carry the original stellar nucleosynthesis signature.
Fryer, C.   +9 more
core   +3 more sources

How granular vortices can help understanding rheological and mixing properties of dense granular flows

open access: yesEPJ Web of Conferences, 2017
Dense granular flows exhibit fascinating kinematic patterns characterised by strong fluctuations in grain velocities. In this paper, we analyse these fluctuations and discuss their possible role on macroscopic properties such as effective viscosity, non ...
Rognon Pierre   +3 more
doaj   +1 more source

Microstructural characterization of a Canadian oil sand [PDF]

open access: yes, 2012
The microstructure of oil sand samples extracted at a depth of 75 m from the estuarine Middle McMurray formation (Alberta, Canada) has been investigated by using high resolution 3D X-Ray microtomography ($\mu$CT) and Cryo Scanning Electron Microscopy ...
Delage, Pierre   +4 more
core   +5 more sources

Derivation and characterization of retinal pigment epithelium from urine‐derived iPSCs

open access: yesFEBS Open Bio, EarlyView.
Age‐related macular degeneration causes vision loss via RPE dysfunction and loss. Traditional iPSC therapies rely on invasive biopsies, limiting scalability. Here, we utilize urine‐derived stem cells as an accessible source to generate u‐iPSCs, successfully differentiated into pigmented RPE. This “Urine‐to‐Retina” platform provides a promising path for
Daniella Beiner   +7 more
wiley   +1 more source

Dissecting Physiological and Agronomic Diversity in Safflower Populations Using Proximal Phenotyping

open access: yesAgriculture, 2023
Safflower (Carthamus tinctorius L.) is a highly adaptable but underutilized oilseed crop capable of growing in marginal environments, with crucial agronomical, commercial, and industrial uses. Considerable research is still needed to develop commercially
Emily Thoday-Kennedy   +7 more
doaj   +1 more source

Artabas of Grain or Artabas of Grains?

open access: yesBulletin of the American Society of Papyrologists, 2014
Survey of the use of the singular and plural with Greek words for grain. The original plural gives way to the singular in the course of the Hellenistic period, but the plural reappears in the later Roman period for barley, whereas wheat, for which σῖτος is then used rather than πυρός, occurs in the singular.
openaire   +2 more sources

Remote Monitoring in Myasthenia Gravis: Exploring Symptom Variability

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare, autoimmune disorder characterized by fluctuating muscle weakness and potential life‐threatening crises. While continuous specialized care is essential, access barriers often delay timely interventions. To address this, we developed MyaLink, a telemedical platform for MG patients.
Maike Stein   +13 more
wiley   +1 more source

Association of Seedling Vigour and Salinity Tolerance in Field Pea

open access: yesPlants
Soil salinity results in reduced productivity in field peas, making soil salinity tolerance a critical breeding objective. In this study, four pot experiments were carried out in semi-controlled environments over four consecutive years to assess the ...
Babu R. Pandey   +4 more
doaj   +1 more source

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