Results 1 to 10 of about 169,832 (144)
Pollen morphology of Waltheria L. (Malvaceae-Byttnerioideae) from Bahia, Brazil
Acta Botânica Brasílica, 2017 Waltheria encompasses about 60 species distributed in Brazil and Mexico. To improve the palynology of the genus, we analyzed 14 species occurring in the Brazilian State of Bahia.
Cristiano Eduardo Amaral Silveira Júnior +2 more
doaj +2 more sources
Morphology and ultrastructure of Tilioideae pollen: how to differentiate Craigia, Mortoniodendron, and Tilia [PDF]
Botanical StudiesAssigning fossil Tilioideae pollen grains to the extant genera Craigia, Mortoniodendron, and Tilia is difficult. Firstly, the pollen from these genera appears similar when studied only with light microscopy.
Christian Geier +7 more
doaj +2 more sources
Eocene Loranthaceae pollen pushes back divergence ages for major splits in the family. [PDF]
PeerJ, 2017 Grímsson F +4 more
europepmc +3 more sources
Shear Thickening Fluid and Its Application in Impact Protection: A Review
Polymers, 2023 Shear thickening fluid (STF) is a dense colloidal suspension of nanoparticles in a carrier fluid in which the viscosity increases dramatically with a rise in shear rate.
Haiqing Liu +4 more
semanticscholar +1 more source
Plant Communications, 2022 Secondary cell walls (SCWs) in stem cells provide mechanical strength and structural support for growth. SCW thickening varies under different light conditions.
Fangjun Luo +7 more
semanticscholar +1 more source
Pollen morphology of Nothofagus (Nothofagaceae, Fagales) and its phylogenetic significance [PDF]
, 2016 Nothofagaceae (southern beeches) are a relatively small flowering plant family of trees confined to the Southern Hemisphere. The fossil record of the family is abundant and it has been widely used as a test case for the classic hypothesis that Antarctica,
Barreda, Viviana Dora +4 more
core +7 more sources
Frontiers in Medicine, 2021 Background: Diagnosing diaphragm dysfunction in the absence of complete paralysis remains difficult. The aim of the present study was to assess the normal values of the thickness and the inspiratory thickening of both hemidiaphragms as measured by ...
A. Boussuges +6 more
semanticscholar +1 more source
Nanotechnology Reviews, 2021 This study examines the rheological properties of shear thickening fluid (STF) enhanced by additives such as multi-walled carbon nanotubes (MWCNTs), polyvinylpyrrolidone (PVP), and nano-silica (SiO2) at different mass fraction ratios.
Li Sun +4 more
semanticscholar +1 more source
Nature Communications, 2021 Dense suspensions of colloidal or granular particles can display pronounced non-Newtonian behaviour, such as discontinuous shear thickening and shear jamming.
Chiao-Peng Hsu +4 more
semanticscholar +1 more source
Shear Thickening and Jamming of Dense Suspensions: The "Roll" of Friction. [PDF]
Physical Review Letters, 2020 Particle-based simulations of discontinuous shear thickening (DST) and shear jamming (SJ) suspensions are used to study the role of stress-activated constraints, with an emphasis on resistance to gearlike rolling.
Abhinendra Singh +4 more
semanticscholar +1 more source