Results 71 to 80 of about 3,531,325 (349)

Retention of Atmospheric Particles by Local Plant Leaves in the Mount Wutai Scenic Area, China

open access: yesAtmosphere, 2016
To evaluate the characteristics of atmospheric particle retention by plant leaves during the tourism season in Buddhism-based scenic areas, plants distributed in the core area of the Mount Wutai scenic area were selected for study: Populus davidiana (Po.
Shuai Shi   +3 more
doaj   +1 more source

Topology of leaves of generic logarithmic foliations on $\mathbb{CP}^2$ [PDF]

open access: yesarXiv, 2019
We describe the topological types of leaves of generic logarithmic foliations on the complex projective plane. We prove that all leaves, except for a finite many are biholomorphic to $\mathbb{C}$ or homeomorphic to the surface known as Loch Ness monster.
arxiv  

Protonophore activity of short‐chain fatty acids induces their intracellular accumulation and acidification

open access: yesFEBS Letters, EarlyView.
The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang   +2 more
wiley   +1 more source

Eliciting Polyphenols in Strawberry Leaves: Preliminary Experiments in Fragaria × ananassa cv. Festival

open access: yesMolecules
Polyphenols are plant secondary metabolites that function mostly as a general stress-induced protective mechanism. Polyphenols have also gained interest due to their beneficial properties for human health.
Karla Salas-Arias   +6 more
doaj   +1 more source

Ultrastructural changes in chloroplasts of mesophyll cells of chlorotic and prematurely yellowed leaves of Betula pendula Rothr

open access: yesActa Societatis Botanicorum Poloniae, 2011
The ultrastructure of chloroplasts was studied in mesophyll cells of the leaves of silver birch (Betula pendula) showing interveinal chlorosis or premature yellowing, in comparison with leaves without symptoms or exhibiting symptoms of natural senescence.
Krystyna Przybył, Krystyna Idzikowska
doaj   +1 more source

Excess Copper-Induced Alterations of Protein Profiles and Related Physiological Parameters in Citrus Leaves

open access: yesPlants, 2020
This present study examined excess copper (Cu) effects on seedling growth, leaf Cu concentration, gas exchange, and protein profiles identified by a two-dimensional electrophoresis (2-DE) based mass spectrometry (MS) approach after Citrus sinensis and ...
Wei-Lin Huang   +7 more
doaj   +1 more source

A criterion for density of the isoperiodic leaves in rank 1 affine invariant suborbifolds [PDF]

open access: yesarXiv, 2020
We define on any affine invariant orbifold M a foliation FM that generalises the isoperiodic foliation on strata of the moduli space of translation surfaces and study the dynamics of its leaves in the rank 1 case. We establish a criterion that ensures the density of the leaves and provide two applications of this criterion.
arxiv  

Variegation of Leaves [PDF]

open access: yesScientific American, 1880
n ...
openaire   +2 more sources

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

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