Results 41 to 50 of about 5,695,707 (294)

Comparative study of some species of the genus Acer L. in the Hirkan flora using dendrochronological methods [PDF]

open access: yesBIO Web of Conferences
Recently, due to global climate change and unregulated human economic activities, biodiversity has significantly degraded, which has led to changes and reductions in the ranges of species.
Agamalieva Aydan Gahraman   +4 more
doaj   +1 more source

Triggering Bimodal Radial Stem Growth in Pinus sylvestris at a Drought-Prone Site by Manipulating Stem Carbon Availability

open access: yesFrontiers in Plant Science, 2021
A bimodal radial growth (RG) pattern, i.e., growth peaks in spring and autumn, was repeatedly found in trees in the Mediterranean regions, where summer drought causes reduction or cessation of cambial activity. In a dry inner Alpine valley of the Eastern
Walter Oberhuber   +2 more
doaj   +1 more source

The radial growth of univalent functions

open access: yesJournal of Computational and Applied Mathematics, 2004
Let \(f(z)= z+ a_2z^2+\cdots\) be a function analytic and univalent in the unit disk, i.e. \(f\) belongs to the well-known class \(S\). Denote by \[ \underline\alpha(\theta)= \liminf_{r\to 1-}\,{\log| f(re^{i\theta}|\over \log(1/(1- r))} \] and \(I(f)= \{\theta\in [0, 2\pi): \underline\alpha(\theta)> 0\}\). It follows from a classical result of \textit{
Anderson, J.M.   +2 more
openaire   +2 more sources

Radial tree-growth modelling with fuzzy regression [PDF]

open access: yesCanadian Journal of Forest Research, 1998
A so-called fuzzy linear regression is used in dendroecology to model empirically tree growth as a function of a bioclimatic index representing the water stress, i.e., the ratio of actual evapotranspiration to potential evapotranspiration. The response function predicts tree growth as (fuzzy) intervals, narrow in the domain where the bioclimatic index
Boreux, Jj   +3 more
openaire   +2 more sources

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

open access: yesFEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana   +3 more
wiley   +1 more source

A Review of Radial Segregation in Crystal Growth during Microgravity

open access: yes, 2006
This review describes radial segregation results from crystal growth experiments in microgravity, together with their corre-sponding theoretical treatments.
Carlberg, Torbjörn,
core   +1 more source

GARLIC (Allium sativum L.) ESSENTIAL OIL AGAINST GROWTH AND AFLATOXIN PRODUCTION OF Aspergillus parasiticus

open access: yesTropical and Subtropical Agroecosystems, 2020
Background: Aspergillus parasiticus is a mold to produce aflatoxins, and growth in maize; the used synthetic fungicides for their inhibition are risk to health and the environment.
Manuel Alejandro Vargas-Ortiz   +4 more
doaj  

Snow Cover and Permafrost Soil Temperature Influence on the Radial Growth of Trees in Central Yakutia [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2012
Analysis of snow cover and permafrost soil temperature regime and their influence on the radial growth of trees in Central Yakutia were carried out. Snow depth and the period of its establishment in the previous year determines the intensity and rate of ...
Anatoly N. Nikolaev, Yuri B. Skachkov
doaj  

In Vitro Effects of Leaf Extracts from Brassica rapa on the Growth of Two Entomopathogenic Fungi

open access: yesJournal of Fungi, 2021
This study aimed to determine the inhibitive or stimulatory effects of leaf extracts from two Brassica rapa subspecies on the hyphal growth of two well-known entomopathogenic fungi, Cordyceps fumosorosea and Beauveria bassiana.
Daniel G. Cerritos-Garcia   +5 more
doaj   +1 more source

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