Results 21 to 30 of about 5,639,932 (358)

An ecophysiological and developmental perspective on variation in vessel diameter.

open access: yesPlant, Cell and Environment, 2017
Variation in xylem vessel diameter is one of the most important parameters when evaluating plant water relations. This review provides a synthesis of the ecophysiological implications of variation in lumen diameter together with a summary of our current ...
U. Hacke   +3 more
semanticscholar   +1 more source

The (a,b,s,t)-diameter of graphs: a particular case of conditional diameter [PDF]

open access: yes, 2006
The conditional diameter of a connected graph $\Gamma=(V,E)$ is defined as follows: given a property ${\cal P}$ of a pair $(\Gamma_1, \Gamma_2)$ of subgraphs of $\Gamma$, the so-called \emph{conditional diameter} or ${\cal P}$-{\em diameter} measures the
Balbuena   +10 more
core   +3 more sources

The influence of phytocoenotic conditions on wood accumulation by stands with the Pseudotsuga menziesii (Mirb.) Franco participation in the western region of Ukraine

open access: yesНаукові праці Лісівничої академії наук України, 2019
Pseudotsuga menziesii, under appropriate cultivation conditions in rich, fresh and moist types of forest growth conditions, is a fast-growing woody species suitable for forest planting. In young stands up to 25-30 years of age, Douglas fir is inferior in
Iurii Debryniuk
doaj   +1 more source

Investigation on growth characteristics of natural hybrids of Populs deltoids Marsh. under climatical conditions of Kermanshah province [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2013
Kermanshah is one of the most important provinces of I.R. Iran for poplar plantation and wood production. Ten natural hybrid clones (half-sib) of P. deltoids 69/55 x P.
Fathali Noori   +4 more
doaj   +1 more source

Augmenting graphs to minimize the diameter [PDF]

open access: yes, 2013
We study the problem of augmenting a weighted graph by inserting edges of bounded total cost while minimizing the diameter of the augmented graph.
A.A. Schoone   +14 more
core   +1 more source

Preliminary study of the influence of red blood cells morphometry on the species determinism of domestic animals [PDF]

open access: yesVeterinary World, 2014
Aim: This survey was realized on cattle, sheep, goats, horses, and dogs, in order to study the influence of three morphometric parameters: the diameter, the circumference and the surface of red blood cells on the determinism of these species. Materials
Nezar Adili, Mohamed Melizi
doaj   +1 more source

Development of measuring system of whispering gallery mode resonances for evaluating a diameter of microsphere

open access: yesNihon Kikai Gakkai ronbunshu, 2019
A sphere is a frequently used shape as a reference of calibration for 3-dimensional measurement instruments because of its isotropic shape. It is demanded to measure the diameter of the reference sphere with high accuracy.
Masaki MICHIHATA   +4 more
doaj   +1 more source

Coordinating Pebble Motion on Graphs, the Diameter of Permutation Groups, and Applications

open access: yesIEEE Annual Symposium on Foundations of Computer Science, 2015
We have obtaincd some results in pebble coordination problems and the diameter of permutation groups.
D. Kornhauser, G. Miller, P. Spirakis
semanticscholar   +1 more source

The diameter of weighted random graphs [PDF]

open access: yes, 2015
In this paper we study the impact of random exponential edge weights on the distances in a random graph and, in particular, on its diameter. Our main result consists of a precise asymptotic expression for the maximal weight of the shortest weight paths ...
Amini, Hamed, Lelarge, Marc
core   +3 more sources

Changes of the glomerular size during the human fetal kidney development [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2006
Introduction. Newborns adaptation on postnatal conditions includes significant morphological and functional renal changes. Every kidney contains a constant number of nephrons, at the end of the nephrogenesis period, which extends from week 8 to 34 of ...
Daković-Bjelaković Marija   +5 more
doaj   +1 more source

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