Results 31 to 40 of about 1,809,946 (329)

The Birth of $E_8$ out of the Spinors of the Icosahedron

open access: yes, 2016
$E_8$ is prominent in mathematics and theoretical physics, and is generally viewed as an exceptional symmetry in an eight-dimensional space very different from the space we inhabit; for instance the Lie group $E_8$ features heavily in ten-dimensional ...
Dechant, Pierre-Philippe
core   +1 more source

Glycome profiling and immunohistochemistry uncover changes in cell walls of Arabidopsis thaliana roots during spaceflight

open access: yesnpj Microgravity, 2023
A large and diverse library of glycan-directed monoclonal antibodies (mAbs) was used to determine if plant cell walls are modified by low-gravity conditions encountered during spaceflight.
Jin Nakashima   +7 more
doaj   +1 more source

Longevity of Aesthetic Fixed Space Maintainers in the Anterior Area of the Pediatric Dental Patient

open access: yesChildren, 2023
Space maintenance for children at very early ages in primary molars or posterior sectors is widely used and the scientific evidence is clear as to its indications.
María Biedma-Perea   +3 more
doaj   +1 more source

Roots of Toeplitz operators on the Bergman space [PDF]

open access: yesPacific Journal of Mathematics, 2011
One of the major questions in the theory of Toeplitz operators on the Bergman space over the unit disk $\mathbb D$ in the complex plane $\mathbb C$ is a complete description of the commutant of a given Toeplitz operator, that is the set of all Toeplitz operators that commute with it.
Louhichi, Issam, Rao, Nagisetty V.
openaire   +3 more sources

Necessary and sufficient conditions for consistent root reconstruction in Markov models on trees

open access: yes, 2019
We establish necessary and sufficient conditions for consistent root reconstruction in continuous-time Markov models with countable state space on bounded-height trees.
Fan, Wai-Tong Louis, Roch, Sebastien
core   +1 more source

Root Tropisms: New Insights Leading the Growth Direction of the Hidden Half

open access: yesPlants, 2021
Tropisms are essential responses of plants, orienting growth according to a wide range of stimuli. Recently, considerable attention has been paid to root tropisms, not only to improve cultivation systems, such as those developed for plant-based life ...
Luigi Gennaro Izzo, Giovanna Aronne
doaj   +1 more source

A geometric characterization of the classical Lie algebras [PDF]

open access: yes, 2017
A nonzero element x in a Lie algebra g over a field F with Lie product [ , ] is called a extremal element if [x, [x, g]] is contained in Fx. Long root elements in classical Lie algebras are examples of extremal elements. Arjeh Cohen et al.
Cuypers, Hans, Fleischmann, Yael
core   +2 more sources

Sense of space: Tactile sense for exploratory behavior of roots

open access: yesCommunicative & Integrative Biology, 2018
In soil, plant roots grow in heterogeneous environments. Plant roots are always facing the difficulty of searching effectively the patchy natural resources, such as water, oxygen, ions and mineral nutrition.
Ken Yokawa, František Baluška
doaj   +1 more source

Can intra-radicular cleaning protocols increase the retention of fiberglass posts? A systematic review

open access: yesBrazilian Oral Research, 2018
The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts (FGPs).
Lilian Vieira OLIVEIRA   +5 more
doaj   +1 more source

Exploring Preferences for a Digital Single‐Session Intervention for Adolescent Siblings of Youth With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Adolescent siblings of children with cancer are at elevated risk for psychosocial problems. Unfortunately, various barriers such as limited family time and resources, conflicting schedules, and psychosocial staffing constraints at cancer centers hinder sibling access to support.
Christina M. Amaro   +10 more
wiley   +1 more source

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