Results 11 to 20 of about 251,641 (259)

Using Reappraisal to Improve Outcomes for STEM Teachers and Students

open access: yesJournal of Cognition, 2023
The many stressors associated with teaching can take a toll, resulting in high levels of burnout among teachers and reduced motivation and academic performance among students.
Lital Daches Cohen   +2 more
doaj   +1 more source

Epithelial Stem Cells: Making, Shaping and Breaking the Niche [PDF]

open access: yes, 2022
AbstractEpithelial stem cells maintain tissues throughout adult life and are tightly regulated by their microenvironmental niche to balance cell production and loss. These stem cells have been studied extensively as signal-receiving cells, responding to cues from other cell types and mechanical stimuli that comprise the niche.
Ferraces-Riegas, Paula   +2 more
openaire   +4 more sources

Effects of Stem Density on Crown Architecture of Scots Pine Trees

open access: yesFrontiers in Plant Science, 2022
Trees adapt to their growing conditions by regulating the sizes of their parts and their relationships. For example, removal or death of adjacent trees increases the growing space and the amount of light received by the remaining trees enabling their ...
Ninni Saarinen   +10 more
doaj   +1 more source

Understanding and Overcoming Immunosuppression Shaped by Cancer Stem Cells

open access: yesCancer Research, 2023
Abstract Use of immunotherapy in recent years has revolutionized cancer treatment for certain types of cancers. However, the broad utility of immunotherapy is limited because there are still many types of cancer that do not respond effectively.
Linheng Li, Roy A. Jensen
openaire   +2 more sources

Point distribution form model for spruce stems (Picea abies [L.] Karst.)

open access: yesJournal of Forest Science, 2002
The paper deals with the construction of a point distribution form model for spruce stems. This model is based on the principal components analysis of variance-covariance matrix formed for the Procrustes residuals.
M. Křepela
doaj   +1 more source

Femoral stem neck geometry determines hip range of motion shape: a computer simulation study

open access: yesBone & Joint Research, 2021
Aims: In computer simulations, the shape of the range of motion (ROM) of a stem with a cylindrical neck design will be a perfect cone. However, many modern stems have rectangular/oval-shaped necks. We hypothesized that the rectangular/oval stem neck will
Aidin Eslam Pour   +5 more
doaj   +1 more source

A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape

open access: yesJournal of Forest Science, 2004
This is a study on the evaluation of stem shape in Scots pine. The experiments were carried out on 430 stems without bark, taken from 30 fully analysed sample trees that grew in 5 different locations in the Czech Republic. Generalized Procrustes analysis
M. Křepela, J. Sequens, D. Zahradník
doaj   +1 more source

An Anatomical Study of the Genus Psephellus (Asteraceae) from Flora of Iran [PDF]

open access: yesتاکسونومی و بیوسیستماتیک, 2017
The present study deals with leaf and stem anatomical survey of 10 species of the genus Psephellus (Asteraceae) from flora of Iran. After collecting and identifying the specimens, leaf and stem cross sections were prepared by hand and best sections were ...
MohammadReza Parishani   +2 more
doaj   +1 more source

Phenotypic diversity of wild Sierra Leonean coffee (Coffea stenophylla) collected from Kenema and Moyamba districts

open access: yesBeverage Plant Research, 2023
Coffee is a major cash and export crop in Sierra Leone and is mainly cultivated in southern and eastern provinces. Kenema, Kailahun, Moyamba, Bo, Pujehun and Kono are major coffee growing districts in the country.
Paul Musa Lahai   +4 more
doaj   +1 more source

Morphological Response of Eight Quercus Species to Simulated Wind Load. [PDF]

open access: yesPLoS ONE, 2016
Leaf shape, including leaf size, leaf dissection index (LDI), and venation distribution, strongly impacts leaf physiology and the forces of momentum exerted on leaves or the canopy under windy conditions.
Tonggui Wu   +4 more
doaj   +1 more source

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