Results 11 to 20 of about 978,649 (302)

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

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

Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description

open access: yesJournal of Forest Science, 2005
The paper shows a possibility of using Bookstein coordinates for stem shape studies. Bookstein coordinates are simplified to stem shape diameters, for which tests of multidimensional normality, variance-covariance matrix homogeneity, equality of mean ...
M. Křepela, D. Zahradník, J. Sequens
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

Comparison of Norway spruce (Picea abies [L.] Karst.), Scots pine (Pinus sylvestris L.) and European larch (Larix decidua Mill.) stem shape by means of geometrical methods

open access: yesJournal of Forest Science, 2006
In this article the stem shape is compared in three coniferous tree species: Norway spruce, Scots pine and European larch. Stem is investigated by means of geometrical methods.
M. Křepela, R. Petráš
doaj   +1 more source

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

Cathodoluminescence and electron microscopy of red quantum dots used for display applications [PDF]

open access: yes, 2015
Cathodoluminescent imaging of the visible light emitted from quantum dots is reported. The shape and uniformity of individual particles is observed in the STEM electron image and the image of the particles created from their visible light collected ...
Coe-Sullivan, S, Fern, G, Silver, J
core   +1 more source

Mechanical adaptations of cleavers (Galium aparine) [PDF]

open access: yes, 2004
• Background and Aims Cleavers (Galium aparine) is a fast-growing herbaceous annual with a semi-self-supporting, scrambling-ascending growth habit. Mature plants often use upright species for support. It is common in hedgerows and on waste ground. This
Goodman, A. M.
core   +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

Asymmetry of values, indigenous forces, and incumbent success in counterinsurgency: evidence from Chechnya [PDF]

open access: yes, 2014
This article fills the gap in existing scholarship on asymmetric conflict, indigenous forces, and how socio-cultural codes shape the dynamics and outcomes of conflict transformation. Specifically, it identifies three key socio-cultural values commonplace
Aliyev, Huseyn, Souleimanov, Emil A.
core   +1 more source

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