Results 31 to 40 of about 76,108 (299)
D-Branes on K3-Fibrations [PDF]
, 1999 B-type D-branes are constructed on two different K3-fibrations over IP_1 using boundary conformal field theory at the rational Gepner points of these models.
Aspinwall +22 more
core +2 more sources
Identifying and Fostering Higher Levels of Geometric Thinking
EURASIA Journal of Mathematics, Science and Technology Education, 2015 Pierre M. Van Hiele created five levels of geometric thinking. We decided to identify the level of geometric thinking in the students in Slovenia, aged 9 to 11 years. The majority of students (60.7 %) are at the transition between the zero (visual) level and the first (descriptive) level of geometric thinking.
Škrbec, Maja, Hodnik, Tatjana
openaire +2 more sources
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Geometric thinking in learning distance and angle
Journal of Physics: Conference Series, 2021 AbstractSolid geometry is an essential science that students should master because students encounter it in the real world. Students’ geometric thinking ability is still low because they have difficulty understanding the concepts. The purpose of this study was to determine the comparison of the achievement and increase in geometric thinking skills of ...
openaire +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Identifying the misconceptions of eighth grade students on geometry skills and the use of Van Hiele theory to improve their geometry skills [PDF]
فصلنامه نوآوریهای آموزشی, 2018 The Van Hiele is a learning model that offers different types of thinking which students experience, when faced with geometric shapes. It includes the stage of visual encounter with the geometric shape, to the formal perception of geometrical proof ...
Vahid Alamiān +2 more
doaj
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source
AAA+ protein unfoldases—the Moirai of the proteome
FEBS Letters, EarlyView.AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley +1 more source
Intuition beyond the law of the state
Utrecht Law Review, 2011 This article examines one aspect of the possible influence of Aristotle on Spinoza's thinking of state laws and their limitations. In the Nicomachean Ethics, the Stagirite sets out a theory of the just city based on appropriate geometrical proportioning
Stephen Connelly
doaj +1 more source