Results 31 to 40 of about 3,181 (225)

A new approach on helices in Euclidean n-space [PDF]

open access: yes, 2012
In this work, we give some new characterizations for inclined curves and slant helices in n-dimensional Euclidean space E^{n}. Morever, we consider the pre-characterizations about inclined curves and slant helices and reconfigure ...
Gök, İsmail   +3 more
core   +2 more sources

Slant helices in three dimensional lie groups

open access: yes, 2012
In this paper, we define slant helices in three dimensional Lie Groups with a bi-invariant metric and obtain a characterization of slant helices. Moreover, we give some relations between slant helices and their involutes, spherical images.Comment: 15 ...
Ekmekci, N.   +3 more
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS 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

On some curves with the modified orthogonal frame in Euclidean 3-space

open access: yes, 2018
In this paper, we study helices and the Bertrand curves. We obtain some of the classification results of these curves with respect to the modified orthogonal frame in Euclidean 3 ...
Bukcu, Bahaddin   +3 more
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

On rectifying ruled surfaces

open access: yesKuwait Journal of Science, 2020
In this study, we define general rectifying ruled surfaces in the Euclidean 3-space E^3. We give some characterizations of rectifying ruled surfaces by considering the curvatures of base curve.
Mehmet Önder, Tanju Kahraman
doaj  

Evolutes of plane curves and null curves in Minkowski $3$-space

open access: yes, 2016
We use the isotropic projection of Laguerre geometry in order to establish a correspondence between plane curves and null curves in the Minkowski $3$-space.
Nolasco, Boaventura, Pacheco, Rui
core   +1 more source

A new kind of slant helix in Pseudo-Riemannian Manifolds

open access: yes, 2013
In this paper, we define a new kind of slant helix called f-eikonal V_{n}-slant helix in Pseudo- Riemannian manifolds and give the definition of harmonic curvature functions related to the f-eikonal V_{n}-slant helix in Pseudo- Riemannian manifolds. Moreover, we give some characterizations of f-eikonal V_{n}-slant helix by making use of the harmonic ...
Zıplar, Evren   +2 more
openaire   +2 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Slant helices, Darboux helices and similar curves in dual space D3 [PDF]

open access: yesMathematica Moravica, 2016
In this paper, we give definitions and characterizations of slant helices, normalized Darboux helices and similar curves in dual space D3. First, we define dual slant helices and dual normalized Darboux helices and show that dual slant helices are also ...
Sahiner Burak, Önder Mehmet
doaj  

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