Results 11 to 20 of about 365,940 (292)

On the Assocıated Curves of a Frenet Curve in R_1^4

open access: yesCumhuriyet Science Journal, 2022
In the present work, we have dealt with the properties of associated curves of a Frenet curve in R14. In addition to this, we define principal direction curve, B_1 -direction curve, B_2- direction curve of a given Frenet curve by using integral curves ...
Mehmet Bektaş   +2 more
doaj   +1 more source

NMR analysis of synthetic human serum albumin alpha-helix 28 identifies structural distortion upon amadori modification [PDF]

open access: yes, 2005
The non-enzymatic reaction between reducing sugars and long-lived proteins in vivo results in the formation of glycation and advanced glycation end products, which alter the properties of proteins including charge, helicity, and their tendency to ...
Howard, Mark J.   +1 more
core   +1 more source

Funneled angle landscapes for helical proteins [PDF]

open access: yes, 2020
We use crystallographic data for four helical iron proteins (cytochrome c-b₅₆₂, cytochrome c′, sperm whale myoglobin, human cytoglobin) to calculate radial and angular signatures as each unfolds from the native state stepwise though four unfolded states.
Garza-López, Roberto A.   +2 more
core   +1 more source

Conjugate mates for non-null Frenet curves

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
For each non-null Frenet curve \gamma in Minkowski 3-space, there exists a unique unit speed non-null curve tangentto the principal binormal vector field of \gamma. We briefly call this curve the conjugate mate of\gamma . The aim of thispaper is to prove
Alev Kelleci
doaj   +1 more source

Generalized phantom helix states in quantum spin graphs

open access: yes, 2023
In general, the summation of a set of sub-Hamiltonians cannot share a common eigenstate of each one, only if it is an unentangled product state, such as a phantom helix state in quantum spin system. Here we present a method, referred to as the building block method (BBM), for constructing possible spin-1/2 XXZ Heisenberg lattice systems possessing ...
Zhang, C. H., Shi, Y. B., Song, Z.
openaire   +2 more sources

Stability Analysis of Multi-Discrete Delay Milling with Helix Effects Using a General Order Full-Discretization Method Updated with a Generalized Integral Quadrature

open access: yesMathematics, 2020
A tensor-based general order full-discretization method is enhanced with the capacity to handle multiple discrete delays and helix effects leading to a unique automated algorithm in the stability analysis of milling process chatter.
Chigbogu Ozoegwu, Peter Eberhard
doaj   +1 more source

Bridge helix and trigger loop perturbations generate superactive RNA polymerases [PDF]

open access: yesJournal of Biology, 2008
Abstract Background Cellular RNA polymerases are highly conserved enzymes that undergo complex conformational changes to coordinate the processing of nucleic acid substrates through the active site. Two domains in particular, the bridge helix and the trigger loop, play a key role in this mechanism by ...
Tan, L   +4 more
openaire   +5 more sources

Thin-film flow in helically wound rectangular channels with small torsion [PDF]

open access: yes, 2013
Laminar gravity-driven thin-film flow down a helically-wound channel of rectangular cross-section with small torsion in which the fluid depth is small is considered.
B. R. Duffy   +12 more
core   +1 more source

CHARACTERIZATION OF THE SLANT HELIX AS SUCCESSOR CURVE OF THE GENERAL HELIX

open access: yesInternational Electronic Journal of Geometry, 2014
In classical curve theory, the geometry of a curve in three dimen- sions is essentially characterized by their invariants, curvature and torsion. When they are given, the problem of nding a corresponding curve is known as 'solving natural equations'. Explicit solutions are known only for a handful of curve classes, including notably the plane curves ...
openaire   +5 more sources

General helices that lie on the sphere $S^{2n}$ in Euclidean space $E^{2n+1}$

open access: yesUniversal Journal of Mathematics and Applications, 2018
In this work, we give two methods to generate general helices that lie on the sphere  $S^{2n}$ in Euclidean (2n+1)-space $E^{2n+1}$.
Bülent Altunkaya, Levent Kula
doaj   +1 more source

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