Results 11 to 20 of about 4,300 (261)
An Extended Winged Helix Domain in General Transcription Factor E/IIEα [PDF]
Journal of Biological Chemistry, 2003 Initiation of eukaryotic mRNA transcription requires melting of promoter DNA with the help of the general transcription factors TFIIE and TFIIH. Here we define a conserved and functionally essential N-terminal domain in TFE, the archaeal homolog of the large TFIIE subunit alpha.
Meinhart, A., Blobel, J., Cramer, P.
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Mathematics, 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
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New results for general helix in Euclidean 3-space
AIP Conference Proceedings, 2018 Finding parametric equation of a space curve is not easy task when its curvature functions are given. It is well known that this problem is known as fundamental theorem of a space curve. If the curvature functions are functions of arc-length, the solution of this problem is usually impossible.
Ilarslan, Kazim, Kazım İlarslan
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An Alternative Approach to Find the Position Vector of a General Helix
Celal Bayar Üniversitesi Fen Bilimleri DergisiIn this paper, we introduce an alternative approach centered around an alternative moving frame for finding the position vector of a general helix given its curvature and torsion. Our methodology begins by formulating a vector differential equation, leveraging the unit principal normal vector of a general helix with the assistance of the alternative ...
Gizem Güzelkardeşler, Burak Şahiner
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On the Assocıated Curves of a Frenet Curve in R_1^4
Cumhuriyet 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
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The Triple Helix of University-Industry-Government Relations [PDF]
, 2012 Etzkowitz & Leydesdorff (2000) further elaborated the Triple Helix of University-Industry-Government Relations (cf. Etzkowitz & Leydesdorff, 1995; Lowe, 1982) into a model for studying knowledge-based economies.
Leydesdorff, Loet +2 more
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Conjugate mates for non-null Frenet curves
Sakarya 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
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On the generation of Helix aspersa [PDF]
Annals and Magazine of Natural History, 1871 n ...
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CHARACTERIZATION OF THE SLANT HELIX AS SUCCESSOR CURVE OF THE GENERAL HELIX
International 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 ...
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The auto-inhibitory role of the EPAC hinge helix as mapped by NMR. [PDF]
PLoS ONE, 2012 The cyclic-AMP binding domain (CBD) is the central regulatory unit of exchange proteins activated by cAMP (EPAC). The CBD maintains EPAC in a state of auto-inhibition in the absence of the allosteric effector, cAMP.
Rajeevan Selvaratnam +3 more
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