Results 11 to 20 of about 11,041,440 (317)

K-functionals for Besov spaces

Journal of Approximation Theory, 1991
Let \(X_ 0\), \(X_ 1\) be a pair of quasi-normed spaces, which are continuously embedded in a Hausdorff space \(X\); their \(K\)-functional, defined for all \(f\in X_ 0+X_ 1\) is \[ K(f,t):=\inf_{f=f_ 0+f_ 1}(\| f_ 0\|_{X_ 0}+t\| f_ 1\| _{X_ 1}). \] In particular, these functionals provide some information about interpolation spaces generated by \(X_ 0\
DeVore, Ronald A, Yu, Xiang Ming
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While K-ras is essential for mouse development, expression of the K-ras 4A splice variant is dispensable [PDF]

, 2003
In mammals, the three classical ras genes encode four highly homologous proteins, N-Ras, H-Ras, and the isoforms K-Ras 4A and 4B. Previous studies have shown that K-ras is essential for mouse development and that while K-ras 4A and 4B are expressed ...
Patek, C. E., Ann-Marie Ritchie, Melton, D. W., Doig, Jennifer, Arends, Mark J, D James Williamson, Charles E Patek, Arends, M. J., Ritchie, A. M., Plowman, Sarah J, Williamson, D James, Maureen J O'sullivan, Ritchie, Ann-Marie, Melton, David W, Sarah J Plowman, Hooper, Martin L, David W Melton, Harrison, David J, Arends, Mark J; id_orcid, O'Sullivan, M. J., Harrison, D. J., Hooper, M. L., Plowman, S. J., David J Harrison, O'Sullivan, Maureen J, Jennifer Doig, Doig, J., Martin L Hooper, Patek, Charles E, Mark J Arends, Williamson, D. J.   +30 more
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Regions of KCNQ K+ Channels Controlling Functional Expression

Frontiers in Physiology, 2012
KCNQ1-5 α-subunits assemble to form K+ channels that play critical roles in the function of numerous tissues. The channels are tetramers of subunits containing six transmembrane domains.
Frank eChoveau, Mark S Shapiro
doaj   +1 more source

On the K functional between L1 and L2 and some other K functionals

Journal of Approximation Theory, 1986
An explicit formula for the K-functional between \(L^ 1\) and \(L^ 2\) is given. It was suggested by and contains as a special case the Valiron- Landau lemma in function theory [see \textit{P. Duren}, Univalent functions (1983; Zbl 0514.30001), pp. 104-105]. (The preface contains also an anecdote about G.
Nilsson, Per, Peetre, Jaak
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Structural and Functional Analysis of the Cdk13/Cyclin K Complex

Cell Reports, 2016
Cyclin-dependent kinases regulate the cell cycle and transcription in higher eukaryotes. We have determined the crystal structure of the transcription kinase Cdk13 and its Cyclin K subunit at 2.0 Å resolution.
Ann Katrin Greifenberg, Dana Hönig, Kveta Pilarova, Robert Düster, Koen Bartholomeeusen, Christian A. Bösken, Kanchan Anand, Dalibor Blazek, Matthias Geyer   +8 more
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Comprehensive–Comparative study of fracture distal end radius with plating and K-Wire fixation

Journal of Orthopaedic Diseases and Traumatology, 2021
Introduction: Distal end radius fracture is a common fracture seen in the routine orthopedic outpatient department. The optimal management of distal radius fractures remains controversial.
Randir Kumar, Nand Kumar, Ashutosh Kumar
doaj   +1 more source

A Functional K+ Channel from Tetraselmis Virus 1, a Member of the Mimiviridae. [PDF]

, 2020
Potassium ion (K) channels have been observed in diverse viruses that infect eukaryotic marine and freshwater algae. However, experimental evidence for functional K channels among these alga-infecting viruses has thus far been restricted to members of ...
Kukovetz K., Schvarcz, Christopher R., Thiel, Gerhard, Hertel B., Saponaro A., Mirja Manthey, van Etten J. L., Anna Moroni, Saponaro, Andrea, Grieg F. Steward, Gerhard Thiel, Etten, James L. van, Kerri Kukovetz, Burk U., Steward G. F., Moroni A., Rauh O., James L. Van Etten, Kukovetz, Kerri, Brigitte Hertel, Steward, Grieg F., Greiner, Timo, Manthey, Mirja, Burk, Ulrike, Manthey M., Christopher R. Schvarcz, Moroni, Anna, Timo Greiner, Hertel, Brigitte, Ulrike Burk, Thiel G., Andrea Saponaro, Rauh, Oliver, Schvarcz C. R., Oliver Rauh, Greiner T., Van Etten, James L.   +36 more
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Functional roles of heterogeneous nuclear ribonucleoprotein K in post-transcriptional gene regulation [PDF]

Precision and Future Medicine, 2018
Since it is widely accepted that the accumulation of genetic alterations is the main cause of cancer, understanding how cancer-associated genes are regulated is crucial to the development of cancertherapies. As one of important RNA-binding proteins (RBPs)
Chang Hoon Shin, Hyeon Ho Kim
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Boosting BOLD fMRI by K-Space density weighted echo planar imaging [PDF]

, 2013
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar
Andreas J Bartsch, Zeller, Mario, Nichols, Thomas, Hahn, Dietbert, Müller, Alexander, Mario Zeller, Herbert Köstler, Nichols, Thomas E., Thomas Nichols, Köstler, Herbert, Dietbert Hahn, Marcel Gutberlet, Alexander Müller, Gutberlet, Marcel, Bartsch, Andreas J.   +14 more
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General Holmstedt’s Formulae for the K-Functional

Journal of Function Spaces, 2017
Explicit formulae for the K-functional for the general couple ((A0,A1)Φ0,(A0,A1)Φ1), where (A0,A1) is a compatible couple of quasi-normed spaces, are proved. As a consequence, the corresponding reiteration theorems are derived.
Irshaad Ahmed, Georgi E. Karadzhov, Ali Raza   +2 more
doaj   +1 more source