Results 31 to 40 of about 33,865 (256)

Lightweight S-Box Architecture for Secure Internet of Things

Information, 2018
Lightweight cryptographic solutions are required to guarantee the security of Internet of Things (IoT) pervasiveness. Cryptographic primitives mandate a non-linear operation.
A. Prathiba, V. S. Kanchana Bhaaskaran
doaj   +1 more source

Evolutionary models for insertions and deletions in a probabilistic modeling framework

BMC Bioinformatics, 2005
Background Probabilistic models for sequence comparison (such as hidden Markov models and pair hidden Markov models for proteins and mRNAs, or their context-free grammar counterparts for structural RNAs) often assume a fixed degree of divergence. Ideally
Rivas Elena
doaj   +1 more source

The principle of equivalence and projective structure in space-times [PDF]

, 2007
This paper discusses the extent to which one can determine the space-time metric from a knowledge of a certain subset of the (unparametrised) geodesics of its Levi-Civita connection, that is, from the experimental evidence of the equivalence principle ...
Bel L, D P Lonie, Eisenhart L P, G S Hall, Hall G S, Hall G S, Hall G S, Hall G S, Hall G S, Hall G S Bokan N, Petrov A Z, Schouten J A, Stephani H, Thomas T Y, Weyl H   +14 more
core   +2 more sources

Estrogen receptor has enhanced affinity for bromodeoxyuridine-substituted DNA. [PDF]

Proceedings of the National Academy of Sciences, 1978
The estrogen receptor (E2R) from rabbit uterus has an enhanced affinity for BrdUrd-substituted DNA compared to unsubstituted DNA. Increasing levels of BrdUrd substitution (from 0 to 100%) in a DNA sample are associated with increasingly tighter binding of E2R to that DNA as measured by equilibrium competition experiments and by rates of dissociation ...
J, Kallos, T M, Fasy, V P, Hollander, M D, Bick   +3 more
openaire   +2 more sources

The Hamiltonian of Einstein affine-metric formulation of General Relativity

, 2009
It is shown that the Hamiltonian of the Einstein affine-metric (first order) formulation of General Relativity (GR) leads to a constraint structure that allows the restoration of its unique gauge invariance, four-diffeomorphism, without the need of any ...
A. Einstein, A. Einstein, A. Palatini, A. Palatini, A.M. Frolov, B.S. DeWitt, C. Lanczos, C. Rovelli, C. Rovelli, C. Teitelboim, C. Teitelboim, C. Teitelboim, C. Teitelboim, C.J. Isham, D.G.C. McKeon, D.M. Gitman, E. Witten, F.A.E. Pirani, H. Nicolai, I.A. Nicolić, J. Gomis, J. Gomis, J. Kijowski, J. Pullin, J. Pullin, J. Schwinger, J.A. Wheeler, J.A. Wheeler, J.L. Anderson, J.M. Pons, J.M. Pons, K. Kuchar, K. Sundermeyer, L. Castellani, L. Castellani, L.P. Faddeev, L.P. Faddeev, M. Bañados, M. Ferraris, M. Han, M. Henneaux, M. Henneaux, M. Henneaux, M.O. Katanaev, N. Kiriushcheva, N. Kiriushcheva, N. Kiriushcheva, N. Kiriushcheva, N. Kiriushcheva, N. Kiriushcheva, N.P. Landsman, P. Horava, P. Mukherjee, P. Peldán, P.A.M. Dirac, P.A.M. Dirac, P.A.M. Dirac, P.A.M. Dirac, R. Arnowitt, R. Arnowitt, R. Arnowitt, R. Banerjee, R. Banerjee, R. Stefano Di, S. Samanta, S. V. Kuzmin, S.-D. Poisson, S.V. Kuzmin, S.W. Hawking, T. Jacobson, T. Thiemann, T. Thiemann, V.A. Franke, V.A. Franke   +73 more
core   +1 more source

A Large k Asymptotics of Witten's Invariant of Seifert Manifolds

, 1993
We calculate a large $k$ asymptotic expansion of the exact surgery formula for Witten's $SU(2)$ invariant of Seifert manifolds. The contributions of all flat connections are identified. An agreement with the 1-loop formula is checked.
C. Lescop, D. Freed, D. Freed, E. Guadagnini, E. Witten, L. Alvarez-Gaumé, L. Jeffrey, L. Rozansky, L. Rozansky, N. Reshetikhin, P. Bouwknegt, R. Fintushel, S. Elitzur   +12 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Self-adaptive encryption algorithm for image based on affine and composed chaos

Tongxin xuebao, 2012
On the basis of three-dimensional affine transformation in limited integer domain and composed chaos,a novel digital image encryption algorithm was proposed.Firstly,it scrambled pixels’ position and confused pixels’ value according to corresponding ...
Chang-ci WEN, Qin WANG, Fu-min HUANG, Zhi-shu YUAN, Chun-sheng TAO   +4 more
doaj   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

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, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source