Results 91 to 100 of about 6,369,178 (336)
Demonstration of negative group delays in a simple electronic circuit
, 2002 We present a simple electronic circuit which produces negative group delays for base-band pulses. When a band-limited pulse is applied as the input, a forwarded pulse appears at the output.
Kitano, M., Nakanishi, T., Sugiyama, K.
core +1 more source
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source
A WZW model based on a non-semi-simple group
, 1993 We present a conformal field theory which desribes a homogeneous four dimensional Lorentz-signature space-time. The model is an ungauged WZW model based on a central extension of the Poincar\'e algebra.
A. A. Tseytlin +11 more
core +1 more source
On Multicommutators for Simple Algebraic Groups
Journal of Algebra, 2001 Let \(G\) be a group and \([G,G]\) its commutator subgroup. The authors are interested in the following question: Given an \(n\)-tuple of commutators \([a_i,b_i]\), when is it possible to write \([a_i,b_i]=[g,g_i]\) using the same \(g\in G\) for all \(i\)? Let \(\Phi_n\) be a mapping of \(G\times G^n\) into \(G^n\) such that \(\Phi_n(g,g_1,\dots,g_n)=([
Gordeev, N, Rehmann, Ulf
openaire +4 more sources
FEBS Letters, EarlyView.Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer +7 more
wiley +1 more source
Composite Higgs and leptoquarks from a simple group
Journal of High Energy Physics, 2019 We propose a composite grand unified theory to study the anomalies in the semileptonic B decays. We show a simple group containing the custodial and Standard Model gauge symmetries, that can deliver a set of composite pseudo Nambu-Goldstone bosons: the ...
Leandro Da Rold, Federico Lamagna
doaj +1 more source
Zero-loci of Brauer group elements on semi-simple algebraic groups
, 2018 We consider the problem of counting the number of rational points of bounded height in the zero-loci of Brauer group elements on semi-simple algebraic groups over number fields.
Loughran, Daniel +2 more
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The role of fibroblast growth factors in cell and cancer metabolism
FEBS Letters, EarlyView.Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley +1 more source
Sheets of BPS Monopoles and Instantons with Arbitrary Simple Gauge Group
, 1998 We show that the BPS configurations of uniform field strength can be interpreted as those for sheets of infinite number of BPS magnetic monopoles, and found that the number of normalizable zero modes per each magnetic monopole charge is four. We identify
Bak +8 more
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FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source