Results 91 to 100 of about 55,578 (283)

Transversal designs and partitions associated with Frobenius groups.

Journal für die reine und angewandte Mathematik (Crelles Journal), 1985
A transversal design (dual net) is a finite incidence structure \({\mathcal F}\) admitting a partition of the point set into classes such that (i) any two points of different classes are joined by a unique block (ii) any two points of the same class are not joined by a block and (iii) each block meets each point class.
openaire   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Problems on q-Analogs in Coding Theory [PDF]

, 2013
The interest in $q$-analogs of codes and designs has been increased in the last few years as a consequence of their new application in error-correction for random network coding. There are many interesting theoretical, algebraic, and combinatorial coding
Etzion, Tuvi
core  

Infinitely many cyclic solutions to the Hamilton-Waterloo problem with odd length cycles

, 2016
It is conjectured that for every pair $(\ell,m)$ of odd integers greater than 2 with $m \equiv 1\; \pmod{\ell}$, there exists a cyclic two-factorization of $K_{\ell m}$ having exactly $(m-1)/2$ factors of type $\ell^m$ and all the others of type $m^{\ell}
Merola, Francesca, Traetta, Tommaso
core   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Designs from Local Random Quantum Circuits with SU(d) Symmetry

PRX Quantum
The generation of k-designs (pseudorandom distributions that emulate the Haar measure up to k moments) with local quantum circuit ensembles is a problem of fundamental importance in quantum information and physics.
Zimu Li, Han Zheng, Junyu Liu, Liang Jiang, Zi-Wen Liu   +4 more
doaj   +1 more source

On the comparison between compound louvered-vortex generator fins and X-shaped louvered fins [PDF]

, 2013
A recent evolution in heat exchanger design is the use of compound designs. One of the designs under study is a combination between a louvered fin and vortex generators. Several possible placements of the vortex generators are studied.
Ameel, Bernd, De Paepe, Michel, Degroote, Joris, Huisseune, Henk   +3 more
core   +1 more source

Multilayer transverse gradient coil design

Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering, 2003
AbstractIn small, cylindrical gradient coils consisting of a single layer of wires, the limiting factor in achieving large magnetic field gradients is the rapid increase in coil resistance with efficiency. This behavior results from the decrease in the maximum usable wire diameter as the number of turns is increased.
Leggett, J., Crozier, S., Blackband, S., Beck, B., Bowtell, R. W.   +4 more
openaire   +3 more sources

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source