Results 91 to 100 of about 1,459,445 (287)

Characterization of a commercially available large area, high detection efficiency single-photon avalanche diode

, 2013
We characterize a new commercial, back-illuminated reach-through silicon single-photon avalanche photo diode (SPAD) SAP500 (Laser Components. Inc.), operated in Geiger-mode for purpose of photon counting.
Stipčević, Mario, Ursin, Rupert, Wang, Daqing   +2 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

The effects of podiatric deviations on nonspecific chronic low back pain [PDF]

طب کار
Introduction: Low back pain (LBP) is a prevalent, costly, and debilitating issue with a high prevalence in the global community. While acute injuries can cause low back pain, biomechanical disorders have also been identified as contributors to chronic ...
Fariba Moradi, Mansor Sahebozamani, Saeed Bahiraei, Abdolhamid Daneshjoo, Sina Saeedaskari   +4 more
doaj  

Asymptotic rank of spaces with bicombings

, 2015
The question, under what geometric assumptions on a space X an n-quasiflat in X implies the existence of an n-flat therein, has been investigated for a long time.
Descombes, Dominic
core   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Clustering dynamics of Lagrangian tracers in free-surface flows

, 2002
We study the formation of clusters of passive Lagrangian tracers in a non-smooth turbulent flow in a flat free-slip surface as a model for particle dynamics on free surfaces. Single particle and pair dispersion show different behavior for short and large
A. Celani, A. La Porta, A. Pumir, A.L. Rovelstad, B. Eckhardt, B. van Haarlem, B.U. Felderhof, Bruno Eckhardt, D. Elhmaidi, D.H. Porter, E. Balkovsky, G. Boffetta, G. Falkovich, J. Eggers, Jörg Schumacher, K. Gawȩdzki, L.F. Richardson, M. Maxey, M.C. Jullien, N. Mordant, N. Zouari, P.K. Yeung, S. Ott, T. Bohr, T.M. Antonsen, V.I. Klyatskin, W.I. Goldburg   +26 more
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Reinstrumentation for progressive hyper-kyphotic deformity after implant removal despite obtaining physiological alignment by posterior corrective surgery for adolescent idiopathic scoliosis with flat back: a case report. [PDF]

J Surg Case Rep, 2023
Toga A, Fukuda K, Ozaki M, Fujii T, Yonezawa Y.   +4 more
europepmc   +1 more source

Local Unit Invariance, Back-Reacting Tractors and the Cosmological Constant Problem

, 2010
When physics is expressed in a way that is independent of local choices of unit systems, Riemannian geometry is replaced by conformal geometry. Moreover masses become geometric, appearing as Weyl weights of tractors (conformal multiplets of fields ...
A Waldron, Antoniadis I, Bailey T N, Bars I, Bianchi M, Carroll S M, Distler J, Fefferman C, Freedman D Z, Freedman D Z, Girardello L, Gover A R, Gover A R, Henningson M, Higuchi A, J de Boer, Maldacena J M, N Arkani-Hamed, O Corradini, P van Nieuwenhuizen, P van Nieuwenhuizen, Polchinski J, Polyakov A M, Polyakov A M, R Bonezzi, Shaukat A, Thomas T Y, Weinberg S, Weyl H, Witten E, Witten E, Zumino B   +31 more
core   +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