Results 61 to 70 of about 3,964,850 (349)

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Quantum Omni-Synthesis I: Core Field-Theoretical Framework

Quantum Reports
The Quantum Omni-Synthesis (QOS) framework is inspired by the cosmological constant problem, the dark sector, and the tension that arises when gravity is treated as purely geometrical while quantum fields remain defined on a fixed background.
Stefalo Acha
doaj   +1 more source

Geomagnetic Dipole Changes and Upwelling/Downwelling at the Top of the Earth's Core

Frontiers in Earth Science, 2018
The convective state of the top of Earth's outer core is still under debate. Conflicting evidence from seismology and geomagnetism provides arguments for and against a thick stably stratified layer below the core-mantle boundary.
Ludovic Huguet, Ludovic Huguet, Hagay Amit, Thierry Alboussière   +3 more
doaj   +1 more source

Magnetic Fields in Quasar Cores

The Astrophysical Journal, 1998
Multifrequency polarimetry with the Very Long Baseline Array telescope has revealed absolute Faraday rotation measures (RMs) in excess of 1000 rad m-2 in the central regions of the quasars 3C 273, 3C 279, and 3C 380. Beyond a projected distance of ~20 h-1 pc, however, the jets of all three sources are found to have RM < 100 rad m-2.
openaire   +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 magnetic field in the NGC 2024 FIR 5 dense core [PDF]

, 2010
We used the Submillimeter Array (SMA) to observe the thermal polarized dust emission from the protostellar source NGC 2024 FIR 5. The polarized emission outlines a partial hourglass morphology for the plane-of-sky component of the core magnetic field ...
Alves, Felipe de O., Girart, Josep M., Lai, Shih-Ping, Rao, Ramprasad, Zhang, Qizhou   +4 more
core   +2 more sources

Perspectives in educating molecular pathologists on liquid biopsy: Toward integrative, equitable, and decentralized precision oncology

Molecular Oncology, EarlyView.
Liquid biopsy enables minimally invasive, real‐time molecular profiling through analysis of circulating biomarkers in biological fluids. This Perspective highlights the importance of training pathologists through integrative educational programs, such as the European Masters in Molecular Pathology, to ensure effective and equitable implementation of ...
Marius Ilié, Umberto Malapelle, Catherine Alix‐Panabières, Claus Lindbjerg Andersen, Sandra Chlebowski, Vivien Lake, Caroline Lacoux, Virginie Lespinet‐Fabre, Olivier Bordone, Simon Heeke, Christophe Bontoux, Ellen Heitzer, Klaus Pantel, Paul Hofman   +13 more
wiley   +1 more source

Field-theory for reaction-diffusion processes with hard-core particles

, 2000
We show how to build up a systematic bosonic field-theory for a general reaction-diffusion process involving hard-core particles in arbitrary dimension. We criticize a recent approach proposed by Park, Kim and Park (Phys. Rev. E 62 (2000)).
van Wijland, F.
core   +2 more sources

No-core shell model in an effective-field-theory framework [PDF]

, 2006
We present a new approach to the construction of effective interactions suitable for many-body calculations by means of the no-core shell model (NCSM). We consider an effective field theory (EFT) with only nucleon fields directly in the NCSM model spaces.
Ajzenberg-Selove, B.R. Barrett, Barrett, Barrett, Bedaque, Bedaque, Bedaque, Braaten, Carlson, Carlson, Chen, Gegelia, Haxton, I. Stetcu, Kaplan, Kaplan, Lee, Lee, Müller, Navrátil, Navrátil, Navrátil, Navrátil, Navrátil, Nogga, Platter, Platter, Seki, Stetcu, Stetcu, Tilley, U. van Kolck, van Kolck, van Kolck, Vary, Wildenthal, Zheng   +36 more
core   +2 more sources

Magnetic Fields in Molecular Cloud Cores [PDF]

Symposium - International Astronomical Union, 1990
Strong circular polarization of OH masers at 1665 and 1667 MHz lines has been observed towards the molecular cloud cores associated with HII regions. Magnetic field strengths of a few mG are derived from the Zeeman splitting of OH lines. For instance, a magnetic field of about 4 mG in the masing region of W3(OH) has been estimated by OH-line Zeeman ...
Z.P. Zhou, X.W. Zheng
openaire   +1 more source