Results 61 to 70 of about 4,049,670 (304)

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

Three-dimensional spectral analysis of gravity waves from airglow observations over Northwest China

Earth and Planetary Physics
The three-dimensional spectral analysis method was applied to airglow data from September 2023 to August 2024 derived from an OH airglow imager located at the Hejing station (42.79°N, 83.73°E) to study the propagation characteristics of gravity waves ...
QinZeng Li, JiYao Xu, Wei Yuan, Xiao Liu, YaJun Zhu, WeiJun Liu   +5 more
doaj   +1 more source

Johnson Space Center software reuse activity [PDF]

There is a strong operational interest in reuse and commonality at the Johnson Space Center (JSC). Although commonality and reuse were not emphasized in the Space Shuttle Orbiter Project, it is a major goal for Space Station Freedom and the Software ...
Gorman, Steve
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

ISNet: Decomposed Dynamic Spatio‐Temporal Neural Network for Ionospheric Scintillation Forecasts

Space Weather
Accurate prediction of ionospheric scintillation is essential for ensuring the reliability of spaceborne and ground‐based radio wave technology infrastructures, including but not limited to navigation and communication systems.
Zhixu Gao, Yanhong Chen, Xianzhi Ao, Fulu Yue, Hong Chen, Hao Deng, Bingxian Luo, Xin Wang, Tianjiao Yuan   +8 more
doaj   +1 more source

Cool Stars and Space Weather

, 2014
Stellar flares, winds and coronal mass ejections form the space weather. They are signatures of the magnetic activity of cool stars and, since activity varies with age, mass and rotation, the space weather that extra-solar planets experience can be very ...
Alvarado, J., Cameron, A. C., Cohen, O., Holzwarth, V., Jardine, M., Morin, J., Poppenhaeger, K., Reville, V., Saar, S., Vidotto, A. A., Villadsen, J.   +10 more
core  

Public Space: Activation v. De-Activation

New Instrumentalities, 2018
Historically, the great cities of the world have built public spaces that have often been used as venues for spectacle, and displays of power and status. These public venues are part of the identity of these cities and have an importance and influence far beyond their physical dimensions or geometric shapes.
Clifton C. Ellis, David J. Isern
openaire   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Observations of the Magnetopause Reconnection Ion Diffusion Region With High‐Density O+ Ions During the May 2024 Superstorm

Geophysical Research Letters
Based on high‐resolution measurements from NASA's Magnetospheric Multiscale mission (MMS), we present the first direct observation of an ion diffusion region (IDR) with high number density O+ ions within dayside magnetopause reconnection during the May ...
Anxin Zhang, Suping Duan, Lei Dai, Yuntian Hou, Yong Ren, Chi Wang, S. A. Fuselier, C. Philippe Escoubet, James L. Burch   +8 more
doaj   +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