Results 171 to 180 of about 1,859,132 (364)

A Molecularly Defined Medullary Network for Control of Respiratory Homeostasis

open access: yesAdvanced Science, EarlyView.
The dynamic interplay between central respiratory chemoreceptors and the respiratory central pattern generator is essential for maintaining stable respiratory rhythm and patterns, particularly during sleep. This study offers novel insights into the anatomical, molecular, and functional characteristics of a medullary network involving the nucleus ...
Tianjiao Deng   +16 more
wiley   +1 more source

AstroSat View of the Neutron Star Low-mass X-Ray Binary GX 5-1

open access: yesThe Astrophysical Journal
We present the spectral and timing study of the bright neutron star low-mass X-ray binary GX 5-1 using AstroSat/Large Area X-ray Proportional Counter (LAXPC) and Soft X-ray Telescope observations conducted in 2018.
V. P. Shyam Prakash, Vivek K. Agrawal
doaj   +1 more source

Extreme Horizontal Branch Stars

open access: yes, 2008
Proceeding of the meeting" XXI Century Challenges for Stellar Evolution" S. Cassisi & M. Salaris eds., Mem. Soc. Astr. It., Vol. 79, N. 2., in press,
openaire   +2 more sources

Cryo‐EM Analysis of a Tri‐Heme Cytochrome‐Associated RC‐LH1 Complex from the Marine Photoheterotrophic Bacterium Dinoroseobacter Shibae

open access: yesAdvanced Science, EarlyView.
Cryo‐EM reveals a closed 17‐subunit LH ring encircling the RC‐LH1 complex in Dinoroseobacter shibae, featuring a novel helix‐turn‐helix subunit bridging RC and LH. Mg2⁺/Ca2⁺ stabilizes the complex, while periplasmic Cyt c₂ mediates electron transfer via a tri‐heme Cyt to the special pair of bacteriochlorophylls. Insights into energy/electron efficiency
Weiwei Wang   +12 more
wiley   +1 more source

The Number of Planets Around Stars [PDF]

open access: yesarXiv, 1997
Based on the large number of elliptical planetary nebulae I argue that about 55 per cent of all progenitors of planetary nebulae have planets around them. The planets spin up the stars when the later evolve along the red giant branch or along the asymptotic giant branch.
arxiv  

Genome Mining Enabled by Biosynthetic Characterization Uncovers a Class of Benzoxazolinate‐Containing Natural Products in Diverse Bacteria

open access: yesAngewandte Chemie, Volume 134, Issue 51, December 19, 2022., 2022
Benzoxazolinate is a rare bis‐heterocyclic moiety that interacts with proteins and DNA. It was found that a putative acyl AMP‐ligase mediates the last cyclization step to afford benzoxazolinate. The enzyme was then used as a probe for genome mining, which led to the discovery of a new class of benzoxazolinate‐containing compounds in diverse bacteria ...
Yi‐Ming Shi   +12 more
wiley   +2 more sources

Resource-Efficient Acoustic Full-Waveform Inversion via Dual-Branch Physics-Informed RNN with Scale Decomposition

open access: yesApplied Sciences
Full-waveform velocity inversion has long been a primary focus in seismic exploration. Full-waveform inversion techniques employing physics-informed recurrent neural networks (PIRNNs) have recently gained significant scholarly attention.
Cai Lu   +5 more
doaj   +1 more source

Targeting miRNA‐1a and miRNA‐15b: A Novel Combinatorial Strategy to Drive Adult Cardiac Regeneration

open access: yesAdvanced Science, EarlyView.
The article explores a novel therapeutic strategy for cardiac regeneration by targeting miRNA‐1a and miRNA‐15b. Combinatorial inhibition of miR‐1a and miR‐15b enhances cardiomyocyte proliferation, improves heart function, and reduces fibrosis in myocardial infarction models.
Ting Yuan   +16 more
wiley   +1 more source

A Hollow Shell‐Lattice Soft Robot in Flexible Pipelines with Flowing Fluids

open access: yesAdvanced Science, EarlyView.
This study proposes a novel shell‐lattice robot with hollow bodies, capable of crawling through pipes with flowing fluids of high velocities and viscosities and mixed with impurities. The robot also features capabilities of crawling with high payloads, in curved pipes, and unthethered crawling. These unique properties make this robot high promising for
Di Guo, Yiqiang Wang, Zhan Kang
wiley   +1 more source

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