Results 111 to 120 of about 4,196,526 (247)

Oral Astilbin Nanogels Modulate Senescence‐Associated CD4+ T Cells and Promote Treg Induction in Aged Mice with Colitis

Advanced Science, EarlyView.
Fluorinated β‐glucan/pectin nanogels enable colon‐targeted oral delivery of astilbin through gastrointestinal protection, β‐glucanase‐responsive release, mucus penetration, and prolonged retention. The released astilbin attenuates senescence‐associated features of CD4+ T cells and promotes Treg responses, while the nanogel matrix modulates the gut ...
Lei Zhao, Xinyun Zhang, Qian Ren, Xue Song, Meifang Zhao, Rongshen Wang, Haocheng Du, Yan Chen, Peigen Xu, Jiangyun Liu, Jian Zhang, Jingjing Ma   +11 more
wiley   +1 more source

Mass segregation in young stellar clusters

, 1998
We investigate the evolutionary effect of dynamical mass segregation in young stellar clusters. Dynamical mass segregation acts on a time-scale of order the relaxation time of a cluster.
Bonnell, Ian Alexander, Davies, MB
core   +2 more sources

Initial Mass Functions of Young Stellar Clusters from the Gemini Spectroscopic Survey of Nearby Galaxies. II. Young Clusters in NGC 1313

The Astronomical Journal
We present a spectroscopic study of young stellar clusters in the barred spiral galaxy NGC 1313. Integrated light spectra of 11 clusters, obtained using the GMOS-S instrument on the 8.1 m Gemini South telescope, are analyzed using a simple stellar ...
Jae-Rim Koo, Hyun-Jeong Kim, Beomdu Lim
doaj   +1 more source

Fragmentation of young massive clusters in binary components: an application of Griddy Gibbs Sampler

Frontiers in Astronomy and Space Sciences
The study of the process of hierarchical fragmentation of molecular clouds within Young Massive Clusters required modeling the Initial Mass Function by considering both binary and single-star components.
Abisa Sinha Adhikary, Ankita Das
doaj   +1 more source

Mid-infrared [NeII] Imaging of Young Massive Star Clusters Near Galactic Nuclei

, 2015
We investigate the formation of young massive clusters near the nuclei in NGC 6946, IC 342, Maffei II, and NGC 7714, using ground-based mid-infrared [NeII] imaging.
Chao-Wei Tsai, Sherry C. C. Yeh, Thomas R. Geballe, Cinthya N. Herrera   +3 more
core   +1 more source

Enhancing Specific Stiffness of Nano‐Architected Materials Through Generative AI and Active Learning

Advanced Science, EarlyView.
A structure‐centric generative framework searches voxelated design space directly, coupling a variational autoencoder with multi‐objective optimization and active learning to progressively expand the validated design domain. The discovered nano‐architectures, realized as pyrolytic carbon by two‐photon lithography, deliver 18–23% higher stiffness and 26–
Jinwook Yeo, Peter Serles, Donggeun Park, Julia R. Greer, Seunghwa Ryu   +4 more
wiley   +1 more source

Probing Hadronic γ-Ray and High-energy Neutrino Emission from Gaia DR2 Star Clusters

The Astrophysical Journal
Young and massive stellar clusters are a potential source of galactic cosmic rays due to at least two acceleration mechanisms. Collective stellar winds from massive stars form a wind-blown bubble with a termination shock at which particle acceleration to
Alison M. W. Mitchell, Giovanni Morlino, Silvia Celli, Stefano Menchiari, Andreas Specovius   +4 more
doaj   +1 more source

Massive stars in young VVV clusters

, 2016
The role of massive stars in the Galactic evolution is crucial. During their lifetime these stars change the kinematics around them through stellar winds, affect the formation of new stars, ionise and chemically enrich the media with the final supernova ...
A.-N. Chené, J. Borissova, S. Ramírez Alegría   +2 more
core   +1 more source

LigHTS: Biomimetic Hydrogel Photo‐Fabrication for Imaging‐Based Ultra‐High‐Throughput Screening

Advanced Science, EarlyView.
LigHTS removes a key bottleneck for ultra‐high‐throughput screening (UHTS) by enabling biomimetic hydrogel microenvironments to be manufactured directly in standard multiwell plates. A single, collimated UV exposure with formulation‐tuned light penetration patterns an entire plate with UHTS‐grade uniformity (<20% CV), producing structured GelMA films ...
Alessandro Enrico, Sara Rigolli, Julius Zimmermann, Melissa Pezzotti, Eloisa Torchia, Moises Di Sante, Ferdinando Auricchio, Francesco S. Pasqualini   +7 more
wiley   +1 more source

Astrocyte‐Associated ABCA1/APOE Responses Accompany Hippocampal Lipid Remodeling and Ectopic Neuronal Accumulation During Epileptogenesis

Advanced Science, EarlyView.
During kainic acid‐induced epileptogenesis, astrocyte‐associated ATP‐binding cassette transporter A1 (ABCA1) and apolipoprotein E (APOE) responses accompany ectopic neurons and exploratory lipid alterations. In separate cohorts, bexarotene pretreatment and treatment on days 14–21 are associated with fewer ectopic hilar neurons and lower chronic seizure
Lu Chen, Xiao‐Rui Shi, Jia‐Yi Chen, Ying‐Ting Wang, Le Du, Yang Ni, Jun‐Min Chen, An‐Chen Guo, Qian Wu, Jian‐Ping Wu, Qun Wang   +10 more
wiley   +1 more source