Results 121 to 130 of about 577,018 (252)

Large-scale Gas Dynamics in the Milky Way

open access: yes, 2003
We present new gas flow models for the Milky Way inside the solar circle. Using a mass model derived from the COBE/DIRBE maps and clump giant star counts, and using a parametric model for the spiral arm pattern in the disk, we calculate the gas flow and compare with 12CO observations.
Englmaier, P.   +2 more
openaire   +2 more sources

Transforming Healthcare: Intelligent Wearable Sensors Empowered by Smart Materials and Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
Wearable sensors, empowered by AI and smart materials, revolutionize healthcare by enabling intelligent disease diagnosis, personalized therapy, and seamless health monitoring without disrupting daily life. This review explores cutting‐edge advancements in smart materials and AI‐driven technologies that empower wearable sensors for diagnostics and ...
Shuwen Chen   +14 more
wiley   +1 more source

Dynamical effects of the long bar in the Milky Way

open access: yes, 2008
5 pages, 3 figures. To appear in the online proceedings of IAU symposium 254 - The Galaxy Disk in Cosmological Context. Uses iaus.cls.
Gardner, Esko   +2 more
openaire   +2 more sources

Universal Prophylactic Antitumor Vaccination Using Stem Cell Membrane‐Coated Nanoparticles

open access: yesAdvanced Materials, EarlyView.
Induced pluripotent stem cell membrane is coated onto adjuvant‐loaded nanoparticle cores to create a universal cancer vaccine. The formulation utilizes oncofetal antigens present on the cell membrane to elicit broadly protective immune responses in vivo.
Nishta Krishnan   +10 more
wiley   +1 more source

Accurate, Precise, and Physically Self-consistent Ages and Metallicities for 400,000 Solar Neighborhood Subgiant Branch Stars

open access: yesThe Astrophysical Journal
Age is the most difficult fundamental stellar parameter to infer for isolated stars. While isochrone-based ages are in general imprecise for both main-sequence dwarfs and red giants, precise isochrone-based ages can be obtained for stars on the subgiant ...
David M. Nataf   +3 more
doaj   +1 more source

MOND's Problem in Local Group [PDF]

open access: yesarXiv, 2011
I use the distances and motions of Local Group galaxies to test Modified Newtonian Dynamics (MOND). The old Local Group timing argument of Kahn & Woltjer, which assumed Newtonian gravity and a simple radial orbit, indicated that the total mass of M31 and the Milky Way far exceeds their known baryonic mass.
arxiv  

Four-hundred Very Metal-poor Stars Studied with LAMOST and Subaru. III. Dynamically Tagged Groups and Chemodynamical Properties

open access: yesThe Astrophysical Journal
Very metal-poor (VMP) stars record the signatures of early accreted galaxies, making them essential tools for unraveling the early stages of Galaxy formation.
Ruizhi Zhang   +11 more
doaj   +1 more source

Estimating the Vertical Disk Scale Height Using Young Galactic Objects

open access: yesOpen Astronomy, 2016
We compiled published data on young Galactic objects such as masers with VLBI-measured trigonometric parallaxes, OB associations, H II regions and Cepheids.
Bobylev V. V., Bajkova A. T.
doaj   +1 more source

Enlighten the dark in the Milky Way with dynamical models

open access: yes, 2015
Since the first studies of galactic rotation curves we have seen evidence of a dark mass component in the halos of galaxies we can not observe directly. As the motion of astronomical objects are sensitive to the underlying gravitational potential, we can use dynamical models to infer the distribution of dark matter in galaxies including the Milky Way ...
openaire   +3 more sources

Connecting Droplet Adhesion with Sperm Kinematics: A New Paradigm in Sperm Quality Monitoring

open access: yesAdvanced Materials Interfaces, EarlyView.
This study demonstrates direct experimental evidence to establish a nonintuitive connection between the motion characteristics of self‐propelled sperm cells and their surface interaction. Simultaneous motion visualization and cantilever‐deflection‐based adhesion characterization reveal that sperm‐cell droplets with higher motility exhibit lower surface
Sudip Shyam   +3 more
wiley   +1 more source

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