Results 11 to 20 of about 14,685,404 (204)

The origin of cold ISM structure

open access: yesProceedings of the International Astronomical Union
Since the 1960s, it has been well established that gas in galaxies exists in distinct phases, a result of the balance between heating from stellar radiation fields and local sources, and cooling processes through atomic and molecular lines.
Rowan Smith
semanticscholar   +2 more sources

The structure and kinematics of the ISM around HD 192281 [PDF]

open access: yesAstronomy & Astrophysics, 2011
Facultad de Ciencias Astronómicas y ...
Arnal, Edmundo Marcelo   +4 more
openaire   +2 more sources

The supernova-regulated ISM – I. The multiphase structure [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
We simulate the multi-phase interstellar medium randomly heated and stirred by supernovae, with gravity, differential rotation and other parameters of the solar neighbourhood. Here we describe in detail both numerical and physical aspects of the model, including injection of thermal and kinetic energy by SN explosions, radiative cooling, photoelectric ...
Gent, F.A.   +5 more
openaire   +6 more sources

Fine–scale structure of the neutral ISM in M81 [PDF]

open access: yesProceedings of the International Astronomical Union, 2006
AbstractWe present an analysis of the fine–scale structure of the neutral ISM as traced via the 21-cm line of atomic hydrogen (HI) in the nearby galaxy M 81. The data show a stunning amount of detail in the form of 330 expanding shells and holes in the neutral ISM of M 81.
Ioannis Bagetakos   +3 more
openaire   +1 more source

Transformational Entrepreneurship and Digital Platforms: A Combination of ISM-MICMAC and Unsupervised Machine Learning Algorithms

open access: yesBig Data and Cognitive Computing, 2023
For many years, entrepreneurs were considered the change agents of their societies. They use their initiative and innovative minds to solve problems and create value.
P. Ebrahimi   +4 more
semanticscholar   +1 more source

A Wearable Self-Grounding Slit Antenna for ISM/4G/5G/Bluetooth/WLAN Applications

open access: yesIEEE Access, 2023
This design proposes a self-grounding semi-circular gap dual-band flexible antenna in the context of the rapid development of wireless body area networks.
Zhen Yu   +6 more
semanticscholar   +1 more source

Structure distribution and turbulence in self-consistently supernova-driven ISM of multiphase magnetized galactic discs [PDF]

open access: yes, 2017
Context. Galaxy evolution and star formation are two multi-scale problems tightly linked to each other. Aims. We aim to describe simultaneously the large-scale evolution widely induced by the feedback processes and the details of the gas dynamics that ...
O. Iffrig, P. Hennebelle
semanticscholar   +1 more source

A Low-Profile Antenna for On-Body and Off-Body Applications in the Lower and Upper ISM and WLAN Bands

open access: yesItalian National Conference on Sensors, 2023
The article presents a Co-planar Waveguide (CPW) fed antenna of a low-profile, simple geometry, and compact size operating at the dual band for ISM and WLAN applications for 5G communication devices.
E. Ali   +7 more
semanticscholar   +1 more source

The Phase Structure of the ISM in Galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2009
AbstractDiffuse gas in the Galaxy is observed to exist as cold (T ~ 100 K) neutral atomic gas (CNM) and warm neutral atomic (T ~ 8000 K) gas (WNM). In addition to these “thermal” phases, gas can also exist as warm (T ~ 8000 K) ionized gas, cold (T ~ 10 K) molecular gas and in warm (T ~ 100 - 500 K) interface regions or Photodissociation Regions (PDRs ...
openaire   +1 more source

A compact and miniaturized implantable antenna for ISM band in wireless cardiac pacemaker system

open access: yesScientific Reports, 2022
A tiny and compact implantable antenna for wireless cardiac pacemaker systems is designed. The antenna works in the Industrial Scientific Medical (ISM) frequency band (2.4–2.48 GHz).
Yang Feng   +4 more
semanticscholar   +1 more source

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