Results 61 to 70 of about 172,368 (310)

The Thick Disk in the Galaxy NGC 4244 from S^4G Imaging [PDF]

, 2010
If thick disks are ubiquitous and a natural product of disk galaxy formation and/or evolution processes, all undisturbed galaxies that have evolved during a significant fraction of a Hubble time should have a thick disk. The late-type spiral galaxy NGC
Athanassoula, E., Bosma, Albert, Buta, Ronald J., Comerón, Sébastien, Elmegreen, Bruce G., Gil de Paz, Armando, Hinz, Joannah L., Ho, Luis C., Holwerda, Benne W., Kim, Taehyun, Knapen, Johan H., Laurikainen, Eija, Menéndez-Delmestre, Karín, Muñoz-Mateos, Juan-Carlos, Regan, Michael W., Salo, Heikki, Schinnerer, Eva, Seibert, Mark, Sheth, Kartik   +18 more
core   +5 more sources

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

The Role of Dust in the Early Universe I : Protogalaxy Evolution [PDF]

, 2011
We develop one-zone galaxy formation models in the early Universe, taking into account dust formation and evolution by supernova (SN) explosions. Especially we focus on the time evolution of dust size distribution, because ${\rm H}_{2}$ formation on the ...
Asao Habe, Bigiel, Bromm, Cazaux, Cherchneff, Cox, Daisuke Yamasawa, Draine, Dwek, Dwek, Gallerani, Galli, Glover, Gnedin, Granato, Greif, Heger, Heger, Hideyuki Umeda, Hiroyuki Hirashita, Inoue, Jappsen, Jappsen, Jappsen, Joggerst, Joggerst, Ken'ichi Nomoto, Kennicutt, Kitayama, Kitayama, Kitayama, Kozasa, Krumholz, Krügel, Li, Machacek, Mackey, Nath, Nozawa, Nozawa, Nozawa, Nozawa, Nozawa, O'Shea, Omukai, Omukai, Omukai, Robertson, Sibthorpe, Silva, Silvia, Smith, Spergel, Susa, Susa, Takashi Kozasa, Takaya Nozawa, Tegmark, Umeda, Whalen, Whalen, Wise, Wise, Wise, Wise, Wolfe, Yoshida   +66 more
core   +2 more sources

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Star Formation Quenching in Quasar Host Galaxies

Frontiers in Astronomy and Space Sciences, 2017
Galaxy evolution is likely to be shaped by negative feedback from active galactic nuclei (AGN). In the whole range of redshifts and luminosities studied so far, galaxies hosting an AGN frequently show fast and extended outflows consisting in both ionized
Stefano Carniani, Stefano Carniani
doaj   +1 more source

The Evolution of the Mass-Metallicity Relation at 0.20 < z < 0.35 [PDF]

Journal of Astronomy and Space Sciences, 2013
We present a spectroscopic study of 343 blue compact galaxies (BCGs) at 0.20 < z < 0.35 from the Sloan Digital Sky Survey (SDSS) DR7 data. We derive gas phase oxygen abundance using the empirical and direct method.
Jiwon Chung, Soo-Chang Rey, Eon-Chang Sung   +2 more
doaj   +1 more source

Studying Galaxy Formation and Evolution from Local Group Galaxies [PDF]

, 2007
8 pages, 2 figures. To appear in the proceedings for the VII Scientific Meeting of the Spanish Astronomical Society (SEA) held in Barcelona, September 12-15 ...
openaire   +2 more sources

The formation and evolution of low-surface-brightness galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Our statistical understanding of galaxy evolution is fundamentally driven by objects that lie above the surface-brightness limits of current wide-area surveys (μ ∼ 23 mag arcsec−2).
G. Martin, S. Kaviraj, C. Laigle, J. Devriendt, Robert Allan Jackson, S. Peirani, Y. Dubois, C. Pichon, A. Slyz   +8 more
semanticscholar   +1 more source

The star-formation history of the Milky Way Galaxy

, 2009
The star-formation histories of the main stellar components of the Milky Way constrain critical aspects of galaxy formation and evolution. I discuss recent determinations of such histories, together with their interpretation in terms of theories of disk ...
Bensby, Bensby, Bensby, Cignoni, Famaey, François, Maiolino, Nordström, Rocha-Pinto, Rosemary F. G. Wyse, Wyse, Wyse   +11 more
core   +1 more source

A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase

Advanced Science, EarlyView.
Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol, Lihi Gur‐Arie, Netanel Tzarum, Tamara Wellins, Naama Katsowich, Miriam Ravins, Michal Bejerano‐Sagie, Klil Cohen, Oded Livnah, Joshua N. Adkins, Ernesto Nakayasu, Alexei Savchenko, Yeu Khai Choong, Nikhil Kumar Tulsian, Saturo Machida, Sigal Ben‐Yehuda, Yael Litvak, J. Sivaraman, Ilan Rosenshine   +18 more
wiley   +1 more source