Results 31 to 40 of about 602,274 (295)

The First Supernova Explosions: Energetics, Feedback, and Chemical Enrichment

, 2009
We perform three-dimensional smoothed particle hydrodynamics simulations in a realistic cosmological setting to investigate the expansion, feedback, and chemical enrichment properties of a 200 M_sun pair-instability supernova in the high-redshift ...
Bondi H., Ciardi B., Frebel A., Gardner J. P., Glover S. C. O., Gull S. F., Ikeuchi S., Jarrett L. Johnson, Johnson J. L., Larson R. B., Ralf S. Klessen, Thomas H. Greif, Volker Bromm   +12 more
core   +1 more source

Initial Chemical Enrichment in Galaxies

, 1997
LaTeX, 1 PS figure, to appear in the Proceedings of the 18th Texas Symposium (1997)
Lu, Limin, Sargent, Wallace L. W., Barlow, Thomas A.   +2 more
openaire   +2 more sources

Chemical enrichment from massive stars in starbursts [PDF]

Symposium - International Astronomical Union, 1999
The warm ionized gas in low-mass, metal-poor star forming galaxies is chemically homogeneous despite the prevalence of large H II regions which contain hundreds of evolved massive stars, supernovae, and Wolf-Rayet stars with chemically-enriched winds.
openaire   +2 more sources

A novel molybdenite depressant for efficient selective flotation separation of chalcopyrite and molybdenite

International Journal of Mining Science and Technology
A novel small molecule depressant (M-DEP) was used to separate chalcopyrite and molybdenite via flotation. The results showed that M-DEP had an excellent selective depression on molybdenite, while had little effect on the flotation of chalcopyrite.
Mengyao Qi, Weijun Peng, Wei Wang, Yijun Cao, Longyu Zhang, Yukun Huang   +5 more
doaj   +1 more source

The Chemical Enrichment History of the Large Magellanic Cloud

, 2007
Ca II triplet spectroscopy has been used to derive stellar metallicities for individual stars in four LMC fields situated at galactocentric distances of 3\arcdeg, 5\arcdeg, 6\arcdeg\@ and 8\arcdeg\@ to the north of the Bar.
A. Aparicio, Alves D. R., Aparicio A. & Gallart C., Bica E., C. Gallart, Carrera R., Cole A. A., Cole A. A., Dirsch B., Eduardo Hardy, Gallart C., Grocholski A. J., Hill V., Holtzman J. A., Koch A., Kontizas M., Maeder A., Nidever D. L., Pagel B. E. J. & Tautvaisiene G., Peimbert M., Pont F., R. Carrera, R. Zinn, Santos F. F. C., Scalo J. M., Sellwood J. A. & Wilkinson A., Tinsley B. M., Vallenari A., Westerlund B. E.   +28 more
core   +1 more source

Huff-n-puff experiments of mixed CO2 and formation water for enhanced oil recovery of shale oil in the Subei Basin

Meitian dizhi yu kantan
ObjectiveIn the Subei Basin, the depletion-drive development of shale oil following reservoir volume fracturing faces challenges such as rapid production decline and low oil recovery. To address these issues, this study explored an experimental method of
Pufu XIAO, Jie ZHANG, Zhengmao YANG, Rui WANG, Maolei CUI, Mengmeng LEI, Yunfei TIAN, Jun ZENG, Yuwei LIU   +8 more
doaj   +1 more source

Chemical enrichment in the cluster of galaxies Hydra A

, 2008
We analyzed global properties, radial profiles and 2D maps of the metal abundances and temperature in the cool core cluster of galaxies Hydra A using a deep XMM-Newton exposure.
A. Finoguenov, A. Simionescu, Anders, Belsole, Buote, Böhringer, Böhringer, Böhringer, Cappellari, Cappellaro, Carter, Churazov, Ciotti, David, De Grandi, de Plaa, de Plaa, Dickey, Diehl, Domainko, Durret, Feigelson, Finoguenov, Forman, H. Böhringer, Iwamoto, J. S. Kaastra, Kalberla, Kobayashi, Kobayashi, Lane, Leccardi, Lodders, M. Brüggen, Mannucci, Matsushita, Matsushita, Matsushita, McNamara, McNamara, McNamara, N. Werner, Nomoto, Nulsen, Nulsen, P. E. J. Nulsen, Peterson, Peterson, Pratt, Rasia, Rasia, Read, Rebusco, Reiprich, Renzini, Roediger, Salpeter, Sanders, Sanders, Sato, Simionescu, Snowden, Tamura, Tamura, Tsujimoto, Vikhlinin, Watson, Werner, Werner, Werner, Wise   +70 more
core   +2 more sources

The first galactic stars and chemical enrichment in the halo [PDF]

, 2010
The cosmic microwave background and the cosmic expansion can be interpreted as evidence that the Universe underwent an extremely hot and dense phase about 14 Gyr ago. The nucleosynthesis computations tell us that the Universe emerged from this state with
Andrievsky, Andrievsky, Andrievsky, Aoki, Barklem, Beers, Behara, Bergemann, Bonifacio, Bonifacio, Bonifacio, Caffau, Caffau, Casagrande, Cayrel, Cayrel, Christlieb, Christlieb, Christlieb, Collet, Collet, Frebel, Gehren, González, González, Gustafsson, Kučinskas, Ludwig, Ludwig, Ludwig, Ludwig, Mashonkina, Masseron, Nordlund, Perryman, Piercarlo Bonifacio, Shi, Smiljanic, Wedemeyer   +38 more
core   +5 more sources

Nonstationary-enrichment analysis in uranium enrichment caused by chemical equilibrium.

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1988
Linearization of the nonlinear differential equation which describes the motion of uranium isotopes in the enrichment by redox chromatography was attempted. It was attained by change of variables, resulting in the analytical solution. Re-expression of this solution with the original variables, which are physically meaningful, enabled us to be exactly ...
Kunihiko TAKEDA, Hatsuki ONITSUKA, Toshinori WATANABE   +2 more
openaire   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source