Results 41 to 50 of about 637,149 (308)

Letter to the Editor
UHF electromagnetic emission stimulated by HF pumping of the ionosphere [PDF]

Annales Geophysicae, 2002
UHF electromagnetic emission (with a frequency near 600 MHz) from the F-region of the ionosphere pumped by an HF powerful radio wave is revealed. Possible mechanisms of the emission excitation, such as plasma mode con-version, scattering or Earth ...
S. M. Grach, S. M. Grach, V. M. Fridman, L. M. Lifshits, T. S. Podstrigach, E. N. Sergeev, S. D. Snegirev   +6 more
doaj   +1 more source

Nucleosynthesis in Type Ia Supernovae, Classical Novae, and Type I X-Ray Bursts. A Primer on Stellar Explosions [PDF]

EPJ Web of Conferences
Nuclear astrophysics aims at unraveling the cosmic origins of chemical elements and the physical processes powering stars. It constitutes a truly multidisciplinary field, that integrates tools, advancements, and accomplishments from theoretical ...
José Jordi
doaj   +1 more source

Supermassive Black Holes in Active Galactic Nuclei [PDF]

, 2000
This article gives a brief overview of the direct and indirect evidence in support of the standard paradigm that active galactic nuclei are powered by supermassive black holes.Comment: A review to appear in The Encyclopedia of Astronomy and Astrophysics
Ho, Luis C., Kormendy, John
core   +3 more sources

CD44v, S1PR1, HER3, MET and cancer‐associated amino acid transporters are promising targets for the pancreatic cancers characterized using mAb

FEBS Open Bio, EarlyView.
Novel mAbs could detect cancer‐associated membrane proteins on various type of pancreatic ductal adenocarcinomas (PDAC) by flow cytometry with viable PDAC cells and by immunohistochemistry with PDAC tissues. Results of protein expression were substantiated by mRNA expression by The Cancer Genome Atlas.
Takashi Nakano, Kouki Okita, Shogo Okazaki, Soshi Yoshimoto, Sachiko Masuko, Hideki Yagi, Kazunori Kato, Yoshihisa Tomioka, Kenichi Imai, Yoichi Hamada, Kazue Masuko, Kayoko Shimada‐Takaura, Noriaki Nagai, Hideyuki Saya, Tomio Arai, Toshiyuki Ishiwata, Takashi Masuko   +16 more
wiley   +1 more source

Measuring Research Impact of Astronomers/Astrophysicists by using Astrophysics Data System Beta: A Powerful New Interface: A case study with Special Reference to Prof. Jayant V. Narlikar

EPJ Web of Conferences, 2018
This paper highlights qualitatively and quantitatively research and presents a valuable overview of new citation enhanced databases in the context of research evaluation for the productivity of Prof. Jayant V. Narlikar.
Kumar Sahu Hemant, Nath Singh Surya
doaj   +1 more source

Using Cepheids to determine the galactic abundance gradient I. The solar neighbourhood [PDF]

, 2001
A number of studies of abundance gradients in the galactic disk have been performed in recent years. The results obtained are rather disparate: from no detectable gradient to a rather significant slope of about -0.1 dex kpc -1. The present study concerns
Afflerbach, Amaral, Andrievsky, Andrievsky, Andrievsky, Andrievsky, B. Barbuy, Barklem, Blitz, Cameron, Carraro, Cunha, D. Bersier, Daflon, Deharveng, Dennisenkov, Dennisenkov, Dennisenkov, Edmunds, Evans, Fernie, Fernley, Fich, Fitzsimmons, Fitzsimmons, Friel, Friel, Friel, Fry, Fux, Fux, Geisler, Gieren, Gies, Gough, Grevesse, Gummersbach, Harris, Harris, Harris, Hill, Hou, J. R. D. Lépine, Janes, Kaufer, Kilian, Kilian, Kilian-Montenbruck, Kiss, Kovtyukh, Kovtyukh, Lacey, Laney, Luck, Luck, Luck, Lépine, Lépine, López-Corredoira, Maciel, Maciel, Martin, Martinet, McNamara, Neese, Panagia, Pasquali, Petersen, Peña, Portinari, R. E. Luck, R. U. Karpischek, Raboud, Rastorguev, Rodriguez, Rolleston, Rudolph, S. M. Andrievsky, Sasselov, Schaller, Shaver, Simpson, Simpson, Smartt, Stark, Thogersen, Travaglio, Turner, V. E. Panchuk, V. G. Klochkova, V. V. Kovtyukh, Vilchez, W. J. Maciel   +92 more
core   +2 more sources

Evaluation of research publications and publication channels in astronomy and astrophysics

EPJ Web of Conferences, 2018
The astronomy community usually turns to the Astrophysics Data System for bibliometrics. When the context is cross-disciplinary, commercial products like Web of Science and Scopus are used along with related analytics tools instead. The results are often
Isaksson Eva, Vesterinen Henrik
doaj   +1 more source

The purpose of astronomy [PDF]

Vistas Astron. 39 (1995) 315, 1995
This is a presentation of the purpose of astronomy in the context of modern society. After exposing two misconceptions about astronomy, I detail its role in five domains, certified knowledge, incorporated abilities, innovations, collective goods, and popular science; with each domain is associated an institution, an incentive, and a method of ...
arxiv   +1 more source

In vivo transit dosimetry methodology for whole breast intensity modulated radiation therapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background In vivo transit dosimetry using an electronic portal imaging device (EPID‐IVTD) is an important tool for verifying the accuracy of radiation therapy treatments. Despite its potential, the implementation of EPID‐IVTD in breast intensity modulated radiation therapy (IMRT) treatments has not yet been standardized, limiting its clinical
Lucia Zirone, Elisa Bonanno, Giuseppina R. Borzì, Nina Cavalli, Alessia D'Anna, Andrea Girlando, Martina Pace, Giuseppe Stella, Carmelo Marino   +8 more
wiley   +1 more source

Exploring how gender figures the identity trajectories of two doctoral students in observational astrophysics

Physical Review Physics Education Research, 2018
[This paper is part of the Focused Collection on Astronomy Education Research.] This paper presents the cases of two doctoral students in observational astrophysics whose circumstances and experiences led them on a career trajectory out of academic ...
Allison J. Gonsalves
doaj   +1 more source