Results 21 to 30 of about 12,394 (217)

Giant breast phyllodes tumor with silent thromboembolism: A case report

Cancer Reports, Volume 6, Issue 9, September 2023., 2023
Abstract Background Phyllodes tumor (PT) is a solid fibroepithelial breast lesion with proliferation of stromal and epithelial elements, usually presents with a rapidly expanding feature. Venous thromboembolism (VTE) have been reported to increase the burden in terms of mortality and morbidity of malignant tumor, and associate with worsened survival ...
Qinbo Wang, Lina Wei, Yuan Zhou, Yingjuan Ou, Haiyan Li   +4 more
wiley   +1 more source

The Complex Upper HR Diagram

Galaxies, 2019
Several decades of observations of the most massive and most luminous stars have revealed a complex upper HR Diagram, shaped by mass loss, and inhabited by a variety of evolved stars exhibiting the consequences of their mass loss histories.
Roberta M. Humphreys
doaj   +1 more source

Extraordinarily stable and wide‐temperature range sodium/potassium‐ion batteries based on 1D SnSe2‐SePAN composite nanofibers

InfoMat, Volume 5, Issue 9, September 2023., 2023
SnSe2‐SePAN composite nanofibers with excellent sodium/potassium storage properties. SnSe2‐SePAN composite is fabricated by an electrospinning route coupled with selenylation process, in which SnSe2 nanoparticles were uniformly encapsulated in the SePAN matrix. DFT result shows that SePAN fiber is propitious to the Na+ diffusion. The obtained composite
Yiyi Wang, Fuyu Xiao, Xi Chen, Peixun Xiong, Chuyuan Lin, Hong‐En Wang, Mingdeng Wei, Qingrong Qian, Qinghua Chen, Lingxing Zeng   +9 more
wiley   +1 more source

The $^{13}$Carbon footprint of B[e] supergiants [PDF]

, 2010
We report on the first detection of $^{13}$C enhancement in two B[e] supergiants in the Large Magellanic Cloud. Stellar evolution models predict the surface abundance in $^{13}$C to strongly increase during main-sequence and post-main sequence evolution ...
A. Liermann, Bik, Bik, Bonnet, Eisenhauer, Howarth, Kraus, Kraus, Kraus, Kraus, Kraus, Kurucz, Lamers, Lodders, M. Borges Fernandes, M. Kraus, McGregor, Meynet, Meynet, Morris, O. Schnurr, Schaller, Skrutskie, Stahl, Thi, Von Zeipel, Waters, Waters, Zickgraf, Zickgraf, Zickgraf   +30 more
core   +1 more source

First Observations With a GNSS Antenna to Radio Telescope Interferometer

Radio Science, Volume 58, Issue 8, August 2023., 2023
Abstract We describe the design of a radio interferometer composed of a Global Navigation Satellite Systems (GNSS) antenna and a Very Long Baseline Interferometry radio telescope. Our eventual goal is to use this interferometer for geodetic applications including local tie measurements.
J. Skeens, J. York, L. Petrov, D. Munton, K. Herrity, R. Ji‐Cathriner, S. Bettadpur, T. Gaussiran   +7 more
wiley   +1 more source

THE ABUNDANCES OF HEAVY ELEMENTS IN RED SUPERGIANTS OF MAGELLANIC CLOUDS

Odessa Astronomical Publications, 2013
The spectra of Magellanic Clouds (MC) supergiants PMMR23, PMMR144 and RM 1-667 with resolving power R=30,000 and signal to noise ratio near 100 obtained at3.6 metertelescope in Chile were analysed. We present are port on the  detailed investigation of MC
V. Gopka, A Yushchenko, V. Kovtyukh, A. Shavrina, V. Yushchenko, S. Vasilyeva, Y. Pavlenko, S. Andrievsky   +7 more
doaj   +1 more source

Stellar winds from Massive Stars [PDF]

, 2000
We review the various techniques through which wind properties of massive stars - O stars, AB supergiants, Luminous Blue Variables (LBVs), Wolf-Rayet (WR) stars and cool supergiants - are derived. The wind momentum-luminosity relation (e.g.
A Feldmeier, AE Wright, AW Fullerton, AW Fullerton, AW Fullerton, AW Pauldrach, B Bohannan, B Salasnich, C Jager, C Jager, C Leitherer, C Leitherer, CD Garmany, CJ Skinner, D Reimers, D Vanbeveren, DB Friend, DJ Hillier, DJ Hillier, DJ Hillier, E Josselin, F Najarro, F Najarro, G Meynet, GM Harper, HGJLM Lamers, HJGLM Lamers, HJGLM Lamers, HJGLM Lamers, ID Howarth, JI Castor, JM Chapman, JS Vink, JTH Loon, K Davidson, KZ Stanek, L Dessart, L Drissen, Lamers, LF Smith, M Jura, M Jura, MAT Groenewegen, MJ Barlow, N Langer, N Panagia, N Reid, P Petrenz, PA Crowther, PA Crowther, PA Crowther, PD Bennett, PF Bowers, PRJ Eenens, PW Morris, R Sylvester, RK Prinja, RK Prinja, RK Prinja, RP Kudritzki, SM Haser, SP Owocki, T Chlebowski, T Nugis, TJ Harries, TJ Jones, W Schmutz, WL Waldron, WL Waldron, WR Hamann   +69 more
core   +3 more sources

On the red supergiant problem [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We examine the problem of estimating the mass range corresponding to the observed red supergiant (RSG) progenitors of Type IIP supernovae. Using Monte Carlo simulations designed to reproduce the properties of the observations, we find that the approach of Davies & Beasor significantly overestimates the maximum mass, yielding
openaire   +2 more sources

A third cluster of red supergiants in the vicinity of the massive cluster RSGC3 [PDF]

, 2012
Recent studies have shown that the area around the massive, obscured cluster RSGC3 may harbour several clusters of red supergiants. In this paper, we analyse a clump of photometrically selected red supergiant candidates 20' south of RSGC3 in order to ...
Alexander, Athanassoula, C. González-Fernández, Cabrera-Lavers, Carpenter, Casali, Cenarro, Clark, Clark, Dame, Davies, Draine, Epchtein, Figer, González-Fernández, Groenewegen, Hambly, Hewett, Hinkle, Hodgkin, I. Negueruela, Jackson, Kučinskas, Lawrence, Levesque, Massarotti, Mermilliod, Messineo, Meynet, Negueruela, Negueruela, Nguyen Luong, Nishiyama, Nishiyama, Rayner, Reid, Rieke, Skrutskie, Straižys, Vollmann, Watson, White, Wood   +42 more
core   +3 more sources

X-Shooting ULLYSES: Massive stars at low metallicity

Astronomy & Astrophysics
Context. Hot massive stars lose mass through radiation-driven winds, producing significant chemical, radiative, and mechanical feedback in the surrounding environment.
Alkousa T., Crowther P. A., Bestenlehner J. M., Sana H., Tramper F., Vink J. S., Najarro F., Sander A. A. C., Bernini-Peron M., Oskinova L., van Loon J. Th., Kuiper R.   +11 more
doaj   +3 more sources