Results 91 to 100 of about 307,688 (344)

High-Resolution Spectroscopy of Cool Carbon-Rich and Metal-Poor Star HD 209621

Open Astronomy, 2012
Element abundances for HD 209621 obtained earlier display significant discrepancies, especially in the case of CNO and neutron-capture elements. Therefore we performed a detailed analysis of chemical composition of this star using a new high-resolution ...
Matrozis E., Začs L., Barzdis A.
doaj   +1 more source

Antibiofilm activity of a chionodracine‐derived peptide by NMR‐based metabolomics of cell‐free supernatant of Acinetobacter baumannii clinical strains

FEBS Open Bio, EarlyView.
KHS‐Cnd peptide is able to impair biofilm formation and disaggregate mature biofilms in Acinetobacter baumannii clinical isolates. Differences in extracellular metabolites reflect changes in biofilm metabolism due to KHS‐Cnd treatment. Among the differentially represented extracellular metabolites upon KHS‐Cnd treatment, the significantly altered ...
Fernando Porcelli, Enrico Landi, Francesco Maiurano, Irene Paris, Rosanna Papa, Marco Artini, Laura Selan, Stefano Borocci, Francesco Buonocore, Esther Imperlini   +9 more
wiley   +1 more source

A WC/WO star exploding within an expanding carbon–oxygen–neon nebula [PDF]

, 2022
A. Gal‐Yam, R. Bruch, S. Schulze, Yi Yang, D. A. Perley, I. Irani, J. Sollerman, Erik C. Kool, Maayane T. Soumagnac, O. Yaron, N. L. Strotjohann, E. Zimmerman, C. Barbarino, S. R. Kulkarni, M. M. Kasliwal, Kishalay De, Yuhan Yao, C. Fremling, Lin Yan, E. O. Ofek, Claes Fransson, A. V. Filippenko, WeiKang Zheng, Thomas G. Brink, C. M. Copperwheat, R. J. Foley, Justin M. Brown, M. R. Siebert, G. Leloudas, A. Cabrera‐Lavers, D. García-Álvarez, A. Marante-Barreto, Sara Frederick, T. Hung, J. C. Wheeler, J. Vinkó, Benjamin P. Thomas, M. J. Graham, Dmitry A. Duev, A. J. Drake, Richard Dekany, Eric C. Bellm, B. Rusholme, D. L. Shupe, Igor Andreoni, Y. Sharma, Reed Riddle, Jan van Roestel, Nikola Knežević   +48 more
openalex   +1 more source

Third Dredge-up in Low Mass Stars: Solving the LMC Carbon Star Mystery

, 2004
A long standing problem with asymptotic giant branch (AGB) star models has been their inability to produce the low-luminosity carbon stars in the Large and Small Magellanic Clouds. Dredge-up must begin earlier and extend deeper.
Böhm-Vitense, Christopher A. Tout, Cook, Eggleton, Frost, Groenewegen, Harries, Herwig, Iben, Iben, Izzard, Izzard, Karakas, Kroupa, Marigo, Mowlavi, Pols, Pols, Richard J. Stancliffe, Robert G. Izzard, Sackmann, Stancliffe, Straniero, Van Eck, Vassiliadis, Wood, Wood   +26 more
core   +2 more sources

The production of low-mass stars. IV - Carbon stars

The Astrophysical Journal, 1988
Calculs d'evolution stellaire en fonction de la masse initiale de l'etoile et de sa metallicite. On note deux cas, de metallicite pauvre, ou l'etoile est devenue une etoile carbonee, l'une apres son 11eme flash, l'autre immediatement arpes le ...
Arnold I. Boothroyd, I.-Juliana Sackmann
openaire   +1 more source

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

FEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies, Garth L. Maker, Ian F. Musgrave, Samantha Lodge   +3 more
wiley   +1 more source

Gas phase atomic metals in the circumstellar envelope of IRC+10216

, 2010
We report the results of a search for gas phase atomic metals in the circumstellar envelope of the AGB carbon star IRC+10216. The search was made using high resolution (R=50000) optical absorption spectroscopy of a backgound star that probes the envelope
Chaffee, Cherchneff, Coelho, Cordiner, Cox, Delgado Inglada, Dunbar, Field, Gilman, Glassgold, Highberger, Huggins, Huggins, Huggins, Jura, Kendall, Keyes, Kingdon, Kwan, Lafont, Lodders, Lodders, Loup, Martin, Mauron, Mauron, Mauron, McCabe, Middlemass, Morris, Morton, Morton, N. Mauron, Olofsson, P. J. Huggins, Péquignot, Ramstedt, Savage, Schöier, Tsuji, Turner, Young, Zhang, Ziurys, Ziurys, Ziurys, Ziurys   +46 more
core   +1 more source

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source

Assessment of Sustainable Building Design with Green Star Rating Using BIM

Energies
Globally, construction is among the leading sectors causing carbon emissions. Sustainable practices have become the focus, which aligns with the nation’s commitments to the Paris Agreement by targeting a 30% reduction in emissions from the 2005 levels by
Mazharuddin Syed Ahmed, Rehan Masood
doaj   +1 more source

Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turn-Off Stars from the SDSS/SEGUE Sample

, 2008
The chemical compositions of seven Carbon-Enhanced Metal-Poor (CEMP) turn-off stars are determined from high-resolution spectroscopy. Five of them are selected from the SDSS/SEGUE sample of metal-poor stars.
Alonso A., Alvarez R., Aoki W., Beers T. C., Brian Marsteller, Cui W., Daniela Carollo, John E. Norris, Marsteller B., Munari U., Noguchi K., Satoshi Honda, Sean G. Ryan, Simons J. W., Thirupathi Sivarani, Timothy C. Beers, Wako Aoki, Young Sun Lee   +17 more
core   +1 more source