Results 91 to 100 of about 1,095,170 (283)

Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars [PDF]

, 2011
Red giants are evolved stars that have exhausted the supply of hydrogen in their cores and instead burn hydrogen in a surrounding shell. Once a red giant is sufficiently evolved, the helium in the core also undergoes fusion.
A Miglio, A Miglio, A Pietrinferni, Andrea Miglio, Anne-Marie Broomhall, Arlette Noels, AV Sweigart, B Mosser, B Mosser, Benoit Mosser, C Aerts, C Charbonnel, Caroline Barban, Conny Aerts, D Huber, Daniel Huber, Dennis Stello, Derek L. Buzasi, DO Gough, Fabien Carrier, H Kjeldsen, H Kjeldsen, Hans Kjeldsen, I Iben Jr, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J De Ridder, J Montalbán, JM Jenkins, Jon M. Jenkins, Joris De Ridder, Josefina Montalbán, Jørgen Christensen-Dalsgaard, Kevin Belkacem, L Girardi, M Aizenman, M Dupret, M Schwarzschild, M Tassoul, Marc-Antoine Dupret, Maria Pia Di Mauro, Marie-Jo Goupil, P Ventura, Paolo Ventura, Paul Beck, Rafael A. García, Ronald L. Gilliland, S Deheuvels, Saskia Hekker, Savita Mathur, Steven Kawaler, Søren Frandsen, T Kallinger, Thomas Kallinger, Timothy M. Brown, Timothy R. Bedding, Timothy R. White, TR Bedding, Victor Silva Aguirre, WA Dziembowski, William J. Chaplin, Yvonne P. Elsworth   +61 more
core   +8 more sources

Reevaluating the Activity of ZIF‐8 Based FeNCs for Electrochemical Ammonia Production

Advanced Functional Materials, EarlyView.
Though receiving much attention, the field of electrochemical nitrogen reduction reaction (eNRR) to ammonia is marked by doubts about whether this reaction is possible in aqueous media. This work sheds light on this question for iron single‐atom on N‐doped carbon (FeNC) catalysts—a class of well‐known catalysts that is also worth testing for the sister
Caroline Schneider, S. Esmael Balaghi, Niklas Ortlieb, Patrick Elsaesser, Sima Heidari, Christopher S. Allen, Anna Fischer   +6 more
wiley   +1 more source

Revision of the 15N(p,{\gamma})16O reaction rate and oxygen abundance in H-burning zones

, 2011
The NO cycle takes place in the deepest layer of a H-burning core or shell, when the temperature exceeds T {\simeq} 30 {\cdot} 106 K. The O depletion observed in some globular cluster giant stars, always associated with a Na enhancement, may be due to ...
A. Caciolli, A. Formicola, A. Guglielmetti, A. Lemut, A. Vomiero, Agostinelli, Angulo, Assenbaum, Barker, Bemmerer, Bemmerer, Bonetti, Bordeanu, Brochard, Broggini, C. Broggini, C. Gustavino, C. Mazzocchi, C. Rolfs, C. Rossi Alvarez, Caciolli, Carretta, Casella, Caughlan, Charbonnel, Cognata, Costantini, D. Bemmerer, Denissenkov, D’antona, E. Somorjai, F. Strieder, F. Terrasi, Forestini, G. Gervino, G. Imbriani, Gy. Gyürky, H. Costantini, H. P. Trautvetter, Hebbard, Iben, Iliadis, Jose, Jose, Kraft, Kraft, Langer, Lattanzio, LeBlanc, LeBlanc, Lemut, Limata, M. Junker, M. Marta, Marta, Mukhamedzhanov, Mukhamedzhanov, O. Straniero, P. Corvisiero, P. Prati, Palmerini, R. Menegazzo, Renzini, Rigato, S. Palmerini, Straniero, Sweigart, V. Capogrosso, V. Roca, Vad, Ventura, Wasserburg, Z. Elekes, Zs. Fülöp   +73 more
core   +1 more source

Deuterium-burning in substellar objects [PDF]

, 2000
We consider the depletion of primordial deuterium in the interior of substellar objects as a function of mass, age and absolute magnitude in several photometric passbands.
Baraffe I., Baraffe I., Basri G., Chabrier G., F. Allard, G. Chabrier, I. Baraffe, P. Hauschildt, Salpeter E. E., Schatzman E.   +9 more
core   +4 more sources

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

Cost‐Effective Identification of Hepatocellular Carcinoma from Cirrhosis or Chronic Hepatitis Virus Infection Using Eight Methylated Plasma DNA Markers

Advanced Science
Early detection of hepatocellular carcinoma (HCC) in patients with liver cirrhosis (LC) and/or hepatitis virus B/C infection (HVI) improves survival, highlighting the need for accurate, affordable diagnostic tools.
Tian Yang, Mingda Wang, Nanya Wang, Mingxin Pan, Yu Xu, Qiancheng You, Lanqing Yao, Jiahao Xu, Lihui Gu, Xiaodong Sun, Lei Zhang, Jiayue Xu, Bingsi Li, Guoqiang Wang, Shangli Cai, Guoyue Lv, Feng Shen   +16 more
doaj   +1 more source

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

Advanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka, Oleg Prymak, Kateryna Loza, Matthias Epple   +3 more
wiley   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

Karakteristik Briket Biocoal Dengan Penambahan Sekam Padi Dan Wax [PDF]

, 2011
Biocoal made by mixing Sub-Bituminous Tanjung Enim coal with rice skin biomass to make biocoal briquette that will have calorific value suitable for domestic consumption and also have a quicker initial burning time that has been a problem in applying ...
Dewi, R. M. (Retno), Meidinariasty, A. (Anerasari), ST.,M.T., Tahdid   +2 more
core  

Colloidal Crack Sintering Lithography for Light‐Induced Patterning of Particle Assemblies

Advanced Functional Materials, EarlyView.
Colloidal crack sintering lithography (CCSL) is a microfabrication technique that uses light‐induced photothermal heating to trigger sintering and controlled cracking in polymer colloidal assemblies. Local structural changes generate microchannels and patterns, enabling direct writing of diverse topographic motifs.
Marius Schoettle, Ariane V. Mader, Willem L. Noorduin   +2 more
wiley   +1 more source