Results 31 to 40 of about 907,608 (354)

Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores [PDF]

, 2004
We explore the adiabatic pulsational properties of massive white dwarf stars with hydrogen-rich envelopes and oxygen/neon and carbon/oxygen cores. To this end, we compute the cooling of massive white dwarf models for both core compositions taking into ...
A. H. Córsico, Alexander, Althaus, Althaus, Althaus, Althaus, Arnould, Barstow, Bradley, Bradley, Brassard, Brassard, Caughlan, Córsico, Córsico, D'Antona, Dahn, Dupuis, E. García-Berro, Ferrario, García-Berro, García-Berro, García-Berro, Gil-Pons, Grossman, Guerrero, Herwig, Iben, J. Isern, Kanaan, Kawaler, L. G. Althaus, Magni, Montgomery, Montgomery, Osaki, Pfeiffer, Ritossa, Salaris, Schmidt, Segretain, Segretain, Segretain, Segretain, Straniero, Tassoul, Winget   +46 more
core   +3 more sources

Novel Riboflavin-Inspired Conjugated Bio-Organic Semiconductors

Molecules, 2018
Flavins are known to be extremely versatile, thus enabling routes to innumerable modifications in order to obtain desired properties. Thus, in the present paper, the group of bio-inspired conjugated materials based on the alloxazine core is synthetized ...
Jan Richtar, Patricie Heinrichova, Dogukan Hazar Apaydin, Veronika Schmiedova, Cigdem Yumusak, Alexander Kovalenko, Martin Weiter, Niyazi Serdar Sariciftci, Jozef Krajcovic   +8 more
doaj   +1 more source

In-Situ and Real-Time Monitoring of Oxygen Evolution during Kolbe Reaction by Scanning Electrochemical Microscopy

International Journal of Electrochemical Science, 2021
In this study, the oxygen evolution during the Kobe reaction was in-situ and real-time monitored by scanning electrochemical microscopy (SECM) in tip-generation substrate-collection (TG/SC) mode.
Zemin Yu, Yuanbo Wang, Xingyan Cao, Yihan Li, Tianen Ma, Liqiu Zhang, Lichun Liu, Hongyan Yue   +7 more
doaj   +1 more source

The Evolution of Cholesterol-Rich Membrane in Oxygen Adaption: The Respiratory System as a Model. [PDF]

, 2019
The increase in atmospheric oxygen levels imposed significant environmental pressure on primitive organisms concerning intracellular oxygen concentration management.
Patel, Hemal H, Zuniga-Hertz, Juan Pablo
core   +1 more source

Active Carbon and Oxygen Shell Burning Hydrodynamics

, 2006
We have simulated 2.5$\times10^3$ s of the late evolution of a $23 \rm M_\odot$ star with full hydrodynamic behavior. We present the first simulations of a multiple-shell burning epoch, including the concurrent evolution and interaction of an oxygen and ...
Casey A. Meakin, David Arnett, Langer N., Spruit H. C., Stevenson D. J.   +4 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

B‐Site‐Metal Exsolution on Perovskite Oxides Activates Alkaline Water Oxidation via the Lattice Oxygen Mechanism

Advanced Materials Interfaces
Effective electrocatalysts are crucial for facilitating the oxygen evolution reaction (OER), the anodic reaction of water electrolysis for renewable green hydrogen production.
Guangtai Han, Mengjiao Zhuansun, Tongbao Wang, Yuhang Wang   +3 more
doaj   +1 more source

Hierarchically Structured Graphene Aerogel Supported Nickel–Cobalt Oxide Nanowires as an Efficient Electrocatalyst for Oxygen Evolution Reaction

Molecules
The rational design of a heterostructure electrocatalyst is an attractive strategy to produce hydrogen energy by electrochemical water splitting. Herein, we have constructed hierarchically structured architectures by immobilizing nickel–cobalt oxide ...
Donglei Guo, Jiaqi Xu, Guilong Liu, Xu Yu   +3 more
doaj   +1 more source

Direct Observation of Localized Radial Oxygen Migration in Functioning Tantalum Oxide Memristors

, 2016
Oxygen migration in tantalum oxide, a promising next-generation storage material, is studied using in-operando x-ray absorption spectromicroscopy and is used to microphysically describe accelerated evolution of conduction channel and device failure.
Andrews, Chen, Demiryont, Dilks, Gao, Goldfarb, Hur, Jan, Kalantarian, Kamiya, Kamiya, Kilcoyne, Kim, Kim, Kim, Kim, Knop-Gericke, Kumar, Kumar, Maeda, Magyari-Köpe, Menzel, Miao, Noman, Pan, Park, Pierret, Qiu, Qiu, Ruckman, Strachan, Strachan, Strukov, Strukov, Strukov, Torrezan, Wedig, Wei, Yang, Yang, Yang, Yoon, Zhao   +42 more
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source