Results 51 to 60 of about 112,637 (293)

Hydrodynamic Processes in Massive Stars [PDF]

, 2008
The hydrodynamic processes operating within stellar interiors are far richer than represented by the best stellar evolution model available. Although it is now widely understood, through astrophysical simulation and relevant terrestrial experiment, that ...
Arnett, Casey A. Meakin, Kolmogorov, Kuhfuss, Meakin, Turner, Zahn   +6 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

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

McScatter: a Simple Three-Body Scattering Package with Stellar Evolution

, 2006
We describe a simple computer package which illustrates a method of combining stellar dynamics with stellar evolution. Though the method is intended for elaborate applications (especially the dynamical evolution of rich star clusters) it is illustrated ...
Heggie, Douglas C., Hurley, Jarrod, Zwart, Simon Portegies   +2 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

The Kinematics of the Young Stellar Population in the W5 Region of the Cassiopeia OB6 Association: Implication for the Formation Process of Stellar Associations

The Astronomical Journal, 2023
The star-forming region W5 is a major part of the Cassiopeia OB6 association. Its internal structure and kinematics may provide hints of the star formation process in this region.
Beomdu Lim, Jongsuk Hong, Jinhee Lee, Hyeong-Sik Yun, Narae Hwang, Byeong-Gon Park   +5 more
doaj   +1 more source

Secular Stellar Dynamics near a Massive Black Hole

, 2011
The angular momentum evolution of stars close to massive black holes (MBHs) is driven by secular torques. In contrast to two-body relaxation, where interactions between stars are incoherent, the resulting resonant relaxation (RR) process is characterized
Alexander, Alexander, Alexander, Ann-Marie Madigan, Bartko, Baumgardt, Binney, Clovis Hopman, Danby, Do, Eilon, Eisenhauer, Eisenhauer, Ferrarese, Figer, Figer, Frank, Freitag, Gebhardt, Genzel, Genzel, Ghez, Ghez, Ghez, Gillessen, Gould, Griv, Gualandris, Heij, Hopman, Hopman, Hopman, Hopman, Hopman, Keshet, Landau, Levin, Löckmann, Madigan, Madigan, Martins, Merritt, Merritt, Merritt, Merritt, Merritt, Perets, Perets, Perets, Preto, Preto, Rauch, Schödel, Shen, Spitzer, Tremaine, Weinberg, Yuri Levin, Zhu   +58 more
core   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

FEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz, Milagros Siebeck Caturelli, Lina S. Lehmann, Florian Kurth, Alexander G. Maier, Kai Matuschewski   +5 more
wiley   +1 more source

Stellar Ancestry Unlocked: Chemical and Orbital Clues Link Metal-poor Stars to Globular Clusters and the Galaxy’s Thick Disk

The Astronomical Journal
This study presents a detailed chemical, kinematic, and orbital dynamic analysis of five metal-poor stars in the solar neighborhood: HD 2665, HD 5916, HD 122956, HD 189349, and HD 218857.
Gizay Yolalan, Timur Şahin, Selçuk Bilir, Olcay Plevne   +3 more
doaj   +1 more source

Internal Kinematics and Structure of the Bulge Globular Cluster NGC 6569

The Astrophysical Journal, 2023
In the context of a project aimed at characterizing the properties of star clusters in the Galactic bulge, here we present the determination of the internal kinematics and structure of the massive globular cluster NGC 6569.
Cristina Pallanca, Silvia Leanza, Francesco R. Ferraro, Barbara Lanzoni, Emanuele Dalessandro, Mario Cadelano, Enrico Vesperini, Livia Origlia, Alessio Mucciarelli, Elena Valenti, Andrea Miola   +10 more
doaj   +1 more source