Results 41 to 50 of about 1,439,140 (304)

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

Kinetics of electronic spectra of surface of india with adsorbed oxygen [PDF]

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
The spectra of Auger and plasmon losses of polycrystalline indium before and after aging in an oxygen medium have been studied. The kinetics of electronic states on the surface of indium with adsorbed layers of oxygen (exposure in an oxygen medium up to ...
M.A. Aleroev, O.G. Ashkhotov, I.B. Ashkhotova   +2 more
doaj   +1 more source

Design of a ms sway-based e-module on hydrogen atomic spectrum matter

Journal of Aceh Physics Society, 2022
Abstrak. Penelitian ini bertujuan untuk mengembangkan bahan ajar fisika berupa E-modul berbasis Ms Sway  yang menggunakan model pengembangan ADDIE (Analysis, Design, Development, Implementation, Evaluation)  dengan dilaksanakan dalam beberapa tahap ...
Ifatul Khasanah, Dea Nur Umiel Agustine, Eti Elisa, Kharisma Rafian Azis   +3 more
doaj   +1 more source

Quantum uncertainties in coupled harmonic oscillator

, 1996
In this paper we analyze the quantum uncertainties and the photon statistics in the interaction between the two modes of radiation by treating them as coupled harmonic oscillator with the motivation of controlling quantum properties of one light beam by ...
Abir Bandyopadhyay, Cottevette, Henry, Jagdish Rai, Lai, Louisell, Love, Pierce, Teich, Walls, Walls   +10 more
core   +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

The Atom at the Heart of Physics

Atoms, 2023
A number of reasons are advanced for which atoms stand at the heart of research in the physical sciences. There are issues in physics which are both fundamental and only partly resolved or, at least, imperfectly understood. Rather than chase them towards
Jean-Patrick Connerade
doaj   +1 more source

Band Gaps for Atoms in Light based Waveguides

, 1995
The energy spectrum for a system of atoms in a periodic potential can exhibit a gap in the band structure. We describe a system in which a laser is used to produce a mechanical potential for the atoms, and a standing wave light field is used to shift the
A. Hemmerich, A. Kastberg, A.W. Snyder, C. Cohen-Tannoudji, C. Kittel, C. M. Savage, H. Ito, J. J. Hope, J.J. Hope, K. Berg-Sorensen, M. Doery, M. Wilkens, M.J. Renn, N.F. Mott, P. Marte, P. Meystre, S. Marksteiner, S. Sudo, S.H. Autler   +18 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Terahertz rectification in ring-shaped quantum barriers

Nature Communications, 2018
Many experiments have been performed that study rectification by exciting electrons to tunnel across a single quantum barrier. Here, the authors take a 2-dimensional approach by combining 2D closed-loop tunneling barriers with broken symmetry to enable ...
Taehee Kang, R. H. Joon-Yeon Kim, Geunchang Choi, Jaiu Lee, Hyunwoo Park, Hyeongtag Jeon, Cheol-Hwan Park, Dai-Sik Kim   +7 more
doaj   +1 more source

Adiabatic mechanism of the multiply charged ion production by a laser field through ATI states of an atom

, 1996
ATI can be followed by an inelastic collision of the ionized electron with the parent atomic particle resulting in an excitation of the ion. It may be a continuum state excitation producing the doubly charged ion or a discrete state which also enhances ...
Agostini, Becker, Boreham, Boyer, Chin, Corkum, Freeman, Keldysh, Kuchiev, Kuchiev, Kulander, L'Huillier, L'Huillier, L'Huillier, Landau, Lompre, Lotz, Luk, M.Yu. Kuchiev, Pradhan, Reiss, Schumacher, Volkov, Walker   +23 more
core   +1 more source