Results 61 to 70 of about 235,731 (299)

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

Unveiling Differences in Seismic Response: Comparative Study of Equivalent Linear and Nonlinear Analyses in the Central Coastal Region of Bengkulu, Indonesia

Journal of the Civil Engineering Forum
Seismic response analysis is a key aspect in earthquake geotechnical engineering, as it provides important insights into the behavior of soils when exposedtoseismic forces.
Giovanny Dhebby Anggraini, Lindung Zalbuin Mase, Fepy Supriani, Rena Misliniyati, Khairul Amri, Salisa Chaiyaput   +5 more
doaj   +1 more source

Probabilistic seismic hazard analysis using a new ground motion intensity measure

Dyna, 2016
The main objective of this work is to compute the probabilistic seismic hazard analysis for a region of Mexico using a new ground motion intensity measure which is based on the spectral acceleration and a parameter proxy of the spectral shape named Np ...
Robespiere Chávez López, Edén Bojórquez-Mora   +1 more
doaj   +1 more source

Spectral Variability Signatures of Relativistic Shocks in Blazars [PDF]

, 2018
Mildly relativistic, oblique shocks are frequently invoked as possible sites of relativistic particle acceleration and production of strongly variable, polarized multi-wavelength emission from relativistic jet sources such as blazars, via diffusive shock
Baring, Matthew G., Boettcher, Markus
core   +3 more sources

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Exploring the Origin of Solar Energetic Electrons. II. Investigating Turbulent Coronal Acceleration

The Astrophysical Journal
Nonthermal particle acceleration in the solar corona is evident from both remote hard X-ray sources in the chromosphere and direct in situ detection in the heliosphere.
Ross Pallister, Natasha L. S. Jeffrey, Morgan Stores   +2 more
doaj   +1 more source

Metodología de modelación de escenarios de riesgo sísmico en Managua, Nicaragua

Nexo, 2010
The research methodology for seismic risk scenarios modeling in Managua, Nicaragua was carried out by the CENTRAL AMERICA SEISMIC RISK REDUCTION PROJECT (RESIS II) in phase II under the auspices of the center for disaster prevention in Central America ...
A. Ugarte
doaj   +1 more source

Seismic Microzonation of Tehran based on deterministic seismic hazard analysis and seismic indexes around faults [PDF]

Journal of Structural and Construction Engineering, 2017
Tehran has situated over several active faults such as Mosha, North Tehran, North Ray and South Ray faults and has experienced strong earthquakes in its history.
Hamid Saffari, Mohammad Hossein Pouladvand   +1 more
doaj   +1 more source

A Two Zone Synchrotron Model for the Knots in the M87 Jet

, 2008
The flux and the spectral index in X-ray energy band from the knots of M87 jet as observed by {\it{Chandra}} indicate a possible synchrotron origin but cannot be explained by simple one zone models with continuous injection of non-thermal electrons.
Aharonian, Aharonian, Atoyan, Benbow, Bhattacharyya, Biretta, Biretta, De Young, Fleishman, Georganopoulos, Georganopoulos, Ginzburg, Hardcastle, Hardcastle, Hardcastle, Hardee, Harris, Heavens, Honda, Jaffe, Kardashev, Kirk, Lenain, Li, Liu, Majumdar, Marshall, Meisenheimer, Meisenheimer, Neronov, Owen, Pacholczyk, Perlman, Perlman, Perlman, Pope, Rees, S. Sahayanathan, Sahayanathan, Sahayanathan, Sambruna, Sparks, Sreekumar, Stawarz, Stawarz, Stawarz, Tonry, Waters, Worrall   +48 more
core   +3 more sources

Electron acceleration in solar flares: theory of spectral evolution [PDF]

Astronomy & Astrophysics, 2006
Context: Stochastic acceleration is thought to be a key mechanism in the energization of solar flare electrons. Aims: We study whether stochastic acceleration can reproduce the observed soft-hard-soft evolution of the spectral features of the hard X-ray emitted by suprathermal electron.
Grigis, Paolo C., Benz, Arnold O.
openaire   +2 more sources