Results 51 to 60 of about 1,034,226 (285)

An in-depth study of the pre-polar candidate WX Leonis Minoris [PDF]

, 2006
Optical photometry, spectroscopy, and XMM-Newton ultraviolet and X-ray observations with full phase coverage are used for an in-depth study of WXLMi, a system formerly termed a low-accretion rate polar.
A. D. Schwope, B. T. Gänsicke, Beuermann, Beuermann, Beuermann, Bragaglia, Chabrier, Chanmugam, Cropper, Cruz, Delfosse, Fischer, Friend, Gänsicke, Gänsicke, Hagen, J. Vogel, Kirkpatrick, Leggett, Li, Liebert, Martín, Nauenberg, Pallavicini, Panei, Piters, Pizzolato, Reimers, Reimers, Schmidt, Schreiber, Schwarz, Schwope, Schwope, Silvestri, Szkody, Townsley, Vennes, Walkowicz, West, Wickramasinghe, York   +41 more
core   +3 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

The Chandra Multi-Wavelength Project: Optical Spectroscopy and the Broadband Spectral Energy Distributions of X-ray Selected AGN [PDF]

, 2012
From optical spectroscopy of X-ray sources observed as part of ChaMP, we present redshifts and classifications for a total of 1569 Chandra sources from our targeted spectroscopic follow up using the FLWO, SAAO, WIYN, CTIO, KPNO, Magellan, MMT and Gemini ...
Aldcroft, Tom, Barkhouse, Wayne, Cameron, Robert A., Constantin, Anca, Ellison, Sara L., Foltz, Craig, Green, Paul J., Haggard, Daryl, Jannuzi, Buell T., Kim, Dong-Woo, Marshall, Herman L., Mossman, Amy, Perez, Laura M., Romero-Colmenero, Encarni, Ruiz, Angel, Silverman, John D., Smith, Malcolm G., Smith, Paul S., Torres, Guillermo, Trichas, Markos, Wik, Daniel R., Wilkes, Belinda J., Wolfgang, Angie   +22 more
core   +2 more sources

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

X-ray astronomical spectroscopy [PDF]

The current status of the X-ray spectroscopy of celestial X-ray sources, ranging from nearby stars to distant quasars, is reviewed. Particular emphasis is placed on the role of such spectroscopy as a useful and unique tool in the elucidation of the ...
Holt, S. S.
core   +4 more sources

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

Electronic structure and magnetism of the diluted magnetic semiconductor Fe-doped ZnO nano-particles

, 2009
We have studied the electronic structure of Zn$_{0.9}$Fe$_{0.1}$O nano-particles, which have been reported to show ferromagnetism at room temperature, by x-ray photoemission spectroscopy (XPS), resonant photoemission spectroscopy (RPES), x-ray absorption
Chang, F. -H., Chen, C. T., Dasgupta, I., Fujimori, A., Huang, D. J., Karmakar, D., Kataoka, T., Kobayashi, M., Lin, H. -J., Mandal, S. K., Nath, T. K., Ohkochi, T., Okane, T., Saitoh, Y., Sakamoto, Y., Song, G. S., Takeda, Y., Tanaka, A., Yamagami, H.   +18 more
core   +1 more source

Development of a Prediction Model for Progression Risk in High‐Grade Gliomas Based on Habitat Radiomics and Pathomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu, Yuxi Gong, Weilin Xu, Xingjian Sun, Gefei Jiang, Lei Qiu, Kexin Shi, Mengxing Wu, Yinjiao Fei, Jinling Yuan, Jinyan Luo, Yurong Li, Yuandong Cao, Minhong Pan, Shu Zhou   +14 more
wiley   +1 more source

Attosecond x-ray transient absorption spectroscopy in graphene

Physical Review Research, 2021
Real-time observations of the coherent electron dynamics induced by ultrashort light pulses in condensed-matter systems have remained elusive due to limitations in existing attosecond devices.
Giovanni Cistaro, Luis Plaja, Fernando Martín, Antonio Picón   +3 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source