Results 41 to 50 of about 8,815,514 (254)

Use of diamond sensors for a high-flux, high-rate X-ray pass-through diagnostic

Journal of Synchrotron Radiation, 2022
X-ray free-electron lasers (XFELs) deliver pulses of coherent X-rays on the femtosecond time scale, with potentially high repetition rates. While XFELs provide high peak intensities, both the intensity and the centroid of the beam fluctuate strongly on a
J. Bohon, E. Gonzalez, C. Grace, C. T. Harris, B. Jacobsen, S. Kachiguine, D. Kim, J. MacArthur, F. Martinez-McKinney, S. Mazza, M. Nizam, N. Norvell, R. Padilla, E. Potter, T. Prakash, E. Prebys, E. Ryan, B. A. Schumm, J. Smedley, D. Stuart, M. Tarka, I. S. Torrecilla, M. Wilder, D. Zhu   +23 more
doaj   +1 more source

Collective space-charge phenomena in the source region [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2004
Abstract For many devices space-charge-dominated behavior, including the excitation of space-charge collective modes, can occur in the source region, even when the downstream characteristics are not space-charge-dominated. Furthermore, these modes can remain undamped for many focusing periods. Traditional studies of the source region in particle beam
Haber, I., Bernal, S., Celata, C. M., Friedman, A., Grote, D. P., Kishek, R. A., Quinn, B., O'Shea, P. G., Reiser, M., Vay, J. L.   +9 more
openaire   +2 more sources

Generalizing "Charge without Charge" to Obtain Classical Analogs of Short-Range Interactions [PDF]

, 2007
Several decades ago, Wheeler and Misner presented a model of electric charge ("charge without charge") based on the topological trapping of electric field lines in wormholes.
Sharlow, Mark
core  

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Space Charge Dynamics in Polyimide Based Nanocomposites [PDF]

, 2010
Polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties and extending their applications. In polymer nanocomposites, chemically dissimilar components are combined at the nanometer scale, and stronger interactions ...
Dang, Zhimin, Zha, Junwei, Chen, George
core   +2 more sources

Study on Single Event Effects of Enhanced GaN HEMT Devices under Various Conditions

Micromachines
GaN HEMT devices are sensitive to the single event effect (SEE) caused by heavy ions, and their reliability affects the safe use of space equipment. In this work, a Ge ion (LET = 37 MeV·cm2/mg) and Bi ion (LET = 98 MeV·cm2/mg) were used to irradiate ...
Xinxiang Zhang, Yanrong Cao, Chuan Chen, Linshan Wu, Zhiheng Wang, Shuo Su, Weiwei Zhang, Ling Lv, Xuefeng Zheng, Wenchao Tian, Xiaohua Ma, Yue Hao   +11 more
doaj   +1 more source

The effect of titanium (IV) chloride surface treatment to enhance charge transport and performance of dye-sensitized solar cell

Results in Physics, 2019
In this study, the photovoltaic and electrochemical characteristics of the dye-sensitised solar cell (DSSC) after titanium (IV) chloride (TiCl4) treatment on a TiO2 photoelectrode were investigated.
N. Fadzilah M. Sharif, Suhaidi Shafie, M.Z.A. Ab. Kadir, W.Z. Wan Hasan, Muhammad Norhaffis Mustafa, Buda Samaila   +5 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Modeling of ballistic and trapping effects on the collection efficiency of holes and electrons separately for a planar mercuric iodide detector (HgI2)

Journal of Radiation Research and Applied Sciences, 2016
For the room temperature nuclear detector application, signal created in the detector depends not only to the energy of the incident photon but also to the position of the interaction.
Cedric E. Beogo, Ousmane I. Cisse, Luc T. Bambara, Francois Zougmore   +3 more
doaj   +1 more source