Results 71 to 80 of about 623,593 (284)

Experimental Studies on Electronic Configuration Mixing for the Even-Parity Levels of Gd I Using Isotope Shifts Recorded in the Visible Region with FTS

Journal of Spectroscopy, 2013
Electronic configuration (4f76s26p + 4f75d6s6p + 4f75d26p) mixing studies in the high even-parity energy levels of Gd I spectrum have been carried out on the basis of isotope shift (IS) data recorded in 49 spectral lines partially in the visible ...
B. K. Ankush, M. N. Deo
doaj   +1 more source

Concentration factor of metals in zooplankton and their seasonality in Kalpakkam coast, southwest Bay of Bengal

Environmental Chemistry and Ecotoxicology, 2020
Concentrations of 12 different trace elements (Cd, Ce, Co, Cr, Cu, Fe, La, Mn, Ni, Pb, U and Zn) in dissolved form and in tissue of mesozooplankton isolated from Klapakkam coast were analyzed, to understand their bioaccumulation potential.
Smita Achary, Satyanarayan Panigrahi, Rama Chandra Panigrahy, Rama Krishna Prabhu, Jayaraman Kula Sekar, Kamala Kanta Satpathy   +5 more
doaj   +1 more source

An atomic hydrogen beam to test ASACUSA's apparatus for antihydrogen spectroscopy

, 2015
The ASACUSA collaboration aims to measure the ground state hyperfine splitting (GS-HFS) of antihydrogen, the antimatter pendant to atomic hydrogen. Comparisons of the corresponding transitions in those two systems will provide sensitive tests of the CPT ...
Caradonna, Peter, Diermaier, Martin, Kolbinger, Bernadette, Malbrunot, Chloé, Massiczek, Oswald, Sauerzopf, Clemens, Simon, Martin C., Widmann, Eberhard, Wolf, Michael, Zmeskal, Johann   +9 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

THE SPECTROSCOPY OF THE PULSATING CARBON STAR R Lep

Odessa Astronomical Publications, 2017
The first results of detailed spectroscopy are presented for carbon Mira R Leporis. This long-period variable is undergoing deep fadings, apparently caused by dust formation around the star.
L. Zacs, O. Alksnis
doaj   +1 more source

Search for ultralight scalar dark matter with atomic spectroscopy

, 2015
We report new limits on ultralight scalar dark matter (DM) with dilaton-like couplings to photons that can induce oscillations in the fine-structure constant alpha.
Bougas, Lykourgos, Budker, Dmitry, Leefer, Nathan, Van Tilburg, Ken   +3 more
core   +1 more source

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

Atomic emission spectroscopy [PDF]

The relationship between the Slater-Condon theory and the conditions within the atom as revealed by experimental data was investigated. The first spectrum of Si, Rb, Cl, Br, I, Ne, Ar, and Xe-136 and the second spectrum of As, Cu, and P were determined ...
Andrew, K. H.
core   +1 more source

Quantitative proteomic analysis reveals different characteristics of bladder cancer cells after exposure to bisphenol A

FEBS Open Bio, EarlyView.
Bisphenol A (BPA), a common chemical in plastics, exerts dual effects on bladder cancer cells: low doses promote growth and migration, while high doses suppress growth and migration. Multi‐omics and bioinformatics reveal BPA acts via MAPK and inflammatory pathways.
Shaomin Niu, Lanlan Li, Wenjuan Jia, Hanzhong Feng, Xiaoquan Yu, Youli Zhao, Fengzhi Yuan, Hui Ding, Junqiang Tian, Yong‐Xing He, Zhiping Wang   +10 more
wiley   +1 more source

THE COOL GALACTIC R Coronae BOREALIS VARIABLE DY Persei

Odessa Astronomical Publications, 2017
DY Per (CGCS 372) was suspected to be an R CrB star based on the photometry by Alksnis (1994). Subsequent photometric monitoring revealed a number of sudden light declines typical for R CrB variables superimposed on the 792-day cycle of long-period ...
L. Zacs
doaj   +1 more source