Results 131 to 140 of about 92,694 (289)

A Theoretical Investigation of He i Line Profiles for the Spectroscopic Analysis of DB White Dwarfs

The Astrophysical Journal
We present a comprehensive investigation of He i line profile calculations used in the spectroscopic analyses of DB white dwarfs. Our study includes an in-depth photometric and spectroscopic analysis of all DB white dwarfs in Data Release 17 of the Sloan
Patrick Tremblay, Pierre Bergeron, Alain Beauchamp   +2 more
doaj   +1 more source

Data on Stark Broadening of Sn II Spectral Lines

Data
Data on spectral line widths and shifts broadened by interactions with charged particles, for 44 lines in the spectrum of ionized tin, for collisions with electrons and H II and HeII ions, are presented as online available tables.
Milan S. Dimitrijević, Magdalena D. Christova, Cristina Yubero, Sylvie Sahal-Bréchot   +3 more
doaj   +1 more source

Regularities in stark broadening parameters

Fizika : a journal of experimental and theoretical physics, 1974
Existence of regularities and systematic trends of Stark broadening parameters has been indicated using semiempirical formulae of Griem for width and shift of spectral lines. The relationship between Stark broadening parameters and nuclear charge was found and these regularities were illustrated by the experimental results for elements belonging to ...
Purić, J., Ćirković, Lj., Labat, J.
openaire   +1 more source

Core-polarization Effects for the Stark Broadening of Pb III Spectral Lines: Predictions and Regularities [PDF]

, 2010
Using a semi-classical approach, we have calculated values of the Stark broadening parameters for several lines of Pb III. Stark widths and shifts are presented for an electron density of 1017 cm¿ 3 and temperatures T = 11000-100000 K.
Alonso Medina, Aurelia, Colón Hernández, Cristóbal, Zanón Ballesteros, Antonio   +2 more
core   +1 more source

Data on Stark Broadening of N V Spectral Lines

Data
A data set on Stark broadening parameters defining the Lorentzian line profile (spectral line widths and shifts) for 31 multiplets of four-times-charged nitrogen ion (N V), with lines broadened by impacts with electrons (e), protons (p), He II ions, α ...
Milan S. Dimitrijević, Magdalena D. Christova, Sylvie Sahal-Bréchot   +2 more
doaj   +1 more source

Optimized Selenium‐Doped Nanocomposites for Enhanced Polymer Gel Performance in Permeability Reduction

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Excessive water production in mature oil fields necessitates robust shut‐off treatments, yet conventional polymer gels often fail under high‐temperature and high‐salinity conditions. This study aims to enhance gel thermal stability and mechanical strength by incorporating selenium‐doped Ag/AgO–ZnO nanocomposites synthesized via a novel green ...
Fadhil F. Sead, Farag M. A. Altalbawy, M. Sudhakara Reddy, Badri Narayan Sahu, Sridharan Sundharam, Sanjeev Kumar, Atreyi Pramanik, Aseel Smerat, Fatimah Pashtun   +8 more
wiley   +1 more source

Activism as education in and through the youth climate justice movement

British Educational Research Journal, EarlyView.
Abstract Young people worldwide are increasingly participating in a global movement for climate justice, yet to date, little research has examined how youth climate justice activists conceive of and experience activism as education. The present study used in‐depth, semi‐structured interviews with 16 US climate justice activists (aged 15–17) to address ...
Carlie D. Trott
wiley   +1 more source

Making teaching an attractive profession: What are the challenges and opportunities for minority ethnic teachers in England?

British Educational Research Journal, EarlyView.
Abstract This paper explores the challenges and opportunities surrounding the recruitment and retention of minority ethnic teachers in England. Drawing on interview data from 33 teachers and school leaders of diverse ethnic backgrounds, it investigates whether racialised barriers identified in earlier research have shifted in the current context of ...
Antonina Tereshchenko, Feyisa Demie, Stephen Gorard, Yiyang Gao, Beng Huat See, Nadia Siddiqui   +5 more
wiley   +1 more source

Hong Kong's non‐local undergraduate recruitment: Policies, institutional practices and student perspectives

British Educational Research Journal, EarlyView.
Abstract Beneath the Hong Kong government's enthusiasm for recruiting non‐local undergraduates—including students from the Chinese Mainland and other international regions—lies a longstanding gap in understanding the core meanings and drivers shaping the territory's expanding focus on inward international student mobility (ISM).
Fang Gao, Wei Yan Xiong, Hei‐hang Hayes Tang, Xiao Han   +3 more
wiley   +1 more source

‘Sometimes, I would look at my books and cry because I felt like I was left behind’: Understanding the learning of Indigenous girls during the COVID‐19 pandemic in the districts of Chongwe and Solwezi in Zambia

British Educational Research Journal, EarlyView.
Abstract Grounded in principles of epistemic justice, this article examines the educational impacts of Zambia's COVID‐19 school closures on Indigenous girls in two districts and highlights community‐led pathways for resilience. National responses prioritised broadcast and digital delivery but presupposed access to electricity, digital devices and ...
Marcellus Forh Mbah, Leigh Jarvis, Ane Turner Johnson, Chidi Ezegwu, Priscillah Nsama, Austine Nakanga   +5 more
wiley   +1 more source