Results 41 to 50 of about 17,066 (190)

Dynamics of Tm–Ho energy transfer and deactivation of the F43 low level of thulium in fluorozirconate glasses [PDF]

Journal of Applied Physics, 2004
The mechanism involved in the Tm3+ (3F4)→Ho3+ (5I7) energy transfer and Tm3+ (3H4, 3H6)→Tm3+ (3F4, 3F4) cross relaxation as a function of the donor and acceptor concentrations was investigated in Tm–Ho-codoped fluorozirconate glasses. The experimental transfer rates were determined for the Tm→Ho energy transfer from the best fit of the acceptor ...
L. D. da Vila, L. Gomes, L. V. G. Tarelho, S. J. L. Ribeiro, Y. Messaddeq   +4 more
openaire   +1 more source

Growth effect of income inequality in sub-Saharan Africa: exploring the transmission channels

International Journal of Management and Economics, 2020
Sub-Saharan Africa (SSA) ranks as the second most unequal region globally (in terms of income distribution), harboring 10 of the 19 most unequal countries in the world.
Odusanya Ibrahim Abidemi, Akinlo Anthony Enisan   +1 more
doaj   +1 more source

Emerging Change: Exploring the New Economy Paradigm

ECONOMICS, 2022
This paper examines and ascertains the dominant and latent characteristics of the new economy post COVID-19. It acknowledges the far-reaching repercussions and long-term societal and economic impacts caused by COVID-19.
Rao K.V.Ch.Madhu Sudhana, Kolluru Mythili, Hyams-Ssekasi Denis   +2 more
doaj   +1 more source

Inversión pública y privada en México: ¿motores complementarios del crecimiento económico?

El Trimestre Económico, 2021
El presente artículo analiza la evolución de la formación bruta de capital fijo en México, en especial, las interacciones entre la privada y la pública, y su relación con el ritmo de crecimiento económico en el periodo de 1960 a 2018.
Francisco Salvador Gutiérrez Cruz, Juan Carlos Moreno Brid, Joaquín Sánchez Gómez   +2 more
doaj   +1 more source

Orientifolds of Non-Supersymmetric Asymmetric Orbifolds [PDF]

, 1998
We consider certain four dimensional supersymmetric and non-supersymmetric asymmetric orbifolds with vanishing cosmological constant up to two loops and gauge the world sheet parity transformation.
Antoniadis, Berkooz, Bianchi, Bianchi, Bianchi, Gimon, Harvey, Kachru, Kachru, Kachru, Kakushadze, Lars Görlich, Ralph Blumenhagen, Scherk, Sen, Sen, Sen, Shin, Shiu, Vafa, Witten   +20 more
core   +2 more sources

Local Lattice Distortion Caused by Short Range Charge Ordering in LiMn$_2$O$_4$

, 2013
We have performed powder neutron diffraction on $^7$Li-enriched sample of LiMn$_2$O$_4$ at 300 K. The crystal structure determined by Rietveld analysis is a cubic spinel with space group of $Fd\bar{3}m$ in which all Mn atoms are crystallograghically ...
Igawa, Naoki, Ikeda, Kazutaka, Kaneko, Naokatsu, Kodama, Katsuaki, Oshita, Hidetoshi, Otomo, Toshiya, Shamoto, Shin-ichi, Suzuya, Kentaro   +7 more
core   +1 more source

The tiny globulettes in the Carina Nebula [PDF]

, 2014
Small molecular cloudlets are abundant in many H II regions surrounding newborn stellar clusters. In optical images these so-called globulettes appear as dark silhouettes against the bright nebular background.
Gahm, Gösta, Grenman, Tiia
core   +1 more source

A detailed investigation of anxiety disorders in children of clinically anxious parents: a population‐based study

Journal of Child Psychology and Psychiatry, EarlyView.
Background We assessed the risk of anxiety disorders in children of clinically anxious parents, focusing on the influence of parent and child sex, parental care level, depressive comorbidity, and anxiety subtype, while controlling for socioeconomic factors and other parental psychiatric conditions.
Sigrid Elfström, Susanne Wicks, Christina Dalman, Johan Åhlén   +3 more
wiley   +1 more source

Relating hygroscopicity and composition of organic aerosol particulate matter [PDF]

, 2010
A hygroscopicity tandem differential mobility analyzer (HTDMA) was used to measure the water uptake (hygroscopicity) of secondary organic aerosol (SOA) formed during the chemical and photochemical oxidation of several organic precursors in a smog chamber.
Aiken, Allison C., Alfarra, M. Rami, Baltensperger, Urs, Barmpadimos, Iakovos, Canagaratna, Manjula R., Collins, Donald R., DeCarlo, Peter F., Dommen, Josef, Duplissy, Jonathan, Gysel, Martin, Jimenez, Jose Luis, Metzger, Axel, Prevot, André Stephan Henry, Tomlinson, Jason M., Tritscher, Torsten, Weingartner, Ernest, Worsnop, Douglas R.   +16 more
core   +2 more sources

Knock knock, who's there? Identifying wild species‐specific fish sounds with passive acoustic localization and random forest models

Journal of Fish Biology, EarlyView.
Abstract Passive acoustic monitoring (PAM) is a useful non‐destructive tool for evaluating species presence, diversity and abundance. However, in marine environments, a dearth of tools and methods for identifying wild, species‐specific fish calls makes quantitative PAM assessments for specific fish species challenging.
Darienne Lancaster, Xavier Mouy, Dana Haggarty, Francis Juanes   +3 more
wiley   +1 more source