Results 71 to 80 of about 165,251 (282)

Fear of COVID-19 and future anxiety among Polish university students during a pandemic

open access: yes, 2023
Background The pandemic poses a threat to human health and life, and anxiety is the most common psychological problem occurring during the COVID-19 pandemic.
Monika Guszkowska, Anna Bodasińska
core   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Role of Economic Policy Uncertainty in the Connectedness of Cross-Country Stock Market Volatilities

open access: yesMathematics, 2020
The implied volatility index is a forward-looking indicator of fear among stock market participants. We examine the extent to which the connectedness of fear among global stock markets is driven by the cross-country connectedness of economic policy ...
Mudassar Hasan   +4 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Is Latin America Overcoming its Fear of Floating? [PDF]

open access: yes
This paper analyzes the evolution of fear of floating (FOF) and its effect on output in Chile, Colombia and Mexico. It shows that there has been a gradual rise in exchange-rate volatility as the period of floating lengthens in each country.
Carlos AIbarra
core  

Fear or greed? What does a skewness index measure?

open access: yes, 2016
The h h (CBOE) SKEW index is designed to capture investors’ fear in the US stock market. In this paper we pursue two objectives. First, we investigate the properties of the CBOE SKEW index in order to assess whether it captures fear or greed in the ...
Elyasiani, E.   +2 more
core   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Simple Expected Volatility (SEV) Index: Application to SET50 Index Options [PDF]

open access: yes
In 2003, the Chicago Board Options Exchange (CBOE) made two key enhancements to the volatility index (VIX) methodology based on S&P options. The new VIX methodology seems to be based on a complicated formula to calculate expected volatility.
Michael McAleer   +1 more
core  

A Reativação de um traço de memória condicionada aversiva a partir da estimulação química da matéria cinzenta periaquedutal dorsal [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Farmacologia, Florianópolis, 2011O medo excessivo é a principal característica dos transtornos de ansiedade.
Mochny, Cristiane Rezende
core  

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

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