Results 61 to 70 of about 713,380 (292)

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Balance-Of-Payments-Constrained Growth Model: Empirical Evidence from Malaysia

open access: yesInternational Journal of Management Studies, 2005
Applying cointegration approach, the present study aims to examine the validity of the Harrod Thirlwall balance-of-payments-constrained growth model in Malaysia.
Tuck Cheong Tang
doaj  

Public debt and inflation nexus in Nigeria: An ARDL bounds test approach

open access: yesCogent Economics & Finance, 2021
Inflationary tendencies of public debt have been the cause of an unsettling debate among policymakers in Nigeria. Using the autoregressive distributed lag (ARDL) framework, this study attempts to investigate the impact of total public debt on inflation ...
Akingbade U. Aimola   +1 more
doaj   +1 more source

Quantum Property Testing for Bounded-Degree Graphs [PDF]

open access: yes, 2011
We study quantum algorithms for testing bipartiteness and expansion of bounded-degree graphs. We give quantum algorithms that solve these problems in time O(N^(1/3)), beating the Omega(sqrt(N)) classical lower bound. For testing expansion, we also prove an Omega(N^(1/4)) quantum query lower bound, thus ruling out the possibility of an exponential ...
Ambainis, Andris   +2 more
openaire   +2 more sources

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

open access: yesFEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang   +8 more
wiley   +1 more source

A Generalized Variance Bounds Test

open access: yes, 1987
This paper presents a two-country overlapping generations model in which financial intermediation arises endogenously as an incentive-compatible means of economizing on monitoring costs. Because of the existence of transactions costs, money markets in the two countries are segmented and investors have differential access to international credit markets.
openaire   +4 more sources

Testing Abelian dyon–fermion bound system

open access: yesPhysics Letters B, 2002
13 pages. Phys. Lett. B (in press)
openaire   +2 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Finite-Sample Simulation-Based Tests in Seemingly Unrelated Regressions [PDF]

open access: yes
In this paper, we propose finite and large sample likelihood based test procedures for possibly non-linear hypotheses on the coefficients of SURE systems. Two complementary approaches are described.
Dufour, Jean-Marie, Khalaf, Lynda
core   +3 more sources

GLS-based unit root tests for bounded processes [PDF]

open access: yesEconomics Letters, 2013
We show that the use of generalized least squares (GLS) detrending procedures leads to important empirical power gains compared to ordinary least squares (OLS) detrending method when testing the null hypothesis of unit root for bounded processes. The non-centrality parameter that is used in the GLS-detrending depends on the bounds, so that improvements
Carrión i Silvestre, Josep Lluís   +1 more
openaire   +3 more sources

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