Results 81 to 90 of about 8,270,598 (302)

Individual strategy ratings improve the control for task difficulty effects in arithmetic problem solving paradigms

open access: yesFrontiers in Psychology, 2015
Mental arithmetic is a powerful paradigm to study problem solving using neuroimaging methods. However, the evaluation of task complexity varies significantly across neuroimaging studies.
Nadja eTschentscher, Olaf eHauk
doaj   +1 more source

Protocol for quantifying miRNA trafficking across the endosomal membrane

open access: yesFEBS Open Bio, EarlyView.
An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh   +2 more
wiley   +1 more source

Oregon Problem Gambling Awareness Week 2003

open access: yes, 2003
Signs of a problem gambler -- For parents : signs of a possible gambling problem in youth -- For educators : signs of a possible gambling problem in students -- Older adults and gambling -- Problem gambling, signs and symptoms -- Problem gambling and the

core  

On the solvability of the Sturm – Liouville problem, nonlinear in the spectral parameter

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки
Background. The paper studies the solvability of the Sturm-Liouville problem, which is nonlinear in the spectral parameter. The problem is studied on a segment with boundary conditions of the third kind. Materials and methods.
G.V. Chalyshov
doaj   +1 more source

Oscillatory solutions of the Cauchy problem for linear differential equations

open access: yesElectronic Journal of Differential Equations, 2015
We consider the Cauchy problem for second and third order linear differential equations with constant complex coefficients. We describe necessary and sufficient conditions on the data for the existence of oscillatory solutions. It is known that in the
Gro Hovhannisyan, Oliver Ruff
doaj  

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

open access: yesFEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer   +7 more
wiley   +1 more source

A study on one algebraic equation of the product equaling unit

open access: yes四川大学学报. 自然科学版, 2016
In this paper, we consider the relationship between the Deligne-Simpson problem and the Hurwitz enumeration problem. First, we observe that they are the solutions of the same algebraic equation on different groups, which the algebraic equation is (A_1 ...
LI Sha-Sha, ZHENG Quan
doaj  

Recent insights into the molecular mechanism of ubiquinol oxidation by cytochrome bc1

open access: yesFEBS Open Bio, EarlyView.
The review reflects on the mechanism of the catalytic reaction in cytochrome bc1: the electron bifurcation that involves the separation of two electrons derived from the quinol oxidation to opposite sides of the enzyme across the membrane. This review summarizes the long‐standing effort to understand the mechanism of quinol oxidation catalyzed by ...
Anna Wójcik‐Augustyn   +2 more
wiley   +1 more source

Generalizations of the Goursat and Darboux – Goursat – Baudot problems in spaces of generalized functions of infinite order [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The article investigates the fundamental continuation problem for generalized solutions of systems of linear differential equations with constant coefficients P(D)u=0 in a multidimensional parallelepiped $\pi \subset \mathbb{R}^n$.
Berdimuratov, Amangeldi Muchtarovich
doaj   +1 more source

A nationwide student survey on biochemistry learning resources in Italy

open access: yesFEBS Open Bio, EarlyView.
We conducted a survey among Italian university students to investigate their preferred study materials for biochemistry. We then analyzed the collected data to identify these materials. This information may be valuable to the Biochemistry educational community. The graphical abstract was created with Claude (Opus 5.5; Anthropic, 2026).
Anna Marabotti   +4 more
wiley   +1 more source

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