Results 1 to 10 of about 63,277 (118)

Relationship between hypochondriasis and clinical self-efficacy in nursing students: A cross-sectional multi-institutional study. [PDF]

open access: yesJ Educ Health Promot
BACKGROUND: Psychological factors, such as anxiety, depression, and self-esteem, can significantly impact nursing students’ clinical self-efficacy.
Fotokian Z   +4 more
europepmc   +2 more sources

The Poincaré map of degenerate monodromic singularities with Puiseux inverse integrating factor

open access: yesAdvances in Nonlinear Analysis, 2023
We consider analytic families of planar vector fields depending analytically on the parameters in Λ\Lambda that guarantee the existence of a (may be degenerate and with characteristic directions) monodromic singularity.
García Isaac A., Giné Jaume
doaj   +1 more source

On the Integrability of Quasihomogeneous Systems and Quasidegenerate Infinity Systems

open access: yesAdvances in Difference Equations, 2007
The integrability of quasihomogeneous systems is considered, and the properties of the first integrals and the inverse integrating factors of such systems are shown.
Hu Yanxia
doaj   +2 more sources

Cross-Sectional Blood Metabolite Markers of Hypertension: A Multicohort Analysis of 44,306 Individuals from the COnsortium of METabolomics Studies

open access: yesMetabolites, 2022
Hypertension is the main modifiable risk factor for cardiovascular morbidity and mortality but discovering molecular mechanisms for targeted treatment has been challenging. Here we investigate associations of blood metabolite markers with hypertension by
Panayiotis Louca   +20 more
doaj   +1 more source

Mendelian Randomization With Refined Instrumental Variables From Genetic Score Improves Accuracy and Reduces Bias

open access: yesFrontiers in Genetics, 2021
Mendelian randomization (MR) can estimate the causal effect for a risk factor on a complex disease using genetic variants as instrument variables (IVs). A variety of generalized MR methods have been proposed to integrate results arising from multiple IVs
Lijuan Lin   +23 more
doaj   +1 more source

Obesity as a Condition Determined by Food Addiction: Should Brain Endocannabinoid System Alterations Be the Cause and Its Modulation the Solution?

open access: yesPharmaceuticals, 2021
Obesity is a complex disorder, and the number of people affected is growing every day. In recent years, research has confirmed the hypothesis that food addiction is a determining factor in obesity. Food addiction is a behavioral disorder characterized by
Marialuisa de Ceglia   +3 more
doaj   +1 more source

Recent Advances in the Laser Radiation Transport through the Head Tissues of Humans and Animals – A Review

open access: yesJournal of Biomedical Photonics & Engineering, 2020
Modern studies of the penetration of light into biological tissues is becoming very important in various medical applications. This is an important factor for determining the optical dose in many diagnostic and therapeutic procedures.
Alaa Sabeeh, Valery V. Tuchin
doaj   +1 more source

Polynomial Inverse Integrating Factors, First Integral and Non-Existence of Limit Cycles in the Plane for Quadratic Systems

open access: yesScience Journal of University of Zakho, 2017
The main purpose of this paper is to study the existence of polynomial inverse integrating factor and first integral, and non-existence of limit cycles for all systems. Furthermore, we consider some applications.
Ahmed M. Hussien
doaj   +1 more source

On the Shape of Limit Cycles That Bifurcate from Isochronous Center

open access: yesThe Scientific World Journal, 2014
New idea and algorithm are proposed to compute asymptotic expression of limit cycles bifurcated from the isochronous center. Compared with known inverse integrating factor method, new algorithm to analytically computing shape of limit cycle proposed in ...
Guang Chen, Yuhai Wu
doaj   +1 more source

Scattering and absorption properties of biomaterials for dental restorative applications [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
The physical understanding of the optical properties of dental biomaterials is mandatory for their final success in restorative applications. Light propagation in biological media is characterized by the absorption coefficient, the scattering coefficient,
Fernández-Oliveras A.   +2 more
doaj   +1 more source

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