Results 81 to 90 of about 865,582 (335)

First integrals of ordinary linear differential systems [PDF]

arXiv, 2012
The spectral method for building first integrals of ordinary linear differential systems is elaborated. Using this method, we obtain bases of first integrals for linear differential systems with constant coefficients, for linear nonautonomous differential systems integrable in closed form (algebraic reducible systems, triangular systems, the Lappo ...
arxiv  

Renal fibrosis in feline chronic kidney disease: known mediators and mechanisms of injury [PDF]

, 2015
Chronic kidney disease (CKD) is a common medical condition of ageing cats. In most cases the underlying aetiology is unknown, but the most frequently reported pathological diagnosis is renal tubulointerstitial fibrosis.
Elliott, J, Jepson, R E, Lawson, J S, Syme, H M, Wheeler-Jones, C P D   +4 more
core   +1 more source

Unveiling the Secret Chemistry of Street Art by a Multitechnique Approach

ChemPlusChem, EarlyView.
Two murals created in 2021 in Bari, Italy, have been analyzed by attenuated total reflection Fourier‐transform infrared spectroscopy, reversed‐phase liquid chromatography coupled with UV‐Vis and electrospray ionization mass spectrometry (MS), laser desorption ionization MS, pyrolysis–gas chromatography/MS.
Elena C. L. Rigante, Francesca Modugno, Jacopo La Nasa, Silvia Pizzimenti, Tommaso R. I. Cataldi, Cosima D. Calvano   +5 more
wiley   +1 more source

THE CORRELATION BETWEEN THE RENIN AT ALDOSTERONE SYSTEM – ARTERIAL HYPERTENSION AND HORMONAL MECHANISMS

Romanian Journal of Oral Rehabilitation
The aim of this study was to evaluate the effect of the renin- angiotensin- aldosterone system on blood pressure from a hormonal perspective. Additionally, the correlation between cardiovascular pathology and the mechanisms of this system was examined.
Liviu Stafie, Cristina Maria Gavrilescu, Cristian Cojocaru, Elena Cojocaru, Cristina Oprisa, Luiza Pohaci Antonesei, Norin Forna, Roxana Mihaela Barbu   +7 more
doaj   +1 more source

A novel mechanism of action for angiotensin-(1-7) via the angiotensin type 1 receptor [PDF]

, 2016
No abstract ...
Nicklin, Stuart A.
core   +1 more source

Autopsy findings in cases of fatal COVID‐19 vaccine‐induced myocarditis

ESC Heart Failure, EarlyView.
Abstract COVID‐19 vaccines have been linked to myocarditis, which, in some circumstances, can be fatal. This systematic review aims to investigate potential causal links between COVID‐19 vaccines and death from myocarditis using post‐mortem analysis.
Nicolas Hulscher, Roger Hodkinson, William Makis, Peter A. McCullough   +3 more
wiley   +1 more source

Complex Systems + Systems Engineering = Complex Systems Engineeri [PDF]

arXiv, 2006
One may define a complex system as a system in which phenomena emerge as a consequence of multiscale interaction among the system's components and their environments. The field of Complex Systems is the study of such systems--usually naturally occurring, either bio-logical or social.
arxiv  

Neuro-hormonal effects of physical activity in the elderly. [PDF]

, 2013
Thanks to diagnostic and therapeutic advances, the elderly population is continuously increasing in the western countries. Accordingly, the prevalence of most chronic age-related diseases will increase considerably in the next decades, thus it will be ...
Allocca, E, Bonaduce, D, D'Amico, L, de Lucia, C, Femminella, GD, Ferrara, N, Formisano, R, Iacotucci, P, Pagano, G, Petraglia, L, Ratto, E, Rengo, C, Rengo, G   +12 more
core   +1 more source

Systemic aging fuels heart failure: Molecular mechanisms and therapeutic avenues

ESC Heart Failure, Volume 12, Issue 2, Page 1059-1080, April 2025.
Abstract Systemic aging influences various physiological processes and contributes to structural and functional decline in cardiac tissue. These alterations include an increased incidence of left ventricular hypertrophy, a decline in left ventricular diastolic function, left atrial dilation, atrial fibrillation, myocardial fibrosis and cardiac ...
Zhuyubing Fang, Umar Raza, Jia Song, Junyan Lu, Shun Yao, Xiaohong Liu, Wei Zhang, Shujuan Li   +7 more
wiley   +1 more source

Systems of quotients of Lie triple systems [PDF]

Communications in Algebra, 42(2014)(8), 3339-3349, 2013
In this paper, we introduce the notion of system of quotients of Lie triple systems and investigate some properties which can be lifted from a Lie triple system to its systems of quotients. We relate the notion of Lie triple system of Martindale-like quotients with respect to a filter of ideals and the notion of system of quotients, and prove that the ...
arxiv