Results 101 to 110 of about 1,219,269 (316)

Effect of duration of hypertension on heart rate variability

open access: yesNational Journal of Physiology, Pharmacy and Pharmacology, 2019
Background: Hypertension is the most prevalent noncommunicable disease. It is a multisystem disorder that affects many organs of the body including cardiovascular system, and it markedly increases both morbidity and mortality in the population ...
Jyothi S, Mangala Gowri S R
doaj   +1 more source

DSGE Models in the Frequency Domain [PDF]

open access: yesSSRN Electronic Journal, 2012
We exploit well-known features of the frequency domain to estimate a medium-scale DSGE model on different frequency bands. We study whether fit, parameter estimates and forecasting performance depend on the frequency band over which the model is estimated.
openaire   +1 more source

α‐Synuclein aggregation landscape from phase separation to neurotoxic intermediates

open access: yesFEBS Letters, EarlyView.
Alpha‐synuclein aggregation in Parkinson's disease involves a complex landscape of transient intermediates, including oligomers, fibrils and liquid–liquid phase separation (LLPS). A view is emerging in which LLPS maturation into solid‐like condensates may contribute to the formation of neurotoxic species.
Silvia Arino   +2 more
wiley   +1 more source

Wavelength Tuneable Frequency Domain Photon Migration Spectrometer for Tissue-like Media

open access: yes, 2010
Frequency domain spectrometers use intensity modulated light to quantitatively interrogate turbid media. The modulation frequencies employed are in the radiofrequency range. Intensity modulated light launched into a turbid medium generates photon density
Cletus, Biju
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

Equivalence analysis of dielectric test methods in time domain and frequency domain

open access: yesInternational Journal of Electrical Power & Energy Systems
Wideband dielectric response is crucial for accurate assessment of insulation condition. However, time-domain measurements such as polarization and depolarization current (PDC) tests often lose high-frequency components, while frequency domain ...
Lin Du, Xin Li, Shixian Hui, Chao Xing
doaj   +1 more source

Time and frequency domain in the business cycle structure

open access: yesAgricultural Economics (AGRICECON), 2012
The presented paper deals with the identification of cyclical behaviour of business cycle from the time and frequency domain perspective. Herewith, methods for obtaining the growth business cycle are investigated - the first order difference, the ...
Jitka POMĚNKOVÁ, Roman MARŠÁLEK
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Enhancing latent palmprints using frequency domain analysis

open access: yesIntelligent Systems with Applications
Latent palmprints are integral to crime scene investigations, constituting a significant portion of encountered prints. They often suffer from poor ridge impressions, noise, and pronounced creases, setting them apart from other palmprint types.
Javad Khodadoust   +5 more
doaj   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

open access: yesMolecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat   +8 more
wiley   +1 more source

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