Search results for "Bars"

Broken rotor bars detection via Park's vector approach based on ANFIS

2014

Many attempts have been made on fault diagnosis of induction motors based on frequency and time domain analysis of stator current. In this paper, first the Park's vector transformation and frequency analysis for fault detection of induction motors are introduced. Then a smart approach using Adaptive Neuro Fuzzy Inference System (ANFIS) is proposed. This approach uses the time domain features derived from the Park's vector transformation of stator current. By the proposed method, a partial break including 5 mm crack on a bar, one broken bar and two broken bars using experimental data are investigated. It will be shown that features derived from Park's vector compared to features obtained fro…

Pregnenolone sulfate, a naturally occurring excitotoxin involved in delayed retinal cell death.

2002

The present study was designed to investigate the neurosteroid pregnenolone sulfate (PS), known for its ability to modulate NMDA receptors and interfere with acute excitotoxicity, in delayed retinal cell death. Three hours after exposure of the isolated and intact retina to a 30-min PS pulse, DNA fragmentation as assessed by genomic DNA gel electrophoresis and a modified in situ terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end-labeling (TUNEL) method appeared concurrently with an increase in superoxide dismutase (SOD) activity and thiobarbituric acid-reactive substances (TBARS) levels. At 7 h, the increased amount of DNA laddering was accompanied by a higher number of TUN…

N-3 fatty acids modulate antioxidant status in diabetic rats and their macrosomic offspring.

2006

We investigated the role of dietary n-3 polyunsaturated fatty acids (n-3 PUFA) in the modulation of total antioxidant status in streptozotocin (STZ)-induced diabetic rats and their macrosomic offspring. Female wistar rats, fed on control diet or n-3 PUFA diet, were rendered diabetic by administration of five mild doses of STZ on day 5 and were killed on days 12 and 21 of gestation. The macrosomic (MAC) pups were killed at the age of 60 and 90 days. Lipid peroxidation was measured as the concentrations of plasma thiobarbituric acid reactive substances (TBARS), and the total antioxidant status was determined by measuring (i) plasma oxygen radical absorbance capacity (ORAC), (ii) plasma vitami…

Effect of Running Exercise on Oxidative Stress Biomarkers: A Systematic Review

2021

Background: Exercise induced health benefits are limited by the overaccumulation of reactive oxygen species (ROS). ROS and further oxidative stress could potentially induce muscle damage which could result in poor exercise performance. However, predicting ROS induced oxidative stress in response to endurance training has several limitations in terms of selecting biomarkers that are used to measure oxidative stress.Objective: The purpose of this study was to systematically investigate the suitable biomarkers that predict oxidative stress status among runners.Methods: According to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement, a search for relevant …

Regulation of raft-derived endocytic pathways : studies on echovirus 1 and baculovirus

2009

Elina Kakkonen tutki väitöskirjassaan kahden erilaisen viruksen, echovirus 1:n ja bakuloviruksen soluun sisäänmenon reittejä ja säätelijöitä. Echovirus 1 (EV1) on ihmisiä infektoiva pikornavirus, joka voi aiheuttaa esimerkiksi aivokalvontulehdusta, sydänlihastulehdusta sekä lievempiä hengitystieinfektioita. Bakulovirus puolestaan on ihmisille vaaraton, hyönteisiä infektoiva virus, joka on osoittautunut lupaavaksi geeninsiirtokuljettajaksi geeniterapiassa.Virukset voivat käyttää soluun tunkeutumisessaan hyväkseen soluissa valmiina olevia erilaisia reittejä, joita solut itse tarvitsevat esimerkiksi ravintoaineiden sisäänottoon. Näin virukset pääsevät solun sisälle solun oman koneiston kuljett…

Etnolingwistyczne rozważania na temat przekładu na język angielski leksemów typu 'pierogi ruskie', 'barszcz ukraiński', 'fasolka po bretońsku', 'ryba…

2018

In today’s world, international tourism is one of the most quickly and dynamically developing sectors of economy. In the year 2012 – for the first time in the history of mankind – international tourist arrivals exceeded the milestone of one billion tourists globally, and within merely the 20 years’ time, i.e. between 1995 and 2015, the number of people travelling abroad as tourists more than d o u b l e d. The phenomenon also refers to the inbound tourism in Poland – with more than 16 million international tourists who visited our country in 2015. Obviously, on the one hand, the fact is highly beneficial to the state’s international prestige and economy, but on the other one – it does creat…

Is the single-state dominance realized in double-β-decay transitions?

1998

In the single-state-dominance hypothesis (SSDH) the decay rate of the two-neutrino double-\ensuremath{\beta} decay to the final ground state is solely determined by virtual single-\ensuremath{\beta}-decay transitions via the ${1}^{+}$ ground state of the intermediate nucleus. A very important consequence the SSDH will be that some of nonaccelerator measurements of double-\ensuremath{\beta}-decay observables could be circumvented by single-\ensuremath{\beta}-decay measurements. To assess the validity of the SSDH, we have carried out a theoretical analysis of all double-\ensuremath{\beta}-decay transitions where the spin-parity of the ground-state of the intermediate nucleus is ${1}^{+}$. The…

High-precision mass measurement ofS31with the double Penning trap JYFLTRAP improves the mass value forCl32

2010

Altered antioxidant-oxidant status in the aqueous humor and peripheral blood of patients with retinitis pigmentosa.

2013

Retinitis Pigmentosa is a common form of hereditary retinal degeneration constituting the largest Mendelian genetic cause of blindness in the developed world. It has been widely suggested that oxidative stress possibly contributes to its pathogenesis. We measured the levels of total antioxidant capacity, free nitrotyrosine, thiobarbituric acid reactive substances (TBARS) formation, extracellular superoxide dismutase (SOD3) activity, protein, metabolites of the nitric oxide/cyclic GMP pathway, heme oxygenase-I and inducible nitric oxide synthase expression in aqueous humor or/and peripheral blood from fifty-six patients with retinitis pigmentosa and sixty subjects without systemic or ocular …

The effect of enriching milk-based beverages with plant sterols or stanols on the fatty acid composition of the products

2013

Five plant sterol (PS)-enriched dairy products from the Spanish market were characterised for fatty acids (FA), volatile compounds and lipid stability. The ingredients used for PS enrichment by the food industry may come from different sources, thus influencing the composition and stability of the lipid fraction. In this study, the FA profile proved highly variable among samples, not agreeing with the nutritional labelling of the products. The volatile profile was characterised. A total of 55 volatile compounds were identified in the samples by GC–MS. Concentrations of hexanal (from 1.1 to 7.5 ng/g), nonanal (from 0.9 to 1.2 ng/g) and decane (from n.d. to 11.9 ng/g) indicated a low lipid ox…