Search results for "STRAIN"
showing 10 items of 1955 documents
Johtajien työn eettinen kuormittavuus ja sen yhteydet työhyvinvointiin
2011
Tutkimuksessa selvitetiin suomalaisten johtajien työn eettistä kuormittavuutta kahden kuvaajan avulla. Ensinnäkin tutkittiin, kuinka usein johtajat kohtaavat työssään eettisesti haastavia tilanteita, joihin liittyy kokemus eettisestä dilemmasta (johtaja ei tiedä, mikä on oikea toimintatapa tai tietää, mutta joutuu syystä tai toisesta toimimaan sääntöjen, normien tai arvojen vastaisesti). Toiseksi selvitetiin, kuinka stressaaviksi johtajat nämä tilanteet kokevat. Tutkimuksessa selvitettiin lisäksi eettisen kuormittavuuden yhteyttä johtajien työhyvinvointiin (työuupumus ja työn imu) sekä eettisten dilemmojen yleisyyttä johtamistyön eri tilanteissa. Kaikkiaan 902 eri alojen johtajaa ympäri Suo…
Temporal constraints and creativity in bass lines of eminent jazz musicians
2023
Tämän eksploratiivisen tutkimuksen ensimmäisenä päätavoitteena on selvittää, miten päätöksentekoon ja toiminnan suunnitteluun käytettävissä oleva aika (esitettävän musiikin tempon ja harmonisen rytmin mukaan mitattuna) on yhteydessä luovuuteen huipputason jazzbasistien bassolinjoissa, kun luovuutta mitataan sävelkuvioiden vaihtelevuutena. Tutkimuksen toisena päätavoitteena on selvittää, onko laajan tietovaraston oppiminen välttämätön edellytys luovuudelle bassolinjojen rakentamisen yhteydessä. Aineisto koostuu 42:sta Paul Chambersin ja Ron Carterin bassolinjan nuotinnoksesta, joissa kaikki neljäsosanuoteista poikkeavat sävelkestot on joko poistettu tai muutettu neljäsosanuoteiksi. Aineiston…
Benchmark study of undrained triaxial testing of Opalinus Clay shale: Results and implications for robust testing
2021
Triaxial testing of argillaceous rocks and shales is significantly more challenging than conventional rock mechanical testing. The challenges are mainly related to the very low permeability of these geomaterials, and their sensitivity to exposure of atmosphere and brines, which induces variations of water content, suction and effective stress. There are currently no international standards to guide service laboratories for robust testing procedures for shales. A benchmark study of undrained triaxial testing was therefore initiated with three leading service laboratories in shale testing, performing 13 tests and using two different methods of establishing sample saturation prior to deformati…
Behavioral and psychological flexibility in eating regulation among overweight adults
2016
Weight-loss programs are often based on self-control techniques and they commonly fail in long-term weight management. Identifying psychological processes that explain eating behaviors can help to develop more effective interventions for long-term weight management. This research examined how behavioral and psychological flexibility are related to eating regulation and weight management in overweight adults. The first goal was to study the effects of flexible vs. rigid restraint of eating on weight-loss maintenance and well-being. The second goal was to examine whether psychological flexibility and mindfulness, independently and together, explain intuitive eating regulation. The third goal …
Does Psychological Detachment From Work Protect Employees under High Intensified Job Demands?
2021
Technological acceleration is intensifying job demands (IJDs), referring to work intensification, intensified job- and career-related planning and decision-making demands, and intensified learning demands at work. IJDs mean new challenges for workers but recovery from work during off-job time through psychological detachment from work may help employees to maintain their well-being in the context of IJDs. The present study examined the associations between IJDs and emotional exhaustion and the buffering role of psychological detachment in these relationships. Cross-sectional data were collected from four Finnish trade unions in 2018 (N = 3,181). Data were analyzed by structural equation mod…
Tenascin gene expression in rat liver and in rat liver cells. In vivo and in vitro studies.
1991
Tenascin is a major glycoprotein constituent of the extracellular matrix with a strong affinity to fibronectin; its distribution is believed to be temporarily and spatially limited. Tenascin gene expression is increased during wound healing processes. As repair mechanisms in chronic liver diseases resemble wound healing we studied tenascin gene expression in rat liver and in isolated rat liver cells. In normal rat liver a tenascin specific antiserum stains sinusoidal cells with fiber-like prolongations, which at the same time are desmin-positive (ITO-cells). In the CCl4-acutely-damaged liver a strong tenascin staining is detected in cells located among the mononuclear cells of the inflammat…
The Measurement of Large Strains Using Electrical Resistance Strain Gages
2011
It is well known that in the range of large strains, the electrical resistance strain gages have a nonlinear behavior, that is the variation of electrical resistance is a nonlinear function of the strain applied to the strain gage, which means that the gage factor K is not constant. Also, the Wheatstone bridge has a nonlinear behavior at large strains. Usually the two nonlinearities have opposite effects, therefore the overall nonlinearity decreases. This article presents an overview of the behavior of strain gages subject to large strains and of the corrections to account for nonlinearities of both the strain gage and the Wheatstone bridge.
A common virulence plasmid in biotype 2 Vibrio vulnificus and its dissemination aided by a conjugal plasmid.
2007
ABSTRACT Strains of Vibrio vulnificus , a marine bacterial species pathogenic for humans and eels, are divided into three biotypes, and those virulent for eels are classified as biotype 2. All biotype 2 strains possess one or more plasmids, which have been shown to harbor the biotype 2-specific DNA sequences. In this study we determined the DNA sequences of three biotype 2 plasmids: pR99 (68.4 kbp) in strain CECT4999 and pC4602-1 (56.6 kb) and pC4602-2 (66.9 kb) in strain CECT4602. Plasmid pC4602-2 showed 92% sequence identity with pR99. Curing of pR99 from strain CECT4999 resulted in loss of resistance to eel serum and virulence for eels but had no effect on the virulence for mice, an anim…
Effects of LHRH, progesterone, estradiol-17 ? and dexamethasone in vitro on pineal synaptic ribbons and serotonin N-acetyltransferase activity in die…
1991
Pineal glands of regularly cycling Sprague Dawley rats (180-220 g) killed on the diestrous morning (between 0900-1000 h) were incubated in appropriate media for six hours with LHRH (8.5 microM), progesterone (3.2 microM), estradiol-17 beta (370 nM) or dexamethasone (250 nM). Pineals incubated in hormone-free medium and unincubated glands served as controls. Six rats were used in each group. After incubation the glands were divided into two parts. One part was used to estimate serotonin N-acetyltransferase (NAT) activity. The other part was processed for electron microscopy to quantify synaptic ribbons (SR). The SR numbers were computed to 20,000 microns 2 area of pineal tissue. The number a…
Effects of sulphonylureas on spontaneous motility and induced contractions in rat isolated uterus
1986
Abstract To clarify the action of sulphonylureas on calcium, the effect of tolbutamide and ghbenclamide has been investigated on a Ca-dependent process, the contractile activity of uterine smooth muscle. Both sulphonylureas antagonized the contractions evoked by CaCl2 in a non-competitive manner when the uterus was maintained in depolarizing solution and did not affect the spontaneous contractions of rat uterus. The capacity of tolbutamide and ghbenclamide to relax vanadate-induced contraction of rat uterus in Ca-free medium suggests that sulphonylureas may have an intracellular site of action related to cytosolic free Ca levels, or effect a reduction in Ca action.