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Ratings and eye movements of emotion regulationGelow, Stefan January 2009 (has links)
People have different strategies to regulate and control their own emotions. For short-term emotion regulation of visual stimuli, cognitive reappraisal and attentional deployment are of relevance. The present study used self-ratings and eye-tracking data to replicate previous findings that eye movements are effective in emotion regulation. 25 participants (6 males) watched positive and negative pictures in an attend condition and a decrease emotion condition. They rated their emotional experience and their eye movements were followed with an eye-tracker. Ratings showed that they perceived pictures as less emotional in the decrease condition as compared to the attend condition both for positive and negative pictures. This decrease in ratings of emotional response was larger for positive than for negative pictures. Eye-tracking data showed no significant effect of emotion regulation condition. Further research is proposed to include self-ratings in studies of physiological changes due to emotion regulation, to differentiate between strategies of emotion regulation potentially used by participants.
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Synthesis of Stimuli-responsive Hydrogels from GlycerolSalehpour, Somaieh 18 January 2012 (has links)
Due to an increased environmental awareness and thus, concerns over the use of fossil-based monomer for polymer production, there is an ongoing effort to find alternatives to non-renewable traditional monomers. This has ushered in the rapid growth in the development of bio-based materials such as green monomers and biodegradable polymers from vegetable and animal resources. Glycerol, as a renewable bio-based monomer, is an interesting candidate for sustainable polymer production. Glycerol is a renewable material that is a by-product of the transesterification of vegetable oils to biodiesel. Utilization of the excess glycerol derived from the growing biodiesel industry is important to oleochemical industries. The main objective of this thesis was to produce high molecular weight polyglycerol from glycerol and synthesize stimuli-responsive polyglycerol hydrogels. The work began with an investigation of the step-growth polymerization of glycerol to relatively high molecular weight polyglycerol using several catalysts. The catalytic reaction mechanisms were compared and the polymer products were fully analyzed. High molecular weight partially branched polyglycerol with multimodal molecular weight distributions was obtained. The polymerization of glycerol proceeded fastest with sulphuric acid as catalyst as indicated by the highest observed conversion of monomer along with the highest molecular weights. Theoretical models were used to predict the gel point and to calculate monomer functionality. High molecular weight polyglycerol was used to synthesize novel stimuli-responsive hydrogels. Real-time monitoring of step-growth polymerization of glycerol was investigated using in-line and off-line Attenuated Total Reflectance/Fourier Transform infrared (ATR-FTIR) technique.
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Synthesis of Stimuli-responsive Hydrogels from GlycerolSalehpour, Somaieh 18 January 2012 (has links)
Due to an increased environmental awareness and thus, concerns over the use of fossil-based monomer for polymer production, there is an ongoing effort to find alternatives to non-renewable traditional monomers. This has ushered in the rapid growth in the development of bio-based materials such as green monomers and biodegradable polymers from vegetable and animal resources. Glycerol, as a renewable bio-based monomer, is an interesting candidate for sustainable polymer production. Glycerol is a renewable material that is a by-product of the transesterification of vegetable oils to biodiesel. Utilization of the excess glycerol derived from the growing biodiesel industry is important to oleochemical industries. The main objective of this thesis was to produce high molecular weight polyglycerol from glycerol and synthesize stimuli-responsive polyglycerol hydrogels. The work began with an investigation of the step-growth polymerization of glycerol to relatively high molecular weight polyglycerol using several catalysts. The catalytic reaction mechanisms were compared and the polymer products were fully analyzed. High molecular weight partially branched polyglycerol with multimodal molecular weight distributions was obtained. The polymerization of glycerol proceeded fastest with sulphuric acid as catalyst as indicated by the highest observed conversion of monomer along with the highest molecular weights. Theoretical models were used to predict the gel point and to calculate monomer functionality. High molecular weight polyglycerol was used to synthesize novel stimuli-responsive hydrogels. Real-time monitoring of step-growth polymerization of glycerol was investigated using in-line and off-line Attenuated Total Reflectance/Fourier Transform infrared (ATR-FTIR) technique.
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En doftstimulerad möbelbutik : En studie om olfaktoriska stimulis påverkan på kunders produktutvärderingSandner, Dominic, Sjödoff, Emma January 2013 (has links)
Forskningsfråga Påverkas kunders utvärdering av produkten vid införseln av olfaktoriska stimuli? Syfte Vi har för avsikt att beskriva, analysera och diskutera om införsel av olfaktoriska stimuli påverkar kundernas produktutvärdering i en butik. Metodik Uppsatsen utgår från en kvantitativansats och använder sig av deduktion. Metodi-kvalet beror på att grunden till rapporten är baserad på hypoteser som författarna har valt att pröva, med hjälp av ett fältexperiment. Slutsats Rapporten kommer till slutsatsen att doftstimuli inte påverkar kunders produktutvärdering vid införseln av olfaktoriska stimuli i en möbelbutik.
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The servicescape and the effects on interaction : A case study of Clas OhlsonPeters, Thomas, Twint, Vincent January 2011 (has links)
No description available.
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Generating a Consistent Framework for Evaluating Cell Response to External Stimuli through Epigenetic AssessorsWang, Bo 2011 May 1900 (has links)
Mesenchymal stem cells are more and more widely used in tissue engineering due to their pluripotency and no relative ethical problems. Traditional characterization techniques to detect mesenchymal stem cell states include flow cytometry, gene expressing profiling and immunohistochemistry. However, these methods can only provide transient and low level information from current RNA or protein levels about mesenchymal stem cells, which may cause problems when predicting the possible downstream lineages they will commit into.
We have developed chromatin immunoprecipitation (ChIP)-based epigenetic technique to detect mesenchymal stem cell states. For the systems we tested, this epigenetic assessor successfully characterized cell state changes and gave similar results obtained from gene expression profiling or protein expression assay. This epigenetic technique can provide information about mesenchymal stem cells states from a more fundamental chromatin level, which is promising for predicting future lineages from current states.
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Stimuli-Tailored Dispersion State of Aqueous Carbon Nanotube Suspensions and Solid Polymer NanocompositesEtika, Krishna 2010 December 1900 (has links)
Nanoparticles (such as, carbon nanotubes, carbon black, clay etc.) have one or
more dimensions of the order of 100 nm or less. Owing to very high van der Waals force
of attraction, these nanoparticles exist in a highly aggregated state. It is often required to
break these aggregates to truly experience the “nanosize” effect for any required end use.
There are several strategies proposed for dispersing/exfoliating nanoparticles but limited
progress has been made towards controlling their dispersion state. The ability to tailor
nanoparticle dispersion state in liquid and solid media can ultimately provide a powerful
method for tailoring the properties of solution processed nanoparticle-filled polymer
composites.
This dissertation reports the use of a variety of stimuli-responsive polymers to
control the dispersion state of single-walled carbon nanotubes. Stimuli-responsive
polymers exhibit conformational transitions as a function of applied stimulus (like pH,
temp, chemical etc.). These variations in conformations of the polymer can be used tailor
nanotube dispersion state in water and solid composites.The use of pH and temperature responsive polymers to stabilize/disperse single walled carbon nanotubes (SWNTs) in
water is presented. Non-covalent functionalization of SWNTs using pH and temperature
responsive polymer show tailored dispersion state as a function of pH and temperature,
respectively. Carbon nanotube microstructure in these aqueous suspensions was
characterized using several techniques (cryo-TEM, viscosity measurements, uv-vis
spectroscopy, zeta potential measurements and settling behavior). Furthermore, nanotube
dispersion state in aqueous suspensions is preserved to a large extent in the composites
formed by drying these suspensions as evidenced by SEM images and electrical
conductivity measurements. Based on the results obtained a mechanism is proposed to
explain the tailored dispersion of SWNTs as a functions of applied external stimulus
(i.e., pH, temperature). Such stimuli-controlled dispersion of carbon nanotubes could
have a variety of applications in nanoelectronics, sensing, and drug and gene delivery
systems. Furthermore, this dissertation also contains a published study focused on
controlling the dispersion state of carbon black (CB) in epoxy composites using clay.
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Studies on Auditory Rhythm Activation of Human Brain by Functional Magnetic Resonance Imaging on a 3-Tesla SystemPai, Kuo-liang 21 July 2006 (has links)
Recently functional magnetic resonance imaging has become popular in the studies of human brain functions. As the area of auditory cortex has been proven and defined, we consider music cognition as the next step. In this study, we focus on the response of rhythm. Professional musicians and amateurs were involved in our experiments.
Our preliminary result revealed that three of professional musicians have distinguished activation on left cerebrum Inferior Frontal Gyrus BA45/BA47 (language areas). However, since the subjects¡¦ background is difficult to be strictly controlled, further discussion is necessary to define meaning and brain functions of our experiments.
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Feline odor-induced anxiety in post-partum female ratsGerde, Karen D. January 2010 (has links) (PDF)
Thesis (M.S. in pharmacology and toxicology)--Washington State University, May 2010. / Title from PDF title page (viewed on July 23, 2010). "Graduate Program in Pharmacology and Toxicology." Includes bibliographical references (p. 25-30).
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Neural circuitry underlying expression of fos-like immunoreactivity in intermediate nucleus of the solitary tract following expression of taste aversion learning /Spray, Kristina Jean, January 2002 (has links)
Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (leaves 112-132).
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