Search results for "Movement"
showing 10 items of 2021 documents
Biometric Measures for Interactive Advertising Research
2011
ABSTRACTModern marketers seek new research paradigms to explore preconscious, nonverbal stages of consumer behavior, often turning to brain science because some mental processes, particularly those underlying conscious awareness, may be better understood by analyzing neurophysiological reactions. A new discipline, consumer neuroscience, thus examines the brain and its functioning in a marketing context. This article demonstrates how consumer neuroscience can contribute to existing marketing knowledge, with a focus on two methods: electroencephalography (EEG) and eye-tracking. In interactive environments, it is ideal to administer brain wave analyses in parallel with observations of eye move…
Historyczny rozwój katolickiego obrazu Marcina Lutra
2018
Katolicki obraz Marcina Lutra na przestrzeni wieków ewoluował od zdecydowanie negatywnego w czasie reformacji i w wiekach następnych, poprzez próby teologicznie i historycznie pogłębionych analiz inspirowanych ruchem ekumenicznym, aż po współczesną akceptację wielu jego teologicznych postulatów. Współczesne kierunki rzymskokatolickiego myślenia o Lutrze dobrze streszczają historycznie wyważone i dogmatycznie pogłębione opinie ostatnich papieży: Jana Pawła II, Benedykta XVI i Franciszka. Idąc za tekstami uzgodnień Komisji luterańsko-katolickiej na forum światowym, ekumenicznie otwarci papieże potrafią dostrzec w Marcinie Lutrze człowieka głęboko religijnego, świadka Ewangelii, którego myśl t…
Climate of Opinion as a Driver of Collective Action: Evidence From the 2011 Israeli Social Protest Movement
2018
What drives mass mobilization? A substantial body of theoretical work in diverse fields, including political science, communications, sociology, and economics, is built around the idea that an individual’s willingness to participate in a mobilization is driven by her beliefs about public opinion – that is, about what the majority of the public thinks. Despite the centrality of this idea, rigorous empirical evidence is scarce. We test this idea using original data collected during and after the massive street protests in Israel in the summer of 2011. Our analysis shows that individual beliefs about average societal support for the protest movement (i.e., the “climate of opinion”) are indeed …
Comparison of spring characteristics of titanium-molybdenum alloy and stainless steel
2017
Background Titanium-molybdenum alloy (TMA) and stainless steel (SS) wires are commonly used in orthodontics as arch-wires for tooth movement. However, plastic deformation phenomenon in these arch-wires seems to be a major concern among orthodontists. This study aimed to compare the mechanical properties of TMA and SS wires with different dimensions. Material and Methods Seventy-two wire samples (36 TMA and 36 SS) of three different sizes (19×25, 17×25 and 16×22) were analyzed in vitro, with 12 samples in each group. Various mechanical properties of the wires, including spring-back, bending moment and stiffness were determined using a universal testing machine. Student’s t-test showed statis…
Folic acid-functionalized graphene oxide nanosheets via plasma etching as a platform to combine NIR anticancer phototherapy and targeted drug deliver…
2020
PEGylated graphene oxide (GO) has shown potential as NIR converting agent to produce local heat useful in breast cancer therapy, since its suitable photothermal conversion, high stability in physiological fluids, biocompatibility and huge specific surface. GO is an appealing nanomaterial for potential clinical applications combining drug delivery and photothermal therapy in a single nano-device capable of specifically targeting breast cancer cells. However, native GO sheets have large dimensions (0.5-5 mu m) such that tumor accumulation after a systemic administration is usually precluded. Herein, we report a step-by-step synthesis of folic acid-functionalized PEGylated GO, henceforth named…
Scaffolds based on hyaluronan crosslinked with a polyaminoacid: Novel candidates for tissue engineering application
2008
New porous scaffolds, with a suitable hydrolytic and enzymatic degradation, useful for tissue engineering applications have been obtained by a carbodiimide mediated reaction between hyaluronan (HA) and a synthetic polymer with a polyaminoacid structure such as α,β-polyaspartylhydrazide (PAHy). Scaffolds with a different molar ratio between PAHy repeating units and HA repeating units have been prepared and characterized from a chemical and physicochemical point of view. Tests of indirect and direct cytotoxicity, cell adhesion, and spreading on these biomaterials have been performed by using murine L929 fibroblasts. The new biomaterials showed a good cell compatibility and ability to allow ce…
Survival and differentiation of embryonic neural explants on different biomaterials
2006
Biomaterials prepared from polyacrylamide, ethyl acrylate (EA), and hydroxyethyl acrylate (HEA) in various blend ratios, methyl acrylate and chitosan, were tested in vitro as culture substrates and compared for their ability to be colonized by the cells migrating from embryonic brain explants. Neural explants were isolated from proliferative areas of the medial ganglionic eminence and the cortical ventricular zone of embryonic rat brains and cultured in vitro on the different biomaterials. Chitosan, poly(methyl acrylate), and the 50% wt copolymer of EA and HEA were the most suitable substrates to promote cell attachment and differentiation of the neural cells among those tested. Immunofluor…
Two-photon high-speed light-sheet volumetric imaging of brain activity during sleep in zebrafish larvae
2020
Although it is well known that zebrafish display the behavioural signature of sleep, the neuronal correlates of this state are not yet completely understood, due to the complexity of the measurements required. For example, when performed with visible excitation light, functional imaging can disrupt the day/night cycle due to the induced visual stimulation. To address this issue, we developed a custom-made two-photon light-sheet microscope optimized for high-speed volumetric imaging. By employing infra-red light (not visible to the larva) for excitation, we are able to record wholebrain neuronal activity with high temporal- and spatial-resolution without affecting the sleep state. In two-pho…
Toxicity of gold-nanoparticles: Synergistic effects of shape and surface functionalization on micromotility of epithelial cells
2010
Nanoparticle exposure is monitored by a combination of two label-free and non-invasive biosensor devices which detect cellular shape and viscoelasticity (quartz crystal microbalance), cell motility and the dynamics of epithelial cell-cell contacts (electric cell-substrate impedance sensing). With these tools we have studied the impact of nanoparticle shape on cellular physiology. Gold (Au) nanoparticles coated with CTAB were synthesized and studied in two distinct shapes: Spheres with a diameter of (43 ± 4) nm and rods with a size of (38 ± 7) nm × (17 ± 3) nm. Dose-response experiments were accompanied by conventional cytotoxicity tests as well as fluorescence and dark-field microscopy to v…
Attachement and spreading of fibroblasts on an RGD peptide-modified injectable hyaluronan hydrogel
2004
Hyaluronan (HA) hydrogels resist attachment and spreading of fibroblasts and most other mammalian cell types. A thiol-modified HA (3,3'-dithiobis(propanoic dihydrazide) [HA-DTPH]) was modified with peptides containing the Arg-Gly-Asp (RGD) sequence and then crosslinked with polyethylene glycol (PEG) diacrylate (PEGDA) to create a biomaterial that supported cell attachment, spreading, and proliferation. The hydrogels were evaluated in vitro and in vivo in three assay systems. First, the behavior of human and murine fibroblasts on the surface of the hydrogels was evaluated. The concentration and structure of the RGD peptides and the length of the PEG spacer influenced cell attachment and spre…