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81.
N. Kirova 《Journal of Superconductivity and Novel Magnetism》2009,22(6):559-563
The charge density wave (CDW) can be strained by applied voltage or by charge transfer at junctions, or by an electric field
which can also put the CDW into sliding. Strains can give rise to local or long-range modulational instabilities. Their recent
identification in K0.3MoO3 (Le Bolloc’h et al. in Phys. Rev. Lett. 100:096403, 2008) was provided by a new method of coherent micro diffraction, accessible at the modern synchrotron irradiation sources. We
present the plausible scenario of the observed phenomena, related to formation of solitonic lattices, perform the numerical
modeling, and compare the results with the experimental data. 相似文献
82.
We investigated effects of two plant secondary metabolites (PSMs), cineole and gallic acid, on the nightly feeding behavior of the common brushtail possum (Trichosurus vulpecula), a generalist folivore. We tested whether possums altered their feeding behavior in response to increasing levels of cineole, a dietary terpene. Possums were fed artificial diets containing three levels of cineole; zero (basal diet), medium (6.8% of total dry matter, DM), and high (15.3% DM). In another experiment, we introduced gallic acid, a dietary phenolic, into the diets. Possums were offered a Choice PSM diet (cineole and gallic acid diets simultaneously) or a No-Choice PSM diet (containing either cineole or gallic acid). Detoxification products of cineole and gallic acid were examined in urine to determine that different detoxification pathways were utilized in the elimination of each compound. With increasing cineole levels, possums ate less, had smaller feeding bouts, and had a lower rate of intake, but did not extend their total nightly feeding time. Possums offered the Choice PSM diet, compared with the No-Choice diets, ate more, had larger feeding bouts, and tended to increase their rate of intake. Results from the urinary analysis indicated that gallic acid and cineole were not involved in competing detoxification pathways in brushtail possums. There was also a significant sex effect: females ate more overall, ate more per feeding bout, and ate at a higher rate than males. These results indicate that PSMs not only constrain overall intake, but that possums alter their feeding behavior in response to them. Altered feeding patterns may reduce the negative influence of PSMs on intake. 相似文献
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Orr Scott P.; Metzger Linda J.; Lasko Natasha B.; Macklin Michael L.; Peri Tuvia; Pitman Roger K. 《Canadian Metallurgical Quarterly》2000,109(2):290
Differential conditioning was assessed in 15 medication-free individuals meeting Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American Psychiatric Association, 1994) criteria for chronic posttraumatic stress disorder (PTSD) and 18 trauma-exposed individuals who never developed PTSD (non-PTSD). Conditioned stimuli (CSs) were colored circles, and the unconditioned stimulus was a "highly annoying" electrical stimulus. Individuals with PTSD had higher resting heart rate (HR) and skin conductance (SC) levels and produced larger SC orienting responses. During conditioning, the PTSD group showed larger differential SC, HR, and electromyogrant responses to the reinforced vs. nonreinforced stimuli (CS+ vs. CS-) compared with the non-PTSD group. Only PTSD participants continued to show differential SC responses to CS+ vs. CS- during extinction trials. Results suggest that individuals with PTSD have higher sympathetic nervous system arousal at the time of conditioning and are more conditionable than trauma-exposed individuals without PTSD. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
86.
There has been a gap between the prolific attachment theory and research literature and a relative paucity of guidance about how to apply attachment theory to clinical practice. AEDP (Accelerated Experiential-Dynamic Psychotherapy) explicitly fills this theory/practice gap. This article will explore three aspects of clinical practice that foster secure attachment bonds, and will also address what kind of therapist an attachment therapist is. It will outline the importance of nonverbal communication; it will start to catalogue what I call experiential language: specific words and interventions that are evocative of experience and emotion. Finally it will assert that self-disclosure is an essential attachment-creating intervention, and it will explain the importance of metaprocessing and Metatherapeutic processing to titrate therapeutic interactions moment-to-moment in session and to promote metacognitional thinking as well. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
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Radial basis functions (RBFs) can be seen as a major generalization of pseudospectral (PS) methods, abandoning the orthogonality of the basis functions and in return obtaining much improved simplicity and geometric flexibility. Spectral accuracy becomes now easily available also when using completely unstructured node layouts, permitting local node refinements in critical areas. The first major PDE applications for which RBFs have been shown to compete successfully against the best currently available numerical approaches can be found in the geosciences. Examples that are discussed here include translating vortex roll-ups (cyclogenesis), nonlinear flows on the sphere modeled by the shallow water equations, and 3D convection in the earth’s mantle. 相似文献
89.
Nicholas C. Herbert Nicholas J. Thyer Sarah J. Isherwood Natasha Merat 《Cognition, Technology & Work》2016,18(2):393-402
This study assessed whether the increased demand of listening in hearing impaired individuals exacerbates the detrimental impact of auditory distraction on a visual task (useful field of view test), relative to normally hearing listeners. Auditory distraction negatively affects this visual task, which is linked with various driving performance outcomes. Hearing impaired and normally hearing participants performed useful field of view testing with and without a simultaneous listening task. They also undertook a cognitive test battery. For all participants, performing the visual and auditory tasks together reduced performance on each respective test. For a number of subtests, hearing impaired participants showed poorer visual task performance, though not to a statistically significant extent. Hearing impaired participants were significantly poorer at a reading span task than normally hearing participants and tended to score lower on the most visually complex subtest of the visual task in the absence of auditory task engagement. Useful field of view performance is negatively affected by auditory distraction, and hearing loss may present further problems, given the reductions in visual and cognitive task performance suggested in this study. Suggestions are made for future work to extend this study, given the practical importance of the findings. 相似文献
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