506 research outputs found

    Effects of a feeding strategy to increase intramuscular fat content of pork under the conditions of organic farming

    Get PDF
    In an ongoing study, the effect of the implementation of a specific feeding strategy using a high portion of home-grown grain legumes on the intramuscular fat (IMF) content of pork, is assessed under different conditions on organic farms in Germany and Austria. Preliminary results indicate that variation in the IMF content seems to be higher between farms than between treatments within each farm

    Drosophila olfactory receptors as classifiers for volatiles from disparate real world applications

    Get PDF
    Olfactory receptors evolved to provide animals with ecologically and behaviourally relevant information. The resulting extreme sensitivity and discrimination has proven useful to humans, who have therefore co-opted some animals' sense of smell. One aim of machine olfaction research is to replace the use of animal noses and one avenue of such research aims to incorporate olfactory receptors into artificial noses. Here, we investigate how well the olfactory receptors of the fruit fly, Drosophila melanogaster, perform in classifying volatile odourants that they would not normally encounter. We collected a large number of in vivo recordings from individual Drosophila olfactory receptor neurons in response to an ecologically relevant set of 36 chemicals related to wine ('wine set') and an ecologically irrelevant set of 35 chemicals related to chemical hazards ('industrial set'), each chemical at a single concentration. Resampled response sets were used to classify the chemicals against all others within each set, using a standard linear support vector machine classifier and a wrapper approach. Drosophila receptors appear highly capable of distinguishing chemicals that they have not evolved to process. In contrast to previous work with metal oxide sensors, Drosophila receptors achieved the best recognition accuracy if the outputs of all 20 receptor types were used

    Wide range and tunable linear TMR sensor using two exchange pinned electrodes

    Full text link
    A magnetic tunnel junction sensor is proposed, with both the detection and the reference layers pinned by IrMn. Using the differences in the blocking temperatures of the IrMn films with different thicknesses, crossed anisotropies can be induced between the detection and the reference electrodes. The pinning of the sensing electrode ensures a linear and reversible output. It also allows tuning both the sensitivity and the linear range of the sensor. The authors show that the sensitivity varies linearly with the ferromagnetic thickness of the detection electrode. It is demonstrated that an increased thickness leads to a rise of sensitivity and a reduction of the operating range

    Associations between Depressive Symptoms, Rumination, Overgeneral Autobiographical Memory and Interpretation Bias within a Clinically Depressed Sample

    Get PDF
    __Abstract__ There is ample research demonstrating that biases in cognitive processes, such as a negative interpretation bias, rumination, and overgeneral autobiographical memory, are potential vulnerability factors for depression. However, a key limitation is that most studies conducted so far have studied cognitive biases in depression in isolation. Therefore our goal was to explore whether or not interpretation bias, overgeneral autobiographical memory, and rumination are present and interrelated in depressive outpatients. In this explorative study we examined the relationship between negative interpretation bias, rumination, overgeneral autobiographical memory, and severity of depression in clinically depressed outpatients. According to our expectations a negative interpretation bias and rumination were associated with severity of depression. Moreover, overgeneral autobiographical memory was not associated with severity of depression, but seemed to be associated with diagnosis of depression. A negative interpretation bias, overgeneral autobiographical memory, and rumination were not significantly related with each other in this study. This finding suggests they are not strongly related and might be largely distinct vulnerability factors for depression. The study presents an important yet preliminary finding which warrants further replication with a larger sample size
    • …
    corecore