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تعداد نتایج: 1842014 فیلتر نتایج به سال:
[1] In this paper, by using a dynamic model with synoptic eddy and low-frequency flow (SELF) interaction, we show that the SELF feedback is of significant importance for the formation of the AO/NAO in both winter and summer. Although background storm activity is significantly weaker in summer than that in winter, the positive SELF feedback associated with the AO/NAO mode in summer can be as str...
Three new anilido-oxazolines, ortho-C(6)H(4)(NHAr')(4,4-dimethyl-2-oxazoline) [Ar'=2,4,6-trimethylphenyl, HNPh(TriMe)Oxa (1); 2,6-diisopropylphenyl, HNPh(DiiPr)Oxa (2); 2-methoxyphenyl, HNPh(OMe)Oxa (3)], have been prepared. Reactions of 1 or 2 with one molar equivalent of ZnEt(2) in tetrahydrofuran or hexane solution give the zinc ethyl complexes (NPh(TriMe)Oxa)ZnEt (4) and (NPh(DiiPr)Oxa)ZnEt...
A survey of boneless hams processed in elastic rubber nettings showed that 32 of 59 contained over 100 ppb Nnitrosodibenzylamine (NDBzA) on the surface. These findings demonstrated the need to reduce the nitrosamine content. Nettings made with rubber thread reformulated with zinc diisobutyldithiocarbamate vulcanizing agent were evaluated for their effect on reducing the nitrosamine content. The...
PNA centers of action and differences in their magnitudes. In simulations of the future, both NAO and PNA magnitudes increase, with uncertainties related to the model response and emission scenarios. When assessing the influences of future NAO/PNA changes on regional winter temperature, it is found that the main factors are related to changes in the magnitude of the NAO Azores center and total ...
Animal responses to global climate variation might be spatially inconsistent. This may arise from spatial variation in factors limiting populations' growth or from differences in the links between global climate patterns and ecologically relevant local climate variation. For example, the North Atlantic Oscillation (NAO) has a spatially consistent relation to temperature, but inconsistent spatia...
Zinc porphyrins possessing three p-carboxyphenyl anchoring groups with various substituents were prepared by a facile three-step route in good yields. Zn1NH3A with electron donating and anti-aggregation meso substituents has achieved the highest efficiency of 6.10%. These porphyrins with three p-carboxyphenyl groups are more stable toward photo-bleaching than their single anchoring group analogs.
This project consists in the implementation of a teleoperation system of the arms of a NAO robot using the Kinect camera from Microsoft as a way to teach the robot by demonstration of preset movements. The concept proposes an innovative method that turns possible a control with high manipulation freedom, using completely non-invasive technology, by the means of a camera that is able to capture ...
We here present results and analysis from a study of affective tactile communication between human and humanoid robot (the NAO robot). In the present work, participants conveyed eight emotions to the NAO via touch. In this study, we sought to understand the potential for using a wearable affective (tactile) interface, or WAffI. The aims of our study were to address the following: (i) how emotio...
Following over 20 years of research on the climatic effects on biodiversity we now have strong evidence that climate change affects phenology, fitness, and distribution ranges of different taxa, including birds. Bird phenology likely responds to changes in local weather. It is also affected by climatic year-to-year variations on larger scales. Although such scale-related effects are common in e...
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