834 research outputs found
Soil quality and farm profitability: A win-win situation
Farmers are more likely to adopt and adapt improved soil management strategies if their efforts lead to an immediate economic benefit. An encouraging policy environment, as well as farmer organisation also stimulates the adoption of conservation practices. In Mexico, farmers are adapting their maize-based cropping systems to conservation agriculture, leading to both higher profits and soil conservation
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AÂ Collaborative Research Framework to Collect Data for the Understanding of Coastal and Marine Ecosystems and FisheriesÂ
The Creative Class and the Creative Economy in Spain
This article describes an application in Spain of Florida's model (2002/Citation2010, Citation2005) about creativity, economy and growth. Creativity is an indicator that measures and combines technology, talent, and tolerance. Each of these is composed of three subindices. The most important conclusion from the data reported here is that creativity in particular, and growth in general, was less related to tolerance than the other two indices. However, the subindex of tolerance reflecting bohemia was important; the other two (foreigners and gays) were not
High frequency pCO2 monitoring in the Mediterranean coastal waters
Monitoring the Air-Sea pCO2 variability in the coastal areas is a priority
due to the effect of the biological and biogeochemistry process on this process. The
Northwestern Mediterranean Sea is an oligotrophic area in a semi-closed basin,
therefore the changes on the surface waters properties take place faster than in
other seas. This work focuses in the establishment of a pCO2 monitor system and
other related sensors at the OBSEA surface buoy.Peer Reviewe
Extracellular cysteine in connexins: Role as redox sensors
IndexaciĂłn: Scopus.Connexin-based channels comprise hemichannels and gap junction channels. The opening of hemichannels allow for the flux of ions and molecules from the extracellular space into the cell and vice versa. Similarly, the opening of gap junction channels permits the diffusional exchange of ions and molecules between the cytoplasm and contacting cells. The controlled opening of hemichannels has been associated with several physiological cellular processes; thereby unregulated hemichannel activity may induce loss of cellular homeostasis and cell death. Hemichannel activity can be regulated through several mechanisms, such as phosphorylation, divalent cations and changes in membrane potential. Additionally, it was recently postulated that redox molecules could modify hemichannels properties in vitro. However, the molecular mechanism by which redox molecules interact with hemichannels is poorly understood. In this work, we discuss the current knowledge on connexin redox regulation and we propose the hypothesis that extracellular cysteines could be important for sensing changes in redox potential. Future studies on this topic will offer new insight into hemichannel function, thereby expanding the understanding of the contribution of hemichannels to disease progression.http://journal.frontiersin.org/article/10.3389/fphys.2016.00001/ful
Experimental determination of the absorption strength in absorbing chaotic cavities
Due to the experimental necessity we present a formula to determine the
absorption strength by power losses inside a chaotic system (cavities, graphs,
acoustic resonators, etc) when the antenna coupling, always present in
experimental measurements, is taken into account. This is done by calculating
the average of the absorption coefficient as a function of the absorption
strength and the coupling of the antenna to the system, in the one channel
case.Comment: 6 pages, 3 figures, Submitted to Phys. Rev.
Long-distance radiative corrections to the di-pion tau lepton decay
We evaluate the model-dependent piece of O(alpha) long-distance radiative
corrections to tau^- \to \pi^- \pi^0\nu_{\tau} decays by using a meson
dominance model. We find that these corrections to the di-pion invariant mass
spectrum are smaller than in previous calculations based on chiral perturbation
theory. The corresponding correction to the photon inclusive rate is tiny
(-0.15%) but it can be of relevance when new measurements reach better
precision.Comment: 4 pages, 2 figures. An estimate of the shift produced in the
evaluation of the h.v.p. contribution to the muon anomalous magnetic moment
is added. Version to appear in Phys. Rev.
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