3,791 research outputs found
06261 Abstracts Collection -- Foundations and Practice of Programming Multi-Agent Systems
From 25.06.06 to 30.06.06, the Dagstuhl Seminar 06261 ``Foundations and Practice of Programming Multi-Agent Systems\u27\u27 was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl.
During the seminar, several participants presented their current
research, and ongoing work and open problems were discussed. Abstracts of
the presentations given during the seminar as well as abstracts of
seminar results and ideas are put together in this paper. The first section
describes the seminar topics and goals in general.
Links to extended abstracts or full papers are provided, if available
Vertical distribution and migration of fish larvae in the NW Iberian upwelling system during the winter mixing period: implications for cross-shelf distribution
The vertical distribution and vertical migrations of fish
larvae and implications for their cross-shelf distribution
were investigated in the northern limit of the NE
Atlantic upwelling region during the late winter mixing
period of 2012. The average positive values of the
upwelling index for February and March of this year
were far from normal, although the average hydrographic
conditions during the period of study were of
downwelling and the water column was completely
mixed. Fish larvae, most in the preflexion stage, were
concentrated in the upper layers of the water column
and their distribution was depth stratified, both day
and night. However, the larval fish community was
not structured in the vertical plane and fish larvae did
not show significant diel vertical migration (DVM),
although five species showed ontogenetic vertical
migration. In regions of coastal upwelling and in the
absence of DVM, the location of fish larvae in the
water column is crucial for their cross-shelf distribution.
Thus, the cross-shelf distribution of the six most
abundant species collected in this study can be
explained by the surface onshore flow associated with coastal downwelling, retaining larvae of the coastal
spawning species with a relatively shallow distribution
in the shelf region and transporting larvae of slope
spawning species onto the shelf. The wide vertical distribution
shown by larvae of the offshore spawning
species could be an adaptation of these species to
ensure that some larvae reach the inshore nursery
areasPlan Nacional de I+D+i (CRAMERCTM2010- 21856-CO3-02), Junta de Galicia (ECOPREGA-10MMA602021PR), Principado de Asturias (GRUPIN14-144)Postprint2,044
Comparison of the Airtraq® and Truview® laryngoscopes to the Macintosh laryngoscope for use by Advanced Paramedics in easy and simulated difficult intubation in manikins
<p>Abstract</p> <p>Background</p> <p>Paramedics are frequently required to perform tracheal intubation, a potentially life-saving manoeuvre in severely ill patients, in the prehospital setting. However, direct laryngoscopy is often more difficult in this environment, and failed tracheal intubation constitutes an important cause of morbidity. Novel indirect laryngoscopes, such as the Airtraq<sup>® </sup>and Truview<sup>® </sup>laryngoscopes may reduce this risk.</p> <p>Methods</p> <p>We compared the efficacy of these devices to the Macintosh laryngoscope when used by 21 Paramedics proficient in direct laryngoscopy, in a randomized, controlled, manikin study. Following brief didactic instruction with the Airtraq<sup>® </sup>and Truview<sup>® </sup>laryngoscopes, each participant took turns performing laryngoscopy and intubation with each device, in an easy intubation scenario and following placement of a hard cervical collar, in a SimMan<sup>® </sup>manikin.</p> <p>Results</p> <p>The Airtraq<sup>® </sup>reduced the number of optimization manoeuvres and reduced the potential for dental trauma when compared to the Macintosh, in both the normal and simulated difficult intubation scenarios. In contrast, the Truview<sup>® </sup>increased the duration of intubation attempts, and required a greater number of optimization manoeuvres, compared to both the Macintosh and Airtraq<sup>® </sup>devices.</p> <p>Conclusion</p> <p>The Airtraq<sup>® </sup>laryngoscope performed more favourably than the Macintosh and Truview<sup>® </sup>devices when used by Paramedics in this manikin study. Further studies are required to extend these findings to the clinical setting.</p
Comparison of the Airtraq® and Truview® laryngoscopes to the Macintosh laryngoscope for use by Advanced Paramedics in easy and simulated difficult intubation in manikins
<p>Abstract</p> <p>Background</p> <p>Paramedics are frequently required to perform tracheal intubation, a potentially life-saving manoeuvre in severely ill patients, in the prehospital setting. However, direct laryngoscopy is often more difficult in this environment, and failed tracheal intubation constitutes an important cause of morbidity. Novel indirect laryngoscopes, such as the Airtraq<sup>® </sup>and Truview<sup>® </sup>laryngoscopes may reduce this risk.</p> <p>Methods</p> <p>We compared the efficacy of these devices to the Macintosh laryngoscope when used by 21 Paramedics proficient in direct laryngoscopy, in a randomized, controlled, manikin study. Following brief didactic instruction with the Airtraq<sup>® </sup>and Truview<sup>® </sup>laryngoscopes, each participant took turns performing laryngoscopy and intubation with each device, in an easy intubation scenario and following placement of a hard cervical collar, in a SimMan<sup>® </sup>manikin.</p> <p>Results</p> <p>The Airtraq<sup>® </sup>reduced the number of optimization manoeuvres and reduced the potential for dental trauma when compared to the Macintosh, in both the normal and simulated difficult intubation scenarios. In contrast, the Truview<sup>® </sup>increased the duration of intubation attempts, and required a greater number of optimization manoeuvres, compared to both the Macintosh and Airtraq<sup>® </sup>devices.</p> <p>Conclusion</p> <p>The Airtraq<sup>® </sup>laryngoscope performed more favourably than the Macintosh and Truview<sup>® </sup>devices when used by Paramedics in this manikin study. Further studies are required to extend these findings to the clinical setting.</p
Wireless intelligent sensors based in nanostructures with energy self-sufficiency to study the consequences of high temperatures in combustion motors
In this research are proposed the consequences of high temperatures in Internal Combustion Motors (ICM) as correlation of its performance according to give information of the ICM fault detector, which also can be useful for preventive maintenance. It was possible to achieve the proposed target because of it was designed a smart sensor based in nanostructures prepared over Anodic Aluminum Oxide (AAO) samples, which proportionated short response time and high robustness in the measurement tasks of the smart sensor, as well as, the designed sensor has the possibility to work by energy self-sufficiency and sending the measurement data to external users by wireless. In fact, it is waited that this research could be a support for researchers of ICM enhancement, who could look for new techniques of environment conditions cares in compensation to keep the balance between the useful energy obtained from ICM and the environment conditions, where are developed economical activities such as public transport or mining in Peru
The interlayer cohesive energy of graphite from thermal desorption of polyaromatic hydrocarbons
We have studied the interaction of polyaromatic hydrocarbons (PAHs) with the
basal plane of graphite using thermal desorption spectroscopy. Desorption
kinetics of benzene, naphthalene, coronene and ovalene at sub-monolayer
coverages yield activation energies of 0.50 eV, 0.85 eV, 1.40 eV and 2.1 eV,
respectively. Benzene and naphthalene follow simple first order desorption
kinetics while coronene and ovalene exhibit fractional order kinetics owing to
the stability of 2-D adsorbate islands up to the desorption temperature.
Pre-exponential frequency factors are found to be in the range
- as obtained from both Falconer--Madix (isothermal
desorption) analysis and Antoine's fit to vapour pressure data. The resulting
binding energy per carbon atom of the PAH is 5 meV and can be identified
with the interlayer cohesive energy of graphite. The resulting cleavage energy
of graphite is ~meV/atom which is considerably larger than previously
reported experimental values.Comment: 8 pages, 4 figures, 2 table
Effects of Cyclin Dependent Kinase 9 inhibition on zebrafish larvae
CDK9 is a known regulator of cellular transcription, growth and proliferation. Small molecule inhibitors are currently being developed and assessed in clinical trials as anti-cancer drugs. The zebrafish embryo provides an ideal model to explore the effects of CDK9 inhibition in-vivo. This has not been adequately explored previously at the level of a whole organism. We have compared and contrasted the effects of pharmacological and molecular inhibition of CDK9 on somatic growth, apoptosis and cellular proliferation in zebrafish larvae between 0 to 120 hours post fertilisation (hpf) using flavopiridol, a selective CDK9 antagonist, and CDK9-targeting morpholino. We demonstrate that the inhibition of CDK9 diminishes cellular proliferation and increases apoptosis. Subsequently, it affects somatic growth and development of a number of key embryonic structures including the brain, heart, eye and blood vessels. For the first time, we have localized CDK9 at a subcellular level in whole-mounted larvae. This works shows, at a high-throughput level, that CDK9 clearly plays a fundamental role in early cellular growth and proliferation
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