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Low energy ion scattering in He/HOPG system
(Elsevier Science, 2008-02)
Low energy ion scattering (LEIS) is a unique tool in surface analysis, since it provides the atomic composition of the outer atomic layer, and time of flight ion scattering (TOF) is a non-destructive method of analysis ...
Relevance of system size to the steady-state properties of tapped granular systems
(American Physical Society, 2015-03)
We investigate the steady-state packing fraction phi and force moment tensor of quasi-two-dimensional granular columns subjected to tapping. Systems of different height h and width L are considered. We find that<br />phi ...
Growth of AlF3 thin films on GaAs(110). Structure and chemical stability
(Elsevier Science, 2001-01)
The growth process of AlF3 films on GaAs, from submonolayer coverage up to several layers, habe been characterized by means of Auger electron spectroscopy, ion sputter depth profiling, and direct recoiling spectroscopy ...
Analysis of illicit drugs by direct ablation of solid samples
(IM Publications, 2015-12-01)
Analysis of illicit drugs arises as an important field of work given the high social impacts presented by drugs in the modern society. Direct laser ablation of solid compounds allows their analysis without sampling or ...
Inverse Shape Design of Deformable Structures and Deformable Wings
(Amer Inst Aeronaut Astronaut, 2011-01)
Inverse methods are mathematical techniques by which the unknown input of a system is determined from a known or desired output. In this article, a new inverse method for the reverse design of deformable structures is ...
Picrotoxin but not bicuculline partially abolishes the cardio-inhibitory responses induced by visual stimulation in the crab Neohelice granulata
(Elsevier Inc, 2012-12)
Conspicuous and sustained heart arrests, revealed as an increase in the magnitude of cardiac interbeat intervals, are elicited in the crab Neohelice granulata upon the presentation of a visual danger stimulus (VDS). Aiming ...
The predator muscid Neodexiopsis rufipes (Macquart, 1851) (Diptera) with ultrastructural morphology of the adult proboscis and eggs
(Elsevier Gmbh, 2018-01)
Studies on the ultrastructural morphology of species by means of Scanning Electron Microscopy (SEM) provide information about their habits and biological adaptations to the environment. Flies of the Neotropical genus ...
New data on the humerotriceps of penguins and its implications in the evolution of the fossa tricipitalis
(Taylor and Francis Ltd., 2017-11)
A paddle-shaped wing, the general morphology of the humerus, and the muscles involved in wing movement are among the most characteristic adaptations to diving in penguins. Particularly, the humeral fossa tricipitalis and ...
Behavioral responses of the pampas deer (Ozotoceros bezoarticus) to human disturbance in San Luis province, Argentina
(University of Oradea Publishing House, 2017-06)
Pampas deer (Ozotoceros bezoarticus, Linnaeus 1758) is a South American cervid, associated with grasslands and savannas; in Argentina this species is listed as endangered. Our aim was to analyze the behavioral responses ...
PVTOL maneuvers guided by a high-level nonlinear controller applied to a rotorcraft machine
(Lavoisier, 2014-07)
This work proposes a nonlinear controller, based on the Theory of Lyapunov, to stabilize a quadrotor when accomplishing positioning and trajectory tracking tasks restricted to a vertical plane. The maneuvers addressed here ...