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OALib Journal期刊

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DEVELOPMENT OF NON-DESTRUCTIVE MONITORING SYSTEM FOR CHLORIDE PENETRATION INTO REINFORCED CONCRETE STRUCTURES
Antoni Antoni
Civil Engineering Dimension , 2006,
Abstract: Reinforced concrete structures in marine environment are subjected to chloride penetration, which significantly degrades the structural performance due to the occurrence of corrosion in the steel reinforcement. The performance degradation of the structures would reduce the intended service life and caused higher maintenance and repair cost. Therefore, system to monitor chloride penetration into reinforced concrete before the starting corrosion of reinforcement is indispensable. An embedded probe system to detect chloride penetration into concrete was developed in Japan. This probe consists of a cementitious material body and some number of wires as sensors, which are set in the shallow ditches around the probe body. The system detect the chloride penetration by monitoring the initiation time of wire corrosion, it also has the advantages of continuous monitoring and early warning on the onset of corrosion in the reinforcement. However, the probe had not yet had high sensitivity for detecting critical chloride content in concrete. Therefore to increase its sensitivity, four types of improvements, namely partial coating of the wires, waterproofing on the probe body, filling the ditches with porous material and supplying small current on the wires were evaluated in this study. From the experimental result, it was observed that supplying small current and partial coating of the wires could improve the sensitivity of the probe significantly, while waterproofing treatment on the probe body and filling the ditches did not have significant contribution.
Chloride Penetration into Fiber Reinforced Concrete under Static and Cyclic Compressive Loading
Antoni Antoni
Civil Engineering Dimension , 2008,
Abstract: The effect of loading on the chloride penetration into plain concrete (PC) and fiber reinforced concrete (FRC) was studied experimentally by using modified NT Build 492 – Non-steady state chloride migration test that include the application of loading on the specimen during the test. Three types of polypropylene fibers with different lengths and shapes were used. The concretes were tested for chloride penetration at different stress ratios under static and cyclic loading. The results of the static loading showed that there was a slight reduction in the chloride penetration under low level of compressive stress while an increase in the chloride penetration was found at higher stress level. There are significance difference in chloride penetration behavior of the plain concrete, long fiber FRC and short fiber FRC. Chloride penetration increased even more at cyclic loading conditions showing difference behavior of FRC and PC at difference number of cycle and load level.
Territorial Checking and Balance: The Change of the Spanish State Territorial Organization by Subconstitutional Rules  [PDF]
Antoni Abati Ninet
Beijing Law Review (BLR) , 2012, DOI: 10.4236/blr.2012.31002
Abstract: We are in the midst of a strong revival of interest in the Subnational units (Autonomous Communities) within the Autonomous Spanish State. Recent reforms of the Statute of Autonomy by certain autonomous regions have revealed new mechanisms and new ways of interaction and communication between policy-statutory subnational units—within the scope of the reforms of the Statute of Autonomy. This interaction is the assumption of a phenomenon called “horizontal autonomism”. This concrete phenomenon has not only reopened, with still more force, the theoretical and practical debate about the nature of the territorial organization of the Spanish State, but also demonstrates that the notion of autonomy and the relations between national and sub-national units in Spain are permanently evolving. In addition, the recent statutory amends have initiated a new evolutive stage of the hybrid state model without reforming the Constitu- tion. The article focuses primarily on two elements of study. First, starting from a constitutional perspective the phe- nomenon of what is called “horizontal autonomism” as the basis of the recent reforms of the Statutes of Autonomy (subconstitutional rules). The second aspect is to analyze one of the main consequences and effects of this “horizontal autonomism” in relation to the development of the territorial nature of the Spanish state. Concretely, we focus on how the autonomous rules, are real sources of law for other autonomies, and, potentially, for the state.
Remote Electrical Stimulation by Means of Implanted Rectifiers
Antoni Ivorra
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0023456
Abstract: Miniaturization of active implantable medical devices is currently compromised by the available means for electrically powering them. Most common energy supply techniques for implants – batteries and inductive couplers – comprise bulky parts which, in most cases, are significantly larger than the circuitry they feed. Here, for overcoming such miniaturization bottleneck in the case of implants for electrical stimulation, it is proposed to make those implants act as rectifiers of high frequency bursts supplied by remote electrodes. In this way, low frequency currents will be generated locally around the implant and these low frequency currents will perform stimulation of excitable tissues whereas the high frequency currents will cause only innocuous heating. The present study numerically demonstrates that low frequency currents capable of stimulation can be produced by a miniature device behaving as a diode when high frequency currents, neither capable of thermal damage nor of stimulation, flow through the tissue where the device is implanted. Moreover, experimental evidence is provided by an in vivo proof of concept model consisting of an anesthetized earthworm in which a commercial diode was implanted. With currently available microelectronic techniques, very thin stimulation capsules (diameter <500 μm) deliverable by injection are easily conceivable.
Peter Carruthers: la arquitectura de la mente
Gomila,Antoni;
An??lisis filos?3fico , 2008,
Abstract: in this introduction to the special issue, the central ideas in peter carruther's thought are presented: his particular version of functionalist cognitivism, which inverts the common place that animals feel but not think, to claim that they do think but do not feel. the key to this inversion is the central role carruthers assigns to language in the architecture of the mind, in spite of his defense of a version of the massive modularity hypothesis: as a ground for qualitative consciousness and for flexible thought. finally, the different contributions to the special issue are placed in terms of such central axes.
Criterios para la exploración minera mediante microtermometría de inclusiones fluidas
Camprubí, Antoni;
Boletín de la Sociedad Geológica Mexicana , 2010,
Abstract: the microthermometry of fluid inclusions is an analytical technique that has numerous applications in both academia and mining exploration. this technique, when based on sound petrographic studies, allows determination or estimation of (1) the formation temperatures of a mineral deposit, (2) the salinity and contents of several solutes in mineralizing fluids, (3) the evolution in time and the spatial variations in temperature and salinity, (4) the occurrence of various mechanisms of mineral deposition, (5) the occurrence of hydrothermal brine pulses, various in nature, (6) the presence of feeder channels in hydrothermal deposits and their relationship with the distribution of economic mineralization, (7) the migration of brines through a sedimentary basin and the association of such phenomena with the maturation of petroleum or the formation of certain types of ore deposits, (8) the interaction between fluids of contrasting chemical composition, (9) the position of paleosurfaces or the paleowater table under hydrostatic pressure, and (10) the type or subtype of ore deposit to which a given deposit may belong, as well as many other metallogenic issues. consequently, the use of this technique potentially provides key information on the genesis of most ore deposits, and cannot be replaced by other techniques as a guide for mineral exploration or for deciding against exploitation of a mineral deposit or mining district.
Early tourism writing at the Jagiellonian University, Kraków (15th c.-mid-17th C.)
Antoni Jackowski
Tourism , 2009, DOI: 10.2478/V10106-009-0002-0
Abstract: The author attempts to outline early tourism writing by professors and graduates from the Kraków Academy (Akademia Krakowska), the majority of which are geographic and cartographic works. Among the authors, Jan D ugosz, Wawrzyniec Korwin, Jan z G ogowa, Maciej z Miechowa (Miechowita), Bernard Wapowski and Marcin Kromer should be mentioned.
"Sportsman's Hernia". Part Two: Multispecialist Differentia Diagnosis of Most Common Disorders
Antoni cierski
Polish Journal of Surgery , 2012, DOI: 10.2478/v10035-012-0018-z
Abstract:
Kinematical correlations: from RHIC to LHC
Szczurek, Antoni
High Energy Physics - Phenomenology , 2008,
Abstract: Kinematical correlations between outgoing partons (elementary particles) are discussed in the framework of $k_t$-factorization. Different unintegrated gluon distributions are used. I discuss correlations between charm-anticharm, jets, photon and jet, and between leptons from semileptonic decays of heavy quarks as well as leptons produced in the Drell-Yan mechanism. Both correlations in azimuth as well as in the length of transverse momenta are shown. General conclusions are drawn.
Mechanisms of exclusive meson production at high energies
Szczurek, Antoni
High Energy Physics - Phenomenology , 2008, DOI: 10.1063/1.3122198
Abstract: I discuss mechanisms of exclusive production of mesons at high energies. Some illustrative examples for the FNAL Tevatron and CERN LHC as well as for lower energies are shown.
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