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We present a numerical study of an example of piecewise linear systems that constitute a class of hybrid systems. Precisely, we study the chaotic dynamics of the voltage-mode controlled buck converter...
Characterization of the uncertainties in the constitutive behavior of carbon nanotube/cement composites
carbon nanotubes cementitious composite bond strength
2010/1/19
This paper addresses the uncertainties associated with using carbon nanotubes (CNTs) as reinforcement for cement. These uncertainties emerge mainly from the CNTs' wide range of mechanical properties a...
Water vapor effect on high-temperature oxidation behavior of Fe3Al intermetallics
intermetallic compounds iron aluminides water vapor
2010/1/19
Fe3Al intermetallics (Fe3Al, Fe3Al-Zr, Fe3Al-Zr,Mo and Fe3Al-Zr,Mo,Nb) were oxidized at 950 °C in dry and humid (11 vol% water) synthetic air. Thermogravimetric measurements showed that the oxidation ...
Synthesis of Di-t-butyl Polysulfide from Isobutene, Hydrogen Sulfide, and Sulfur (Part 2) Catalytic Behavior of MFI Zeolites
Polysulfide synthesis Zeolite catalyst MFI zeolite Gallium Reaction mechanism
2009/8/4
Synthesis of di-t-butyl polysulfide from isobutene, hydrogen sulfide and sulfur was carried out at 125°C in an autoclave over MFI zeolite catalysts isomorphously framework-substituted with Al, Ga, an...
Sulfidation State and Sulfur Behavior on Mo-based HDS Catalysts Supported on TiO2 Using 35S Tracer Methods
Sulfidation state Hydrodesulfurization High surface titania Molybdenum catalyst
2009/8/4
A 35S radioisotope pulse tracer method using 35S-labeled H2S was used to investigate the sulfidation state of Mo-based catalysts supported on TiO2. Despite the coverage of Mo species on the TiO2 supp...
Behavior of Oxygen of Cerium Composite Oxides on Catalytic Combustion of Carbon Particulate
Cerium composite oxide Isotopic oxygen exchange Diesel particulate filter
2009/8/4
Catalyzed diesel particulate filter (CDPF) is an effective way of reducing the carbon particles contained in the emissions of diesel vehicles. The behavior of the oxygen of cerium composite oxides du...
Polymorphism and Luminescent Behavior of Linear, Two-Coordinate Gold(I) Complexes
Polymorphism Luminescent
2009/7/28
For those interested in the luminescence of gold(I)
complexes, the formation of crystalline polymorphs
with different aurophilic interactions between
molecules or ions offers a new field where indi...
Deformation behavior and dislocation structure of CuAu ordered alloy
Ordered alloys and intermetallics dislocationtransformations thermal anomaly of the yield stress
2009/7/28
An ordered CuAu alloy, which had relatively coarse
grains (5 to 10 μm), without the lamellar structure, is
mechanically tested at temperatures from 77 to 658
K. The temperature dependence of the yi...
Comparison by 35S Radiotracer Methods of Hydrodesulfurization Behavior for Molybdenum, Cobalt-Molybdenum and Nickel-Molybdenum Catalysts Supported on γ-Alumina and High Specific Surface Area Titania
Hydrodesulfurization Dibenzothiophene γ-Alumina High surface area titania
2009/7/28
The differences between MoS2, CoMoS and NiMoS HDS catalysts supported on γ-alumina and high SSA titania are investigated based on the results of [35S]DBT HDS experiments. Previous studies of MoS2 and ...
Room Temperature Sulfur Removal from LPG with Adsorbent for Fuel Cell Application — Adsorption Behavior of Sulfur Compounds —
Adsorptive sulfur removal β zeolite Ceria Fuel cell LPG
2009/7/28
LPG contains 5-10 volppm of sulfur compounds such as thiols, sulfides, and disulfides. Use of LPG as the hydrogen source for fuel cells will require the removal of sulfur content to the ppb level. Act...
Behavior and Mechanisms of Degradation of Thermosetting Plastics in Liquid Environments
Thermosetting resin Corrosion Physical degradation Chemical degradation
2009/7/28
Behavior and mechanisms of degradation of thermosetting plastics used as FRP-matrix and GFRP in liquid environments are reviewed based on our experimental findings. The forms of chemical degradation w...
Water Accumulation and Behavior of Surfactant Associated with Moisture Permeation in Bituminous Pavement on Concrete Deck Bridge
Bituminous mixture Concrete slab Surfactant Moisture permeation Mass transfer
2009/7/27
Water-related damage is one of the major problems for the durability of the bituminous pavement and concrete slabs of concrete deck bridges. In particular, damage can be drastically accelerated by th...
Investigation of Sulfur Behavior on Mo-based Hydrodesulfurization Catalysts Supported on High Surface Area TiO2 by 35S Radioisotope Tracer Method
Hydrodesulfurization High surface area titania Molybdenum catalyst
2009/7/27
Mo catalysts were prepared by impregnation of titania synthesized by the pH swing method which provides a TiO2 carrier with a high specific surface area (134 m2·g−1) and excellent mechanical pr...
Partial Oxidation of Methane to Synthesis Gas over Oxidized Diamond Supported Catalysts—Catalytic Behavior of Nickel and Cobalt Species—
Partial oxidation Diamond Methane Synthesis gas Pulse method
2009/7/24
Characterization of nickel and cobalt catalysts supported on oxidized diamond (O-dia) in the partial oxidation of methane to synthesis gas was carried out by X-ray photoelectron spectroscopy (XPS) an...