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RISTime Efficient Robust PID Plus Controller for Satellite Attitude Stabilization Control Considering Angular Velocity and Control Torque Constraint
Publisher: American Society of Civil Engineers
Abstract: A time efficient robust proportional, integral, differential (PID) plus controller for satellite attitude stabilization control is proposed in this paper. A time efficient sliding mode with two-stage structure is designed ...
Effects of Temperature on the Adhesive and the CFRP–Steel Interface in Strengthened Structures
Publisher: American Society of Civil Engineers
Abstract: The bonding interface serves as a vulnerable point in steel structures strengthened with carbon fiber–reinforced polymer (CFRP), significantly influenced by the mechanical properties of adhesives and temperature. To ...
Internal Flow and Noise Investigations About the Cross-Flow Fan With Different Blade Angles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The experimental and numerical studies have been carried out to investigate the flow and the noise characteristics of the three impellers with different blade angles in a cross-flow fan (CFF). ...
UASB Treatment of Wastewater with Concentrated Mixed VFA
Publisher: American Society of Civil Engineers
Abstract: The upflow anaerobic-sludge blanket (UASB) process consistently removed 97–99% of chemical oxygen demand (COD) from wastewater containing concentrated mixed volatile fatty acids (VFA) at 37°C at loading rates of up to 24 g-COD/(L
Removal of Formate from Wastewater by Anaerobic Process
Publisher: American Society of Civil Engineers
Abstract: Formate in wastewater was effectively removed at 37°C by the upflow anaerobic sludge blanket (UASB) process. This was accomplished by keeping the recycle ratio at 3.0 and by lowering the pH of incoming wastewater to pH ...
Mathematical Model for Methane Production from Landfill Bioreactor
Publisher: American Society of Civil Engineers
Abstract: A mathematical model for the development of methane production from a landfill bioreactor (LFBR) treating the organic fraction of municipal solid wastes was developed from the Gompertz equation. The model incorporates three ...
Viscous Damping and Contraction Joint Friction in Underwater Explosion Resistant Design of Arch Dams
Publisher: American Society of Civil Engineers
Abstract: The aim of this study is to clarify the parameter-determination issue with regard to the viscous damping and contraction joint friction in the underwater explosion (UNDEX) resistant design of arch dams. A 141-m-high ...
UASB Treatment of Wastewater Containing Concentrated Benzoate
Publisher: American Society of Civil Engineers
Abstract: The upflow anaerobic sludge blanket (UASB) process removed 97–99% of soluble chemical oxygen demand (COD) from wastewater containing concentrated benzoate at 37°C, pH 7.5, a hydraulic retention time of 9.8 h, and loading ...
Laminar Combustion Characteristics of Premixed Shale Gas and Air Flames
Publisher: ASCE
Abstract: The laminar combustion characteristics of premixed shale gas/air flames were studied by spherical expansion flame experiments and chemical kinetics simulations. The influence of the initial temperature, the initial pressure, ...
Probabilistic Stratification Modeling in Geotechnical Site Characterization
Publisher: American Society of Civil Engineers
Abstract: Stratification in geologic profiles is one of the most significant uncertainties in geotechnical site characterization. In this paper, a three-level probabilistic framework is proposed for geotechnical stratification ...