Padang City is a city located on the Coastline of West Sumatra Coast that vulnerable to earthquakes and tsunamis. This vulnerability allows liquefaction phenomenon when an earthquake occurs. Factors affecting are soil type, grain grading, ground water level, relative density vibration. study aims analyze potential based value safety factors obtained by using Seed et al (1985) method Liquefactio...

Torrefaction is an effective pretreatment method to improve the uniformity and quality of lignocellolosic biomass before further thermal processing (e.g., gasification, combustion). The objective of this study was to determine the impacts of torrefaction as a pretreatment before liquefaction. Wood chips were torrefied for 2 h at three different temperatures (230, 260, 290 °C) and then subjected...

The microwave liquefaction kinetics of corn stover in the presence of ethylene glycol (EG) using sulfuric acid as a catalyst was studied. The liquefaction apparent rate constant (k) was examined using a first-order reaction model. The k values of corn stover increased from 0.080 min -1 to 0.165 min -1 , with the reaction temperature increasing from 120 o C to 180 o C. The k value of cellulose a...

Sediment ejecta mechanism contributes significantly to the severity of liquefaction-induced ground failure (e.g., excessive land subsidence). Estimating amount ejected sediment is a key step assess failure; however, procedures quantify it are currently lacking. post-shaking phenomenon resulting from migration and redistribution excess-pore-water-pressure (ue) generated during earthquake shaking...

PURPOSE To investigate the effect of lens density on liquefaction time by using liquefaction device (AquaLase, Alcon Laboratories, TX, U.S.A.). METHODS Cataract surgery using AquaLase was performed on 47 eyes. With a Scheimpflug camera, the density and thickness of lens were measured in eye of each patient preoperatively. During surgery, liquefaction time and total number of pulses were recor...

A process was explored for continuous enzymatic liquefaction of corn starch at high concentration and subsequently saccharification to glucose. The process appears to be quite efficient for conversion of starch to glucose and enzymatic liquefaction and should be readily adaptable to industrial fermentation processes. Preliminary work indicated that milled corn or other cereal grains also can be...

Abstract The city of Algiers (Algeria) is a highly seismic area, and therefore, soil liquefaction poses major concern for structures resting on sandy soil. A campaign 62 static penetration tests or cone penetrometer (CPT) was carried out site located in the commune Dar El Beïda Algiers. Liquefaction Potential Index (LPI) values were assessed, each borehole, based simplified procedure Seed Idris...

In the past decade, computational intelligence (CI) techniques have been widely adopted in various fields such as business, science and engineering, as well as information technology. Specifically, hybrid techniques using artificial neural networks (ANNs) and genetic algorithms (GAs) are becoming an important alternative for solving problems in the field of engineering in comparison to traditio...