The Localization Hypothesis and Machines

In a recent article in 'Artificial Life', Chu and Ho suggested that Rosen's central result about the simulability of living systems might be flawed. This argument was later declared ''null and void'' by Louie. In this article the validity of Louie's objections are examined

Portuguese tourism demand:a dynamic panel data analysis

This article considers the determinants of Portuguese tourism demand for the period 2004-2013. The econometric methodology uses a panel unit root test and the dynamic panel data (GMM-system estimator). The different techniques of panel unit root (Levin, Lin and Chu; Im, Pesaran and Shin W-stat and augmented Dickey-Fuller - Fisher Chi-square) show that the variables used in this panel are stationary. The dynamic model proves that tourism demand is a dynamic process. The variables relative prices, income per capita, human capital and government spending encourage international tourism demand for Portugal.info:eu-repo/semantics/publishedVersio

Sandra Parks and Lamar Puckett in a Joint Senior Recital

This is the program for the joint senior recital of pianist Sandra W. Parks and baritone Lamar Puckett. Flutist Jane Chu assisted Parks; pianist Cynthia McDonnough assisted Puckett. The recital took place on February 14, 1978, in the Mabee Fine Arts Center Recital Hall

Debra Franks and Karen Claiborne in a Joint Junior Recital

This is the program for the joint junior recital of Debra Franks and Karen Claiborne. Pianist Jane Chu accompanied Franks, who performed on the flute; pianist Dr. Jack W. Jones accompanied Claiborne, who performed on the alto saxophone. The recital took place on December 4, 1975, at 5:00, in the Mabee Fine Arts Center Recital Hall

Optimisation of enzymatic hydrolysis for concentration of squalene in palm fatty acid distillate

BACKGROUND: Squalene was concentrated from palm fatty acid distillate (PFAD) in this study using commercial immobilised Candida antarctica lipase (Novozyme 435®). The PFAD was neutralised (NPFAD) using an alkali to liberate the free fatty acids and then hydrolysed at 65 ± 1 °C. The enzymatic hydrolysis on NPFAD was optimised using response surface methodology (RSM) before being neutralised again to obtain a concentrated squalene fraction. RESULTS: A five-level, three-factor central composite rotatable design was adopted to evaluate the effects of the enzymatic hydrolysis parameters reaction time (4-12 h), water content (50-70% w/w) and enzyme concentration (1.5-3.5% w/w) on the percentage yield of squalene concentration. The optimal reaction parameters for maximum yield of squalene concentration were identified from the respective contour plots. The optimal enzymatic hydrolysis conditions were a reaction time of 7.05 h, a water content of 61.40% w/w and an enzyme concentration of 2.23% w/w. CONCLUSION: RSM was used to determine the optimal conditions for enzymatic hydrolysis of NPFAD with C. antarctica lipase for maximum recovery of squalene which could be implemented on an industrial scale