Che Rozid Mamat

Regression analysis for stature estimation from foot anthropometry in Malaysian Chinese

Dismembered human remains are frequently found in cases of mass disasters and criminal mutilation. It is therefore of interest to use foot dimensions for the determination of stature of an individual in order to assist in establishing personal identity. This is the first systematic study conducted for the estimation of stature from foot measurements in the Malaysian Chinese. In this study, consenting 213 Chinese (107 males and 106 females) individuals who were between 20 to 64 years old were randomly selected and their stature, foot length and foot breadth were measured. Evidently, sexual dimorphism does exist in foot dimensions. Simple and multiple linear regression equations with and without sex indicators were specifically developed for stature estimation of the Chinese population in Malaysia. Foot measurements are found to yield important predictive information about an individuals stature.

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

Nickel-promoted mesoporous ZSM5 (Ni/mZSM5) was prepared for CO methanation. XRD, NMR and SEM analysis confirmed the structural stability of Ni/mZSM5 with coffin type morphology. The nitrogen physisorption and pyrrole adsorbed FTIR analyses indicated the presence of micro–mesoporosity and a moderate amount of basic sites on both mZSM5 and Ni/mZSM5. At 623 K, Ni/mZSM5 showed a high rate of CO conversion (141.6 μmol CO g-cat−1 s−1) and 92% CH4 yield. Ni/mZSM5 showed better catalytic performance than Ni/MSN (82.4 μmol CO g-cat−1 s−1, 82% CH4 yield), Ni/HZSM5 (29.0 μmol CO g-cat−1 s−1, 54.5% CH4 yield), and Ni/γ-Al2O3 (14.5 μmol CO g-cat−1 s−1, 38.6% CH4 yield). It is noteworthy that the superior catalytic performance of Ni/mZSM5 could be attributed to the presence of both micro–mesoporosity and basicity, which led to a synergistic effect of Ni metal active sites and the mZSM5 support. In situ FTIR spectroscopy showed that CO and H2 may be adsorbed on Ni metal followed by spillover to form adsorbed CO and adsorbed H on the mZSM5 surface. Then, two possible mechanisms for CO methanation were proposed. In the first mechanism, the adsorbed CO may be reacted with H2 to form CH4 and H2O. In the second mechanism, the adsorbed H may be reacted with CO to form CH4 and CO2. However, in this case, the former is the predominant pathway as the methanation reaction is favored by inhibition of the water–gas shift reaction.

Multivariate statistical analysis for race variation from foot anthropometry in the Malaysian population

Dismembered human remains are frequently found in cases of mass disasters and criminal mutilation. In order to establish personal identity, race is among the major categories of the basic biological profile, apart from sex, age, stature, anomalies and pathologies. This is the first systematic study conducted for the assessment of race variations in the Malaysian population from foot measurements. In the present study, 232 Malay (112 males and 120 females) individuals, 213 Chinese (107 males and 106 females) individuals and 204 Indian (102 males and 102 females) individuals (all consenting) who were 20 to 69 years old were randomly selected and their stature, foot length and foot breadth were measured. This study investigated the application of discriminant function analysis, principal component analysis and hierarchical cluster analysis to assess the variations in stature and foot dimensions in the Malay, Chinese and Indian subpopulations in Malaysia. Foot measurements are found to yield important predictive information about an individuals race in the Malaysian population.