The relationship between ICT adoption and business performance in Malaysia and Indonesia

This paper reviews the relationship of information communication technology adoption (ICT) and Business Performance (BP) from women entrepreneur perspective in Malaysia and Indonesia. The aim of this paper is to identify the dimension of ICT adoption and BP to develop a conceptual framework for further study about the relationship to identify those that can determine women entrepreneur success. To achieve this objective, literature review is conducted by extend number of literature in ICT, BP, and women entrepreneur. Related studies are review and analyze by using literature table. The finding of this paper reveals a proposed conceptual framework and hypothesis that gain support from literature. The significant of this study is expected to provide guideline for women entrepreneurs in Malaysia and Indonesia who wish to adopt ICT in their business and help them to evaluate the relationship with BP. This study can assist women entrepreneurs in considering the adoption of Electronic commerce (EC) and Mobile commerce (MC) to embark themselves in technology and innovation. Further efforts are to test this conceptual framework and hypothesis by using Structural Equation Modelling (SEM) to develop a research model

Autocorrelated process control: Geometric Brownian Motion approach versus Box-Jenkins approach

Existing of autocorrelation will bring a significant effect on the performance and accuracy of process control if the problem does not handle carefully. When dealing with autocorrelated process, Box-Jenkins method will be preferred because of the popularity. However, the computation of Box-Jenkins method is too complicated and challenging which cause of time-consuming. Therefore, an alternative method which known as Geometric Brownian Motion (GBM) is introduced to monitor the autocorrelated process. One real case of furnace temperature data is conducted to compare the performance of Box-Jenkins and GBM methods in monitoring autocorrelation process. Both methods give the same results in terms of model accuracy and monitoring process control. Yet, GBM is superior compared to Box-Jenkins method due to its simplicity and practically with shorter computational time

Implementation of cryptography algorithms in SCADAKratos application

This paper studies cryptography algorithms to be implemented into the SCADAKratos application of thermal vacuum chamber (TVC) system. SCADAKratos application is used to control and monitor the operations of the TVC which is a satellite test equipment that is located at the Malaysia Space Centre, Banting, Malaysia. The security features had been put aside during the development as it was claimed that there is no threat to the system since the system is operated internally. However, during service and troubleshooting by the manufacturer, the system will be accessed through public network. Besides that, the system also can be accessed remotely during operation for control and monitoring purpose. In addition, the testing data results also need to be transferred to the customer through the internet as it is easier and faster. The remote access through public network will cause the TVC system to face a risk to any threat and attack. Therefore, the implementation of cryptography algorithm into TVC system is needed in order to secure and protect the system from unauthorized access. This paper explains the architecture of SCADAKratos application of TVC system and how the cryptography algorithms could be implemented through this application. Secure Hash Algorithm (SHA-1) and AES algorithm (AES) are chosen as the encryption technique which will be applied in the TVC system. Simulation result shows that this technique is feasible for the mentioned implementation

The influence of carbonization temperature on the development of carbon membrane with superior CO2/CH4 separation performance Pengaruh suhu karbonisasi kepada pembangunan membran karbon dengan kesan pemisahan gas CO2/CH4 yang cemerlang

In this study, P84-based carbon tubular membranes were fabricated and characterized in terms of their structural morphology and gas permeation properties, by using Scanning Electron Microscopy (SEM) and pure gas permeation system, respectively. The polymer tubular membranes were then carbonized under nitrogen atmosphere at different carbonization temperatures of 600, 700, 800 and 900 °C, with heating rate of 3°C/min and thermal soak time of 30 minutes. The manipulation of carbonization temperatures was required to see if it could enhance the permeation properties as desired. Pure gas permeation tests were performed using CO2 and CH4 gases. The CO2/CH4 selectivity was found increasing as the carbonization temperature was increased from 600 to 800 °C. The carbon membrane carbonized at 800°C showed the most promising result for CO2/CH4 selectivity, rendering 69.48 and CO2 permeance of 206.1 GPU

Aluminum toxicity in acid sulfate soil alleviated with biogenic liming composites of blood cockle shell and palm kernel shell

Low crop yield from acid sulfate soil was caused by high concentrations of aluminum and iron in soil. Aluminum ion which cause root injury at root region inhibits the uptake of the nutrients by the root and lead to nutrient deficiency. Ground magnesium limestones can beapplied to overcome this problem but incurred more production cost. Biogenic liming agent from blood cockle shell and/or palm kernel shell are more cost effective and provide the essential element i.e. calcium. This study evaluate phase-association of Al in acid sulfate soil remediated using biogenic composites liming material using selective sequential extraction analysis. Biogenic liming composites were characterized for pH, proximate analysis and elemental composition. High ratio of BCS in composite retained Al in the residual form about 91.33%. Amelioration of soil with 100% PKS did not give significant reduction of the exchangeable Al.Keywords: soil remediation; phytotoxicity; abiotic stress; calcination; alkalinity

Adsorption of methylene blue by imperata cylindrica: Reaction optimization by response surface methodology (RSM)

Imperata Cylindrica (IC) is a solid waste that is readily available throughout the year known as one of the most important weed in the world and frequently causes major disposal issues. As a result, using IC as a low-cost adsorbent is beneficial from both, economic and environmental standpoint to remove colors from wastewater of textile industry. This work studies the reaction optimization of methylene blue (MB) removal using IC by response surface methodology (RSM). The RSM experiments were designed with 4 independent variables (initial adsorbent dosage, initial pH, initial dye concentration, and initial temperature) and 1 response variable (percent removal of MB). According to the pareto figure, the initial pH demonstrated the greatest impact on the percent removal of MB. The RSM data predicted the optimum condition of MB removal up to 86.61% using IC, by utilizing adsorbent dosage of 1.458 g/L, at 42 oC, initial pH of 6.8 and MB concentration of 235 ppm. The chacterization analysis revealed the physicochemical properties of IC in the adsoprtion process

Alkaloids from the genus Dehaasia: phytochemistry and biological activities

The genus Dehaasia is one of the genera of evergreen trees or shrubs belong to Lauraceae, and comprise about 35 species of tree that are distributed worldwide. The purpose of this review is to provide an update and comprehensive information on the phytochemistry and pharmacological research of Dehaasia species in order to explore their therapeutic potential and evaluate future research opportunities. All the available information on Dehaasia species was actualized systematically by searching the scientific literatures databases such as PubMed, SciFinder, Web of Science, and Google Scholar. From the data collected in this review, the genus Dehaasia has attracted much attention due to their richness in alkaloids with various bioactivities, and it comprises a wide range of therapeutically promising plants. Therefore, a detailed study and clinical evaluation of Dehaasia species should be carried out in future for the safety approval of therapeutic applications

Phytochemistry and biological activities of the genus Ocotea (Lauraceae): a review on recent research results (2000-2016)

Ocotea (family: Lauracea), which comprises nearly 350 species, are distributed throughout tropical America, Africa, and Asia. Up to now, the reported constituents from the genus Ocotea involve neolignans, alkaloids, sesquiterpenes, flavonoids, lignans, butanolides, benzopyrans, steroids, essential oils and several other types of compounds (alkylphenols, arylpropene, coumarin, ester, saponin). Studies have shown that Ocotea and its active principles possess a wide range of pharmacological activities, such as anti-inflammatory, cytotoxicity, antimicrobial, larvicidal, and antiproliferative activities. The outcome of these studies will further support the therapeutic potential of the genus Ocotea, and provide convincing evidences to its future clinical applications in modern medicine. Thus, increasing amount of data supports application and exploitation for new drug development

Influence of slip velocity on convective boundary layer flow of jeffrey fluid under convective boundary conditions

The problem on influence of slip velocity on convective boundary layer flow of Jeffery fluid with convective boundary conditions together with the effects of magnetohydrodynamic is investigated. The governing equations correspond to the discussed problem are first transformed into ordinary differential equations using similarity transformations before the computation process is done by Keller box method. It is found that, the magnetic parameter enhanced the fluid temperature and lowers the velocity of the fluid flow while the growth of the values of Prandtl and Deborah number weaken the distribution of the fluid temperature

Authenticity testing and detection of Eurycoma longifolia in commercial herbal products using bar-high resolution melting analysis

The present study demonstrated High Resolution Melting (HRM) analysis combined with DNA barcode (Bar-HRM) as a fast and highly sensitive technique for detecting adulterants in Eurycoma longifolia commercial herbal products. Targeting the DNA barcoding of the chloroplastic region-ribulose biphosphate carboxylase large chain (rbcL) and the nuclear ribosomal region-internal transcribed spacer 2 (ITS2), PCR amplification and HRM analysis using saturated Eva green dye as the source of fluorescence signals, was accomplished by employing a real-time cycler. The results were further validated by sequencing to identify unknown sequence from Genbank database and to generate phylogenetic tree using neighbour joint (NJ) analysis. Both of the DNA markers exhibited a distinguishable melting temperature and shape of the normalised curve between the reference and the adulterants. In the case of species identification, ITS2 was more successful in differentiating between species. Additionally, detection of admixture sample containing small traces of targeted E. longifolia DNA (w/v) can be detected as low as 5% for rbcL and less than 1% for ITS2, proving the sensitivity and versatility of the HRM analysis. In conclusion, the Bar-HRM analysis is a fast and reliable technique that can effectively detect adulterants in herbal products. Therefore, this will be beneficial for regulatory agencies in order to regulate food safety issues