This study aims to develop a voltammetric sensors for the detection of bisphenol A (BPA) and uric acid (UA) using chitosan zinc hydroxide-sodium dodecyl sulfatebisyribac (ZHN-SDS-BP/Chi/MWCNT) modified multiwalled carbon nanotubes paste electrode and zinc hydroxide-sodium dodecyl sulfate-bisyribac (ZHN-SDSBP/ MWCNT) modified multiwalled carbon nanotubes paste electrodes. Transmission and scanning electron microscopes were used to examine the surface morphology of these nanocomposites. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and square wave voltammetry (SWV) were used to study the electrochemical properties of these electrodes. Electrodes performance was optimized by evaluating the effects of composition ratio, pH of solution, type of supporting electrolyte and SWV parameters. The effective electrode surface area was determined using chronocoulometry. Under optimal condition, the ZHN-SDS-BP/Chi/MWCNT demonstrated a linear range of 3.0 _M to 0.3 mM for a det.....

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This paper investigates the interaction between capital structure and firm competition on the performance of firms in Nigeria. The study uses two distinct measures of competition, the Herfindahl-Hirschman Index (HHI) and Boone indicator (BI), the impact of competition on leverage-performance relationship is examined. A panel of 63 Nigerian listed firms over the period 2001-2010 is used for the empirical analysis.The results indicate that financial leverage, used as a measure of capital structure, has significant positive effect on firm performance. It also reveals that product market competition in Nigeria enhances the performance effect of leverage. Keywords Leverage, performance, Boone indicator, Herfindahl-Hirschman indicator..

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The main purpose of this paper is to explore the impact of CEO power on the efficiency of corporate governance from the perspective of state-owned enterprises_ CEO turnover in China. Using data of listed SOEs from 2004- 2012, we find that: (1) CEO turnover is negatively correlated with company performance on the whole, yet the enhanced CEO power can reduce the possibility of being forcibly replaced due to the poor performance, showing that the power of CEO play a significant entrenchment role in the decisionmaking of executive turnover; (2) CEO turnover remarkably improves the company_s future performance. However, this promoting effect only appears after the turnover of CEO possessing less power; (3) Further studies also show that upgrading the administrative level and improving the institutional environment can inhibit the rent-seeking behavior of SOEs_ CEO. Our study is not only conducive to understanding the economic consequences of the power of SOEs_ chief executives, but also off.....

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Songket is an aesthetics fabric which is showed from the complexity of songket patterns which  encourage the Malay weavers to be more patient, diligent, and creative in  ideas and  furthermore,   becoming  excellent  in  mathematics.  Songket  and mathematics cannot be separated as it is needed  in all the processes as to produce the beautiful results of songket patterns. This research is  about the analysis of Malaysian songket motifs through the technique of transformation or symmetry  operation group patterns with the combination of mathematical concepts which are two-dimensional  plane method which are the frieze patterns groups and wal Ipaper patterns groups and also from  visual art concept through structural designs technique. This research is also based on the  classification of Malaysian songket patterns which are from four main structure of songket which  are badan kain, kepalakain and pengapitkain, kaki kain and tepikain of sarong and kain/epas I  .....

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This paper examines a perceived benefit of assisted living experience at Rumah Kebajikan Cheras Baru, Kuala Lumpur, Malaysia. The examination focused on co-creational value and perceived benefit towards elderly system, which service design methodology have been implied to discover a results and feedback from activities that has been applied in old system of managing assisted homes and old folks homes in Malaysia. Existing health care system services available may not be effective in dealing with elderly having chronic diseases and disabilities. Resulted of analyzing have shown that elderly people in Malaysia dependent too much on their family support and government support. This paper examines the previous system of homes nursing and assisted living experience and provides a better system that can really support elderly people sustain and manage their daily life effectively without a provision from the government or private sector nursing. Keywords Aging, assisted, co-creation, servic.....

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