Archives-December 2013

The special characteristics of the Autogenous mill are stated, and a suitable type of model for the mill is presented. An Autogenous Milling defined as used in this study; the term Autogenous milling means a process in which the size of the constituent pieces of a supply of rock is reduced in a tumbling mill purely by the interaction of the pieces, or by the interaction of the pieces with the mill shell, no other grinding medium being employed. The definition thus covers both 'run-of-mine' and 'pebble' milling, the only difference from the mathematical modeling viewpoint being that the feed to the first has a continuous, and the second a non-continuous, size distribution

Science and technology have made amazing developments in the design of electronics and machinery using standard materials, which do not have particularly special properties (i.e. steel, aluminum, gold). One can imagine the range of possibilities, which exist for special materials that have properties, which scientists can manipulate according to the need. Some such materials have the ability to change shape or size simply by adding a little bit of heat, or to change from a liquid to a solid almost instantly when near a magnet; these materials are called smart materials. Varieties of smart materials already exist, and are being researched extensively. These include piezoelectric materials, magneto-rheostatic materials, electro-rheostatic materials, and shape memory alloys. Some everyday items are already incorporating smart materials (coffeepots, cars, the International Space Station, eyeglasses) and the number of applications for them is growing steadily. Each individual type of smart material has a different property which can be significantly altered, such as viscosity, volume, and conductivity. The property that can be altered influences what types of applications the smart material can be used. This paper deals with the recent development of smart materials particularly piezoelectric materials and its usage for the micro machines.

This study presents the impact of board governance mechanism on share repurchase for Malaysian listed companies by using the pooled panel data analysis for a period of six years (2005 to 2010). The result shows that foreign board member, board independent and total remuneration play a significant role in influencing Malaysian companies toward share repurchase.

This study presents the impact of type of ownership structure on share repurchase for Malaysian listed companies by using the pooled panel data analysis for a period of six years (2005 to 2010). Findings from this study indicate that companies with government, foreign and managerial ownership have significant influence on share repurchase. It is concluded that the higher the government ownership, the higher the value of share repurchases transaction and vice versa. Meanwhile, there is an inverse relationship between foreign and managerial ownership; and share repurchase in Malaysia.

To assess the impact of textile and dye industrial effluent on soil and crops, the pot culture experiment carried out with maize crop to determine the effect of dye and textile factory effluent in combination with amendments (poultry manure, green leaf manure, biocompost, vermicompost). This study revealed that application of CETP sludge @ 5 t ha-1 + poultry manure @ 5 t ha-1 + NPK increased the soil organic carbon, available N, P, K, Ca, Mg and micronutrients (Fe, Cu, Mn, Zn) in soil under treated effluent irrigation compared to river water irrigation. The sodium content and ESP of soil increased under effluent irrigation. However, it did not produce any toxic effects to the crops. This showed that the treated effluent could be safely used for irrigation along with poultry manure @ 5 t ha-1 and NPK.

The effluent and sludge generated from various industries are being dumped into the environment, causing various hazards on a long run. At the same time, these wastes contain essential nutrients. So utilization of such wastes for crop production can enhance the availability of nutrients and enrich soil organic matters that ultimately increase the growth of crops. Gypsum, pressmud, Farm yard manure, ETP sludge were tried to ameliorate the textile and dye effluent polluted soil habitat, using sunflower (CO4) as a test crop. The sludge along with effluent irrigation added considerable quantities of cations (calcium, magnesium and sodium) to the soil system. Addition of amendments had a strong influence in enhancing the soil quality parameters like exchangeable calcium. Application of pressmud @ 5 t ha-1 along with 100 per cent GR + NPK reduced the soil ESP by 44.96 per cent. The heavy metal content were also reduced due to addition of pressmud. Application of 100 per cent GR + pressmud @ 5 t ha-1 + NPK under effluent irrigation increased the crop growth, yield attributes (head diameter, head weight, seed test weight) and yield of sunflower in effluent polluted soil habitat. The yield under pressmud amended plots was 36 per cent higher over control. Reclamation and restoration of textile dye effluent polluted soil habitat is possible by leaching the soil with 100 per cent GR followed by application of pressmud @ 5 t ha-1 and recommended NPK.

Gypsum, pressmud, farm yard manure, ETP sludge were tried to ameliorate the textile and dye effluent polluted soil habitat, using sunflower (CO4) as a test crop. The sludge along with effluent irrigation added considerable quantities of cations (calcium, magnesium and sodium) to the soil system. Application of pressmud @ 5 t ha-1 along with 100 per cent GR + NPK reduced the soil ESP by 44.96 per cent. The heavy metal content were also reduced due to addition of pressmud. Higher microbial population was also observed under effluent irrigation than well water. Application of 100 per cent GR + pressmud @ 5 t ha-1 + NPK under effluent irrigation increased the crop growth, yield attributes (head diameter, head weight, seed test weight) and yield of sunflower in effluent polluted soil habitat. The yield under pressmud amended plots was 36 per cent higher over control. Reclamation and restoration of textile dye effluent polluted soil habitat is possible by leaching the soil with 100 per cent GR followed by application of pressmud @ 5 t ha-1 and recommended NPK.

Rashtriya Swasthiya Bima Yojana is a health insurance scheme for the poor in India. The scheme rolled out on the 1st of April 2008, it covers the hospitalization expenditure of the poor people. According to the United Nations and International Labour Organization the scheme is one of the best 18 insurance schemes of the world. This article reviews the progress of the scheme, gender analysis, outpatient initiative by the scheme, new initiatives by the scheme, various issues in the implementation and suitable recommendations in the light of the study findings.

The object-oriented data model is predicted to be the heart of the next generation of database systems. Users want to move from old legacy databases into applying this new technology that provides extensibility and exhibility in maintenance. However, a major limitation on the wide acceptance of object-oriented databases is the amount of time and money invested on existing database applications, which are based on conventional legacy systems. Users do not want to lose the huge amounts of data present in conventional databases. This paper presents a novel approach to transform a given conventional database into an object-oriented database. It is assumed that the necessary characteristics of the conventional database to be re-engineered are known and available. The source of these characteristics might be the data dictionary and/or an expert in the given conventional database. We implemented a system that builds an understanding of a given conventional database by taking these characteristics as input and produces the corresponding object-oriented database as output. Finally, we handle the migration of data from the conventional database to the constructed object-oriented database.

Approximately 750,000 multi-family housing units experienced roofing problems due to fire-retardant-treated (FRT) plywood sheathing failure since 1985 until 1995. The problem is caused by excessive exposure to solar radiation. Plywood is not safe because it contains glue that may be toxic, harmful to life and human skin when exposed to ignition. The aims of this research built on modifying plywood to be fire resistant. Thus, the sol - gel technique was applied to prepare a new fire-retardant coating containing different volumes of H3PO4 (0, 0.3, 0.7, and 1.1 ml) to protect the plywood from ignition. The flammability properties of the different coated samples evaluated by the following measurements using standard methods: limiting oxygen index (LOI), ignitability and thermogra¬vimetric analysis (TGA). The results indicated that, the highest flame retardant LOI obtained at H3PO4 1.1ml reaching ? 150% relative to the un-treated; these results are supported through ignitability and thermogravimetric analysis.