IJOART Volume 3, Issue 2, February 2014 Edition


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Study of total chromium and water soluble chromium in Indian cement samples[]


Estimation of water soluble hexavalent chromium and total chromium has been devised. For the complete extraction of water soluble hexavalent chromium, leaching period of five days is done. It was ascertained that complete extraction was achieved in five days; the total chromium determination in these samples was done by fusing sample with sodium carbonate up to 1050?C in muffle furnace. Chromium concentration in these samples is determined with spectrophotometer using a redox indicator (1, 5 diphenylcarbazide). Samples investigated are ordinary Portland cement (OPC), Portland pozzolona cement (PPC), Portland slag cement (PSC) and clinker. The content of water soluble and total chromium in these samples ranged from 12 to 33 ppm and from 684 to 1026 ppm respectively. The accuracy of the method has been checked using a standard reference material of National Institute of Standards & Technology (NIST), USA, and found to be in permissible limits.


On Machine Learning Techniques For Multi-class Classification[]


Most of the practical applications involve multi-class classification, especially in remote sensing land cover classification, protein function classification, music categorization and semantic scene classification. In this paper we introduces multi-label classification, organization of sparse vectors and related literature and performs comparative experimental results of various multi-class classification methods. This paper also discusses the quantification concepts of the multi-class nature of data set.


A Discussion on Testing Hadoop Applications[]


The purpose of analysing the big data, using Hadoop framework, is to bring the useful insight from the huge size of the data. It provides great opportunities for the stakeholders to take the appropriate decision for improvement of the business. The paper discusses the specific challages that we encounter during planning, preparing and executing the test for verifying the functionalities of Hadoop applications.


Esan Traditional Medicine: Problems and Prospects[]


This paper discusses Esan Traditional Medicine (ETM} with emphasis on its problems and prospects. The ETM flows together within the network of African traditional heritage. It forms part of African metaphysical belief and an essential element of the people’s life since good health and good living is the core expectation of all humans existing on earth. This paper further examines ETM as a phenomenon that revolves round all the people’s life and activities. That ETM does not only concern itself with the healing, cure and prevention of diseases and ailments. That it goes beyond the physical to the psychosomatic and spiritual levels. The paper also discusses that in Esan there is medicine for planting, good luck, and so on. Nevertheless the main concern of this treatise is how the response to social change has adversely affected the practice of ETM. Besides, the paper further conveys that deforestation, poor attitude to ETM and traditional practitioners, the death of traditional experts and others form the factors militating against the ETM. To achieve the objectives of this work the researchers adopt the analytical, descriptive and the phenomenological methodology. The researchers summit that if the recommendations made in this paper is appreciated, the ETM will be revamped and it will also boost the application of alternative medicine to make room for good health and peace which is the bottom line for development throughout the world.


DETERMINATION OF MECHANICAL PROPERTIES OF RECYCLED AGGREGATE CONCRETE WITH FLY ASH[]


Minimizing the environmental impact and energy and CO2 intensity of concrete used for construction is increasingly important as resources decline and the impact of greenhouse emissions becomes more evident. The objective of the present investigation was to assess the properties of concrete that combine both supplementary cementitious material (fly ash) and recycled aggregate. In this investigation an attempt was made to understand how the properties of concrete get affected when fly ash is used as a cement replacement and recycled concrete aggregate as a replacement to conventional coarse aggregate in different proportion. An experimental investigation was carried out to study the properties of F-RA (fly ash based recycled aggregate) concrete. For concrete IS 10262:2009 method of mix design is adopted and considering this as a basis, mix design for replacements has been made. Mix design was made for M-20 grade of concrete. Three different aggregate replacement levels namely 15%, 30% and 45% with recycled aggregate were chosen for the study. The results from various tests are compared and optimum recycle aggregate replacement is chosen. Fly ash replacement with cement in different proportions, i.e 10%, 20%, 30% and 40% is done for the optimum recycled aggregate concrete.


PLASTIC RECYCLING AND UTILIZATION DUE TO ITS XENOBIOTIC CHARACTERISTIC IN THE ENVIRONMENT[]


Plastics are typically organic polymers of high molecular mass, but they often contain other substances. They are usually synthetic, most commonly derived from petrochemicals, but many are partially natural. Most plastics contain organic polymers. The vast majority of these polymers are based on chains of carbon atoms alone or with oxygen, sulfur, or nitrogen as well. PVC is one of the most widely used plastics. This application note details samples of PVC in the form of resin, thin films, gasket and pipe, which are to be prepared in cross section to a thickness of 1mm for general observation under optical light microscope. A percentage of the recycled pellets are then re-introduced into the main production operation. This closed-loop operation has taken place since the 1970s and has made the production of some plastic products amongst the most efficient operations today. The average size of plastic particles in the environment seems to be decreasing, and the abundance and global distribution of micro-plastic fragments have increased over the last few decades. However, the environmental consequences of such microscopic debris are still poorly understood.


Effect of Gender, Attitude towards Science, Parental Education and Family Size on Science Achievement of Secondary School Students of Central U.P.[]


This study explored the effects of gender, attitude towards science, parental education, and family size on science achievement. A convenience sample of 2006 students, 1080 males and 926 female from twenty one schools of central UP was used for study. The Science Attitude Scale, Science Achievement Test and Personal and Environmental background assessment Questionnaire were used for data collection, while t-test, f-test and correlation techniques were used for statistical analysis. The results revealed that there was a significant difference between science achievement of boys and girls. The results of analysis showed that there was positive co-relation between attitude towards science and achievement in science. The results of the analysis showed that the parental education is positively correlated with the science achievement of the students. The family size of the students was positively associated with the science achievement of the students.


Rosuvastatin and atorvastatin affect terpenoid production in Centella asiatica (Linn.) Urban differently[]


Treatment of Centella asiatica with two statin molecules, that are used to inhibit HMG Co-A reductase enzyme to control production of cholesterol in human, showed their contrasting effects on the production of asiatic acid and madecassic acid (triterpenes) in its leaves and petioles. This might be due the fact that the isopentenyl pyrophosphate (IPP), which is precursor of triterpenes in plants, is biosynthesized in two different ways, and these two statins affect different enzymes of the unrelated pathways as an inhibitor, and as an enhancer/modulator respectively. Atorvastatin presumably inhibits HMG CoA reductase, that plays key role in the mevalonate pathway, while rosuvastatin might probably be modulating CDP-ME synthase of the alternative non-mevalonate pathway favorably.


MULTI SENSOR FOR RELIABLE SOLDIER AND INDOOR NAVIGATION SYSTEM[]


This paper represents a first step in developing an indoor navigation system based only on Micro-Electro-Mechanical Systems (MEMS) accelerometer and gyroscope sensors. The major advantage of the proposed inertial navigation system consists on the fact that it does not require any complex infrastructure to be able to operate. For determining the distance it uses three axis accelerometer sensors, while the direction of the user is determined from the gyroscope angular rate data. As no infrastructure is used, the cost of such a system is low.


Approach to Wind Power Enhancement at Different Windy Locations in Bangladesh[]


In developing country like Bangladesh, the demand of electrical energy is very higher than the available production. Bangladesh being a tropical country does have a lot of wind flow in different seasons of the year. Wind energy and solar energy is an important source of electrical power in recent years. Its main advantage comes from the fact of being a re-newable and environmental-friendly energy. However, the prospect for wind energy in Bangladesh is not at satisfactory level due to low average wind velocities at different regions of the country. This paper studied previously collected data on the wind resources available in Bangladesh. The scope of this paper concentrates on an approach to tie together wind power by installing a secondary unit which would only support the primary turbine unit in case the wind velocity falls under the essential value. The secondary unit would encompass a turbine, which would be operated by a DC motor connected to a battery system that is charged by a solar panel. To investigate the velocity profiles for different pressure differences at different regions of the prototype conduit, power class, CFD ANSYS FLOTRAN, and Windographer is used as the tool of this analysis.



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