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An Overview of Additive mixed EDM
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The objective of this paper is to understand various trends of Electrical discharge machining (EDM) has been widely used as a removal process to produce parts, dies and molds for several decades. In recent years, the surface modification for hardening and depositing some functional materials by EDM has been studied [1].The development of the super tough electrical conductive material such as carbides, stainless steel, nitralloy etc. resulted in development of the nontraditional machining processes. These materials are difficult to machine by conventional machining process & have wide range of applications in industry. In EDM thermal energy is used to machine all electrical conductive materials of any hardness & toughness. Since there is no direct contact between the tool electrode & work piece in EDM, machining defects like mechanical stresses, clattering & vibration do not create problem during machining [2].

Study on Effect of Powder Mixed dielectric in EDM of  Inconel 718

- Electrical discharge machining (EDM) is one of the most extensively disseminated manufacturing technologies, in particular as regards the generation of precise and difficult geometrical shapes on hard metallic components. The objective of this paper is to Study on Effect of Powder Mixed dielectric in EDM of Inconel 718. The effect of various powder mixed in dielectric is studied input parameters like Duty cycles, current, pulse on time and powder media in that Silicon carbide, Aluminium oxide, Graphite powder used. Machining characteristics measured in terms of Material removal rate, tool wear rate. To obtain the optimal process parameter combination, optimization is carried out by the Signal-to-Noise (S/N) ratio analysis of Taguchi method using L18 Orthogonal Array. An analysis of variance (ANOVA) is used to present the influence of process parameters on material removal rate, tool wear rate. Results obtained by Taguchi method and by ANOVA method, are compared

The Impact of Teacher Errors on Senior Students’  Understanding of Concept Respiration, in Awka,  An

The study investigated how teachers’ conceptual errors influenced secondary school students understanding of concept of respiration. The sample comprised 40 out of 72 biology teachers and 432 out of 2049 biology students drawn from 10 secondary schools in Awka Education zone of Anambra State. Two research questions and one null hypothesis guided the study. Date was collected using three instrument developed by the researchers.

Brain Drain in Africa: Stakes and Perspectives for  Cameroonian Universities

This paper studies the impact of the old brain drain phenomenon in Africa and particularly in Cameroonian Universities. Through documentary researches, primary data are collected from the Department of Academic Affairs in all Cameroonian State Universities.

Supercapacitor Using a Liquid Dielectric Material

A supercapacitor stores energy electrostatically by polarizing an electrolytic solution. Though it is an electrochemical device there are no chemical reactions involved in its energy storage mechanism. This mechanism is highly reversible, allowing the supercapacitor to be charged and discharged hundreds of thousands to even millions of times. Recent advances in this field have been in developing solid state supercapacitors. In this paper, a low temperature synthesis of PZT by sol-gel route is achieved which is made into a homogeneous solution using Diethylene Glycol. The resulting solution is used as a liquid dielectric in a supercapacitor fabricated using common available plastic containers of different form factors and their electrical properties were measured. The average time taken to charge and discharge the supercapacitor was noted. It was also tested for lowered temperature conditions. The future prospects and applications of this technology are also discussed in

Clustering Based Routing Protocols for Wireless Sensor  Networks: A Survey

Due to the wide range of application of Wireless Sensor Networks (WSN)[1] the past few years have witnessed the potential use of it and also become a hot research area now a days. One the main degradation of WSN is that sensor nodes are battery powered and deployed in harsh environment so it is not possible to recharge or replace the batteries all the time the node fails or dead. WSN are used in various applications like environment monitoring, health care, military, industrial control units and in various other environments. Routing protocols developed for various other adhoc networks such as MANET, VANET etc can’t apply directly in WSN due to energy constrains of nodes. It is proved that sensor nodes require much energy to transmit data rather than sensing thus routing protocol developed for WSN should be efficient so that the network lifetime can be prolonged. In this paper, a survey on various Clustering routing protocols has been done indicating their merits

The role of Microfinance Institutions in Improving the  Economic Status of Women in Tanzania: The Ca

The roles of Micro finance institution is to provide small loans to their clients, creation of employment opportunities, capacity building to borrowers by offering different skills such as use of loans, entrepreneurship and managerial skills. The research intended to examine the role played by financial institution’s operations in improving the economic status of women in Tanzania through provision of soft loans, by taking PRIDE TANZANIA-Arusha as a case of study basing on the fact that women are the poorest amongst the world’s poor people

Tags: Education,
The role of Microfinance Institutions in Improving the  Economic Status of Women in Tanzania: The Ca

The roles of Micro finance institution is to provide small loans to their clients, creation of employment opportunities, capacity building to borrowers by offering different skills such as use of loans, entrepreneurship and managerial skills. The research intended to examine the role played by financial institution’s operations in improving the economic status of women in Tanzania through provision of soft loans, by taking PRIDE TANZANIA-Arusha as a case of study basing on the fact that women are the poorest amongst the world’s poor people

Tags: Education,
The role of Microfinance Institutions in Improving the  Economic Status of Women in Tanzania: The Ca

The roles of Micro finance institution is to provide small loans to their clients, creation of employment opportunities, capacity building to borrowers by offering different skills such as use of loans, entrepreneurship and managerial skills. The research intended to examine the role played by financial institution’s operations in improving the economic status of women in Tanzania through provision of soft loans, by taking PRIDE TANZANIA-Arusha as a case of study basing on the fact that women are the poorest amongst the world’s poor people

Tags: Education,
The role of Microfinance Institutions in Improving the  Economic Status of Women in Tanzania: The Ca

The roles of Micro finance institution is to provide small loans to their clients, creation of employment opportunities, capacity building to borrowers by offering different skills such as use of loans, entrepreneurship and managerial skills. The research intended to examine the role played by financial institution’s operations in improving the economic status of women in Tanzania through provision of soft loans, by taking PRIDE TANZANIA-Arusha as a case of study basing on the fact that women are the poorest amongst the world’s poor people

Tags: Education,

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