are devices that open and close a set or sets of electric contacts by the action of a solenoid coil. A contactor is used to control an electric load in a control system. Contactors make or break a set of contacts that controls the voltage applied to some load in cooling systems. A contactor consists of a coil that opens and closes a set of contacts due to the magnetic attraction created by the coil when it is energized. Magnetic starters are also used to start and stop large loads in cooling
Premium
CALABARZON Division of Laguna District of San Pedro PACITA COMPLEX NATIONAL HIGHSCHOOL Sampaguita St. Phase. 6A-1 Pacita Complex I Brgy. San Vicente San Pedro‚ Laguna Tel. and fax No. (02) 8475316 E-mail: pcnhs_m2c99@yahoo.com OREGANO MOSQUITO REPELLENT A Science Investigatory Project (S.I.P) presented to the Science Teacher of PCNHS By: Jade Congcong Elizabeth Jacinto Zyra Calibara Anndrie Gaspar Tricia Arcabos Neale Teope September 24‚ 2014 Republic
Premium Laguna Philippines
Impact of amphibians on mosquitoes It is important for every ecosystem to maintain a balance between all the food chains so that nature can maintain its balance. Although natural ecosystems are under diverse challenges from anthropogenic activities‚ the ecological impacts of such processes often are unclear. Some “threats” may be worse than we think‚ but others may be less harmful. For example‚ invasive species disrupt the functioning
Premium Frog Ecology Mosquito
Background Mosquitoes are one of the most medically significant transmitters as they spread parasites and pathogens‚ which continue to have devastating effects on human beings (Maheswaran et al.‚ 2008). Mosquito-borne diseases such as malaria‚ filariasis‚ yellow fever and dengue cause extensive morbidity and mortality and are a major economic burden within disease-endemic countries . However‚ the use of chemical insecticides has been greatly impeded due to development of physiological
Premium Mosquito Insect Larva
A CASE STUDY ON THE EVOLUTION OF MOSQUITO REPELLENTS By:- Rajdeep Laha Calcutta Business School PGDM 2010-12 OVERVIEW Traditionally‚ various types of substances have been used to repel mosquitos. These include such things as smoke‚ plant extracts‚ oils‚ tars‚ and muds. As insect repellent technology became more sophisticated‚ individual compounds were discovered and isolated. This allowed the formulation of new‚ more efficient forms of mosquito repellents. The first truly effective
Free
July 17‚ 2012 BACKGROUND OF THE STUDY • I chose this project because a Fabric conditioner mosquito repellant made up from natural mosquito repelling plant which is Oregano that will be made as oilthat will remove the health problems caused by com¬mercial mosquito repellents and other fabric conditioner mosquito repellant. Oregano and lemongrass are easy to find and very common and also if this project succeed this can be profitable for business and can encourage others to look for other use of
Free
ABSTRACT Mosquito repellents are essentially required these days. Mosquito coils are one of the cheapest and effective way of avoiding them‚ but this coils are made up of chemicals which can harm our health. So we thought about making a substitute mosquito coil that is not harmful to our health and that is the Ipil-Ipil katol‚ a natural and environmental friendly coil. INTRODUCTION Background of the Study: We chose this project because a mosquito coil made up from natural mosquito repelling
Free Mosquito Dengue fever Aedes
Good Shepherd Academy Poblacion II‚ Victoria‚ Oriental Mindoro SY 2014-2015 “Anti-Mosquito Candle made from Oregano (Oreganum vugare) Oil” Submitted by: Jed Ivan F. Fiedalan Submitted to: Mr. Jeffrey L. San Diego Date: February 20‚ 2015 Table of Contents I. Title page…………………………………………………………………………..1 II. Table of Contents………………………………………………………………….2 III. Abstract……………………………………………………………………………4 IV. Research Plan……………………………………………………………………...5-7 a. Rationale……………………………………………………………………
Free Mosquito Chemical compound
2005). One important control strategy against this and other mosquito-borne diseases is control‚ which aims to reduce human-mosquito contact. Different control measures are used routinely against mosquitoes and their larvae‚ including chemical (eg insecticide)‚ biological (eglarvivorous fish or pathogenic fungi)‚ environmental (e.g. land filling or drainage)‚ and personal protection (e.g. Mosquito repellents formulated as pills‚ coils‚ ointments‚ lotions‚ and sprays; and insecticide-treated or untreated
Premium Capacitor Mosquito
Literature Review on Bangladesh Stock Market Literature Review: 1 Before the decade of eighty much of the stock market literature viewed the present value of dividends to be the principal determinant of market return of stocks. LeRoy and Porter (1981) and Shiller (1981) found that under the assumption of constant discount factor stock prices were too volatile to be consistent with movement in future dividends. The decomposition of stock price movements is very sensitive to what assumption
Premium Stock market