INSECTS An insect is a creature without a backbone and with a body divided into three main parts: the head‚ thorax and abdomen. Most insects have three pairs of legs and one or two pairs of wings. The ’feelers’ or antennae on the insect’s head are it sense of touch and smell. Some insects have a sting in the abdomen. We already know that there are over a million different kinds of insects‚ and many new species are being found all the time. Insects are by far the biggest group of creatures on
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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 active
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684 Antioxidant Activities of Orange Peel Extracts A.E. Hegazy and M.I. Ibrahium Department of Food Science and Technology‚ Faculty of Agriculture‚ AL-Azhar University‚ Cairo‚ Egypt Abstract: This work aimed to evaluate the efficiency of different organic solvents such as‚ methanol‚ ethanol‚ dichloromethane‚ acetone‚ hexane and ethyl acetate for extraction of ( flavonoids and polyphenolic compounds(TFC and TPC respectively) from the orange peel. Also‚ the effect of these solvents on the
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cuisine by Adrian Forsyth Can Insects Help with Food Shortage in the World? As the number of humans increase‚ we will have to look for new sources of food. In some cultures‚ insects have been consumed for thousand of years‚ and many countries in the world such as China‚ Thailand‚ South America and Africa use insects as a delicacy and for snacks because they are tasty and nutritious‚ high in protein‚ and low in carbohydrates. One of the advantages with insects is their abundance and that
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INSECTS Insects‚ being larger and having a hard‚ chitinous and therefore impermeable exoskeleton‚ have a more specialised gas exchange system. Insects have no transport system so gases need to be transported directly to the respiring tissues. There are tiny holes called spiracles along the side of the insect. The spiracles are openings of small tubes running into the insect’s body‚ the larger ones being called tracheae and the smaller ones being called tracheoles. The ends of these tubes‚ which
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CHAPTER 1 THE PROBLEM AND ITS SCOPE Rationale of the study There are more than 3 000 known mosquito species. However‚ of the 150 species that are potential vectors‚ only 30 are considered dangerous. The three genera Anopheles‚ Aedes and Culex‚ from three sub-families‚ are disease relevant. The epidemiology and the life cycle stages demonstrate the importance of climatic factors and that water is the essential environmental component for mosquitoes. The immature
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Citronella leaf based herbal mosquito repellents using natural binders Nandini Rani‚ Aakanksha Wany‚ Ambarish Saran Vidyarthi and Dev Mani Pandey* Department of Biotechnology‚ Birla Institute of Technology‚ Mesra‚ Jharkhand- 835215‚ India * Corresponding author: Dev Mani Pandey‚ email: dmpandey@bitmesra.ac.in Received: 15 April 2013 Accepted: 27 April 2013 Online: 04 May 2013 ABSTRACT Citronella grass has been serving from years as a mosquito repellent in the field of ancient and modern
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A problem statement is a very common feature that is often seen within businesses and corporations. Basically‚ it is a list and description of problems that is given to a problem solving team as a sort of brief before they attempt to solve the problems. If you are putting together a team with the purpose to solve these problems‚ then some sort of problem statement is essential. Problem statements can all be different lengths and contain as little as one problem to dozens of them‚ but all good
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When victims of cybercrime seek aid from the courts‚ they expect to be compensated financially and that they would be treated with respect and that they will get help to resolve their problem (vision statement). The scale of cybercriminal activity represents a considerable challenge to law enforcement agencies and the total cost of cybercrime to society is significant. A recent report suggests that victims lose around $290 billion each year worldwide as a result of cybercrime‚ making it more profitable
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