Glass Eels The larvae of European eels travel with the Gulf Stream across the Atlantic Ocean, and grow to 75–90 mm within one to three years, before they reach the coasts of Europe. Eels in this so-called “recruitment” developmental stage are known as Glass Eels because of the transparency of their bodies. Glass eels typically […]
Principles of Agricultural Extension Certain basic principles underlie the conduct of agricultural extension work. These principles differ with respect to the kind of community in which extension education is carried on. Extension principles may be defined as guidelines for the conduct of extension work and these principles are the bedrock upon which extension services rest.
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Knots Every one knows from experience how to create a knot. We do this all the time, often unwittingly. Knots whose ends were glued together and their classification form the subject of a branch of Topology known as the Knot Theory. On the left there is a picture of the Left Trefoil knot. On the
Neutrinos The neutrino is an elementary particle, which was postulated in 1930 by Wolfgang Pauli, 1945 Nobel Laureate in Physics, in order to solve an energy crisis in nuclear physics. Scientists had difficulty finding energy in radioactive decays and Pauli suggested the existence of a particle which he believed was carrying away the missing energy.
Mosquitoes seem to bite some people more Only the female mosquitoes bite as they are in search on isoleucine which is essential to produce amino acids. This acid is a protein which is important for humans and mosquitoes. The female mosquitoes need protein to develop eggs. Hence isoleucine is vital for mosquitoes and its best
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Ecosystem Services of Agroforestry Over the past few decades, global environmental issues and problems have increased such as alarming rate of deforestation and land degradation, increased rate of extinction of species, loss of biodiversity and ecosystem services. Ecosystem service is an umbrella term that includes multitude of natural resources and processes that exists/process within an
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Curvature of Surfaces How curved is a curve? How curved is a surface? When is a ‘curved surface’ flat? We shall only briefly mention curves in the plane and then move on to discuss positive and negative curvature of surfaces. Imagine tracing out the ellipse shown in the diagram. How does the curvature change as
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Neem – A miracle Tree The Neem Tree – whose biological name is Azadirachtaindica (also known as Indian Lilac) – is an evergreen tree that belongs to the mahogany familyhave powerful health benefits including the ability to fight with cancer. While neem is often used to make furniture, this tree also offers powerful anti-cancer and
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Puffer Fish Spirulina, a microscopic blue – green algae is one such functional food and dietary supplement which is 100% natural product with all the good qualities that nature has to offer. It is a single celled algae that lives in warm fresh water bodies. Spirulina is almost a complete functional food and dietary supplement;
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Puffer Fish Puffer fish is also known as blow fish, developed their famous “inflatability” because their slow, somewhat clumsy swimming style makes them vulnerable to predators. In lieu of escape, puffer fish use their highly elastic stomachs and the ability to quickly ingest huge amounts of water (and even air when necessary) to turn themselves