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Direct current machines are a quickly evolving domain whose
applications affect many aspects of modern life from computers and
printers to toys, electric vehicles, and traction applications. As
their many uses continue to grow, it has become apparent that
understanding these machines is the key to understanding our
future. Operation, Construction, and Functionality of Direct
Current Machines brings together many concepts, from the most basic
working principles and construction of DC machines to more advanced
topics such as electro-magnetism, armature reaction, parallel
operations, and many more. Highlighting theoretical concepts and
numerical problems, this book is an essential reference source for
students, educators, and anyone interested in the field of electric
machines.
Sunflower is one of the four major oilseed crops produced in the
world. The sunflower oil is preferred over other vegetable oil
because of its specific characteristics as it is very easy to
refine, has good digestibility, and low level of cholesterol and
saturated fats. The yield of this valuable crop is decreasing
tremendously due to charcoal rot disease caused by Macrophomina
phaseolina. Synthetic chemicals are being used to control the
fungal diseases. However, increasing public concern on
environmental issues requires alternative disease management
systems, which are based on naturally occurring compounds. The
present study was designed to evaluate antifungal activity of three
Chenopodium species viz. C. album, C. murale and C. ambrosioides
against M. phaseolina. All the parts of the selected Chenopodium
species exhibited promising antifungal activity against the noxious
charcoal rot pathogen. This book is very useful for those
researchers who are in search of naturally occurring environment
friendly compounds for the management of plant diseases.
"Let us be clear: micro finance is not the charity. It is the way
to extend the same rights and resources to low income households
that are available to everyone else. It is recognition that poor
people are the solution, not the problem. It is way to build their
ideas, energy and vision. It is a way to grow productive enterprise
and to allow communities to prosper" (Kofi Annan)
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