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A Comprehensive Evaluation of the Antenna Multi-Array structures

A Comprehensive Evaluation of the Antenna Multi-Array structures

Thippeswamy G R; Preethi M P; Mamatha C M

Lap Lambert Academic Publishing
2023
pokkari
The research work presented here is primarily intended to analyze geometrical features of fractals that influence the performance of antennas using them. Several antenna configurations based on fractal geometries have been reported in recent years. Modern telecommunication systems require antennas with wider bandwidths and smaller dimensions than conventionally possible. This has initiated antenna research in various directions, one of which is by using fractal shaped antenna elements. In recent years several fractal geometries have been introduced for antenna applications with varying degrees of success in improving antenna characteristics. Some of these geometries have been particularly useful in reducing the size of the antenna, while other designs aim at incorporating multi-band characteristics. Furthermore, design equations for these antennas are obtained in terms of its geometrical parameters such as fractal dimension. Antenna properties have also been linked to fractal dimension of the geometry.
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Insect Diversity in Paddy Fieldsof Kanakkampalayam, Athani and Mevani

Insect Diversity in Paddy Fieldsof Kanakkampalayam, Athani and Mevani

Umamaheswari Sivaprakasam; Madhiyazhagan P Syed Ali Fathima K M; Rajarajeswari A Preethi M

Lap Lambert Academic Publishing
2024
pokkari
The study of biodiversity associated with agro-ecosystems such as rice fields is of significance for agroecologists and conservation biologists. Order Lepidoptera diversity was studied in their level of species richness. In view of these facts the present study was designed to study the diversity and distribution of insects in Kanakkampalayam, Athani and Mevani, Erode district. Increased human activities and unfavourable climatic conditions, urbanization also influences the distribution of insects in the study area. This book provides the biodiversity of Insects in a particular village in our Erode district. This book designed to serve and documented as a text and guide for Entomology and Research scholars. It contains simplified presentations with chart, tables and plates to help the readers easily understanding the collection of insects. The book aims to be a complete handy guide to preparing for projects.
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Foundation for Integrating Employee Health Activities for Active Duty Personnel in the Department of Defense

Foundation for Integrating Employee Health Activities for Active Duty Personnel in the Department of Defense

Gary Cecchine; Elizabeth M Sloss; Christopher Nelson; Gail Fisher; Preethi R Sama

RAND
2009
pokkari
The authors describe current Department of Defense safety and occupational health programs and health information systems, as well as employee health programs outside of DoD to provide a foundation for considering a more integrated Department of Defense employee health program.
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Anwendung von Kaltplasma in der Lebensmittelsicherheit und -qualität

Anwendung von Kaltplasma in der Lebensmittelsicherheit und -qualität

M Balakrishnan; P Preetha

International Book Market Service Ltd
2021
pokkari
Kaltes Plasma ist eine neuartige, nicht thermische Lebensmittelverarbeitungstechnologie, die energetische, reaktive Gase zur Inaktivierung von kontaminierenden Mikroben auf Fleisch, Gefl gel, Obst und Gem se verwendet. Die mikrobielle Inaktivierung erfolgt haupts chlich durch UV-Licht und reaktive chemische Produkte des Kaltplasma-Ionisierungsprozesses. Kalte Plasmasysteme arbeiten bei Atmosph rendruck oder in Niederdruck-Behandlungskammern. Bei Krankheitserregern wie Salmonellen, Escherichia coli O157: H7, Listeria monocytogenes und Staphylococcus aureus k nnen Reduktionen von mehr als 5 logs erzielt werden. Die effektiven Behandlungszeiten reichen von 120 s bis zu nur 3 s, abh ngig von den behandelten Lebensmitteln und den Verarbeitungsbedingungen. Die wichtigsten Einschr nkungen f r die Kaltplasmabehandlung sind der relativ fr he Stand der Technologieentwicklung, die Vielfalt und Komplexit t der erforderlichen Ger te sowie die weitgehend unerforschten Auswirkungen der Kaltplasmabehandlung auf die sensorischen und ern hrungsphysiologischen Eigenschaften der behandelten Lebensmittel.
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