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Upanayana is one of the sixteen samskaras or purificatory rites in which a boy is invested with the sacred thread and thus endowedwith second or spiritual birth and qualified to learn the Veda by heart. In this ceremony the boy goes to an Acarya well-versed in the Vedas with a view to be initiated into Vedic studies or a Guru draws a boy towards himself and initiates him into one of the three twice-born classes. From the day the initiation ceremony takes place the young celibate commits himself to a life of austerity and abstinence; he chooses to lead a life rigorously disciplined by vows and disciplinary rules.
This collection provides a broad overview of current research and discoveries in photonic and optoelectronic polymers. It looks at their promising applications, particularly in efficient, reliable, and low-cost technologies for storing, processing, transmitting, and displaying information. Among the main topics covered are polymers for digital and holographic information storage; electroluminescent polymers for light sources; high-speed transmission, high-power amplification, and high-speed modulation of optical signals in polymer waveguides and gradient-index fibers; self-assembly and nano-structure control for efficient photoelectronic and photonic properties; and thin-film transistors from organic semiconductors.
Of the sixteen samskaras which encompass a Hindu life the last one is performed for the dead by their sons or grandsons or relatives. Many passages in the Puranas and Dharmasastras extol the role of the son in the life of devout Hindu. The present book deals with the rite of Sraddha and vindicates the popular belief that Sraddha, being an important topic, forms an integral part of Hindu Dharmasastra. The belief in the after-death survival of deceased ancestors and their separate world belongs to the Indo-Iranian period and as such is pre-Vedic. Ancestor-worship for one's prosperity, continuation of one's race, is as old as the Rgveda. Contents Preface, Introduction, The Antyesti Samskara, Appendices, Glossary
This book aims to be the reference book in the area of oxyfuel combustion, covering the fundamentals, design considerations and current challenges in the field. Its first part provides an overview of the greenhouse gas emission problem and the current carbon capture and sequestration technologies. The second part introduces oxy-fuel combustion technologies with emphasis on system efficiency, combustion and emission characteristics, applications and related challenges. The third part focuses on the recent developments in ion transport membranes and their performance in both oxygen separation units and oxygen transport reactors (OTRs). The fourth part presents novel approaches for clean combustion in gas turbines and boilers. Computational modelling and optimization of combustion in gas turbine combustors and boiler furnaces are presented in the fifth part with some numerical results and detailed analyses.
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Scientific and commercial interest in the field of nutritional neuroscience has grown immensely over the last decade. Today, a broad range of dietary supplements, foods for weight loss, functional foods, nutraceuticals, and medical foods are widely available. Many of these products are marketed for their effects on behavior or brain function, which relates directly to nutritional neuroscience and raises issues regarding their safety and efficacy. The only comprehensive reference on this subject, Nutritional Neuroscience discusses the relationship of nutrition to behavior and neuroscience. Following a review of fundamental issues and methods, the book covers the effects of macronutrients and ...
Environmental stresses and metabolic by-products can severely affect the integrity of genetic information by inducing DNA damage and impairing genome stability. As a consequence, plant growth and productivity are irreversibly compromised. To overcome genotoxic injury, plants have evolved complex strategies relying on a highly efficient repair machinery that responds to sophisticated damage perception/signaling networks. The DNA damage signaling network contains several key components: DNA damage sensors, signal transducers, mediators, and effectors. Most of these components are common to other eukaryotes but some features are unique to the plant kingdom. ATM and ATR are well-conserved member...
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