Dentistry is ever changing science, new research and clinical experience expand the horizon of knowledge, with demand for advancement in materials and techniques. The primary goal of endodontic therapy is to create an environment within in the root canal system to allow healing and continued maintenance of the health of the periradicular tissues. Most common cause of endodontic failure has been attributed to incomplete obturation of canal space. The concept of obturation graves the basis of obturation, need, timing and extent of obturation. The importance of hermetic seal lies in obturation...

This book is intended to meet the academic requirements of the subject Environmental Sciences, Botany, Microbiology, Biotechnology, and Biochemistry for graduate, postgraduate, and research students in Indian Universities irrespective of their major subject o study. While meeting the exact knowledge, this book has a holistic approach to the subject for easy and logical comprehension. The contents have been prepared to keep in mind the widest possible variations in the background of the user. Comprehensive and balanced coverage of the entire syllabus is the hallmark of this book.

L'augmentation de la population mondiale est associée à une demande croissante de nourriture, mais il est également nécessaire de réduire la détérioration progressive de l'environnement. Les déchets de plumes sont générés en grandes quantités en tant que sous-produits de la transformation commerciale de la volaille. La plume de poulet est le principal sous-produit généré en millions de tonnes par la transformation commerciale de la volaille, s'accumulant à un rythme plus élevé. La population mondiale a dépassé les 7,7 milliards en avril 2019 selon les estimations les plus...