This book describes various hybrid machining and finishing processes. It gives a critical review of the past work based on them as well as the current trends and research directions. For each hybrid machining process presented, the authors list the method of material removal, machining system, process variables and applications. This book provides a deep understanding of the need, application and mechanism of hybrid machining processes.
This book sheds light on the development of Pulsed-Electrochemical Honing (PECH), a unique hybrid finishing process, which has capabilities of finishing intricate shaped components (especially gears). The text covers the fundamentals of the process, and details all parameters of PECH in the finishing of straight bevel gears. It discusses all important aspects of electrochemical honing, and details recent developments in tools, technologies, controls and operations.
Dendrimers, hyperbranched macromolecules, emerged just few decades ago but show promising potential as drug delivery nanocarriers, theranostic agents and gene vectors; in the pharmaceutical research and innovation area as well as in other healthcare applications. Although tremendous advancements have been made in dendrimer chemistry and their applications since their emergence, the synthesis, development and design of pure and safe dendrimer-based products have been a major challenge in this area. This book, edited by well-known researchers in the area of nanomaterials and drug-based drug delivery applications, exhaustively covers the nanotechnological aspects, concepts, properties, characterisation, application, biofate and regulatory aspects of dendrimers. It includes sixteen vivid chapters by renowned formulators, researchers and academicians from all over the world, highlighting their specialised areas of interest in the fields of chemistry, biology, pharmacy and nanomedicine. Features: • Highlights dendrimers’ advancements in nanomedicine in the development of safe healthcare and biotechnological products • Covers physicochemical aspects, biofate, drug delivery aspects and gene therapy using dendrimers • Covers biomedical application of dendrimers in the field of biological sciences • Gives examples of dendrimer–guest interaction chemistry Dendrimers in Nanomedicine: Concept, Theory and Regulatory Perspectives provides the comprehensive overview of the latest research efforts in designing, optimising, development and scale-up of dendrimer-mediated delivery systems. It analyses the key challenges of synthesis, design, molecular modelling, fundamental concepts, drug delivery aspects, analytical tools and biological fate as well as regulatory consideration to the practical use of dendrimer application. Dr. Neelesh Kumar Mehra Assistant Professor of Pharmaceutics in the Department of Pharmaceutics at the National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad, India. He has authored more than sixty peer-reviewed publications in highly reputed international journals, as well as book chapters and contributions on two patents. Dr. Mehra has 11 years of rich research and teaching experience in the formulation and development of complex, innovative biopharmaceutical products including micro- and nanotechnologies for regulated markets. Dr. Keerti Jain Assistant Professor of Pharmaceutics in the Department of Pharmaceutics, NIPER, Raebareli, India. For more than 10 years, she has been actively engaged in formulation and development of nanomedicines. Dr. Jain has supervised masters and doctoral pharmaceutics students in their research works which have been published in high quality, good impact factor journals. She has also authored more than 60 international manuscripts in peer reviewed high impact journals. In 2019, she was awarded the prestigious ICMR-Amir Shakuntala Award.
This work describes an experimental investigation with the aim to evaluate and establish wire spark erosion machining (WSEM) as a viable alternative for high quality miniature gear manufacturing. External spur type miniature brass (ASTM 858) gears with 12 teeth, 9.8 mm outside diameter and 5 mm face width were manufactured by WSEM. The research work was accomplished in four distinct experimental stages viz., preliminary, pilot, main and confirmation. The aim, scope and findings of each stage are progressively presented and discussed. In essence, the investigation found that it was possible to manufacture miniature gears to high quality by using WSEM. Gears up to DIN 5 quality with a good surface finish (1.2 μm average roughness) and satisfactory surface integrity were achieved. The results suggest that WSEM should be considered a viable alternative to conventional miniature gear manufacturing techniques and that in some instances it may even be superior. This work will prove useful to researchers and professionals in the field of miniature and micro-scale manufacturing and machining.
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