Kirjojen hintavertailu. Mukana 11 244 527 kirjaa ja 12 kauppaa.
Kirja.info

Kirjahaku

Etsi kirjoja tekijän nimen, kirjan nimen tai ISBN:n perusteella.

311 tulosta hakusanalla Sourav Singh

Tacticity Tailored ROP of rac-Lactide & CO2/Epoxide Copolymerization

Tacticity Tailored ROP of rac-Lactide & CO2/Epoxide Copolymerization

Sourav Singha Roy

Eliva Press
2025
pokkari
The properties of polylactic acid (PLA) are influenced by molecular weight, distribution, and tacticity. Among the different tacticity forms, stereoblock isotactic and isotactic-enriched PLA exhibit superior mechanical properties, making them suitable for various applications. In contrast, heterotactic-enriched and atactic PLAs have limited use. Isotactic PLA is typically produced through the ring-opening polymerization (ROP) of lactide using enantiopure monomers, while isotactic-stereoblock PLA can be synthesized from rac-lactide using a chiral catalyst that selectively favors one enantiomer. However, both methods are economically challenging due to the high costs of enantiopure monomers and chiral catalysts. This study aims to develop an achiral ligand framework for a more cost-effective catalyst, enabling lower production costs. The stereocontrolled ROP of rac-lactide with an achiral catalyst operates via a chain-end control mechanism and relies heavily on catalyst design. Previous literature has linked PLA chain tacticity to the metal center employed and the ligand's steric and electronic characteristics. Our research focuses on establishing the relationship between the PLA chain's tacticity and the symmetry of the catalyst framework. Additionally, aliphatic polycarbonates (APCs) are biodegradable polymers formed through the ROCOP of CO2 with epoxides, leading to kinetically stable APCs. Key factors affecting the formation of APCs include catalyst type, cocatalyst nature, and other environmental parameters. Our research emphasizes synthesizing organometallic compounds based on aluminum, zinc, and magnesium, using iminophenolate-based achiral ligands. We aim to optimize the ROCOP of epoxides and CO2 to favor aliphatic polycarbonate production.
Vertaile hintoja
Zazbaat / ??????

Zazbaat / ??????

Saurav Singh

Notion Press, Inc.
2020
pokkari
Zazbaat: The pure heart feeling Have you ever had crush on someone or got a heartbreak? You Have must either had a crush on someone or got a heartbreak for onece atleast. Every single person in this world have gone through all this atleast once in their life and if you are exeption then probably there is so much on the way for you. If you already gone through it you will remember those precious time of yours and those who have not still gone through this just feel the love. This book have a pure love feeling of heart.
Vertaile hintoja
The Sourav Ganguly (Color)

The Sourav Ganguly (Color)

Notion Press, Inc.
2021
pokkari
Short biography of Sourav Ganguly and about life, during writing this book no character & no religious are harmed written by mr vivek kumar pandey. winner youngest writer award 1st rank in india 2020.He is only one writer can publish 600+ own book that was greatest successfull in his life.
Vertaile hintoja
Riverbank Erosion Hazards and Channel Morphodynamics

Riverbank Erosion Hazards and Channel Morphodynamics

Sourav Dey; Sujit Mandal

TAYLOR FRANCIS LTD
2022
sidottu
This book explores fluvial processes and their consequences on river dynamics in India. It discusses the integration of geomorphic, hydrologic, and socio-economic data with various policies and decisions regarding sustainable river basin management. The volume looks at the origin and development of streams, chronology of fluvial geomorphology, fluvial system concept, process–form interaction, river dynamics, channel migration, flow regime, channel types, and hydraulic and morphometric parameters; and explains how changing hydro-geomorphological dynamics have influenced land use patterns, nature of fluids, behaviour of floods, etc. It examines channel migration vulnerability and bank erosion hazard vulnerability of the Torsa River in the eastern region of India as a case study using channel migration zone and Bank Erosion Hazard Index models. The book presents a new research framework based on field surveys, scientific investigations, and analytical techniques and methods to interpret key geoinformatics data.With its extensive illustrations, this book will be useful to students, teachers, and researchers of geography, earth sciences, environmental geology, and environment and disaster management. It will also interest geographers, civil engineers, hydrologists, geomorphologists, planners, and other individuals and organizations working on fluvial processes and riverbank erosion problems globally.
Vertaile hintoja
Metamaterials in Topological Acoustics

Metamaterials in Topological Acoustics

Sourav Banerjee

TAYLOR FRANCIS LTD
2023
sidottu
As an equivalent counterpart of topological research on photonics and condensed matter physics, acoustic metamaterials create an opportunity to explore the topological behaviors in phononics and physics of programmable acoustics. This book introduces the topological behavior of acoustics through the novel design of metamaterials. It provides valuable insight into acoustic metamaterials, from multidisciplinary fundamentals to cutting-edge research. Serves as a single resource on acoustic metamaterials Covers the fundamentals of classical mechanics, quantum mechanics, and state-of-the-art condensed matter physics principles so that topological acoustics can be easily understood by engineers Introduces topological behaviors with acoustics and elastic waves through quantum analogue Hall effects, quantum spin Hall effects, and quantum valley Hall effects and their applications Explains the pros and cons of different design methods and gives guidelines for selecting specific designs of acoustic metamaterials with specific topological behaviors Includes MATLAB® code for numerical analysis of band structures This book is written for graduate students, researchers, scientists, and professionals across materials, mechanical, civil, and aerospace engineering, and those who want to enhance their understanding and commence research in metamaterials.
Vertaile hintoja
Metamaterials in Topological Acoustics

Metamaterials in Topological Acoustics

Sourav Banerjee

TAYLOR FRANCIS LTD
2025
nidottu
As an equivalent counterpart of topological research on photonics and condensed matter physics, acoustic metamaterials create an opportunity to explore the topological behaviors in phononics and physics of programmable acoustics. This book introduces the topological behavior of acoustics through the novel design of metamaterials. It provides valuable insight into acoustic metamaterials, from multidisciplinary fundamentals to cutting-edge research. Serves as a single resource on acoustic metamaterials Covers the fundamentals of classical mechanics, quantum mechanics, and state-of-the-art condensed matter physics principles so that topological acoustics can be easily understood by engineers Introduces topological behaviors with acoustics and elastic waves through quantum analogue Hall effects, quantum spin Hall effects, and quantum valley Hall effects and their applications Explains the pros and cons of different design methods and gives guidelines for selecting specific designs of acoustic metamaterials with specific topological behaviors Includes MATLAB® code for numerical analysis of band structures This book is written for graduate students, researchers, scientists, and professionals across materials, mechanical, civil, and aerospace engineering, and those who want to enhance their understanding and commence research in metamaterials.
Vertaile hintoja
123...16