S. K. Gupta

Concepts of Commerce for Class 11 is the latest Edition from Oswal Publishers for students of the ISC Board. It follows the New Syllabus from the CISCE Council, New Delhi. Chapters contain summaries at the end to enable quick revisions, Illustrations and Tables have been provided to help with subject clarity. Self- assessment modules include Very Short, Short and Long Answer Type questions. Sample Papers based on Previous year board exam papers and Project Work also included for deeper subject expertise.

This title examines fundamental concepts and practices of sustainable agriculture with focus on soil management, water conservation, and watershed development. It addresses organic farming systems and integrated nutrient management including use of bio-fertilizers, vermicompost, and natural pest control methods. Chapters explore role of agroforestry systems and cover crops in maintaining soil health and ecosystem sustainability, and also: Examines fundamental concepts of sustainable agriculture with focus on soil tillage practices, water management, and watershed development for sustaining crop productivity and food security. Addresses organic farming systems and integrated nutrient management approaches including use of bio-fertilizers, vermicompost, and earthworms for sustainable agricultural production. Covers natural pest management strategies and biological control methods for checking crop pests without chemical interventions in sustainable farming systems. Explores role of agroforestry systems and cover crops in maintaining soil health, biodiversity conservation, and sustainability of agricultural ecosystems. Examines indigenous technological knowledge and traditional farming practices with emphasis on their relevance and application in modern sustainable agriculture. This title has been co-published with NIPA. T&F does not sell or distribute the print editions in Bangladesh, Bhutan, India, Nepal, Pakistan, and Sri lanka.

In recent years, impressive progress has been made in the biochemical and molecular characterization of both the spermatozoon and the oocyte. The use of animal models with genetic mutations or “knocked-out” genes has enhanced our understanding of the growth, development and function of the male and female gamete. Significant progress also has been made in elucidating the cellular and molecular basis of the sperm-egg interaction leading to fertilization. These recent findings will hopefully enable the development of both more appropriate treatment strategies for overcoming infertility and novel contraceptives.

Fluid mechanics is an important subject in conventional and non-conventional engineering fields. Listing of engineering disciplines having applications of fluid mechanics may be a daunting task yet the immediate ones that come to mind are: civil, mechanical, electrical, agriculture, dairy, structural, industrial, navel architecture, space and biomedical engineering. While conventional engineers may be interested in its applications to solve industrial problems, space engineers may be interested in designing space shuttles having low resistance, high speeds and high "lift" force. The focus of this book is elements of fluid mechanics having relevance to undergraduate students of agricultural, dairy and civil engineering. The content of this book are as per the Dean's Committee recommendations for Agriculture and Dairy engineering. Additional chapters have been included to cover the course content taught to civil engineering students of the affiliating universities. The book is divided into three sections with well-defined thirteen chapters. These include: Introduction to fluid mechanics, Pressure and pressure measurement, Archimedes law and stability of floating bodies, Fluid kinematics and visualization, Fluid dynamics: mass and energy conservation, Flow measurement: weirs notches and orifices, Open channel flow, Pipe flow, Hydraulic losses in pipes, Dimensional analysis and similitude, Introduction to fluid machinery, Reciprocating pumps and Hydrodynamic pumps. The book is in simple and easy to understand english. The book is highly illustrated. Both theory and objective type questions have been included for the benefit of the students. The author believes that the book should prove to be a valuable textbook to students and staff of engineering colleges across disciplines. It can prove to be a valuable academic asset for libraries of colleges and universities world wide.

Trypanosomosis is one of the most prevalent haemoprotozoan disease of livestock widely distributed in tropical and subtropical countries including India during and immediately after rainy season, but it is also prevalent year around depending on agro-climatic conditions and immune status of animals. This text book describes the sero-prevalence, clinical findings, hematobiochemical alterations, diagnosis and treatment aspects of Trypanosoma evansi infection in equines. Several chemotherapeutic drugs have been tried against Trypanosomes but their use is limited because of toxicity, inability to bring about complete sterilization and cost factor. Keeping in view the current scenario two different trypanocidal drugs are comparatively evaluated. This book will provide practical knowledge regarding distribution, clinical signs, diagnosis and treatment of equine Trypanosomosis.