Tag: Substitute

Substitute Parents Biological and Social Perspectives on Alloparenting in Human Societies


Free Download Gillian Bentley, "Substitute Parents: Biological and Social Perspectives on Alloparenting in Human Societies "
English | ISBN: 0857456415 | 2012 | 372 pages | PDF | 2 MB
From a comparative perspective, human life histories are unique and raising offspring is unusually costly: humans have relatively short birth intervals compared to other apes, childhood is long, mothers care simultaneously for many dependent children (other apes raise one offspring at a time), infant mortality is high in natural fertility/mortality populations, and human females have a long post-reproductive lifespan. These features conspire to make child raising very burdensome. Mothers frequently defray these costs with paternal help (not usual in other ape species), although this contribution is not always enough. Grandmothers, elder siblings, paid allocarers, or society as a whole, help to defray the costs of childcare, both in our evolutionary past and now. Studying offspring care in a various human societies, and other mammalian species, a wide range of specialists such as anthropologists, psychologists, animal behaviorists, evolutionary ecologists, economists and sociologists, have contributed to this volume, offering new insights into and a better understanding of one of the key areas of human society.

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Bioethanol A Green Energy Substitute for Fossil Fuels


Free Download Bioethanol: A Green Energy Substitute for Fossil Fuels
English | 2023 | ISBN: 3031365410 | 605 Pages | PDF EPUB (True) | 24 MB
This book looks deeply into the prospects for using ethanol as a greener alternative to fossil fuels and the technical and scientific issues that surround them. Ethanol, with its numerous advantages, has emerged as a promising contender to replace gasoline as a fuel source. Currently, it is commercially available as a blend with gasoline, commonly known as E10 and E25, utilizing various ratios of ethanol. Despite its clear benefits over gasoline, the widespread adoption of ethanol as a fuel remains hindered by its limited availability. In this insightful book, we aim to explore the multifaceted challenges surrounding ethanol’s full integration into our energy landscape, employing a comprehensive approach through review manuscripts. Leading worldwide experts, known for their deep understanding of ethanol as a fuel, have contributed to the book. Their valuable insights and contributions enrich the book’s content, offering readers a comprehensive exploration of the subject matter. This book is a compelling resource for researchers, energy professionals, and anyone interested in understanding the challenges and opportunities associated with the integration of ethanol as a substitute for gasoline.

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