Автор: Martin Hertz Название: Unsaturated Soils: Behavior, Mechanics and Conditions ISBN: 1536159859 ISBN-13(EAN): 9781536159851 Издательство: Nova Science Рейтинг: Цена: 13462.00 р. Наличие на складе: Невозможна поставка.
Описание: This compilation opens with an exploration of the vadose, or unsaturated zone, which is of utmost importance as the nexus between surface water and groundwater. It is the link between what happens on the surface and what happens below, inside the aquifers. As such, understanding this underground natural environment is essential for the sustainable development of society. Due to the complexities involved in considering the hysteretic response of the Soil Water Characteristic Curve and its dependency on volume changes, these two features are often ignored in numerical studies of unsaturated soils. To facilitate their use in numerical modeling, a model for the Soil Water Characteristic Curve equation based on the bounding surface concept is proposed. The authors go on to focus on the temperature distribution and water migration in unsaturated soil, which is of significant importance because these factors are related to the thermal-physical properties of soil. The changes in these properties may cause disastrous engineering problems such as the cracking of pavement, damage of structure foundation and fracture of pipelines. Lastly, the book addresses the measurement and expression of the mass chemical potential in the presence of superficial layers induced by a complex structure. By definition, the mass chemical potential of a constituent in a soil represents the variation of the internal energy of the medium when a unit mass of the constituent is transferred to a reference state with the entropy, volume and mass of the other constituents remaining constant.
Автор: Soi Martha Название: Widowhood: My Journey ISBN: 1973696061 ISBN-13(EAN): 9781973696063 Издательство: Неизвестно Рейтинг: Цена: 2726.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
When the foundation of your world is shaken, what can one do?
Experience a journey of a woman widowed at a young age in a patrilineal society, an environment that limits choices about her future. Through sheer handwork, determination and faith in God, she is able to balance societal, Christian and personal values and stand for not only herself but for her children too.
Автор: R E Hester, R M Harrison Название: Soils and Food Security ISBN: 1849734267 ISBN-13(EAN): 9781849734264 Издательство: ORCA BOOK SERVICES Рейтинг: Цена: 13943.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book, the 35th volume of Issues in Environmental Science and Technology, examines the current status of soils across the globe and their potential for food production to meet the needs of the World`s population in the 21st Century.
Автор: Alexander Earl B. Название: Soils in Natural Landscapes ISBN: 1466594357 ISBN-13(EAN): 9781466594357 Издательство: Taylor&Francis Рейтинг: Цена: 19906.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
In any complete investigation of terrestrial ecosystems, rocks and soils must be considered. Soils are essential resources, providing water and nutrients for vascular plants, and mitigating the flow of water from the land. In addition, soil diversity is critical for biotic diversity. While there are many references on the agricultural perspective of soils, there is a need for a basic soils book for those concerned with natural landscapes and ecosystems. Soils in Natural Landscapes fills this niche, providing a thorough introduction to the physics, chemistry, and biology of soils and their roles in local to global systems.
The book begins by describing the field of soils and the major roles of soils in natural landscapes. The chapters that follow cover a range of topics:
Soil parent material
Architecture of soils
Temperature and soils
Water, air, and climate
Classification of soils
Soil landscapes
Plant nutrition
Soil organisms
Organic matter in soils
The author also discusses global issues such as water and carbon cycles, global warming, and acid rain. He addresses land management for different uses, soil quality, and soil degradation. Using an interdisciplinary approach, this book provides practical insights for the evaluation of soils in natural environments and their non-intensive management.
