نتایج جستجو برای: mechanical weathering

تعداد نتایج: 242214  

Journal: :Science 2013

2005
James K. Mitchell Carlos Santamarina

The understanding of soil behavior during the last 300 years has centered on mechanical principles, geological processes, and later on, mineralogy and the relevance of colloidal chemistry. More recently, research in biology and earth science has enabled important advances in understanding the crucial involvement of microorganisms in the evolution of the earth, their ubiquitous presence in near ...

2015
Gabriela Graziani Enrico Sassoni

For preservation of stones used in Cultural Heritage, affected by weathering processes that threaten their cohesion and mechanical properties, the application of consolidants is a common practice. However, available consolidating products generally exhibit some drawbacks that hinder their performance, in terms of either mechanical efficacy, compatibility with the substrate and/or durability. Et...

2006
Patrick Brennan

Sunlight is an important cause of damage to plastics, textiles, paints, and other organic materials. Short wavelength ultraviolet light has long been recognized as being responsible for most of this damage2. Spectroradiometric measurements were made to quantify the wide variations in UV content of sunlight under the following conditions: direct summer sunlight, winter sunlight, sunlight filtere...

2015
Jennifer R. Von Voigtlander Marin K. Clark Eric Hetland Chris Poulsen Marin Clark Dimitrios Zekkos Robert Anderson Kate Lowe William Greenwood

2017
Alok K. Sahu Kumarasamy Sudhakar

Keeping in view the conservation of natural resources, the power generation from the solar photovoltaic system is increasing day by day to meet the demand of energy worldwide. There are constraints of availability of space for ground mounted solar PV system for large installations. In some countries water bodies are being utilized to install solar PV system to reduce land use. Few floating syst...

2006
S. K. Noble L. P. Keller

Introduction: The term " space weathering " refers to the cumulative effects of several processes operating at the surface of any solar system body not protected by a thick atmosphere. These processes include cosmic and solar ray irradiation, solar wind im-plantation and sputtering, as well as micrometeorite bombardment [e.g. 1 and references therein]. In lunar soils the most voluminous weather...

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