Results 131 to 140 of about 50,628 (314)

Sand Creek Watershed Project / Sand Creek Watershed Management Plan

open access: yes, 2003
The overall goal of the Sand Creek Watershed Project is to improve and protect the designated uses of the watershed. In order to achieve this overall goal and attain compliance with the TMDL established in Sand Creek, four goals have been established ...
Annis Water Research Institute
core  

Engineering characterisation of Norwegian glaciomarine silt

open access: yes, 2010
Guidance is provided for geotechnical engineers designing civil engineering works in silty soils based on a detailed characterisation of a glaciomarine silt from Os in western Norway.
Long, Michael   +4 more
core   +1 more source

Oxidative Fast Pyrolysis Enabling Autothermal Production of Porous Functionalized Biochar and Anhydrosugar/Phenol‐Rich Bio‐Oil From Biomass

open access: yesCarbon Energy, EarlyView.
Oxidative fast pyrolysis of biomass enables autothermal production of value‐added products. ABSTRACT Oxidative fast pyrolysis can potentially overcome the heat‐supply bottleneck of conventional fast pyrolysis by enabling autothermal operation while also tailoring product quality through controlled oxygen addition.
Bin Li   +15 more
wiley   +1 more source

Сравнителна характеристика на хумусното състояние в Пясъчни почви от района на Българското Черноморско крайбрежие и тези от крайдунавските низини

open access: yesПочвознание, агрохимия и екология, 2015
Humus content and composition for Sand Soils (Arenosols) of Bulgarian sea coast is in direct correlation of the ages of parent materials. The ages of sea ledges and time for soil formation are in direct relationship of relief and micro relief of the ...
ИВАЙЛО КИРИЛОВ   +2 more
doaj  

The Consistency of Sand-Clay Mixed Soils [PDF]

open access: yes, 2015
application/pdfIn order to investigate the consistency characteristics of sand-clay mixed soils, a series of consistency limit tests was performed on sand and clay mixtures with various fine-grained soils content.
熊本, 直樹   +2 more
core  

Key Challenges for Commercializing Perovskite–Silicon Tandem Solar Cells

open access: yesCarbon Energy, EarlyView.
This review discusses the scientific and technological challenges in advancing perovskite–silicon tandem solar cells (PSTSCs) from lab‐scale to commercial viability, focusing on long‐term stability, scalability, and economic feasibility. Key issues include intrinsic and extrinsic degradation factors, installation conditions, environmental impacts, and ...
Bilal Mehmood   +16 more
wiley   +1 more source

Biotic and Abiotic Controls on Calcium Carbonate Formation in Soils [PDF]

open access: yes, 2010
Over half of the carbon (C) taking part in the global C cycle is held in terrestrial systems. Because of the sensitivity of the C cycle to changes in such soil-based pools of carbon, it is important to understand the basic mechanisms by which soil C is
Versteegen, Audrey
core  

Boosting Bifacial Output Power of Ag‐CIGS Solar Cells by Optimizing ITO Back‐Contact Thickness for Tandem Applications

open access: yesCarbon Energy, EarlyView.
Optimized ITO back contact with pre‐Ga supply growth and Ag incorporation suppresses GaOx formation and interface recombination in bifacial CIGS solar cells. The devices achieve 17.25% front and 5.77% rear efficiency, delivering record bifacial power density up to 32.26 mW cm−2 in 4T perovskite/CIGS tandem architectures under enhanced albedo ...
Amanat Ali   +13 more
wiley   +1 more source

The Effect of Non-Plastic Fines Content on Pore Pressure Generation Rates in Cyclic Triaxial and Cyclic Direct Simple Shear Tests

open access: yesEng
When loose, saturated sands and non-plastic silts are subjected to undrained cyclic loading, they will generate positive pore pressures. This increase in pore pressures leads to a decrease in effective stress with a corresponding decrease in shear ...
Carmine P. Polito   +2 more
doaj   +1 more source

The influence of suction changes on the stiffness of railway formation

open access: yes, 2011
Despite compacted soils being unsaturated, geotechnical design is predominantly based on saturated soils,despite it being known that differences exist between the behaviour of saturated and unsaturated soils.Suction in soils has been shown to increase ...
Otter, Louise
core  

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