Results 91 to 100 of about 159,207 (172)

Afforestation Partially Offsets Losses of Soil Conservation Services and Carbon Stock From Direct and Indirect Urban Expansion in China

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Urban expansion has exerted both direct and indirect impacts on natural land and ecosystem services it supports, driven by increasing population and food demand, yet these underlying pathways remain insufficiently distinguished. Here, we quantified the losses of soil conservation services (water erosion regulation and sandstorm prevention) and
Shuai Liu   +4 more
wiley   +1 more source

Indium‐Free Silicon Heterojunction Solar Cells: Achieving High Conductivity With Magnetron‐Sputtered SnO2

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
Amorphous SnO2 films with low resistivity (~1.2 × 10−3 Ωcm) were realized by low‐temperature magnetron sputtering through control of O2 flow ratio, substrate temperature, and H incorporation. Si heterojunction solar cells incorporating these films achieved a conversion efficiency of 21.1%, approaching that of cells based on MS‐ITO and RPD‐SnO2 ...
Takashi Koida   +2 more
wiley   +1 more source

The Doppler Spectra of Medium Grazing Angle Sea Clutter; Part 1: Characterisation [PDF]

open access: yes, 2016
This paper is concerned with the characterisation of Doppler spectra from high range resolution X-band radar sea clutter observed from an airborne platform over the range of grazing angles, 15° to 45°.
Rosenberg, L   +3 more
core  

Right to Food in Sub‐Saharan Africa: Challenges, Policies, and Sustainable Strategies

open access: yesSustainable Development, EarlyView.
ABSTRACT This article examines the multifaceted issue of food security in Sub‐Saharan Africa and the critical importance of upholding rights to food in the region. It explores the challenges posed by food insecurity, analyzes existing policies and interventions, and proposes sustainable strategies to enhance food security.
Helen Onyeaka   +6 more
wiley   +1 more source

DEVELOPMENT AND FEDERAL GRAZING POLICY IMPACTS ON TWO COLORADO COUNTIES: A COMPARATIVE STUDY [PDF]

open access: yes
Ranchers have concern over how federal policies such as the Endangers Species Act, the Clean Water Act, and other laws and regulations will affect the status of their ranching operations.
Barlett, E. Tom, Rowe, Helen Ivy
core  

Characterization of a grazing incidence spectra-imager laboratory model for solar observation [PDF]

open access: yes, 2011
This thesis describes the work made on the optical characterization of a laboratory demo-model stigmatic grazing-incidence spectra-imager for solar investigation.
Miotti, Paolo
core  

Cost Behavior of Organic Versus Conventional Farms: Assessing Economic Resilience and the Ecological Dividend

open access: yesSustainable Development, EarlyView.
ABSTRACT This study empirically examines the cost behavior in organic versus conventional farming to assess economic resilience. Using Spanish FADN data (2015–2021), results show organic farms exhibit higher cost elasticity during output increases and lower elasticity during decreases.
Josep M. Argilés‐Bosch   +6 more
wiley   +1 more source

Liquid‐Processed 2D Aromatic Amorphous Carbon: Defect Engineering and Universal Transport Scaling

open access: yesSmall, EarlyView.
Liquid‐processed graphene oxide (GO) thin films undergo a controllable crystalline–to–amorphous transition driven by thermal quenching. By kinetically tuning oxygen‐driven defect formation during reduction, scalable 2D aromatic amorphous carbon phases are stabilized, directly linking nanoscale disorder and defect topology to electronic transport ...
Fabiola Liscio   +22 more
wiley   +1 more source

GRAZING ON PUBLIC LANDS IN THE 21ST CENTURY [PDF]

open access: yes
A panel of professionals from the ranching, environmental, agency, and university communities was assembled to examine trends relating to the future of grazing on federal lands.
Van Tassell, Larry W.   +2 more
core  

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