An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
case studies; development theory; geography; livelihood; natural resources; socioeconomics; women; South Africa
Abstract:
... Critical approaches to development theory and practice provide alternative perspectives that focus on counterhegemonic and discursive dimensions of the development process. Feminist development is one such approach that opens up new spaces and opportunities to promote socially progressive and sustainable economic strategies. This paper uses feminist development geography as a framework to highligh ...
anthropogenic activities; case studies; dust storms; humans; models; monsoon season; river deltas; summer; watersheds; winter; China; Mongolia; Yellow River
Abstract:
... The world’s mega-deltas are extremely important from a human perspective and attract considerable effort to reveal their evolution, growth-related driving forces, and human impacts. Here, we report a case study on the Holocene deltaic evolution of the Yellow River, through development of a conceptual model, which is compared with paleo-proxy to analyze the forcing acting on the delta. The main con ...
amylopectin; amylose; beers; carbon; case studies; chemometrics; energy; ethanol production; multivariate analysis; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... Starch is used in food- and nonfood applications as a renewable and degradable source of carbon and energy. Insight into the chemical detail of starch degradation remains challenging as the starch constituents amylose and amylopectin are homopolymers. We show that considerable molecular detail of starch fragmentation can be obtained from multivariate analysis of spectral features in optimized ¹H–¹ ...
benzophenones; drugs; photoaffinity labeling; ligands; active sites; mass spectrometry; case studies; binding capacity
Abstract:
... Photoaffinity labels are powerful tools for dissecting ligand–protein interactions, and they have a broad utility in medicinal chemistry and drug discovery. Traditional photoaffinity labels work through nonspecific C–H/X–H bond insertion reactions with the protein of interest by the highly reactive photogenerated intermediate. Herein, we report a new photoaffinity label, 2-aryl-5-carboxytetrazole ...
archaeology; case studies; computer software; geographic information systems; humans
Abstract:
... The aim of the present work is to introduce an innovative framework for employing 3D-GIS as an exploratory platform to perform visual analysis. Such a methodology is aimed at detecting patterns of visibility to simulate the past human perception of specific categories of artifacts placed inside a virtually reconstructed three-dimensional space. As a case study, the house of Caecilius Iucundus in P ...
Bayesian theory; Markov chain; algorithms; carbon; case studies; drinking water; environmental management; eutrophication; fluid mechanics; hydrologic models; margin of safety; nitrogen content; parameter uncertainty; phosphorus; pollutants; simulation models; total maximum daily load; uncertainty analysis; water pollution; water quality; China
Abstract:
... Facing increasingly serious water pollution, the Chinese government is changing the environmental management strategy from solely pollutant concentration control to a Total Maximum Daily Load (TMDL) program, and water quality models are increasingly being applied to determine the allowable pollutant load in the TMDL. Despite the frequent use of models, few studies have focused on how parameter unc ...
RNA-binding proteins; case studies; humans; mutation; non-coding RNA; prediction
Abstract:
... As one large class of non-coding RNAs (ncRNAs), long ncRNAs (lncRNAs) have gained considerable attention in recent years. Mutations and dysfunction of lncRNAs have been implicated in human disorders. Many lncRNAs exert their effects through interactions with the corresponding RNA-binding proteins. Several computational approaches have been developed, but only few are able to perform the prediction ...
buildings; carbon dioxide; case studies; crosslinking; databases; energy; environmental impact; greenhouse gas emissions; heating systems; models; monitoring
Abstract:
... The paper addresses the development of a bottom-up building stock energy model (BuilS) for identification of the building stock renovation potential by considering energy performance of individual buildings through cross-linked data from various public available databases. The model enables integration of various EE and RES measures on the building stock to demonstrate long-term economic and envir ...
agricultural land; biogas; case studies; farmers; fertilizers; grain yield; heavy metals; households; income; insulating materials; methane; nitrogen; phosphorus; rice; rural areas; temperature; China
Abstract:
... This study focuses on small-scale biogas plants with unit volumes of between 30 and 200 m³. Most small-scale biogas plants in China are in poor condition and have low utilization rates due to inaccurate designs and inappropriate maintenance. The aim of this study was to find efficiency measures to improve plant operation, and assess the suitability of the plants in the rural Chinese agricultural s ...
... We study the encapsulation of monolayers of CdSe/CdS/ZnS core/shell/shell quantum dots (QDs) in a ZnO matrix by atomic layer deposition (ALD) in order to gain insight in the interaction between quantum dots and ALD precursors and the resulting metal oxide coating. Using in situ XRF and GISAXS, we show the inhibition of ZnO growth on as-deposited QDs. Growth can, however, be triggered by exposing t ...
case studies; ecosystem services; ecosystems; interviews; land use; public services and goods; recreation; residential areas; scientists; stakeholders; urban planning; Finland
Abstract:
... The concept of ecosystem services is entering the agenda of land-use planning and scientists optimistically expect it to inform planners and decision-makers about the benefits that ecosystems provide. While tools and methods have been developed for mapping and valuing ecosystem services, only little attention has been paid to the practical application of the approach or its institutional precondit ...
acidification; ammonia; canopy; case studies; corn; ecosystem services; energy; environmental impact; eutrophication; fertilizer rates; global warming potential; grain yield; greenhouse gas emissions; leaching; life cycle assessment; models; nitrates; nitrogen; nitrogen fertilizers; nitrous oxide; nonrenewable resources; nutrient use efficiency; prediction; reflectance; soil properties; soil sampling; total nitrogen; volatilization; Missouri
Abstract:
... Crop canopy reflectance sensors make it possible to estimate crop N demand and apply appropriate N fertilizer rates at different locations in a field, reducing fertilizer input and associated environmental impacts while maintaining crop yield. Environmental benefits, however, have not been quantified previously. The objective of this study was to estimate the environmental impact of sensor-based N ...
anemometers; case studies; diurnal variation; energy; field experimentation; friction; models; monitoring; temperature; turbulent flow; wind direction; wind speed; Oklahoma
Abstract:
... Numerical-weather-prediction models are often used to supply the mean wind and turbulence fields for atmospheric transport and dispersion plume models as they provide dense horizontally- and vertically-resolved geographic coverage in comparison to typically sparse monitoring networks. Here, the Weather Research and Forecasting (WRF) model was run over the month-long period of the Joint Urban 2003 ...
case studies; energy; field experimentation; simulation models; turbulent flow; weather research and forecasting model; wind direction
Abstract:
... The Quick Urban & Industrial Complex (QUIC) atmospheric transport, and dispersion modelling, system was evaluated against the Joint Urban 2003 tracer-gas measurements. This was done using the wind and turbulence fields computed by the Weather Research and Forecasting (WRF) model. We compare the simulated and observed plume transport when using WRF-model-simulated wind fields, and local on-site win ...
Fejervarya; Pelophylax nigromaculatus; captive animals; case studies; dead animals; frogs; paddies; scavenging behavior; Japan
Abstract:
... Most of metamorphosed terrestrial frogs feed only on moving organisms and rarely exhibit scavenging behavior in nature. We here report a case of scavenging by the Japanese Rice Frog, Fejervarya kawamurai, which fed on a dead Black-spotted Frog, Pelophylax nigromaculatus at the edge of paddy field in central Japan. This observation is the first case of Fejervarya, feeding on a dead animal in nature ...
... Coastal areas are highly susceptible to the effects of climate change, particularly to sea-level rise and extreme rainfall events, resulting in increased social and environmental vulnerabilities. In this context, the need for predictive planning instruments, especially in densely populated coastal areas, is a critical management priority. A number of indexes has been developed to assess coastal vu ...
case studies; economic valuation; ecosystem services; humans; screening; stakeholders; Portugal
Abstract:
... This paper presents an innovative approach for conducting collaborative scoping processes aiming to elicit multiple values of ecosystem services. The proposed methodology rests on three steps combining different participatory tools that promote a comprehensive examination of the perceptions hold by relevant stakeholder groups. The first step consists of an institutional and stakeholder analysis de ...
Latinos; case studies; interviews; qualitative analysis; society; surveys; wildlife; Southwestern United States
Abstract:
... As American society diversifies, and the public interest in natural resources broadens, it is essential that wildlife agencies find ways to better understand and engage increasingly diverse audiences. Wildlife value orientations (WVO) is a concept that addresses this need by augmenting understanding of the different ways people perceive wildlife resources. However, as agencies apply this concept w ...
capital; case studies; cost analysis; cost benefit analysis; econometric models; energy; environmental sustainability; equations; experts; uncertainty; wind power
Abstract:
... One of the tools for maintaining environmental sustainability is transformation from fossil-based energy sources to renewable energy sources in energy consumption. Among renewable energy alternatives, wind energy is the most prominent and reliable energy source for fulfilling energy demand. Traditional investment evaluation techniques based on discounted cash flows are not capable of capturing the ...
algae; case studies; governance; marine resources; public-private partnerships; variance; Hawaii
Abstract:
... A recent metaanalysis identified certain management attributes that are associated with successful management of threshold-based systems. However, high variance among case studies indicates that these attributes do not guarantee good conservation outcomes, suggesting that additional factors may be at play. To better understand these additional factors, we compiled a list of effective governance at ...