Results 111 to 120 of about 5,203,756 (422)

Pairing N‐Vacancy and Adjacent Ni‐Sites in the Local Microenvironment to Regulate the Urea Oxidation Reaction Pathway With Enhanced Kinetics

open access: yesAdvanced Materials, EarlyView.
In nitrogen vacancies‐rich nickel nitride (Ni3N‐VN), a local microenvironment of nitrogen vacancies and adjacent Ni sites is formed. The electron‐rich Ni‐sites can be converted to NiOOH at a lower potential, and urea adsorption on the electron‐deficient nitrogen vacancy region is conducive to its partial dissociation, conceiving to efficient urea ...
Chengwei Ji   +10 more
wiley   +1 more source

Interactive soybean variable‐rate seeding simulator for farmers

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3554-3565, November/December 2022., 2022
Abstract Seed expense is a critical component affecting soybean (Glycine max L.) production cost. Achieving potential benefits of adjusting seeding rates by yield environment requires translation from theory to practice through decision support tools.
Adrian Correndo   +5 more
wiley   +1 more source

Ontological Foundations for Geographic Information Science [PDF]

open access: yes, 2004
We propose as a UCGIS research priority the topic of “Ontological Foundations for Geographic Information.” Under this umbrella we unify several interrelated research subfields, each of which deals with different perspectives on geospatial ontologies and ...
Egenhofer, Max   +3 more
core   +1 more source

Geographic Information System (GIS) in Public Health

open access: yesJournal of Clinical and Biomedical Sciences, 2016
Remote sensing and geographic information system (GIS) are a potential enabling technolo-gy used in public health. With the precise geo-graphic location of the incident these technolo-gies are potentially useful for infectious dis-ease ...
Dr. Geetha Srikanth
doaj   +1 more source

A Cross-Layer Design Based on Geographic Information for Cooperative Wireless Networks [PDF]

open access: yes, 2012
Most of geographic routing approaches in wireless ad hoc and sensor networks do not take into consideration the medium access control (MAC) and physical layers when designing a routing protocol. In this paper, we focus on a cross-layer framework design that exploits the synergies between network, MAC, and physical layers.
arxiv   +1 more source

Removal of Natural Organic Matter Fractions by Kaolin/Fly Ash Ceramic Microfiltration Membrane in Drinking Water: Insights from a Laboratory Scale Application

open access: yesAdvanced Materials Interfaces, EarlyView.
The prepared ceramic membrane exhibited 28.84 µm average pore size and hydrophilic properties (≈27.4° contact angle). FTIR shows the presence of aluminol, siloxane, and hydroxyl groups and XRD confirms the presence of quartz and kaolinite phases. Separation of natural organic matter from drinking water is achieved by microfiltration at 0.25 bar and is ...
Samkeliso S. Ndzimandze   +5 more
wiley   +1 more source

Does agroecosystem management mitigate historic climate impacts on dryland winter wheat yields?

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3515-3530, November/December 2022., 2022
Abstract Global studies that quantify climate effects on crop yields using top‐down spatial frameworks are invaluable for assessing generalized effects on world food supplies, yet do not contain the resolution necessary to identify local mediating effects of management. Our objectives were to identify (a) what climate factors have historically affected
Grace L. Miner   +6 more
wiley   +1 more source

Using High-Performance Computing to Address the Challenge of Land Use/Land Cover Change Analysis on Spatial Big Data

open access: yesISPRS International Journal of Geo-Information, 2018
Land use/land cover change (LUCC) analysis is a fundamental issue in regional and global geography that can accurately reflect the diversity of landscapes and detect the differences or changes on the earth’s surface.
Xiaochen Kang   +3 more
doaj   +1 more source

The Environmental Potential of Hyper-Scale Data Centers: Using Locational Marginal CO$_2$ Emissions to Guide Geographical Load Shifting [PDF]

open access: yesarXiv, 2020
Increasing demand for computing has lead to the development of large-scale, highly optimized data centers, which represent large loads in the electric power network. Many major computing and internet companies operate multiple data centers spread geographically across the world.
arxiv  

LocLinkVis: A Geographic Information Retrieval-Based System for Large-Scale Exploratory Search [PDF]

open access: yes, 2015
In this paper we present LocLinkVis (Locate-Link-Visualize); a system which supports exploratory information access to a document collection based on geo-referencing and visualization.
Claros, Rosa Merino   +2 more
core   +2 more sources

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