Results 101 to 110 of about 8,326,295 (377)

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

SOME ASPECTS GEOGRAPHICAL - HISTORICALLY THINKING IN THE CONTEXT OF THE TIME: REVIEW OF LITERATURE

open access: yesRevista Geográfica Acadêmica, 2020
The main objective of this paper confirm the importance understanding that are historical events and geographical factors in interdependence, that everything that relates with human population and vital for it takes place the geographical area that are
Goran Rajović, Jelisavka Bulatović
doaj   +1 more source

Structural Insights Into Aluminum‐Doped Manganese Dioxides as Promising Materials for Direct Lithium Extraction: Modeling and Mechanism Study

open access: yesAdvanced Materials Interfaces, EarlyView.
A two‐stage sorption mechanism is proposed for Al‐doped HMnO in direct lithium extraction. Batch sorption experiments and modeling identify two key sorption sites on Al‐HMnO: surface sites (planar and edge) and vacancy sites (W). At pH 12, Stage I involves surface ion exchange, followed by Stage II, where surface complexation occurs between Li⁺ ions ...
Shuxuan Yan   +6 more
wiley   +1 more source

On the Complexity of the Mis\`ere Version of Three Games Played on Graphs

open access: yes, 2015
We investigate the complexity of finding a winning strategy for the mis\`ere version of three games played on graphs : two variants of the game $\text{NimG}$, introduced by Stockmann in 2004 and the game $\text{Vertex Geography}$ on both directed and ...
Renault, Gabriel, Schmidt, Simon
core  

RE-EVALUATING MAPS OF DOMESDAY POPULATION DENSITIES: A case study from the Cambridgeshire fenland [PDF]

open access: yes, 2014
Professor Sir Clifford Darby’s county, regional and national maps of a range of data drawn from the Domesday Book revolutionized scholarship on the social and economic history of late Anglo-Saxon England (e.g. 1935, 1936a, 1936b, 1971, 1977).

core   +1 more source

Medical geography: has J.M. May borrowed M. Sorre's 1933 concept of pathogenic complexes?

open access: yesCybergeo, 2003
The conceptual and methodological framework of modern medical geography began in 1950s with the publication of the paper by J.M. May entitled: « Medical Geography: Its Methods and Objectives », in 1950 in The Geographical Review.
Rais Akhtar
doaj   +1 more source

Facile Fabrication of Antibacterial 3D Fibrous Sponge via In Situ Protonation‐Induced Direct Electrospinning

open access: yesAdvanced Materials Interfaces, EarlyView.
This work introduces a versatile and straightforward approach for directly fabricating electrospun 3D nanofibrous sponge using a selection of solvents, avoiding potentially toxic additives or additional steps. The most important novelty in this study is a one‐step electrospinning process that simultaneously imparts three‐dimensionality and ...
Altangerel Amarjargal   +5 more
wiley   +1 more source

Economic Linkages Across Space [PDF]

open access: yes
We develop a diagrammatic framework that can be used to study the economic linkages between regions or cities. Hitherto, such linkages have not been the primary focus of either the theoretical or empirical literatures.
Anthony J. Venables   +2 more
core  

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