Results 31 to 40 of about 56,278 (222)

Granularity as a qualitative concept for GIR [PDF]

open access: yesProceedings of the 9th Workshop on Geographic Information Retrieval, 2015
We examine the notion of granularity for qualitative thinking about geospatial data and location references. Granularity can be understood as an abstraction of level of detail or spatial resolution. Pure coordinates, which may exhibit strong overprecision for some entities, can be combined with not only hierarchical gazetteer information, but also with
openaire   +1 more source

Controlling the Synthesis Conditions for Tuning the Properties of Hydrotalcite-Like Materials at the Nano Scale

open access: yesChemEngineering, 2018
Three series of layered double hydroxides (LDH) with a hydrotalcite-like structure and composition corresponding to [Mg4Al2(OH)12(CO3)]·3H2O have been prepared from a common batch by applying three different aging procedures, namely, stirring at room ...
Raquel Trujillano   +3 more
doaj   +1 more source

Photodegradation of 1,2,4-Trichlorobenzene on Montmorillonite–TiO2 Nanocomposites

open access: yesChemEngineering, 2018
Montmorillonite–TiO2 nanocomposites were prepared using two different methods (ultrasonic or stirring) and using titanium(IV) isopropoxide as precursor.
Beatriz González   +6 more
doaj   +1 more source

Topoclimate and wine quality: results of research on the Gewürztraminer grape variety in South Tyrol, northern Italy

open access: yesOENO One, 2021
The aim of the study was to identify the ecological indicators that facilitate predictive analysis and to search for patterns in local geographical information to identify risks and opportunities in viticulture. The study focused on environmental factors
Carlo Ferretti
doaj   +3 more sources

Charles Gir (illustrateur 1883-1941) : signature

open access: yes, 1920
Charles Gir (illustrateur 1883-1941 ...
Charles Gir (illustrateur 1883-1941), .   +2 more
core   +2 more sources

Conservation Management of the Endangered Asiatic Lions in Gujarat, India, Using GPS Satellite Telemetry

open access: yesAnimals, 2022
Endangered Asiatic lions (Panthera leo persica) are found in the Asiatic Lion Landscape, Gujarat, which includes protected areas and a multi-use land matrix.
Mohan Ram   +5 more
doaj   +1 more source

Judging the Spatial Relevance of Documents for GIR [PDF]

open access: yes, 2006
Geographic Information Retrieval (GIR) is concerned with the retrieval of documents based on both thematic and geographic content. An important issue in GIR, as for all IR, is relevance. In this paper we argue that spatial relevance should be considered independently from thematic relevance, and propose an initial scheme.
Clough, Paul D   +2 more
openaire   +2 more sources

Squaramide-Catalyzed Asymmetric Mannich Reaction between 1,3-Dicarbonyl Compounds and Pyrazolinone Ketimines: A Pathway to Enantioenriched 4-Pyrazolyl- and 4-Isoxazolyl-4-aminopyrazolone Derivatives

open access: yesMolecules, 2022
A series of N-Boc ketimines derived from pyrazolin-5-ones have been used as electrophiles in enantioselective Mannich reactions with different 1,3-dicarbonyl compounds.
Marta Gil-Ordóñez   +4 more
doaj   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

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