Results 21 to 30 of about 24,457 (245)

Atomic scale spin‐dependent STM on magnetite using antiferromagnetic STM tips [PDF]

open access: yesMicroscopy Research and Technique, 2005
AbstractSTM tips made from antiferromagnetic MnNi have been used to investigate the atomic structure of the (001) and (111) surfaces of Fe3O4. The clean (001) surface displays a (√2 × √2)R45° superlattice, which is attributed to charge‐ordering on the surface, where Fe2+‐Fe2+ and Fe3+‐Fe3+ dimers can be discriminated.
S, Murphy   +6 more
openaire   +4 more sources

stm: An R Package for Structural Topic Models

open access: yesJournal of Statistical Software, 2019
This paper demonstrates how to use the R package stm for structural topic modeling. The structural topic model allows researchers to flexibly estimate a topic model that includes document-level metadata.
Margaret E. Roberts   +2 more
doaj   +1 more source

Submesoscale Dynamics in the Gulf of Aden and the Gulf of Oman

open access: yesFluids, 2020
We have investigated the surface and subsurface submesoscale dynamics in the Gulf of Aden and the Gulf of Oman. Our results are based on the analyses of regional numerical simulations performed with a primitive equation model (HYCOM) at submesoscale ...
Mathieu Morvan   +3 more
doaj   +1 more source

Antimony deposition onto Au(111) and insertion of Mg

open access: yesBeilstein Journal of Nanotechnology, 2019
Magnesium-based secondary batteries have been regarded as a viable alternative to the immensely popular Li-ion systems owing to their high volumetric capacity.
Lingxing Zan   +3 more
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

The Sublimated Ideology of The Object [PDF]

open access: yesMeta: Research in Hermeneutics, Phenomenology and Practical Philosophy, 2013
The idea that ideologies present to us a rationality for making decisions, for getting things done, allows us to avoid the agony of choosing one world or another as a finite being, allows us to forget that it is we ourselves who must do and thus who are ...
G.V. Loewen
doaj  

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

open access: yesAdvanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu   +9 more
wiley   +1 more source

Strut-and-tie model and its applications in reinforced concrete deep beams: A comprehensive review

open access: yesCase Studies in Construction Materials, 2023
Strut-and-tie model (STM), with its truss analogy, is yet a powerful tool for analyzing and designing complex prestressed and reinforced concrete structures.
Imad Shakir Abbood
doaj   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

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