Results 81 to 90 of about 310,485 (285)

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm   +6 more
wiley   +1 more source

A Note on Distance-Based Entropy of Dendrimers

open access: yesAxioms, 2019
This paper introduces a variant of entropy measures based on vertex eccentricity and applies it to all graphs representing the isomers of octane. Taking into account the vertex degree as well (degree-ecc-entropy), we find a good correlation with the ...
Modjtaba Ghorbani   +4 more
doaj   +1 more source

Maximum vertex and face degree of oblique graphs

open access: yesDiscrete Mathematics, 2009
Let G = ( V , E , F ) be a 3-connected simple graph imbedded into a surface S with vertex set V, edge set E and face set F. A face α is an a1, a2, ... , ak-face if α is a k-gon and the degrees of the vertices incident with α in the cyclic order are a1, a2, ... , ak. The lexicographic minimum b1, b2, ... , bk such that α is a b1, b2, ...
Kardoš, František, Miškuf, Jozef
openaire   +3 more sources

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena   +2 more
wiley   +1 more source

On the Number of Spanning Trees of Graphs

open access: yesThe Scientific World Journal, 2014
We establish some bounds for the number of spanning trees of connected graphs in terms of the number of vertices (n), the number of edges (m), maximum vertex degree (Δ1), minimum vertex degree (δ), …first Zagreb index (M1), and Randić index (R-1).
Ş. Burcu Bozkurt, Durmuş Bozkurt
doaj   +1 more source

The vertex connectivity of a {0, 2}-graph equals its degree

open access: yesDiscrete Mathematics, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Brouwer, A.E., Mulder, H.M.
openaire   +4 more sources

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Rank-based attachment leads to power law graphs [PDF]

open access: yes, 2009
We investigate the degree distribution resulting from graph generation models based on rank-based attachment. In rank-based attachment, all vertices are ranked according to a ranking scheme.
Janssen, Jeannette, Pralat, Pawel
core   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

ON THE DISTRIBUTION OF THE SECOND DEGREES OF CONFIGURATION GRAPHS VERTICES

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
The object is configuration graphs with N vertices, numbered from 1 to N, whosevertex degrees are independent identically distributed random variables.
Elena Khvorostyanskaya
doaj   +1 more source

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