Results 31 to 40 of about 103,257,772 (193)

Hydration Behavior of Tricalcium Silicate in Seawater Relevant Salt Systems: A Hybrid Study with the Aid of Machine Learning

open access: yesAdvanced Intelligent Discovery, EarlyView.
The hydration behavior of C3S in seawater‐relevant solutions is studied based on experiments, boundary nucleation and growth (BNG) modeling, and machine learning. The main ions included in seawater modify hydration mechanisms, with MgCl2 showing the strongest acceleration effect at the same concentration.
Yanjie Sun   +6 more
wiley   +1 more source

Relating 2-Rainbow Domination To Roman Domination [PDF]

open access: yes, 2017
For a graph $G$, let $ \gamma_R (G)$ and $ \gamma_{r2} (G) $ denote the Roman domination number of $G$ and the 2-rainbow domination number of $G$, respectively. It is known that $ \gamma_{r2} (G) \le \gamma_R(G) \le 3/2 \gamma_{r2} (G) $.
Rautenbach, Dieter   +2 more
core   +1 more source

Roman Domination in Complementary Prisms [PDF]

open access: yes, 2017
The complementary prism GG of a graph G is formed from the disjoint union of G and its complement G by adding the edges of a perfect matching between the corresponding vertices of G and G. A Roman dominating function on a graph G = (V, E) is a labeling f:
Haynes, Teresa W.   +2 more
core   +3 more sources

Restrained double Roman domination of a graph

open access: yes, 2022
For a graph G = (V, E), a restrained double Roman dominating function is a function f : V → {0, 1, 2, 3} having the property that if f(v) = 0, then the vertex v must have at least two neighbors assigned 2 under f or one neighbor w with f(w) = 3, and if f(
Doost Ali Mojdeh   +2 more
core   +1 more source

Vertex–Edge Roman {2}-Domination

open access: yes
A vertex–edge Roman {2}-dominating function on a graph G=(V,E) is a function f:V⟶{0,1,2} satisfying that, for every edge uv∈E with f(v)=f(u)=0, ∑w∈N(v)∪N(u)f(w)≥2. The weight of the function f is the sum ∑a∈Vf(a).
Saiful Rahman Mondal, Ahlam Almulhim
core   +1 more source

[k]-Roman Domination in Digraphs

open access: yes, 2023
Let D=(V(D),A(D)) be a finite, simple digraph and k a positive integer. A function f:V(D)→{0,1,2,…,k+1} is called a [k]-Roman dominating function (for short, [k]-RDF) if f(AN−[v])≥|AN−(v)|+k for any vertex v∈V(D), where AN&
Ruijuan Li, Xinhong Zhang, Xin Song
core   +1 more source

Gas‐Phase Residence Time Distribution Characteristics in a Gas–Liquid Stirred Tank With Multiple Impellers

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Residence time distribution (RTD) is a standard tool for characterizing the hydrodynamic performance of stirred tanks. In this work, gas‐phase RTD was experimentally investigated in a gas–liquid stirred tank equipped with six multiple‐impeller configurations using four impeller types (WH, HEDT, CBY, and PDT). The effects of impeller speed, gas
Libo Wang   +5 more
wiley   +1 more source

Developmental differences in cortical bone structure in chimpanzee and human femora reflect early locomotor independence in humans

open access: yesThe Anatomical Record, EarlyView.
Abstract The cortical bone structure of long bone diaphyses changes throughout growth via skeletal modeling and has important implications for bone strength and structural integrity. Ontogenetic trends in diaphyseal structure have been identified in both chimpanzees and humans but it is not yet clear how these trends compare given notable differences ...
Karen R. Swan   +3 more
wiley   +1 more source

Body mass and sex estimation from lower carnassial tooth morphometry in the endangered Iberian wolf (Canis lupus signatus): An ecomorphological analysis of sexual size dimorphism

open access: yesThe Anatomical Record, EarlyView.
Abstract The Iberian wolf (Canis lupus signatus) is an endangered subspecies characterized by highly fragmented populations and increasing human–carnivore conflict across the Iberian Peninsula. Although body mass strongly influences predator–prey dynamics and ecological performance, quantitative assessments of sexual size dimorphism (SSD) and body mass
Leonardo Cotts   +4 more
wiley   +1 more source

Decoupled and diverse: A morphological examination of the two‐jaw system in Mormyridae (Osteoglossiformes)

open access: yesThe Anatomical Record, EarlyView.
Abstract The tongue‐bite apparatus (TBA) is a secondary jaw system found in Osteoglossomorpha and, convergently, Salmonidae. It is thought to have similar prey‐processing functions as the pharyngeal jaws, possibly allowing the oral jaws to evolve separately for more efficient prey capture.
Kassandra L. Ford   +2 more
wiley   +1 more source

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