Buscador de Tesis y publicaciones académicas

Numerical solutions of an accurate diffuse interface model of the incompressible resistive MHD free surface flow

Li, Maojun · Wang, Jiancheng · Xia, Zeyu · Xu, Liwei

In this paper, we derive a new model to simulate the incompressible resistive magnetohydrodynamic (MHD) free surface flow. A thermodynamically consistent diffuse interface method is adopted to characterize the moving interface in the modeling process. The formal convergence of the proposed MHD free surface flow model t...

Real matrices as linear combinations of three orthogonal matrices

Pang, Zhekai

Li and Poon proved that every real square matrix is a real linear combination of four real orthogonal matrices. The resulting question, recorded by Zhan, asks whether four terms are necessary. We prove that three real orthogonal matrices always suffice.

Fine insight of early germinated cavities of high temperature hydrogen attack related to low carbon steels microstructure

Peter CLOETENS · Lucile MAGNIER · Camille FLAMENT · Nicolas CHEVREUX · y 1 más

The High Temperature Hydrogen Attack (HTHA) phenomenon affects low-carbon ferrito-pearlitic steels submitted to hydrogen at temperatures above 200°C. Those steels are used to manufacture pressure vessels or piping, and is likely to occur in the development of promising technologies close to the carbon neutrality such a...

Optical behavior and translucency parameter of additively manufactured 3Y-TZP zirconia: influence of thickness and build orientation

Beatriz Anitua · Maria Tejada-Casado · Guillermo Pradíes · María M. Pérez · y 1 más

To evaluate the influence of thickness and build orientation on the optical properties and relative translucency of an additively manufactured 3Y-TZP zirconia system and to compare its optical behavior with that of a subtractively manufactured 3Y-TZP zirconia system.Zirconia discs were fabricated at five thicknesses (0...

In-situ Powder X-ray Diffraction of Zeolitic Imidazolate Frameworks under Mechanical Impact Induced Water Intrusion

Mikhail KOZHAEV · Hebin JIANG · Jasper THREADINGHAM · Yueting SUN · y 3 más

The pressurised intrusion of non-wetting liquid in nanoporous materials has emerged as a promising mechanism to yield high-performance energy absorption and impact protection. Herein we propose to use in-situ powder X-ray diffraction (PXRD) at beamline ID09 to study Zeolitic Imidazolate Frameworks (ZIFs) under high-rat...

Efficient partially replicated block designs with each replication number one or two

Bailey, R. A. · Mukerjee, Rahul

We investigate block designs, under the A- and MV-criteria, when each treatment can have only one or two replications due to resource constraints, as can happen, for example, in early generation varietal trials. While these are commonly known as partially replicated designs, a key new feature of the present work is tha...

Do K3,3-free Latin squares exist?

Krotov, Aleksandr D. · Krotov, Denis S.

We discuss the problem of the existence of latin squares without a substructure consisting of six elements $(r_1,c_2,l_3)$, $(r_2,c_3,l_1)$, $(r_3,c_1,l_2)$, $(r_2,c_1,l_3)$, $(r_3,c_2,l_1)$, $(r_1,c_3,l_2)$. Equivalently, the corresponding latin square graph does not have an induced subgraph isomorphic to $K_{3,3}$. T...

Fundamental Investigations of Polymer Mechanochemistry in Sonicated Solutions

Anderson, Luke

Wastewater-derived gut microbiome: global patterns and associations with population health

Huizi Yang · M. Mozammel Hoque · Jiawei Zhao · Hamed Attaran Dovom · y 2 más

Urban wastewater systems aggregate gut microbiome signals from large populations, enabling exploration of their associations with population-level health patterns. However, it remains unclear whether wastewater-derived gut microbiome (WGM) simply represents a composite of individual gut microbes or whether it forms str...

Coupling synchrotron time-resolved and nanotomography to investigate the multiscale structure and strain gradients of the enthesis tissue

Alberto SENSINI · Gianluca TOZZI · Pierpaolo FUCILE · Bratislav LUKIC · y 1 más

Enthesis injuries (tendon-to-bone insertion) constitute one of the major sources of tendon injuries worldwide. The multiscale morphological/mechanical behaviour of the enthesis is complex and driven by a combination of biological, morphological, and mechanical factors that differentiate from the micro- down to the nano...