Results 191 to 200 of about 138,464 (231)

Assessing Mental Health and Emotional States by Using Smartphone Photoplethysmography-Based Digital Pulse Waveform Analysis: Cross-Sectional Observational Study. [PDF]

JMIR Mhealth Uhealth
Liu I, Hu L, Luo J, Liu C, Zhong Q, Ni S.   +5 more
europepmc   +1 more source

On the sectional curvatures of R-spaces

, 1974
openaire   +3 more sources

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Case Report: Acute keratoconus as the presenting feature in undiagnosed Norrie disease: hypothesis from a novel NDP mutation. [PDF]

Front Med (Lausanne)
Cao X, Kuang L, Lv J, Mei S, Su J, Wang Y, Zhan Q, Guo P.   +7 more
europepmc   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

Cutoff Values of Noncycloplegic Spherical Equivalent Refraction for Myopia Detection in Southwestern Chinese Children. [PDF]

J Ophthalmol
Zhang C, Zhao XQ, Yan Y, Wang J.
europepmc   +1 more source

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

Advanced 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, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Rotational 3D printing of active-passive filaments and lattices with programmable shape morphing. [PDF]

Proc Natl Acad Sci U S A
Abdelrahman MK, Wilt JK, Jung Y, Telles R, Paink GK, Larson NM, Aizenberg J, Mahadevan L, Lewis JA.   +8 more
europepmc   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

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Sectional curvature and the energy–momentum tensor

Classical and Quantum Gravity, 2005
\textit{J.~Ehlers and W.~Kundt} [Gravitation: An Introduction to Current Research, ed. L.~Witten, New York: Wiley, 1962, p. 49] showed that if \(M\) is a spacetime and \(p\in M\), the statement that the Einstein space condition holds at \(p\) is equivalent to the statement that the sectional curvatures of each of any orthogonal pair of non-null 2 ...
Hall, G. S., MacNay, Lucy
openaire   +2 more sources