Results 61 to 70 of about 4,521,757 (338)

Structure and Tensile Strength of Pure Cu after High Pressure Torsion Extrusion

Metals, 2019
The microstructure and mechanical properties of rod-shaped samples (measuring 11.8 mm in diameter and 35 mm in length) of commercially pure (CP) copper were characterized after they were processed by high pressure torsion extrusion (HPTE).
Dayan Nugmanov, Andrey Mazilkin, Horst Hahn, Yulia Ivanisenko   +3 more
doaj   +1 more source

Time-Dependent Symmetries of Variable-Coefficient Evolution Equations and Graded Lie Algebras

, 1997
Polynomial-in-time dependent symmetries are analysed for polynomial-in-time dependent evolution equations. Graded Lie algebras, especially Virasoro algebras, are used to construct nonlinear variable-coefficient evolution equations, both in 1+1 dimensions
Bullough R K, Bullough R K, Caudrey P J, Chen H H, Cheng Y, Fokas A S, Fuchssteiner B, Fushchich (Fushchych) W I, Kac V G, Ma W X, Ma W X, Ma W X, Ma W X, Oevel W, Oevel W, Olver P J, P J Caudrey, R K Bullough, Tu G Z, W I Fushchych, W X Ma   +20 more
core   +1 more source

Localized induction equation and pseudospherical surfaces

, 1994
We describe a close connection between the localized induction equation hierarchy of integrable evolution equations on space curves, and surfaces of constant negative Gauss curvature.Comment: 21 pages, AMSTeX file.
Batchelor G K, Burstall F, Bäcklund A, Chern S S, Dobriner H, Enneper A, Fukumoto, Hasimoto H, Hasimoto H, Itzykson C, Kida S, Lamb G L, Lamb G L Jr, Langer J, Langer J, Langer J, Langer J, Langer J, Marsden J, McLachlan R, Melko M, Moore D, Novikov S, Perring J K, R Perline, Ricca R, Seeger A, Spivak M, Struik D, Sym A, Uhlenbeck K   +30 more
core   +1 more source

Lattice and q-difference Darboux-Zakharov-Manakov systems via $\bar{\partial}$-dressing method

, 1995
A general scheme is proposed for introduction of lattice and q-difference variables to integrable hierarchies in frame of $\bar{\partial}$-dressing method .
B G Konopelchenko, Bianchi L, Bogdanov L V, Bogdanov L V, Bogdanov L V, Carroll R, Darboux G, Dryuma V S, Dryuma V S, Dubrovin B, Dubrovin B, Dubrovin B A, Eisenhart L P, Forsyth A R, Konopelchenko B G, Konopelchenko B G, L V Bogdanov, Nijhoff F, Schief W K, Tsarev S P, Tsarev S P, Zakharov V E, Zakharov V E, Zakharov V E   +23 more
core   +1 more source

Elasticity of Diametrically Compressed Microfabricated Woodpile Lattices

Advanced Engineering Materials, EarlyView.
Modulus–porosity relationship is derived for woodpile lattices with struts under diametrical compression. The formula presented here that Young's modulus is proportional to the square of the volume fraction E˜ρ2$E \sim \left(\rho\right)^{2}$ is shown to be consistent with computations and laboratory experiments on 3D‐printed samples.
Faezeh Shalchy, Atul Bhaskar
wiley   +1 more source

Characterization of toric varieties via int-amplified endomorphisms [PDF]

arXiv, 2020
In this paper, we obtain a characterization of toric varieties via int-amplified endomorphisms. We prove that if $f \colon X \to X$ is an int-amplified endomorphism of a smooth complex projective variety $X$, then $X$ is toric if and only if $f_*L$ is a direct sum of line bundles on $X$ for every line bundle $L$.
arxiv  

On the new approach to variable separation in the time-dependent Schr\"odinger equation with two space dimensions

, 1995
We suggest an effective approach to separation of variables in the Schr\"odinger equation with two space variables. Using it we classify inequivalent potentials $V(x_1,x_2)$ such that the corresponding Schr\" odinger equations admit separation of ...
Boyer C., Fushchych W. I., I. V. Revenko, Niederer U., Nikitin A. G., R. Z. Zhdanov, Shapovalov V. N., W. I. Fushchych   +7 more
core   +1 more source

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

Advanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee, Mahdi Askari‐sedeh, Ali Zolfagharian, Mostafa Baghani   +3 more
wiley   +1 more source

Effectiveness of iNTS vaccination in Sub-Saharan Africa [PDF]

arXiv, 2023
Invasive non-Typhoidal Salmonella (iNTS) is one of the leading causes of blood stream infections in Sub-Saharan Africa, especially among children. iNTS can be difficult to diagnose, particularly in areas where malaria is endemic and difficult to treat, partly because of the emergence of antibiotic resistance.
arxiv  

Lagrangian Description, Symplectic Structure, and Invariants of 3D Fluid Flow

, 1997
Three dimensional unsteady flow of fluids in the Lagrangian description is considered as an autonomous dynamical system in four dimensions. The condition for the existence of a symplectic structure on the extended space is the frozen field equations of ...
Arnold, Frisch, Ginzburg, Gümral, Hasan Gümral, Hegna, Kozlov, Kuz'min, Kuznetsov, Marsden, Marsden, Misner, Olver, Robert, Roulstone, Sagdeev, Salmon   +16 more
core   +1 more source