Results 1 to 10 of about 3,900,707 (268)

Repulsive surfaces [PDF]

open access: yesACM Transactions on Graphics, 2021
Functionals that penalize bending or stretching of a surface play a key role in geometric and scientific computing, but to date have ignored a very basic requirement: in many situations, surfaces must not pass through themselves or each other.
Chris Yu 0001   +3 more
openaire   +3 more sources

COMPARATIVE EFFICIENCY OF THE INNOVATIVE "TUMAN" UNITS (A SPRAYER AND A MULTI-INJECTOR) OF OOO "PEGAS-AGRO" (LLC) WHEN APPLYING LIQUID UREA-AMMONIUM NITRATE FERTILIZERS [PDF]

open access: yesVolga Region Farmland, 2022
Due to the increasing demand for liquid fertilizers caused by their better characteristics, especially for arid conditions and in connection with the predicted global warming, agrarian universities of Russia conduct scientific and production researches ...
V.А. Milyutkin, О.N. Kukharev
doaj   +1 more source

Analysis of nanoparticles and nanomaterials using X-ray photoelectron spectroscopy

open access: yesТонкие химические технологии, 2023
Objectives. The main aim of this review is to summarize the existing knowledge on the use of X-ray photoelectron spectroscopy (XPS) for the characterization of nanoparticles and nanomaterials.Results.
A. A. Ischenko   +5 more
doaj   +1 more source

Surface-to-surface intersections [PDF]

open access: yesIEEE Computer Graphics and Applications, 1993
Techniques for computing intersections of algebraic surfaces with piecewise rational polynomial parametric surface patches and intersections of two piecewise rational polynomial parametric surface patches are discussed. The techniques are classified using four categories-lattice evolution methods, marching methods, subdivision methods, and analytic ...
openaire   +1 more source

On surfaces that are intrinsically surfaces of revolution [PDF]

open access: yesJournal of Geometry, 2017
23 pages, 10 ...
Freese, Daniel, Weber, Matthias
openaire   +2 more sources

Morphological diversity of the leaves and occurrence forecast of similar forms in natural hazel plantings

open access: yesНовые технологии, 2019
The morphological diversity of quantitative (length, width) and qualitative features (shape, degree of dissection, tip and base shape, surface character, color) of common hazel leaves growing in natural conditions of the North-West Caucasus at the ...
S. G. Biganova   +3 more
doaj   +1 more source

On surfaces and Heegaard surfaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1991
Summary: This paper is concerned with the intersection of surfaces and Heegaard surfaces in closed orientable 3-manifolds \(M\). Given a Heegaard decomposition \((M, V_ 1, V_ 2)\) it will be shown that any surface (orientable or not) in \(M\) is equivalent to a surface which intersects \(V_ 1\) in discs whose total number is limited from above by some ...
openaire   +1 more source

CSIDH on the Surface [PDF]

open access: yes, 2020
For primes \(p \equiv 3 \bmod 4\), we show that setting up CSIDH on the surface, i.e., using supersingular elliptic curves with endomorphism ring \(\mathbf {Z}[(1 + \sqrt{-p})/2]\), amounts to just a few sign switches in the underlying arithmetic. If \(p \equiv 7 \bmod 8\) then horizontal 2-isogenies can be used to help compute the class group action ...
Castryck, Wouter, Decru, Thomas
openaire   +2 more sources

Interpretation of aeromagnetic and remote sensing data of Auchi and Idah sheets of the Benin-arm Anambra basin: Implication of mineral resources

open access: yesOpen Geosciences, 2023
The need for mineral resources for economic development is key in both developing and developed countries. However, miners usually resort to random excavation of mineral deposits without proper investigation to identify structures of interest in target ...
Oni Olubukola A.   +3 more
doaj   +1 more source

High Sensitivity Integrated Visible to Mid-Infrared Nonlinear Plasmonic Sensor

open access: yesIEEE Photonics Journal, 2017
We propose a Kretschmann-based nonlinear plasmonic sensor with a gold thin film deposited on a glass prism. Visible and mid-infrared signals are generated in this configuration through the nonlinear processes of sum- and difference-frequency generation ...
F. Che   +3 more
doaj   +1 more source

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