Results 81 to 90 of about 37,103 (224)

Nano‐Raman Spectroscopy of Tellurium Nanowires

Journal of Raman Spectroscopy, EarlyView.
Nano‐Raman evidences a diameter dependence of the peak position, among different tellurium nanowires and along the single species. ABSTRACT Tellurium‐based nanowires are interesting structures for applications in low‐dimensional electronics. This work investigates the vibrational dynamics of trigonal tellurium (t‐Te) nanowires through tip‐enhanced ...
Diego Sier, Rafael Nadas, André G. Pereira, Gabriel Tomaz Massardi, Erika Peixoto Pimenta, Sukarno Olavo Ferreira, Eduardo Nery Duarte Araujo, Ado Jorio   +7 more
wiley   +1 more source

ANATOMICAL STUDY OF SACRAL HIATUS FOR CAUDAL EPIDURAL BLOCK

National Journal of Medical Research, 2012
Introduction: Anatomy of the sacral hiatus is having clinical importance during caudal epidural block. Present study is aimed at determining anatomy of sacrum specially sacral hiatus for caudal epidural block, with the help of morphometric measurements ...
Dhananjay S Patil, Hrishikesh R Jadav, Binodkumar, Mehta C D, Vipul D Patel   +4 more
doaj  

$n^2 + 1$ unit equilateral triangles cannot cover an equilateral triangle of side $> n$ if all triangles have parallel sides

, 2023
Conway and Soifer showed that an equilateral triangle $T$ of side $n + \varepsilon$ with sufficiently small $\varepsilon > 0$ can be covered by $n^2 + 2$ unit equilateral triangles. They conjectured that it is impossible to cover $T$ with $n^2 + 1$ unit equilateral triangles no matter how small $\varepsilon$ is. We show that if we require all sides
Baek, Jineon, Lee, Seewoo
openaire   +2 more sources

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

Laser &Photonics Reviews, EarlyView.
The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen, Wenhao Wang, Yi Ji Tan, Zhonglei Shen, Ridong Jia, Ranjan Singh   +5 more
wiley   +1 more source

CONTROL OF THE AIRCRAFT FLIGHT VELOCITY VECTOR BASED ON THE ENERGY APPROACH

Научный вестник МГТУ ГА, 2016
This paper presents a method of the aircraft flight velocity vector control synthesis taking into account constraints on the thrust of the power plant, the restriction is made on the basis of the use of the power triangle, representing an equilateral ...
V. P. Kharkov, S. P. Khalyutin
doaj  

Perfectly Packing an Equilateral Triangle by Equilateral Triangles of Sidelengths $$n^{-1/2-\epsilon }$$

Discrete & Computational Geometry
Abstract Equilateral triangles of sidelengths 1, $$2^{-t}$$ 2 - t , $$3^{-t}
Janusz Januszewski, Łukasz Zielonka
openaire   +1 more source

Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces

Laser &Photonics Reviews, EarlyView.
Gold nanoparticles placed above a deformed honeycomb plasmonic crystal couple to a chiral topological interface mode. The pseudospin‐split bands ψ+/ ψ− encode spin‐momentum locking, so emitters radiate directionally along the domain wall and share a common phase.
Fatemeh Davoodi
wiley   +1 more source

Quantum Spectra of Triangular Billiards on the Sphere

, 2000
We study the quantal energy spectrum of triangular billiards on a spherical surface. Group theory yields analytical results for tiling billiards while the generic case is treated numerically.
Berry M V, Berry M V, Berry M V, Berry M V, Bogomolny E B, Bohigas O, Gutkin E, Itzykson C, Koster J F, M E Spina, M Saraceno, Pinsky M, Schmit C, Spina M E   +13 more
core   +1 more source

THE FOUR EQUILATERAL TRIANGLES CONNECTED WITH AN ARBITRARY TRIANGLE

Demonstratio Mathematica, 1984
A well-known theorem of Morley states that the three adjacent trisectors of the angles of any triangle form an equilateral triangle. The present paper generalizes Morley's theorem to some combinations of internal and external trisectors of angles of any given triangle: the adjacent trisectors of one internal and two external angles of any given ...
openaire   +2 more sources

Reinstatement and generic reassignment of Phyllanthus asteranthos Croizat (Phyllanthaceae) based on living plant observations and specimen analysis

Nordic Journal of Botany, EarlyView.
Phyllanthus asteranthos Croizat has been treated as a synonym of P. pulcher Wall. ex Müll. Arg. (syn. Nymphanthus glaucescens (Miq.) R.W.Bouman) since 1987. Through detailed morphological observations of living plants and critical examinations of type materials and additional specimens, this study revealed that the two taxa are morphologically very ...
Feng Yang, Li‐Ju Jiang, Huan‐Chong Wang   +2 more
wiley   +1 more source