Results 21 to 30 of about 1,056,129 (315)

DYNAMIC AND MATHEMATICAL MODELS OF THE HYDROIMPULSIVE VIBRO-CUTTING DEVICE WITH A PRESSURE PULSE GENERATOR BULT INTO THE RING SPRING

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
Structural calculation scheme of the hydropulse device for vibration cutting with built-in ring with pressure pulse generator (PPG) is considered. On the basis of the structural scheme and cyclogram of the working cycle of the device, its dynamic and ...
Roman Obertyukh   +5 more
doaj   +1 more source

Faster amplitude estimation [PDF]

open access: yesQuantum Information and Computation, 2020
In this paper, we introduce an efficient algorithm for the quantum amplitude estimation task which is tailored for near-term quantum computers. The quantum amplitude estimation is an important problem which has various applications in fields such as quantum chemistry, machine learning, and finance.
openaire   +2 more sources

The Variation of the Linewidths and Amplitudes of Sub-Doppler Resonances of 87Rb D2 Line with Laser Beam Intensity

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
The sub-Doppler resonances linewidths and amplitudes depend on the laser beam intensity. The effect of laser beam intensity on the resonance linewidths and amplitudes obtained from different energy transitions of atoms varies from resonance to resonance.
Ersoy Şahin
doaj   +1 more source

Twistors and amplitudes [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
A brief review is given of why twistor geometry has taken a central place in the theory of scattering amplitudes for fundamental particles. The emphasis is on the twistor diagram formalism as originally proposed by Penrose, the development of which has now led to the definition by Arkani-Hamedet al.of the ‘amplituhedron’.
openaire   +3 more sources

Tropical Amplitudes [PDF]

open access: yesAnnales Henri Poincaré, 2017
In this work, we argue that the α′→0 limit of closed string theory scattering amplitudes is a tropical limit. The motivation is to develop a technology to systematize the extraction of Feynman graphs from string theory amplitudes at higher genus.
openaire   +2 more sources

Vascular response to the microcirculation in the fingertip by local vibration with varied amplitude

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Objectives: We investigated the effect of local vibration intensity on the vascular response to the microcirculation of the finger.Materials and methods: We performed hand-transmitted vibration experiments combined with laser Doppler flowmetry (LDF) to ...
Lizhong Mu   +10 more
doaj   +1 more source

Improvement of upper limb’s condition of women with post mastectomy syndrome with the help of problem-oriented program of physical rehabilitation

open access: yesPedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2015
Purpose: to determine effectiveness of problem-oriented program of women’s physical rehabilitation with post mastectomy syndrome in improvement of upper limb’s functional state.
Y.A. Briskin, T.Y. Odinets
doaj   +1 more source

Optical Analysis of the Impact Transmission in Steel Sheet Arrays with Bolted-Type Joints

open access: yesApplied Sciences, 2023
This research leads with the analysis of a structural joint. Different arrays of steel sheets were joined using bolts. The structures were built in a metallic box filled with Granitic 0/3 sand.
Víctor Martínez-Calzada   +3 more
doaj   +1 more source

AMBIENT SEISMIC NOISE FOOTPRINTS AND SPECTRA IN THE MIDDLE BENUE TROUGH, NIGERIA

open access: yesEarth Science Malaysia, 2019
Ambient noise was analysed from a two-dimensional (2D) seismic data acquired in the Middle Benue Trough, Nigeria for the purpose of characterizing the ambient seismic noise.
Clifford N. C. Mbachi   +5 more
doaj   +1 more source

Impact of Arm Length and Body Mass Index on Abductor Pollicis Brevis (APB) H-Reflex among Females [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2019
Introduction: Hoffmann reflex (H-reflex) is an electrically induced reflex analogous to the mechanically induced spinal stretch reflex. H-reflex is useful clinically to diagnose nerve root lesions, particularly involving S1 radiculopathy and in proximal ...
D Rekha, B Suganthi
doaj   +1 more source

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