Results 21 to 30 of about 672,012 (266)

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-Hamed et al.
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

Evaluation of Visual Acuity of Ametropia with Visual Event-Related Potential Nogo-P3 Component

open access: yesFayixue Zazhi, 2022
ObjectiveTo analyze the Nogo-P3 component of event-related potential (ERP) in the process of visual acuity processing, to provide electrophysiological evidence for objective evaluation of visual acuity.MethodsTwenty-six subjects with no other ocular ...
JIA Fu-quan   +5 more
doaj   +1 more source

Timing of outdoor light exposure is associated with sleep-wake consolidation in community-dwelling older men

open access: yesFrontiers in Sleep, 2023
IntroductionA consolidated sleep-wake pattern is essential for maintaining healthy cognition in older individuals, but many suffer from sleep fragmentation that exacerbates age-related cognitive decline and worsens overall mental and physical health ...
Renske Lok   +7 more
doaj   +1 more source

Pengaruh Variasi Agregat Kasar Penyusun Beton Terhadap Kerapatan Beton Dengan Menggunakan Transmission Time Pada Alat UPV (Ultrasonic Pulse Velocity)

open access: yesRekayasa Sipil, 2019
To find out the quality of concrete, we need to test the concrete. Which is non destructive test or testing without damaging the test object, namely with an UPV (Ultrasonic Pulse Velocity). In this study using 4 variations of coarse aggregate composition
Fatma Dora Indriani   +2 more
doaj   +1 more source

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