Results 31 to 40 of about 1,807,535 (329)

Pre-excitation or post-excitation [PDF]

open access: yesHeart, 2000
Editor,—We read with great interest the case study by Lau et al entitled “A new ECG sign of an accessory pathway in sinus rhythm: pseudo partial right bundle branch block”.1 However, ventricular pre-excitation can change any part of QRS; the sole …
János Tomcsányi, József Tenczer
openaire   +2 more sources

Isospin structure of one- and two-phonon GDR excitations [PDF]

open access: yes, 1998
Isospin is included in the description of Coulomb excitation of multiple giant isovector dipole resonances. In the excitation of even-even nuclei, a relevant portion of the excitation strength is shown to be associated with 1+ two-phonon states, which ...
A. F. R. de Toledo Piza   +30 more
core   +2 more sources

Roundabout relaxation: collective excitation requires a detour to equilibrium [PDF]

open access: yes, 2004
Relaxation to equilibrium after strong and collective excitation is studied, by using a Hamiltonian dynamical system of one dimensional XY model. After an excitation of a domain of $K$ elements, the excitation is concentrated to fewer elements, which are
D. Escande   +8 more
core   +1 more source

Chirp excitation [PDF]

open access: yesJournal of Magnetic Resonance, 2017
The paper describes the design of broadband chirp excitation pulses in NMR. We first develop a three stage model for understanding chirp excitation in NMR. We then show how a chirp $ $ pulse can be used to refocus the phase of the chirp excitation pulse. The resulting magnetization still has some phase dispersion in it.
openaire   +3 more sources

A comparison study of steady-state vibrations with single fractional-order and distributed-order derivatives

open access: yesOpen Physics, 2017
We conduct a detailed study and comparison for the one-degree-of-freedom steady-state vibrations under harmonic driving with a single fractional-order derivative and a distributed-order derivative.
Duan Jun-Sheng   +2 more
doaj   +1 more source

Contribution to research of thermal loads in commercial vehicles powertrain mounts / Приложение к исследованию тепловой нагрузкиопоры силового привода грузового автомобиля / Prilog istraživanju toplotnih opterećenja oslonaca pogonske grupe teretnog motornog vozila [PDF]

open access: yesVojnotehnički Glasnik, 2017
Due to the effects of excitations of road micro-roughness and the powertrain as well as due to the conditions of movement (acceleration, braking, curvilinear movement), the weights of commercial vehicles perform complex spatial oscillations. The negative
Miroslav D. Demić , Jasna D. Glišović
doaj   +1 more source

Deletion of ErbB4 Disrupts Synaptic Transmission and Long-Term Potentiation of Thalamic Input to Amygdalar Medial Paracapsular Intercalated Cells

open access: yesFrontiers in Synaptic Neuroscience, 2021
Identification of candidate risk genes and alteration in the expression of proteins involved in regulating inhibitory neuron function in various psychiatric disorders, support the notion that GABAergic neuron dysfunction plays an important role in ...
Douglas Asede   +4 more
doaj   +1 more source

Harmonic chirp imaging method for ultrasound contrast agent [PDF]

open access: yes, 2005
Coded excitation is currently used in medical ultrasound to increase signal-to-noise ratio (SNR) and penetration depth. We propose a chirp excitation method\ud for contrast agents using the second harmonic component of the response.
Associate Member   +5 more
core   +5 more sources

THE EXCITEMENT OF DISCOVERY [PDF]

open access: yesAnnual Review of Biochemistry, 2004
I had the good luck to start research at the dawn of molecular biology when it was possible to ask fundamental questions about the nature of the nucleic acids and how information is transferred in living systems. The search for answers led me into many different areas, often with the question of how molecular structure leads to biological function ...
openaire   +2 more sources

Balanced Noise-Evoked Excitation and Inhibition in Awake Mice CA3

open access: yesFrontiers in Physiology, 2017
The hippocampus is known as a neuronal structure involved in learning, memory and spatial navigation using multi-sensory cues. However, the basic features of its response to acoustic stimuli without any behavioral tasks (conditioning) remains poorly ...
Ningqian Wang   +3 more
doaj   +1 more source

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