The various durations were tested randomly, and the minimum peak voltage and energy resulting in defibrillation was determined for each. Shorter pulse durations were associated with lower energies with pulses of 2.5—15 msec having significantly lower energy thresholds than shocks of 20 msec (P < ...
SummaryExperiments have been made on concretes with varying aggregate/cement and water/cement ratios, with the main object of ascertaining the effects of changes in age and water/cement ratio upon the relation between ultrasonic pulse ve... Kaplan,F M. - 《Magazine of Concrete Research》 被引量...
Stability of aluminum-alloy struts in compression in the elastoplastic range M. Kh. Mullagulov R. R. Mavlyutov Scientific-Technical Section Pages: 1758 - 1765 Evaluation of maximum stresses in thick-walled spherical shell designs subjected to a short pulse loading V. A. Mal'tsev G...
12 studied the use of artificial neural networks to accurately predict the compressive strength of concrete containing nano-silica particles and copper slag. Ashrafian et al.13 used a heuristic regression method to predict the strength and ultrasonic pulse velocity of fiber-reinforced concrete. 3D ...
In order to investigate the applicability of laser micro welding to the fabrication of medical devices, Ti-Ni shape memory alloy wires with pseudo-elasticity were micro spot melted by using YAG laser. By changing the melting parameters, such as laser power or pulse duration, the evolution in mi...
EFFECTS OF HIGH TEMPERATURE ON RESIDUAL, MECHANICAL, AND TRANSPORT PROPERTIES OF CONCRETE This paper presents an extensive analysis of the physical and mechanical properties of normal and high-strength concretes exposed to temperatures up to 700 deg C. Ultrasonic pulse velocity, static and dynamic modu...
Validation and clinical application studies. Pulse wave velocity is widely used as an index of arterial distensibility. The aim of this study was to evaluate the accuracy of a new automatic device to ... R Asmar - 《Hypertension》 被引量: 2789发表: 1996年 加载更多...
The homogeneity of CPB specimens was evaluated by ultrasonic pulse velocity (UPV). The stress-strain behavior and AE characteristic of CPB specimens under different Talbot indices and confining pressures were investigated. The effects of the particle size distribution and the confining pressure on the...
The momentum trap technique is utilized to ensure single pulse loading for postmortem examination. Tests without and with pulse shaping are conducted on rock specimens. The evolution of tensile stress at the failure spot is determined via dynamic and quasistatic finite element analyses with the ...
However, there has been little application yet of this electrical fusion method to the fusion of protoplasts of mushrooms. In this report, we describe the pearl chain formation and effect of pulse field strength on protoplast breakdown of protoplasts prepared from Hericium erinaceum. The protoplasts ...