نتایج جستجو برای: laser velocimeter

تعداد نتایج: 183811  

دهقان, هاجر, همتی, سمانه,

Background and purpose: Prevention of dental caries is one of the primary goals in dentistry. Application of fluoride decreased dental demineralization but the preventive ability of this fluoride is limited. Nowadays different investigations into dental erosion focused on the preventive effect of laser irradiation. The purpose of this applied study was to assess the effect of diode laser (&lamb...

Journal: :The Journal of the Acoustical Society of America 1957

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 2003

F. Almabouada K. E. Aiadi

This paper deals with the experimental results of a xenon flash-lamp pumped passively Q-switched Nd:YAG laser using Cr4+:YAG saturable absorber. The need of a laser cavity to be integrated into a time-of-flight laser range finder is of great interest as an experimental investigation of several laser resonators. Two types of laser resonator, with different lengths, have been studied: the flat-fl...

A Majdabadi

Nowadays laser is extensively used in various industrial, communicative, medical, and other fields. Using laser in medicine has enabled physicians to perform the most accurate and finest operations within few minutes. Non-observance of safety points during laser performance could be seriously harmful for the medical staff and the patient. Therefore, in order to prevent the possible damage of th...

1997
Jimmy W. Usry James F. Meyers

A new measurement technique is being developed by NASA to measure off-surface flow fields. This method, Doppler global velocimetry, will allow quantification of complex three-dimensional flow fields at video camera rates. The entire flow field structure within a selected plane is measured simultaneously rather than by scanned, point-by-point measurements using conventional laser velocimetry. Da...

Journal: :Journal of physics 2023

Abstract In order to provide design parameters for the micro-initiation train of built-in MEMS Safety and Arming Device, solve reliable transmission problem due small charge amount. Based on structure micro initiating explosive sequence, test device is designed in paper. The photon Doppler Velocimeter (PDV) was used velocity flyer driven by micro-detonator, influence flyer, acceleration chamber...

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