scholarly journals What does the ultrasonic activity recording device measure?

1968 ◽  
Vol 1 (5) ◽  
pp. 180-182 ◽  
Author(s):  
Robert C. Bolles ◽  
George H. Sanders
Keyword(s):  
Recording Device ◽  
Ultrasonic Activity

Evaluation of single-electron movies of glutamine synthetase molecules

1983 ◽  
Vol 41 ◽  
pp. 280-281
Author(s):  
W. Kunath ◽  
E. Zeitler ◽  
M. Kessel
Keyword(s):  
Electron Microscope ◽  
Glutamine Synthetase ◽  
Electron Irradiation ◽  
Structural Damage ◽  
Structural Changes ◽  
Single Electron ◽  
Continuous Series ◽  
Digital Recording ◽  
Recording Device ◽  
Low Exposure

The features of digital recording of a continuous series (movie) of singleelectron TV frames are reported. The technique is used to investigate structural changes in negatively stained glutamine synthetase molecules (GS) during electron irradiation and, as an ultimate goal, to look for the molecules' “undamaged” structure, say, after a 1 e/Å2 dose.The TV frame of fig. la shows an image of 5 glutamine synthetase molecules exposed to 1/150 e/Å2. Every single electron is recorded as a unit signal in a 256 ×256 field. The extremely low exposure of a single TV frame as dictated by the single-electron recording device including the electron microscope requires accumulation of 150 TV frames into one frame (fig. lb) thus achieving a reasonable compromise between the conflicting aspects of exposure time per frame of 3 sec. vs. object drift of less than 1 Å, and exposure per frame of 1 e/Å2 vs. rate of structural damage.

A Rapid Radioisotope Dilution Technique for the Accurate Determination of the Cardiac Output

1968 ◽  
Vol 07 (01) ◽  
pp. 1-7
Author(s):  
Muhammad Razzak ◽  
Robert Botti ◽  
William MacIntyre
Keyword(s):  
Cardiac Output ◽  
Isotope Dilution ◽  
Accurate Determination ◽  
Differential Count ◽  
Stroke Index ◽  
Recording Device ◽  
Dilution Curve ◽  
Index Stroke Volume ◽  
Index Stroke ◽  
Comparison Of The Results

SummaryA pair of printing scalers was used to record the information obtained by external monitoring of the isotope dilution curve following the intravenous injection of radioiodinated human serum albumin. The first scaler gives the differential count rate of the curve at increments of one second, whereas the second integrates continuously the isotope dilution curve. This recording device enabled cardiac output determinations to be calculated rapidly at the bedside without any loss in accuracy.Using this method in 15 normal individuals, the cardiac output was found to be 6.13 ± 0.73 liters/minute (Mean ± 1 S.D.), with a cardiac index of 3.36 ± 0.35 liters/minute/m2. In the same group of normals, the stroke index (stroke volume/surface area) amounted to 50 ± 7.3 ml/beat/m2.Comparison of the results of this method with those obtained by integration of the entire isotope dilution curve by an IBM 1620 computer showed excellent agreement, proving the validity of the suggested technique.

ELECTRET CONDENSER MICROPHONE AS SENSOR IN ARTERIAL PULSE RECORDING DEVICE

2020 ◽  
Vol 19 (72) ◽  
Author(s):  
Erni Yudaningtyas
Keyword(s):  
Recording Device ◽  
Arterial Pulse ◽  
Condenser Microphone

scholarly journals Usefulness of Surgical Media Center as a Cataract Surgery Educational Tool

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Tomoichiro Ogawa ◽  
Takuya Shiba ◽  
Hiroshi Tsuneoka
Keyword(s):  
Cataract Surgery ◽  
Surgical Procedures ◽  
Intraoperative Complications ◽  
Recording Device ◽  
Educational Tool ◽  
Intraoperative Complication ◽  
Vacuum Level ◽  
Media Center ◽  
Medical Optics ◽  
Education Tool

Purpose.This study retrospectively analyzed cataract surgeries to examine the usefulness of Surgical Media Center (SMC) (Abbott Medical Optics Inc.), a new cataract surgery recording device, for training of cataract surgery.Methods.We studied five hundred cataract surgeries conducted with a phacoemulsification system connected to the SMC. After surgery, the surgical procedures were reviewed, with changes in aspiration rate, vacuum level, and phaco power displayed as graphs superimposed on the surgical video. We examined whether use of SMC is able to demonstrate the differences in technique between experienced and trainee operators, to identify inappropriate phacoemulsification techniques from analyzing the graphs, and to elucidate the cause of intraoperative complications.Results. Significant differences in the time taken to reach maximum vacuum and the speed of increase in vacuum during irrigation and aspiration were observed between experienced and trainee operators. Analysis of the graphs displayed by SMC detected inappropriate phacoemulsification techniques mostly in cases operated by trainee operators.Conclusions. Using SMC, it was possible to capture details of cataract surgery objectively. This recording device allows surgeons to review cataract surgery techniques and identify the cause of intraoperative complication and is a useful education tool for cataract surgery.

A Wireless Fully Passive Neural Recording Device for Unobtrusive Neuropotential Monitoring

2016 ◽  
Vol 63 (1) ◽  
pp. 131-137 ◽  
Author(s):  
Asimina Kiourti ◽  
Cedric W. L. Lee ◽  
Junseok Chae ◽  
John L. Volakis
Keyword(s):  
Neural Recording ◽  
Recording Device

A durable chronic unit recording device with movable microelectrode

1975 ◽  
Vol 1 (5-6) ◽  
pp. 399-403 ◽  
Author(s):  
Carlos Fernáandez-Bueno ◽  
Juan M. Lombillo ◽  
James J. Keene
Keyword(s):  
Recording Device ◽  
Unit Recording

The new generation of standard data recording device for intelligent vehicles

2016 ◽  
Author(s):  
Henrique C. Barbosa ◽  
Danilo A. Lima ◽  
Arthur Miranda Neto ◽  
Giovani B. Vitor ◽  
Andrea Martinesco ◽  
...  
Keyword(s):  
Intelligent Vehicles ◽  
Recording Device ◽  
Data Recording ◽  
Standard Data ◽  
New Generation

scholarly journals The Bacterial Nanorecorder: Engineering E. coli to Function as a Chemical Recording Device

PLoS ONE ◽  
2011 ◽  
Vol 6 (11) ◽  
pp. e27559 ◽  
Author(s):  
Prasanna Bhomkar ◽  
Wayne Materi ◽  
David S. Wishart
Keyword(s):  
Recording Device ◽  
E Coli
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