scholarly journals A New Method of Measuring Displacement by means of Variations of Sound Frequency and the Length of Air Column in a Small Pipe (A Resonant Method using Speaker and Electric Feedback Loop).

1992 ◽  
Vol 35 (1) ◽  
pp. 9-13
Author(s):  
Shuichi SAKAMOTO ◽  
Ryoichi ICHIMIYA ◽  
Yuji SUZUKI
Keyword(s):  
Feedback Loop ◽  
Sound Frequency ◽  
New Method ◽  
Air Column ◽  
Resonant Method

scholarly journals A New Method of Comparing Forcing Agents in Climate Models*

2015 ◽  
Vol 28 (20) ◽  
pp. 8203-8218 ◽  
Author(s):  
Ben Kravitz ◽  
Douglas G. MacMartin ◽  
Philip J. Rasch ◽  
Andrew J. Jarvis
Keyword(s):  
Solar Irradiance ◽  
Feedback Loop ◽  
Climate Models ◽  
Climate Model ◽  
Co2 Concentration ◽  
Total Solar Irradiance ◽  
New Method ◽  
Convergence Time ◽  
Radiative Forcings ◽  
Global Mean

Abstract The authors describe a new method of comparing different climate forcing agents (e.g., CO2 concentration, CH4 concentration, and total solar irradiance) in climate models that circumvents many of the difficulties associated with explicit calculations of efficacy. This is achieved by introducing an explicit feedback loop external to a climate model that adjusts one forcing agent to balance another while keeping global-mean surface temperature constant. The convergence time of this feedback loop can be adjusted, allowing for comparisons of forcing agents to be achieved with relatively short simulations. Comparisons between forcing agents are highly linear in concordance with predicted scaling relationships; for example, the global-mean climate response to a doubling of the CO2 concentration is equivalent to that of a 2.1% change in total solar irradiance. This result is independent of the magnitude of the forcing agent (within the range of radiative forcings considered here) and is consistent across two different climate models.

Using Ceramic Balls to Reduce Noise in a Linear Guideway Type Recirculating Linear Ball Bearing

2003 ◽  
Vol 125 (3) ◽  
pp. 480-486 ◽  
Author(s):  
Hiroyuki Ohta ◽  
Takumi Nakagawa
Keyword(s):  
Sound Pressure Level ◽  
Sound Pressure ◽  
Ball Bearing ◽  
Pressure Level ◽  
Linear Velocity ◽  
Sound Frequency ◽  
Experimental Results ◽  
New Method ◽  
Sound Pressure Levels ◽  
Steel Balls

A new method of reducing the noise of the linear guideway type recirculating linear ball bearing (linear bearing) was studied. In the experiments, the overall sound pressure levels of linear bearings with steel balls or ceramic Si3N4 balls were measured, and sound frequency analyses were carried out. Moreover, based on the assumption that the main cause of the noise may be the collision between the ball and the carriage, the overall sound pressure levels of the linear bearings were analyzed combining the Hertzian theory and the results of previous studies on collision sound. From the results of experiments and analyses, the conclusions were obtained as follows: (1) The overall sound pressure level of the linear bearing with steel balls can be reduced by about 4.5 dB by using Si3N4 balls having the same diameter; (2) The overall sound pressure levels of linear bearings with steel balls or ceramic Si3N4 balls were both increased by about 9.8 dB as the linear velocity increased an octave; and (3) The analytical results, based on the assumption that the main cause of the noise emitted from the linear bearings is the collision between the ball and the carriage, match the experimental results well.

Research of Harmonic Reuse by Fundamental Resonant Method

2014 ◽  
Vol 556-562 ◽  
pp. 1782-1785
Author(s):  
Yu Qin Yao ◽  
Wen Bin Wang
Keyword(s):  
Single Phase ◽  
New Method ◽  
Electric Conduction ◽  
Resonance Theory ◽  
Conduction Theory ◽  
Harmonic Resonance ◽  
Resonant Method ◽  
Three Phases

A new method to store the harmonic energy is proposed, by offering harmonic energy to DC load directly by combining the diode’s one-way electric conduction theory with the first-harmonic resonance theory. Using the PSCAD/EMTDC software to simulate the project in single phase and three phases. And it turn out that the theory is feasible.

Selective Sampling and Orientation of Non-Homogeneous Tissues

1968 ◽  
Vol 26 ◽  
pp. 98-99
Author(s):  
C. C. Clawson ◽  
L. W. Anderson ◽  
R. A. Good
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Light Microscopy ◽  
Random Sampling ◽  
New Method ◽  
Microscope Examination ◽  
Small Areas ◽  
Selective Sampling ◽  
Large Numbers ◽  
Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

Sign in / Sign up

Export Citation Format

Share Document