scholarly journals Porous diaphragm syndrome with recurrent thymoma

2018 ◽  
Vol 7 (2) ◽  
pp. e00391
Author(s):  
Takayo Ota ◽  
Yoshikazu Hasegawa ◽  
Takafumi Okabe ◽  
Akira Okimura ◽  
Masahiro Fukuoka
Keyword(s):  
Porous Diaphragm

Porous Diaphragm Syndrome with Repeated Rapid Accumulation of Pleural Effusion

2014 ◽  
Vol 53 (10) ◽  
pp. 1075-1077 ◽  
Author(s):  
Takako Okuyama ◽  
Madoka Kimura ◽  
Junji Uchida ◽  
Kazumi Nishino ◽  
Toru Kumagai ◽  
...  
Keyword(s):  
Pleural Effusion ◽  
Rapid Accumulation ◽  
Porous Diaphragm

Porous diaphragm syndrome

2012 ◽  
Vol 43 (1) ◽  
pp. 200-200
Author(s):  
Sandeep Sainathan ◽  
Shahriyour Andaz
Keyword(s):  
Porous Diaphragm

Convective diffusion across a porous diaphragm

1968 ◽  
Vol 72 (12) ◽  
pp. 4168-4171 ◽  
Author(s):  
Allen R. Overman
Keyword(s):  
Convective Diffusion ◽  
Porous Diaphragm

scholarly journals The porous diaphragm method of measuring diffusion velocity, and the velocity of diffusion of potassium chloride in water

1938 ◽  
Vol 168 (934) ◽  
pp. 401-419 ◽  
Keyword(s):  
Diffusion Coefficient ◽  
Steady State ◽  
Dilute Solution ◽  
Cross Sectional ◽  
The Past ◽  
Steady State Method ◽  
Concentrated Solution ◽  
Porous Diaphragm ◽  
Diffusion Tube ◽  
Experimental Difficulty

The velocity of diffusion of substances in dilute solution is a very informative property, but one of which it has been possible in the past to make but little use, on account of the very low accuracy of all but the most extended and laborious experiments, as is well seen in the collection of data KCl in water from various authors plotted by McBain and Dawson (1935). The chief experimental difficulty has been the elimination of the convection which will be produced to some extent by any temperature fluctuations or vibration however small, and particularly by the process of dividing up the diffusing solution when this necessary for analysis. Convection is least serious when concentrated solution of a heavy solute are examined, because the large density gradient has a stabilizing influence: it is also less serious the more rapidly the solute diffuse. Unfortunately, however, there is as yet no satisfactory method of interpreting results in concentrated solutions, and the method of diffusion is most in demand for slow diffusing colloidal solutes. The technique, introduced by Northrop and Anson (1929), and later applied by several other workers (McBain and Liu 1931; Laing McBain 1933; McBain and Dawson 1935; Valkó 1935; Cole and Gordon 1936; Mouquin and Cathcart 1935), of allowing the diffusion to take place only within the diaphragm is almost completely eliminated and is generally utilized outside the diaphragm to maintain the two outer reservoirs of solution uniform in composition. As a consequence of this uniformity we have an approximately steady state in the diaphragm. The method therefore includes the advantage in mathematical interpretation of the steady state method developed by Clack (1908-24), namely, that the rate of diffusion across the diaphragm is an explicit function of the concentration c and the diffusion coefficient D for each concentration, being equal to k ∫ c c ' D dc (1) where c' and c are the concentrations in the reservoirs and k is a constant of the dimensions of length. In Clack's apparatus k is the ratio of cross-sectional area to length of the diffusion tube. In the diaphragm apparatus the value of k can only be determined by calibration with a solute of known diffusion coefficient.

Improved performance Air bio-battery based on efficient oxygen supply with a gas/liquid highly-porous diaphragm cell

2019 ◽  
Vol 124-125 ◽  
pp. 253-259 ◽  
Author(s):  
Koji Toma ◽  
Fumiya Seshima ◽  
Ayumi Maruyama ◽  
Takahiro Arakawa ◽  
Kazuyoshi Yano ◽  
...  
Keyword(s):  
Oxygen Supply ◽  
Diaphragm Cell ◽  
Improved Performance ◽  
Porous Diaphragm ◽  
Highly Porous

scholarly journals I. On electrostriction

1878 ◽  
Vol 26 (179-184) ◽  
pp. 504-512 ◽  
Keyword(s):  
The Difference ◽  
Porous Diaphragm ◽  
Metallic Deposit ◽  
Electrostrictive Effect ◽  
General Conditions

If the bulb of an ordinary thermometer be coated chemically with silver, and then electrically with a metallic deposit, the mercury will traverse some portion of the scale, and finally take up a definite posi­tion, independently of temperature. To this phenomenon I have given the name electrostriction . Of the metals hitherto worked with, copper, silver, iron, and nickel constrict the bulb; zinc and cadmium distend it. The general conditions under which the experiments were made were as follow:—A thermometer coated with silver by immersion in a solution of ammoniacal argentic tartrate was placed vertically near a bare ther­mometer at one side of a depositing cell; the anode stood at a distance of 11 centimetres. The bulbs of the thermometers were about their own depth below the surface of the electrolyte; the covered one was turned half round at every comparison. The source of electricity was a pint Daniell’s cell, having a porous diaphragm, and the circuit included a galvanoscope. Observations were made at definite intervals of time, imme­diately after stirring the liquid; and the difference between the two scales, after suitable reduction, was registered as electrostrictive effect. The temperature was in all cases the unrestricted temperature of the labo­ratory.

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