The effect of roentgen rays on protoplasmic viscosity changes during mitosis

PROTOPLASMA ◽  
1950 ◽  
Vol 39 (3) ◽  
pp. 305-317 ◽  
Author(s):  
Walter L. Wilson
Keyword(s):  
Protoplasmic Viscosity ◽  
Roentgen Rays ◽  
Viscosity Changes

scholarly journals Temperature and the Viscosity of Protoplasm

1924 ◽  
Vol 13 (2) ◽  
pp. 331-339 ◽  
Author(s):  
C. F. A. Pantin
Keyword(s):  
Chemical Process ◽  
Plant Cells ◽  
Effect Of Temperature ◽  
Biological Processes ◽  
Nereis Diversicolor ◽  
Centrifuge Method ◽  
Temperature Coefficients ◽  
Protoplasmic Viscosity ◽  
Viscosity Factor ◽  
Viscosity Changes

(1) The effect of temperature on the viscosity of the protoplasm has been determined in the unripe eggs of Nereis diversicolor by the centrifuge method.The viscosity rises as the temperature falls, the rise becoming rapid near 0°C.(2) These changes of viscosity with temperature are similar to those described by Weber (21) in the protoplasm of certain plant cells.(3) Attention is drawn to the fact that the temperature coefficients of biological processes should be corrected for the viscosity of the protoplasm in which they occur.(4) It is shown that the relative changes of protoplasmic viscosity with temperature are probably of the order required to make the temperature coefficients of biological processes constant when corrected for the viscosity factor.(5) The magnitude of the temperature coefficients of biological processes when corrected for viscosity changes is probably of the same order as that of the temperature coefficients of a chemical process when corrected for changes in the viscosity of its medium.

scholarly journals PROTOPLASMIC VISCOSITY CHANGES DURING MITOSIS IN THE EGG OF CHAETOPTERUS

1948 ◽  
Vol 95 (1) ◽  
pp. 57-68 ◽  
Author(s):  
L. V. HEILBRUNN ◽  
W. L. WILSON
Keyword(s):  
Protoplasmic Viscosity ◽  
Viscosity Changes

On the Roentgen Rays Electrized

1896 ◽  
Vol 41 (1068supp) ◽  
pp. 17065-17066
Author(s):  
A. Lafay
Keyword(s):  
Roentgen Rays

On the Diffraction of the Roentgen Rays

1896 ◽  
Vol 42 (1071supp) ◽  
pp. 17126-17126
Author(s):  
L. Calmette ◽  
G. T. Huillier
Keyword(s):  
Roentgen Rays

Improving Wire Sweep Performance by Measuring Degree of Cure of Epoxy Mold Compounds

2011 ◽  
Author(s):  
Sheila Liza B. Dal
Keyword(s):  
Differential Scanning Calorimetry ◽  
Shelf Life ◽  
Trial And Error ◽  
Active Components ◽  
Scanning Calorimetry ◽  
Degree Of Cure ◽  
Electronic Package ◽  
Viscosity Changes ◽  
Epoxy Mold Compounds

Abstract The choice of epoxy mold compound (EMC) for an electronic package is based mostly on how much protection it provides to the active components in the package. But the choice is not a straightforward process. Rather it is mostly trial and error using different assembly parameters to find the most robust material while assembly defects are monitored. One such defect associated to EMC processing is wire sweep, and many studies have shown that it is mainly caused by viscosity changes in the EMC. In this study, samples of EMC in various stages of shelf life and staging times were analyzed for degree of cure using a method called differential scanning calorimetry (DSC). Samples are then processed at assembly for wire sweep measurement. It was found out that degree of cure increases with staging time at different rates for each shelf life. It was also found out that wire sweep did not only increase with degree of cure but it was also found to be predictable with respect to the latter. Using this information, the age and staging limit for each material was identified that would not cause wire sweep issues.

A mitochondria-targeted near-infrared fluorescent probe for imaging viscosity in living cells and a diabetic mice model

2021 ◽  
Author(s):  
Bochao Chen ◽  
Shumei Mao ◽  
Yanyan Sun ◽  
Liyuan Sun ◽  
Ning Ding ◽  
...  
Keyword(s):  
Mouse Model ◽  
Fluorescent Probe ◽  
Near Infrared ◽  
Diabetic Mouse ◽  
Living Cells ◽  
Pancreatic Tissue ◽  
Diabetic Mice ◽  
Mice Model ◽  
Viscosity Changes

A mitochondria-targeted near-infrared fluorescent probe NIR-V with 700 nm emission was designed to monitor cell viscosity changes, which was applied to detect the intracellular viscosity and imagine pancreatic tissue in diabetic mouse model.

STUDIES ON THE EFFECT OF ROENTGEN RAYS ON GLANDULAR ACTIVITY

1924 ◽  
Vol 83 (25) ◽  
pp. 1977 ◽  
Author(s):  
A. C. IVY ◽  
J. E. McCARTHY ◽  
B. H. ORNDOFF
Keyword(s):  
Roentgen Rays
Sign in / Sign up

Export Citation Format

Share Document