Absorption of the emission of an He-CO2 laser by CO2, NH3, and water vapor

1972 ◽  
Vol 17 (5) ◽  
pp. 1477-1479 ◽  
Author(s):  
N. I. Moskalenko ◽  
O. V. Zotov ◽  
V. P. Dugin
Keyword(s):  
Water Vapor ◽  
Co2 Laser

Comments on absolute absorption coefficients of atmospheric water vapor at CO2 laser wavelengths

1987 ◽  
Vol 27 (5) ◽  
pp. 345-347 ◽  
Author(s):  
P.L. Meyer ◽  
M.W. Sigrist ◽  
F.K. Kneubühl ◽  
J. Hinderling
Keyword(s):  
Water Vapor ◽  
Co2 Laser ◽  
Atmospheric Water Vapor ◽  
Atmospheric Water ◽  
Absorption Coefficients

CO2 - LASER RADIATION ABSORPTION IN 1000 CM-1 WATER VAPOR CONTINUUM

1980 ◽  
Vol 41 (C9) ◽  
pp. C9-101-C9-105
Author(s):  
V. N. Aref'ev ◽  
N. I. Sizov ◽  
V. I. Dianov-Klokov ◽  
V. M. Ivanov
Keyword(s):  
Water Vapor ◽  
Laser Radiation ◽  
Co2 Laser ◽  
Radiation Absorption ◽  
Co2 Laser Radiation

Consideration of selective and nonselective absorption by water vapor and ozone when sounding atmospheric organic aerosol with a CO2 laser-based IR lidar

2021 ◽  
Author(s):  
Anton Klimkin ◽  
Grigorii Kokhanenko ◽  
Tatiana E. Kuraeva ◽  
Yurii Ponomarev ◽  
Igor Ptashnik
Keyword(s):  
Water Vapor ◽  
Co2 Laser ◽  
Organic Aerosol ◽  
Nonselective Absorption

New Design for a Differentially Pumped Hydration Chamber for a Siemens IA

1971 ◽  
Vol 29 ◽  
pp. 44-45
Author(s):  
R. C. Moretz ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Electron Microscopy ◽  
Water Vapor ◽  
Electron Diffraction ◽  
Water Vapor Pressure ◽  
Biological Materials ◽  
Thin Membrane ◽  
Reliable System ◽  
System A ◽  
Water Films ◽  
Aperture Opening

Electron microscopy and diffraction of biological materials in the hydrated state requires the construction of a chamber in which the water vapor pressure can be maintained at saturation for a given specimen temperature, while minimally affecting the normal vacuum of the remainder of the microscope column. Initial studies with chambers closed by thin membrane windows showed that at the film thicknesses required for electron diffraction at 100 KV the window failure rate was too high to give a reliable system. A single stage, differentially pumped specimen hydration chamber was constructed, consisting of two apertures (70-100μ), which eliminated the necessity of thin membrane windows. This system was used to obtain electron diffraction and electron microscopy of water droplets and thin water films. However, a period of dehydration occurred during initial pumping of the microscope column. Although rehydration occurred within five minutes, biological materials were irreversibly damaged. Another limitation of this system was that the specimen grid was clamped between the apertures, thus limiting the yield of view to the aperture opening.

Hydration Chamber for Jeolco 200 Kv Microscope

1970 ◽  
Vol 28 ◽  
pp. 542-543
Author(s):  
V. R. Matricardi ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Electron Microscope ◽  
Water Vapor ◽  
Vapor Pressure ◽  
Pressure Gradient ◽  
Room Temperature ◽  
List Type ◽  
Type Number ◽  
Equilibrium Vapor Pressure

In order to observe room temperature hydrated specimens in an electron microscope, the following conditions should be satisfied: The specimen should be surrounded by water vapor as close as possible to the equilibrium vapor pressure corresponding to the temperature of the specimen.The specimen grid should be inserted, focused and photo graphed in the shortest possible time in order to minimize dehydration.The full area of the specimen grid should be visible in order to minimize the number of changes of specimen required.There should be no pressure gradient across the grid so that specimens can be straddled across holes.Leakage of water vapor to the column should be minimized.

Warm and freeze-fracture of cotton seed radicles

1987 ◽  
Vol 45 ◽  
pp. 984-985
Author(s):  
E. L. Vigil ◽  
E. F. Erbe
Keyword(s):  
Thin Film ◽  
Water Vapor ◽  
Fracture Surface ◽  
Membrane Structure ◽  
Room Temperature ◽  
Freeze Fracture ◽  
Longitudinal Axis ◽  
Fracture Plane ◽  
Cotton Seeds ◽  
Condensed Water

In cotton seeds the radicle has 12% moisture content which makes it possible to prepare freeze-fracture replicas without fixation or cryoprotection. For this study we have examined replicas of unfixed radicle tissue fractured at room temperature to obtain data on organelle and membrane structure.Excised radicles from seeds of cotton (Gossyplum hirsutum L. M-8) were fractured at room temperature along the longitudinal axis. The fracture was initiated by spliting the basal end of the excised radicle with a razor. This procedure produced a fracture through the tissue along an unknown fracture plane. The warm fractured radicle halves were placed on a thin film of 100% glycerol on a flat brass cap with fracture surface up. The cap was rapidly plunged into liquid nitrogen and transferred to a freeze- etch unit. The sample was etched for 3 min at -95°C to remove any condensed water vapor and then cooled to -150°C for platinum/carbon evaporation.

Transoral Resection of Cancer of the Oral Cavity: The Role of the CO2 Laser

1979 ◽  
Vol 12 (1) ◽  
pp. 207-218 ◽  
Author(s):  
M. Stuart Strong ◽  
Charles W. Vaughan ◽  
Geza J. Jako ◽  
Thomas Polanyi
Keyword(s):  
Oral Cavity ◽  
Co2 Laser ◽  
Transoral Resection

Conservatism Aids CO2 Laser Success in Dark Skin

2007 ◽  
Vol 38 (2) ◽  
pp. 24
Author(s):  
SHARON WORCESTER
Keyword(s):  
Co2 Laser ◽  
Dark Skin
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