scholarly journals Development of Novel Reactions Induced by Coherent Molecular Vibrational Excitation and Direct Observation of Molecular Structural Change during “Thermal” Reactions

2016 ◽  
Vol 89 (3) ◽  
pp. 296-307 ◽  
Author(s):  
Izumi Iwakura ◽  
Atsushi Yabushita
Keyword(s):  
Structural Change ◽  
Direct Observation ◽  
Vibrational Excitation ◽  
Thermal Reactions

Direct Observation of the Structural Change of Tyr174 in the Primary Reaction of Sensory Rhodopsin II

Biochemistry ◽  
2011 ◽  
Vol 50 (15) ◽  
pp. 3170-3180 ◽  
Author(s):  
Misao Mizuno ◽  
Yuki Sudo ◽  
Michio Homma ◽  
Yasuhisa Mizutani
Keyword(s):  
Structural Change ◽  
Direct Observation ◽  
Primary Reaction ◽  
Sensory Rhodopsin

Direct observation of structural change in Au-incorporated carbon nanofibers during field emission process

Carbon ◽  
2014 ◽  
Vol 75 ◽  
pp. 277-280 ◽  
Author(s):  
Chisato Takahashi ◽  
Yazid Yaakob ◽  
Mohd Zamri Mohd Yusop ◽  
Golap Kalita ◽  
Masaki Tanemura
Keyword(s):  
Structural Change ◽  
Carbon Nanofibers ◽  
Field Emission ◽  
Direct Observation ◽  
Emission Process

Direct Observation of Heat Exchanger Deposits by Cross Sectioning

1967 ◽  
Vol 25 ◽  
pp. 364-365
Author(s):  
R. W. Anderson ◽  
D. L. Senecal
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Heat Exchanger ◽  
Direct Observation ◽  
Cross Sections ◽  
Preparation Method ◽  
Specimen Preparation ◽  
Flowing Water ◽  
Transmission Electron ◽  
Deposit Layer

A problem was presented to observe the packing densities of deposits of sub-micron corrosion product particles. The deposits were 5-100 mils thick and had formed on the inside surfaces of 3/8 inch diameter Zircaloy-2 heat exchanger tubes. The particles were iron oxides deposited from flowing water and consequently were only weakly bonded. Particular care was required during handling to preserve the original formations of the deposits. The specimen preparation method described below allowed direct observation of cross sections of the deposit layers by transmission electron microscopy.The specimens were short sections of the tubes (about 3 inches long) that were carefully cut from the systems. The insides of the tube sections were first coated with a thin layer of a fluid epoxy resin by dipping. This coating served to impregnate the deposit layer as well as to protect the layer if subsequent handling were required.

Application of a Simple Cold Stub to the Direct Observation of Frozen Hydrated Sand

1973 ◽  
Vol 31 ◽  
pp. 212-213
Author(s):  
John M. Wehrung ◽  
Richard J. Harniman
Keyword(s):  
United States ◽  
Surface Water ◽  
Direct Observation ◽  
Controlled Study ◽  
Clay Particles ◽  
Organic Debris ◽  
Rock Formations ◽  
Water Tables ◽  
Permeable Rock ◽  
Natural Means

Water tables in aquifer regions of the southwest United States are dropping off at a rate which is greater than can be replaced by natural means. It is estimated that by 1985 wells will run dry in this region unless adequate artificial recharging can be accomplished. Recharging with surface water is limited by the plugging of permeable rock formations underground by clay particles and organic debris.A controlled study was initiated in which sand grains were used as the rock formation and water with known clay concentrations as the recharge media. The plugging mechanism was investigated by direct observation in the SEM of frozen hydrated sand samples from selected depths.

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