THE EXCHANGE OF OXYGEN-18 BETWEEN CELLULOSE, ADSORBED WATER, AND WATER VAPOR

Oxygen Isotope Exchange between Metabolites and Water during Biochemical Reactions Leading to Cellulose Synthesis.

Cellulose was produced heterotrophically from different carbon substrates by carrot tissue cultures and Acetobacter xylinum (a cellulose-producing bacterium) and by castor bean seeds germinated in the dark, in each case in the presence of water having known concentration of oxygen-18 ((18)O). We used the relationship between the amount of (18)O in the water and in the cellulose that was synthes...

Mass transfer of water vapor, carbon dioxide and oxygen on modified cellulose fiber-based materials

Enhanced Water Vapor Flow in Silica Microchannels : The Effect of Adsorbed Water on Tangential

Jamesh, M., Boxman, R., Bilek, M., Kocer, C., Hu, T., Zhang, X., McKenzie, D., Chu, P. (2016). Effects of pulse voltage and deposition time on the adhesion strength of graded metal/carbon films deposited on bendable stainless steel foils by hybrid cathodic arc glow discharge plasma assisted chemical vapor deposition. Applied Surface Science, 366, 535-544. <a href="http://dx.doi.org/10.1016/j.ap...

Rapid biologically mediated oxygen isotope exchange between water and phosphate

[1] In order to better constrain the rate of oxygen isotope exchange between water and phosphate via biochemical reactions a set of controlled experiments were conducted in 1988 at the Aquaculture Plant in Elat, Israel. Different species of algae and other organisms were grown in seawater tanks under controlled conditions, and the water temperature and oxygen isotopic composition (dOw) were mon...

Oxygen-18 Content of Atmospheric Oxygen Does Not Affect the Oxygen Isotope Relationship between Environmental Water and Cellulose in a Submerged Aquatic Plant, Egeria densa Planch.

We determined that the oxygen isotopic composition of cellulose synthesized by a submerged plant, Egeria densa Planch., is related to the isotopic composition of environmental water by a linear function, delta(18)O cellulose = 0.48 delta(18)O water + 24.1% per thousand. The observation of a slope of less than 1 indicates that a portion of cellulose oxygen is derived from an isotopically constan...