Phosphate Fertilizers by Calcination Process Factors Affecting the Reaction between Water Vapor and Florida Land-Pebble Phosphate

1935 ◽  
Vol 27 (1) ◽  
pp. 87-91 ◽  
Author(s):  
D. S. Reynolds ◽  
K. D. Jacob ◽  
H. L. Marshall ◽  
L. F. Rader
Keyword(s):  
Water Vapor ◽  
Phosphate Fertilizers ◽  
Calcination Process ◽  
Factors Affecting ◽  
Process Factors

Phosphate Fertilizers by Calcination Process - Action of Silica and Water Vapor on Phosphate Rock

1934 ◽  
Vol 26 (4) ◽  
pp. 406-412 ◽  
Author(s):  
D. S. Reynolds ◽  
K. D. Jacob ◽  
L. F. Rader
Keyword(s):  
Water Vapor ◽  
Phosphate Rock ◽  
Phosphate Fertilizers ◽  
Calcination Process

scholarly journals Enzymatic Process for Cystoseira barbata Valorization: Ethanol Production and Additional By-Products

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 741
Author(s):  
Doinita-Roxana Cioroiu Tirpan ◽  
Ancaelena Eliza Sterpu ◽  
Claudia Irina Koncsag ◽  
Alina Georgiana Ciufu ◽  
Tănase Dobre
Keyword(s):  
Ethanol Production ◽  
Alcoholic Fermentation ◽  
Ethanol Yield ◽  
Product Yield ◽  
Liquid Ratio ◽  
Experimental Conditions ◽  
Factors Affecting ◽  
Cystoseira Barbata ◽  
Main Factors ◽  
Process Factors

The aim of this study is to evaluate the potential of dried Cystoseira barbata alga for ethanol production through alcoholic fermentation. The influence of the main factors affecting the fermentation are studied in the frame of a 23 factorial experimental plan. The main factors influencing the process are the fermentation temperature (t from 25 °C to 35 °C), the solid to liquid ratio (S/L from 0.040 g/g to 0.080 g/g), and the cellulase ratio (R from 8 U/g d.m to 16 U/g d.m.). The maximum volatile compounds yield of 0.2808 g/g d.m and ethanol yield of 0.0158 g/g d.m were favored by the following experimental conditions: process temperature of 35 °C, solid to liquid ratio of 0.0415, and enzyme ratio of 16 U/g d.m. A statistical model was used to correlate the product yield with the process factors. Additionally, 19 interesting bioactive compounds were found in the enzymatic hydrolysis and alcoholic fermentation broths which seem likely to maintain natural defence mechanisms against diseases and physical disorders.

scholarly journals Size-at-maturity shift in a male-only fishery: factors affecting molt-type outcomes in Newfoundland and Labrador snow crab (Chionoecetes opilio)

2020 ◽  
Author(s):  
Darrell R J Mullowney ◽  
Krista D Baker
Keyword(s):  
Population Density ◽  
Newfoundland And Labrador ◽  
Cold Water ◽  
Large Male ◽  
Snow Crab ◽  
Size At Maturity ◽  
Chionoecetes Opilio ◽  
Factors Affecting ◽  
Male Density ◽  
Process Factors

Abstract A sex-asymmetric downward shift in size-at-terminal-molt has recently occurred in males in some portions of the Newfoundland and Labrador (NL) snow crab stock range, a first known occurrence for such processes in snow crab (Chionoecetes opilio) stocks. This study examines plausible factors promoting the shift in size-at-terminal-molt [synonymous with size-at-maturity (SaM)] including individual size, temperature, population density, and sex ratio. Analyses highlight expanse of cold water and large male density as being significant predictors of molt-type outcomes. A confluence of cold conditions and low density of large males promoted the SaM shift. In turn, the low male density was associated with recently elevated fishery exploitation rates under quota-controlled management. It remains unknown the extent to which the reduction in terminal size reflects a phenotypic vs. genotypic process. Factors affecting skip-molting in male snow crab are investigated, and we find that skip-molting occurs most frequently under extreme cold and high population density conditions. Potential complications arising from altered growth dynamics are discussed. Overall, the results advance knowledge on intraspecific competition processes within snow crab populations and inform fisheries management systems that male-only harvest strategies do not provide full protection from biological harm to aquatic resources through fishing.

Factors Affecting Water Vapor Transmission through Polymer Films Applied to Solid Surfaces

1974 ◽  
Vol 63 (6) ◽  
pp. 931-933 ◽  
Author(s):  
Anton H. Amann ◽  
Richard E. Lindstrom ◽  
James Swarbrick
Keyword(s):  
Water Vapor ◽  
Polymer Films ◽  
Solid Surfaces ◽  
Factors Affecting ◽  
Water Vapor Transmission

scholarly journals WATER VAPOR TRANSMISSION RATES OF CELGARD® D-304 MICROPOROUS, POLYPROPYLENE FILMS

HortScience ◽  
1992 ◽  
Vol 27 (11) ◽  
pp. 1175h-1176
Author(s):  
Laura Dellevigne ◽  
Peter Vergano ◽  
Lee Wiles ◽  
Andy Hale ◽  
Jeff Adelberg
Keyword(s):  
Water Vapor ◽  
Plant Growth ◽  
Growth Rates ◽  
Membrane Rafts ◽  
Polypropylene Film ◽  
Factors Affecting ◽  
Transmission Rates ◽  
Water Vapor Transmission ◽  
Micropropagated Plants ◽  
Growth Experiments

Commercially produced membrane rafts containing Celgard D-304 microporous, polypropylene film are used to support the growth of micropropagated plants in liquid media. This method is used because growth experiments using membranes resulted in plant growth rates equal to or greater than those grown on agar. Inconsistent results of plant growth on these rafts led to an interest in measuring the water vapor transmission rates (WVTR) of the membranes. A modified WVTR test (ASTM E96-80) was used on 15 raft samples. Results showed that the supplier's value of 49.2 g/m2 ·hr falls within the range of measured values of 39.2 to 54.8 g/m2·hr. Inconsistencies in growth of micropropagated plants may not be due to variability in the WVTR of the Celgard film. It is possible that the WVTR of the film is not the most important factor in facilitating liquid nutrient transport across the membrane. Other properties of the film need to be measured to determine factors affecting growth rates observed.

scholarly journals An analysis of the viability of implementing steam screw machines at the facilities of energy generation enterprises to reduce the energy costs for their own need

2019 ◽  
Vol 124 ◽  
pp. 01016 ◽  
Author(s):  
D. S. Balzamov ◽  
I. G. Akhmetova ◽  
E. Y. Balzamova ◽  
G. I. Oykina ◽  
Gelu COMAN
Keyword(s):  
Water Vapor ◽  
Energy Consumption ◽  
Potential Energy ◽  
Energy Generation ◽  
Operating Conditions ◽  
Energy Sources ◽  
Energy Costs ◽  
Factors Affecting ◽  
Urgent Task ◽  
Current Operating

Reducing the energy consumption for the own needs of energy sources is an urgent task that can be solved by organizing our own energy sources by using the potential energy of water vapor in steam screw machines. The article discusses some options for installing steam screw machines at the facilities of generating companies and identifies factors affecting the return on steam screw machines in the current operating conditions.

Closing the Loop: Review Process Factors Affecting Audit Staff Follow-Through

2011 ◽  
Vol 49 (5) ◽  
pp. 1275-1306 ◽  
Author(s):  
TAMARA A. LAMBERT ◽  
CHRISTOPHER P. AGOGLIA
Keyword(s):  
Review Process ◽  
Factors Affecting ◽  
Closing The Loop ◽  
Process Factors
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