Molybdenum and rhenium disulfide synthesis via high-pressure carbonate melt

CrystEngComm ◽  
2019 ◽  
Vol 21 (30) ◽  
pp. 4513-4518 ◽  
Author(s):  
Michael Anenburg
Keyword(s):  
High Pressure ◽  
Crystal Size ◽  
New Method ◽  
Carbonate Flux ◽  
Carbonate Melt

A new method is shown for the crystallisation of molybdenum and rhenium disulfide from high pressure liquid carbonate flux. Crystal size ranges from 10s to 100s of micrometres.

STUDY ON NEW ICE SLURRY GENERATOR USING NaCl AQUEOUS SOLUTION AT LOW CONCENTRATION

2013 ◽  
Vol 21 (01) ◽  
pp. 1350004 ◽  
Author(s):  
KOJI FUMOTO ◽  
TSUYOSHI KAWANAMI ◽  
TAKAO INAMURA
Keyword(s):  
Aqueous Solution ◽  
High Pressure ◽  
Test Section ◽  
Freezing Point ◽  
New Method ◽  
Heat Of Fusion ◽  
Test Fluid ◽  
Ice Slurry ◽  
Slurry Ice ◽  
Experimental Apparatus

A cold thermal energy storage system has been developed for HVAC. There are many ice-based cooling systems operating around the world. Ice slurry, which is a mixture of fine ice crystals and liquid water, is utilized in ice storage systems owing to its good flowability and large latent heat of fusion. For slurry ice production techniques, there are presently a number of commercially available ice slurry generators (e.g., Supercooled slurry ice generator, Scraper type generator, and Vacuum type generator, etc.). In the present study, a new method was developed to generate ice slurry without the deposition of an ice layer on a cooled surface. The basic components of the experimental apparatus is a cooling brine circulating loop, a high pressure pump, a valve, an aqueous solution flow loop containing the test section, which is made of transparent acrylic, and the associated instrumentation. This new method is based on freezing-point depression of the aqueous solution, which is maintained under high-pressure conditions. To control the timing for solidification and to generate ice slurry, we investigated the relationships among the pressure and temperature of the aqueous solution. The freezing phenomenon of the aqueous solution in the test section was observed in detail. As a result, we developed a new ice slurry generator based on the new method that controls the pressure and temperature of the aqueous solution. Experimental results showed that the characteristics of the ice slurry generation were closely related to the pressure and initial stage temperature of the test fluid. Finally, the optimum operation condition of the ice slurry generator based on visualization experiment was discussed.

Barofractionation as an Innovative Method to Obtain Pectic Polysaccharides

2021 ◽  
Vol 899 ◽  
pp. 599-605
Author(s):  
Dara Slobodova ◽  
Raisa Gorshkova ◽  
Stanislav Pankov
Keyword(s):  
High Pressure ◽  
Physicochemical Parameters ◽  
New Method ◽  
High Yield ◽  
Dynamic Mode ◽  
High Quality ◽  
Pectic Polysaccharides ◽  
Ph Values ◽  
Pectin Polysaccharides ◽  
Innovative Method

An innovative method has been developed and an installation has been created for obtaining pectin polysaccharides in a dynamic mode under the influence of high pressure. The process of degradation of protopectin at various pH values pH of the hydrolyzing agent was studied using the example of sunflower baskets. It has been established that the use of the new method makes it possible to obtain high-quality target products with a high yield in gentle conditions. The possibility of combining the stages of hydrolysis-extraction and fractionation has been demonstrated, which makes it possible to control the process of obtaining pectic polysaccharides in the direction of obtaining substances with specified physicochemical parameters.

A COMPARISON OF INJURY AND SURVIVAL OF LARVAE OF CEPHUS CINCTUS NORT. AFTER INTRACELLULAR AND EXTRACELLULAR FREEZING

1961 ◽  
Vol 39 (3) ◽  
pp. 349-357 ◽  
Author(s):  
R. W. Salt
Keyword(s):  
Strong Evidence ◽  
Crystal Size ◽  
Activity Level ◽  
New Method ◽  
Freezing Injury ◽  
Ice Crystal ◽  
Wheat Stem Sawfly ◽  
Cephus Cinctus ◽  
Level Of Activity ◽  
Ice Crystal Size

Extracellular freezing of larvae of the wheat stem sawfly, Cephus cinctus Nort., was produced at −2.5 °C by a new method. Slow further cooling to −10, −15, or −20 °C added to extracellular ice with no intracellular freezing. Other larvae that were supercooled to and frozen at −10, −15, or −20 °C froze intracellularly. Comparisons of the effects of these two types of freezing were therefore possible at equivalent temperatures. Level of activity after freezing was used as the criterion of injury.Intracellular freezing was more injurious than extracellular freezing at −15 and −20 °C, but not at −10 °C. Injuries, as well as differences in injury due to type of freezing, decreased gradually to insignificance above −10 °C. Although larvae frozen extracellularly held an initial advantage over those frozen intracellularly, survivors of the latter group retained their vitality better, probably because they lost weight more slowly.Differences in injury and in activity level after freezing at −15 and −20 °C were insufficient to justify the use of freezing site (intracellular or extracellular) as a principal basis for explaining freezing injury. The same conclusion applies to ice crystal size and configuration, which differed vastly in the two types of freezing.These conclusions depend on whether freezing was actually intracellular or extracellular as represented. Strong evidence is presented that freezing was in fact as specified.

A new method of determining the transport coefficients for high pressure arcs from experimental data

1969 ◽  
Vol 3 (2) ◽  
pp. 269-280 ◽  
Author(s):  
L. B. Kapp ◽  
P. H. Richards
Keyword(s):  
Experimental Data ◽  
High Pressure ◽  
Computer Program ◽  
Numerical Method ◽  
Temperature Profile ◽  
Transport Coefficients ◽  
New Method ◽  
Radial Temperature ◽  
Current Voltage ◽  
Current Voltage Characteristics

The problem is to determine the electrical and thermal conductivities of high pressure are plasmas from measurements of the current—voltage characteristics of the are and a single radial temperature profile. A new numerical method is described together with the corresponding computer program. The latter is applied to some recent measurements on wall-stabilized nitrogen ares, covering the temperature range 4500—11,000 °K, for which radiation can be neglected, and the results are compared with those of other workers.

A new method of absolute high pressure determination

1973 ◽  
Vol 6 (10) ◽  
pp. 1295-1306 ◽  
Author(s):  
Arthur L Ruoff ◽  
R C Lincoln ◽  
Y C Chen
Keyword(s):  
High Pressure ◽  
New Method

A New Method for Correcting Shale High-Pressure Adsorption Curves Based on Instantaneous Adsorption Capacity

SPE Journal ◽  
2020 ◽  
Author(s):  
Xianggang Duan ◽  
Zhiming Hu ◽  
Changhong Cai ◽  
Wuguang Li ◽  
Jin Chang ◽  
...  
Keyword(s):  
High Pressure ◽  
Adsorption Capacity ◽  
New Method ◽  
High Pressure Adsorption

scholarly journals A new method for the selective isolation of cysteine-containing peptides. Specific labelling of the thiol group with a hydrophobic chromophore

1983 ◽  
Vol 211 (1) ◽  
pp. 163-171 ◽  
Author(s):  
J Y Chang ◽  
R Knecht ◽  
D G Braun
Keyword(s):  
High Pressure ◽  
Light Chain ◽  
Visible Region ◽  
High Sensitivity ◽  
Thiol Group ◽  
Reversed Phase ◽  
New Method ◽  
Kappa Light Chain ◽  
Selective Isolation ◽  
Specific Labelling

A new method for the selective isolation of cysteine-containing peptides was designed. The method is based on the specific labelling of thiol groups with a hydrophobic chromophore followed by enzymic fragmentation of the labelled protein and reversed-phase high-pressure liquid-chromatographic separation of the peptide mixture. This new method has several distinct advantages: (1) the hydrophobic-chromophore-labelled cysteine-containing peptides are easily separated from non-cysteine-containing peptides by reversed-phase high-pressure liquid chromatography; (2) only cysteine-containing peptides are detected in the visible region with sensitivity at the low picomole level; this high sensitivity allows isolation of nanogram amounts of pure cysteine-containing peptide; (3) during sequence determination of the chromophore-labelled cysteine-containing peptides, the cysteine residues are released as coloured anilinothiazolinone derivatives and can be detected directly in the picomole range; (4) with proteins bearing several disulphide groups, each disulphide group may undergo a different degree of reduction, and therefore the recovery of individual cysteine-containing peptides may be used to deduce the disulphide linkages present in the native protein. Two thiol-specific reagents, 4-dimethylaminoazobenzene-4′-iodoacetamide and 4-dimethylaminoazobenzene-4′-N-maleimide, were synthesized and characterized. The method was successfully used to isolate five cysteine-containing peptides from a completely reduced monoclonal-antibody kappa-light chain raised against the azobenzenearsonate determinant and six cysteine-containing peptides from a kappa-light chain raised against streptococcal group A polysaccharide. The principle of this method is applicable to the isolation of any peptide containing amino acid residues that can be specifically labelled with a hydrophobic chromophore.

Sign in / Sign up

Export Citation Format

Share Document