What's the difference between recrystallization and technique?

Recrystallization


Definition:

  • (n.) The process or recrystallizing.

Example Sentences:

  • (1) The recrystallized surface protein arrays gave a resolution of approximately 1.3 nm in projection after correlation averaging of negatively stained preparations.
  • (2) A synthetic precursor to a potent dopaminergic agonist, (RS)-4-hydroxy-2-(di-n-propylamino)indan, has been resolved by classical recrystallization procedures, and the absolute configurations of the enantiomers have been established by X-ray crystallographic analysis.
  • (3) Pure alpha-epimer was obtained by recrystallization and low pressure silica gel column chromatography combined with HPLC method.
  • (4) Microsomal and low speed pellets with added cofactors formed products which recrystallized with either etiocholanolone or androsterone from [3H]T or [3H]DHT, respectively.
  • (5) The blood-brain barrier in the rhesus monkey was opened to intravascular Evans blue-albumin, without causing brain edema or altering brain electrolytes, by perfusing 2.5 molal recrystallized D,L-lactamide into the internal carotid artery for 20--30 sec.
  • (6) Electrophoresis, microscopical observation and pH dependency of encapsulability of recrystallized cores revealed that the electrostatic attractive force between gelatin molecules in solution and a polymer attached to the core particle cause gelatin adsorption on the core surface to result in a great improvement in encapsulability.
  • (7) The porosity in lased enamel was overall very similar to that seen in enamel heated in an electric furnace to a temperature of 600 degrees C. The presence of recrystallized enamel crystals indicated a temperature rise of approximately 1000 degrees C and the grain growth indicated that a temperature > or = 1000 degrees C existed for some time after the laser irradiation.
  • (8) Products of cholesterol auto-oxidation were concentrated from several lots of USP-grade cholesterol by recrystallizing cholesterol from the methanol extract, retaining the mother liquor, and evaporating the residuum to dryness under vacuum.
  • (9) Recrystallization of the synthetic product produced material identical in all respects with natural PGE1.
  • (10) Experiments showed that sulphadimidine crystals recrystallized from ethanol had better dissolution and absorption characteristics than sulphadimidine crystals recrystallized from methanol.
  • (11) Thermal studies (DSC and HSM) showed that form II melts at 196 degrees C, while form I melts at 193 degrees C, immediately followed by a resolidification and remelt at 196 degrees C. The conversion of form II to form I was accomplished by recrystallization from ethanol or methanol, and the form I-to-form II transition was obtained by controlled heating of form I around 194 degrees C. Quantitative XRD was used to determine the polymorphic composition, with a detection limit of less than 1% of the minor form and a linearity of 0-10% form I in form II (correlation coefficient of 0.999).
  • (12) Microcapsule batch reproducibility depended mainly on the variation in particle size distribution of the recrystallized core material.
  • (13) After the administration of 3-H-testosterone to castrated hamsters, extracts from crude nuclei were separated into bound and free fractions by gel filtration of Sephadex G-25, Subsequent analysis by thin-layer chromatography and recrystallization showed that dihydrotestosterone was the predominant radioactive steroid in the bound fraction and that it increased steadily with time until 1 hr after the injection.
  • (14) 1,2-Dimethyl-3-hydroxy-4-pyridone (1), a crystalline oral iron chelator, forms an acetic acid solvate (2) on recrystallization from acetic acid and carbon tetrachloride.
  • (15) Recrystallization of the purified enzyme under different conditions readily produces a variety of single crystals.
  • (16) Ice recrystallization was practically absent at the temperature normally used in cryo-sectioning (-70 degrees C).
  • (17) A convenient, detailed procedure is given for the recrystallization of commercial dithionite from 0.1 M NaOH-methanol under anaerobic conditions.
  • (18) Thus, the protein penetrates partway into the bilayer, distorts the packing of the lipid fatty acid chains, and prevents recrystallization, thus decreasing the phase transition temperature.
  • (19) Winter stem fluid from the bittersweet nightshade, Solanum dulcamara L., also showed the recrystallization inhibition activity characteristic of the animal thermal hysteresis proteins (THPs), suggesting a possible function for the THPs in this freeze tolerant species.
  • (20) The chimeric proteins varied in their effectiveness of inhibiting ice recrystallization according to the number of 11-amino acid repeats present in the antifreeze moiety.

Technique


Definition:

  • (n.) Same as Technic, n.

Example Sentences:

  • (1) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
  • (2) The technique is facilitated by an amazingly low tendency to bleeding.
  • (3) Renal micropuncture and microdissection techniques with ultramicro fluid analysis have been applied to evaluate single nephron function in the skate, Raja erinacea.
  • (4) Use of the improved operative technique contributed to reduction in number of complications.
  • (5) We conclude that first-transit and blood-pool techniques are equally accurate methods for determining EF when the time-activity method of analysis is employed.
  • (6) Multiple overlapping thin 3D slab acquisition is presented as a magnitude contrast (time of flight) technique which combines advantages from multiple thin slice 2D and direct 3D volume acquisitions to obtain high-resolution cross-sectional images of vessel detail.
  • (7) ASF-II was purified to apparent homogeneity by using concanavalin A-agarose affinity chromatography, DEAE-cellulose chromatography, alumina gel adsorption, and isoelectric focussing techniques.
  • (8) When the data correlating DHT with protein synthesis using both labelling techniques were combined, the curves were parallel and a strong correlation was noted between DHT and protein synthesis over a wide range of values (P less than 0.001).
  • (9) In choosing between various scanning techniques the factors to be considered include availability, cost, the type of equipment, the expertise of the medical and technical staff, and the inherent capabilities of the system.
  • (10) Past imaging techniques shown in the courtroom have made the conventional rules of evidence more difficult because of the different informational content and format required for presentation of these data.
  • (11) The strengths and weaknesses of each technique are described in this article.
  • (12) While stereology is the principal technique, particularly in its application to the parenchyma, other compartments such as the airways and vasculature demand modifications or different methods altogether.
  • (13) Standard nerve conduction techniques using constant measured distances were applied to evaluate the median, ulnar and radial nerves.
  • (14) The stopped-flow technique was used to measure the rate constants for the reactions between the oxidized forms of peroxidase with luminol and the following substrates: p-iodophenol, p-bromophenol, p-clorophenol, o-iodophenol, m-iodophenol, luciferin, and 2-iodo-6-hydroxybenzothiazole.
  • (15) The purpose of this paper is to discuss the potential for integrating surveillance techniques in reproductive epidemiology with geographic information system technology in order to identify populations at risk around hazardous waste sites.
  • (16) Here, we review the nature of the heart sound signal and the various signal-processing techniques that have been applied to PCG analysis.
  • (17) Chromatography and immunoassays are the two principal techniques used in research and clinical laboratories for the measurement of drug concentrations in biological fluids.
  • (18) Six of the patients were operated using the McIndoe and Bannister technique while on the other two the Tobin and Day technique was used.
  • (19) A review is presented concerning the development of new neuroimaging techniques in the last decade which have improved the diagnostic exploration of patients with spinal cord injuries, including studies of possible sequelae.
  • (20) How useful is the technique for evaluating therapeutic efficacy?