What's the difference between butylene and synthetic?

Butylene


Definition:

  • (n.) Any one of three metameric hydrocarbons, C4H8, of the ethylene series. They are gaseous or easily liquefiable.

Example Sentences:

  • (1) 10 aryl propylene oxides and 6 aryl butylene oxides were synthesized.
  • (2) We study the "suicide" phenomena as well as metabolic pathways of mixed acids (methyl red test, MR) and butylene glycol (Voges-Proskauer, VP), in 107 strains belonging to mesophilic Aeromonas group, isolated from stools.
  • (3) Several oligomers of poly(butylene tartrate)s were synthesized and their kinetic behavior was studied under acidic conditions.
  • (4) Three general test groups of volatile organic chemicals were identified by test data: chemicals which had boiling points below 63 degrees C, for which the vaporization technique was the most sensitive test procedure (ethylene, propylene, and butylene oxides and methylene chloride); chemicals which had boiling points from 107 degrees to 132 degrees C, for which the vaporization technique was still useful, but where sensitivity was only slightly increased over the preincubation technique (1-bromo-2-chloroethane, epichlorohydrin, and ethylene dibromide); and 3) a chemical which had a boiling point at 194 degrees C, where the preincubation technique was the most appropriate test method (styrene oxide).
  • (5) Thirty percent 1,3-butylene glycol and 30% propylene glycol were approximately as effective as 10% HG.
  • (6) This paper reports the identification of seven individual oligomers isolated from a poly(butylene adipate) plasticizer.
  • (7) The antimicrobial properties of three glycols, - propylene glycol, hexylene glycol, and 1,3-butylene glycol - against Candida albicans, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes A, Streptococcus mitis, and E. coli were studied in vitro.
  • (8) In contrast, 1,3-butylene glycol had no protective effects.
  • (9) Several oligomers of poly(butylene tartrate) were synthesized, and their kinetic behavior was studied under alkaline conditions.
  • (10) The concentration of butylene glycol obtained in the fermentation beer ranged from 2.3 to 4.4%.
  • (11) The film was made of polymer blends consisting of polypropylene, styrene ethylene butylene styrene-block copolymer, and ethylene ethylacrylate copolymer.
  • (12) The other short chain (C2 to C4) alkyldiols were separated by this method and did not interfere with the quantitation of 1,3-butylene glycol.
  • (13) A microanalytical method with direct on-column specimen injection for determination of 1,3-butylene glycol (1,3-butanediol) in whole blood or plasma using gas-liquid chromatography with flame ionization is described.
  • (14) However, all compounds were mutagenic in at least one system with the propylene oxides being more mutagenic than the corresponding butylene oxide derivatives.
  • (15) The biodegradability of three aliphatic adipic acid diesters and a 1,3-butylene glycol adipic acid polyester was determined in acclimated, activated sludge systems.
  • (16) GC analysis of epichlorohydrin and butylene oxide concentrations within Tedlar bags suggested that these two chemicals volatilized and were contained in the media after 1 hr of incubation at 37 degrees C. The mutagenic activity of six volatile liquid mutagens was similar in single and triple plate Tedlar bags.
  • (17) The results speak in favour of using hexylene glycol in cosmetic and dermatological vehicles instead of propylene glycol and 1,3-butylene glycol.
  • (18) The method described is suitable for the rapid detection of potentially toxic blood or plasma levels of 1,3-butylene glycol, as well as for the detection of other short chain glycols.
  • (19) Maximal production of butylene glycol with minimal residual sugar was obtained with a medium consisting of molasses, diluted to 20 degrees Brix, and 0.4% urea.
  • (20) Lard, medium chain triglycerides, or 1,3-butylene glycol comprised 43% of the diet fed to mice.

Synthetic


Definition:

  • (a.) Alt. of Synthetical

Example Sentences:

  • (1) Further analysis with two other synthetic peptides (212Cys to 222Glu and Cys X 221Ile to 236Glu) indicated that the dodecapeptide Ile-Glu-Phe-Gln-Lys-Asn-Asn-Arg-Leu-Leu-Glu mimicked either the whole or a major part of the neutralization epitope.
  • (2) Actinomycin D could suppress the effects of RSD feeding on the protein synthetic rate of some, but not of all, secretory proteins.
  • (3) We studied the haemodynamic (ultrasound Doppler flow probes) effects of synthetic atriopeptin II at natriuretic doses in conscious rats.
  • (4) With the stimulated liver being irradiated, the number of cells synthetizing DNA and entering into mitosis was seen reduced almost twice, whereas DNA synthesis and entering into mitosis were delayed, resp., by 4 and 6 hours.
  • (5) A rapid method is described for the purification and analysis of synthetic oligonucleotides, based on reversed-phase high-performance liquid chromatography.
  • (6) Binding studies with synthetic IL2-derived peptides revealed the location of the epitope, which is recognized by mAb BO-7: A peptide representing amino acid residues 59-72 (peptide 84) is strongly reactive with the antibody, while an overlapping peptide (residues 48-69) is not.
  • (7) Because the HRG level is increased in Child A liver cirrhosis, we suggest that other mechanisms, other than simply a decreased synthetic capacity of the liver, contribute to the changes in HRG levels in patients with liver disease.
  • (8) Blood acid-base status, serum electrolytes, and urine pH were examined in 64 infants and children with phenylketonuria (PKU) treated with three different low phenylalanine protein hydrolyzates (Aponti, Cymogran, AlbumaidXP) and two synthetic amino acid mixtures (Aminogran, PAM).
  • (9) Synthetic DNA corresponding to the hydrophobic domain of cytochrome b5 was enzymatically fused in-frame to cloned DNA corresponding to the C-terminus of the Escherichia coli enzyme, beta-galactosidase.
  • (10) An antibody was generated against a synthetic peptide corresponding to a region of the protein encoded by alpha o2 cDNA.
  • (11) Sephadex chromatography of fractions which co-eluted with synthetic oCRF-41 or hAVP contained CRF bioactivity and this bioactivity was potentiated when synthetic hAVP or oCRF-41, respectively, were added to the fractions.
  • (12) Binding of uPA to filters was blocked by a synthetic oligopeptide containing the known receptor binding region of native uPA.
  • (13) Dynamics in the changes was established among the workers from the production of "Synthetic rubber and latex", associated with the duration of occupational exposure to styrene and divinyl.
  • (14) We then used synthetic peptides spanning the active fragment to identify the primary sequence of the adhesive site as Leu-Arg-Glu (LRE): neurons attach to an immobilized LRE-containing peptide, and soluble LRE blocks attachment of neurons to the s-laminin fragment.
  • (15) The internal carotid diameters increased 20% to 30% for both the vein and synthetic patched arteries.
  • (16) Studies using serum from mice that had been immunized with synthetic peptides from the HIV envelope region suggested that this response is directed, at least in part, at several determinants of the transmembrane portion of the HIV envelope glycoprotein.
  • (17) The authors propose three regular procedures with which they are experienced: repair with a large retromuscular nonabsorbable synthetic tulle prosthesis for extensive epigastric eventrations, fillup aponeuroplasty using the sheath of the rectus abdominis associated with a premuscular patch in case of diastasis or of multiple superimposed orifices and suture associated with a small retromuscular auxiliary patch to treat small incisional hernias.
  • (18) The synthetic S-nitroso-thiol, S-nitroso-N-acetylcysteine, markedly inhibited platelet aggregation with an IC50 of 6 nM.
  • (19) Arteriosclerotic plaques were found in the aorta and arteries of rabbits given homocysteine thiolactone, methionine or homocysteic acid, both parenterally and in a synthetic diet.
  • (20) For each theory, a constraint on preformance is proposed based on interference between the "analytic" and "synthetic" pitch perception modes.

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