The objective of this study was to investigate the effect of density, duration and the use of additives to the water during the transportation of juvenile tambaqui (Colossoma macropomum) and use of this data to establish a safe transportation protocol for the species. The tested products and dosages were: salt (1000, 2000 and 3000 mg/L), gypsum (100, 300 and 500 mg/L) and benzocaine (10, 20 and...

Local anesthetics (LAs) are noncompetitive antagonists of batrachotoxin (BTX) in voltage-gated Na+ channels. The putative LA receptor has been delineated within the transmembrane segment S6 in domain IV of voltage-gated Na+ channels, whereas the putative BTX receptor is within segment S6 in domain I. In this study, we created BTX-resistant muscle Na+ channels at segment I-S6 (micro1-N434K, micr...

In the crystal structure of the title diaryl-ethyl-ene compound, C(17)H(10)F(6)O(2)S(4), the two 3-thienyl substituents are aligned at 44.9 (1) and 40.2 (1)° with respect to the -C-C=C-C- fragment of the central cyclo-pentenyl ring. The five-membered cyclo-pentenyl ring adopts an envelope conformation. The flap atom of this ring and the two F atoms bonded to it are disordered over two positions...

Drug abuse and drug dependence causes drastic medical complications in the body that needs to be averted. New psychoactive drug combinations are emerging globally; pose a severe threat to mankind. An abused formulation sold online under tradename ‘Magic’, was confirmed to containBenzocaine & Caffeine by GC-MS study. In purview of the OECD guidelines, the assessment of sub-chronic& chronic toxic...

Polyethylated carborane monoanions based on [closo-CB11H12]- with up to five B-ethyl groups can be prepared by a sequential Rh-catalysed dehydrogenative borylation then hydrogenation.

In this automated procedure for quantifying biotinidase activity in human serum, a manual colorimetric method that measures conversion of the enzyme's artificial substrate N-biotinyl p-aminobenzoate was modified for use with a Technicon AutoAnalyzer II. The intra-run replicate precision (CV) was 2.1% and the day-to-day CV was 4.6% for quality-control sera. Results were linearly related to bioti...

The photodegradation of the azobenzene chromophore DR1 {4-[N-ethyl-N-(2-hydroxyethyl)amino]-4(?)-nitroazobenzene]} incorporated as a side chain or as a guest in a poly(methyl) methacrylate host has been evaluated as a function of wavelength, temperature, and the atmospheric environment. The effects of these variables on the lifetime of DR1-based electro-optic devices is quantified.