Recently, a paper was published in which the ion-exchange capacity of gels was altered by using together dHBA
(ion-exchange moiety containing monomer) and resorcinol .
Figure 3 showed that the hypothalamic levels of 2,3-DHBA and N[O.sub.x.sup.-] in the (HSDR + V) rats were significantly higher at 60 minutes after the start of heat exposure than in the (NTDR + V) rats (~180% versus ~100 mmHg for DHBA
; ~9.6 [micro]M versus ~2.6 [micro]M for N[O.sub.x.sup.-]; P < 0.05).
Melatonin Reduces Heat-Induced Increased Levels of Glutamate, Lactate-to-Pyruvate Ratio, Glycerol, Nitrite (NO), and Dihydroxybenzoic Acid (DHBAs
) in the Hypothalamus.
In addition, DHBA
and DHBG [collectively referred to as DHB (G)] are precursors of the catecholate siderophore bacillibactin which is the cyclic trimeric lactone of 2,3-dihydroxybenzoyl-Gly-Thr (Fig.
For the estimation of neurotransmitter levels the dissected brain regions were weighed and an internal standard DHBA
(25 ng/mL) was added to each sample.
For each run, serotonin and DHBA
standards were processed to identify retention times and to confirm the serotonin elution peak from samples.
Because we knew that the chromatographic separation of 3-O-methyldopamine, the peak with the retention time of 13 min, should contain 2 different substances, DHBA
and 3-O-methyldopamine, we repeated the analysis of 3-O-methyldopamine with increased resolution of our method and a new column.
Prior to the interventions, the outdoor air supply rate to each classroom was determined to be 180 [m.sup.3]/h (105.9 cfm), although the ventilation system was designed for an outdoor air supply rate of 600 [m.sup.3]/h (353.1 cfm) to each classroom to meet the requirements of the Danish Building Regulations (DHBA
1995) for a classroom occupied by 30 persons.
trabeum, 2,3-dihydroxybenzoic acid (DHBA
) (Goodell et al.
The stock solutions of serotonin, 5-hydroxytryptophan, dopamine, and of the internal standard 3,4-dihydroxybenzylamine (DHBA
), all from Fisher Scientific, were prepared in 0.1 N perchioric acid at a concentration of 1 mM and stored at 4 [degrees]C.
), Port Chester, N.Y., a leading technology assessment firm, has published the 2001 release of its Linux Function Review, a comprehensive functional evaluation of Linux as a commercial server operating-environment.
) queried a limited but representative sample of product developers about their platform preference.