BACKGROUND Hypoxemia may occur in young infants with severe acute illnesses or congenital cardiac anomalies, but is not reliably detected on physical exam. Pulse oximetry (PO) can be used to detect hypoxemia, but its application in low-income countries has been limited, and its feasibility in the routine assessment of young infants (aged 0-59 days) has not been previously studied. The aim of th...

Inorganic phosphate is present in milk at a concentration that is severalfold higher than in maternal plasma. In cultured mammary tissues from 12- to 14-day-pregnant mice, the intracellular concentration of (32)PO(4) was six times higher than in the culture medium after a 4-h treatment with (32)PO(4). Of the principal lactogenic hormones [insulin (I), cortisol (H), and prolactin (PRL)], only I ...

Incubation of rat sciatic nerve slices with Krebs-Ringer bicarbonate buffer containing [3H]palmitic acid resulted in the acylation of the PO glycoprotein and a 24 kDa protein of the peripheral nerve myelin. Radioactivity was removed from PO after treating PO with hydroxylamine (83%) and methanolic KOH (97%). These results provided evidence that the radioactivity incorporated into PO was not due...

ganic trace analysis. Pure Applied Chemistry 55: 1943. FiReld FW and Haines PJ (1995) Environmental Analytical Chemistry. London: Chapman and Hall. Luque de CastroMD andDa Silva MP (1997) Strategies for solid sample pretreatment. Trends in Analytical Chemistry 16: 16. Luque de Castro MD and Garcia-Ayuso LE (1998) Soxhlet extraction of solid materials: an outdated techniquewith a promising innov...

‎In this paper we take $mathcal A$ to be the category {bf Pos-S}‎ ‎of $S$-posets‎, ‎for a posemigroup $S$‎, ${mathcal M}_{pd}$ to‎ ‎be the class of partially ordered sequantially-dense‎ ‎monomorphisms and study the categorical properties‎, ‎such as‎ ‎limits and colimits‎, ‎of this class‎. ‎These properties are usually‎ ‎needed to study the homological notions‎, ‎such as injectivity‎, ‎of‎ ‎$S$-...

Antibody to poliovirus type 1 (Po-1) was coupled to peroxidase by use of glutaraldehyde or 4, 4' -difluoro,3, 3' -dinitro diphenyl sulfone. Glutaraldehyde was found to be the superior coupling agent, yielding conjugates that had up to 2.8 x 10(4) enzyme units/ml (75% of total enzyme input). Conjugates migrated as a single band when centrifuged in sucrose density gradients, demonstrating that th...

Phenoloxidase (Po) activity was measusred spectrophotometrically in serum, plasma and haemocytes (HLS) of the freshwater crayfish (Pontastacus leptodactylus). The highest activity was found in HLS suggesting that the haemocytes are the major source of the Po or its proform prophenoloxidase (proPO) in crayfish. Furthermore, the enzyme activity in serum samples was reduced after freezing the samp...

Phenoloxidase (Po) activity was measusred spectrophotometrically in serum, plasma and haemocytes (HLS) of the freshwater crayfish (Pontastacus leptodactylus). The highest activity was found in HLS suggesting that the haemocytes are the major source of the Po or its proform prophenoloxidase (proPO) in crayfish. Furthermore, the enzyme activity in serum samples was reduced after freezing the samp...

Abstract- Three new inorganic-organic hybrid materials based on heteropolyoxometalates, [L-C6H14NO2]3[(PO4)Mo12O36].3H2O (1), [L-C5H10NO2]3[(PO4)W12O36].H2O (2), and [C2H7N2O]3[...