A porous cellulose tape impregnated with a coloring solution that includes hydroxylamine sulfate, Methyl Yellow (pH indicator; pH 2.9-4.0, red-yellow), glycerin and methanol has been developed to provide a highly sensitive means of detecting formaldehyde gas. Formaldehyde reacts with hydroxylamine ...
Deoxyribonucleic acid in eukaryotes wraps around the histone octamer to form nucleosomes1, the fundamental unit of chromatin. The N termini of histone H4 interact with nearby nucleosomes and play an important role in the formation of high-order chroma
12. The average depth of the water column in the ocean is 4000 m, but photosynthesis only occurs in the top 200 m reached by sunlight (Fig.1a)12. This means that the distance from the primary production to ultimate oxidation exceeds thousands...
Agar polymers synthesized by species of the genus Gracilaria constitute a complex mixture of molecules, containing several extremes in structure. Sulphate
Replacement of methyl group in compound 1 with Bromine atom resulted 3 with increased π…π stacking interactions. The unexpected concomitant polymorphic forms of compounds 3 with details of the crystal structures and supramolecular features are presented. In addition, Hirshfeld surface and 2D ...
The synthesis of final compounds 9(a-f) and 10(a-f) is outlined in Scheme 1. 1-Boc-4-piperidinone was reacted with different Grignard reagents to yield the corresponding 1-Boc-4-piperidinol derivatives (1c and 1e). Refluxing (L) leucine methyl ester hydrochloride with trichloromethyl chl...
The crystal structures of (l-y)[(1-x)CaWO₄-xLi₂WO₄]-yEu₂O₃ phosphors have been characterized using XRD data and rietveld refinement. 展开 关键词: (1-y)[(1-x)CaWO₄-xLi₂WO₄]-Eu₂O₃ phosphor PL characteristics Red luminescence Crystal structure ...
Our results from TEM and in situ CLSM strongly indicate the existence of different arrangements of pea and bean thylakoid membranes. In pea, larger appressed thylakoids are regularly arranged within chloroplasts as uniformly distributed red fluorescent bodies, while irregular appressed thylakoid membranes...
RESULTS: Solvent-exposed children had significantly higher error scores on red-green and blue-yellow color discrimination, as well as poorer visual acuity compared with the control group. Exposure index (an estimated measure of exposure intensity) was not significantly related to color discrimination ...
1). Treatment of the native polysaccharide (Fig. 1A) with dilute sodium hydroxide results in loss of methyl and carbonyl carbon signals, simplifying the spectrum (Fig. 1B). The alkali treated polysaccharide has two chemical shifts in the anomeric region at 98.5 and 100 ppm, two carbonyl ...