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The single rRNA operon (arnS-arnL) of the hyperthermophilic archaeon Aeropyrum pernix K1 was sequenced. The DNA sequence data and detailed RNA analyses disclosed an unusual feature: the presence of three introns at hitherto undescribed insertion positions within the rRNA genes. The 699-nucleotide (nt) intron Ialpha was located at position 908 (Escherichia coli numbering [H. F. Noller, Annu. Rev...

We measured aortic and coronary sinus dopamine (DA), epinephrine (E), and norepinephrine (NE) in eight patients with cardiac ischemia (I) and eight control subjects (C). Samples were taken at rest (73 +/- 3 beats/min in C and 68 +/- 3 beats/min in I) and during coronary sinus pacing to peak rates (144 +/- 4 beats/min in C and 136 +/- 6 beats/min in I). Arterial NE was higher in the ischemic pat...

Throughout G is a compact Lie group which is topologically cyclic with dense generator g. Let N and M be smooth G manifolds without boundary and Fez M a closed invariant submanifold. All manifolds are oriented and G preserves orientation. Let f :N-^M be a proper G map. When is ƒ properly G homotopic to a map y which is transverse regular to Fc iM, written y(\\Y! We introduce obstructions which ...

Th e objective of this paper was to show diff erences among qualitative parameters of commercially produced Slovak fi ne and wholemeal wheat fl ours prepared from Triticum aestivum L. (common wheat) and Triticum aestivum ssp. spelta L. (spelt wheat). Th e selected chemical parameters (protein, starch, ash, glucose, fructose, sucrose, maltose, pH, lactic acid, acetic acid, citric acid, succinic ...

A substantially improved purification of Escherichia coli NADH-dependent nitrite reductase was obtained by purifying it in the presence of 1 mM-NO2and 10,uM-FAD. The enzyme was obtained in 20% yield with a maximum specific activity of 1.04 kat . kg-1: more than 95% of this sample subjected to sodium dodecyl sulphate/polyacrylamide-gel electrophoresis migrated as a single band of protein. This h...

although in principle the benefit and loss resulted from partnership is to be taken into consideration in private relationships proportionate to the parties’ shares, prediction of stipulating more benefit or exempting all or part of the loss in the company’s contracts, with respect to the existing necessities and the need for maximum participation, is a common practice. whereas, the article 575...