Historically, to describe numbers, some cultures used bases much larger than our usual base 10, namely, 20, 40, and 60. There are explanations for 60, there is explanation but 40—used in medieval Russia—remains largely a mystery. In this paper, we provide possible all these three bases, an based on the natural need manage large groups of people. We also speculate why different bases.

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the crystal structure of the title schiff base complex is obtained by single-crystal x-ray diffraction data.the solid state structure determination reveals that the coordination geometry around the copper(ii) center istetrahedrally distorted square-planar. the crystal packing shows one dimensional infinite chains which arisesfrom the intermolecular interaction and stabilize the crystal packing.

abstarct background: base deficit is a non-respiratory indicator of acid base status that evaluates the severity of shock at the cellular level. base deficit results from cellular metabolism of pyruvate under anaerobic conditions. in this situation, base deficit is a sensitive marker of the magnitude of anaerobic metabolism and tissue oxygen deficit [1]. several studies have shown a strong posi...

conclusions specimen adequacy and diagnosis of inflammatory reaction were better in liquid base smear and convention smear, respectively. results specimen adequacy and smear quality were significantly better in liquid base sampling (p = 0.03); presence of benign cellular changes was not different between the two groups (p = 0.389). diagnosis of bacterial vaginosis was significantly better with ...

the vo(iv) complexes of tridentate ono schiff base ligands derived from 2- aminobenzoicacid and salicylaldehyde derivatives were synthesized and characterized by ir, uv–vis and elemental analysis. electrochemical properties of the vanadyl complexes were investigated by cyclic voltammetry. a good linear correlation was observed between the oxidation potentials and the electron-withdrawing charac...

The problem of decomposing a pixel grid into base-monotone regions was first studied in the context of image segmentation. It is known that for a given n ⇥ n pixel grid and baselines, one can compute in O(n) time a maximum-weight region that can be decomposed into disjoint base-monotone regions [Chun et al. ISAAC 2009]. To complement this fact, we first show the NP-hardness of the problem of op...