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17 lectures on Fermat numbers : from number theory to geometry
Foreword by Alena Solcova.- Table of Contents.- Preface.- Glossary of Symbols.- Introduction.- Fundamentals of Number Theory.- Basic Properties of Fermat Numbers.- The Most Beautiful Theorems on… Expand
Combination of high-performance liquid chromatography and radioimmunoassay for the measurement of urodilatin and alpha-hANP in the urine of healthy males.
Urodilatin (ANP-(95-126)), a natriuretic peptide in urine, and alpha-hANP (ANP-(99-126)) are crossreactive in the radioimmunoassay of alpha-hANP (ANP-RIA). We therefore developed a method to separate… Expand
Urodilatin and atrial natriuretic peptide are present in the urine of healthy neonates and young infants.
Urine sampling has been proposed as noninvasive monitoring of plasma atrial natriuretic peptide (ANP) in neonates, assuming urine contains only filtered plasma ANP. Recently, urodilatin, another… Expand
Oxidation of ferrous sulphate in neutral and weakly alkaline solutions
Reduction Dehydration of Iron Oxide Hydroxide by iron metal in aqueous medium
The reductive dehydration of iron hydroxide (FeOOH) by iron metal in aqueous solutions of ferrous sulphate was found to occur. These reactions of α, β, γ FeOOH and Fe(OH)3 · nH2O respectively were… Expand
FERMAT AND MERSENNE NUMBERS IN PEPIN'S TEST1
(1.1) Fm = ¿T + 1 for m = 0, 1, 2 , . . . are prime. The numbers Fm are called Fermât numbers after him. If Fm is prime, we say that it is a Fermât prime. The first five members of sequence (1.1) are… Expand
Formation and Crystallization of Fe(III) Hydroxides. Influence of precipitation temperature and the nature of the starting Fe(III) salt on Fe(III) hydroxide crystallization in alkaline medium
It is shown that amorphous precipitates of Fe(III) hydroxides are composed of two phases, namely weakly magnetic primary particles and ferrimagnetic fine-grained particles. The relative proportion of… Expand
FORMATION AND CRYSTALLIZATION OF IRON(III) HYDROXIDES. 1. INFLUENCE OF PRECIPITATION TEMPERATURE AND THE NATURE OF THE STARTING IRON(III) SALT ON IRON(III) HYDROXIDE CRYSTALLIZATION IN ALKALINE MEDIUM
Preparation of α-Fe2O3 (Hematite) by oxidation precipitation of aqueous solutions of iron(II) sulphate