The aim of this paper is to give some connections between the structure of an abelian finite group and the structure of its subgroup lattice. Let (G, +) be an abelian group. Then the set L(G) of subgroups of G is a modular and complete lattice. Moreover, we suppose that G is finite of order n. If L n is the divisors lattice of n, then the following function is well defined: ord : L(G) −→ L n , ...

This paper continues Nebel and Burckert’s investigation of Allen’s interval algebra by presenting nine more maximal tractable subclasses of the algebra (provided that P # NP), in addition to their previously reported ORD-Horn subclass. Furthermore, twelve tractable subclasses are identified, whose maximality is not decided. Four of them can express the notion of sequentiulity between intervals,...

Studies of optical rotatory dispersion (ORD) and circular dichroism (CD) are reported on pepsinogen, carbamyl-, and succinylpepsinogen. From the ORD measurements in the wave length range of 600 to 300 rnp as functions of urea, temperature, and pH, it was shown that the macromolecular conformation of the three proteins differs markedly. On replacing the e-NH2 groups of the lysine residues of pep...

OLIGONUCLEOTIDE STUDIES, PART II. OPTICAL ROTATORY DISPERSION OF TWO PAIRS OF SEQUENCE ISOMERS OF TRINUCLEOTIDES 1) Y. Inoue, S. Aoyagi and K. Nakanishi Department of Chemistry, Tohoku University, Sendai, Japan. (Received in Japan 13 June 1967) Optical rotatory dispersion (ORD) is understood as the most powerful physical method in the characterization of the conformational structures of oligoan...

INTRODUCTION AND OBJECTIVES Occult renal disease (ORD) is a condition that characterizes the early stages of renal failure and which cannot be detected by routine monitoring. The aims of this study were to determine the prevalence of ORD in hypertensive patients attending cardiology outpatient clinics and to identify its relationship with specific cardiovascular risk factors or treatment. MET...

1.1. The p-adic measure. Let p be a prime number. We consider a field K with a valuation ord : K× → Z, extended to K by ord(0) = ∞. We denote by OK the valuation ring OK = {x ∈ K|ord(x) ≥ 0} and we fix an uniformizing parameter $, that is, an element of valuation 1 in OK . The ring OK is a local ring with maximal ideal MK of OK generated by $. We shall assume the residue field k := OK/MK is fin...

OBJECTIVE Patients with congenital adrenal hyperplasia due to P450 oxidoreductase (POR) deficiency (ORD) present with disordered sex development and glucocorticoid deficiency. This is due to disruption of electron transfer from mutant POR to microsomal cytochrome P450 (CYP) enzymes that play a key role in glucocorticoid and sex steroid synthesis. POR also transfers electrons to all major drug-m...

The immunodominance of Mycobacterium tuberculosis proteins malate synthase (MS) and MPT51 has been demonstrated in case-control studies with patients from countries in which tuberculosis (TB) is endemic. The value of these antigens for the serodiagnosis of TB now is evaluated in a cross-sectional study of pulmonary TB suspects in the United States diagnosed to have TB, HIV-associated TB, or oth...

Existing vertex-based operational rate-distortion (ORD) optimal shape coding algorithms use the shortest absolute distance (SAD) or alternatively either the distortion band (DB) or tolerance band (TB) as their distortion measuring technique. Each approach however can lead to inaccurate distortion measurements, though these can be avoided by employing the accurate distortion measurement techniqu...