In his study [7] on quartic integrals, Moll met a specialized family of Jacobi polynomials. Moll conjectured that the corresponding coefficient sequences are log-concave. In this paper we settle Moll’s conjecture by a non-trivial usage of computer algebra.

The foregone studies have shown that nicotinic acid cannot produce noticeable reductive signal at carbon-based electrodes without appropriate modification of the electrode. This is an obvious reason that mercury is known as the main electrode material for electro-reduction of nicotinic acid. In this study, it has been shown that it is possible to create a remarkable reduction signal for NA at a...

Our experiments show that octopamine receptors are present on the developing follicles of an insect, Rhodniusprolixus. Application of D,L-octopamine decreased the duration and overshoot of calcium-dependent action potentials (APs), and increased the intrafollicular concentration of cyclic AMP. The threshold concentration of D,L-octopamine for the reduction in electrical excitability was between...

Acibenzolar-S-methyl (ASM) is a novel fungicide applied for crop protection. A renewable silver amalgam film electrode was used for the determination of ASM in pH 3.4 Britton Robinson buffer using square wave adsorptive stripping voltammetry (SWAdSV). The parameters of the method were optimized. The electroanalytical procedure made possible to determine ASM in the concentration range of 5 10 –3...

The facile electro-oxidation of diuron occurred at a glassy carbon electrode (GCE) modified with polymerized nickel tetraamino-phthalocyanine (NiTAPc), containing O-Ni-O bridges represented as poly-Ni(OH)TAPc-GCE. The oxidation of diuron occurred at a potential which is 60mV less than that of poly-NiTAPc (without O-Ni-O bridges) and was accompanied by enhanced catalytic currents. The catalytic ...

Мета статті — проаналізувати історію створення Станіславом Людкевичем трьох концертів для фортепіано з оркестром, зокрема Концерту a-moll; дослідити подальшу виконавську проблематику цього твору; з’ясувати місце у творчості композитора та його жанрову унікальність. Методи дослідження ґрунтуються на історичному, джерелознавчому аналітичному методах. Історичний метод дає можливість висвітлити про...

Data on the variation of crop volumes with time for blowflies (Phormia regina Meigen) fed various volumes and concentrations of fructose or sucrose (from Gelperin, 1966, and Edgecomb et al. 1987) were used to characterize energy processing rates to test the assumption of food energy addivity of optimal foraging theories. Six regression models (linear, square root, cube root, hyperbolic, inverse...

Febrile convulsions in childhood constitute one of the commonest medical emergencies in paediatric practice. Although the aetiology, clinical picture, treatment and possible sequelae are described and discussed in the standard paediatric literature, little or no mention is made of the exact cerebrospinal fluid (C.S.F.) composition in this condition (Sheldon, 1951; Grulee and Eley, 1952; Collis,...

A new Kinetic Spectrophotometic method for the Determination of trace amount Sulfacetamide Drug into real samples has been described based with silver nanoparticles starch-capped sensor, by sodium borohydride. The reaction is followed spectrophotometrically by measuring the decrease in the absorbance at 347.5 nm. 1.0×10-2 molL-1 silver nanoparticles starch-capped sensor, 2.0×10-3 mol L-1 sodium...