Many artificial synthetic colorants, which have widely been used in foodstuff, dyestuff, cosmetic and pharmaceutical manufacturing processes, comprise various hazardous effects. To counter act the ill effect of synthetic colorants, there is worldwide interest in process of development for the production of pigments from natural sources. The utilization of natural pigments in foodstuff, dyestuff...

A new luminescent coordination polymer, EuH(L)(2)(NO(3))(2) (EuL, HL = 2-(2-pyridin-2-yl)quinoline-4-carboxylic acid), has been solvothermally synthesized, and its framework of uncoordinated pyridyl rings was exploited for the binding and specific sensing of HCl via a protonation effect. The protonation effect changes the energy of the excited state of the ligands, rendering them unable to act ...

The medical industry is challenged by the presence of microorganisms and the negative effects they cause. Deterioration, defacement and odors are all dramatic effects which occur from the microbial contamination of surfaces as varied as carpeting and medical non-woven fabrics. These surfaces can also act as a microbial "harbor", as most offer ideal environments for the proliferation of microorg...

Outside of pregnancy excessive salt consumption is known to be harmful being linked to increased blood pressure and cardiovascular disease. However, pregnancy represents a major change to a woman's physiology resulting in an intimate adaptation to environmental conditions. It is now becoming apparent that salt is essential for a number of these changes during pregnancy including haematological,...

INTRODUCTION The aim of this work was to examine the influence of quercetin on chronic intoxication of rats with ammonium fluoride. A 1:1 mixture of quercetin 8,5' disulfonic acid sodium salts (Na2QDSA): NaQSA-5' and NaQSA-8 (Figure 1), synthesized at the Department of Inorganic Chemistry, Technical University of Rzeszów, was used. Pharmacological investigations have demonstrated the diverse ac...

Recent episodes of severe air pollution in eastern Asia have been reported in the scientific literature and news media. Therefore, there is growing concern about the systemic effects of air pollution on human health. Along with the other well-known harmful effects of air pollution, recently, several animal models have provided strong evidence that air pollutants can induce liver toxicity and ac...

Safe and nutritious food in adequate amounts is required for the sustenance of life and the promotion of good health. However, food provides an environment for microbial growth and, when contaminated, can act as a vector for bacteria, viruses, parasites, and prions, causing food poisoning. Besides, it is often contaminated with toxic chemicals present naturally and/or mixed accidentally or inte...

We describe an approach to logic programming where the execution of a pure logic program is ordered on “temporal” values in the program. The resulting programs are relational and avoid a premature commitment to data structures. This is a strong advantage in a programming language. We present the programming language Starlog as an example of this approach and give a summary of its denotational a...

Many current approaches to statistical language modeling rely on independence a.~sumptions 1)etween the different explanatory variables. This results in models which are computationally simple, but which only model the main effects of the explanatory variables oil the response variable. This paper presents an argmnent in favor of a statistical approach that also models the interactions between ...

This article traces the unstable semantics of use cases from Jacobson to UML 1.3. The UML 1.1 metamodel formally defined the «uses» and «extends» use case relationships as stereotypes of generalisation, yet both received interpretations that varied between inheritance and composition, reflecting a large degree of confusion among developers. The recently revised UML 1.3 has quietly dropped these...