Polymerase chain reaction (PCR) is subject to false negative results. Samples of fungi with the genes of interest (e.g. a disease or mycotoxin) may be categorized as negative and safe as a consequence. Fungi are eukaryotic organisms that are involved in many fields of human activity such as antibiotic, toxin and food production. Certain taxa are implicated in human, animal and plant diseases. H...

1 Summary Practical database query languages are usually equipped with some aggregate functions. For example, \\nd mean of column" can be expressed in SQL. However, the manner in which aggregate functions were introduced in these query languages leaves something to be desired. Breazu-Tannen, Buneman, and Wong 3] introduced a nested relational language NRC(=) based on monads 16, 24] and structur...

Introduction The development of electronic information systems and tools will create a demand for new services as well as opportunities for new business areas in the future society. This society, including all the inhabitants, the industries, the service branch and the trade and market organisations , will find it evident to make use of the digital information and related functions in a large n...

It had been known that narcotics are more soluble in fats and oils than in water. With this in mind, yon Bibra and Hatless, 1 in 1847, carried on a series of experiments on rabbits. Half the animals were anesthetized, and the other half were used as controls. All the animals were killed and the fat content of the brains and livers was determined quantitatively by extraction with alcohol and eth...

The most negative effects caused by noise exposure related to the hearing system are well known and may produce professional or even permanent deafness. Since these effects have very important influence on worker’s health and well-being, it is necessary to evaluate the hearing loss caused by occupational exposure to noise in order to propose preventive solutions. A large number of compensation ...

Test statistics for sphericity and identity of the covariance matrix are presented, when the data are multivariate normal and the dimension, p, can exceed the sample size, n. The test statistics are shown to follow an approximate normal distribution for large p, also when p >> n. The statistics are derived under very general conditions, particularly avoiding any strict assumptions on the traces...

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