Major histocompatibility complex (MHC) genes play an important role in the immune response of vertebrates. Allelic polymorphism and evolutionary mechanism of MHC genes have been investigated in many mammals, but much less is known in teleosts. We examined the polymorphism, gene duplication and balancing selection of the MHC class II DAB gene of the half-smooth tongue sole (Cynoglossus semilaevi...

AIMS To develop and assess a cytochemical technique for the light microscopical detection of oxidase activity in pathogenic bacteria. METHODS Live bacterial cells were deposited on to aminopropylsilane treated glass coverslips by centrifugation, dried, then reacted with either 1% (w:v) n,n,n',n'-tetramethyl-p-phenylene diamine (TPD) or 5 mM diaminobenzidine (DAB) at 37 degrees C. The preparat...

We have carried out an analysis of whether blood IgG antibodies can protect humans from oxidative stress by oxidizing different harmful compounds. A somewhat unexpected result was obtained. We show here for the first time that healthy human sera IgGs with the peroxidase (in the presence H2O2) efficiently oxidize different compounds: 3,3'-diaminobenzidine (1; DAB), 2,2'-azino-bis(3-ethylbenzothi...

This paper presents the field trials and the coverage measurements carried out in urban areas in the first experimental terrestrial DAB (T-DAB) network at L-Band in Spain. The trials focused on obtaining the parameters that characterize the propagation channel for different urban environments. The results will be discussed taking into consideration recommended parameters and values given by int...

During 3 research cruises in the southern North Sea between 1986 and 1988 dab Limanda l imanda L. were examined for liver anomalies. Macroscopic and microscopic descriptions include different color irregularities and neoplastic changes. The frequency of the various liver lesions observed were calculated, the influence of fish length, sex, and season on their occurrence studied, and their geogra...

Reliable file transfer is important in broadcast networks. In this paper, we have investigated if it is useful to extend the DAB standard with Fountain codes. To evaluate this, results from measurements in a live Single Frequency Network (SFN) were used. Our results show that the existing error correction algorithms provide already reliable file delivery, so there is no need to extend the DAB s...

Digital Media Technologies offer enhanced multimedia signal broadcasting and description of the signal on content. Digital Audio Broadcasting (DAB) is a media standard with extended multimedia capabilities, offering novel services to users worldwide. Each digital broadcasting standard though, cannot be separately viewed from the development of Internet radio broadcasting. In this paper we intro...

The potential genotoxicity of the rodent liver carcinogen p-dimethylaminoazobenzene (DAB) was evaluated in compliance with the guidelines for genotoxicity studies of drugs (Notification No. 1604, Nov. 1, 1999, Ministry of Health and Welfare, Japan) and the OECD guidelines for testing chemicals. DAB was clearly positive in both the bacterial reverse mutation test (Ames test) and in vitro chromos...

This work deals with design, modeling and simulation of the PI & the Fuzzy controlled DAB DC to DC converter systems. Open loop system is simulated with step change in input voltage. The output voltage in closed loop system is regulated using PI and Fuzzy controllers. The response of these two systems are compared. This converter has advantages like low EMI,less switching loss and improved dyna...

In the following paper the perspectives of spatial development of digital broadcasting in Slovenia will be presented. Digital broadcasting will be considered in two main streams – digital audio broadcasting and digital video broadcasting, both in the terrestrial mode. In the field of digital radio, T-DAB frequency block allotments were already coordinated at the Wiesbaden planning conference in...