The development of wave solid-state gyroscopes (VTG) is one the promising areas gyroscopic angular velocity sensors. VTG from standpoint manufacturing technology, tuning and control systems, as well accuracy characteristics, has a number advantages compared to other types gyroscopes. When developing VTG, they strive reduce gyroscope's own care, zero signal bias, non-linearity scale factor in op...

Riboflavin binding protein (ribBP) is an essential component of chicken eggs; it supplies the oocyte (i.e. yolk) and egg white with sufficient amounts of the vitamin riboflavin to sustain embryonic development until hatching. There are three forms of ribBP in the laying hen; synthesized by the liver under the control of estrogen, it enters the serum (sribBP) and is delivered to yolk where it be...

In sea bass (males and non-vitcllogcnic females) estradiol (E2) treatment caused the appcarnnce in the bloodstream of a new protein that was identified as the vitellogenin (VTC) moleculc for this teleost spccies. The molecular weight of the sca bass VTG (445 kDa) and its amino acid composition was similar to that of other teleosts. VTC was purified by doublcstep chromatography and then used to ...

The aim of the present study was to elucidate how full life-cycle exposure to estrogens impacts zebrafish development and reproduction, compared to partial life-cycle exposure only, and whether the estrogen-induced effects in zebrafish are reversible or irreversible. Zebrafish were exposed in a flow-through system to an environmentally relevant concentration (3 ng/L) of the synthetic estrogen 1...

Various chemical and biological measures were determined in carp (Cyprinus carpio) sampled from seven sites along the Cuyahoga River, Ohio; from the relatively pristine headwaters to the lower portion heavily polluted from various industrial, urban and wastewater treatment plants (WWTP). Levels of nonylphenol (NP), nonylphenol ethoxylates (NPEs; NP1EO, NP2EO) and total NPEs (NP plus the NPEs) i...

The modern internal combustion engine (ICE) has to meet several requirements. It be reliable with the reduced emission of pollutant gasses and low maintenance What is more, it efficient both at low-load high-load operating conditions. For this purpose, a variable turbine geometry (VTG) turbocharger used provide proper acceleration exhaust gases Such solution also In paper, result an unsteady, t...

Chemical risk assessment is fraught with difficulty due to the problem of accounting for the effects of mixtures. In addition to the uncertainty arising from chemical-to-chemical interactions, it is possible that environmental variables, such as temperature, influence the biological response to chemical challenge, acting as confounding factors in the analysis of mixture effects. Here, we invest...

The Xenopus homologue of hARH (human autosomal recessive hypercholesterolemia) was identified in a screen for vegetally localized RNAs. xARH contains a N-terminal phosphotyrosine binding (PTB) domain that is 91% identical to that of the human gene, a domain previously shown to bind the LDL receptor family members. Maternal xARH, unlike hARH, is present as two transcripts that differ in their 3'...

Biomonitoring is currently performed at two levels, assessing exposure to pollutants and effects monitoring by bioassays. As an example for the first approach, vitellogenin (VTG) in male fish of Abramis brama as an endpoint for estrogen exposure is discussed. However, similar changes of VTG or VTG-like proteins in the hemolymph of mussels could not be detected. Enzyme-linked receptor assays for...

Female squirrelfish (Fam. Holocentridae) can accumulate and temporarily sequester copious amounts of zinc (Zn) in their livers. There, it is initially compartmentalized before a subsequent, estrogen-triggered redistribution to the ovaries. Here we show that cellular uptake of Zn is also influenced by estrogen signaling, and that estrogen increases concentrations of the plasma Zn-binding protein...