The development of the information society is characterized by the introduction of new electronic services available through different types of technologies and devices. Publicly available electronic communications services create new possibilities for users, governments and businesses. However, at the same time, these services have large capacities and possibilities for processing personal dat...

A low distortion low-voltage BiCMOS OTA with wide gm adjustment range and constant input range is presented. It is based on a highly linear voltage-to-current converter input stage merged with translinear loops that implement linear electronically programmable current mirrors. Experimental results are provided that confirm the characteristics of the proposed OTA with a single 1.7V supply, 1.2V ...

A high-performance operational transconductance amplifier (OTA) is proposed. In order to increase DC gain, gain bandwidth, and the slew rate under low standby quiescent current, the proposed OTA has the dynamic output current scaling and class AB operation. Under the condition of 250 A quiescent current and a 30 pF load capacitance with a step voltage from 1.2 to 1.5V at a rise time of 1 nsec i...

mycotoxins are small, toxic chemical products produced as secondary metabolites by a few fungal spices that readily colonise crops and contaminate them with toxins in the field or after harvest. in this study a liquid chromatographic method was developed for the simultaneous determination of aflatoxins (afs) (b 1 , b 2 , g 1 , and g2), ochratoxin a (ota) and zearalenone(zea) toxins in wheat. fo...

The aim of this work was to evaluate the fate of ochratoxin A (OTA) content from must to wine during the red wine making process in a pilot scale vinification. The study was done using musts obtained from two red grape varieties (Bonarda and Tempranillo) artificially contaminated with two OTA levels. A duplicate set of tanks of 100 I each was established for each must (Bonarda and Tempranillo)....

A silver nanoparticle (AgNP)-based fluorescence-quenching lateral flow immunoassay with competitive format (cLFIA) was developed for sensitive detection of ochratoxin A (OTA) in grape juice and wine samples in the present study. The Ru(phen) 3 2 + -doped silica nanoparticles (RuNPs) were sprayed on the test and control line zones as background fluorescence signals. The AgNPs were designed as th...

Ochratoxin A (OTA) is a mycotoxin naturally occurring in different foods. OTA is arguably a risk factor for Balkan endemic nephropathy (BEN). The aims of this study are to (1) test the OTA-BEN association in BEN-groups and controls and (2) determine whether urine β2-microglobulin, a marker of impaired ability of the kidneys to re-absorb, is related to OTA. BEN patients had significantly higher ...

Mould and mycotoxin contamination in food OTA toxicity Ochratoxin A producers Occurrence of Ochratoxin A Effect of water activity on OTA production OTA destruction during roasting of coffee Levels and distribution of OTA in green coffee (contamination, survey) Effect of processing and handling on OTA content of green coffee Effect of caffeine on OTA production Socioeconomic impact of coffee pro...