background and objectives: non-sanitary conditions during the drying, transport and storage stages in the production of spices could introduce mycotoxin contamination. the aim of the current study was to determine the concentration of ochratoxin a (ota) in 92 commercial spices (including red pepper, black pepper, turmeric and cinnamon) imported to iran. materials and methods: ota levels were de...

The classification of universal amplifiers presented in this paper places all operational amplifiers and current conveyors known from the literature into a common framework, together with abstract concepts such as the universal active element and the nullor. Our approach is new in that we base it on four-terminal theory, which results in a classification that is more extensive but not more comp...

A method is presented in this paper for the design of a high frequency CMOS operational amplifier (OpAmp) which operates at 3V power supply using tsmc 0.18 micron CMOS technology. The OPAMP designed is a two-stage CMOS OPAMP followed by an output buffer. This Operational Transconductance Amplifier (OTA) employs a Miller capacitor and is compensated with a current buffer compensation technique. ...

This paper presents a novel 0.3V rail-to-rail body-driven three-stage operational transconductance amplifier (OTA). The proposed OTA architecture allows achieving high DC gain in spite of the bulk-driven input. is due to doubled body at first and third stages, gain, gate-driven second stage. bias current each branch accurately set through or mirrors, thus guaranteeing an outstanding stability m...

Table 2: Experimental results for symbolic analysis technique a consequence of exploiting the regularity of symbolic expressions. Experiments also showed that structural regularity of a network can lead to significant model reductions. A limitation of the proposed method is that it is not minimal in terms of the corresponding operations. APTs can also describe reducible operations i.e. multipli...

A Wide Tuning Range Gm-C Continuous-Time Analog Filter is a CMOS operation nal transconductance amplifier for low-power and wide tuning range filter application is proposed. The transconductor can work from the weak inversion region to the strong inversion region to maximize the transconductance tuning range. The trasconductance can be tuned by changing its bias current. A fifth-order Elliptic ...

Ochratoxin A (OTA) is a mycotoxin produced in corn, rice, and flour. It is a major concern for animal and human health. The purpose of this study was the evaluation of OTA contamination in bread samples gathered from bakeries, in different temperatures and durations of heating. In this study, 32 samples (4 samples of flour and 28 samples of bread) were randomly collected from different bakeries...

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...

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 ...