für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

This paper describes the design and simulation of an innovative monolithic active balun integrated with low noise amplifier. The Single-ended-to-differential signal transformation circuit comprises a differential signal generation circuit, which is able to receive a single-ended signal and generate a pair of signals having a 180o (differential) relationship phase. The fully integrated circuit w...

The preparation, for the first time, of the deprotonated complexes of oxamic acid with Ce(III), Pr(III), Nd(III), Sm(III), Eu(III), Dy(III), Ho(III ) and Yb(III ) is reported. Properties, analytical results, conductometric measurements, magnetic moments and spectral data (IR and diffuse reflectance spectra) are discussed in terms of possible structural types and the nature of the bonding. Oxami...

This study evaluated fluctuations in the output signal of a densimeter, an in situ suspended-sediment measurement device based on a very sensitive differential pressure transducer. Although the densimeter produced accurate less than 10% error results in the laboratory for concentrations of 10–1,000 mg/L, there was a much larger fluctuation in the field test output signal. These fluctuations wer...

The article proposes the further development of a method reducing error measuring local changes in electrical conductivity electrolyte solutions caused by change background medium. Such an occurs differential conductometric biosensors with working and reference transducers, if their parameters differ significantly. In contrast to previously known, described takes into account influence near-ele...

This paper presents the design and simulation of a 5GHz monolithic low-noise amplifier integrated with an active Balun. Intended to WLAN applications, the fully integrated circuit was implemented in a 0.18μm CMOS technology. The simulations, optimized to noise performance, gain and minimum differential phase and magnitude error, were performed with BSIM3 model. Circuit simulations present 23dB ...

• Two competing and opposing processes control the sensing response of NiO to ethanol. surface orientation strongly determine its interaction with ethanol at RT. Charge transfer adsorbed molecules dominates in anomalous response. Ethanol decomposition is responsible for normal The shows faster dynamics better sensitivity Conductometric gas sensors based on metal oxide semiconductors (MOS) usual...