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Hanke, A. (author), Hamann, E. (author), Dharma, R. (author), Geelhoed, J.S. (author), Hargesheimer, T. (author), Kraft, B. (author), Meyer, V. (author), Lenk, S. (author), Osmers, H. (author), Wu, R. (author), Makinwa, K.A.A. (author), Hettich, R.L. (author), Banfield, J.F. (author), Tegetmeyer, H.E. (author), Strous, M. (author)Sandy coastal sediments are global hotspots for microbial mineralization of organic matter and denitrification. These sediments are characterized by advective porewater flow, tidal cycling and an active and complex microbial community. Metagenomic sequencing of microbial communities sampled from such sediments showed that potential sulfur...journal article 2014
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Wu, R. (author), Chae, Y. (author), Huijsing, J.H. (author), Makinwa, K.A.A. (author)This paper presents a 20-b read-out IC with ±40-mV full-scale range that is intended for use with bridge transducers. It consists of a current-feedback instrumentation amplifier (CFIA) followed by a switched-capacitor incremental ΔΣ ADC. The CFIA's offset and 1/ <i>f</i> noise are mitigated by chopping, while its gain accuracy and gain drift are...journal article 2012
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Wu, R. (author), Makinwa, K.A.A. (author), Huijsing, J.H. (author)This paper presents a chopper instrumentation amplifier for interfacing precision thermistor bridges. For high CMRR and DC gain, the amplifier employs a three-stage current-feedback topology with nested-Miller compensation. By chopping both the input and intermediate stages of the amplifier, a 1 mHz 1/f noise corner was achieved at an input...journal article 2009