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532 results on '"Singh, Suren"'

2. Feedstocks and Cases III: Biohydrogen From Algal Biomass (Macro and Microalgae)

Author

Bhagwat, Prashant, Permaul, Kugenthiren, Singh, Suren, Pillai, Santhosh, Pandey, Ashok, Editorial Board Member, Larroche, Christian, Editorial Board Member, Dussap, Claude-Gilles, Editorial Board Member, Soccol, Carlos Ricardo, Series Editor, Treichel, Helen, Editorial Board Member, Zorov, Ivan N., Editorial Board Member, Permaul, Kugen, Editorial Board Member, Dahmen, Nicolaus, Editorial Board Member, Yusup, Suzana, Editorial Board Member, Brar, Satinder Kaur, editor, Permaul, Kugenthiren, editor, Pakshirajan, Kannan, editor, and de Carvalho, Júlio Cesar, editor

Published
2024
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3. Microwave calibration of qubit drive line components at millikelvin temperatures

Author

Simbierowicz, Slawomir, Monarkha, Volodymyr Y., Singh, Suren, Messaoudi, Nizar, Krantz, Philip, and Lake, Russell E.

Subjects
Quantum Physics, Physics - Applied Physics, Physics - Instrumentation and Detectors
Abstract

Systematic errors in qubit state preparation arise due to non-idealities in the qubit control lines such as impedance mismatch. Using a data-based methodology of short-open-load calibration at a temperature of 30 mK, we report calibrated 1-port scattering parameter data of individual qubit drive line components. At 5~GHz, cryogenic return losses of a 20-dB-attenuator, 10-dB-attenuator, a 230-mm-long 0.86-mm silver-plated cupronickel coaxial cable, and a 230-mm-long 0.86-mm NbTi coaxial cable were found to be 35$^{+3}_{-2}$ dB, 33$^{+3}_{-2}$ dB, 34$^{+3}_{-2}$ dB, and 29$^{+2}_{-1}$ dB respectively. For the same frequency, we also extract cryogenic insertion losses of 0.99$^{+0.04}_{-0.04}$ dB and 0.02$^{+0.04}_{-0.04}$ dB for the coaxial cables. We interpret the results using a master equation simulation of all XY gates performed on a single qubit. For example, we simulate a sequence of two 5 ns gate pulses (X & Y) through a 2-element Fabry-P\'erot cavity with 276-mm path length directly preceding the qubit, and establish that the return loss of its reflective elements must be >9.7 dB (> 14.7 dB) to obtain 99.9 % (99.99 %) gate fidelity., Comment: 6 pages, 3 figures plus supplementary material (3 figures). The following article has been accepted by Applied Physics Letters. After it is published, it will be found at https://doi.org/10.1063/5.0081861

Published
2021
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11. Bambara Groundnut Starch

Author

Oyeyinka, Samson A., Kayitesi, Eugénie, Diarra, Siaka S., Adedeji, Akinbode A., Amonsou, Eric O., Singh, Suren, Oyeyinka, Samson A., editor, and Ade-Omowaye, Beatrice I. O., editor

Published
2021
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24. Integrated biorefinery of Mucor circinelloidesbiomass and sugarcane bagasse for application of high-value biopolymers

Author

Zininga, Johnson Tungamirai, Puri, Adarsh Kumar, Dlangamandla, Nkosikho, Wang, Zhengxiang, Singh, Suren, and Permaul, Kugenthiren

Abstract

The replacement of expensive components in microbial growth media with pretreated lignocellulosic waste component to increase the product spectrum and add value to the bioproducts has been encouraged to achieve sustainable and feasible utilization of waste biomass as per the biorefinery approach. This study demonstrates an integrated biorefinery approach towards utilization of sugarcane bagasse and biomass of Mucor circinelloidesZSKP. A maximum reducing sugar recovery of 80.67 g/l was achieved after combining pretreatment with saccharification. A low temperature, glycerol, and ammonium phosphate pretreatment method was established, where glycerol pretreatment conditions were reduced from 250 to 150 °C and from 120 to 45 min. The ammonium phosphate-containing hydrolysate yielded 12.89 g/l of fungal biomass after fermentation to add to 20.8 g lignin from the delignification step. The biomass production was further improved to 17.69 g/l after supplementation with corn steep solids and mineral salts. The fermentation process also yielded 2.36 g/l chitosan and 4.9 g/l of lipids after extraction from the oleaginous fungus. The lignin infused glycerol plasticized chitosan biocomposite plastic had a 100% improvement in thermogravimetric properties with almost 50% more energy needed to increase the temperature of the material when compared to glycerol only plasticized biocomposite. The fungal chitosan showed antimicrobial properties and was effective as a preservative spray for fresh tomatoes and apples extending their shelf life to at least 14 and 18 days, respectively. This study therefore demonstrated that a novel two-step pretreatment process could be environmentally beneficial and yielded multiple products for biotechnological applications.

Published
2024
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36. Differential network analysis of oral microbiome metatranscriptomes identifies community scale metabolic restructuring in dental caries

Author

Espinoza, Josh L, primary, Torralba, Manolito, additional, Leong, Pamela, additional, Saffery, Richard, additional, Bockmann, Michelle, additional, Kuelbs, Claire, additional, Singh, Suren, additional, Hughes, Toby, additional, Craig, Jeffrey M, additional, Nelson, Karen E, additional, and Dupont, Chris L, additional

Published
2022
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