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[Carl Koch, Engine Drawing Card, Sketch No. 6285]
No full textThis engine drawing card was created for Carl Koch, Class 8-22D. Section H-8D. Sketch 6285. Copy Spec. C-2848
Effects of different operating parameters on hydrogen production by Parageobacillus thermoglucosidasius DSM 6285
Get PDFAdditional file 1. Effect of initial gas composition on H2
production.
OD600
and gas composition during the cultivation of P. thermoglucosidasius
DSM 6285 with an initial gas atmosphere of (A) 36% CO + 64% air (B)
50% CO + 50% air (C) 75% CO + 25% air.Additional file 2. Effect of inoculum preparation on H2
production—
inoculum size. OD600
and gas composition during the cultivation of P.
thermoglucosidasius DSM 6285 with different inoculum sizes of (A) 2% (B)
10% and (C) 20%.Additional file 3. Effect of inoculum preparation on H2
production—
incubation time of the 2nd pre-culture. OD600
and gas composition during
the cultivation of P. thermoglucosidasius DSM 6285 with variations in the
incubation time of the 2nd pre-culture: (A) 4 h (B) 12 h (C) 24 h.Additional file 4. Effect of cultivation temperature on H2
production.
OD600
and gas composition during the cultivation of P. thermoglucosidasius DSM 6285 with different cultivation temperatures: (A)
50 °C (B) 55 °C (C) 60 °C.Additional file 5. Effect of initial pH on H2
production. OD600
and gas
composition during the cultivation of P. thermoglucosidasius DSM 6285
with different pH set ups: (A) pH 5.5 (B) pH 7.0 (C) pH 8.5.Additional file 6. Effect of Nickel and Iron concentration on H2
production.
OD600
and gas composition during the cultivation of P. thermoglucosidasius
DSM 6285 with addition of trace elements: (A) 0.3 mM
NiSO4
·6H2O + 0.04 mM FeSO4
·7H2O and (B) 0.080 mM FeSO4·7H2O (C)
0.04 mM FeSO4
·7H2O.Hydrogen gas represents a promising alternative energy source to dwindling fossil fuel reserves, as it carries the highest
energy per unit mass and its combustion results in the release of water vapour as only byproduct. The facultatively
anaerobic thermophile Parageobacillus thermoglucosidasius is able to produce hydrogen via the water–gas shift reaction
catalyzed by a carbon monoxide dehydrogenase–hydrogenase enzyme complex. Here we have evaluated the
effects of several operating parameters on hydrogen production, including different growth temperatures, pre-culture
ages and inoculum sizes, as well as different pHs and concentrations of nickel and iron in the fermentation medium.
All of the tested parameters were observed to have a substantive effect on both hydrogen yield and (specific) production
rates. A final experiment incorporating the best scenario for each tested parameter showed a marked increase in
the H2
production rate compared to each individual parameter. The optimised parameters serve as a strong basis for
improved hydrogen production with a view of commercialisation of this process.The Federal Ministry of Education and Research (Grant
#031B0180), the National Research Foundation of South
Africa (Grant # 109137) and HA by Alexander von Humboldt Foundation as well as Deutsche Forschungsgemeinschaft and Open
Access Publishing Fund of Karlsruhe Institute of Technology.http://www.amb-express.comam2020BiochemistryGeneticsMicrobiology and Plant Patholog
MOESM4 of Effects of different operating parameters on hydrogen production by Parageobacillus thermoglucosidasius DSM 6285
No full textAdditional file 4. Effect of cultivation temperature on H2 production. OD600 and gas composition during the cultivation of P. thermoglucosidasius DSM 6285 with different cultivation temperatures: (A) 50 °C (B) 55 °C (C) 60 °C
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
MOESM5 of Effects of different operating parameters on hydrogen production by Parageobacillus thermoglucosidasius DSM 6285
No full textAdditional file 5. Effect of initial pH on H2 production. OD600 and gas composition during the cultivation of P. thermoglucosidasius DSM 6285 with different pH set ups: (A) pH 5.5 (B) pH 7.0 (C) pH 8.5
MOESM2 of Effects of different operating parameters on hydrogen production by Parageobacillus thermoglucosidasius DSM 6285
No full textAdditional file 2. Effect of inoculum preparation on H2 production—inoculum size. OD600 and gas composition during the cultivation of P. thermoglucosidasius DSM 6285 with different inoculum sizes of (A) 2% (B) 10% and (C) 20%
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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