10,635 research outputs found
Besuchet die Herbstmesse Graz 1909, »Klek« der beste hygienische Anfeuchter der Welt! Vertret. durch das Verkaufskontor: J.M. Seidl, Graz, IV, Marschallgasse 22, Lith. G. Fischer, Graz
No full textBESUCHET DIE HERBSTMESSE GRAZ 1909, »KLEK« DER BESTE HYGIENISCHE ANFEUCHTER DER WELT! VERTRET. DURCH DAS VERKAUFSKONTOR: J.M. SEIDL, GRAZ, IV, MARSCHALLGASSE 22, LITH. G. FISCHER, GRAZ
Besuchet die Herbstmesse Graz 1909, »Klek« der beste hygienische Anfeuchter der Welt! Vertret. durch das Verkaufskontor: J.M. Seidl, Graz, IV, Marschallgasse 22, Lith. G. Fischer, Graz ( -
Vanadia Promoted Co-AI20 3 Fischer-Tropsch Catalysts
No full textBibliography: leaves 117-124.The primary aim of this work was to study systematically V20 5 promotion on yAI203 supported cobalt-based Fischer-Tropsch catalysts. The y-Ah03 support was modified by addition of varying amounts of vanadia and was subsequently loaded with the same Co content (10 wt-%). The modified supports and catalysts were characterised using conventional characterisation methods. The physio-chemical properties of the vanadia promoted supports and catalysts were characterised using Atomic Adsorption Spectroscopy (AAS), zeta-potential measurements, and BET measurements, X-ray Diffraction (XRD), Temperature Programmed Reduction (TPR), Transmission Electron Microscopy (TEM), and CO chemisorption. Catalyst performance in the Fischer-Tropsch synthesis was tested in fixed bed reactor. A catalysts synthesised from plain y-A1203 was used as a base catalyst. Characterization results show that modification of y-Ab03 support to obtain V205 loadings beyond 1-monolayer vanadia coverage was difficult when using ion exchange. Ion-exchange equilibrium limitations might have caused the poor vanadia loadings beyond 1-monolayer coverage. The supports net surface charge as measured using zeta potential, was decreased by vanadia content in the supports. CO chemisorption results were complex and could only be modelled using dual site Langmuir model assuming the presence of two different sites absorbing CO on the Co-V-AI catalyst system. This made extraction of physical properties from this method rather difficult. Fischer Tropsch synthesis reaction was carried out at typical industrial conditions (T=220°C, P=20 bar (a), H2/CO=2 Xco-60 mol-%) for cobalt catalysts. Vanadia promoted catalysts showed a marked decrease in initial activity. However, the overall deactivation rate was lower with increasing vanadia content. The vanadia content did not affect the chain growth kinetic behavior of the catalyst in the Fischer-Tropsch synthesis hence C5+ selectivity in the Fischer-Tropsch synthesis was unperturbed by vanadia content. Increasing the vanadia content in the catalyst resulted in high n-olefin content and high 1-olefin content. The observed increase in olefin content might be due to the low catalytic activity observed for the catalysts with high vanadia loadings. The most pronounced effect of vanadia promotion on Fischer Tropsch synthesis was in the oxygenate content in the Fischer-Tropsch product. Catalysts with high vanadia loading yielded high amounts of oxygenate products; mainly alcohols and aldehydes
Using Tympanometry Along with Visualization for Assisting with a More Accurate Diagnosis of Acute Otitis Media
No full textPurpose: The purpose of this project is to use tympanometry (TPM), a diagnostic tool, to aid in a more accurate diagnoses of acute otitis media (AOM) and due to tympanometry use, see a 25% decrease in AOM diagnoses.|Background: Acute otitis media is a frequently diagnosed illness with a common group of symptoms and a leading cause for prescribing antibiotics (Balasundaram et al., 2019; Danishyar, & Ashurst, 2019; Monasta et al., 2012; Shirai & Preciado, 2019). Accurately diagnosing AOM can be challenging for both experienced and inexperienced providers. Acute otitis media is such a common problem that over diagnosing and/or a misdiagnosis will make a significant difference in the patient’s plan of care.|Sample/Setting: The setting was at a rural Walk-In clinic in Northern Minnesota. The sample included nine providers and varying medical support staff to obtain tympanograms on all patients presenting with complaints of otalgia, and/or otorrhea, and/or hearing loss, or ear complaints over a 10-week period.|Methods: An anonymous pre-questionnaire and post-questionnaire were used to assess knowledge of diagnostic tools, current guideline recommendation, and if management practices changed after using tympanometry and plans for future use. An interactive workshop was completed to educate providers and medical support staff on how to use and interpret tympanometry results. Data collection included retrospective comparison of tenth revision (ICD10) diagnosis codes and current procedural terminology (CPT) billing codes from September to December 2019 and 2020 compared to September to December 2021.|Results: Acute otitis media decreased from 67% to 12% when tympanometry was used. Postquestionnaire response showed that 88.8% of the providers will continue to use TPM for future practice.|Conclusion: Adherence to recommended guidelines for using diagnostic tools to aid in diagnoses of AOM remains a problem and could be improved with further educational workshops. Tympanometry was shown to be a useful tool in decreasing AOM diagnoses when it was used
Whose story is it anyway? The ethics of narration and the narration of ethics in Summertime and Die Sneeuslaper
No full textIncludes bibliographical references.This dissertation analyses and compares the narrative strategies in J.M. Coetzee’s Summertime and Marlene van Niekerk’s Die sneeuslaper and considers the implications of these strategies for the authors’ exploration of the ethics of writing. Much has been written about the literary oeuvres of both Coetzee and Van Niekerk, including studies of the translations of Van Niekerk’s Afrikaans novels into English. There are few “interlingual” comparative studies of contemporary works in Afrikaans and English, however, and certainly none to my knowledge which compares the work of Coetzee and Van Niekerk. My contribution to the conversation about Coetzee’s and Van Niekerk’s work, but also to an increasingly multilingual and interconnected South African literary criticism, will be a comparison of one recent work by each of these two authors, written in English and Afrikaans respectively. I draw on the theories of Bakhtin, Barthes and Levinas to consider the ethical dimension of texts in which “double-voicedness”, a questioning not only of existence, but of the self is fore grounded in the content and narrative structure; where there is a shift in focus from the author to the reader (“the birth of the reader”) and “utterances” are made with the response of “the other” in mind
The effect of temperature on the Fischer-Tropsch selectivity and further mechanistic insights
No full textIncludes bibliographical references (p. 133-145).Concern’s that the world’s energy supply will not be able to keep pace with rising energy demands, have surfaced periodically for much of the petrochemical industry’s nearly 150 year history, but each time the industry has responded with technological advances and innovations to satisfy the global energy needs. Future advances will most likely include the enhanced recovery of conventional oil, the production of extra-heavy oil / tar sands and the utilization of alternative energy production technologies (technologies other than crude oil refining). The Fischer-Tropsch Synthesis (FTS) discovered in 1923 by Fischer and Tropsch, is one of these alternative fuel production technologies and can briefly be defined as the means used to convert synthesis gas containing hydrogen and carbon monoxide over a group VIII metal catalyst to hydrocarbon products and water. Given the vast product spectrum possible for the FTS (paraffins, olefins, alcohols, carbonyls, acids and aromatics), a great deal of controversy still exists as to the chemical identity of the monomeric building block and the propagation of the hydrocarbon chain on the catalyst surface [van Dijk., 2001]. Several mechanisms have been published with the four most popular (alkyl, alkenyl, enol and CO-insertion), recently reviewed by Claeys and van Steen (2004). It must however, be appreciated that given the complexity of the FT reaction it is generally accepted that more than one mechanism may operate on the catalyst surface at any one time. Furthermore, process parameters such as temperature, total pressure, partial pressure, hydrogen to carbon monoxide ratio, space velocity and residence time all have an influence on the FT product selectivity. Because of this it becomes exceptionally complicated to determine the effects of just one parameter while taking the effects of the additional parameters into account
Tetramorium renae Hita Garcia, Fischer & Peters 2010, sp. n.
No full textTetramorium renae Hita Garcia, Fischer & Peters sp. n. (Figures 17A, 85, 86,87) Holotype worker, SÃO TOMÉ & PRINCIPE, Isla São Tomé, Ôbó N.P., 1.63 km WSW Bom Successo, 00° 16' 34'' N, 06° 36' 20'' E, 1351m, 5.-8.V.2001, #562, leg. J.M. Ledford (CASC: CASENT0095412). Paratypes, 7 workers with same data as holotype (CASC: 5 workers CASENT0095382, CASENT0095421, CASENT0095423, CASENT0095427; NHMB: 1 worker CASENT0095426; ZFMK: 2 workers CASENT0095383, CASENT0095425); 1 worker from SÃO TOMÉ & PRINCIPE, Ilha São Tomé, Ôbó N.P., 1.63 km WSW Bom Successo, 00° 16' 34'' N, 06° 36' 20'' E, 1351m, 9.-16.IV.2001, leg. C.E. Griswold (CASC: CASENT0096829); 2 workers from SÃO TOMÉ & PRINCIPE, Ilha São Tomé, Ôbó N.P., between Lagoa Ameila & Bom Successo, 00° 16' 48''– 00° 17' 10'' N, 06° 25' 29''– 06° 36' 40'' E, 1200m – 1500m, 5.-15.V.2001, #563, leg. J.M. Ledford (CASC: 2 workers CASENT0096115, CASENT0096119); 2 workers from SÃO TOMÉ & PRINCIPE, Isla São Tomé, Ôbó N.P., between Lagoa Ameila & Bom Successo, 00° 16' 48''– 00° 17' 19'' N, 06° 25' 29''– 06° 36' 45'' E, 1200m – 1500m, 5.-8.V.2001, #564, leg. J.M. Ledford (CASC: 1 worker CASENT0096916; MHNG: 1 worker CASENT0096940).Published as part of Garcia, Francisco Hita, Fischer, Georg & Peters, Marcell K., 2010, Taxonomy of the Tetramorium weitzeckeri species group (Hymenoptera: Formicidae) in the Afrotropical zoogeographical region 2704, pp. 1-90 in Zootaxa 2704 on page 7
"The day of the great writer is gone for ever": Author surrogacy in Martin Amis’s Money and J.M. Coetzee’s Summertime.
No full textThis study focuses on the use of author surrogacy in the novels Money: A Suicide Note by Martin Amis and Summertime: Scenes from Provincial Life by J.M. Coetzee. It addresses the connection between their use of author surrogacy and their comments on what scholars classify as the postmodern cultural condition. Both authors have written themselves into their novels with a different purpose but both used strikingly similar themes to incorporate this purpose, although the stress on these themes varies. Authorial power, the distinction between the real and the imagined, and the fading line between high- and lowbrow culture are examples of the topics discussed in this study with regards to author surrogacy and the postmodern cultural condition. This study concludes that, through their use of author surrogacy, J.M. Coetzee mainly aims to critique, while Martin Amis satirises postmodern culture.
Keywords: Amis, author surrogacy, authorial power, Coetzee, fact-fiction distinction, high- and lowbrow culture, postmodern cultural condition
Supplementary data S1
No full textSupplementary data S1 belonging to A novel Desulfosporosinus nitroreducens strain P130 capable of anaerobic methylotrophy isolated from Black Sea sediments by Peter Q. Fischer, Alfons J.M. Stams, Laura Villanueva, Diana Z. Sousa </p
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