11,862,685 research outputs found
Pro Memoria of Wilhelm Wortmann
No full textThe author of this report, Wilhelm Wortmann (born November 20, 1797 in Elberfeld, died August 6, 1882 in Dusseldorf) had been one of the deputy mayors in Dusseldorf since 1848 and was a member of the administrative council of the Allgemeine Musikverein, founded in 1845, where he functioned as recording secretrary. In addition, he was second oboist of the society's orchestra. This circumstance could have a personal note, since Wortmann was not a professional musician but one of the "dilletantes" whom Schumann disliked having in the orchestra.Robert Schumann was the director of the Allgemeine Musiverein [General Music Society] at Dusseldorf from 1850 until the end of 1853 (de jure until the end of 1854), conducting the orchestra and the chorus. He was also the municipal music director. Nearly from the beginning there were conflicts between the Society and Schumann. In his second year, he had a stormy confrontation with the deputy mayor Wilhelm Wortmann who was also a leading member of the council of the Allgemeine Musikverein. Schumann's health deteriorated during 1852 and especially the fall of 1853. Things got worse when members of the chorus and orchestra were dissatisfied with Schumann's style of conducting and refused to perform under his direction. Schumann was for his part dissatisfied with the skills of some instrumentalists and singers. In addition, Schumann failed (or refused) to appear at a concert on November 10, 1853. In a letter to the administrative council of the Society dated November 1853, Schumann accuses the council of breach of contract. Mayor Ludwig Hammers tries to mediate between the two parties with a letter dated December 5, 1853. In the end, Schumann terminated his contract in Dusseldorf in October 1854.The paper Pro memoria must have been written between November 19 and Debember 5, 1853. It was written to clarify the situation between the Society and its director and then delievered to the members of the town council of Dusseldorf. At the end of the report, Wormann mentions the letter from Schumann dated November 19 (page 43 of the Pro memoria, line 13-16). A copy of the Pro memoria was most probably sent to Schumann on Debember 5, 1853 from Mayor Hammers, along with a letter in which he asks for Schumann's comment on the reported events.There is another copy of this report held by the Stadtarchiv Dusseldorf (Town Archive Dusseldorf). There are two possibilities for the relationship the two documents. First, the Rice University copy could be a copy of the one held by the Town Archive Dusseldorf. Second, both could be a copy of another exemplar. The later seems likely. Both copies have mistakes in writing that are held in common. There are marks in the Rice copy made in pencil. It is unclear who made them. However, all of the are at parts of the text that report negatively on Robert Schumann. They stem from a member of the town council, from a member of the music society, or from later owners
Der Mann, das Weib und das Kind : Eine allgemeinverständliche Darstellung über Liebe, Ehe, Schwangerschaft und Geburt nebst Anleitung für die natur- und vernunftgemäße Pflege des Kindes.
No full textIn FrakturMuseum Burg LinnVon J. H. Franke (H. Wortmann). Mit Illustrationen
Table to accompany Religion and Spirituality in Adjustment Following Bereavement: An Integrative Review
No full textThis table accompanies the article entitled Religion and Spirituality in Adjustment Following Bereavement: An Integrative Review, (Wortmann & Park, 2008). The table summarizes the results of published studies that contain a quantitative assessment of religion and an adjustment outcome in bereaved participants. Fields include author(s)\u27s last name, publication year, sample characteristics, independent religious/spiritual variable, adjustment variable, results, and study design
Investigation of structural changes of ortho- and para-cortical cells in bleached human hair by Differential Scanning Calorimetry
No full textInvestigation of structural changes of Ortho- and Para- Cortical cells in bleached human hair by Differential Scanning CalorimetryD. Zhang 1, F. J. Wortmann 1, G. Wortmann 1, E. Schulze zur Wiesche 2 1 School of Materials, University of Manchester, Manchester, UK1 TRI Princeton, NJ, USA2 Henkel AG &Co KGaA, Hamburg, GERAbstract: Using three Gaussian distributions, the deconvoluted DSC results for two bleached hair samples confirm that a stronger bleach causes a homogenous structural damage on both para- and ortho-cortex with prolonged bleaching time. The predominant structural damage for various heating rates is verified to only occur in the IF. α-helices in three cortical components are homogenously damaged on chemically damaged fibres. However, heating rates yield a homogenous effect on disulfide linkages of para- and ortho- cortex, regardless of any previous oxidation treatment. Key Words: Deconvolution, para-cortex, ortho-cortex, heating rates, bleachin
Thermal analysis and synergistic tools for the development of a semi-permanent hair straightening technology
No full textThis research was carried out with the objective to develop a thermal analysis protocol into a method of damage assessment and claims support for a new semi-permanent hair straightening technology. The investigation determined the effects of the treatment on hair fibre composition and properties using Modulated Differential Scanning Calorimetry (MDSC) [1], Fourier Transform Infrared Spectroscopy (FTIR) [2], Gel Electrophoresis (SDS-PAGE) [3] and curl retention tests [4]. The effects of the new cysteamine treatment are compared with effects of a standard thioglycolate treatment and the daily use of straightening irons. Virgin, Caucasian hair was treated once with each chemical treatment and washed every day for 84 days. In a parallel study, hair was washed and straightened repeatedly using a standardised protocol at 190oC for 84 days. Samples were taken after 2, 28, 56 and 84 days for analysis by MDSC in water, ATR- and Trans-FTIR. Separate samples were treated once and subjected to curl retention tests and protein analysis. DSC measurements in water yield the keratin denaturation enthalpy (ΔHD), which relates to the thermal stability of the keratin intermediate filaments (KIFs), and the denaturation temperature (TD), which relates to the properties of the keratin associated-proteins (KAPs). The results show that chemical and thermal straightening cause a reduction in α-helix content and matrix viscosity. FTIR measurements give information on the formation of cysteic acid in the cuticle cells and the cortex. ATR-FTIR showed that the cysteamine–based treatment produces less cysteic acid in the cuticle layers than the standard treatment. Curl retention and SDS-PAGE were used to show the variability in the efficacy of the cysteamine treatment related to the heterogeneity of human hair. The results from both tests show that an individual’s hair will react with the product to a different extent, depending on the extractability of the keratin protein groups.In conclusion, we deduce that all straightening techniques, chemical and thermal, have a pronounced effect on the structural and chemical properties of hair fibres. These effects can be used to further develop and optimize this and related products. DSC has been shown to be an integral synergistic technique for the investigation of changes to hair morphology.This research was supported by the UK Technology Strategy Board under the Knowledge Transfer Partnership scheme.Cyril Keattch Award, Thermal Methods Group, Royal Society of Chemistry, 2014.[1] F.J. Wortmann, G. Wortmann, J. Marsh, K. Meinert. J. Struct. Biol., 177 (2012) 553. [2] V. Signori, D. Lewis. Int. J. Cosmet. Sci., 19 (1997) 1-13.[3] A.M. Zalfen, G. Wortmann, F.J. Wortmann. SOEFW Journal, 131 (2005) 40.[4] F.J. Wortmann, M. Stapels, L. Chandra. J Appl.Polym.Sci., 113 (2009) 3336
Thermal analysis and synergistic tools for the development of a semi-permanent hair straightening technology
No full textThis research was carried out with the objective to develop a thermal analysis protocol into a method of damage assessment and claims support for a new semi-permanent hair straightening technology. The investigation determined the effects of the treatment on hair fibre composition and properties using Modulated Differential Scanning Calorimetry (MDSC) [1], Fourier Transform Infrared Spectroscopy (FTIR) [2], Gel Electrophoresis (SDS-PAGE) [3] and curl retention tests [4]. The effects of the new cysteamine treatment are compared with effects of a standard thioglycolate treatment and the daily use of straightening irons. Virgin, Caucasian hair was treated once with each chemical treatment and washed every day for 84 days. In a parallel study, hair was washed and straightened repeatedly using a standardised protocol at 190oC for 84 days. Samples were taken after 2, 28, 56 and 84 days for analysis by MDSC in water, ATR- and Trans-FTIR. Separate samples were treated once and subjected to curl retention tests and protein analysis. DSC measurements in water yield the keratin denaturation enthalpy (ΔHD), which relates to the thermal stability of the keratin intermediate filaments (KIFs), and the denaturation temperature (TD), which relates to the properties of the keratin associated-proteins (KAPs). The results show that chemical and thermal straightening cause a reduction in α-helix content and matrix viscosity. FTIR measurements give information on the formation of cysteic acid in the cuticle cells and the cortex. ATR-FTIR showed that the cysteamine–based treatment produces less cysteic acid in the cuticle layers than the standard treatment. Curl retention and SDS-PAGE were used to show the variability in the efficacy of the cysteamine treatment related to the heterogeneity of human hair. The results from both tests show that an individual’s hair will react with the product to a different extent, depending on the extractability of the keratin protein groups.In conclusion, we deduce that all straightening techniques, chemical and thermal, have a pronounced effect on the structural and chemical properties of hair fibres. These effects can be used to further develop and optimize this and related products. DSC has been shown to be an integral synergistic technique for the investigation of changes to hair morphology.This research was supported by the UK Technology Strategy Board under the Knowledge Transfer Partnership scheme.Cyril Keattch Award, Thermal Methods Group, Royal Society of Chemistry, 2014.[1] F.J. Wortmann, G. Wortmann, J. Marsh, K. Meinert. J. Struct. Biol., 177 (2012) 553. [2] V. Signori, D. Lewis. Int. J. Cosmet. Sci., 19 (1997) 1-13.[3] A.M. Zalfen, G. Wortmann, F.J. Wortmann. SOEFW Journal, 131 (2005) 40.[4] F.J. Wortmann, M. Stapels, L. Chandra. J Appl.Polym.Sci., 113 (2009) 3336
A genome-wide screen for wortmann in and hydrogen peroxide resistant mutants in Schizosaccharomyces pombe
No full textA
genome-wide screen for wortmann in and hydrogen peroxide resistant mutants in Schizosaccharomyces pombe
Investigation of structural changes of ortho- and para-cortical cells in bleached human hair by Differential Scanning Calorimetry
No full textInvestigation of structural changes of Ortho- and Para- Cortical cells in bleached human hair by Differential Scanning CalorimetryD. Zhang 1, F. J. Wortmann 1, G. Wortmann 1, E. Schulze zur Wiesche 2 1 School of Materials, University of Manchester, Manchester, UK1 TRI Princeton, NJ, USA2 Henkel AG &Co KGaA, Hamburg, GERAbstract: Using three Gaussian distributions, the deconvoluted DSC results for two bleached hair samples confirm that a stronger bleach causes a homogenous structural damage on both para- and ortho-cortex with prolonged bleaching time. The predominant structural damage for various heating rates is verified to only occur in the IF. α-helices in three cortical components are homogenously damaged on chemically damaged fibres. However, heating rates yield a homogenous effect on disulfide linkages of para- and ortho- cortex, regardless of any previous oxidation treatment. Key Words: Deconvolution, para-cortex, ortho-cortex, heating rates, bleachin
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