1,878 research outputs found
Development of numerical simulation methods to support emerging rapid and automated radioanalytical techniques
No full textThe global demand for radiological characterisation of a vast range of sample matrices as well as the pressure to improve emergency preparedness has led to the emergence of novel rapid and automated techniques. For radioanalytical procedures involving the separation and isolation of difficult to measure nuclides, a particular focus has been on the use of pumps or pressure gradients to accelerate the flow of solutions through a chromatographic column. The introduction of elevated flow rates as well as changing procedural specifications due to advances in detection method, shifts in nuclide detection levels required for dose assessments and growing interest in unusual matrices has contributed to the need for new or modified radioanalytical methods. The development and validation of methods can involve a large volume of experimental work and is often hindered by a lack of certified reference materials and isotopic tracers. The development of software to simulate chromatographic breakthrough and elution profiles would therefore be a useful tool in method development and validation as well as in support of routine radiological analysis using automated separation techniques. This thesis details the development of a numerical simulation method for modelling chromatographic breakthrough. A mechanistic and modular approach has been followed based on the numerical solution of ordinary differential equations to describe concentration change with respect to time. The method was first developed to describe the batch sorption and desorption of analytes and then applied to a packed bed geometry under a range of operating conditions. The proposed numerical simulation method shows great potential for the prediction of elution profiles from any chromatographic system provided the correct input parameters are defined.<br/
Sara Winthrop Smith letter to Frances Casement, August 14, 1887
No full textLetter written to Frances Casement from Sara Winthrop Smith of Cincinnati, Ohio, August 14, 1887. Winthrop expresses the challenges of generating support for the suffrage movement among the conservative residents of her city, and encourages the creation of clear materials that make the argument for women's suffrage to be more widely distributed.
This item comes from the Frances Jennings Casement Papers, a manuscript collection comprised of letters and association records related to the founding and leadership of the Ohio Woman Suffrage Association. Casement (1840-1928) was born in Painesville, Ohio, and graduated from Painesville Academy and Willoughby Female Seminary. Her father, Charles Casement, supported abolition and women's suffrage and encouraged Frances to be active in social causes. Frances Casement established the Painesville Equal Rights Association in 1883, and shortly after became involved in the Ohio Woman Suffrage Association, serving as its president from 1885 to 1888
Jane Jones letter to Frances Casement, November 11, 1887
No full textThis brief letter written by Jane Jones of Piqua, Ohio, to Frances Casement indicates that, while Ms. Jones is a temperance supporter, she does not support the suffrage movement and has passed a selection of promotional materials to a colleague at the local chapter of the Woman's Christian Temperance Union who is a suffrage proponent.
This item comes from the Frances Jennings Casement Papers, a manuscript collection comprised of letters and association records related to the founding and leadership of the Ohio Woman Suffrage Association. Casement (1840-1928) was born in Painesville, Ohio, and graduated from Painesville Academy and Willoughby Female Seminary. Her father, Charles Casement, supported abolition and women's suffrage and encouraged Frances to be active in social causes. Frances Casement established the Painesville Equal Rights Association in 1883, and shortly after became involved in the Ohio Woman Suffrage Association, serving as its president from 1885 to 1888
A compact, dual-zone vertical tube furnace for the determination of tritium and carbon-14 in decommissioning wastes
No full textA compact dual zone, two work-tube, vertical tube furnace system (Raddec Pyrolyser-Mini) has been designed for the determination of H-3 and C-14 in decommissioning wastes. An optimised methodology was developed following improvements to sample holder and bubbler trap design, sample loading and loading temperature, as well as length and style of heating programmes. A significant efficiency enhancement was obtained through ‘hot-loading’ of the sample into the furnace at 600 °C before finally ramping to 900 °C. Direct trapping of H-3 and C-14 in a scintillation vial located in a special anti-suck-back bubbler further improved operations, leading to a reduction in analysis time and measurement sensitivity. Co-trapping of the analytes and dual-label liquid scintillation counting also proved effective. Overall, the developed methodology led to a reduced analyte extraction/trapping time of 150 min whilst achieving limits of detection of <1 Bq/g. Validation of the procedure was assessed using a range of spiked matrices relevant to nuclear site decommissioning, reference materials and operationally-exposed materials. The compact size of this thermal extraction system is such that it allows for deployment in fume cupboards, gloveboxes and a mobile laboratory
Mrs. J. H. Ammon letter to Frances Casement, December 24, 1884
No full textLetter from Josephine M. (Mrs. J. H.) Ammon of Cleveland to Frances Casement, December 24, 1884. Ammon expresses her thanks to Casement and her fellow suffrage supporters in Painesville, Ohio, for recently hosting Ammon and other women from Cleveland. She discusses an upcoming lecture to take place titled "Should Women Vote?" and explores options to combine efforts in the region with regard to public lectures.
This item comes from the Frances Jennings Casement Papers, a manuscript collection comprised of letters and association records related to the founding and leadership of the Ohio Woman Suffrage Association. Casement (1840-1928) was born in Painesville, Ohio, and graduated from Painesville Academy and Willoughby Female Seminary. Her father, Charles Casement, supported abolition and women's suffrage and encouraged Frances to be active in social causes. Frances Casement established the Painesville Equal Rights Association in 1883, and shortly after became involved in the Ohio Woman Suffrage Association, serving as its president from 1885 to 1888
Mrs. M. B. Haven letter to Frances Casement, September 25, 1884
No full textLetter from Mrs. Martha (M. B.) Haven of Cleveland, Ohio, to Frances Casement, September 25th, 1884. Haven encloses petitions and requests Casement's assistance in collecting names to protest the decision of Adelbert College to close admission to women. Adelbert College (originally named Western Reserve College) would go on to stop admitting women in 1888; female students were instead enrolled in the College for Women of Western Reserve University, though the two schools continued to cooperate closely for years. After a series of mergers between a number of other schools and colleges, the institution would be known as Case Western Reserve University beginning in 1967.
This item comes from the Frances Jennings Casement Papers, a manuscript collection comprised of letters and association records related to the founding and leadership of the Ohio Woman Suffrage Association. Casement (1840-1928) was born in Painesville, Ohio, and graduated from Painesville Academy and Willoughby Female Seminary. Her father, Charles Casement, supported abolition and women's suffrage and encouraged Frances to be active in social causes. Frances Casement established the Painesville Equal Rights Association in 1883, and shortly after became involved in the Ohio Woman Suffrage Association, serving as its president from 1885 to 1888
Mrs. M. B. Haven letter to Frances Casement, September 29, 1884
No full textLetter from Mrs. Martha (M. B.) Haven of Cleveland, Ohio, to Frances Casement, September 29th, 1884. Haven writes concerning the decision of Adelbert College to close admission to women and her actions and intentions to protest this decision. Adelbert College (originally named Western Reserve College) would go on to stop admitting women in 1888; female students were instead enrolled in the College for Women of Western Reserve University, though the two schools continued to cooperate closely for years. After a series of mergers between a number of other schools and colleges, the institution would be known as Case Western Reserve University beginning in 1967.
This item comes from the Frances Jennings Casement Papers, a manuscript collection comprised of letters and association records related to the founding and leadership of the Ohio Woman Suffrage Association. Casement (1840-1928) was born in Painesville, Ohio, and graduated from Painesville Academy and Willoughby Female Seminary. Her father, Charles Casement, supported abolition and women's suffrage and encouraged Frances to be active in social causes. Frances Casement established the Painesville Equal Rights Association in 1883, and shortly after became involved in the Ohio Woman Suffrage Association, serving as its president from 1885 to 1888
Development of a numerical simulation method for modelling column breakthrough from extraction chromatography resins
No full textA numerical simulation method has been developed to describe the transfer of analytes between solid and aqueous phases and assessed for a commercially available extraction chromatography resin (UTEVA resin). The method employs an ordinary differential equation solver within the LabVIEW visual programming language. The method was initially developed to describe a closed batch system. The differential equations and kinetic rate constants determined under these conditions were then applied to the flow-through column geometry. This was achieved by modelling the resin bed as a series of discrete vertically stacked sections, thereby generating an array of solid and aqueous concentration values. Axial flow was simulated by the advancement of the aqueous phase values by one array position with the value advancing from the final array position representing the column output concentration. An investigation into the observed difference in breakthrough profiles obtained under repeated conditions revealed the relative tolerance of the numerical simulation method to errors in each input parameter. Additional physical processes such as backpressure and leaching of the extractant were considered as an explanation for observed inconsistencies between experimental and simulated datasets. An elution sequence featuring multiple eluents was also simulated, demonstrating that the prediction of analyte separation sequences is possible. The potential to develop the LabVIEW coding into user friendly software with an extendable kinetic database is also discussed. This software will be a useful tool to radiochemists particularly in the development of new analytical methods using automated separation systems
Archives and Images as Repositories of Time, Language, and Forms from the Past: A Conversation with Daniel Eisenberg
No full textEliza Frances Andrews diary, 1870-1872
No full textPersonal diary of Eliza Frances Andrews describing the events of 1870-1872 as experienced by the author. This diary acts, in part, as a sequel to "The War-Time Journal of a Georgia Girl, 1864-1865" by Eliza Frances Andrews. Missing pages 1-119 and 193-235
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