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Pages
- Title
- Population Dynamics of Listeria monocytogenes in Nut, Seed and Legume Butters
- Creator
- Zhang, Xinyuan
- Date
- 2020
- Description
-
Nut, seed, and legume butters are low water activity foods and do not support the growth of foodborne pathogens. Research has determined that...
Show moreNut, seed, and legume butters are low water activity foods and do not support the growth of foodborne pathogens. Research has determined that some pathogens, such as Listeria monocytogenes, can survive for long periods of time in butters, such as almond butter. However, information on the persistence of L. monocytogenes in butters is lacking. The purpose of this study was to determine the population dynamics of L. monocytogenes in butters stored at 5 and 25°C. Nut (almond, hazelnut, pecan), seed (pumpkin, sesame, sunflower), legume (peanut and soy) and butters containing chocolate (hazelnut and peanut) were inoculated with a 4-strain cocktail of rifampicin-resistant L. monocytogenes at 4 (high inoculation) or 1 log CFU/g (low inoculation). High inoculation butters were mixed by hand for 15 min and 100-g portions were weighed into deli-style containers with lids and stored at 5 or 25°C for 12 mo (370 d). Low inoculation butters were stored in 25- g portions in stomacher bags at 25°C for 6 mo (180 d). During storage, 25 g from the 100- g high inoculation portion or 25 g from the low inoculation samples, in triplicate, were homogenized with 225 mL BPB (or BLEB for FDA BAM enrichments when necessary) and serial dilutions of the homogenate were plated onto BHIA with rifampicin for enumeration of L. monocytogenes. Data were statistically analyzed using Student’s t-test (α=0.05). The average initial population of L. monocytogenes in the butters was 3.58±0.25 log CFU/g for the high inoculation butters; L. monocytogenes was detected through enrichments for all low inoculation butters. After 12 mo storage at 5°C, the population of L. monocytogenes decreased by 1.34, 1.27, 1.72, 2.04 and 0.93 log CFU/g in almond, hazelnut, peanut with chocolate, hazelnut with chocolate and pecan butter, respectively, when inoculated at the higher level. Significantly less population reduction was observed in pumpkin, sesame, soy, peanut and sunflower butters (1.08, 0.61, 0.84, 0.05 and 0.40 log CFU/g, respectively). After 12 mo storage at 25°C, the L. monocytogenes population in all butters, with the exception of sunflower butter, decreased to below the limit of enumeration (1.67 log CFU/g), but the pathogen was still present via enrichment. For low inoculation butters, L. monocytogenes was present as determined by enrichment in all butters in at least one of two trials after 6 mo. The results of this study provide information on the survival of L. monocytogenes in different butter types when stored at different temperatures.
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- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Modernism art fair, including Mary Henry's Quasar, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar....
Show morePhotograph of the Aaron Galleries Booth at the Modernism exhibition, at Park Place Armory in 2006, including Mary Henry's painting Quasar. Aaron Brothers, a Chicago gallery, included Mary Henry's work in two art shows at Park Place Armory in 2006, Modernism and Art20. Inscription on verso: "Modernism - Park Avenue Armory 2006 Mary Henry 'Quasar' in booth center Aaron Galleries, Exhibitor." Photographer unknown.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Keith School, Chicago, Illinois
- Creator
- Illinois Institute of Technology. Office of Public Relations
- Date
- 1950-1959
- Description
-
Photograph of the Keith School, which was constructed in 1883 and demolished in 1959. This elementary school, named after Chicago milliner...
Show morePhotograph of the Keith School, which was constructed in 1883 and demolished in 1959. This elementary school, named after Chicago milliner Elbridge G. Keith, opened its doors in 1883. The school, which became increasingly surrounded by the Institute's campus, closed in 1959, and was demolished that same year. Date of photograph is unknown. Date range listed (1950-1959) is approximate.
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- Dan Ryan collection, 1954-1980
- Title
- Automotive Laboratory, Illinois Institute of Technology campus, Chicago, Illinois
- Date
- 1917-1946
- Description
-
Photograph of the Automotive Laboratory on the Illinois Institute of Technology campus. The Laboratory is located at 3240 South Federal Street...
Show morePhotograph of the Automotive Laboratory on the Illinois Institute of Technology campus. The Laboratory is located at 3240 South Federal Street, and was constructed in 1917. Also known as: Mechanical Engineering Laboratory (1963-66), Gas Dynamics Laboratory (ca. 1966-ca. 1972), Maintenance Garage (1972-ca. 2000), Armour Institute Laboratory. Date of photograph is unknown. Date range listed is approximate. Photographer unknown.
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- Office of Communications and Marketing photographs, 1905-1999
- Title
- Pencil drawing, 1973
- Creator
- Henry, Mary Dill, 1913-2009
- Date
- 1973-10-01
- Description
-
Untitled pencil drawing by Mary Henry, possibly a sketch or study made during the development of a larger piece. Inscription: "Somber dark, 3...
Show moreUntitled pencil drawing by Mary Henry, possibly a sketch or study made during the development of a larger piece. Inscription: "Somber dark, 3 panels - black brown blue with white stripes."
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- Mary Dill Henry Papers, 1913-2021
- Title
- Colored pencil drawing, undated
- Creator
- Henry, Mary Dill, 1913-2009
- Description
-
Untitled colored pencil drawing by Mary Henry, date unknown.
- Collection
- Mary Dill Henry Papers, 1913-2021
- Title
- Photograph of the Aaron Galleries booth at the Art 20 art fair, including Mary Henry's The Chelsea Way, New York, New York, 2006
- Date
- 2006
- Description
-
Photograph of the Aaron Galleries Booth at the Art 20 exhibition, at Park Place Armory in 2006, including Mary Henry's painting The Chelsea...
Show morePhotograph of the Aaron Galleries Booth at the Art 20 exhibition, at Park Place Armory in 2006, including Mary Henry's painting The Chelsea Way visible at right. Inscription on verso: "Art 20 - Park Ave. Armory 2006 Mary Henry 'The Chelsea Way' on the aisle Aaron Galleries Booth."
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- Mary Dill Henry Papers, 1913-2021
- Title
- TechNews, March 29, 2011
- Creator
- Illinois Institute of Technology
- Date
- 2011-03-29, 2011-03-29
- Collection
- Technology News print collection, 1940-2019
- Title
- Ink Drawings, 1981
- Creator
- Henry, Mary Dill, 1913-2009
- Date
- 2/17/1981
- Description
-
Untitled ink drawings by Mary Henry. Inscription on verso reads "8' x 6' Feb 17 81" and also contains what appear to be mathematical...
Show moreUntitled ink drawings by Mary Henry. Inscription on verso reads "8' x 6' Feb 17 81" and also contains what appear to be mathematical calculations.
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- Mary Dill Henry Papers, 1913-2021
- Title
- Ink and Colored Pencil Drawings, 1981
- Creator
- Henry, Mary Dill, 1913-2009
- Date
- 1981-03-01
- Description
-
Untitled ink and colored pencil sketches by Mary Henry. Drawings are found on both sides of the sheet. Inscription on verso reads "March 1 '81."
- Collection
- Mary Dill Henry Papers, 1913-2021
- Title
- Ink and Colored Pencil Drawings, 1981, verso
- Creator
- Henry, Mary Dill, 1913-2009
- Date
- 1981-03-01
- Description
-
Untitled ink and colored pencil sketches by Mary Henry. Drawings are found on both sides of the sheet. Inscription on verso reads "March 1 '81."
- Collection
- Mary Dill Henry Papers, 1913-2021
- Title
- Ink and Colored Pencil Drawings, 1981, recto
- Creator
- Henry, Mary Dill, 1913-2009
- Date
- 1981-03-01
- Description
-
Untitled ink and colored pencil sketches by Mary Henry. Drawings are found on both sides of the sheet. Inscription on verso reads "March 1 '81."
- Collection
- Mary Dill Henry Papers, 1913-2021
- Title
- Intraoperative Assessment of Surgical Margins in Head And Neck Cancer Resection Using Time-Domain Fluorescence Imaging
- Creator
- Cleary, Brandon M.
- Date
- 2023
- Description
-
Rapid and accurate determination of surgical margin depth in fluorescence guided surgery has been a difficult issue to overcome, leading to...
Show moreRapid and accurate determination of surgical margin depth in fluorescence guided surgery has been a difficult issue to overcome, leading to over- or under-resection of cancerous tissues and follow-up treatments such as ‘call-back’ surgery and chemotherapy. Current techniques utilizing direct measurement of tumor margins in frozen section pathology are slow, which can prevent surgeons from acting on information before a patient is sent home. Other fluorescence techniques require the measurement of margins via captured images that are overlayed with fluorescent data. This method is flawed, as measuring depth from captured images loses spatial information. Intensity-based fluorescence techniques utilizing tumor-to-background ratios do not decouple the effects of concentration from the depth information acquired. Thus, it is necessary to perform an objective measurement to determine depths of surgical margins. This thesis focuses on the theory, device design, simulation development, and overall viability of time-domain fluorescence imaging as an alternative method of determining surgical margin depths. Characteristic regressions were generated using a thresholding method on acquired time-domain fluorescence signals, which were used to convert time-domain data to a depth value. These were applied to an image space to generate a depth map of a modelled tissue sample. All modeling was performed on homogeneous media using Monte Carlo simulations, providing high accuracy at the cost of increased computational time. In practice, the imaging process should be completed within a span of under 20 minutes for a full tissue sample, rather than 20 minutes for a single slice of the sample. This thesis also explores the effects of different thresholding levels on the accuracy of depth determination, as well as the precautions to be taken regarding hardware limitations and signal noise.
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