4,955 research outputs found
Photodegradation Illuminated: New analytical tools for studying photochemical processes
Get PDFThe study of photodegradation processes concerns many fields, including those of cultural heritage, the food industry, and water purification. In each of these areas, different questions concerning photodegradation arise, but generally, they are related to either (i) the prevention of photodegradation aiming to avoid loss or change of properties, such as color, taste or smell, or (ii) the exploitation of photodegradation for removal of potentially harmful compounds in, e.g., drinking water. Studying light-induced degradation (LID) reactions is challenging and often it is difficult to establish a strong link between the degradation and the starting products. Several techniques and approaches for studying photodegradation had been developed previously, but these can be laborious and prone to errors. A solution to this could be found in a comprehensive, automated device that enables simultaneous sample irradiation of compounds in solution and chemical analysis in real-time and after photodegradation. The need for such an analytical platform is clarified in Chapter 1. The ‘Toolbox for studying the Chemistry Of Light-induced Degradation’ (TooCOLD) project envisioned to develop an integrated device. It would encompass a light-exposure cell, allow in-situ spectroscopic monitoring of the irradiated sample and on-line coupling to liquid chromatography (LC) with diode array detection (DAD) and mass spectrometry (MS) for direct identification of degradation products formed during irradiation. This thesis describes the step-wise development of such an automated device employing a gas-permeable liquid-core waveguide (LCW) as a light-exposure cell, a sample handler, a spectrograph for in-situ absorption spectroscopy, and switching valves for coupling to LC-DAD-QTOFMS. The full device was applied to study the photodegradation of several compounds to evaluate and demonstrate its analytical performance. Ideally, parameters that affect photodegradation should be known to aid the design of a system that can be used to study photodegradation in the broadest sense. Chapter 2 describes the many parameters that can influence the photodegradation of dyes and pigments in solution and on a substrate. The light-exposure cell developed in this project was based on an LCW, which employs the principle of total internal reflection (TIR) to irradiate the sample from within in contrast to using perpendicular illumination. Chapter 3 reviews the different types of LCWs that are available and applicable as a photoreactor and for chemical analysis. The analysis of complex mixtures resulting from photodegradation may be challenging as the chemical properties of the components can vary greatly. Chapter 4 describes the development of a generic LC-DAD method for the analysis of natural and synthetic dyes. Chapter 5 describes the development and overall performance of a low-volume LID cell based on a gas-permeable LCW made of Teflon AF2400 connected to a spectrograph, allowing the collection of spectral data in real-time. All of the abovementioned results were included in the design of a full prototype of an LID-cell based device. Chapter 6 describes the analytical performance of the fully automated system coupled to LC-DAD. Chapter 7 describes the study to the effect of oxygen on the photodegradation of Riboflavin and EY using the final prototype of the device coupled to LC-DAD-QTOFMS. The feasibility of Raman spectroscopy for studying changes in the molecular structure during irradiation was assessed in several exploratory subprojects, discussed in Chapter 8. Surface-enhanced Raman spectroscopy (SERS) using silver colloids was compared to on-chip SERS monitoring during the photodegradation of CV using leaning pillar chip substrates. Finally, carbon paper was used as a gas-permeable SERS substrate for the implementation inside a microfluidic device. Finally, Chapter 9 contains conclusions on the work covered in Chapters 1 to 8, discussing several relevant aspects and providing perspectives on future use of the developed system, optimization strategies, and possible new application areas
Epistolary Communication in Iris Murdoch's Novels
No full textThis paper investigates the narrative functions of deceitful letters in Iris Murdoch’s The Black Prince. The presentation includes extracts from the aforementioned novel, which is analysed in the context of Murdoch’s own views on epistolary communication and her philosophical meditations on language and morality. Across a range of Murdoch's novels, I explore the common motives behind disingenuous letters, their implications on interpersonal relationships, and the transmissional shortcomings of the epistolary medium.
To illuminate Murdoch’s communicative ethos as a prolific correspondent, this project refers to the compositional traits that Peter J. Conradi ties to her early ‘epistolary habit’ in Iris Murdoch: A Life and consult various letters exchanged between the author and her intimate relations in Living on Paper: Letters from Iris Murdoch: 1934–1995.
In order to understand Murdoch’s stance on the association between ethics and language, I plan to review her layered perspectives on Ludwig Wittgenstein's Tractatus Logico-Philosophicus. I refer to Murdoch’s response to Wittgenstein in 'Thinking and Language' (1951), 'Vision and Choice in Morality' (1956) and her 1972 Blashfield Address ‘Salvation by Words’, and Metaphysics as a Guide to Morals (1992). Finally, I will consider Murdoch’s modification of Weil’s concept of ‘attention’ in ‘The Idea of Perfection’ and ‘Vision and Choice in Morality’ to understand how moral selection pre-empts epistolary projection
Author-SIMING_ZHENG-20190923--UNIVERSITY OF TEHRAN IRIS IMAGE REPOSITORY--UTIRIS-RGB Original Images
No full textThere are 806 RGB eye(iris) images
Iris setosa (Labrador Iris) : Labrador Iris
No full textClass: Monocotyledoneae
Family: Iridaceae
Genus: Iris
Species: setos
Author Siming Zheng-Experimental Iris Images--IRIS V.1
No full textUniversity of Tehran IRIS (UTIRIS) image repository is the first iris biometric databank registered in two distinct sessions of Visible Wavelength (VW) and Near InfraRed (NIR) imaging during 24-27th of June 2007
Iris from the ground up: A modular foundation for higher-order concurrent separation logic
Get PDFIris is a framework for higher-order concurrent separation logic, which has been implemented in the Coq proof assistant and deployed very effectively in a wide variety of verification projects. Iris was designed with the express goal of simplifying and consolidating the foundations of modern separation logics, but it has evolved over time, and the design and semantic foundations of Iris itself have yet to be fully written down and explained together properly in one place. Here, we attempt to fill this gap, presenting a reasonably complete picture of the latest version of Iris (version 3.1), from first principles and in one coherent narrative.Accepted Author ManuscriptProgramming Language
Iris Magazine: Worship
Get PDFPoetry
“Sunlight” by Lili Gorley
Author bio: Lili Gourley is a creative writing major at Geneseo with a concentration in poetry. She often finds her muse in music and nature. She hopes to work in the publishing industry someday.
Trigger warning: non-violent death
“Craft” by Lidabel Avila
Author bio: Lidabel Avila (she/her)
Trigger warning: N/A
“The Finale” by Liz Louie
Author bio: Liz Louie is an author of all things you don’t want to find in your closet. She is currently working towards a BA from SUNY Geneseo in Creative Writing. She has been published in Catharsis Magazine, and enjoys spending time watching scary movies and riding horses.
Trigger warning: abuse, minor gore, violence
“Imago Therapy” by Isaac Schiller
Author bio: Isaac Schiller (he/him)
Description: Imago Therapy: Untangle those attachment wounds you developed in childhood! Look in the mirror. Do you see your parents hiding inside your face? Take a pen and draw over it until your face no longer belongs to anyone.
Trigger warning: N/A
“Every Eve” by Tess Woitaszek
Author bio: Tess Woitaszek is a senior at Geneseo and part of a creative writing program, in which she focuses on poetry and creative short fiction.
Trigger warning: N/A
“Holy” by Tess Woitaszek
Author bio: Tess Woitaszek is a senior at Geneseo and part of a creative writing program, in which she focuses on poetry and creative short fiction.
Trigger warning: N/A
Visual art
“Worship” by Noel Guidry
Author bio: Noel Guidry (he/him)
Description: This piece depicts three figures praying to an ethereal figure of light.
Trigger warning: N/A
“The Adoration of the Magi” by Noel Guidry
Author bio: Noel Guidry (he/him)
Description: Depicts a nativity scene where the three kings, depicted in black, are seeing the baby jesus for the first time.
Trigger warning: N/A
“The Journey of the Magi” by Noel Guidry
Author bio: Noel Guidry (he/him)
Description: Depicts the three wise men riding across the Arabian Desert on camelback.
Trigger warning: N/A
“The Witches Tree” by Kaitlin Anzalone
Author bio: Kaitlin Anzalone (she/her)
Description: It was once believed that a spirit could be trapped in a wine bottle. People began hanging glass bottles on dead tree branches in hopes that a spirit would become trapped and the morning sun would neutralize the spirit.
Trigger warning: N/A
Untitled by Kaitlin Anzalone
Author bio: Kaitlin Anzalone (she/her)
Description: Children tend to worship the ground older individuals walk on. We should slow down and do the reverse.
Trigger warning: N/A
Untitled by Jillian Orr
Author bio: Jillian is a junior sociomedical sciences major who loves drawing, watching the leaves change color, and cookie dough ice cream.
Trigger warning: N/A
Creative writing
“Gender Nonconformity in Northanger Abbey and a Partisan Narrator’s Sympathy” by Matt Keller
Author bio: Matt Keller is a senior English major concentrating in Creative Writing. He has previously been published in MiNT magazine and is President of the Creative Writing Club at Geneseo. The piece is a type of creative nonfiction lyric essay known as a “hermit crab essay.” It takes the disguise, or shell, of a literary analysis, hiding the narrator’s perspective within. As the narrator discovers more about himself as he discovers more about the characters of Northanger Abbey.
Trigger warning: N/A
“Ostinato; Prometheus’ Refrain” by Jackson Faulkner
Author bio: Jackson Faulkner (he/they)
Description: A conversation on love, worship, myth, and revival.
Trigger warning: deathhttps://knightscholar.geneseo.edu/glm-iris/1006/thumbnail.jp
Iris Murdoch and Artistic Inspiration Iris Murdoch Society Podcast
No full textIn this episode Miles is joined by artists Kevin Petrie (University of Sunderland), Matthew Richardson (University of Kingston) and Carol Sommer to discuss their latest work which has been inspired by Murdoch's writing.
Kevin Petrie is Head of the School of Art and Design and Professor of Glass and Ceramics at University of Sunderland. He is known for his artwork on ceramics and glass, especially in combination with printmaking and drawing. Kevin has also written and edited a number of books and articles about ceramics and glass and lectured around the World. Kevin’s artwork is held in a number of private and public collections including National Glass Centre and National Museums of Scotland. In recent years, Kevin has focused on his painting practice and this work can be seen on his website at kevinpetrieart.com.
Matthew Richardson is an artist and illustrator who works across physical and digital media seeing how things fit or collide through processes of collage and assemblage. He is interested in how, why and what is kept or discarded, lost or found, and left behind. He studied at Central St. Martins and Cardiff University and is currently completing a practice-based PhD at Kingston School of Art, titled Para-illustration: Gaps, fragments and spaces of the literary imagination, which explores the materiality of a writer’s notes, drafts and archives as a method for making literary images.
matthew-richardson.co.uk/
Carol Sommer visual artist and art educator based in Darlington, Co. Durham. I’m interested in the potential of piracy to interrogate value systems. Sometimes within the aesthetic context of conceptual writing, my practice includes making books, videos, performances, installation and an Instagram account @cartography_for_girls. In 2019 I completed a practice led Ph.D. at Leeds Beckett University, and I am the author of ‘Cartography for Girls, an A-Z of Orientations Identified within the Novels of Iris Murdoch’. Her work is currently being exhibited at the Phoenix Art Space in Brighton until the 19th November as part of the ‘Are you a Woman in Authority’ exhibition. www.carolsommer.net/
www.phoenixbrighton.org/Events/are-yo…in-authority
Jake and Iris Burritt Residence
No full textPhotograph - Jake and Iris Burritt residence, Athabasca, Alberta was built in 191
Article about Iris Murdoch
No full textArticle about 1969, 1970 and 1973 Booker shortlisted author Iris Murdoch's failure to win Booker Priz
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