Digital Commons Network^™

Lost Letters Of Lewis At The Lambeth Palace Library, Gregory Anderson

Sehnsucht: The C. S. Lewis Journal

Three recently discovered letters from C. S. Lewis provide a window through which we can observe the Oxford don as he is first coming into national prominence during, and immediately after, World War II. They are a 1942 letter from C. S. Lewis to Archbishop William Temple and two 1946 letters from him to Canon Lewis John Collins. Lewis is seen in these letters struggling with the issue of calling or vocation, and this gives us a glimpse into his decision making at critical times both in his career and in the life of his country.

Saving The Appearances? C. S. Lewis’ Critique Of Scientific Knowledge, Thomas Storck

Sehnsucht: The C. S. Lewis Journal

C. S. Lewis’ witty and insightful criticisms of scientism is well known.What has been less noted is the critique that he made in several places, not of scientism but of science itself, or rather of aspects of the scientific enterprise as carried on in the tradition of the scientific revolution brought about by such men as Galileo and Bacon. It is a critique of science and of scientific knowledge that is much deeper and more interesting than a mere exposé of simplistic scientistic fundamentalism, necessary as that is. Lewis not only exhibited a less than favorable attitude toward the technological …

“The Exact Programme A Particular Country Wishes To Have” : C. S. Lewis’ Literary Broadcast For Iceland, Suzanne Bray

Sehnsucht: The C. S. Lewis Journal

In December 2015, Harry Lee Poe created somewhat of a sensation by revealing that he had found, on eBay, a Joint Broadcasting Committee 78 rpm record with two out of four parts of a previously unknown talk given by C. S. Lewis to the people of Iceland during the Second World War, entitled “The Norse Spirit in English Literature.”2 At the beginning of the talk Lewis states that “he [does] not know why he ha[s] been asked to address the people of Iceland” and Harry Lee Poe admits that “how Lewis came to be recruited and by whom remains a …

In Memory: Brett C. Foster (1973-2015), Bruce R. Johnson

Sehnsucht: The C. S. Lewis Journal

No abstract provided.

In Memory: Bruce L. Edwards, Jr.(1952-2015), Crystal Hurd

Sehnsucht: The C. S. Lewis Journal

No abstract provided.

Frontmatter (Volume 10, Issue 1), Bruce R. Johnson

Sehnsucht: The C. S. Lewis Journal

No abstract provided.

Power, Pleasure, And Privilege: Defining Depauw’S Hookup Culture And Its Mental Health Implications, Reanna Stiehler '23

Senior Scholarly and Creative Symposium

Hookup culture is not primarily about sex, pleasure, connection, or freedom. Hookup culture is about power—how power is used, distributed, and desired. Previous work in hookup culture discusses a discourse of desire; however, the root and nature of this desire are unclear. I posit that hookup culture, as it currently exists, is strongly related to rape culture. In this thesis, I will explicate my anecdotal, qualitative, and quantitative evidence supporting this hypothesis.

This thesis provides an overview of what hookup culture is at a broad level. It then focuses more specifically on defining it at DePauw and considering the impact …

Women Who Kill: Providing And Justifying Alternative Legal Pathways To The Use Of Battered Women Syndrome As Self-Defense, Sara Das '23

Senior Scholarly and Creative Symposium

Legal scholars have been grappling with how to handle legal cases concerning battered women since the 70s. Lenore Walker argued that battered women have a condition called battered woman syndrome that alters their perceptions. The cases by themselves do not fulfill requirements for self-defense, a justification doctrine nor duress, an excuse doctrine. I argue that battered women should be excused, not through using battered women syndrome to support pre-existing claims, but instead by using other psychological research to support Morse’s partial excuse doctrine. The first part of the paper argues why battered woman syndrome does not work as a psychological …

Curt Flood V. Major League Baseball: The Intersection Of Race And Labor In America, Jack Fitzgerald '23

Senior Scholarly and Creative Symposium

On October 6, 1969, long-time St. Louis Cardinals' center fielder Curt Flood was traded to the Philadelphia Phillies. The Major League Baseball labor system bound a player to one team, with the team being able to trade players at will and set their salaries. Flood, who was involved with entrepreneurial and philanthropic efforts in St. Louis, rejected his trade to Philadelphia and sued Major League Baseball. This paper examines the implications of Curt Flood’s lawsuit against Major League Baseball on sports labor and compares that to other labor movements in the United States. It argues that Curt Flood’s legacy must …

Hymenachne Amplexicaluis [(Rudge) Nees] Genetic Resources Collection In México, A Suitable Grass For Flood Plains In Tropical Areas, J. F. Enriquez-Quiroz, A. R. Quero-Carrillo, J. Perez-Perez, A. Hernandez-Garay, E. Garcia-Moya

IGC Proceedings (1977-2023)

Hymenachne amplexicaluis [( Rudge ) Nees; 2n= 2x= 24; Azuche, West Indian marsh grass] is a native Central and South America C₃ grass that grows well under intermittent flooding conditions. It produces good seed set and stolons to thrive on new areas assuring its survival, combined with an efficient N metabolism to promote vigorous new growing leaves and tillers (Antel et al., 1998). Azuche is a dual attribute species when introduced to new areas; it has valuable forage attributes but also is a potential weed (Hill, 2000). As Azuche is a native species, one must deal with in …

Critical Analysis Of Tropical Forage Breeding In Brazil, J. A. Usberti Jr., P. B. Alcantara

IGC Proceedings (1977-2023)

Forage grasses account for 90% of the Brazilian forage seed market while the genera Brachiaria, Panicum and others are responsible for 85, 10 and 5% of the traded grass seeds, respectively. Most of the forage grass and legume cultivars available for sowing in Brazil were selected in germplasm banks during the last 20 years, while few of them were derived from artificial crossings, followed by selection for desirable forage traits. The selection of new genetic materials in germplasm banks (exploitation of naturally-occurring genetic variability) is still feasible but the chances of success are decreasing through time. From now on, …

Book Review: Under The Weather: Reimagining Mobility In The Climate Crisis., Raymond Murphy

Critical Disaster Studies

Under the Weather: Reimagining Mobility in the Climate Crisis is an insightful, important book that reports on a fine-grained investigation Sodero made of the consequences and response to the disasters resulting from Hurricane Juan in Nova Scotia in 2003 and Hurricane Igor in Newfoundland in 2010, with comparisons to Hurricane Sandy in New York, Hurricane Katrina in New Orleans, Hurricane Maria in Puerto Rico, the 1998 ice storm in northeastern North America and the Icelandic ash cloud. One original feature is the focus on mobility, how indispensable it is in modern societies, how it is disrupted by extreme weather, and …

Zirconia Vs Pfm For Long Span Fpds, Aayushma Hamal, Hajira Virk, Varun Sehgal, Priya Prasannakumar, Patrick Pansoy

Excellence Day

To compare distinct characteristics of the restorative materials i.e., Zirconia and PFM for long-span FPDs.

Polymer Chemistry Of Dental Adhesives, Alia Rubaie

Excellence Day

Dental adhesives are water soluble, non-toxic materials that bind composite resins to dentin and enamel. Adhesive systems are dependent on a polymerization process at the interface and require different moieties to prepare the substrate to effectively interact with the tooth surface. Due to their critical role in restorative procedures, many chemists are interested in strengthening the adhesive bond strength at the interface. The review paper I published in the Pacific Journal of Health covers the evolution of dental adhesive systems over time and provides an extensive overview of what components make up a dental adhesive system. Additionally, the article explores …

Orofacial Pain Classification Diagnostic Tool, Anglea Chen

Excellence Day

This diagnostic tool was created to assist dental professionals in diagnosing orofacial pain conditions including trigeminal neuralgias, neuropathic pain, and idiopathic pain. The goal is for practitioners of all experience levels to be able to quickly and accurately diagnose these conditions.

Inferior Alveolar Nerve Block In Pediatric Patients: Quantitative Assessment, Elisa Wang, Kelly Fong, Taylor Pearl, Sahar Rahnemabayat

Excellence Day

Pediatric inferior alveolar nerve block landmarks are poorly defined and quantitative assessments of their efficacy are unavailable. We assessed landmarks/planes employed in pediatric IA blocks, and a new landmark, to establish their value.

Literature Review: Gingival Retraction Systems For Indirect Restorations, Fotima Jaludi, Nurain Rehman, Priyanka Unnam, Jim Milani

Excellence Day

Fixed prosthodontics requires accurate impressions to record the finish lines, which is instrumental for the success of a single crown or fixed dental prosthesis. If the finish line is adjacent to or below the gingival margin, an adequate amount of gingival retraction is necessary to capture the impression that will help the lab in delivering a therapeutic, preventive, and esthetically stable restoration. This review discusses the different gingival retractions methods to achieve maximum hemostasis and retraction for successful indirect restorations.

Shear Bond Strength Of Chemically-Cured And Light-Cured Bulk Composites As Different Temperatures, George Ibrahim, Ryan Conlon

Excellence Day

The purpose of this study is to compare the shear-bond strength of a chemically-cured bulk composite and a light-cured bulk composite. The chemically-cured bulk composite was delivered at room temperature. The light-cured composite was delivered at room temperature and at 155 degrees Fahrenheit. The null hypothesis is that there is no difference among the three groups.

Gingival Crevicular Flow (Volume) As A Biomarker Of Orthodontic Tooth Movement, Harrison Truman, Nina Stevens, Tyler Starley

Excellence Day

Tooth movement is caused by the application of force. In short, applied force strains structures present in the PDL space – cells, ligaments, blood vessels. Cells in the PDL are damaged by extension and by diminished oxygen supply due to compression of blood vessels. Compounds released from damaged or dead cells trigger an innate inflammatory response. One of the biomarkers of that response is increased formation of extracellular fluid (edema), specifically gingival crevicular fluid (GCF). Our goal is to monitor changes of GCF flow during the orthodontic treatment with Invisalign.

Hazardous Noise Level Measured In A Dental Clinic: A Comprehensive Study, Isabella P. Gantman, Nico Scordakis, Samantha Rodriguez, Emily Bernard, Bina Surti, Karen A. Schulze, Fadi Najem, Joing Hu

Excellence Day

This project intends to determine the amount of long term noise exposure to dentists in the modern-day dental environment. By systematically conducting noise collection within a standard dental environment, the institution can identify ways to minimize the amount of noise within the dental environment. This will provide new instruments and or resources to dentists to mitigate the overall risk of dental health professionals in relation to hearing loss over time.

Screw Loosening In Cast-To-Ucla Abutment Versus Cad-Cam Abutment Design In Last Five Years: A Retrospective Cohort Study, Jasdeep Kaur Cheema, Steven Sadowsky

Excellence Day

In recent years, the use of screw retained implant supported prostheses has increased compared with cement-retained designs because of its biological advantages and retrievability. The UCLA castable abutment has been the mainstay for screw-retained porcelain fused to metal (PFM) implant crowns. It consists of a plastic cylinder that connects to the abutment which can be customized by waxing and casting using base or noble metal alloy. While PFM implant crowns using the UCLA abutment allows for minimal interocclusal space (5 mm) unlike other screw-retained designs, it has been linked to increase in mechanical complications such as screw loosening and screw …

Comparison Of Zirconia And Lithium Disilicate As A Restorative Material, Jemima Chatla, Urvi Sanghvi, Elham Shakeri

Excellence Day

Background: Zirconia and Lithium disilicate have been widely utilized in dental restorations for both partial and full coverage procedures, employing monolithic and layered methods. Objective: The aim of this literature review was to assess these materials and compare them based on various criteria, such as tooth preparation, bonding techniques, optical and mechanical properties, clinical performance, biocompatibility, marginal fit and adaptation. Additionally, this review also compared the clinical applications of these materials in different types of restorations including full and partial coverage restorations, implants, fixed partial dentures, and endocrowns.

Accuracy Of 3-D Automated Landmark Identification On Cone-Beam Computed Tomography, Joyce Choi, Jake Nealon

Excellence Day

To evaluate the accuracy of a fully automated landmark identification (ALI) system as a tool for automatic landmark location compared with human judges. Materials and

Traditional Vs Resin Cements For Indirect Restorations, Parveena Ganesh, Dhruvesh Gupta, Parveen Poliki, Tanvir Singh

Excellence Day

Indirect restorations, such as inlays, onlays, crowns, and bridges, require a reliable cementation method to ensure long-term success. Aim of this literature is to compare various cementation options that are available, advantages and disadvantages of different materials using conventional cementation or adhesive cementation .Also this discusses the rationale in selecting the choice and techniques in different clinical situations. In conclusion, both traditional and resin cements have their advantages and disadvantages for indirect restoration cementation. The choice of cement type depends on the clinical situation and the preferences of the clinician. Traditional cements may be preferred in situations where high bond …

Replacement Of Missing Teeth: Fpd Vs Implants Vs Removable Prostheses, Pooja Bashyal, Andrew Lee, Maninder Singh

Excellence Day

This literature review strives to understand different treatment modalities for replacing missing teeth, specifically, considerations for choosing between implants, bridges, and removable dentures.

Treatment Of Deep Bite Using Clear Aligner Therapy, Robert Zhou, Mahban Zarei

Excellence Day

Background: Deep bite is a type of malocclusion that can lead to problems with bite, mastication, speech, and has the potential to damage teeth and gums. While conventional orthodontic treatments have been shown to be effective in addressing this condition, the use of clear aligners for this purpose has not been fully explored in the current scientific literature. Objective: The objective of this retrospective longitudinal study is to evaluate the treatment effects of clear aligners in patients with deep bite malocclusion by examining the dental and skeletal changes between the initial and final treatment time points. Our null hypothesis states …

Adhesion And Minimally Invasive Dentistry, Sana Mohd, Javid Shaikh, Vidhi Bhuva, Vishwash Patel

Excellence Day

G. V. Black, the father of modern dentistry believed in extension for prevention. Today we have come a long way. We practice minimally invasive dentistry which is possible because of adhesion. We have eight generations of bonding systems. 4th generation is the gold standard, while 6th ,7th and 8th are used extensively. Direct restorations which involve minimally invasive procedure alternatives for carious lesion management, include the use of sealants, infiltration, atraumatic restorative treatment (ART), and selective carious tissue removal (e.g., indirect pulp capping, stepwise removal, or selective removal to soft dentine). Due to adhesion and the invention of higher quality …

A Review Of External Cervical Resorption, Sarah Makkiyah, Max Kazantcev

Excellence Day

Invasive cervical resorption (ECR) is a complex form of external resorption. It is distinguished by its localization, its invasive nature, and the formation of a mineralized replacement tissue resembling cellular cementum. During initiation of ECR, the portal of entry is the cementum below the gingival epithelium, and resorption starts with localized destruction and removal of PDL. Response to PDL injury includes formation of a blood clot and inflammation, followed by granulation tissue, recruitment of macrophages, and multinucleated-cell differentiation.

Three-Dimensional Analysis Of Nasoalveolar Molding Treatment (Nam) Effects In Unilateral Cleft Lip, Alveolus, And Palate Patients, Sophie Dipietro, Meghan Hansen, Yoon Weon Suh

Excellence Day

Background: NAM therapy is a non-surgical method that aims to improve both the aesthetic and functional outcomes of cleft lip and palate treatment in newborns. It applies controlled pressure to the cleft region, allowing for the reshaping of the area. However, further research is necessary to gain a deeper understanding of the underlying factors that influence cleft palate closure patterns and identify the regions that play the most significant role in approximating clefts. Objective: The aim of this study was to assess the impact of pre-surgical nasoalveolar molding (NAM) on infants with unilateral cleft lip and palate, with a hypothesis …

3d Printing In Restorative Dentistry, Sucharu Ghosh, Mahban Zarei, Parul Kumar, Priya Prasannakumar, Patrick Pansoy

Excellence Day

The term 3 D printing is generally used to describe a manufacturing approach that builds objects one layer at a time, adding multiple layers to form an object The presentation aims to provide a comprehensive understanding of the use of 3 D printing technology in restorative dentistry and its potential impact on the field