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Heterotrophic Carbon Fixation in a Salamander-alga Symbiosis
Get PDFThe unique symbiosis between a vertebrate salamander, Ambystoma maculatum, and unicellular green alga, Oophila amblystomatis, involves multiple modes of interaction. These include an ectosymbiotic interaction where the alga colonizes the egg capsule, and an intracellular interaction where the alga enters tissues and cells of the salamander. One common interaction in mutualist photosymbioses is the transfer of photosynthate from the algal symbiont to the host animal. In the A. maculatum–O. amblystomatis interaction, there is conflicting evidence regarding whether the algae in the egg capsule transfer chemical energy captured during photosynthesis to the developing salamander embryo. In experiments where we took care to separate the carbon fixation contributions of the salamander embryo and algal symbionts, we show that inorganic carbon fixed by A. maculatum embryos reaches 2% of the inorganic carbon fixed by O. amblystomatis algae within an egg capsule after 2 h in the light. After 2 h in the dark, inorganic carbon fixed by A. maculatum embryos is 800% of the carbon fixed by O. amblystomatis algae within an egg capsule. Using photosynthesis inhibitors, we show that A. maculatum embryos and O. amblystomatis algae compete for available inorganic carbon within the egg capsule environment. Our results confirm earlier studies suggesting a role of heterotrophic carbon fixation during vertebrate embryonic development. Our results also show that the considerable capacity of developing A. maculatum embryos for inorganic carbon fixation precludes our ability to distinguish any minor role of photosynthetically transferred carbon from algal symbionts to host salamanders using bicarbonate introduced to the egg system as a marker
Music Terminology and Context in Robert Browning’s “A Toccata of Galuppi’s”
Get PDFIn his poem describing a performance of a Baldassare Galuppi toccata, Robert Browning uses music theory terminology and historical context to explain the emotions inspired by the piece. Browning’s 19th-century narrator reflects on the lives of past audiences and on his own mortality as he addresses the deceased composer. This paper analyzes the use of musical references in explaining the narrator’s response to the performance. The analysis includes an examination of Galuppi’s compositional period and a discussion of the specific terminology that Browning uses to convey his narrator’s wariness of death
Teletherapy Use in Children’s Advocacy Centers: An Effective Solution Amidst the Covid-19 Pandemic
Get PDFThe Covid-19 pandemic has affected people’s lives in unprecedented ways. Concerns about social distancing have resulted in the cancellation of therapy and doctor’s appointments, leaving those with serious mental health issues without treatment. The need for social distancing amidst the pandemic has particularly affected children seeking treatment from Children’s Advocacy Centers (CACs), many of whom have witnessed or experienced abuse. In order to treat children who cannot physically go to a center, many CACs have begun using teletherapy, which is the use of interactive, synchronous technology to provide counseling services. The Adams County Children’s Advocacy Center in Gettysburg, Pennsylvania has found teletherapy to be a highly effective method of aiding children during the pandemic and plans on continuing the use of teletherapy services for families who encounter barriers to in-person treatment. Ultimately, the use of telehealth to deliver therapy services has become imperative in the face of the Covid-19 pandemic, and has been effectively utilized in Children’s Advocacy Centers, including the Adams County Children’s Advocacy Center
Examining the Relationship Between Legal Origin and Levels of Economic Globalization
Get PDFState institutions that came into being centuries ago have taken on different roles in the post-World War II period of globalization. These institutions may have changed significantly as their roles have become greater to accommodate participation in the global political economy. The theory I develop in this paper indicates that the legal origins of a state continue to have a relationship with its current level of economic globalization. This theory is based on previous research produced by several other scholars. My research focuses on the English common law origin and I hypothesize that countries with this legal origin are more likely to experience higher levels of economic globalization than countries with alternative legal origins. The evidence I introduce supports this hypothesis
For Life or Choice: Abortion Views in America
Get PDFAbortion is one of the most controversial political topics in the United States of America at any point in time. In an election year, it is even more so. Countless Americans choose who to vote for based on whether or not the politician is pro-life or pro-choice. But why do some Americans vote pro-choice or pro-life? What variables affect their beliefs on abortion and how strong are those variables in relation to others? This paper dives into the ways in which education and religion affect abortion opinions and researches the strength of those variables in relation to one another. In this paper, I found that both education and religious importance are important variables in determining one’s probability of being pro-choice and that religious importance has a more powerful effect when the two interact. This paper paves the way for other political scientists to see how other variables such as age and gender interact with education or religion to predict one\u27s abortion opinions
JCCTL Mailer - July 16, 2020
Get PDFUpdates on training and support and useful pedagogical resources compiled and sent by the JCCTL on July 16, 2020.
Contents:
Reading Suggestions Thoughts on pragmatic and applied strategies to engage students in the classroom Are multiple-choice questions appropriate assessments of learning? Collaborative note-taking Small teaching online
Announcements Teaching and Learning Online JPI Planning Timeline Basic Moodle Training
Upcoming Events Workshops on Inclusivity in the classroom and trauma-informed pedagogy Camera/document camera equipped classroom demonstration Microsoft Teams demonstratio
JCCTL Mailer – August 3, 2020
Get PDFUpdates on training and support and useful pedagogical resources compiled and sent by the JCCTL on August 3, 2020.
Contents:
Weekly Updates Slides on trauma-informed teaching strategies JCCTL Resilient Pedagogy Grant Creating inclusive curricula
Reading Suggestions Siena College report on physically distanced classroom Karen Costa\u27s post on trauma-informed teaching Comprehensive guide on trauma-informed practices in post-secondary education
Upcoming Events Exploring Research-Based, Inclusive Curricula for the Online or In-Person Classroom IT classroom training sessions Microsoft Team training Introductory Zoom training Ensemble Video Training Frustrated with Forums?
Other Announcements Teaching and Learning Online Basic Moodle trainin
JCCTL Mailer – August 19, 2020
Get PDFUpdates on training and support and useful pedagogical resources compiled and sent by the JCCTL on August 19, 2020.
Contents:
Suggested Readings Party Like Your Life Depends On It Online Tools for Student Collaboration Avoid Zoom Fatigue
Other Resources Effective Anti-Racist Teaching Diversity and Inclusion Syllabus Statements Becoming an Anti-Racist Educator Anti-Racism and Allyship in the Classroo
Additive Modulation of DNA-DNA Interactions by Interstitial Ions
Get PDFQuantitative understanding of biomolecular electrostatics, particularly involving multivalent ions and highly charged surfaces, remains lacking. Ion-modulated interactions between nucleic acids provide a model system in which electrostatics plays a dominant role. Using ordered DNA arrays neutralized by spherical cobalt3+ hexammine and Mg2+ ions, we investigate how the interstitial ions modulate DNA-DNA interactions. Using methods of ion counting, osmotic stress, and x-ray diffraction, we systematically determine thermodynamic quantities, including ion chemical potentials, ion partition, DNA osmotic pressure and force, and DNA-DNA spacing. Analyses of the multidimensional data provide quantitative insights into their interdependencies. The key finding of this study is that DNA-DNA forces are observed to linearly depend on the partition of interstitial ions, suggesting the dominant role of ion-DNA coupling. Further implications are discussed in light of physical theories of electrostatic interactions and like-charge attraction
Peeps Like a River
No full textIn celebration of National Library Week 2020, Musselman Library held its seventh annual Edible Book Festival, which was held virtually due to the campus closure. Library staff, faculty, and students created many book-inspired treats to share with the campus community via social media. Entrants were awarded prizes in the categories of best look, punniest, best use of limited quarantine supplies, and best in show. The above creation, by Meggan Smith, won for Punniest .https://cupola.gettysburg.edu/edible/1118/thumbnail.jp