This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

Transience: The Music of Taylor Ambrosio Wood. Track Five. This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

Transience: The Music of Taylor Ambrosio Wood. Track Six. This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

Specimen exposed during 1993 flood. Discovered in creek bed by Bob and Sonia Athen in 2001. Tiemann specimens recovered from under cut bank. Athen specimens in creek bed or under south bank. Specimens from this site include: Megalonyx jeffersoni 101037 (adult), 102849 (juvenile), 130544 (infant), and Paramylodon harlani 116925.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

A man and a woman explore the tension and eroticism of learning amid the lonely geometry of a library’s books and chairs. With an original score by the contemporary British composer Peter Mauder.

Supplements "Simulation of Three-Dimensional Dusty Plasmas" IEEE Transactions on Plasma Science, v. 42, no. 10, Oct. 2014, p.2686-87. DOI: 10.1109/TPS.2014.2321324

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

Individuals must predict future events to proactively guide their behavior. Predicting when events will occur is a critical component of these expectations. Temporal expectations are often generated based on individual cue-duration relationships. However, the durations associated with different environmental cues will often co-vary due to a common cause. We show that timing behavior may be calibrated based on this expected covariance, which we refer to as the 'common cause hypothesis'. In five experiments using rats,...

3,3’,4,4’,5-pentachlorobiphenyl (PCB126), a dioxin-like PCB, elicits toxicity through a wide array of non-carcinogenic effects, including metabolic syndrome, wasting, and non-alcoholic fatty-liver disease (NAFLD). Previously, we reported decreases in the transcription of several enzymes involved in gluconeogenesis, before the early onset of lipid accumulation. Hence, this study was aimed at understanding the impact of resultant decreases gluconeogenic enzymes on growth, weight and metabolism in the liver, upon extended exposure. Male Sprague-Dawley rats (75-100 g), fed a...

Various insects engage in microbial mutualisms in which the reciprocal benefits exceed the costs. Ants of the genus Camponotus benefit from nutrient supplementation by their mutualistic endosymbiotic bacteria, Blochmannia, but suffer a cost in tolerating and regulating the symbiont. This cost suggests that the ants face secondary consequences such as susceptibility to pathogenic infection and transmission. In order to elucidate the symbiont’s effects on development and disease defence, Blochmannia floridanus was reduced in colonies of...

In week-old rats, somatosensory input arises predominantly from external stimuli or from sensory feedback (reafference) associated with myoclonic twitches during active sleep. A previous study suggested that the brainstem motor structures that produce twitches also send motor copies (or corollary discharge, CD) to the cerebellum. We tested this possibility by recording from two precerebellar nuclei—the inferior olive (IO) and lateral reticular nucleus (LRN). In most IO and LRN neurons, twitch-related activity peaked sharply around twitch...

Why and how sexual reproduction is maintained in natural populations, the so-called “queen of problems”, is a key unanswered question in evolutionary biology. Recent efforts to solve the problem of sex have often emphasized results generated from laboratory settings. Here, we use a survey of representative “sex in the wild” literature to review and synthesize the outcomes of empirical studies focused on natural populations. Especially notable results included relatively strong support for mechanisms involving niche...

Necrotizing enterocolitis (NEC) remains the leading cause of gastrointestinal morbidity and mortality in premature infants. Human and animal studies suggest a role for Paneth cells in NEC pathogenesis. Paneth cells play critical roles in host-microbial interactions and epithelial homeostasis. The ramifications of eliminating Paneth cell function on the immature host-microbial axis remains incomplete. Paneth cell function was depleted in the immature murine intestine using chemical and genetic models, which resulted in intestinal injury consistent with...

Organisms featuring wide trait variability and occurring in a wide range of habitats, such as the ovoviviparous freshwater New Zealand snail Potamopyrgus antipodarum, are ideal models to study adaptation. Since the mid-19th century, P. antipodarum, characterized by extremely variable shell morphology, has successfully invaded aquatic areas on four continents. Because these obligately and wholy asexual invasive populations harbor low genetic diversity compared to mixed sexual/asexual populations in the native range, we hypothesized that 1) this...

This project was completed for the Doctor of Music Arts degree at the University of Iowa School of Music.

Fast synaptic inhibition in the nervous system depends on the transmembrane flux of Cl- ions based on the neuronal Cl- driving force. Established theories regarding the determinants of Cl- driving force have recently been questioned. Here we present biophysical models of Cl- homeostasis using the pump-leak model. Using numerical and novel analytic solutions, we demonstrate that the Na+/K+-ATPase, ion conductances, impermeant anions, electrodiffusion, water fluxes and cation-chloride cotransporters (CCCs) play roles in setting the Cl-...