Still Sitting on Men: Understanding the Continuities of Indirect Rule Through Pre-Colonial Forms of Female Resistance, Ethnic Power Politics and Economic Violence in Southeast Nigeria

This project exposes that Indirect Rule in Southeastern Nigeria has had direct, significant ramifications on the Political Economic Development of Nigeria through the present day

An Evaluation of the Impact of Models for Radio Propagation on the Simulation of 802.11b Wireless Networks

Working with an existing wireless network simulator, we describe the addition of both a method for modeling arbitrary terrain, and for calculating signal attenuation with the Irregular Terrain Model (ITM). We also investigate ITM\u27s effects on upper protocol layer in comparison to the Two-Ray Ground Reflection model. Upon examination, it was found that aside from the terrain between the transmitter and receiver, ITM\u27s various parameters are of little significance in the computed signal attenuation. Further, examination of the behavior of the upper protocol layers revealed that at high traffic levels, choice of propagation model can have significant effects on the results of the simulation

Home-made and improved apparatus and materials in general science instruction

Thesis (M.A.)--Boston University, 1936. This item was digitized by the Internet Archive

Design and evaluation of an instrumented microfluidic organotypic device and sensor module for organ-on-a-chip applications

2020 Summer.Includes bibliographical references.Organ and tissue-on-a-chip technologies are powerful tools for drug discovery and disease modeling, yet many of these systems rely heavily on in vitro cell culture to create reductionist models of tissues and organs. Therefore, Organ-on-chip devices recapitulate some tissue functions and are useful for high-throughput screening but fail to capture the richness of cellular interactions of tissues in vivo because they lack the cellular diversity and complex architecture of native tissue. This thesis describes the design and testing of 1) a microfluidic organotypic device (MOD) for culture of murine intestinal tissue and 2) a microfluidic sensor module to be implemented inline with the MOD for real-time sensing of analytes and metabolites. The MOD houses full-thickness murine intestinal tissue, including muscular, neural, immune, and epithelial components. We used the MOD system to maintain murine intestinal explants for 72 h ex vivo. Explants cultured in the MOD formed a barrier between independent fluidic channels perfused with media, which is critical to recapitulating intestinal barrier function in vivo. We also established differential oxygen concentrations in the fluidic channels and showed that more bacteria were present on the tissue's mucosal surface when exposed to near-anoxic media. The sensor module is a reversibly sealed microfluidic device with magnetic connections that can withstand high backpressures. Further, electrodes housed in commercial finger-tight fittings were integrated into the sensor module in a plug-and-play format. Future work will include developing electrochemical/optical sensors for various biological compounds relevant to intestinal physiology. Ultimately, the MOD and sensor module will be implemented in long-term microbiome studies to elucidate the relationship among microbial, epithelial, neuro and immune components of the gut wall in health and disease

Walkin’ On Air: Alter-G Gait Training in a Male with Hereditary Spastic Paraplegia

The purpose of this case report is to determine the effectiveness of LBPPS treadmill training, using the Alter-G, to improve the spatiotemporal parameters of gait for a patient with HSP.https://soar.usa.edu/flsaspring2018/1010/thumbnail.jp

Excavation of an Arctic Fox, Alopex lagopus, den by a Polar Bear, Ursus maritimus

We observed a Polar Bear (Ursus maritimus) excavating an Arctic Fox (Alopex lagopus) den on 24 June 1998, 3 km inland from the Hudson Bay coast (58°40'N, 93°12'W), near Cape Churchill in Wapusk National Park, Manitoba. To our knowledge this is the first observed excavation of an Arctic Fox den by a Polar Bear

Observations of Polar Bear Predatory Behaviour toward Caribou

A polar bear (Ursus maritimus) was observed unsuccessfully stalking and chasing caribou (Rangifer tarandus) in western Hudson Bay. Before chasing the caribou, the polar bear appeared to make use of wind direction and vegetation cover in order to move close to them. While there have been very few documented cases of the two species interacting, our observations indicate that polar bears will stalk and chase caribou.On a observé un ours polaire (Ursus maritimus) traquer et poursuivre sans succès le caribou (Rangifer tarandus) dans l'ouest de la baie d'Hudson. Avant de se lancer dans sa poursuite, l'ours polaire semblait s'aider de la direction du vent et du couvert végétal pour s'approcher des animaux. Bien que très peu de cas d'interaction des deux espèces aient été documentés, nos observations révèlent qu'en réalité les ours polaires traquent et poursuivent le caribou