8 research outputs found

    Nautical Research Platform for Water-Bound Experiments

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    Conducting research in lakes and rivers requires large crews and heavy-duty equipment, making even simple tests more costly and time consuming. Newer research methods are evolving constantly as new technology enables more precise and accessible experiments to be conducted. The need for simple execution of water-bound experiments exists and must be addressed to aid our understanding of these environments. We at the Microgravity Undergraduate Research Team have taken our previous research in autonomous Unmanned Surface Vehicles (USVs) and applied our efforts to relieving this problem. Our current research aims to provide a universal platform for research and experiments to be conducted in lakes and rivers, where we can then expand our efforts to more broad applications. The design allows for remote-control navigation by one user and easy portability. To address precision in experimentation, we have integrated autonomous GPS waypoint navigation which removes user error in sensitive measurements. The most important factor in its design is modularity; the ability to accommodate a wide range of equipment for research. Our platform succeeds in making water-bound experiments more accessible and more precise for a multitude of potential applications

    Neurogenic pulmonary edema

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    Estimation of right atrial and ventricular hemodynamics by CT coronary angiography.

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    BACKGROUND: Computed tomography coronary angiography (CTCA) provides an accurate noninvasive alternative to the invasive assessment of coronary artery disease. However, a specific limitation of CTCA is inability to assess hemodynamic data. OBJECTIVE: We hypothesized that CTCA-derived measurements of contrast within the superior vena cava (SVC) and inferior vena cava (IVC) would correlate to echocardiographic estimations of right atrial and right ventricular pressures. METHODS: Medical records of all patients who underwent both echocardiography and CTCA in our center were reviewed (n = 32). Standard CTCA was performed with a 64-detector CT using test-bolus method for image acquisition timing and iso-osmolar contrast injection through upper extremity vein. The length of the column of contrast reflux into the inferior vena cava (IVC) was correlated to echocardiographically determine tricuspid regurgitation jet velocity (TRV). SVC area change with contrast injection at the level of the bifurcation of the pulmonary artery was also correlated with IVC sniff response by echocardiogram. RESULTS: The reflux column length was interpretable in 27 of 32 patients with a mean length of 10.1 ┬▒ 1.1 mm, and a significant bivariate correlation was observed between reflux column length and the tricuspid regurgitant jet velocity (r = 0.84; P \u3c .0001). Mean SVC distensibility ratio was 0.63 ┬▒ 0.03; mean IVC sniff response ratio was 0.53 ┬▒ 0.03. SVC distensibility correlated to IVC sniff response with a Pearson r of 0.57 (P = .04). CONCLUSION: Quantification of IVC and SVC contrast characteristics during CTCA provides a feasible and potentially accurate method of estimating right atrial and ventricular pressure

    Water Adaptive Limber Locomotive Effector (WALL-E)

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    There are many celestial bodies in the Solar System that have the potential for harboring life such as the moons Europa and Enceladus; these worlds hide away vast oceans under thick layers of ice. The potential for these bodies to contain other lifeforms has piqued the interest of organizations on Earth, such as the National Aeronautics and Space Administration (NASA), as destinations for future missions. Because of the distances and relatively harsh conditions involved, Remotely Operated Vehicles (ROVs) would be sent on the initial missions to explore these worlds. The NASA Jet Propulsion Laboratory (JPL) has developed a remotely-operated Mini-Arm for use on an ROV. This mini arm would be used to explore the oceans of these distant worlds. However, it is in need of an end effector capable of manipulating objects of interest; this was the task of the Boise State University Microgravity Team. During the course of the 2018-2019 school year, the team designed and fabricated WALL-E as a flexible and dexterous solution to subsurface gripping. The design, degrees of freedom, and simple user interface allow the operator to easily manipulate samples of varying dimensions and geometries, akin to those potentially found on the aforementioned ocean worlds