Design, Manufacturing and Testing of an Environmentally-Green Bipropellant Thruster

This project reviews the design, manufacturing and experimentation process of a green bi-propellant thruster designed to output 5 lbf. The goals were to successfully design, manufacture and test a thruster, while discovering the complications that arise through out the complete design process of a green thruster. The thruster was successfully designed using ideal rocket equations and the design was successfully confirmed using CFD and FEA. Manufacturing of the thruster was fully planned and revealed mild flaws in thruster design. For example some features were not manufacturable to the exact measurements desired. Testing of the engine gave results inconsistent with expected values with a maximum nominal thrust of 2.38 lbf. Measurement errors in thrust and mass flow rates caused calculations of thruster performance, such as ISP, to vary from expected values. Measurement errors are suspected to stem from a combination of incorrect ideal assumptions and test bed design flaws

Social and economic monitoring of the Tongass National Forest and southeast Alaska communities : appendices A, B, C, and I

13 pagesThis work was funded through a Cooperative Agreement with the State of Alaska Division of Forestry as part of the Tongass Young Growth Challenge Cost Share Agreement with the USDA Forest Service

New Patient Telephonic Visits

PMG Oregon currently schedules approximately 60,000 New Patient visits each year. New patients are often seen at their first visit, with very little, and/or, without most up-to-date medical information transferred to their new clinical care team. The delay or lack of information results in challenges to our clinic teams to provide the best care for our new patients. It also results in providers/care teams spending additional time entering clinical data either during the new patient appointment, after the appointment, and often additional appointments are needed to address patient problems that could be completed in the initial visit

THERMAL ANALYSIS OF A MONOPROPELLANT MICROPROPULSION SYSTEM FOR A CUBESAT

Propulsive capabilities on a CubeSat are the next step in advancement in the Aerospace Industry. This is no longer a quest that is being sought by just university programs, but a challenge that is being taken on by all of the industry due to the low-cost missions that can be accomplished. At this time, all of the proposed micro-thruster systems still require some form of development or testing before being flight-ready. Stellar Exploration, Inc. is developing a monopropellant micropropulsion system designed specifically for CubeSat application. The addition of a thruster to a CubeSat would expand the possibilities of what CubeSat missions are capable of achieving. The development of these miniature systems comes with many challenges. One of the largest challenges that a hot thruster faces is the ability to complete burns for the specified mission without transferring excessive heat into the propulsion tank. Due to the close proximity of the thruster to the tank, thermal standoff options are necessary to help alleviate the heat going through the system, especially while in a thermally extreme environment. This thesis examines the heat transfer that occurs within a CubeSat with an operating hydrazine monopropellant thruster. Thermal analysis of the system revealed that having a solid stainless steel barrier between the thruster and tank led to increasing temperatures greater than 400K in the propellant tank while in an environment exposed to the sun. This creates a large amount of risk for the CubeSat and its mission. The use of a thermal insulating material or a hollow barrier for the standoff decreased the risk of using this system. This creates a standoff where the heat of the propellant reaction does not reach the propellant in the tank. Therefore, the maximum temperature that the tank reaches is equivalent to the temperature of the external environment while in extreme conditions. These results create the confidence that the thermal standoffs will function as intended to protect the spacecraft and its payload during flight

Quick guide : social and economic monitoring of the Tongass National Forest and southeast Alaska communities

4 pagesThe purpose of this Quick Guide is to present the social and economic monitoring guide for the Tongass National Forest and Southeast Alaska Communities, developed by the Ecosystem Workforce Program, in consultation with stakeholders. This monitoring plan contains four main questions for which we analyzed baseline conditions in the companion report to this guide: Social and Economic Monitoring of the Tongass National Forest and Southeast Alaska Communities: A Monitoring Plan and Baseline Report.This work was funded through a Cooperative Agreement with the state of Alaska Division of Forestry as part of the Tongass Young Growth Challenge Cost Share Agreement with the USDA Forest Service

Social and economic monitoring of the Tongass National Forest and southeast Alaska communities

52 pagesIn 2016, the Tongass National Forest (NF) amended its Land and Resource Management Plan to transition timber harvest on the forest from old growth to predominantly young growth over the next 10 to 15 years. Following this decision, the US Department of Agriculture established the Tongass Advisory Committee (TAC) to advise Forest Service leadership on the Tongass NF’s transition. One TAC recommendation was the development of a plan to track social and economic conditions in Southeast Alaska before, during, and after the transition to young growth. The purpose of this report is to provide the recommended social and economic reporting for the Tongass NF and Southeast Alaska communities, and provide a monitoring plan to be replicated in future years.This work was funded through a Cooperative Agreement with the State of Alaska Division of Forestry as part of the Tongass Young Growth Challenge Cost Share Agreement with the USDA Forest Service

Transcriptional program of ciliated epithelial cells reveals new cilium and centrosome components and links to human disease.

Defects in the centrosome and cilium are associated with a set of human diseases having diverse phenotypes. To further characterize the components that define the function of these organelles we determined the transcriptional profile of multiciliated tracheal epithelial cells. Cultures of mouse tracheal epithelial cells undergoing differentiation in vitro were derived from mice expressing GFP from the ciliated-cell specific FOXJ1 promoter (FOXJ1:GFP). The transcriptional profile of ciliating GFP+ cells from these cultures was defined at an early and a late time point during differentiation and was refined by subtraction of the profile of the non-ciliated GFP- cells. We identified 649 genes upregulated early, when most cells were forming basal bodies, and 73 genes genes upregulated late, when most cells were fully ciliated. Most, but not all, of known centrosome proteins are transcriptionally upregulated early, particularly Plk4, a master regulator of centriole formation. We found that three genes associated with human disease states, Mdm1, Mlf1, and Dyx1c1, are upregulated during ciliogenesis and localize to centrioles and cilia. This transcriptome for mammalian multiciliated epithelial cells identifies new candidate centrosome and cilia proteins, highlights similarities between components of motile and primary cilia, and identifies new links between cilia proteins and human disease