Autonomous Aircraft Rescue Firefighting Vehicle: Speedfest 2022 Charlie Div. Team 2

Aircraft fires are dangerous and can get out of control quickly. Due to the size of modern day aircraft, they can hold a large amount of fuel. This leads to a larger and hotter fire, one in fact that may be difficult for humans to approach. To decrease the risk of human life the implementation of autonomy to firefighting vehicles might be the solution.In this article, one will find the complete background, design and manufacturing processes, as well as future plans for this concept to become a reality. A team of eight engineering technology students have put together ideas, experience and effort to propose a hopeful execution for the Autonomous Aircraft Rescue Firefighting Vehicle. One will find throughout this paper that many types of data have been collected, analyses have been run, and investigative research conducted. Programming, wiring, welding, machining, and testing are among several things that have contributed to the progress of this project. Over the course of ten months, amongst complexities and successes, Team Fax is attempting to solve this real-world problem of dangerous aircraft fires. To demonstrate this concept at a scaled size, the team has competed in the Oklahoma State University 2022 Speedfest Competition. The competition required the AARFF vehicle to navigate a course of cones based on GPS locations as well as locating and extinguishing a type A jet fuel fire

ChAInGeS: The Chandra Arp Interacting Galaxies Survey

We have conducted a statistical analysis of the ultra-luminous X-ray point sources (ULXs; L(X) >= 10^39 erg/s) in a sample of galaxies selected from the Arp Atlas of Peculiar Galaxies. We find a possible enhancement of a factor of ~2-4 in the number of ULXs per blue luminosity for the strongly interacting subset. Such an enhancement would be expected if ULX production is related to star formation, as interacting galaxies tend to have enhanced star formation rates on average. For most of the Arp galaxies in our sample, the total number of ULXs compared to the far-infrared luminosity is consistent with values found earlier for spiral galaxies. This suggests that for these galaxies, ULXs trace recent star formation. However, for the most infrared-luminous galaxies, we find a deficiency of ULXs compared to the infrared luminosity. For these very infrared-luminous galaxies, AGNs may contribute to powering the far-infrared; alternatively, ULXs may be highly obscured in the X-ray in these galaxies and therefore not detected by these Chandra observations. We determined local UV/optical colors within the galaxies in the vicinity of the candidate ULXs using GALEX UV and SDSS optical images. In most cases, the distributions of colors are similar to the global colors of interacting galaxies. However, the u - g and r - i colors at the ULX locations tend to be bluer on average than these global colors, suggesting that ULXs are preferentially found in regions with young stellar populations. In the Arp sample there is a possible enhancement of a factor of ~2 - 5 in the fraction of galactic nuclei that are X-ray bright compared to more normal spirals.Comment: 28 pages, 7 figures, Astronomical Journal, in pres

Parsing the Undercontrol–Disinhibition Pathway to Substance Use Disorders: A Multilevel Developmental Problem

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/88062/1/j.1750-8606.2011.00172.x.pd

Amine functional hydrogels as selective substrates for corneal epithelialization

NoThe aim of this study was to develop a synthetic hydrogel to act as a corneal substitute capable of selectively supporting the adhesion and proliferation of limbal epithelial cells (LECs) while inhibiting growth of limbal fibroblasts. Deficiency of LECs causes conjunctival epithelial cells to move over the cornea, producing a thick scar pannus. Unilateral defects can be treated using LEC cultured from the unaffected eye, transplanting them to the affected cornea after scar tissue is removed. The underlying wound bed is often damaged, however, hence the need to develop a corneal inlay to aid in corneal re-epithelialization. Transparent epoxy-functional polymethacrylate networks were synthesized using a combination of glycerol monomethacrylate, ethylene glycol dimethacrylate, lauryl methacrylate and glycidyl methacrylate that produced two different bulk hydrogel compositions with different equilibrium water contents (EWCs): Base 1 and Base 2, EWC=55% and 35%, respectively. Two sets of amine-functional hydrogels were produced following reaction of the epoxide groups with excesses of either ammonia, 1,2-diamino ethane, 1,3-diamino propane, 1,4-diamino butane or 1,6-diamino hexane. Neither series of hydrogels supported the proliferation of limbal fibroblasts irrespective of amine functionalization but they both supported the adhesion and proliferation of limbal epithelial cells, particularly when functionalized with 1,4-diamino butane. With Base 1 hydrogels (less so with Base 2) a vigorous epithelial outgrowth was seen from small limbal explants and a confluent epithelial layer was achieved in vitro within 6days. The data support the development of hydrogels specific for epithelial formation