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- Creator:
- Nguyen, Antonino, Flores, Isidro, Rosas, Noe, and Xu, Tyler
- Description:
- There are many benefits of having a materials with low density and high surface area. The related research has attracted significant attention. To make porous nanofibers is one of the way to achieve low density and high surface area, and it is possible to keep its ability to conduct electricity. The current research focuses on controlling the amount of carbon network which was extended throughout the material by heat treatment. The heat treatment decompose the space holders. The remaining carbon nanofiber network that contained high content of carbon which allowed the nanofiber to have good electrical conductive property. The purpose of this study is to determine the electrical conductivity of porous polyacrylonitrile-derived carbon nanofibers when heat treated at various temperatures. To test the conductive property of the nanofibers, a electrochemical analyzer was used. The data from the different sintered specimens were compared and analyzed through graphical analysis. The results of the specimens sintered at temperatures from 21⁰C to 600⁰C displayed little difference in electrical conductivity, but the specimen treated at 650⁰C was a clear outlier with the highest electrical conductivity. The specimen sintered at 550⁰C also showed good conductivity. It was found that the increase in the heat treatment temperature enabled the nanofibers' electrical conductivity in an increasing way. The material was also electrically sensitive to light, and the addition of iron oxide had no significant influence on the electrical conductivity of the nanofibers. It is concluded that the more carbonization of the fiber network, the better the electrically conductive of the fibers. Further study on porous polyacrylonitrile nanofibers and their electrical conductivity property is encouraged by comparing different space holder polymers.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Wachuka, Sharon
- Description:
- Race/ethnicity was a central theme in the 2016 election. Many believe that Donald Trump's success resulted from backlash against Obama having been the first African American president. Some European Americans expressed feeling marginalized and ignored during the Obama administration. Therefore, the current study explores how race and ethnicity impacted attitudes toward Donald Trump. Through qualitative research, we found different ways that these events may have culturally, socially, and psychologically impacted college students. Focus groups were separated into ethnic groups. Previous research assessed the impact of Donald Trump's presidency, but do not focus on how these demographic characteristics influence voting behavior and support for various candidates or policies. The results will allow us to gain knowledge regarding how these attitudes interact with participants' demographic characteristics such as gender, age, race/ethnicity, and socioeconomic status. We found that African Americans spoke freely compared to other groups about their dislike for Donald Trump. Although there was widespread negative feelings towards Donald Trump, there was a lack of knowledge about his policies. Topics on abortions and gun control were mentioned across all groups, while topics on fear and anger, were only present in African American, and Latino groups. Non muslim Asian Americans mentioned having little effect due to the access to their home countries. European Americans mentioned the church, and Hillary Clinton more frequently than most groups. Many European Americans voted due to the influence of their parents. Disagreement within generational beliefs was brought up among European Americans, and all mentioned racist parents.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Borja, Felipe, Esa, Sania, Cady, Tristan, and Majumdar, Prokkawn
- Description:
- This presentation talks about a system for autonomous navigation and target recognition for indoor search and rescue missions using small unmanned aerial vehicles (UAVs). The use of lightweight multicopters makes them ideal for maneuvering through tight spaces and locating victims in shorter time. Simultaneous Localization and Mapping (SLAM) techniques and Collision Avoidance Systems (CAS) are used to navigate the vehicle in the GPS-denied environments. SLAM, CAS, and target recognition software can help rescuers locate victims for disaster relief. Using a LIDAR and camera, it is possible to create a map of an indoor environment and determining and keeping track of the UAV's in the constructed map. The victims can be identified using onboard image processing. An RPLidar is used in conjunction with HectorSLAM algorithm localization and mapping. A Mobius Actioncam is used for the victim identification. The identification software runs on an NVidia Jetson TX1 microcomputer. The Jetson TX1 communicates with the onboard Pixhawk flight controller, while also transmitting data to a ground station using Xbee radio modules. Neural networks are used for the identification of victims as well as for collision avoidance with the wall so that the UAVs navigate the indoor environment safely. Simulation and test results will be presented. Work is underway to test the overall system in flight for realistic search and rescue missions in the indoor environment.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Sanders, Uriah and Mkrtchyan, Karapet
- Description:
- Floriculture is a multibillion-dollar branch of agriculture that is integral to the economy in numerous countries. The cut flower industry experiences heavy losses in products due to organ shedding. Organ shedding is initiated due to a highly regulated process, which originates with the formation of a detachment or abscission zone. Abscission zone cells in floral organs secrete enzymes to digest the cell walls of adjacent cells. These molecules degrade the middle lamella, which joins adjacent cells. This ultimately leads to the loss of the organ. Delphinium sheds its floral organs just four days after being harvested, making it difficult to ship it to long distances and to sell it outside of localized markets. This project seeks to investigate abscission zone development in floral organs of delphinium flowers using a combination of histological, microscopy, and genomic techniques. Developmental studies will provide a better understanding of the critical points in abscission zone formation in Delphinium flowers, transcriptome analysis at various developmental points will be used to understand the genetic basis of abscission. Results from this data can serve as a foundation for producing Delphinium with delayed abscission activity and thus a longer shelf life after harvesting, without the use of ectopically applied chemicals which still have questionable environmental impacts.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Lopez, Laura and Duong, Vian
- Description:
- The preliminary study of water disinfection began in the mid and late 1800s due to the numerous health hazards due to chemical and microbial water contamination. Although there are many existing methods of water treatment, disinfection by-products (DBPs) have remained as one of many challenges and limitations to safe drinking water. DBPs have been one of the major concerns at the Laguna Vista Elementary School in Oxnard, California. Water samples from the school's water supply revealed an increase in total trihalomethanes (TTHMs), a DBP, which exceeded the regulated maximum contaminant level in 2015, posing health risks to the public. DBP formation results in the chemical reaction between chemical disinfectant agents with the natural organic matter in water. Due to ideal conditions in the formation of THMs, variations of water treatment procedures, such as chemical coagulation, ion exchange, and nanofiltration, in the removal of natural organic matter and bromide will result in decreased DBP formation. Other methodologies to reduce DBPs formation include ozone, adjusting water pH levels, chloramines, and ultraviolet irradiation. Results from these procedures are expected to be lower DBP concentration; however, considering methodology limitations, its effectiveness will vary on the apparatus of the water system, contaminants within the water, and disinfectant. Further research regarding DBP and will classify the proper techniques and technology to reduce TTHM formations.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Rickerl, Kaitlin and Reed, Jessica
- Description:
- Trazodone HCl (TZN) is a selective serotonin antagonist and reuptake inhibitor that is commonly used to treat human depression and anxiety. In a study performed in 2016, TZN was found to be effective in providing sedation and improving handling in laboratory rabbits (Oryctolagus cuniculus). Despite its efficacy the safety of repeated treatment of TZN in rabbits had not been established. To identify the systemic effects of repeated TZN administration in rabbits, New Zealand white laboratory rabbits (n = 12) were orally given 40 mg/kg TZN every 12 hours (±1 hour) for 28 days. A physical examination was performed by a veterinarian every 7 days. Blood was collected for cell counts and serum chemistry analysis prior to and every 14 days during the TZN treatment. Despite some fluctuations in serum liver and kidney values, preliminary results suggest all physical exam parameters and blood values remained within expected reference ranges for the entire 28-day TZN treatment.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Bamgbose, Olusegun, Naffaa, Omar, and Naffaa, Ibrahim
- Description:
- The Decentralized Wastewater Treatment System (DWTS) consists of a variety of water treatment techniques for homes, businesses and industrial facilities independent of power grids or water transport systems. The system can treat both greywater and brackish groundwater- available even in some regions experiencing drought- and therefore can be deployed for single household use, as well as serve disadvantaged communities and remote regions lacking clean water infrastructure. DWTS can do this by being self-sustaining, and mobile, making use of renewable energy sources, solar power in this case, and by being robust, efficient, fault tolerant, and easy to operate. To accomplish this, we propose an embedded control system for DWTS that makes use of embedded sensors and an embedded microcontroller for automation, with the design of the system split into three stages: Data Acquisition, Fault Tolerance, Efficiency Analytics.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
28. Design of a FAME-MLL High Temperature, High Pressure Compressor for a Two-Stage Refrigeration Cycle
- Creator:
- Rugh, Thomas and Steele, Trevor
- Description:
- The design and analysis for the high-temperature, high pressure compressor is part of a two-stage refrigeration cycle using Methyl Lineolate (MLL) working fluid. This refrigeration cycle is part of a Venus Lander outlined in Anderson et al. (2016) [1]. At a critical temperature of 799 K MLL fluid was selected since it was higher than the Venus environment of 738 K, so therefore latent heat transfer was used in the heat rejection. Due to the high working temperatures and pressures, the mechanical design and proper selection of materials is paramount. As shown in the Cordier diagram, [2] the high specific diameter and low specific speed of this compressor leaves only a few options including a piston type compressor and a screw compressor. To prevent significant thermal expansion or mechanical failure, Nickel-based superalloys are chosen as well as mechanical seals (gold, silver) to mitigate leakage. The 3D design will include SOLIDWORKS rendered mechanical design concepts. For the 100 W compressor, appropriate options will be considered in the presentation as well as fundamental thermodynamic and fluid analyses. [1] "Analysis of a Multi-Cascade Methyl Linoleate/SCO2/Transcritical CO2/R410-A Refrigeration Cycle for use in High Temperature, High Pressure Environments," by Kevin R. Anderson, Chris McNamara, and Ariel Gatti, proceedings of the ASME 2016 IMECE Intl. Mech. Engr. Congress & Expo., Nov. 11-17, Phoenix, AZ USA. [2] Fluid Mechanics and Thermodynamics of Turbomachinery," by S.L. Dixon, and C. Hall, Butterworth-Heinemann, 7th Ed., 2013.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Marquez, Carlos
- Description:
- A SIEM (Security Information and Event Management) is a tool used to aggregate, normalize, correlate, and present event log data and network flow traffic from endpoint machines, servers running critical business services, antivirus appliances, network infrastructure components, and more. Software-Defined Networking (SDN) allows the separation of the control plane and the data plane in network devices, giving control of network flow routing to a centralized controller. While a SIEM provides a high level of visibility, it can take more time than is optimal for the user to take appropriate action based on their findings. This project uses enterprise-class switches, IBM QRadar SIEM, and OpenDaylight Nitrogen to see how integration between SDN and SIEM could be used to improve network metrics being measured by the SIEM and allow for user-configured automated network-level responses to detected anomalies in the event logs or network flows. The implementation of such responses could, for example, reduce the need to spend crucial time relaying quarantine orders between appropriate teams for hosts that are known to be infected with malware. This could result in cutting off the spread of the malware upon detection. If automation is not an option, then this same integration could be used to allow one-click options for the same actions in the SIEM interface. The end result is the same - reduced response time to potentially critical threats.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona
- Creator:
- Sanchez, Jocelyn
- Description:
- Ingestible temperature capsules provide alimentary canal luminal temperature throughout their passage. This has the potential, depending on location, to more closely approximate core body temperature. The passage rate of these capsules may also reflect gastrointestinal (GI) motility or transit time. Major adaptive modifications have evolved in the alimentary canal design of non-human species. There has been limited use of these capsules in animals. The purpose of this study is to validate the use of VitalSense® Core Temperature Capsules (Equivital, Inc) in domesticated species. Animals were fitted with external wireless receivers that communicate wirelessly with the capsules every 15 sec. The capsules were then administered orally and monitored using a data acquisition system (LabChart®; ADInstruments, Inc.) until the temperature reading indicated a return to near ambient temperature (complete passage). Results were interpreted with published reference ranges on body temperature and GI transit time for each species. Temperature data as well as transit time was recorded and compared within and between animal species. Understanding the utility and limitations of this technology will help clarify applications for these temperature capsules in research and veterinary medicine.
- Resource Type:
- Student Research, Presentation, Poster, and Abstract
- Campus Tesim:
- Pomona