Development of Single Chamber Solid Oxide Fuel Cells with Porous Samaria Doped Ceria Electrolytes

Single chamber solid oxide fuel cells generate electricity using hydrogen and hydrocarbon fuel mixed with oxygen at intermediate temperatures (400-800°C) without using seals to separate the gases. A single-chamber solid oxide fuel cell was fabricated with a porous samaria doped ceria (SOC) electrolyte, nickel oxide anode, and a lanthanum strontium cobalt iron oxide (LSCF) cathode. Instead of separately sintering the different components at different temperatures, the electrolyte and electrodes were co-sintered at 1100°C. The porous SOC electrolyte approached 84% theoretical density when sintered at 1100° C. The fuel cell had a maximum open circuit voltage of .65 V at 550°C. The conductivity of the porous SOC electrolyte was greater than dense yttria-stabilized zirconia (YSZ) electrolytes but less than that of dense SOC electrolytes. Further studies will be conducted to determine the durability and to refine the heating schedule for simultaneous sintering of these fuel cells

A revised catalogue of the birds of Kansas. With descriptive notes of the nests and eggs of the birds known to breed in the state.

Mode of access: Internet

The effect of transitioning from a rearfoot strike to a non-rearfoot strike on running impulses per step

Over 19 million people consistently run as a form of exercise in the United States alone. Annually, approximately 50% of these runners will experience an injury detrimental to performance. A recent approach to mitigating running injuries is modification of a runner’s foot strike pattern (FSP). Transitioning runners from a rearfoot strike (RFS) to a non-rearfoot strike (NRFS) pattern has been shown to influence several factors related to running injuries, to include a reduction in average vertical loading rate (AVLR). This idea is well established, but there are likely other factors influencing running related injuries, such as running cadence and different impulses during each stance phase. The purpose of this study was to analyze the effect of a transitional NRFS running program on the magnitude of impulse per step. We hypothesized that impulse per step will decrease in the vertical, anterior, and posterior directions following the running program due to increased cadence. We hypothesized that medial and lateral impulses will remain unchanged after the treatment protocol

Comparison of On-Shoe Wireless Sensor to Instrumented Treadmill and Outdoor Environment – A Pilot Study

This study compared the MilestonePod (MSP) wireless running sensor to a fully instrumented treadmill (FIT) in measuring average vertical loading rate (AVLR), ground contact time (GCT), cadence, and stride length. MSP data from treadmill was also compared to MSP data during outdoor overground running. The MSP accurately measured GCT, cadence, and stride length during treadmill running compared to the FIT but failed to provide accurate AVLR data

A longitudinal study of naloxone opioid overdose awareness and reversal training for first-year medical students: specific elements require reinforcement.

BACKGROUND: The opioid epidemic is a progressively worsening public health crisis that continues to impact healthcare system strategies such as overdose reversal and destigmatization. Even among healthcare professionals, there remains a lack of confidence in naloxone administration and a prevalence of stigma. While training can play a major impact in reducing these shortcomings, the long-term effectiveness has yet to be characterized in training healthcare professionals. This study examined the long-term retention of opioid overdose awareness and reversal training (OOART) by evaluating performance at two-time intervals, immediately post-training and at a 3-month follow-up. METHODS: Voluntary training was offered to first-year (M1) medical students at the Drexel University College of Medicine in 2021. At this training, 118 students completed training, 95 completed the post-training survey, and 42 completed the 3-month follow-up. RESULTS: Opioid reversal knowledge questions assessed significantly increased scores post-training and at the 3-month follow-up. In three of the attitude questions, scores were improved at both follow-up timepoints. In addition, three attitude questions indicating a participant's confidence to respond to an opioid overdose situation increased directly after the training, but regressed at the 3-month follow-up. The remaining questions did not show any statistical difference across the survey intervals. CONCLUSIONS: This study establishes that while OOART provides participants with the knowledge of how to respond to an opioid overdose, the retention of this knowledge at a 3-month interval is reduced. The results were mixed for longitudinal assessment of participant's attitudes toward people with opioid use disorder. Some positive increases in attitudes were retained at the 3-month interval, while others trended back toward pre-training levels. These results support the effectiveness of the training but also provide evidence that OOART must be reinforced often