Effects of mutation and some environmental factors on the physiology and pathogenicity of selected bacteria

Studies with mutants of Staphylococcus aureus lacking some virulence factors suggest that the presence of deoxyribonuclease correlates with mouse pathogenicity of S. aureus, while the ability to ferment mannitol or the possession of coagulases are not required for virulence. Autotrophy investigations on mycobacteria demonstrate a complete correlation between the ability to grow with hydrogen and the species of scotochromogenic mycobacterium tested. All tested strains of M. gordonae, a saprophyte, could grow autotrophically while none of the tested strains of M. scrofulaceum, a clinically important species, possessed this ability. A series of heat tolerant mutants of Pseudomonas fluorescences were obtained which can grow at temperatures up to 54 C, in contrast to a maximum growth temperature of 37 C for the wild type

Multi-Satellite Attitude Prediction program/Orbiting Solar Observatory-8 (MSAP/OSO-8) operating guide

The sun's lower corona and chromosphere and their interaction in the X-ray and ultraviolet (UV) spectral regions were investigated to better understand the transport of energy from the photosphere to the corona. The interaction between the solar electromagnetic and particle radiation and the earth's environment was studied and the background component of cosmic X-rays was discussed

Two Cases of Co-Infection with Babesiosis and Lyme Disease

Case 1 The patient is a 71-year-old female with past medical history significant for hypothyroidism and hyperlipidemia who presented to Thomas Jefferson University Hospital (TJUH) with complaints of myalgias for 6 weeks duration. The patient stated that she had begun an exercise program to lose weight and had subsequently noticed body aches and increased fatigue. She had presented to an outside hospital with these complaints, was told that the etiology was musculoskeletal, and was prescribed naproxen for pain relief. The pain did improve slightly with the naproxen but she noticed a rash and hives after starting the medication and stopped taking it. Her symptoms continued for about 6 weeks and she decided to come to our emergency department when she was unable to obtain an appointment with her primary care physician. She also noted that 2 days prior to admission she had an increase in her temperature to 100˚ F. She had been feeling fevers since this time coupled with chills and sweating. The fevers were not cyclic in nature

Agent Based Modeling of Air Carrier Behavior for Evaluation of Technology Equipage and Adoption

As part of ongoing research, the National Aeronautics and Space Administration (NASA) and LMI developed a research framework to assist policymakers in identifying impacts on the U.S. air transportation system (ATS) of potential policies and technology related to the implementation of the Next Generation Air Transportation System (NextGen). This framework, called the Air Transportation System Evolutionary Simulation (ATS-EVOS), integrates multiple models into a single process flow to best simulate responses by U.S. commercial airlines and other ATS stakeholders to NextGen-related policies, and in turn, how those responses impact the ATS. Development of this framework required NASA and LMI to create an agent-based model of airline and passenger behavior. This Airline Evolutionary Simulation (AIRLINE-EVOS) models airline decisions about tactical airfare and schedule adjustments, and strategic decisions related to fleet assignments, market prices, and equipage. AIRLINE-EVOS models its own heterogeneous population of passenger agents that interact with airlines; this interaction allows the model to simulate the cycle of action-reaction as airlines compete with each other and engage passengers. We validated a baseline configuration of AIRLINE-EVOS against Airline Origin and Destination Survey (DB1B) data and subject matter expert opinion, and we verified the ATS-EVOS framework and agent behavior logic through scenario-based experiments. These experiments demonstrated AIRLINE-EVOS's capabilities in responding to an input price shock in fuel prices, and to equipage challenges in a series of analyses based on potential incentive policies for best equipped best served, optimal-wind routing, and traffic management initiative exemption concepts.

Charger 1: A New Facility for Z-Pinch Research

Charger 1 is a multipurpose pulsed power laboratory located on Redstone Arsenal, with a focus on fusion propulsion relevant experiments involving testing z-pinch diodes, pulsed magnetic nozzle and other related physics experiments. UAH and its team of pulsed power researchers are investigating ways to increase and optimize fusion production from Charger 1. Currently the team has reached high-power testing. Due to the unique safety issues related to high power operations the UAH/MSFC team has slowed repair efforts to develop safety and operations protocols. The facility is expected to be operational by the time DZP 2017 convenes. Charger 1 began life as the Decade Module 2, an experimental prototype built to prove the Decade Quad pinch configuration. The system was donated to UAH by the Defense Threat Reduction Agency (DRTA) in 2012. For the past 5 years a UAH/MSFC/Boeing team has worked to refurbish, assemble and test the system. With completion of high power testing in summer 2017 Charger 1 will become operational for experimentation. Charger 1 utilizes a Marx Bank of 72 100-kV capacitors that are charged in parallel and discharged in series. The Marx output is compressed to a pulse width of approximately 200 ns via a pulse forming network of 32 coaxial stainless steel tubes using water as a dielectric. After pulse compression a set of SF6 switches are triggered, allowing the wave front to propagate through the output line to the load. Charger 1 is capable of storing 572-kJ of energy and time compressing discharge to less than 250 ns discharge time producing a discharge of about 1 TW of discharge with 1 MV and 1 MA peak voltage and current, respectively. This capability will be used to study energy yield scaling and physics from solid density target as applied to advanced propulsion research

La Comunidad de Lawrence

During the semester, the class is learning about communities, the meaning and boundaries of communities and what makes a community. For my project, I am going to study the community and city of Lawrence, Massachusetts. Throughout the semester, I will be attending at least 3 different events in Lawrence. This will allow me to learn about the important aspects of the Lawrence community, such as the children, food and home life. The event reports will be the basis of the presentation and the presentation will also include information about the community as a whole

The Gender Wage Gap and the Motherhood Effect

This paper discusses the gender pay gap and how motherhood is a major factor toward the inequalities in the workplace. For this paper, the wage gap is defined as the difference between men and women’s yearly income consisting of hourly or salary wages, overtime, benefits and bonuses. It should be noted that men earn more in every category of work, even the categories that are female-dominated professions

Building Technology Breaks into Classroom Instruction to Reduce Media Multitasking and Increase Learning

The current study was designed to investigate the impact of media multitasking on learning outcomes in the classroom. The goal was to develop an instructional intervention that reduces the negative effects of media multitasking on learning outcomes by incorporating technology breaks into the instructional design. High school students in an all-girls school took part in three learning sessions, each with a different instructional strategy related to media multitasking in the classroom: Condition 1: Instruction as Usual; Condition 2: No access to technology; Condition 3: Technology Breaks. Students completed a pre and post-test knowledge-based assessment to measure their retention of the content taught. They also answered questionnaires related to their apprehension and distraction during each lesson. The results of a two-way repeated measure ANOVA suggest that while students experienced learning in all three conditions, the tech break condition resulted in the greatest increase in knowledge acquisition, and the instructional as usual condition resulted in the smallest increase in learning. Students also reported the highest levels of apprehension and distraction in the learning as usual condition and the lowest levels of apprehension and distraction in the no access condition. These results suggest that either restricting access to technology completely or providing tech breaks during instructional periods are more effective strategies for student learning and result in lower levels of distraction and apprehension. If future studies replicate these findings, schools should consider creating school policies regarding technology that build tech breaks into the curriculum to maximize student learning outcomes

Exploring Shakespearean Influence On Executive Leadership In Finance: A Qualitative Narrative Inquiry

This qualitative narrative inquiry sought to investigate perceptions of executive leaders in finance about how Shakespeare can influence leadership performance. It employed a conceptual framework in dramaturgical analyses (Goffman, 1959) and a theoretical framework in reflective leadership (Schon, 1983). Separate semi-structured interviews were conducted with five participants to gather data, which was coded in vivo. Codes were then analyzed and sorted into themes. The study was driven by two major research questions and a sub-question: The two major research questions and sub-question guiding this study were as follows: (1) What are perceptions of executive leaders in the financial industry about portrayals of leadership in Shakespearean drama and literature?; (2) How does a sample of executive financial leaders describe how Shakespearean drama and literature inform their leadership performance?; and (2.a.) How can the reflective analytical processes developed by leaders be described in context of Shakespearean leadership narrative? The analyses of the data collected in this study revealed two major themes with five (total) sub-themes. The first theme was: Clear Perceptions of Leadership with sub-themes of (1) “Brush Up” Your Shakespeare and (2) On Hamlet. The second major theme was: The Power to Inform Personal Practice, with the sub-themes of (1) “Suck Up All the Arts You Can,” (2) Shakespeare, the Cynic: “What Not to Do,” and (3) Grave Consequences. The study painted a picture of the rigorous emotional landscape of working as an executive in finance and highlighted this sample’s proclivity toward an environment in finance that is conducive to good teamwork