Scale Model and Flow Visualization of Jack Rabbit II Chlorine Field Test

The release of hazardous gases, especially accidental releases, can have a major impact on the surrounding environment and population. The history of accidental hazardous gas releases is filled with plant destruction, civilian injury, and even death. Knowledge of how these gases travel and disperse once released can significantly lessen physical harm and improve emergency procedures. The Jack Rabbit II field test was conducted in pursuit of this knowledge for a chlorine release. In this field test, a purpose-built chlorine tank was surrounded by CONEX trailers assembled in the desert in Utah to model an urban setting. Multiple releases of chlorine in this setting were conducted, and the concentrations downwind were measured and analyzed. Because of the limitations of field tests, a wind tunnel model of this field test program would be beneficial. Such model testing would allow for more releases while changing many of the test variables. A wind tunnel model would have repeatable tests, allowing for ensemble averages to improve data. In pursuit of this goal, a 1:50 scale model of the field test was created. Once the model was complete, several preliminary tests were conducted to test the design of the experiment. Using fog to represent chlorine, videos of these preliminary tests were obtained and compared to the field test videos

Community Philanthropy: How the Delta Region Revives, Embraces, and Promotes the Spirit of Giving

· Community philanthropy is the giving of time, talent, and treasure that when invested locally is characteristic of positive change and lasting development. · This article reports on a survey of 31 small Arkansas communities of 5,000 to 15,000 in population using open-ended descriptive questions. Responses were compared across communities to assess variation in giving/fundraising, civic engagement, and leadership. · Data confirm that giving/fundraising was substantial, particularly in communities with populations of 8,000 or less. · Findings show that people are giving not only their money, but also their services, time, and skills – especially in times of emergency response. Giving was not restricted to the wealthy but included various levels of generosity. · The same leaders engage repeatedly, resulting in leadership fatigue. · Community philanthropy is a viable innovation and, by growing the public will and momentum for its use, it could turn communities into healthy, equitable places where vulnerable families can succeed

Lifecasting & Ubiquitous Relationships

My subjects do not know I exist. They do not know who I am, and they do not know their lives are the center of my painting series. But I know them - at least, I think I do. My acrylic paintings depict people in domestic spaces in specific moments in time. The relationships of person-to-person, person to space, paint to canvas and voyeur to subject drives my obsession to watch and to paint what I see. What I am seeing are a collection of pixels that make up human forms, living rooms, and kitchens. These digital bodies move through the spaces 24 hours a day 7 days a week. They are the subjects of a lifecasting/livecasting webcam and they are the subjects of my work

Reaching Back to Move Forward: Using Adverse Possession to Resolve Land Conflicts in Timor-Leste

Like many post-conflict countries, Timor-Leste grapples with land conflicts that resulted from successive waves of property dispossession. Colonized by the Portuguese, invaded and occupied by the Indonesians, and briefly administered by the United Nations, Timor-Leste’s history has produced disjointed patterns of land tenure. These land tenure systems have given rise to five separate categories of land claimants, each of whom often have conflicting interests in property. While the newly independent country has taken steps to resolve conflicting land claims through legislation, existing law does not address the longstanding tensions underlying these conflicts, making it difficult for the courts to reach durable solutions for property disputants. Applying the doctrine of adverse possession would help resolve these disputes. Relying on this doctrine would reduce strain on the judicial system by delineating a clear standard for determining which claimants have lawful rights to land. Furthermore, reliance on this doctrine would positively impact the economic and social stability of this developing country, helping to create an environment that fosters further economic growth. While the doctrine of adverse possession would not wholly eradicate land dispute issues in Timor-Leste, it has the potential to significantly improve the current situation

Preconception Health Care Practices Of Nurse Practitioners In The Primary Care Setting

The United States Public Health Service recommends that age appropriate preconception care be provided to all women of reproductive age. Preconception health care provides a woman the opportunity to assess her health status before pregnancy, make appropriate health promoting behavior changes and increase the potential for a healthy pregnancy outcome. Neural tube defects, fetal alcohol syndrome, congenital malformations and low birth weight are examples of adverse infant conditions that can be reduced through preconception health care interventions. Current research suggests that preconception health care according to United States Public Health Service recommendations is not practiced in the primary care setting. This researcher sought to elucidate the preconception health care interventions of nurse practitioners in the primary care setting. Nola Pender’s theory of health promotion provided the theoretical framework of this research. A descriptive survey was utilized to answer the research question. What are the preconception health care practices of nurse practitioners in the primary care setting? Data was obtained utilizing the researcher developed questionnaire. Women’s Health Care Survey. A convenience sample of nurse practitioners with certification in family, adult, women’s health and midwifery were surveyed. Descriptive statistics were used to analyze the data. The findings indicated that preconception care is not offered according to the guidelines set forth by the United States Public Health Service. The majority of nurse practitioners provided counseling about appropriate body weight, basics of a healthy diet, the importance of exercise and smoking cessation, however, interventions more directly related to a woman’s health during pregnancy were provided by less than half of the respondents. Less than one-third screened for drug abuse, discussed benefits of folic acid supplementation or counseled abstinence from alcohol usage. Determination of rubella immunity and education about health risks associated with emptying a cat litter box were rarely provided

Contribution towards understanding the categorisation of landforms.

Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies.Categorisation in the geographic domain, including landform categorisation, is more subject to influence by cultural, linguistic, environmental and individual factors, than other domains. The study presented in this dissertation investigates the influence of landscape variation on the landform categories used by non-experts. Video-elicitation methods were used in interviews with inhabitants of two distinct landscape types, in Portugal. One study site was mountainous and topographically varied, while the other consisted of more homogenous, gently undulating terrain. Interview responses indicated that participants used more landform terms in descriptions of familiar landscapes. Specific place recognition was another stimulant for an increase in landform categorisation detail. Additionally, the participant group from the more homogeneous landscape had a smaller landform vocabulary, and primarily used variations on a core set of landform terms to describe topographic eminences. The other group had a much larger and more varied vocabulary.(...

Pattern formation and hydrogen production in suspensions of swimming green algae

This thesis concerns two aspects of microorganism behaviour. Firstly, the phenomenon of bioconvection is explored, where suspensions of motile microorganisms that are denser than the fluid in which they swim spontaneously form concentrated aggregations of cells that drive fluid motion, forming intricate patterns. The cells considered herein orientate by gyrotaxis, a balance between a gravitational torque due to uneven starch deposits causing cells to be bottom heavy and a viscous torque due to fluid flow gradients, and phototaxis, biased movement towards or away from a light source. In Chapters 2 and 3, a stochastic continuum model for gyrotaxis is extended to include phototaxis using three physically diverse and novel methods. A linear stability analysis is performed for each model and the most unstable wavenumber for a range of parameter values is predicted. For two of the models, sufficiently strong illumination is found to stabilize all wavenumbers compared to the gyrotaxis only case. Phototaxis is also found to yield non-zero critical wavenumbers under such strong illumination. Two mechanisms that lead to oscillatory solutions are presented. Dramatically different results are found for the third model, where instabilities arise even in the absence of fluid flow. In Chapter 4, an experimental study of pattern formation by the photo-gyrotactic unicellular green alga species Chlamydomonas nivalis is presented. Fourier analysis is used to extract the wavelength of the initial dominant mode. Variations in red light illumination are found to have no significant effect on the initial pattern wavelength. However, fascinating trends for the effects of cell concentration and white light intensity on cells illuminated either from above or below are described. This work concludes with comparisons between theoretical predictions and experimental results, between which good agreement is found. Secondly, we investigate the intracellular pathways and processes that lead to hydrogen production upon implementation of a two-stage sulphur deprivation method in the green alga C. reinhardtii. In Chapter 5, a novel model of this system is constructed from a consideration of the main cellular processes. Model results for a range of initial conditions are found to be consistent with published experimental results. In Chapter 6, a parameter sensitivity of the model is performed and a study in which different sulphur input functions are used to optimize the yield of hydrogen gas over a set time is presented, with the aim of improving the commercial and economic viability of algal hydrogen production. One such continuous sulphur input function is found to significantly increase the yield of hydrogen gas compared to using the discontinuous two-stage cycling of Ghirardi et al. (2000)

Alien Registration- Eales, Charlotte (Newport, Penobscot County)

https://digitalmaine.com/alien_docs/7890/thumbnail.jp

The Rise and Fall of Elizabeth Holmes: Investigating Myths Within Media Coverage

When Elizabeth Holmes became the youngest female billionaire in 2014, news media framed her as the next Steve Jobs due to her similarities as a dropout, a passionate industry disruptor, and a visionary. When she was discovered as a fraud in 2018, coverage framed her as a feminine, seductive monster who duped everyone. I analyzed the media coverage in both years to uncover myths that guided these narratives and argue that these news frames contributed to the large interest in her rise and fall while also reinforcing harmful ways of thinking toward success and female leadership

Weak one-basedness

We study the notion of weak one-basedness introduced in recent work of Berenstein and Vassiliev. Our main results are that this notion characterises linearity in the setting of geometric þ-rank 1 structures and that lovely pairs of weakly one-based geometric þ-rank 1 struc- tures are weakly one-based with respect to þ-independence. We also study geometries arising from infinite dimensional vector spaces over division rings