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Search Results: 1 - 10 of 693 matches for " Janna Stephens "
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Black Community College Students and Opinions and Beliefs on Weight in the Community: A Focus Group Study  [PDF]
Janna Stephens, Antoinette Perkins
Health (Health) , 2019, DOI: 10.4236/health.2019.111007
Abstract: Objective: The purpose of this study was to better understand black community college students’ beliefs on obesity in their community. Methods: Participants were 18 - 21 years old and African American/Hispanic Black. Focus group sessions were conducted with a discussion guide. Thematic analysis was used to analyze results. Results: Five focus groups were conducted. Four major themes emerged: My Culture Matters, The Effects of Slavery are Still Present, Meet Me Where I Want to Be, Not Where Society Wants Me, and If They Have Been Fat, They Get Me. It is clear that weight programs need to be sensitive to cultural preferences. Conclusion: Our results present unique factors related to overweight/obesity in the Black community.
Characterisation of Raw Sewage and Performance Evaluation of Al-Diwaniyah Sewage Treatment Work, Iraq  [PDF]
Hussein Janna
World Journal of Engineering and Technology (WJET) , 2016, DOI: 10.4236/wjet.2016.42030
Abstract: These days, water and wastewater treatment are one of the most important issues regarding to the human health. Wastewaters are one of the most environmental pollutants and a wide range of adverse effects linked to the effect of untreated wastewaters or wastewaters that treat improperly. The aim of this present study was to evaluate performance of the wastewater treatment plant at Al-Diwaniyah City according to the national standards. Therefore, data of the most common parameters (PH, BOD5, COD, TSS, PO4, NO3, Cl, and Oil and Grease) were collected from the wastewater treatment plant. The study revealed that the wastewater treatment plant was receiving medium to strong influent with a BOD5/COD ratio of between (0.4 - 0.7). Regression analysis was achieved to approximate the influent of BOD5 and TSS. While the effluent quality was exceeded the Iraq standards for disposing treated wastewater to the water bodies with a fluctuation in the ratio of BOD5to COD as a consequence of the operational problems. Therefore, these results would be of help to planners and policy makers in the City to combat such this problem and to take the necessary actions to reduce the impact of these pollutants.
Effectiveness of Using Natural Materials as a Coagulant for Reduction of Water Turbidity in Water Treatment  [PDF]
Hussein Janna
World Journal of Engineering and Technology (WJET) , 2016, DOI: 10.4236/wjet.2016.44050
Abstract: Coagulation-Flocculation plays a significant role in drinking water treatment. Laboratory experiments were carried out in order to assess the effectiveness of using Conocarpus Leaves Solution (CLS) as a natural coagulant in conjunction with the synthetic chemical represented by Alum in the water purification. Biological test was carried out to confirm that these leaves are not toxic, followed by optimizing the dosage of alum and then Alum and CLS were applied to the turbid water whose turbidity level has two ranges, (20 - 35) NTU and (90 - 120) NTU, using the JAR Test. The parameters determined before and after coagulation were turbidity, pH and temperature. The experiments showed that the optimum dose of alum coagulant (individually) for high turbid water is about 18 mg/l with PH = 7 and 24 mg/l f with PH = 5 and 9. In addition, for the low turbidity water, the optimum dose of alum was lower than in the high turbid water. In terms of using Alum in conjunction with CLS, at high range of turbidity, the results show that at 33% ratio of leaves solution to alum coagulant, there are 50% and 75% turbidity reduction performed for the PH equal to 5 and 9 respectively. Although about 62% and 65% turbidity reduction were achieved at PH = 7 and PH = 9 in the low range level. However, low reduction in turbidity has occurred when the water PH = 5. The amount of leaves solution added to the water in the water treatment plant is highly important, hence it decreases the amount of using the synthetic chemicals by about 33% of the quantity that required for water treatment and that will help both, the water industry and the human health. More studies need to be achieved in particular different concentration of the Conocarpus leaves solution in order to improve the percentage of using the natural material as a coagulant.
Randomized Controlled Pilot Study Testing Use of Smartphone Technology for Obesity Treatment
Jerilyn K. Allen,Janna Stephens,Cheryl R. Dennison Himmelfarb,Kerry J. Stewart,Sara Hauck
Journal of Obesity , 2013, DOI: 10.1155/2013/151597
Abstract: Background. The established interventions for weight loss are resource intensive which can create barriers for full participation and ultimate translation. The major goal of this pilot study was to evaluate the feasibility, acceptability, and preliminary efficacy of theoretically based behavioral interventions delivered by smartphone technology. Methods. The study randomized 68 obese adults to receive one of four interventions for six months: (1) intensive counseling intervention, (2) intensive counseling plus smartphone intervention, (3) a less intensive counseling plus smartphone intervention, and (4) smartphone intervention only. The outcome measures of weight, BMI, waist circumference, and self-reported dietary intake and physical activity were assessed at baseline and six months. Results. The sample was 78% female and 49% African American, with an average age of 45 years, and average BMI of 34.3?kg/m2. There were trends for differences in weight loss among the four intervention groups. Participants in the intensive counseling plus self-monitoring smartphone group and less intensive counseling plus self-monitoring smartphone group tended to lose more weight than other groups (5.4?kg and 3.3?kg, resp.). Conclusions. The results of this pilot trial of a weight loss intervention provide preliminary support for using a smartphone application for self-monitoring as an adjunct to behavioral counseling. 1. Introduction More than one-third of US adults (35.7%) are obese [1] which greatly increases their risks for hypertension, hyperlipidemia, type 2 diabetes, heart disease, stroke, and some types of cancer. Even modest weight loss of 5%–10% of initial body weight can reduce the risk of these negative health consequences [2]. National guidelines target the reduction of total and abdominal obesity through increased physical activity and caloric restriction [3]. Although research has demonstrated the efficacy of these lifestyle changes on weight loss and improvement of cardiovascular risk factors, promotion and maintenance of such changes continues to be a challenge [4–6]. The established interventions are resource intensive and require frequent group and individual in-person counseling sessions which can create barriers for full participation and ultimate translation. Busy health professionals need effective tools and strategies to facilitate healthy eating and increase physical activity in their patients, especially those who are overweight or obese. Communication technologies such as smartphones offer a potentially powerful approach for addressing common
Some Notes on Modelling the Relationship between the Environment and Institutional Context  [PDF]
Davide Infante, Janna Smirnova
Modern Economy (ME) , 2011, DOI: 10.4236/me.2011.21003
Abstract: Being a real concern of any society, environmental quality has received much attention in economic litera-ture. However, the role that the institutional context plays in environmental issues is still an open question. Since the environment and institutional context are closely interrelated through government regulation, the investigation on the relationship between environment-institutions represents a fruitful terrain for economic research. Our aim is to design research notes to study this relationship using theoretical and empirical ap-proaches, by modelling the institutional context and estimating its impact on the environment. Our notes could also shed fresh light on the issue of environmental policies and their implementation in emerging and developing economies.
Pst Pst (1896-1898). Een erotisch weekblad tussen naturalisme en utopie
Janna Coomans
TS·> Tijdschrift voor Tijdschrift-studies , 2012,
Abstract: Amsterdam-based Pst Pst (1896-1898) was more than an erotic magazine. It not only tried to excite and provoke its audience with drawings of naked ladies and obscene jests, it also contained elements of two important literary trends: utopianism and naturalism. On the one hand, it was naturalistic in its attempt to uncover morals and sexual practices that were concealed in public discourse. The magazine ridiculed the double standard of Dutch society through jokes and prints about prostitution. On the other hand, it described the manifestations, mainly the nightlife, of the urban bohemian subculture to which it was - both geographically and mentally - connected. Pst Pst tried to dissociate itself from social conventions by creating a small world of its own. It announced mysterious erotic events, placed extravagant fake advertisements and depicted prostitutes as insatiable, merry young girls. Obviously, Pst Pst was not the only publication engaged in the production of erotica, but in this period it was the only erotic magazine, with corresponding characteristics such as a connection with a specific audience and an engagement with current affairs.
Lying in Wait to be Found: Reliquary Communities of Memories
Janna Swales
Nordlit : Tidsskrift i litteratur og kultur , 2008,
Abstract:
Lying in Wait to be Found: Reliquary Communities of Memories
Janna Swales
Nordlit : Tidsskrift i litteratur og kultur , 2008,
Abstract:
Energy Level Diagrams for Black Hole Orbits
Janna Levin
Physics , 2009, DOI: 10.1088/0264-9381/26/23/235010
Abstract: A spinning black hole with a much smaller black hole companion forms a fundamental gravitational system, like a colossal classical analog to an atom. In an appealing if imperfect analogy to atomic physics, this gravitational atom can be understood through a discrete spectrum of periodic orbits. Exploiting a correspondence between the set of periodic orbits and the set of rational numbers, we are able to construct periodic tables of orbits and energy level diagrams of the accessible states around black holes. We also present a closed form expression for the rational q, thereby quantifying zoom-whirl behavior in terms of spin, energy, and angular momentum. The black hole atom is not just a theoretical construct, but corresponds to extant astrophysical systems detectable by future gravitational wave observatories.
Gravity-Driven Acceleration of the Cosmic Expansion
Janna Levin
Physics , 1994, DOI: 10.1103/PhysRevD.51.462
Abstract: It is shown here that a dynamical Planck mass can drive the scale factor of the universe to accelerate. The negative pressure which drives the cosmic acceleration is identified with the unusual kinetic energy density of the Planck field. No potential nor cosmological constant is required. This suggests a purely gravity driven, kinetic inflation. Although the possibility is not ruled out, the burst of acceleration is often too weak to address the initial condition problems of cosmology. To illustrate the kinetic acceleration, three different cosmologies are presented. One such example, that of a bouncing universe, demonstrates the additional feature of being nonsingular. The acceleration is also considered in the conformally related Einstein frame in which the Planck mass is constant.
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