Material handling systems for the fluidized-bed combustion boiler at Rivesville, West Virginia

The 300,000 lbs/hr steam capacity multicell fluidized-bed boiler (MFB) utilizes complex material handling systems. The material handling systems can be divided into the following areas: (1) coal preparation; transfer and delivery, (2) limestone handling system, (3) fly-ash removal and (4) bed material handling system. Each of the above systems are described in detail and some of the potential problem areas are discussed. A major potential problem that exists is the coal drying system. The coal dryer is designed to use 600 F preheated combustion air as drying medium and the dryer effluent is designed to enter a hot electrostatic precipitator (730 F) after passage through a cyclone. Other problem areas to be discussed include the steam generator coal and limestone feed system which may have operating difficulties with wet coal and/or coal fines

Review of \u3ci\u3eThe Woman Who Loved Mankind: The Life of a Twentieth-Century Crow Elder\u3c/i\u3e By Lillian Bullshows Hogan, as told to Barbara Loeb and Mardell Hogan Plainfeather

The Woman Who Loved Mankind is a collection of the life stories of Lillian Bullshows Hogan, a Crow elder who lived from 1905 (perhaps as early as 1902) to 2003. After individual introductions by Barbara Loeb and Mardell Hogan Plainfeather, Hogan’s daughter, Hogan’s stories begin with “When I Was Born” and end with “I Feel Proud.” In between, she recounts how she was named, her memories as a young child, the stories of her elders, her experiences at boarding school, and the destructive effects of alcohol within her family. We hear about her husbands and children, while simultaneously learning about Crow traditions and the ways in which Hogan, throughout her life, wove together the ways of her elders and the ways of the non-Indian culture that surrounded her. She speaks of her grandchildren, the honors she has received (Lady Bird Johnson, for example, visited her home in 1964), and through these honors the names she was able to make and give to her grandchildren. As readers experience early reservation life, they learn about poverty, reservation politics, gender roles, women’s work, Crow families, Crow traditions, and relationships between Crows and non-Indians

Velocity Profiles and Skin Friction on a Ribletted Flat Plate in Adverse Pressure Gradient.

This project investigated the flow field characteristics over a flat, ribletted plate and the effects of an adverse pressure gradient on this flow field. Testing examined the development of the flow over the ribletted plate from laminar through fully turbulent flow fields. The flow field states (laminar, transitional, and turbulent) were determined using local turbulence intensity values and boundary layer profiles. Several parameters were examined to help better describe the flow characteristics, boundary layer profiles, and influence on skin friction drag. The skin friction drag coefficients were calculated using a numerical integration technique to determine an average value and scaled to the platform area of the plate to compare results with smooth plate values. Although the geometry and flow conditions produced a drag augmenting case, skin friction followed trends described by the other flow parameters; streamwise velocity, Reynolds stress, etc. At locations where the boundary layer developed in the riblet valley, the skin friction was higher. As the flow developed to transitional and fully turbulent, higher values were also experienced. For the zero pressure gradient and mild adverse pressure gradient, counter rotating vortices developed in the riblet valley. This more organized motion also had slightly reduced skin friction below the transitional flow field for the plate as well

The Africans Have Taken Arkansas : Political Activities of African-American Members of the Arkansas Legislature, 1868-73

African-American lawmakers in the Arkansas General Assembly during Radical Reconstruction became politically active at a time when the legislature was addressing the most basic issues of public life, such as creating the infrastructure of public education and transportation in the state. They were actively engaged in the work of the legislature. Between 1868 and 1873, they introduced bills that eventually became laws. Arkansas passed two civil rights laws at the behest of African-American lawmakers. Education, law and order, and economic development--issues that reflected the southern Republican agenda that dominated the state\u27s politics between 1868 and Democratic Redemption in 1874--also drew the interest of black lawmakers, and they proved not to be of a single mind when it came to this program. The black legislators of the three Republican-controlled assemblies enjoyed notable successes. Studying the political activities of the thirty-two African Americans sent to Little Rock during these years not only broadens our understanding of the careers of black officeholders at a crucial moment in southern, African-American and Arkansas history, it also allows us to hear their long-stifled voices

How about that extension? Biomechanical roles of spines in crustacean nauplii

Marine plankton possess elongated body structures, such as spines and horns, that increase drag on the body. While these extensions are often considered an anti-predation mechanism, the biomechanical implications of these structures are less studied. Using the barnacle nauplii Octolasmis spp., I explore the role of one such body extension, the dorsal thoracic spine, through amputation. Motion analysis revealed slower swimming and more erratic trajectories in dorsal thoracic spine amputees than those in control. Limb kinematic adjustments such as a larger beat amplitude, increased phase lag, and reduced contralateral symmetry were observed in amputees. While these changes may act to partially compensate for the loss of the spine by increasing propulsion and streamlining flow, they were unable to fully restore swimming proficiency. Further Particle Image Velocimetry (PIV) on live nauplii revealed increased predation risk by rheotactic predators as well as reduced feeding in amputees due to increased relative area of influence and decreased flux. A dynamically scaled model of spine loss supported area of influence results observed in live nauplii. The interaction between body extensions and limb motion shape swimming performance in nauplii, and in turn, shapes the evolution of naupliar form

Reflections on the Impact of Service-Learning/Experiential Education for the Field of Human Services

This article will address the importance of a holistic approach for human services by exploring the concept of community and utilizing service-learning/experiential education in human service courses. ACCESS (Achievement, Collaboration, Community, Education, Standards, and Services) will be covered by illustrating how service-learning/experiential education is a great pedagogy for collaborative partnerships between the university, community, students and faculty. Important elements of service learning/experiential education will be reviewed to provide a better understanding of the concepts. Reflections of the service experience will be included from students, community agency and faculty. Survey results will be utilized to demonstrate how service-learning/experiential education helps students achieve skills and a better understanding of course concepts while helping meet needed services in the community

The Sewing Circle Model for Community Collaboration: A Multicultural Approach

Introduction Excerpt:The Cocke County Collaborative (a division of Community House Cooperative, Inc.) of Newport and Cocke County in East Tennessee developed a new model for collaboration. The model has drawn a host of interested people and organizations from across the country both in following the progress of the working model and partnering for community based projects..

Reflections on the Impact of Service-Learning/Experiential Education for the Field of Human Services

The article addresses the importance of a holistic approach to human services by exploring the concept of community through utilizing service-learning/experiential education in human service courses. ACCESS (Achievement, Collaboration, Community, Education, Standards, and Services) illustrates that service learning/experiential education can offer a viable pedagogy for collaborative partnerships between the university, community, students, and faculty. The article reviews important elements of service-learning/experiential education to provide a thorough understanding of the concepts, including reflection on the service experience from students, community agencies, and faculty. Survey results demonstrate ways in which service learning/experiential education aids students in achieving skills and in acquiring a deeper understanding of course concepts while meeting needed services in the community