Impeller Repair Techniques For Centrifugal Compressors.

LecturePg. 91-106Successfully repairing centrifugal compressor impellers requires careful consideration and planning. The selection of techniques for inspection, material, and welding procedures are determined by numerous factors. Original design and manufacturing techniques, the nature of a failure, and environmental or process concerns all play a role. The relevant issues are addressed that may assist the user's maintenance personnel in formulating an overall strategy to extend the service life of their impellers through the selection of adequate repair procedures

Explorations, Vol. 4, No. 2

Articles include: Cover: Maya—painted clay figure from Jaina Island, Campeche, Mexico, 500-700A. D., approximately 100 percent. The clay figure is from a superb assemblage of pre-Hispanic materials from Mexico and Central America donated to the University of Maine’s Hudson Museum from the estate of William P Palmer III. In addition to this fine collection, Palmer donated an extensive array of objects from the Northwest Coast. Palmer earned his undergraduate degree in history and government from the University of Maine, and remained a strong, active supporter of the institution throughout his lifetime. More examples of objects from the Palmer Collection, including some pre-Columbian goldwork from Central America, may be found on page 10. Editorial Reflections, by Carole J. Bombard A Living Educational Experience: The Hudson Museum, by Richard G. Emerick Molly in the Museum Other Wonders, Other Ways From Classroom Walls to High Tech Museum Sharing Our Strengths: the development of youth conservation clubs in Pakistan, by James A. Sherburne Up Close and Personal Objects, Signs, and Symbols from Scafell to Chamonix: Visions of Mont Blanc, by Robert Brinkley Public Service in Special Places: Music Education as Empowerment, by Susan Grindel Cosset Lambs, Floods and Stars, by Roberta Chester Tuning the Immune System Fighting AIDS, Cancer and Other Diseases, by Anne P. Sherblom and Charles E. Moody Why do they do it? One Graduate Student Explains, by Diane Carroll Nutrition and Reproduction in Cows, by Barbara Barton and Diane Carroll Diane Carroll: former graduate student Research News Research New

Towards Sustainable Management of Dugong and Turtle Tourism: final report to the Commonwealth Department of the Environment and Heritage - Phase II

[Extract] To minimise negative anthropogenic impacts of tourism activities on dugong and marine turtles through tt-ialing codes of conduct for tourism related activities on dugong and marine turtles. Phase I of the project identified key issues relating to the protection of biological and cultural values associated with dugong and turtles, including the significance of the species in the context of Indigenous Australians' broader cultural and economic relationship with their sea country. Phase II involved the testing and evaluation in field trials of the dugong and turtle codes of conduct developed under Phase 1

Code of Practice for the Sustainable Management of Dugong and Marine Turtle Tourism in Australia

Some of the world's largest remaining populations of dugongs and marine turtles occur in Australia, and six of the world's seven species of marine turtle are found in these waters. Australian populations of dugongs and marine turtle species are under pressure from a wide range of human-related threats. All of these species are classified as threatened, either internationally, nationally or both. As such they are protected under Commonwealth, State and Northern Territory legislation. The opportunity to utilise these animals for commercial tourism comes with the responsibility to ensure that their use is not only sustainable in and of itself, but that such tourism also contributes actively to the conservation of the animals and the habitats on which they depend.\ud \ud The consultation and involvement of all stakeholder groups in the development and management of marine wildlife tourism is vital to ensuring its sustainability. For coastal Indigenous (Aboriginal and Torres Strait Islander) societies the sea and coast are part of their traditional estates, for which they have inherited cultural rights of ownership and responsibilities for their management. Best Practice management of dugong and marine turtle tourism must therefore include recognition of this fundamental relationship between Indigenous people and their sea country. Best Practice Guidelines are presented within this Code of Practice to assist managers, tour operators and Traditional Owners engage with each other in a process of equitable negotiation, to ensure sustainable outcomes from the planning and management of dugong and marine turtle tourism in Australia.\ud \ud This Code of Practice consists of three parts: \ud \ud 1. PART 1 addresses the broader issues for the sustainable management of dugong and turtle tourism, with specific recommendations for implementation by local councils, protected area and wildlife managers and tour operators, with implications for Traditional Owners, researchers, conservation NGO’s, local community members and other stakeholders. \ud \ud 2. PART 2 contains the Best Practice Guidelines for Engaging with Indigenous Traditional Owners in the Planning and Management of Dugong and Turtle Tourism. \ud \ud 3. PART 3 contains specific Codes of Conduct for tours operating in dugong and marine turtle habitat, and for specific types of interactions with these animals (i.e. aircraft, beach-based, vessel-based and in-water interactions). The provisions in these Codes of Conduct should be followed not just by dedicated dugong/turtle commercial tourism operators, but also by all users of beaches and coastal waters of northern Australia, wherever dugongs or marine turtles occur. \u

The current state of training in pain medicine fellowships: An Association of Pain Program Directors (APPD) survey of program directors

The Accreditation Council for Graduate Medical Education (ACGME) approved the first pain medicine fellowship programs over three decades ago, designed around a pharmacological philosophy. Following that, there has been a rise in the transition of pain medicine education toward a multidisciplinary interventional model based on a tremendous surge of contemporaneous literature in these areas. This trend has created variability in clinical experience and education amongst accredited pain medicine programs with minimal literature evaluating the differences and commonalities in education and experience of different pain medicine fellowships through Program Director (PD) experiences. This study aims to gather insight from pain medicine fellowship program directors across the country to assess clinical and interventional training, providing valuable perspectives on the future of pain medicine education. This study involved 56 PDs of ACGME-accredited pain fellowship programs in the United States. The recruitment process included three phases: advanced notification, invitation, and follow-up to maximize response rate. Participants completed a standard online questionnaire, covering various topics such as subcategory fields, online platforms for supplemental education, clinical experience, postgraduate practice success, and training adequacy. Surveys were completed by 39/56 (69%) standing members of the Association of Pain Program Directors (APPD). All PDs allowed fellows to participate in industry-related and professional society-related procedural workshops, with 59% encouraging these workshops. PDs emphasized the importance of integrity, professionalism, and diligence for long-term success. Fifty-four percent of PDs expressed the need for extension of fellowship training to avoid supplemental education by industry or pain/spine societies. This study highlights the challenge of providing adequate training in all Pain Medicine subtopics within a 12-month pain medicine fellowship. PDs suggest the need for additional training for fellows and discuss the importance of curriculum standardization

Assessing the Energy-Efficiency Gap

Energy-efficient technologies offer considerable promise for reducing the financial costs and environmental damages associated with energy use, but these technologies appear not to be adopted by consumers and businesses to the degree that would apparently be justified, even on a purely financial basis. We present two complementary frameworks for understanding this so-called "energy paradox" or "energy-efficiency gap." First, we build on the previous literature by dividing potential explanations for the energy-efficiency gap into three categories: market failures, behavioral anomalies, and model and measurement errors. Second, we posit that it is useful to think in terms of the fundamental elements of cost-minimizing energy-efficiency decisions. This provides a decomposition that organizes thinking around four questions. First, are product offerings and pricing economically efficient? Second, are energy operating costs inefficiently priced and/or understood? Third, are product choices cost-minimizing in present value terms? Fourth, do other costs inhibit more energy-efficient decisions? We review empirical evidence on these questions, with an emphasis on recent advances, and offer suggestions for future research