Track/train dynamics test procedure transfer function test

A transfer function vibration test was made on an 80 ton open hopper freight car in an effort to obtain validation data on the car's nonlinear elastic model. Test configuration, handling, test facilities, test operations, and data acquisition/reduction activities necessary to meet the conditions of test requirements are given

Calcinosis tumoral: a propósito de un caso

La calcinosis tumoral (CT) es una enfermedad pseudotumora l rara, de etiología desconocida, que afecta a tejidos blandos periarticulares. Se diagnostica en base a las imágene s radiográficas, TAC y RNM y su tratamiento es quirúrgico. En este trabajo se present a un caso de CT y se revisan los concepto s actuale s de ést a infrecuente enfermedad.Tumoral calcinosis is a rare psudotumoral diseas e of unknown etiology affectin periarticular soft tissues. The diagnosis may be advieced by radiographic, CTscan and MR images. Surgery is the elective treatment. A new case of tumoral calcinosis is here presented, reviewing the current concepts of this infrequent process

Generational advancement in sovereign nations: a qualitative study understanding the significance of knowledge infrastructure

Throughout history, socio-cultural and political movements have condemned indigenous peoples by advancing false rhetoric, half-truths, and equivocations championed as axiomatic principles. Foreign entities have massacred philosophies, traditions, and tribes while stealing ancestral lands that have yet to be recovered. This exploratory study examines the phenomenon of developing knowledge infrastructure within sovereign nations. A descriptive qualitative approach was used to answer the research question: To what extent, if at all, might knowledge infrastructure support generational advancement through learning and development programs within sovereign nations? Semi-structured interviews were conducted with 15 Tribal citizens, community members, and employees who currently or have worked in business enterprises within sovereign nations in the United States. This study details the significance of knowledge infrastructure and proposes recommendations based on collective voices within sovereign nations

Development of a Laboratory Based Sustainability Course for Environmental Engineers

An understanding of sustainability is important for all engineering students, but especially for Environmental Engineers who will be taking leadership roles on sustainability issues. This paper will discuss the development of a graduate and senior level course which provides the knowledge, computational, and experimental skills in sustainability for these future engineering leaders. The course includes both lecture and laboratory sections

Environmental Management of Wastes in the Semiconductor and Electronics Industries

The management of wastes in the semiconductor and electronics industries requires a multidisciplinary approach that considers the health and safety of employees as well as the treatment and recycling of waste materials. The manufacturing of semiconductor devices requires the use of many toxic chemicals and gases. Air emissions from manufacturing tools must be carefully monitored both inside and outside of the fabrication facility. Liquid effluents must be collected and pretreated before discharge to local wastewater systems. The subsequent use and eventual discard of electronic devices such as television sets and personal computers by consumers has created a new set of recycling and reuse problems. This paper will discuss approaches to the manufacturing and post-consumer disposal of electronic components and devices

Track/train dynamics test report transfer function test. Volume 1: Test

A description is presented of the transfer function test performed on an open hopper freight car loaded with 80 tons of coal. Test data and a post-test update of the requirements document and test procedure are presented. Included are a statement of the test objective, a description of the test configurations, test facilities, test methods, data acquisition/reduction operations, and a chronological test summary. An index to the data for the three test configurations (X, Y, and Z-axis tests) is presented along with test sequence, run number, test reference, and input parameters

Microcomputer Solid Waste Financial Model

Applications of a microcomputer based solid waste financial model will be described. The model is written as an overlay to the Lotus 1-2-3 spreadsheet program. It makes use of the Lotus 1-2-3 macro programming capabilities and is menu driven, requiring minimal computer skills for use. The model allows engineers to estimate costs for recycling centers, waste-to-energy plants, and landfills. Outputs include summary tables of operational and capital costs, as well as a 20 year proforma income statement. The model was developed for the California Waste Management Board, an agency of the State of California, and will be distributed by them

WASTE TRUCK FIRE RESEARCH AND TRAINING

Poster Presented at the Solid Waste Association of North America Western Region Symposium, Monterey, CA April 3 - 6, 202

Thermal Gasification of Densified Sewage Sludge and Solid Waste

The disposal of sewage sludge in an economic and environmentally acceptable manner is a problem common to all communities that have municipal wastewater treatment facilities. Similarly, all communities are faced with the disposal of increasing quantities of solid waste. The co-disposal of sludge and solid waste in a common facility is a potential solution to both of these problems. The results of an experimental program to verify the feasibility of the gasification process for the co-disposal of densified sludge and source separated solid waste are presented in this paper