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

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

Source Reduction and Recycling Programs at a Joint Venture Automobile Assembly Plant

New United Motor Manufacturing, Inc. (NUMMI) is a vehicle assembly plant in Fremont, California. NUMMI began operations in 1984 as ajoint venture of General Motors Corporation and Toyota Motor Corporation. In 1995, NUMMI produced 94,280 Geo Prizms, 135,112 Toyota Corollas, and 123,257 Toyota Tacoma trucks. NUMMI conducts its manufacturing operations using the Toyota Production System (TPS). A key element of TPS is the elimination of waste. This includes wasted energy, space, labor, and production materials. Waste reduction, i.e., source reduction, is part of NUMMI\u27s corporate culture and every team member is encouraged to continuously seek out new waste reduction opportunities. NUMMI\u27s management believes that the team members who actually do the work are the people most effective in reducing waste. To motivate team members to aggressively seek out waste reduction opportunities, NUMMI has a very liberal and generous suggestion program. Each year millions of dollars are saved by adopting team member suggestions. Management\u27s responsibility is to work with the team members to develop and implement ideas for reducing waste. Management supports the team members with the technical and financial resources necessary to successfully implement a waste reduction project. Waste reduction projects are often classic examples of labor-management teamwork in problem solving, and process improvement. Last year NUMMI and California Polytechnic State University (Cal Poly), San Luis Obispo, conducted a joint waste reduction study. Graduate and upper division environmental engineering students came to NUMMI to evaluate certain waste producing operations for possible reductions. The students prepared detailed analyses of the operations and suggested ways to reduce waste. The project is now at the stage where NUMMI team members and management are reviewing the suggestions for implementation. This paper will discuss ongoing waste reduction and recycling activities at NUMMI and the preliminary results of the Cal Poly student project

Direct pore‐level observation of permeability increase in two‐phase flow by shaking

Increases in permeability of natural reservoirs and aquifers by passing seismic waves have been well documented. If the physical causes of this phenomenon can be understood, technological applications would be possible for controlling the flow in hydrologic systems or enhancing production from oil reservoirs. The explanation of the dynamically increased mobility of underground fluids must lie at the pore level. The natural fluids can be viewed as two-phase systems, composed of water as the wetting phase and of dispersed non-wetting globules of gas or organic fluids, flowing through tortuous constricted channels. Capillary forces prevent free motion of the suspended non-wetting droplets, which tend to become immobilized in capillary constrictions. The capillary entrapment significantly reduces macroscopic permeability. In a controlled experiment with a constricted capillary channel, we immobilize the suspended ganglia and test the model of capillary entrapment: it agrees precisely with the experiment. We then demonstrate by direct optical pore-level observation that the vibrations applied to the wall of the channel liberate the trapped ganglia if a predictable critical acceleration is reached. When the droplet begins to progressively advance, the permeability is restored. The mobilizing acceleration in the elastic wave, needed to “unplug” an immobile flow, is theoretically calculated within a factor of 1–5 of the experimental value. Overcoming the capillary entrapment in porous channels is hypothesized to be one of the principal pore-scale mechanisms by which natural permeabilities are enhanced by the passage of elastic waves