Now showing items 1-20 of 72182

    • Educación superior: ¿De masiva a universal... a obligatoria?

      Castiello-Gutiérrez, Santiago; Univ Arizona, Ctr Study Higher Educ (Universidad del Norte, 2019-07-12)
      Resumen: Aunque el costo de estudiar en una institución de educación superior pública en México es relativamente bajo, el acceso universal a la educación superior en este país aún está lejos de convertirse en una realidad. El gobierno federal, junto con las instituciones educativas públicas y privadas, ha implementado diferentes enfoques para aumentar la cobertura, sin embargo, la brecha continúa ampliándose entre los estratos más altos y bajos de la población con acceso a estudios terciarios. Recientemente, el gobierno federal impulsó una reforma constitucional que incluye la educación superior como un derecho, por lo tanto, la hace obligatoria. Este texto describe, de manera breve, el estado de la cobertura de la educación superior en México, así como las implicaciones de pasar a un sistema obligatorio. Abstract: Although Mexico has one of the less expensive costs of attendance, universal access to higher education is still far from becoming a reality. The federal government along with public and private educational institutions have implemented different approaches to increase access but the gap among higher and lower strata of the population reflected in HEIs seems to be widening. Recently, the federal government proposed to change the Constitution to include higher education as a right and compulsory. This essay presents an overview of access to higher education in México as well as the implications of moving to a compulsory system.
    • Indications and Clinical Results of Radial Head Replacement: Has Anything Changed?

      Eyberg, Blake A; McKee, Michael D; Univ Arizona, Coll Med Phoenix, Dept Orthopaed Surg (LIPPINCOTT WILLIAMS & WILKINS, 2019-12)
      Radial head fractures are common injuries comprising 1/3 of the fractures about the elbow. As a secondary valgus stabilizer of the elbow, radial head fractures can compromise elbow stability leading to long-term pain, dysfunction, and degenerative change. Furthermore, radial head fractures can be accompanied by associated injuries including ligamentous lesions that can further exacerbate elbow instability, leading to long-term sequelae. As fixation principles and technology have evolved, so has the ability to render surgical treatment for these fractures. In general, minimally displaced and some displaced fractures may be treated nonoperatively with early motion. Fractures with a block to rotation and displaced fragments with 3 or fewer fragments may be treated with open reduction and internal fixation. Comminuted fractures or those with greater than 3 fragments may be successfully treated with radial head replacement. Associated elbow instability will also influence treatment decisions.
    • ZBP-89 negatively regulates self-renewal of liver cancer stem cells via suppression of Notch1 signaling pathway

      Wang, Nuozhou; Li, Ming-Yue; Liu, Yi; Yu, Jianqing; Ren, Jianwei; Zheng, Zhiyuan; Wang, Shanshan; Yang, Shucai; Yang, Sheng-Li; Liu, Li-Ping; et al. (ELSEVIER IRELAND LTD, 2019-12-23)
      Liver cancer stem cells (LCSCs) initiate hepatocellular carcinoma (HCC) and contribute to its recurrence and treatment resistance. Studies have suggested ZBP-89 as a candidate tumor suppressor in HCC. We explored the role of ZBP-89 in the regulation of LCSCs. This study was performed in liver tissue samples from 104 HCC patients, 2 cell lines and mouse tumor models. We demonstrated that ZBP-89 was weakly expressed in LCSCs. Patients with high expression of LCSC markers displayed reduced survivals and higher recurrence rates after curative surgical operation. The expression of ZBP-89 was predictive for decreased recurrence. LCSC markers were negatively correlated with ZBP-89 in HCC tissues and in enriched liver tumor spheres. The exogenous expression of ZBP-89 attenuated the tumor-sphere formation and secondary colony formation capabilities of LCSCs in vitro and tumorigenicity in vivo. Furthermore, the negative effect of ZBP-89 on cancer sternness was Notch1-dependent. Localized with Notch1 intracellular domain (NICD1) in the nucleus, ZBP-89 repressed the Notch1 signaling pathway by competitive binding to NICD1 with MAML1. Collectively, ZBP-89 negatively regulates HCC sternness via inhibiting the Notch1 signaling.
    • Occupational Component Analysis in Agricultural Mechanization: A Research Project of the Department of Agricultural Education

      Cox, David E.; Zurbrick, Phillip R. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1980)
    • The Importance of Agricultural Production in Maricopa County, Arizona, Economy

      Stubblefield, Thomas M.; Robertson, Charles E. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1980-01)
    • Agricultural Employment in Selected Areas of Arizona

      Zurbrick, Phillip R. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1979)
    • Monitoring Insect Parasites in a Cotton Pest Management Program

      Mason, Charles E.; Werner, Floyd G. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1978)
    • Employment Trends in Agriculture for Selected Areas of Arizona: An Update

      Zurbrick, Phillip R. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1976)
    • Occupational Component Analysis in Ornamental Horticulture: A Research Project of the Department of Agricultural Education

      Zurbrick, Phillip R. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1974)
    • Snowmelt Runoff Efficiencies on Arizona Watersheds

      Solomon, Rhey M. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1975)
    • Dairying Costs in Central Arizona

      Wright, N. Gene (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1974)
    • Short Staple Cotton Breeding

      Fisher, W. D.; Stith, L. S. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1972-02)
    • An Economic Comparison of Short and Full Season Cotton Production in Arizona: Research Report

      Buxton, Dwayne Revere; Taylor, B. Brooks; Willett, Gayle S. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1973-08)
    • Report on Turfgrass Research 1970

      Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1971
    • Data for the Desert Citrus Industry

      Cable, C. Curtis; Fox, Roger W.; Gotsch, William P. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1970-10)
    • Short Staple Cotton Breeding

      Fisher, W. D.; Stith, L. S. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1970-11)
    • Evaluation of Biochemical Soil Additive Vineyard Study

      Halderman, Allan D.; Rauschkolb, Roy S.; True, Lowell F. (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1970-06)
    • Arizona Grain Sorghum, Forage Sorghum, and Sudangrass Performance Tests 1969

      Voigt, Robert Lee (Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1970-03)
    • Report on Turfgrass Research 1969

      Agricultural Experiment Station, University of Arizona (Tucson, AZ), 1970