Automobile inspection, maintenance and repair conference. Proceedings.

National Highway Traffic Safety Administration, Washington, D.C.

Inspection, maintenance and repair of motor vehicles.

Mode of access: Internet.

Assessment of the automotive inspection, maintenance, and repair industry. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Airframe maintenance and repair /

"Supersedes AFM 52-11, 4 January 1960."

Junior aviation maintenance and repair.

Mode of access: Internet.

Maintenance and repair of surface[d] areas.

"March 1977."

Facilities engineering : maintenance and repair of roofs.

"Supersedes TM 5-617, 2 June 1945, NAVDOCKS MO-113, September 1963, and AFM 85-4, part D, October 1957"--P. iii.

Facilities engineering, maintenance and repair of architectural and structural elements of buildings and structures.

Includes index.

Unit, intermediate direct support and intermediate general support maintenance manual (including supplemental operating, maintenance and repair parts instructions) for crane, wheel-mounted, self-propelled for aircraft maintenance and positioning (SCAMP), 4 ton, Grove Manufacturing Company model RT41AA, NSN 3810-01-144-4885.

"29 January 1987."

Organizational, direct support, and general support maintenance manual (including supplemental operating, maintenance, and repair parts instructions) for 40 ton crane, crawler mounted, Harnishcfeger [i.e. Harnischfeger] Corporation model 5060, NSN 3810-01-145-8288.

"13 August 1984."

Organizational, direct support, and general support maintenance : care, maintenance, and repair of pneumatic tires and inner tubes.

Includes index.

Maintenance and repair parts consumption planning guide for contingency operations : helicopter, cargo transport: CH-54B /

Jan. 18, 1979.

Tractor principles; the action, mechanism, handling, care, maintenance and repair of the gas engine tractor,

Mode of access: Internet.

Flood control project maintenance and repair; Inspection report.

Mode of access: Internet.

Molecular Mechanisms of Airway Epithelial Progenitor Cell Maintenance and Repair.

The lungs are vital organs whose airways are lined with a continuous layer of epithelial cells. Epithelial cells in the distal most part of the lung, the alveolar space, are specialized to facilitate gas exchange. Proximal to the alveoli is the airway epithelium, which provides an essential barrier and is the first line of defense against inhaled toxicants, pollutants, and pathogens. Although the postnatal lung is a quiescent organ, it has an inherent ability to regenerate in response to injury. Proper balance between maintaining quiescence and undergoing repair is crucial, with imbalances in these processes leading to fibrosis or tumor development. Stem and progenitor cells are central to maintaining balance, given that they proliferate and renew both themselves and the various differentiated cells of the lung. However, the precise mechanisms regulating quiescence and repair in the lungs are largely unknown. In this dissertation, ionizing radiation is used as a physiologically relevant injury model to better understand the repair process of the airway epithelium. We use in vitro and in vivo mouse models to study the response of a secretory progenitor, the club cell, to various doses and qualities of ionizing radiation. Exposure to radiation found in space environments and in some types of radiotherapy caused clonal expansion of club cells specifically in the most distal branches of the airway epithelium, indicating that the progenitors residing in the terminal bronchioles are radiosensitive. This clonal expansion is due to an increase in p53-dependent apoptosis, senescence, and mitotic defects. Through the course of this work, we discovered that p53 is not only involved in radiation response, but is also a novel regulator of airway epithelial homeostasis. p53 acts in a gene dose-dependent manner to regulate the composition of airway epithelium by maintaining quiescence and regulating differentiation of club progenitor cells in the steady-state lung. The work presented in this dissertation represents an advance in our understanding of the molecular mechanisms underlying maintenance of airway epithelial progenitor cells as well as their repair following ionizing radiation exposure.