Clinical and radiographic observation of the periodontium in patients undergoing orthodontic therapy: first twenty-seven months

Thesis (MSD) --Boston University (Periodontics).Includes bibliographic references: leaves 84-89.Twenty-two male patients from 12-14 years of age were selected prior to active orthodontic therapy at Boston University School of Graduate Dentistry's Departmant of Orthodontics. These patients were projected to undergo full-banded orthodontic treatnent. The objective of this investigation was designed as a long tenn project to document the quantitative and qualitative changes occurring in the periodontium during and following orthodontic therapy. The patients were examined for the first 9 month period by Dr. Stuart Sears and Dr. Sergio Tejedor-Leon. Relocation of two families reduced the number of patients to twenty which were examined for the second 9 nonth period by Dr. Robert E. Roe and Dr. Robert P. Rubins. [TRUNCATED

Method for estimating the electrical conductivity of the lunar interior

Estimation method for electrical conductivity of lunar interio

Interaction of the solar wind with a planetary ionosphere

An electrodynamic model for an ionosphere-solar wind interaction is developed based on the existence of a low beta plasma below the anemopause. The currents for the interaction are driven by the solar wind motional electric field and induce a stagnation magnetic field at the anemopause. For Venus and Mars the lower region of the ionosphere near the electron density peak has the highest conductivity, and therefore the tangential component of the induction current flows substantially in this region. The current paths close in the anemopause, which is a solar wind current sheath analogous to the magnetopause. Both the fraction of the undisturbed solar wind motional electric field, which drives the induction current, and the required fraction of incident solar wind particles, crossing the anemopause to produce this current, are shown to be small

Lunar response to the time-varying interplanetary magnetic field and application to the ALSEP magnetometer experiment

Mathematical model for predicting lunar response to time varying interplanetary magnetic fields and its applicability to interpretation of ALSEP magnetometer dat

Sampling and handling of desert soils

Sampling and handling of desert soils - area site, transportation, processing, and storag

Seismicity investigations in the Cascade Mountains and vicinity, Oregon, 1 May 1969 - 30 April 1970

Seismicity in Cascade Mountains and vicinity, Orego

THE CRANE LAKE CONNECTION

The purpose of this report is two-fold: (1) to provide current estimates of the recreational activities, or uses in the newly-established Voyageurs National Park that are dependent upon Crane Lake as a means of access or source of supplies, (2) to examine Crane Lake as an operating community in relationship to its physical resource base, its service to the larger society, and to the public services and agencies with which it must interact.Resource /Energy Economics and Policy,

DECISION SYSTEMS RESEARCH FOR THE TOURISM/RECREATION INDUSTRY

Resource /Energy Economics and Policy,