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Biomedical subjects

H R Meyer

Publications and source records attributed to H R Meyer.

At least 19 recordsLinked to original sources
PubMed2006

Characterization of surface soils at a former uranium mill.

Dawn Mining Company operated a uranium mill in Stevens County, Washington, from 1957 to 1982, to process ore from the Midnite Mine, and from 1992 through 2000, to extract uranium from mine water treatment sludge. The mill was permanently shut down in 2001 when the Dawn Mining Company radioactive materials license was amended to allow direct disposal of water treatment sludge to a tailings disposal area at the mill. The mill building was demolished in 2003. Site soil characterization took place in 2004. Soil cleanup is ongoing. Contaminated soils on the site were characterized using a GPS-based gamma scanning system. A correlation between shielded gamma exposure rate and concentration of Ra in surface soils was developed. Subsurface soils were sampled using backhoe trenches. This system proved efficient and accurate in guiding development of the remedial action planning for the site and subsequent soil cleanup.

Gamma Rays↗
PubMed2005

Toward the framework and implementation for clearance of materials from regulated facilities.

The disposition of solid materials from nuclear facilities has been a subject of public debate for several decades. The primary concern has been the potential health effects resulting from exposure to residual radioactive materials to be released for unrestricted use. These debates have intensified in the last decade as many regulated facilities are seeking viable management decisions on the disposition of the large amounts of materials potentially containing very low levels of residual radioactivity. Such facilities include the nuclear weapons complex sites managed by the U.S. Department of Energy, commercial power plants licensed by the U.S. Nuclear Regulatory Commission (NRC), and other materials licensees regulated by the NRC or the Agreement States. Other facilities that generate radioactive material containing naturally occurring radioactive materials (NORM) or technologically enhanced NORM (TENORM) are also seeking to dispose of similar materials that may be radioactively contaminated. In contrast to the facilities operated by the DOE and the nuclear power plants licensed by the U.S. Nuclear Regulatory Commission, NORM and TENORM facilities are regulated by the individual states. Current federal laws and regulations do not specify criteria for releasing these materials that may contain residual radioactivity of either man-made or natural origin from regulatory controls. In fact, the current regulatory scheme offers no explicit provision to permit materials being released as "non-radioactive," including those that are essentially free of contamination. The only method used to date with limited success has been case-by-case evaluation and approval. In addition, there is a poorly defined and inconsistent regulatory framework for regulating NORM and TENORM. Some years ago, the International Atomic Energy Agency introduced the concept of clearance, that is, controlling releases of any such materials within the regulatory domain. This paper aims to clarify clearance as an important disposition option for solid materials, establish the framework and basis of release, and discuss resolutions regarding the implementation of such a disposition option.

Decontamination↗
PubMed1996

The female foot.

Explore the source record for details and available documents.

Age Factors↗
PubMed1995

[Long-term results with women's feet].

When ladies complain of painful feet, they usually have hallux valgus. They can hardly accept that their ailment has something to do with too narrow shoes; therefore, it is not easy to explain to them, that usually the problem could be solved with comfortable large foot-wear and that an operation is not always necessary. On the other hand, operations for hallux valgus must not be labelled simply as a luxury procedure. Many patients can be relieved of pain and given the opportunity to wear acceptable fashionable shoes, provided that the appropriate method is chosen for each patient individually. This choice depends not only on the deformity of the foot, but to a high degree on age, profession and the situation of the patient, and what is most important, on her ideas and wishes.

Female↗
PubMed1990

Regnauld procedure for hallux valgus.

Between 1975 and 1986, 75 female patients with painful hallux valgus deformity underwent 100 Regnauld procedures. Of these 75 patients, 50 patients underwent unilateral surgery and 25 patients had simultaneous bilateral surgery. The average age of our patient was 45 years. These operations were performed by two different orthopedic surgeons. Over 90% of our patients were satisfied with the operation. Eighty-five percent had no pain, had a satisfactory cosmetic result, and had no complaints about their footwear. Only one patient had severe problems with high heels. Mobility and radiographic evaluation did not correspond with the clinical results. This type of procedure can be performed as an alternative to the Keller-procedure in the middle-aged or elderly patient with no severe arthritis and no osteoporosis.

Adult↗