Current Research: Current Research in the Upper McGee Creek Drainage, Oklahoma

In recent years the Choctaw Nation has acquired a roughly 80 square mile ranch in the western edge of the Winding Stair Mountains of southeastern Oklahoma. The land is currently a working ranch and timber management area. Choctaw Forestry manages timber activities and range management with the intention of returning the land to an oak savanna setting. Active logging of pine and selected hardwoods and on-going controlled surface burns are included in Forestry activity on the ranch. The project is supported by the Choctaw Nation Historic Preservation Department, which is responsible for the inventory and protection of the cultural resources found on the property. Archeological surveys were conducted in the McGee Creek Reservoir area in the 1970s and 1980s and a wide range of significant cultural resources were located in the reservoir area, less than 10 miles south of the ranch. Only one previous survey was conducted on the ranch property, by the Oklahoma Conservation Commission in the 1980s ahead of construction of an upland flood control reservoir. Significant archeological resources were recorded. Since very little was known about the ranch property itself, it was presumed that this portion of the McGee Creek drainage would also have a similar archeological importance

Current Medical Research: Summer/Fall 2017

This issue of Current Medical Research (CMR) includes studies that provide evidence that use of natural family planning (NFP) can be helpful for subfertile couples wishing to achieve a pregnancy, the effectiveness of a method of NFP during breastfeeding, and the effects of using NFP on marital relationships. This review also includes evidence on predicting the sex of a baby by timing intercourse, evidence that brain injuries can be reflected in changes in the menstrual cycle, and that women prefer methods of family planning that have no side effects. The issue ends with an in-depth review of new technologies that aid in the use of NFP. Topics covered include subfertile couples, breastfeeding, marriage, predicting the sex of a baby, brain injuries, and new technologies

Some Current Advances in Cavitation Research

Several recent experimental and analytical investigations of cavitating flows have revealed new phenomena which clearly affect how we should view cavitation growth and collapse and the strategies used to ameliorate its adverse effects. On the scale of individual bubbles it is now clear that the dynamics and acoustics of single bubbles are severely affected by the distortion of the bubble by the flow. This distortion depends on the typical dimension and velocity of the flow (as well as the Reynolds number) and therefore the distortion effects are very important in the process of scaling results up from the model to the prototype. The first part of the lecture will discuss the implications of these new observations for the classic problem of scale-up. Another recent revelation is the importance of the interactions between bubbles in determining the coherent motions, dynamic and acoustic, of a cloud of cavitation bubbles. The second part of the lecture focusses on these cloud cavitation effects. It is shown that the collapse of a cloud of cavitating bubbles involves the formation of a bubbly shock wave and it is suggested that the focussing of these shock waves is responsible for the enhanced noise and damage in cloud cavitation. The paper describes experiments and calculations conducted to investigate these phenomena in greater detail as part of an attempt to find ways of ameliorating the most destructive effects associated with cloud cavitation

Current Medical Research: Summer–Fall 2009

Note that the “Current Medical Research” feature focuses on issues relevant to natural family planning and the beginning of life. This piece is complemented by medical reviews published in The National Catholic Bioethics Quarterly, which focus more on other areas of general medical interest including end-of-life issues.—Ed. </jats:p