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With the annual incidence of hip fractures and hip fracture fixation rising, the need for conversion total hip arthroplasty has also risen. About half of the 280,000 hip fractures that occur annually in the United States are extracapsular. Commonly extracapsular hip fractures are treated with either cephalomedullary nails (CMNs) or sliding hip screws (SHS). More recently, there has been a shift toward increased CMN use due to increased training with this fixation method as well as perioperative and biomechanical benefits. Given this shift, orthopedic surgeons need to understand the factors that lead to CMN failure. Failed CMN treatment leaves both patients and surgeons with few management options including revision fixation with or without osteotomy, conversion total hip arthroplasty, and conversion hemiarthroplasty. Surgeons must consider the patient and injury characteristics before deciding the best treatment plan. Conversion total hip arthroplasty is indicated in younger patients without femoral head and/or acetabular articular injury, degenerative joint disease, or avascular necrosis. Conversion total arthroplasty is a technically demanding and resource-intensive surgery associated with lower success rates and outcomes than primary total hip arthroplasty. Orthopedic surgeons should have thorough understanding of preoperative workup needed prior to surgery, implant selection associated with best outcomes, most common surgical approaches used, intraoperative considerations, and complications associated with conversion total hip arthroplasty. A comprehensive understanding of these concepts gives patients the best chance of having a successful outcome. [ABSTRACT FROM AUTHOR]

Conventional golf course fairway irrigation relies on visual observation of the turfgrass, followed by secondary considerations of short‐term weather forecasts, which oftentimes lead to 'blanket' applications to an entire area. Precision irrigation may achieve water use reductions by irrigating only where, when, and in the amount needed. Technology can further enhance its application; for example, using global navigation satellite system (GNSS)‐equipped soil moisture sensors for creating fairway soil moisture maps to identify variability. However, research regarding soil moisture variability on fairways at golf courses that differ by climatic region and course characteristics is limited. The objective of this case study was to report fairway soil moisture variability findings from nine golf courses in eight states in the United States that completed a soil moisture mapping protocol during 2019–2022. Each course used a handheld GNSS‐equipped soil moisture device to collect georeferenced soil moisture (percentage volumetric water content [VWC]) data from seven to 14 of their fairways. Soil moisture variability was assessed through summary statistics, box and whisker plots, and spatial maps. The mean soil moisture on fairways across courses was 22.4–48.8% VWC, the range was 27.6–43.7% VWC, and the CV was 7.5–39.4%. Box and whisker plots and spatial maps of soil moisture aided in visualizing variability within and between fairways at all courses. Results suggest that golf course fairway soil moisture variability is inevitable regardless of climatic region and course characteristics, which further reiterates the need for advanced irrigation practices and technologies for water conservation via precision irrigation. Core Ideas: GNSS‐equipped soil moisture sensors allow for mapping fairway soil moisture variability.Soil moisture variability on fairways at nine U.S. golf courses was evaluated.Soil moisture variability is inevitable between and within fairways. [ABSTRACT FROM AUTHOR]

Abstract: As part of the refocusing of NASA from Space Station research to exploration research, we are pursuing a number of proposed and funded projects for lunar exploration using cryogenic techniques. This paper gives a summary of these projects which include: (1) Using passive radiative cooling for separation and storage of volatiles from lunar regolith; (2) Studies of boiling and two-phase flow under lunar gravity; (3) SQUID-based MRI for monitoring astronaut health; (4) Studies of volatiles and water ice in permanently shadowed craters at the lunar poles; and (5) Seismic search for strange quark matter using the Moon as a large and seismically quiet detector. [Copyright &y& Elsevier]