The severity of the clinical picture and the duration of symptoms influenced the outcome of the operation. Despite the advanced age of some patients (> 80), the operation increased the chance of recovery from the disease.

We reviewed 38 patients aged 65 years and older with fresh Garden stage I femoral neck fractures treated nonsurgically to determine factors that influence fracture union. The mean follow-up period was 20 (range 6-86) months. Twenty-three (61%) fractures united within 6 months after injury, while 15 (39%) failed to unite. The percentage of united fractures was considerably higher (p < 0.01) in patients who began bed-to-wheelchair transfer training 14 days or later after injury than in those who began training within 13 days. The incidence of union was considerably higher (p < 0.05) in patients who began ambulation 20 days or later after injury than in those who began within 19 days. There was no statistical difference in the amount of valgus or retroversion of the femoral head between patients whose fractures united and those whose fractures did not. Patients without severe dementia regained the ability to walk significantly more frequently than did patients with severe dementia (p < 0.05).

An axially chiral bisphosphine, Fc-Segphos (1), which possesses diferrocenylphosphino-donor moieties, was prepared as a racemate, and its optical resolution was achieved by the use of chiral HPLC. Ligand 1 coordinated to a palladium(II) cation in a bidentate fashion to construct a unique chiral environment at the palladium center due to the sterically demanding ferrocenyl groups. Ligand (R)-1 was applied in the palladium-catalyzed asymmetric synthesis of axially chiral allenes showing good enantioselectivity of up to 92% ee. In general, (R)-1 displayed better enantioselectivity than the parent Segphos in the palladium-catalyzed reaction, and the Pd/(R)-1 species showed up to 18% ee enhancement over the (R)-Segphos-derived palladium catalyst.

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The MEE (More Electric Engine) is a concept for engine system electrification and is an evolutionary step in engine system design that contributes to the reduction of aviation CO2 emissions. Mifee (Metering and integrated fuel feeding electrification) and the E3M (Engine Embedded Electric Machine) are the key technologies of the MEE. The purpose of engine thermal management is maintaining the balance between heat generation by the engine system and heat dissipation to the outside of the engine. In recent engine system designs, thermal system design has become an issue because of increased heat generation within the system. For example, a recently developed turbo-fan engine system increases the heat generation by introduction of a fan drive gear system that produces a large amount of heat in addition to the conventional heat source, such as engine main bearings and gears. The MEE will have further heat sources within its system, like the E3M, which is a high-power electric machine. In this paper, an investigation approach and the result of a feasibility study of the MEE thermal management system is described. In addition, the perspective of the technology trend from the MEE toward future hybrid propulsion is also discussed. The global requirements for climate protection strongly demand game-changing technology that significantly improves the aircraft’s overall efficiency. A series/parallel partial hybrid propulsion system, in which both a turbo-fan engine and electrical motor-driven fans generate propulsive power, is considered to be one of the most promising approaches for the future commercial aircraft hybrid propulsion system. The MEE and E3M technology evolves until it will be applied in hybrid propulsion system.