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The article presents a study evaluating the self-reported visualization rate (VR) of ovaries by sonographers during transvaginal sonographic (TVS) examinations in an effort to develop software that would automatically measure VR. Using data from the UK Collaborative Trial of Ovarian Cancer Screening (UKCTOCS), it found that sonographers may mistake other biological structures for normal ovaries and concludes that quality control (QC) metrics based on self-reports are unreliable.

It has been shown that through the process of resonant excitation the fragmentation of ions confined in a low-pressure (<0.05 mTorr) linear ion trap (LIT) can be accomplished while maintaining both high fragmentation efficiency and high resolution of excitation. The ion reserpine, 609.23 Da, has been fragmented with efficiencies greater than 90% while a higher mass ion, a homogeneously substituted triazatriphosphorine of mass 2721.89 Da, has been fragmented with 48% efficiency. This was accomplished by extended resonant excitation by low-amplitude auxiliary RF signals. Computer modelling of ion trajectories and analysis of the trapping potentials have demonstrated that a reduction in neutralization of ions on the rods (or losses on the rods) and increased fragmentation is a consequence of higher order terms in the potential introduced by the round-rod geometry of the LIT. [Copyright &y& Elsevier]

Metal additive manufacturing techniques typically operate using powders with limited particle size ranges, but atomisation processes produce significant amounts of particles outside these ranges, resulting in an accumulation of out-of-size specification metal powders without a clear use case. Field-assisted sintering technology (FAST) can provide an alternative, solid-state processing route to consolidate these powders into billets for subsequent processing, or directly into near-net shape components. In this study, surplus powders of A20X, an aerospace approved aluminium alloy developed by Aluminium Materials Technologies (ECKART GmbH), were processed using FAST and subsequently hot rolled to produce sheet material. Tensile properties were similar to hot rolled conventional cast material and comparable to additively manufactured product. This indicates that FAST is an effective option for converting surplus metal powders into useful products, while improving sustainability in the additive supply chain. [ABSTRACT FROM AUTHOR]

Inheritance patterns of randomly amplified polymorphic DNA (RAPD) phenotypes were tested in 13 full-sib families of lake trout Salvelinusnamaycush. Single-pair matings of parents with known phenotypes weremade, and up to 20 progeny of each mating were used to test inheritance patterns. Seven RAPD primers amplified 13 polymorphic bands. Withthe exception of one family, expected segregation ratios for dominant Mendelian genetic traits were observed. Our results support previously reported findings that RAPD markers can be considered Mendelian traits and therefore could be used for analysis of genetic population structure. [ABSTRACT FROM AUTHOR]