BACKGROUND Current bone anchored hearing solutions (BAHSs) have incorporated automatic adaptive multichannel directional microphones (DMs). Previous fixed single-channel hypercardioid DMs in BAHSs have provided benefit in a diffuse listening environment, but little data are available on the performance of adaptive multichannel DMs in BAHSs for persons with unilateral sensorineural hearing loss ...

OBJECTIVE The efficacy of wireless connectivity in bone-anchored hearing was studied by comparing the wireless and acoustic performance of the Ponto Plus sound processor from Oticon Medical relative to the acoustic performance of its predecessor, the Ponto Pro. STUDY SAMPLE Nineteen subjects with more than two years' experience with a bone-anchored hearing device were included. Thirteen subje...

Um procedimento de extração no ponto nuvem de sinergia rápida foi desenvolvido para a separação e determinação de traços de chumbo em amostras de água e de alimentos antes da determinação por espectrometria de absorção atômica com chama (FAAS). A extração no ponto nuvem de sinergia rápida (RS-CPE) simplifica e acelera de forma eficiente o procedimento tradicional de extração no ponto nuvem (CPE...

Current taxonomy of western Eurasian trout leaves a number of questions open; it is not clear to what extent some species are distinct genetically and morphologically. The purpose of this paper was to explore phylogeography and species boundaries in freshwater and anadromous trout from the drainages of the Black and the Caspian Seas (Ponto-Caspian). We studied morphology and mitochondrial phylo...

Cerebellar white matter (WM) connections to the central nervous system are classified functionally into the Spinocerebellar (SC), vestibulocerebellar (VC), and cerebrocerebellar subdivisions. The SC pathways project from spinal cord to cerebellum, whereas the VC pathways project from vestibular organs of the inner ear. Cerebrocerebellar connections are composed of feed forward and feedback conn...

Ponto-Caspian gobies are a flock of five invasive fish species that have colonized freshwaters and brackish waters in Europe and North America. One of them, the round goby Neogobius melanostomus, figures among the 100 worst invaders in Europe. Current methods to detect the presence of Ponto-Caspian gobies involve catching or sighting the fish. These approaches are labor intense and not very sen...

A spectacular adaptive radiation of crustaceans has occurred in the Black, Caspian, and Aral seas. This study tests several evolutionary scenarios based on the extent of genetic differentiation and the phylogenetic relationships among endemic mysids and gammarid amphipods from the Black and Caspian seas. Molecular phylogenies for these taxa were based on two mitochondrial genes: cytochrome c ox...

Exerćıcio 1.1. Suponha que f : R → R preserva a distância Euclidiana e fixa a origem. Mostre que: (1) f leva segmentos de recta em segmentos de recta; (2) f(λx) = λf(x) para λ ∈ R e x ∈ R; (3) f leva o ponto médio de um segmento no ponto médio da sua imagem; (4) f(x+ y) = f(x) + f(y) para x,y ∈ R; (5) 〈f(x), f(y)〉 = 〈x,y〉 para x,y ∈ R; (6) f(x) = Sx para x ∈ R, onde S ∈ M3×3 é ortogonal (ou sej...

A case of lateral ponto-medullary infarction was studied pathologically using serial sections of the involved region. The infarct involved 4 mm of the lower pons and 10 mm of the upper medulla. The feeding arteries of most of the infarct were traced back to form one small artery 350 micron in diameter which arose from an artery 2 mm in diameter identified as the posterior inferior cerebellar ar...