9 research outputs found
Cybersecurity and medical devices: A practical guide for cardiac electrophysiologists
Medical devices increasingly depend on software. While this expands the ability of devices to perform key therapeutic and diagnostic functions, reliance on software inevitably causes exposure to hazards of security vulnerabilities. This article uses a recent high‐profile case example to outline a proactive approach to security awareness that incorporates a scientific, risk‐based analysis of security concerns that supports ongoing discussions with patients about their medical devices.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/138357/1/pace13102_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/138357/2/pace13102.pd
Reconciling Neutralino Relic Density with Yukawa Unified Supersymmetric Models
Supersymmetric grand unified models based on the gauge group SO(10) are
especially attractive in light of recent data on neutrino masses. The simplest
SO(10) SUSY GUT models predict unification of third generation Yukawa couplings
in addition to the usual gauge coupling unification. Recent surveys of Yukawa
unified SUSY GUT models predict an inverted scalar mass hierarchy in the
spectrum of sparticle masses if the superpotential mu term is positive. In
general, such models tend to predict an overabundance of dark matter in the
universe. We survey several solutions to the dark matter problem in Yukawa
unified supersymmetric models. One solution-- lowering the GUT scale mass value
of first and second generation scalars-- leads to u_R and c_R squark masses in
the 90-120 GeV regime, which should be accessible to Fermilab Tevatron
experiments. We also examine relaxing gaugino mass universality which may solve
the relic density problem by having neutralino annihilations via the Z or h
resonances, or by having a wino-like LSP.Comment: 21 page file plus 9 figures; updated version to coincide with
published versio
Balanço hídrico e excreção renal de metabólitos em cabras leiteiras alimentadas com feno de alfafa e palma forrageira
Objetivou-se determinar os efeitos da substituição do feno de Tifton (Cynodon spp.) por feno de alfafa (Medicago Sativa) em dietas à base de palma forrageira (Nopalea cochenillifera) sobre o balanço hídrico, funções renais e excreção mineral de cabras leiteiras. Utilizou-se 12 cabras da raça Saanen, com peso vivo de 46,23±7,5kg, produção de 3,0 kg leite/dia. O delineamento experimental foi quadrado latino (4x4), com quatro tratamentos (0%; 33,3%; 66,7% e 100% de substituição) e quatro períodos para coleta de dados e amostras. O consumo de matéria seca (CMS), expresso em kg/dia e consumo de água total apresentaram aumento linear (p<0,05) em função da substituição do feno de Tifton pelo feno de alfafa, variando de 2,25 a 2,49 kg/dia e de 10,4 a 11,6 L/dia, para os níveis 0 a 100%, respectivamente. As perdas de água, taxa de depuração endógena de creatinina (TDECr), taxa de excreção de urina (TEU), Ca, P, Mg e ureia no plasma e urina, assim como índice de excreção urinária (IEUr) e taxas de excreção fracionadas (TEF) de cabras alimentadas com feno de alfafa em substituição ao feno de Tifton em dietas à base de palma forrageira, não foram influenciados (P>0,05) pelas dietas. A substituição do feno de Tifton por feno de alfafa em até 300 g/kg de matéria seca, em dietas à base de palma forrageira para cabras em lactação, influencia no consumo de água, sem alterar os índices de excreção urinária
Statistical analysis on the concordance of the radiological evaluation of fractures of the distal radius subjected to traction
ABSTRACT OBJECTIVE: The objective of this study was to evaluate the current classifications for fractures of the distal extremity of the radius, since the classifications made using traditional radiographs in anteroposterior and lateral views have been questioned regarding their reproducibility. In the literature, it has been suggested that other options are needed, such as use of preoperative radiographs on fractures of the distal radius subjected to traction, with stratification by the evaluators. The aim was to demonstrate which classification systems present better statistical reliability. RESULTS: In the Universal classification, the results from the third-year resident group (R3) and from the group of more experienced evaluators (Staff) presented excellent correlation, with a statistically significantp-value (p < 0.05). Neither of the groups presented a statistically significant result through the Frykman classification. In the AO classification, there were high correlations in the R3 and Staff groups (respectively 0.950 and 0.800), withp-values lower than 0.05 (respectively <0.001 and 0.003). CONCLUSION: It can be concluded that radiographs performed under traction showed good concordance in the Staff group and in the R3 group, and that this is a good tactic for radiographic evaluations of fractures of the distal extremity of the radius