Microbiological contamination of retrieved tissues has become a very important topic and a critical aspect in the safety of allografts. We have analysed contamination in 11,129 tissues with a longitudinal contamination profile for each individual tissue. More specifically, 10,035 musculoskeletal tissues and 1,094 cardiovascular tissues were retrieved from a total of 763 multi-tissue donors, of ...

Mechanical loading and alpha-adrenergic receptor stimulation have both been shown to induce hypertrophy in isolated neonatal heart cells. The present study examined the effects of adrenergic hormones and contractile activity on the hypertrophic response in isolated adult feline cardiomyocytes maintained for more than 14 days in insulin- and serum-supplemented medium. Measurements of the hypertr...

Raf-1 regulates migration af-1 signaling is known to be important for proliferation, differentiation, and survival. Now, Ehrenreiter et al. report that it is required for cell migration and wound healing (page 955). Unlike other Raf-1 functions, this one doesn’t require Raf-1 kinase activity, a theme the researchers think will be recurrent in future Raf-1 biology. When Raf-1 is knocked out in t...

Facial recognition software is pervasive in modern society with everything from social networks like Facebook to local security systems collecting and analyzing images of us at an alarming rate. This software is applied in many diverse domains, but what they all come down to is analyzing pictures to discover the identity of the people in them. Some places in the world are more strict about secu...

Although our beloved standard model of quarks and leptons offers a complete, consistent and correct description of most particle phenomena, lots of vexing questions remain unanswered, such as: Why are the gauge group and the fermion masses what they are? Why three families of quarks and leptons? What breaks electroweak symmetry? How about gravity? Leaving such profound meta-questions to supersy...

Heart cells made from embryonic stem (ES) cells improve the function of injured mouse hearts, report Kolossov et al. (page 315 ). Cell replacement is an attractive therapy for heart failure, which is currently treatable only by organ transplant. But which source of cells makes the best starting material has been a matter of debate. Bone marrow cells were rep...

Abstract Displacement Talbot lithography can rapidly pattern periodic nanostructures with high depth of focus over large area. Imperfections in the phase mask profile and stage movement inaccuracies during exposure cause linewidth variation every second line binary gratings. While this beating is barely visible patterned photoresist, it leads to substantial when transferred into aspect ratio si...

We study numerically the dynamics of jets and drops in a microcapillary coflow device. The co-flow stream encounters different flow regimes, including dripping, jetting. Using a level-set/finite element axysimmetric numerical simulation, we study the dynamics of breakup of a jet subject to flow rate perturbations. A scaling law for the width of the unperturbed jet is presented and compared to e...

Abstract — The hydrodynamic system that admits the development of internal wave attractors under biharmonic forcing is investigated. It shown in case low amplitude external pattern consists two interact between themselves only slightly: total energy equal to sum energies components with high accuracy. In nonlinear more complex way which leads a cascade triad interactions generating rich set tim...

We present a dual-frequency shift scheme to produce chaos and beating in an erbium-doped fiber laser while we give this physics model including photo attenuator absorbing the photon, where absorption frequency of can be shifted, pump modulator shifting modulation frequency. It found that modulated produces chaos, beating, lot quasi-periodic states when both level are by modulator. Our numerical...