HYPOTHESIS An experimental polymeric sealant (CoSeal [Cohesion Technologies, Palo Alto, Calif]) provides equivalent anastomotic sealing to Gelfoam (Upjohn, Kalamazoo, Mich)/thrombin during surgical placement of prosthetic vascular grafts. DESIGN Randomized controlled trial. SETTING Nine university-affiliated medical centers. PATIENTS One hundred forty-eight patients scheduled for implanta...

Plasmalemmal repair is necessary for survival of damaged eukaryotic cells. Ca(2+) influx through plasmalemmal disruptions activates calpain, vesicle accumulation at lesion sites, and membrane fusion proteins; Ca(2+) influx also initiates competing apoptotic pathways. Using the formation of a dye barrier (seal) to assess plasmalemmal repair, we now report that B104 hippocampal cells with neurite...

Pressure waves and vibrations in the heart and great vessels may be conducted to a manometer outside the body by a system of tubing filled with fluid. More than a metre of tubing is usually needed as the circulation is entered at an arm vein. Any such system has the following defects. 1. Delay in the transmission of the low frequency pressure waves to the manometer: the delay will vary slightly...

The exceptional sensitivity of mammalian hearing organs is attributed to an active process, where force produced by sensory cells boost sound-induced vibrations, making soft sounds audible. This process is thought to be local, with each section of the hearing organ capable of amplifying sound-evoked movement, and nearly instantaneous, since amplification can work for sounds at frequencies up to...

In this essay the mainstream story about how resources are allocated in a market economy is challenged. The conventional view is that a change in relative prices leads to a change in the composition of output as a result of a reallocation of the stock of primary factors of production (land, labor and capital). No investment is required. This is possible, however, only if the primary factors of ...

Two experiments were conducted to investigate the effects of physical embodiment in human–agent interaction. Experiment 1 (N 1⁄4 32) shows positive effects of physical embodiment on the feeling of an agent’s social presence, the evaluation of the agent, the assessment of public evaluation of the agent, and the evaluation of the interaction with the agent. A path analysis reveals that the feelin...

To develop a matched sealing material for socket rehabilitation of grey cast iron pipes, an epoxy resin is modified by the addition of different components to improve the flexibility. Three different modifications are made by adding ethylene-propylene diene monomer (EPDM) rubber powder, reactive liquid polymer (ATBN) and epoxidized modifier. In this paper the effect of the modification method a...