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Dendritic cells (DCs), monocytes, and macrophages are leukocytes with critical roles in immunity and tolerance. The DC network is evolutionarily conserved; the homologs of human tissue CD141(hi)XCR1⁺ CLEC9A⁺ DCs and CD1c⁺ DCs are murine CD103⁺ DCs and CD64⁻ CD11b⁺ DCs. In addition, human tissues also contain CD14⁺ cells, currently designated as DCs, with an as-yet unknown murine counterpart. Here we have demonstrated that human dermal CD14⁺ cells are a tissue-resident population of monocyte-derived macrophages with a short half-life of

This thesis used a previously-designed programmable GIC filter as a basis in which to incorporate a BiCMOS operational amplifier. An NPN bipolar transistor layout was designed and incorporated into an opamp layout, which was a modified version of a CMOS-only design. The BiCMOS opamp was simulated using Silvaco SmartSpice and showed considerable improvement over its CMOS equivalent. Additional improvements were made to the GIC filter to include a passgate with reduced resistance, and a correction was made to the capacitor layout. Simulations were also performed on a switchedcapacitor bilinear resistor and a switched-capacitor variable bilinear resistor. Results from the bilinear resistor simulations require further study and testing. Finally, a VLSI layout of the filter was accomplished using LASI and has been submitted to MOSIS for fabrication. http://archive.org/details/thedesignsimulat109452082 US Marine Corps (USMC) author

A stringed musical instrument of the solid body or equivalent type is provided with elongated, resonant beams which support a bridge for the strings. The resonant frequency of the beam is lowered by the use of concentrated mass portions located in or on the beam and away from supports for the beam. Electrical vibration pick-up means is associated with the beam so that vibrations thereof, in response to string vibration, will produce electrical signals which are representative of the beam vibration , the electrical signals being employed to enhance the low frequency response of the instrument. The pick-up means may be crystal, magneto-dynamic or other type suitable for producing electrical signals representative of musical string vibration.