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Low-impedance microcoaxial cables have been developed to supply power to microchips. These uniquely low-inductance cables are enabled by a very thin dielectric compared with a conventional 50-Ω cable. These cables will be used in a novel packaging platform in which traditional interconnects are replaced by microscale coaxial cables. This method saves time and cost for small production volumes and custom electronics, compared with high density interconnects and silicon interposer technologies. These microcoaxial cables are designed to have minimal impedance to meet the stringent power supply requirements of today's electronics. As a concrete example, we consider a Kintex 7 Field-Programmable Gate Array (FPGA). To power this chip with interconnect lengths of 25 mm and a voltage ripple less than 30 mV, a resistance of 3.20–6.40 mΩ/mm and an inductance of 12–15 pH/mm is needed. The tight voltage ripple constraint is what makes this device challenging to design power distribution for. One cable fabricated by Draper, to achieve these power requirements, is the focus of this article. The Draper cable consists of a 127-μm Copper core, 12-μm polyesterimide dielectric layer, and 55-μm gold shield. The measured resistance per unit length at DC, inductance per unit length, capacitance per unit length, and characteristic impedance of the Draper cable are 2.0 mΩ/mm, 40 pH/mm, 118 pF/mm, and 6.56 Ω, respectively.

Objective. This work sought to evaluate result indicators of the specialized vascular access program led by nursing during the period between 01 January 2018 and 31 December 2019 at Fundación Cardioinfantil -Instituto de Cardiología (Colombia).  Methods. This was a retrospective descriptive study based on medical records of 1,210 patients who received insertion of vascular access devices by the specialized group of nurses. Result indicators are described. Results. Of all the patients who received insertion of a vascular access catheter, 53.1% were women, with mean age of 34.2 years, admitted to critical care services with cardiovascular problems and sepsis (90.2%). Placement of the peripherally inserted central catheter, midline and arterial was echo-guided between 91% and 100%, with a success rate on the first puncture of 66%. The average duration time of the peripherally inserted central catheter was 25.3 days, that of the midline catheter was 8 days, with a reach of 57% until the end of the treatment. The rate observed per catheter-days of overall phlebitis was 2.03, for positive blood culture of the central peripheral insertion device was 1.9 and thrombosis of 0.50; and arterial line thrombosis was 11.7. Conclusion. The Vascular Access Device Program led by nursing reported rational use of these elements with structured therapeutic purposes according with the complexity of the patients admitted to hospitalization. Improvement plans must be implemented to increase efficacy in post-admission insertion times, reduce infection rate and thrombosis through effective follow-up and control mechanisms.

An acoustic anemometer is under development for measuring wind speeds on Mars. Acoustic anemometry allows simultaneous measurement of wind speed and the speed of sound by measuring the acoustic time of flight in the forward and reverse directions. Acoustic anemometry avoids some

Draper is developing a new paradigm in microelectronics packaging, in which the interconnects among components are made, not through the substrate, but rather through micro-coaxial wires. In this paper, we describe the design and fabrication of micro-coaxial wire segments of diameters between 30 m and 250 m. The micro-coax comprised a center metal wire, a polymer dielectric layer, and electroplated gold shield. To facilitate integration of the micro-coax on the package, the micro-coax were prepared in ~20 mm segments that are stripped back at the ends to expose < 1 mm of the core wire. To achieve the necessary stripping of the micro-coax shield layer, we have utilized two different seeding and electroplating processes and fixtures. We describe both processes and the fixture design that allowed the scale up in fabrication volume from 0.1 m of micro-coax to 1.2 m of micro-coax per batch.