During on an extensive investigation of a multi-story timber building with light-frame construction, several stages of the building process and their impact on sound transmission were observed. The sound insulation properties of the building components were measured before and while the buildings were occupied. Furthermore, interviews with the occupants were conducted. This procedure made it po...

Recent studies on the transcriptional regulation of two linked, imprinted genes, Igf2 and H19, have provided evidence for a novel mechanism of epigenetic control. DNA methylation controls the activity of an insulator element located between the two linked genes by regulating the binding of the zinc-finger protein CTCF.

“OUTSIDE-IN” ABRASIONS: A NEW PHENOMENA — MORE QUESTIONS THAN ANSWERS We may divide abrasions according to mechanism into “outside-in” and “inside-out” abrasions. The “outside-in” abrasions are well known in the pocket as the result of friction between leads or between the lead and the device, as well as in the venous system, with tearing surfaces among leads, first rib, and clavicle. However, ...

Degradation and failure of aircraft wiring insulation is of particular interest which could lead to smoke and fire due to arcing. With two recent major air accidents and hundreds of major incidents over the past twenty years, health monitoring and sustainment of wiring, particularly for aging aircraft is a major concern. The results of a technique based on TDR, using trains of successive pulses...

The number and diameter of strands to minimize loss in a litz-wire transformer winding is determined. With fine stranding, the ac resistance factor can be decreased, but dc resistance increases as a result of the space occupied by insulation. A power law to model insulation thickness is combined with standard analysis of proximity-effect losses to find the optimal stranding. Suboptimal choices ...

Pt/Ir electrodes have been extensively used in neurophysiology research in recent years as they provide a more inert recording surface as compared to tungsten or stainless steel. While floating microelectrode arrays (FMA) consisting of Pt/Ir electrodes are an option for neuroprosthetic applications, long-term in vivo functional performance characterization of these FMAs is lacking. In this stud...

Inverters are commonly used in various motor applications. This greatly increases the pulse endurance stress of the wire due to switching transience. A new type of wire with two layers & three layers of Corona resistant material has been developed by BCwire® to overcome the aforementioned problem. This paper will give a brief introduction of the wire, detailed test procedure, and preliminary re...

Buildings consume too much energy. For example, 16.6% of all the energy used in the United States goes towards just the heating and cooling of buildings. Many governments, organizations, and companies are setting very ambitious goals to reduce their energy use over the next few years. Because the time periods for these goals are much less than the average lifetime of a building, existing buildi...

ii iii ABSTRACT This report documents experiments conducted to determine the head-loss characteristics associated with calcium silicate insulation debris accumulated on a sump screen. These experiments were performed under the direction of Los Alamos National Laboratory in facilities operated by the Civil Engineering Department of the University of New Mexico. Experiments confirmed that calcium...