The thesis describes the development of a novel LTCC material system for RF and microwave telecommunication purposes. The work has been divided into three parts. In the first section, the compositional and firing properties of this novel LTCC dielectric have been studied as well as its thermomechanical and dielectric properties. The second section describes the multilayer component preparation ...

We examine ceramic tape-casting and anode electrolyte co-firing for large-scale manufacturing of protonic fuel cells. confirm the reactivity Ni, a commonly used anode, with BaZr0.8M0.2O3?? (BZM20: M = Sc, In, Lu, Yb, Y or Gd). Addition 0.4 mol% NiO to BZM20 at 1778 K, produces BaM2NiO5 Gd. No reaction occurs Lu Yb. The proton conductivity all BZM20s decreases by approximately 30% because doping...

Clinical mycology laboratories now prepare fewer tease mounts of filamentous fungi but increasingly use a variety of tape touch or Scotch Tape methods to microscopically study molds. Mounts are often prepared with clear cellophane tape by a procedure similar to that described in Larone’s Third Edition of Medically Important Fungi: a Guide to Identification (1). Because it is not the most common...

Air-lubricated foil bearings are used in a variety of applications such as turbomachinery, journal bearings, dentistry equipment, etc. [1–3]. One of the most intricate applications of air-lubricated foil bearings can be found in magnetic tape drives [4], where a magnetic tape moves over a read/write head and tape drive components such as guides (stationary) and rollers (rotating). Friction is a...

Introduction Lateral tape motion (LTM) is the time-dependent displacement of magnetic tape perpendicular to the tape transport direction. Lateral tape motion may cause track misregistration between the read/write head and a previously written track, thereby limiting the recording density that can be achieved [1]. Currently, the track density of typical magnetic tape drives is approximately 40 t...

The sources of lateral tape motion in a tape drive are reviewed. Currently used measurement methods and models for lateral tape motion are analyzed and compared. The effect of roller run-out, tape edge contact, and tape tension transients on lateral tape motion is discussed. A dual stage actuator tape head is investigated to improve track-following capability and increase the track density on a...

In [2] it has been shown that infinitary strong normalization (SN∞) is Π11-complete. Suprisingly, it turns out that infinitary weak normalization (WN∞) is a harder problem, being Π12-complete, and thereby strictly higher in the analytical hierarchy. We assume familiarity with infinitary term rewriting; we further reading we refer to [5,4]. 1 Infinitary Strong Normalization and Reachability Defi...