Gas-liquid membrane contactors offer several practical advantages including high surface area per unit volume; independent control of gas and liquid velocities without any flooding, loading, weeping, or foaming, pre-determined gas–liquid interfacial area, membrane modules, capability of linear scale-up; low corrosion problems, and low operation and capital costs. Two common types of membrane co...

This paper presents the first DRM+ (Digital Radio Mondiale, Mode E) Single Frequency Network (SFN) in the air. A field trial has been conducted to evaluate the performance in different environments. Due to it’s relatively small bandwidth, flat fading in the overlapping area can become a problem. Different solutions to overcome this problem are evaluated in this paper. Adding different delays to...

New advances toward microstructural improvement of epitaxial CeO2 films grown by chemical solution deposition and their use as buffer layers for YBa2Cu3O7 (YBCO) films are presented. We demonstrate that the degree of epitaxy and the fraction of (001) atomically flat surface area are controlled by the incorporation of tetravalent (Zr) or trivalent (Gd) cations into the ceria lattice. The degree ...

In this paper, a paradigm for the automatic scoring of flat tongue and raised tongue in computer-assisted Mandarin learning is presented. In this paradigm, distinctive features of Mandarin is used to distinguish the two classes consonants and score them. The confusion of them mainly results from different articulation places. The method based on the distributing of concentrated frequency area i...

Flow visualization with high-speed video of evaporating water films falling over flat horizontal tubes, representative of the external surfaces of microchannel tubes, is presented. Experiments were conducted with 1.4 mm thick and 27 mm tall tubes over a film Reynolds number range of 23 < Re < 126. In addition to a qualitative description of the flow mechanisms, this work quantifies key droplet ...

In Bodega Harbor, California, the nemertean Paranemertes peregrina spawns in June or July. Adults in the study area were small in comparison to worms found on two Washington mud flats. Population density of active worms averaged 7.38 worms/m 2 , with much variation due to time of day of low tides. Approximately 28 percent of the active population ate during the low tide periods that were sample...