Table screen 360-degree holographic display using circular viewing-zone scanning.

A table screen 360-degree holographic display is proposed, with an increased screen size, having an expanded viewing zone over all horizontal directions around the table screen. It consists of a microelectromechanical systems spatial light modulator (MEMS SLM), a magnifying imaging system, and a rotating screen. The MEMS SLM generates hologram patterns at a high frame rate, the magnifying imaging system increases the screen of the MEMS SLM, and the reduced viewing zones are scanned circularly by the rotating screen.

Excited-state relaxation process of free-base and oxovanadium naphthalocyanine in near-infrared region.

Excited-state relaxation process of free-base and oxovanadium naphthalocyanine (H(2)Nc and VONc) in solutions and in polymer films was studied by transient absorption measurements. In polymer films only H-aggregate was observed with H(2)Nc with increasing its weight fraction, whereas VONc formed both H- and J-type aggregates. The transient absorption of singlet excited-state of H(2)Nc and VONc in toluene solution decayed with time constant of 250 +/- 30 and 12 +/- 2 ps, respectively.

Influences of drugs on the oxygen uptake rate and biosorption of activated sludge.

To prevent pollution of the water environment by drugs, we evaluated factors affecting the elimination of drugs by inducing reactions between the pharmaceutical chemicals originating from the drugs and activated sludge (AS) in test tubes. Of 30 pharmaceutical chemicals examined, ibuprofen (IBP) as an anti-inflammatory drug most markedly inhibited the oxygen uptake rate (OUR) of AS, and its IC50 was 172 mg/l. The IBP elimination from the wastewater was due to the significant biosorption by AS and was based on the time-response and dose-response relationships.

[Relation between oxygen uptake rate and biosorption of activated sludge against chemical substance].

In this study, the elucidation of the toxicity mechanism was undertaken regarding the IC(50) of the oxygen uptake rate (OUR) with relevance to the biosorption as a toxicity evaluation of chemical substances for activated sludge (AS). At the IC(50) of<100 mg/l, malachite green (MG) and crystal violet (CV) were confirmed in the group showing relatively strong OUR inhibition. These dyes were markedly biosorbed by AS in a short time.