Family relationships of self-care-dependent older people and institutionalized rate to nursing homes.

BACKGROUND: The government recommends home care for self-care-dependent older people in order to suppress care expenditure. Family relationships between primary caregivers and self-care-dependent older people might be one of the factors influencing the institutionalized rate. METHOD: We investigated family relationships between primary caregivers and self-care-dependent older people at home in the rural town of Oodate, Akita Prefecture, and the urban district of Katsushika, Tokyo, in 2003. One thousand and thirty-six primary caregivers completed the questionnaire and entered the present study. Two years later, we prospectively followed how the family relationship between them influenced the institutionalized rate in 2005. Finally, 556 primary caregivers completed the questionnaire in 2005. RESULTS: The institutionalized rate of subjects with poor family relationships (31%) was significantly higher than that of subjects with good family relationships (12%). CONCLUSION: Good or poor family relationships were significantly related to psychological strains and might determine the institutionalized rate in nursing homes.

Chlorophenol hydroxylase activity encoded by TfdB from 2,4-dichlorophenoxyacetic acid (2,4-D)-degrading Bradyrhizobium sp. strain RD5-C2.

The tfdB gene encoding chlorophenol hydroxylase and its homolog were found in 2,4-dichlorophenoxyacetic acid (2,4-D)-degrading strain RD5-C2, which belongs to Bradyrhizobium sp. of alpha-Proteobacteria. The nucleotide and deduced amino acid sequence identities of the two genes, designated tfdBa and tfdBb, were 60% and 57% respectively. Their nucleotide sequences most closely matched those of previously reported tfdB, which consisted of those from 2,4-D-degrading beta- and gamma-Proteobacteria and Sphingomonas sp. in alpha-Proteobacteria, with 61-67% identity. The TfdBa expressed in Escherichia coli showed the highest activity for 2,4-dichlorophenol but a narrower range of activity for the other chlorophenols than previously reported TfdBs. In the case of TfdBb, however, no observable activity for any chlorophenols or phenol was detected, although production of a protein with an appropriate molecular size was observed. Based on codon usage patterns and the GC content of the genes, it probable that the tfdBa genes in the 2,4-D-degrading Bradyrhizobium sp. were obtained through horizontal gene transfer.

Fabrication of multilayered photochromic memory media using pressure-sensitive adhesives.

We fabricated a multilayered medium by a laminating process with pressure-sensitive adhesives. It was possible to reduce the thickness variations of both photosensitive layers and transparent layers by applying laminating films. This method is easy to use to pile up many layers for a multilayered medium. We fabricated twenty recording layers and demonstrated the capability to record with significant reading results. The recorded data in each layer were read out without crosstalk. We evaluated the signal-to-noise ratio and crosstalk between neighboring layers. It was found that the signal-to-noise ratio of a multilayered medium was higher than 50 dB.