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Biomedical subjects

H Miyake

Publications and source records attributed to H Miyake.

At least 595 records · Page 33Linked to original sources
PubMed1981

[On method of impact test for composite resins (author's transl)].

Method of impact test for composite resins was investigated according to JIS K 7110, "Method of Izod impact test for rigid plastics". The following views were suggested from the results of the experiments. 1) For the heterogeneous paste-type materials such as composite resins, the test specimens should be prepared with a metal mold that can add the V-notch to a test piece on polymerization process, rather than mechanically done with frise cutter. 2) On the testing according to JIS K 7110, sample could not be saved in large amount against our expectation. Therefore, it may be necessary to develop the testing machine that has a smaller capacity.

Composite Resins↗
PubMed1981

Nasal allergy in spinning mill workers and the possibility of allergenicity of chemical fibers and cotton linters.

During a three-year period from 1976, we examined fifty eight patients with nasal allergy who worked in spinning mills or handled sewing machines. Skin tests and procative nasal tests were performed on these patients with crude and fractionated extracts from cotton linters, cotton cloth and chemical fibers. The crude aqueous antigens were extracted in dextro-phenol solution and fractionated by Saphadex G-100. It was possible that the cotton and chemical fibers included components which were the cause of hypersensitivity, but there is still doubts concerning their reaction as irritant substances. Serum specific IgE antibody was found in extracts from chemical fiber. Therefore, spinning mill dust acts as an irritant of the nose add the possibility of antigenicity of the dust for immediate type nasal allergies can not be denied from the present study.

Acrylic Resins↗
PubMed1980

Behavioural effects in rats following repeated exposure to methyl bromide.

Rats were exposed to methyl bromide (MB) at concentrations of 200 ppm and 300 ppm, 4 h per day, 5 times weekly, for 3 weeks. After the final exposure, behavioural tests for emotional response equilibrium function, the function of the peripheral nerve and the circadian rhythm of spontaneous activity were performed. Relatively prolonged dysfunction of the peripheral nerve as well as disturbance of the circadian rhythm of spontaneous activity were observed.

Animals↗
PubMed1980

Tonsillectomy and autoantibodies in patients with habitual tonsillitis.

Tonsillectomy is virtually a routine operation now for ENT surgeons, but its immunological evaluation is still obscure. We have carried out an investigation in 57 patients who visited our clinic, with reference to autoantibodies by the immunofluorescence technique. We found autoantibodies at a higher frequency after tonsillectomy than before tonsillectomy in the young age group. There are studies that report close correlation of autoantibodies and malignancy. Since there are few reports that mention the relationship of the presence of autoantibodies and tonsillectomy, we have emphasized here careful follow-up of the patients from this standpoint.

Adolescent↗
PubMed1980

Prostaglandin analogues possessing antinidatory effects. 1. Modification of the omega chain.

Novel prostaglandin analogues modified in the omega chain were prepared by the reaction of the vinyl aldehydes 1a--e with a variety of organometallic reagents as a key step of the syntheses. Compared with the natural prostaglandin F2 alpha in antinidatory effect, the analogues 4, 7, and 10 were 40 times more potent and the analogue 11 was 50--100 times more potent in the rat.

Abortifacient Agents, Nonsteroidal↗