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This study was designed to secure the effect of light break on prolonging and forcing of the cut flower. For prolonging of short day plant, two varieties (early variety“Yoshino”and late variety“Edo”) of chrysanthemum were selected. The experimental lots of light break are as follows. (1) Lighted from 8p.m. to 9p.m. (2) from 10 p.m. to 11p.m. (3) from 12p.m. to 1a.m. (4) from 2a.m. to 3a.m. (5) from 4a.m. to 5a.m. (6) from 6a.m. to 7p.m. (7) control.The light break treatment was began on August 15 and was ceased on Oct. 10. Some plants from each lot were dissected to observe floral initiation, and flowering date of each of lot was recorded successively.The inhibiting effect was the most remarkable in the 4th lot. For the late variety“Edo”, in the 4th lot the mean flowering date was Dec. 16, while for control that was Nov. 6.For forcing of long day plants, Aster Savatieri and Shasta daisy were selected. In this case, the experimental lots were as follows. (1) Lighted from evening to 9p.m. and from 3a.m. to morning. (2) Lighted from 11p.m. to 12a.m. (3) Lighted from 1a.m. to 2a.m. (4) Lighted all night and (5) control.For aster the result was not clear, but for Shasta daisy forcing effect was observed in relation to the length of lighted time, being not so distinct by light break.

In the previous papers the auther reported that growth substances may be successfully used for delaying flowering of chrysanthemum. The present study deals with the effects of combined applica-tion of electric light and auxin on delaying flowering and on flower characters. In the light culture of chrysanthemum, the light effect for delaying flowering decreases with an increase in distance from the light source due to the reduction in light intensity. If the auxin supply complements the deficiency of light intensity, then its application would be an advantageous method to save the cost of electric equipment. The variety “December King”, which is popularly cultivated by delaying its flowering for winter sale in Japan was used in this study. “Yellow Boyce”, which is a mid-season autumn variety and is not suitable for delaying was added for compari-son with “December King”. The materials were propagated by cuttings on July 11, planted in 6 inch pots on Aug. 4, and pinched on Aug. 14. Three shoots were selected for every plant. Total materials were divided into three lots each containing 13 pots. In each lot, pots were arranged in a row which extended from under the lamp to 3.2 meters away, and were labelled with no. 1, 2, 3, ……13. These pots were placed in the green-house which was heated with an electric cable after early January. The intensity of illumination from the 80 W Mazda lamp decreased from 60 lux nearest for the lamp to 2 lux at a distance 3.2 meters away. The first lot was applied with 50ppm of NAA, the second lot with 100ppm of NAA, and third lot was control. The auxin was supplied at every three day intervals. The long day (17 hrs.) and auxin treatments were started on Aug. 25 and ended on Oct. 10. At the termination of both treatments slight inhibition of growth of plants of “December King” was seen in the lot with 50ppm of NAA and heavy inhibition in the lot with 100ppm of NAA. However, with “Yellow Boyce” heavy inhibition seen in both of the treated lots. In this variety was the treated plants did not differentiate flower buds and showed the rosette habit after the termina-tion of treatments. Budding date, flowering date, . height of plant, number of leaves and flower size, , etc. were recorded. The experimental results on “December King” are summarized as follows: (1) The budding dates of control plants were delayed according to the position in relation to the light source. In the control, the budding date in the 10th pot was Oct. 12, while in the first pot which was placed nearest for the lamp, it was Nov. 16. With 50ppm of NAA the date of budding was delayed 17 days in the 13th pot, and 5 days in the first pot in comparison with the 13 th and the first pot of control respectively. However, they were delayed at the same rate in all plants applied with 100ppm of NAA. (2) The date of flowering in the treated plants were delayed according to the delay in bud-ding compared with control, however, those of the first pot treated with 50ppm of NAA and control were the same. (3) In the control and 50ppm of NAA lots, it was observed that the earlier the flowering date the shorter is the stem length. After the termina-tion of auxin spray all inhibited plants recovered their growing power and elongated. (4) There is no difference in number of florets among the flowers which opened before the last of December, but the flowers opened after late January had slightly fewer florets. (5) The differences in stem length, flower size, number of florets and number of leaves be-tween the treated lots and control were not' re-markable. From these results, it may be conclud-ed that, the application of auxin for delaying chry-santhemum flowering is practical. However, it is important to select a variaty which grows vigorously.

The relationships between mechanical properties and wear characteristics are described for carbon, SiO/sub 2/ and CoNi-on-Cr thin films. The films are prepared on various rigid substrates in the submicron thickness range by RF magnetron sputtering. Mechanical properties examined include microhardness, Young's modulus and internal stress. Wear resistances are evaluated for thin films sliding against a thin film head Al/sub 2/O/sub 3/-TiC slider. There is no correlation between the microhardness and the wear resistance. However, the load-indentation depth curves provide useful information, since the curve profile varies reflecting the presence of microdefects closely related to wear characteristics. A clear and common relationship holds between Young's modulus and wear resistance which is a maximum at 0.8-0.9 times the modulus. The wear resistance of CoNi films decreases as the tensile stress increases in the Cr substrates. The properties of carbon films depend on their own internal stress; an increase in compression stress leads to deterioration in their wear resistance. >

An NiP conversion overcoat has been developed for plated magnetic disks by thermal oxidation of an NiP film followed by chromate passivation. The overcoat shows high corrosion resistance and good wear resistance. The chromate passivator (chromium trioxide) markedly improves corrosion resistance on the NiP conversion overcoat by passivation of pinholes. The lubricant, composed of perfluoro polyether, improves the wear rate by 1/100 or 1/1000. Contact start/stop durability for more than 100000 cycles has been achieved on the lubricated NiP conversion overcoat. Wear of the overcoat, consisting of NiO-NiP layers, begins with plastic deformation of metal underlayers. The NiO layer itself shows no cracks or delamination. >

In magneto-optical recording using sputtered TbFeCo, it was observed that writing sensitivity appreciably increases after writing/erasing repetitions. To clarify this phenomena, magnetic properties in TbFeCo were evaluated before and after heat treatment below crystallization temperature. It was found that the Kerr rotation, coercive force, and perpendicular magnetic anisotropy decrease after heat treatment. The writing sensitivity increase can be explained by the coercive force decrease after writing/erasing repetitions. To examine the magnetic property change, mechanical and structural properties in TbFeCo were investigated. After heat treatment, Young's modulus decreases and internal stress is drastically reduced to near O. A high resolution image of the as-sputtered TbFeCo cross section reveals that sputtered TbFeCo is comprised of crystal-like micrograins, about 20A in diameter, and amorphous regions. As the causes of property changes, the oxidation and the structural relaxation can be considered. After heat treatment, the compensation composition and the compensation temperature didn't change in the present experiment. Thus the possibility of the oxidation can be ruled out. From the drastic decrease of the internal stress, it is considered that the structural relaxation occurs in amorphous regions after heat treatment.

To determine the relation between H2 receptors and gastric mucosal blood flow, we measured the latter in rats by the electrolytically generated hydrogen gas clearance technique. The blood flow increased significantly after intravenous injection of 0.1 mg/kg of impromidine, a very potent and specific agonist of H2 receptors. On the other hand, gastric mucosal blood flow decreased significantly after intravenous administration of 5 or 20 mg/kg of cimetidine or 2 mg/kg of famotidine. However, 2 or 20 rng/kg of omeprazole, whose anti-secretory effect is as strong as that of H2 blockers such as cimetidine and famotidine, caused no significant change in the gastric rnucosal blood flow. This indicates that H2 receptors regulate gastric mucosal blood flow in rats.

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The pituitary glands of 12 patients, aged 4-20 years, with pituitary dwarfism and of 15 age-matched control patients were evaluated with contrast-enhanced, high-resolution computed tomography (CT). In control patients, CT clearly demonstrated pituitary glands and stalks, 2.5-9.0 mm in height (average, 5.7 mm +/- 1.8). In the 12 patients with pituitary dwarfism, CT did not demonstrate the gland or stalk in four; CT faintly showed only the stalk in another four and showed a small gland (less than 2 mm in height) and a small to normal stalk in the remaining four. Eleven of the 12 patients had a birth history of breech presentation. Possible causes of pituitary dwarfism are discussed.

SYNOPSIS IN INTERLINGUA ACTIVITATE DE SYNTHASE DE CITRATO IN Tissu PERIODONTAL.—Con le utilisation del sensibile e convenibile essayo a fissura per ester thiolic, le activitate de synthase de citrato (EC 4.1.3.7; oxaloacetato-lyase de citrato) esseva determinate in le fractiones supematante de gingiva, osso alveolar, e altere tissus de porco de India. Cortice de femore, osso alveolar, gingiva, hepate, e ren possedeva approximativemente 1/60, 1/33, 1/24, 1/12, e 1/4, respectivemente, le activitate medie per mg de extrahite proteina cardiac. Le activitate exprimite a base de unitates de peso de tissu humide esseva etiam le plus alte pro le corde. Illo de osso alveolar e de gingiva esseva approximativemente 1/440 e 1/40, respectivemente, del correspondente valor trovate pro le corde.

Anorectal manometry, defecography, and ultrasonographic study were performed in 36 children with complete rectal prolapse and 45 age- and sex-matched controls. Anorectal manometry disclosed that there was no significant difference in Pr, Pac, or length of HPZ between patients and controls. The rate of BRC of the smooth muscle of the anal canal and RC were significantly lower in patients. Rectoanal reflex was present in all patients and controls. Defecography and ultrasonographic examination confirmed the hypothesis that rectal prolapse starts initially as an intussusception of the rectum, then fully develops. In 29 cases patients were cured by conservative treatment, but seven patients required surgical treatment. Results of modified Sudeck's operation were, in general, satisfactory.

Six patients with dural arteriovenous malformation (DAVM) in the cavernous sinus were treated by irradiation. The region of the abnormal vascular network was irradiated with a 10 MV linear accelerator; the total dose given ranged from 3,200 to 5,100 cGy (150-200 cGy per day, 750-1,000 cGy per week). All patients responded favorably to the treatment, with three of the six having no residual symptoms or signs of disease. Postradiotherapy angiography confirmed the complete disappearance of the shunts in two of the three patients. No significant side effects were observed during the follow-up period, which ranged from 10 months to four years. Radiotherapy is considered to be a useful treatment method for DAVM, especially for those patients having shunts from the meningeal branches of the internal carotid artery.

Among the lymphograms of 25 F.U.O. patients whose diagnoses were unknown after several weeks of detailed examinations, abnormalities were noted in 4. Of the 4 abnormal cases, 2 were finally diagnosed by superficial lymph nodes biopsies as having malignant lymphomas. The other 2 had no final diagnoses; though biopsies of enlarged superficial lymph nodes were performed, they showed only reactive hyperplasia. No exploratory laporatomy was performed among the 25 cases. We conclude that lymphography is not absolutely indicated in the evaluation of F.U.O.

An 18-year-old man with infective endocarditis caused by Campylobacter fetus is reported. This bacterial species has long been of interest in veterinary medicine, and recently it has been reported to be one cause of infantile diarrhea. Infective endocarditis arising from campylobacter fetus is rare. This is the fourth case reported in Japan. The organism was resistant to several antibiotics, and large vegetations were found to involve the aortic valve. Emergency excision of the infected aortic valve and replacement with a valve prosthesis were successful. Current clinical treatment of infective endocarditis is discussed, and the literature briefly reviewed.

Forty-two acoustic neurinomas and seven meningiomas in the cerebellopontine angle were reviewed, and the radiological differential diagnosis of these tumors is discussed. Though enlarged internal auditory meati and characteristic CT findings were reasonably reliable indicators for the diagnosis of acoustic neurinomas, it was angiography which substantiated their correct diagnosis. An arcuate vein was frequently demonstrated with acoustic neurinomas, but never with meningiomas. Visualization of tangled veins seems to favor a diagnosis of acoustic neurinomas. Contrary to earlier reports, tumor stains were most frequently visualized using selective external carotid arteriography. The degree of tumor stains did not aid in differentiating acoustic neurinomas from meningiomas. The importance of using angiotomography, especially in the anteroposterior projection, and external carotid angiography during prolonged injections of large amounts of contrast media, is emphasized.

A case of herpes zoster ophthalmicus complicated by contralateral hemiplegia and normal pressure hydrocephalus is presented. The hydrocephalus is considered to be caused by recurrent haemorrhage from extensive cerebral arteritis.

Photosystem I fragments were prepared from thylakoid membranes of a blue-green alga (Anabaena variabilis) and spinach by treatment with a detergent, Triton X-100. Equatorial X-ray diffraction patterns were recorded on films for oriented specimens of thylakoid membranes and photosystem I fragments. The thylakoid membranes and photosystem I fragments gave essentially the same equatorial diffraction patterns in both Anabaena variabilis and spinach, indicating that the major X-ray scatterers in these thylakoid membranes are the molecular assembly of photosystem I. The equatorial X-ray diffraction from the photosystem I fragments of Anabaena variabilis and spinach extends to the reciprocal space of 1/7 A-1. The diffraction pattern exhibits six to nine distinct maxima though they are diffuse, indicating that the arrangement of the constituent molecules in photosystem I has a definite geometrical regularity. The radial autocorrelation functions indicate that the maximal sizes of photosystem I in these thylakoid membranes are about 100 A, and the geometrical regularity does not correspond to a crystalline order. The X-ray diffraction patterns from photosystem I fragments from Anabaena variabilis and spinach are quite similar to each other, suggesting the possibility that the molecular structures of photosystem I in Anabaena variabilis and spinach have a fundamental similarity. These diffraction patterns, however, are different from that of the chromatophore obtained from a photosynthetic bacterium, Rhodospirillum rubrum.

Extensive gastric mucosal lesions were observed after i. p. administration of compound 48/80 (0.75 mg/kg) for 3 days to rats. The mucosal hydroxyproline content was significantly increased at 4 h after the last injection of compound 48/80 and subsequently decreased as the lesions were healed. Treatment with cimetidine (50 mg/kg, i. p.) did not prevent compound 48/80-induced gastric lesions. The increase in the mucosal hydroxy-proline content was significantly reduced by treatment with cimetidine. This fact suggested that cimetidine might have an inhibitory effect on the regeneration of connective tissue.