48 research outputs found

    On the Second Fundamental Inequality for Holomorphic Curves

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    Relationship between Tender Offer Premium and Target Firm Misvaluation

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    Correlation between star formation activity and electron density of ionized gas at z=2.5

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    In the redshift interval of 2<z<32<z<3, the physical conditions of the inter-stellar medium (ISM) in star-forming galaxies are likely to be different from those in the local Universe because of lower gaseous metallicities, higher gas fractions, and higher star formation activities. In fact, observations suggest that higher electron densities, higher ionization parameters, and harder UV radiation fields are common. In this paper, based on the spectra of Hα\alpha-selected star-forming galaxies at z=2.5z=2.5 taken with Multi-Object Spectrometer for InfraRed Exploration (MOSFIRE) on Keck-1 telescope, we measure electron densities (nen_e) using the oxygen line ratio ( [OII]λλ\lambda\lambda3726,3729), and investigate the relationships between the electron density of ionized gas and other physical properties. As a result, we find that the specific star formation rate (sSFR) and the surface density of SFR (ΣSFR\Sigma_\mathrm{SFR}) are correlated with the electron density at z=2.5z=2.5 for the first time. The ΣSFRne\Sigma_\mathrm{SFR}-n_e relation is likely to be linked to the star formation law in HII regions (where star formation activity is regulated by interstellar pressure). Moreover, we discuss the mode of star formation in those galaxies. The correlation between sSFR and ΣSFR\Sigma_\mathrm{SFR} suggests that highly star-forming galaxies (with high sSFR) tend to be characterized by higher surface densities of star formation (ΣSFR\Sigma_\mathrm{SFR}) and thus higher nen_e values as well.Comment: 7 pages, 1 table, 4 figures, title is changed, accepted to MNRA

    Study of Sex-related Differences in Dynamic Postural Balance Ability Following Single-leg Drop Landing

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    This study aimed to examine sex-related differences in postural balance ability following a single-leg drop landing action. These results will be used as basic data for predicting the onset of anterior cruciate ligament( ACL) injury in male athletes in the future.  The subjects were 109 individuals( 88 male and 21 female), who performed a single-leg drop landing from a platform located at a height of 20 cm. After landing, they assumed a stable posture for 8 seconds. The ground reaction force on landing was measured using a sampling frequency of 1000 Hz. The measured data include the distance travelled by the center of pressure (COP) and the value of the vertical component of the ground reaction force after landing. The distance travelled from 20-msecs to 5 seconds during the movement of the COP was used as the COP locus length. For the vertical component of the ground reaction force, the maximum value and timing of onset of the maximum value were used. In the statistical analysis, the unpaired t test was used for the comparison by sex. For the COP locus length and ground reaction force, the relationship was investigated using the product-moment correlation coefficient.  The results showed that males had significantly higher 20- to 200-msecs COP locus length and maximum ground reaction force values than females. A significant correlation was found between the 20- to 200-ms COP locus length and the vertical component of the ground reaction force. In the future, ACL injuries in male athletes must be examined prospectively, and the risk of onset must be investigated.departmental bulletin pape

    In vitro safety assessments and antimicrobial activities of Lactobacillus rhamnosus strains isolated from a fermented mare's milk

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    application/pdfSafety and probiotic characteristics such as antimicrobial activities of three Lactobacillus rhamnosus strains, FSMM15, FSMM22 and FSMM26, previously isolated as potential probiotics from fermented mare's milk were investigated. The three FSMM strains were susceptible to ampicillin, gentamycin, kanamycin, streptomycin, tetracycline and chloramphenicol, whereas they were resistant to erythromycin (minimal inhibitory concentration (MIC) = 4-8 mu g/mL) and clindamycin (MIC = 4 mu g/mL); bioconversion of bile salts, hemolytic activity and mucin degradation activity were negative; enzymatic activities of -chymotrypsin and -glucosidase were detected, but those of -galactosidase, -glucuronidase and N-acetyl--glucosaminidase, were undetectable. Among the strains, strain FSMM15 was chosen as a safer probiotic candidate due mainly to the lack of plasminogen binding ability. Despite lower acid production of strain FSMM15 than others, its cell-free culture supernatant inhibited growths of Salmonella Typhimurium LT-2, Shigella sonnei, Listeria monocytogenes, and Escherichia coli O157 with comparable levels of ampicillin, suggesting a favorable aspect of strain FSMM15 as a probiotic strain.journal articl

    Measurement of scapular function in university baseball pitchers with shoulder injuries : A retrospective cohort study

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    The purpose of this study was to compare scapular function in university baseball pitchers before injury and to compare such function to uninjured pitchers. A total of 23 pitchers were analyzed in this study. We measured the scapular position in each subject at varying shoulder abduction angles as well as its strength during adduction, abduction, and upper rotation. This study performed such measurements prior to injury. Shoulder or elbow injury occurred in a total of 9 of the 23 pitchers. There was significantly greater movement of the scapula at the middle scapular border during 90° shoulder abduction prior to injury in those pitchers who were eventually injured compared to non-injured pitchers. Moreover, the inferior angle exhibited significantly less movement during 145° shoulder abduction in injured pitchers than in non-injured pitchers. The strength of the scapula differed between the dominant and non-dominant side within each athlete, while the scapula was less strong in non-injured pitchers when the scapula was performing abduction and upper rotation movements. Scapular function differed between injured and non-injured pitchers before injury occurred.departmental bulletin pape
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