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- 저자 : Tetsuo Koyama (검색결과 4 건)
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Tetsuo Gotoh,Masao Koyama,Yuko Hagino,Kentaro Doke 한국응용곤충학회 2011 Journal of Asia-Pacific Entomology Vol.14 No.2
This study focuses on three factors that affect the survival of the lilac pyralid, Palpita nigropunctalis (Lepidoptera:Crambidae): (1) the effect of leaf toughness on survival rate to clarify the availability of leaves as food, (2) the effect of temperature on immature development to determine the lower thermal threshold, and (3) the effect of temperature on head capsule width to clarify whether head capsule width can be used to discriminate among field-collected larval instars. Larvae could develop on Osmanthus fragrans var. aurantiacus leaves collected in April, but not on leaves collected in June or September which were too tough to eat. More than 80% of the larvae on the leaves of Ligustrum lucidum, Ligustrum japonicum, Ligustrum obtusifolium and Syringa vulgaris completed development, regardless of the collection time. P. nigropunctalis completed development on L. lucidum at temperatures from 15 to 27.5 °C with a photoperiod of either 15 L:9D or 16 L:8D,but not at 30 °C, at which temperature no eggs hatched. The lower thermal threshold and thermal constant for total development from egg to adult were estimated at about 7 °C and 450–460 degree-days. Most of the larvae were 5-instar type larvae (passed through 5 instars) regardless of the temperature, but a few 6-instar type larvae (4 of 355) were noted at temperatures of 22.5 °C and higher. No overlap of the ranges of head capsule widths was detected for the 5-instar type larvae, indicating that head capsule width can be used to discriminate among field-collected larval instars.
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Magnetization Curves of TbZn2 in High Magnetic Fields
Yoshiya Adachi,Tetsuo Kitai,Keiichi Koyama,Hajime Yoshida,Takejiro Kaneko 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The magnetization of a single-crystalline sample of TbZn2 was measured under high magneticfields up to 180 kOe in the temperature range from 4.2 to 90 K. The metamagnetic transitionswere observed in the directions of all axes at temperatures below TN and along the c-axis attemperatures above TN. The metamagnetic transition field HM along the c-axis at temperaturesabove TN increases with increasing temperature.
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Jun Saito,Tetsuo Koyama,Kazuhisa Domen 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.5
Objective To outline the association between the National Institutes of Health Stroke Scale (NIHSS) in the acute stage and the Functional Independence Measure (FIM) of motor items several months later. Methods Seventy-nine infarct cases with middle-cerebral-artery region transferred to long-term rehabilitation facilities were analyzed. Patients were allocated to either the model-development group or the confirmatory group at a 2:1 ratio. Independent variables were based on the NIHSS during the acute care and on demographic factors such as age and modified Rankin Scale (mRS) before onset. Multivariate logistic analyses were performed to predict the independence of each FIM motor item. These models were evaluated in the confirmatory group.Results Multivariate logistic analyses in the model-development group (n=53) indicated that at least one NIHSS item was statistically significantly associated with the functional independence of a single FIM motor item. Of the NIHSS items, the affected lower extremity item was the most widely associated with 11 of the FIM motor items, except for eating and shower transfer. The affected upper extremity function was the second widely involved factor associated with 7 of the FIM motor items including eating, grooming, bathing, toileting, bed transfer, toilet transfer, and shower transfer. Age and mRS were also statistically significant contributing factors. The obtained predictive models were assessed in the confirmatory group (n=26); these were successful except for the stairs climb item.Conclusion In combination with age and pre-stroke status, the NIHSS items (especially the affected extremity items) may be useful for the prediction of long-term outcome in terms of activities in daily living.
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Kensaku Uchida,Yuki Uchiyama,Kazuhisa Domen,Tetsuo Koyama 대한재활의학회 2021 Annals of Rehabilitation Medicine Vol.45 No.3
Objective To develop a new prediction model by combining independence in eating and bladder management functions, and to assess its utility in an acute care setting. Methods Patients with ischemic stroke who were admitted in our acute stroke care unit (n=250) were enrolled in this study. Functional Independence Measure (FIM) scores for eating and bladder management on the initial day of rehabilitative treatment (median, 3 days) were collected as predictive variables. These scores were divided into low (<5) and high (≥5) and categorized as values 0 and 1, respectively. From the simple summation of these two-level model values, we derived a three-level model that categorized the scores as values 0, 1, and 2. The FIMmotor scores at discharge (median, 14 days) were collected as outcome measurements. The three-level model was assessed by observing the distribution patterns of the outcome FIM-motor scores and logistic regression analyses. Results The median outcome FIM-motor score was 19 (interquartile range [IQR],13.8–45.3) for the value 0 category (n=14), 66.5 (IQR, 59.5–81.8) for the value 1 category (n=16), and 84 (IQR, 77–89) for the value 2 category (n=95) in the three-level model. Data fitting by logistic regression for FIM-motor scores of 41.3 and 61.4 reached 50% probability of values 1 and 2, respectively. Conclusion Despite the simplicity of the three-level model, it may be useful for predicting outcomes of patients with ischemic stroke in acute care.
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