著者

中谷 昭 岡崎 政博 坂田 進

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.50, no.2, pp.39-43, 2001-10-15

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The purpose of this study was to determine the effect of high fat diet with different percent calories as fat on serum leptin level in rats. Male Wistar rats, 4 weeks old, were assigned to regular chow (12% calories as fat), a 40% high fat diet or a 60% high fat diet group. They ate each diet ad libitum for 5 weeks. Food intake per day was the highest in chow fed group and the lowest in 60% high fat fed group. Although epididymal fat pad weight, plasma triglycende, free fatty acid and total cholesterol in both high fat diet groups were significantly higher than in the chow fed group, there was no difference in body weight among the three diet groups. Serum leptin in the 40% fat and the 60% fat diet were higher than in the chow fed group ( ~136% and ~140%, respectively). Serum leptin was strongly correlated with epididymal adipose tissue weight (r=0.83, P<0.001). These results suggest that a high fat diet increases serum leptin level, and that increased leptin level might inhibit food intake and control body weight.

著者

北村 陽英 鯰 裕美 木村 洋子

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.53, no.2, pp.51-60, 2004-10-29

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Using a questionnaire which asseses premenstrual syndrome and dysmenorrhea symptoms, we investigated 392 senior high school female students in June and July, 2002. Sixty-eight percent of these students were suffering from premenstrual syndrome, and eighty-three percent of these students were suffering from dysmenorrhea symptoms. Comparing symptoms of premenstrual syndrome with dysmenorrhea, there are a lot of somatic symptoms in both conditions, but premenstrual syndrome has more symptoms of swelling and breast pain than dysmenorrhea. Symptomatically, it is recognized that symptoms of premenstrual syndrome are different from symptoms of dysmenorrhea. In daily and school life, thirty-three percent of those students were disturbed by premenstrual syndrome. This study proposes that it is necessary to teach students not only about dysmenorrhea but also about premenstrual syndrome in school health education and mental health counseling classes.

著者

和田 穣隆 荒木 美穂

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.46, no.2, pp.1-15, 1997-11

被引用文献数

3

著者

青木 智史 小島 和人 金原 正明

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.62, no.2, pp.1-7, 2013-11-30

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In the present paper, the authors report the results of thermoluminescence (TL) dating of the bricks from a modern structure, and discuss the validity of this method. TL method is a typical and well-used tool for estimating the age of heated relics. In this research, TL dating method applied to the bricks of the brickwork foundation of an officer' s mess hall which were excavated at the site of the 53th Infantry Regiment on the campus of Nara University of Education. In 1909, the 53 Infantry Regiment was located in the site, where the campus of Nara University of Education is now located. The Infantry Regiment site was first discovered in 2008. This site was excavated continuously between 2008 and 2011. And, the samples were collected at the Infantry Regiment site in 2011. The samples were measured according to the protocol of multiple aliquot additive dose. The TL age averaged for all samples is 96±10 years before present. Thus the results of the present work indicate that the bricks were burnt in the period around the early 20th century. The results are consistent with the ages shown from the archaeological aspects of view. The TL dating method was successfully applied to the modern burnt bricks. And the above result suggest that TL dating method is a valid technique for the research on the history of modern times.

著者

東村 隆子

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.38, no.2, pp.7-20, 1989-11-25

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lt was investigated in two species of dandelion. Taraxacum japonicum and T. officinale, how the elongatoin of scapes (flowering stalks) was correlated with the growth of fruits, seeds and embryos. The effect of some growth substances on the elongation of scapes was also studied by measuring the growth rate of excised segments in the solutions including various combinations of those substances. 1) The elongation of scapes shows a double-sigmoid curve and is somewhat different between two species. The early rapid elongation of scapes continues until the end of the flowering stage in T. japonicum, while it stops one day after flowering in T. officinale. The later rapid elongation starts just at begining of the ascending stage in the former species but during the prostrating stage in the latter. 2) The elongation of scapes is apparently correlated with the growth of embryos; the elongation of scapes is suspended during the rapid growth of embryos and recovered at the stage when the embryo reaches approximately 80% of full size (length). 3) The fruits grow in accordance with the enlargement of embryos in T. japonicum, while they grow almost to full size before the embryo begings a rapid growth in T. officinale. This seems to be correlated with the difference of reproduction; usual sexual reproduction in the former and asexual reproduction (apomixis) in the latter. 4) The solution including only auxin or gibberellin promotes the elongation of excised segmerits of the scapes in the budding and prostrating stages, while the solution including both auxin and gibberellin does in the later stage of flowering, This suggests the elongation is affected by the physiological age (length) of epidermal cells of scapes as well as by the amount of internal auxin.

著者

鳥居 春己

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.59, no.2, pp.15-19, 2010-11-30

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Reproductive traits of the Japanese hare, Lepus brachyurus, were investigated with 196 hares killed either by hunting, pest control or traffic accidents in Shizuoka Prefecture from 1984 to 1993. Average weight of testis started increasing from November, and reached the peak on March, then declined gradually from March to October, and the spermatogenesis ceased both September and October. Although the average weight of ovaries showed similar changes, the change started one month later than the testis. Detectable embryo were found in the samples from February to October. Assuming that breeding season was from first copulation to the last parturition, determined by the age of leverets captured in the wild, in which the whole ages were estimated by the body weight, the duration of the breeding season could be estimated to be 276 days. Embryo size ranged from single to triplets with an average of 1.6 ±0.7. Calculated average annual reproductive potential was 10.1 young per female.

著者

中谷 昭

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.40, no.2, pp.29-34, 1991-11-25

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Myoglobin content (Mb) and enzyme activity in murine skeletal and cardiac muscles were determined. Mb in the red part of m. vastus lateralis and m. gastrocnemius was about 30 times that in the white part. Hexokinase (HK) and citrate synthase (CS) activity in the red parts was about 2.8 and 3.5 times respectively as great as those in the white parts. Mb and the enzyme activity of m. soleus were similar to those in the red parts of the two muscles. Cardiac muscle had the highest Mb and enzyme activity. There was significant correlation between Mb and HK activity (r=0.912, n=60) and between Mb and CS activity (r=0.856, n=60). The results indicate that the red part, with higher Mb, has higher oxidative capacity than the white part in the same muscle.

著者

市川 米太 長友 恒人

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.23, no.2, pp.3-13, 1974-11

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In an earlier paper of this bulletin, the authors described how the thermoluminescent (TL) method may be an effective one for the dating of ancient pottery and it has an advantage over radiocarbon method. The present paper is concerned with some salient points in the development of the TL technique at our laboratory during the past 10 years. The results recently obtained from the typical potteries are shown, which contain the dating results for a series of shards from Ban-Chiang and those for a series of shards from Nara. The quartz and feldspar embedded in clay matrix have been exposed by the natural radiation since the last heating. The TL emitted from the ancient pottery is a measure of the total dose of this radiation. On the assumption that the natural dose-rate has been constant, the time elapsed since the firing of the pottery is estimated from the accumulated radiation dose and the dose per year. The TL dating used in the present investigation is the method which is known by the name of the inclusion method or the large grain method. For the estimation of the accumulated radiation dose we measured the TL of qualtz and feldspar inclusions with diameters of greater than 0.3 mm. Consequently, we could neglect the contribution from alpha particles which will only penetrate into the inclusions approximately 0.023 mm on average and are typically only from 10 to 20 % as efficient as beta or gamma radiation in the creation of TL. The environmental radiation and the radiation from the pottery itself were measured with CaSO4; Tm TL dosimeter developed by Matsushita Electric Ind. Co., Ltd.

著者

北村 陽英 加藤 綾子

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.56, no.2, pp.21-28, 2007-10-31

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Among the cases under guidance for social withdrawal by the public health centers, 45% are said to have a history of past school non-attendance, and 31%, an academic standing of high school dropout. These figures imply the existence of many subjects with a history of extended non-attendance in high school, subsequent transfer or dropping out, culminating in eventual social withdrawal. To determine the process such students follow leading to social withdrawal, 116 cases of school non-attendance or dropouts with tendencies of social withdrawal among 17,211 high school students in 2004 were followed through reports from the‘yogo' or school healthcare teachers starting from when such students were attending school through August 2005. School non-attendance had been noted before entering high school in 20%, during the 1st year of high school in 51%, and the 2nd year of high school in 19%. Transfers and dropping out were most prominent in the 1st and 2nd years of high school, with the number of cases of school non-attendance, transfers, and dropouts falling in the 3rd (final) year of high school. This was taken to indicate that most such students appeared to have dropped or transferred out in the first two years of high school, with few remaining in school into the 3rd year. Interpersonal relationships were cited as the reason for school non-attendance by many, followed by familial circumstances of absence of caregivers in 33%, and excessive pressure from family in 21%. Diagnoses were established in only seven cases, but eating disorder, depression, and wrist cutting being noted at relatively high frequencies. In the first five months of 2005, 31% had dropped out, 21% had transferred, 22% were under treatment, 23% appeared to be heading toward recovery, and 4% had become fully reinstated in school. Although the course of students following transfer is unknown, given that the dropouts had for most part been non-attendant students in high school with a tendency of withdrawal, the course and prognosis of high school non-attendant students tending towards withdrawal cannot be considered good. Among the various types of school non-attendance, the apathetic non-attendance type is believed to be at high risk of non-attendance in high school, leading on to dropping out, and subsequent withdrawal from society and holing up within the home.

著者

若吉 浩二 高橋 豪仁 今枝 和与 岸田 珸 長谷川 芳彦 石川 元美 田辺 正友

出版者

奈良教育大学

雑誌

奈良教育大学紀要. 自然科学 (ISSN:05472407)

巻号頁・発行日

vol.54, no.2, pp.39-47, 2005-10-31

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The purpose of this study was to investigate the changes in physical fitness and exercise habits of elementary school children over two years, and to compare the physical fitness and exercise habits of children who had not participated in the sports class with those of children who had. In addition, this study aimed to obtain basic data to make a physical fitness program to be held over the long term. A total of 622 children, from the 1st to the 6th grade, participated in the physical fitness test. 102 children had participated in a sports class held twelve times and for approximately 18 hours in total over twelve weeks. The physical fitness of the children in this study was lower than the average for Japanese children. However, the improvement rate of the scores in the physical fitness test over two years was higher than that of the average for Japanese children. In the comparison of the children who had not participated in the sports class with the children who had, there was no significant difference in the results of the physical fitness tests. When the results about the child's physical fitness were fed back to parents to investigate the parents' attitude, approximately 95% of parents answered, "I am interested in my child's physical fitness and exercise habits". However, there was a tendency for parents of children in the upper grades not to be interested in their child's physical fitness and exercise habits in comparison with parents of children in the lower grades, even though the physical fitness of the children in the upper grades in this study was remarkably lower than the average for Japanese children. Therefore, it is thought that it is necessary for the physical fitness test and the sports class to continue to be held over a long period of time so that daily exercise and sports may influence the improvement of physical fitness.