• Journal of Oral Medicine and Pain
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• 제35권1호
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• pp.49-59
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• 2010

본 연구는 단기간의 인공소음과 음악 청취에 대한 저작근의 반응을 조사하였다. 연구의 가설은 높은 소음은 작은 소음이나 음악에 비하여 저작근의 경도는 높이고 탄성도는 감소시킨다는 것이다. 15명의 지원자에게 60 dB 과 100 dB 의 소음과 음악을 각각 6분씩 들려주고 청취 전과, 청취 2분후, 4분후, 6분후에 tactile sensor system을 이용하여 교근과 측두근의 경도 및 탄성도를 조사하였다. 첫째날은 100 dB의 소음, 둘째날은 100 dB 의 음악, 셋째날은 60 dB 의 소음, 넷째날은 60 dB 의 음악을 청취한 후 조사하였다. 실험 결과, 60 dB, 100 dB 모두에서 소음과 음악 청취군 간에는 유의성 있는 차이가 대부분 없었으며, 60 dB, 100 dB군간의 비교에서 측두근에서는 유의한 차이가 없었으나 교근의 경우, 음악군에서는 탄성도에서, 소음군에서는 경도에서 유의한 차이를 보여주었다. 이는 소음의 종류에 관계없이 비록 음악이고 단기간의 청취일지라도 큰 소음인 경우에는 저작근의 수축을 야기할 수 있음을 의미한다.

• 한국작물학회지
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• 제28권2호
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• pp.151-163
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• 1983

우리나라의 주요 수도 신품종 및 도입 품종을 공시하여 출수생태에 대한 기초자료를 얻고자 일장을 10, 12, 14 및 16시간의 4수준으로 하여 기본영양생장성과 감광성을 검토하였던 바 그 결과를 요약하면 다음과 같다. 1. 출수일수는 일장이 10, 12, 14 및 16시간으로 길어짐에 따라 지연되었는데 그 정도는 14 및 16시간에서 더욱 뚜렷하였다. 2. 일장에 따른 각 품종의 출수일수를 기초로 하여 일장반응형을 분류하면 7개의 group으로 구분할 수 있었는데, I-IV group은 대부분 일본형 품종이고, V-Ⅶ group은 모두 통일형 품종이었다. 3. 일본형 품종은 기본영양생장성이 짧고 감광성이 예민하였으며 통일형 품종은 기본영양생장성이 길고 감광성이 순한 경향이었다. 4. 일본형의 육성품종과 도입품종간에는 감광성과 기본영양생장성의 유의차는 없었다. 5. 조ㆍ중ㆍ만생종의 기본영양생장성과 감광성의 정도는 조생종의 경우 기본영양생장성 정도에서 일본형이 짧고 통일형은 뚜렷이 길었으며 감광성 정도는 일본형 및 통일형 품종 공히 순한 경향이었다. 한편 중ㆍ만생종의 경우 기본영양생장성 정도는 조생종과 비슷하였으나 감광성 정도는 일본형이 예민하고 통일형 품종이 순하였다. 6. 기본영양생장성과 감광성의 고저에 따른 각 품종들의 출수생태형은 19개 생태형으로 구분되었다. 7. 생태형중 대부부의 일본형 품종은 I-V, I-Ⅵ, II-IV, II-V 및 II-Ⅵ에, 통일형 품종은 Ⅵ-II, IV-III, V-II, V-III, Ⅵ-I, Ⅵ-II 및 Ⅶ-I에 속하였다.

• 한국작물학회지
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• 제64권4호
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• pp.323-335
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• 2019

벼 주요재배 품종의 온도 및 일장에 따른 출수반응을 구명한 내용은 다음과 같다. 1. 온도에 따른 출수반응은 일장 12:00, 평균기온 22℃에서 28℃까지의 범위에서 1℃ 상승에 따라 평균 약 3.5일 정도 단축 되는 것을 확인하였으며, 온도가 상승 할수록 그 차이는 감소하는 경향을 보였다. 또한 온도에 따른 출수까지의 소요일수는 생태형별로 뚜렷한 차이를 보이지 못하였다. 2. 14:30과 12:00의 일장조건에 따른 출수까지의 소요일수 차이는 조생종 9.5일, 중생종 18.3일, 중만생종 23.5일로 온도반응과 달리 생태형간 뚜렷한 반응 차이를 보였으며, 일장조건이 짧아질수록 모든 생태형에서 일장반응에 따른 차이가 감소하는 것을 확인하였다. 3. 벼 주요 재배 품종의 화아분화 시점은 32일이었으며, 각 품종별 한계일장은 조생종인 운광, 오대, 고시히카리, 조평은 각각 19:20, 18:14, 18:58, 17:30이었다. 중생종인 대보, 하이아미, 삼덕은 각각 16:08, 16:15 및 16:55이었고, 중만생종인 새누리, 신동진, 추청, 삼광, 일품, 새일미, 황금누리, 동진찰, 일미, 호품, 영호진미는 각각 15:58, 15:56, 16:36, 16:44, 15:35, 16:26, 15:33, 16:20, 16:29, 16:13, 15:41이었다.

• Clinical and Experimental Reproductive Medicine
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• 제18권2호
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• pp.201-208
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• 1991

Recently the application of gonadotropin-releasing hormone (GnRH) agonist to superovulation in previous poor responders has resulted in the improved outcomes after in vitro fertilization (IVF) outcome. However, poor responders with poor estradiol $(E_2)$ rise or single dominant follicle are a particularly challenging group. Recent reports have also shown that patients with higher basal serum follicle stimulating hormone (FSH) level, result in poorer ovarian response and lower pregnancy rate. Analysis of the differences of superovulation outcomes according to the different protocols of GnRH agonist, long (L, n = 18) and short (S, n = 16) protocols, in patients with high basal FSH levels (>20mIU/ml) were undertaken at Seoul National University Hospital from June to October 1990. The administration of GnRH agonist was begun on day 21 of the cycle in long protocol, and on day 2 in short protocol. Ages of patients and husbands, basal FSH and luteinizing hormone (LH) levels and FSH/LH ratio did not differ significantly. Types and causes of infertility were evenly distributed. Whereas the duration of stimulation and the amounts of gonadotropins administered were significantly reduced in short protocol, the numbers of oocytes retrieved and cleaved, the cleavage rate and the number of embryos transferred were higher in long protocol without statistical signifieance. The pregnancy rate per ET was 16.7% (2/12) in short protocol, and 17.6% (3/17) in long protocol. These data suggest that both protocols result in the similar superovulation outcomes in patients with higher basal serum FSH levels.

• Journal of Photoscience
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• 제9권2호
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• pp.252-254
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• 2002

Djungarian hamsters show distinct seasonal rhythms in several physiological parameters. One of them is daily torpor that occurs in winter with decreased body temperature (about 1O-20$^{\circ}$C) during daytime. Daily torpor is induced by short-day photoperiod, food restriction and castration. But the mechanism to induce daily torpor has not been clarified. In the present study, we tried to clarify the process of daily torpor induction in detail. Adult male hamsters were kept in long photoperiod and high temperature (LP-HT) before the experiment and, thereafter, the animals were transferred to short photoperiod and low temperature (SP-LT), and they were kept in this condition for about six months. The daily rhythms of locomotor activity and body temperature were recorded every three-minutes by using the Minimitter telemetry system. Locomotor activity and body temperature showed very closely synchronized rhythms. All animals under LP-HT showed daily rhythms with higher locomotor activity and body temperature in nighttime than in daytime. Under SP-LT, there were two types of animals with and without showing daily torpor. Thus, they have individual differences in the response to SP -LT.

• 한국육종학회지
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• 제43권6호
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• pp.568-571
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• 2011

'Green Dream' 품종은 국립원예특작과학원에서 2009년도에 육성한 포인세티아 품종이다. 이 품종은 2006년에 진한 녹색잎에 초장이 짧고 아담한 연황색의 'Lemon Snow'를 모본으로, 생육이 왕성하고 진한 분홍색인 'Freedom Rose'를 부본으로 인공 교배하여 양성된 실생계통이다. 2007년과 2008년 2차에 거쳐 특성검정을 하여 '원교 D5-64'를 육성하였고 2009년에 3차 특성검정과 품평회를 실시하여 최종선발 하였으며, 농작물 직무육성 신품종선정위원회를 거쳐 '그린드림 (Green Dream)'으로 명명하였다. 포엽의 형태는 난형이며 포엽의 엽맥 사이에 중간 정도의 주름이 있고 포엽의 색상은 밝고 연한 황록색이다. 잎몸은 난형이며 진한 녹색이고 엽절이 적으며 엽병이 길다. 줄기 색은 녹색계이며 적심을 하지 않은 상태에서도 분지가 발생하고 줄기의 수는 중간이다. 초장은 크며 단일처리 후 약 7주일이 경과하면 완전히 착색되어 출하가 가능하다.

• Journal of Crop Science and Biotechnology
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• 제10권4호
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• pp.243-248
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• 2007

Rice is a facultative short-day plant that flowers in response to reduced day lengths. This study was conducted to identify quantitative trait loci(QTL) for the early heading date(EHD) using H143 line showing extreme EHD compared to other regular cultivars in rice. The japonica H143 was crossed with a japonica cultivar 'Dongjinbyeo' as well as a tongil cultivar 'Milyang23' to measure the inheritance mode of EHD and identify major QTL conferring EHD, respectively. Pooling test revealed that segregation distortion occurred on chromosome 7 and subsequent linkage map was constructed using 10 SSR markers. QTL analysis using Q-gene 3.06 revealed that the EHD trait in H143 was largely controlled by two major QTL, EH7-1 and EH7-2, accounting for more than 40% of genetic variation that were closely related to the previously reported QTL, Hd4 and Hd2, respectively. This result suggests that these two QTL markers may be a useful source for the control of heading date in rice breeding programs.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• 제2권2호
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• pp.109-114
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• 1998

The induction of crassulacean acid metabolism(CAM) characterized by day/night acid fluctuation was investigated in leaves from 10 days exposure to elevated $CO_2$ concentration(1,000 ${\mu}L\;L^{-1}CO_2).$ For Pereskia aculeata, have $C_3-like$ gas exchange pattern in well watered condition and shift into CAM-like in water stress, showed a more typical CAM-like diurnal acid fluctuation. Whereas the massive diurnal fluctuation of acidity in typical CAM of Kalanchoe rosea was declined. The effect of short-term exposure to various concentrations of $CO_2$ on titratable acidity in P. aculeata and K. rosea was also investigated. To investigate the response of various $CO_2$ concentrations, four different $CO_2$ levels(350, 700, 1,000 and 1,500 ${\mu}L\;L^{-1})$ were imposed for 24hr and measured the titratable acidity at 06:00, when the acidity was maximum, and 14:00, when the acidity was minimum. The accumulation of acid in P. aculeata was enhanced markedly by higher concentration of $CO_2,$ while the level of acidity in f rosea did not highly respond to $CO_2.$ A notable difference between P. aculeata and K. rosea was the response of de-acidification to a higher concentration of $CO_2$ Increasing with $CO_2,$ the degree of do-acidification of P. auleata was increased while that of K. rosea was depressed.

• Asian Pacific Journal of Cancer Prevention
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• 제16권15호
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• pp.6595-6597
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• 2015

Objective: To investigate short- and long-term treatment effects and side reactions of lobaplatin plus 5-Fu combined and concurrent radiotherapy in treating patients with inoperable middle-advanced stage esophageal cancer. Methods: Sixty patients with middle-advanced stage esophageal squamous cell cancer were retrospectively analyzed. All patients were administered lobaplatin (50 mg intravenously) for 2 h on day 1, and 5-Fu ($500mg/m^2$) injected intravenously from day 1 to 5 for 1 cycle, in an interval of 21 days for totally 4 cycles. At the same time, late-course accelerated hyperfractionated three-dimensional conformal radiotherapy was performed. Patients were firstly treated with conventional fractionated irradiation (1.8 Gy/d, 5 times/week, a total of 23 treatments, and DT41.4 Gy), and then treated with accelerated hyperfractionated irradiation (1.5 Gy, 2 times/d, a total of 27 Gy in 9 days, an entire course of 6-7 weeks, and DT 68.4Gy). Results: All patients completed treatment, including 10 complete response (CR), 41 partial response (PR), 7 stable disease (SD), and 2 progressive disease (PD). The total effective rate was 85.0% (51/60). Thirty-nine patients had an increased KPS score. One-, 2-, and 3-year survival rates were 85.3%, 57.5%, and 41.7%, respectively. The median survival time was 27 months. The adverse reactions included myelosuppression, which was mainly degree I and II. The occurrence rate of radiation esophagitis was 17.5%. No significant hepatic or renal toxicity was observed. Conclusion: Lobaplatin plus 5-Fu combined with concurrent radiotherapy is safe and effective in treating patients with middle-advanced stage esophageal cancer. However, this result warrants further evaluation by randomized clinical studies.

• Clinical and Experimental Reproductive Medicine
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• 제26권2호
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• pp.163-170
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• 1999

Objectives: The aims of this study are 1) to determine if GAST is a better indicator in predicting ovarian response to COH compared with patient's age or basal FSH level and 2) to evaluate its role in detecting abnormal ovarian response. Design: Prospective study in 118 patients undergoing IVF-ET using GnRH-a short protocol during May-September 1995. Materials and Methods: After blood sampling for basal FSH and estradiol $(E_2)$ on cycle day two, 0.5ml (0.525mg) GnRH agonist ($Suprefact^{(r)}$, Hoechst) was injected subcutaneously. Serum $E_2$ was measured 24 hours later. Initial $E_2$ difference $({\Delta}E_2)$ was defined as the change in $E_2$ on day 3 over the baseline day 2 value. Sixteen patients with ovarian cyst or single ovary or incorrect blood collection time were excluded from the analysis. The patients were divided into three groups by ${\Delta}E_2$; group A (n=30):${\Delta}E_2$<40 pg/ml, group B (n=52): 40 pg/ml${\leq}{\Delta}E_2$<100 pg/ml, group C (n=20): ${\Delta}E_2{\leq}100$ pg/ml. COH was done by GnRH agonist/HMG/hCG and IVF-ET was followed. Ratio of $E_2$ on day of hCG injection over the number of ampules of gonadotropins used ($E_2hCGday$/Amp) was regarded as ovarian responsiveness. Poor ovarian response and overstimulation were defined as $E_2$ hCGday less than 600 pg/ml and greater than 5000 pg/ml, respectively. Results: Mean age $({\pm}SEM)$ in group A, B and C were $33.7{\pm}0.8^*,\;31.5{\pm}0.6\;and\;30.6{\pm}0.5^*$, respectively ($^*$: p<0.05). Mean basal FSH level of group $A(11.1{\pm}1.1mlU/ml)$ was significantly higher than those of $B(7.4{\pm}0.2mIU/ml)$ and C $(6.8{\pm}0.4mIU/ml)$ (p<0.001). Mean $E_2hCGday$ of group A was significantly lower than those of group B or C, i.e., $1402.1{\pm}187.7pg/ml,\;3153.2{\pm}240.0pg/ml,\;4078.8{\pm}306.4pg/ml$ respectively (p<0.0001). The number of ampules of gonadotropins used in group A was significantly greater than those in group B or C: $38.6{\pm}2.3,\;24.2{\pm}1.1\;and\;18.5{\pm}1.0$ (p<0.0001). The number of oocytes retrieved in group A was significantly smaller than those in group B or C: $6.4{\pm}1.1,\;15.5{\pm}1.1\;and\;18.6{\pm}1.6$, respectively (p<0.0001). By stepwise multiple regression, only ${\Delta}E_2$ showed a significant correlation (r=0.68, p<0.0001) with $E_2HCGday$/Amp, while age or basal FSH level were not significant. Likewise, only ${\Delta}E_2$ correlated significantly with the number of oocytes retrieved (r=0.57, p<0.001). All four patients whose COH was canceled due to poor ovarian response belonged to group A only (Fisher's exact test, p<0.01). Whereas none of 30 patients in group A (0%) had overstimulation, 14 patients among 72 patients (19.4%) in group B and C had overstimulation (Fisher's exact test, p<0.01). Conclusions: These data suggest that initial $E_2$ difference after GAST may be a better prognostic indicator of ovarian response to COH than age or basal FSH level. Since initial $E_2$ difference demonstrates significant association with abnormal ovarian response such as poor ovarian response necessitating cycle cancellation or overstimulation, GAST may be helpful in monitoring and consultation of patients during COH in IVF-ET cycle.