• Title/Summary/Keyword: T2 Measurement

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Studies on the Cracking of Nitrocellulose Clear Lacquer Coasted Films on Solid Woods of Quercus acutissima and Betula platyphylla var. japonica (상수리나무와 자작나무 소재(素材)에 대한 Nitrocellulose Clear Lacquer 도막(塗膜)의 할열(割裂)에 관(關)한 연구(硏究))

  • Kim, Hyun-Joong;Lee, Phil-Woo
    • Journal of the Korean Wood Science and Technology
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    • v.17 no.1
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    • pp.55-68
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    • 1989
  • This experiment was carried out to investigate the crack of coated Nitrocellulose Lacquer on flatand edge-grained boards of Quercus acutissima, ring-porous wood, and Betula platyphylla var. japonica, diffuse-porous wood, by variations of moisture contents at 7, 13 and 21%. Cold check system was used as an accelerating method for crack development, in which one cycle of the system consisted of 10 replications of each unit cycle, $60^{\circ}C$ for 4hr followdd by $-20^{\circ}C$ for 4hr. The analysis of Nitrocellulose Lacquer characteristics was made by means of water permeation measurement, F.T.I.R. spectroscopy, N.M.R. spectroscopy, gel permeation chromatography, gas chromatography, and D.S.C. The results obtained were as follows: 1. The number of cracks increased with the increasing moisture content of board. 2. The crack of coated film on flat-grained board was fewer in number than on edge-grained board. 3. The crack occurred in Quercus acutissima was more numerous on edge-grained board but less frequent on flat-grained board compared with that in Betula platyphylla var. japonica, respectively. 4. The cold crack vertically developed to the grain both in Quercus acutissima and Betula platyphylla var. japonica. 5. Water permeability in intermediate coated film was lower than in under and top coated film, but the difference was not confirmed between under and top coated film.

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Family Factors and the Moral Development of Young Children (유아의 도덕성 발달과 가족요인들과의 관계에 대한 연구)

  • Hwang, Hye Won
    • Korean Journal of Child Studies
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    • v.24 no.2
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    • pp.35-49
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    • 2003
  • Family factors included in this study of the relation of family environment to the moral development of young children were: socioeconomic status, maternal values, mother's religion and the quality of the home environment. Forty-one 6- to 7-year-old children and their mothers were interviewed and observed in their home settings. Results indicated that the quality of the home environment was positively related to the moral development of children. Mothers who provided a more stimulating home environment had children who received higher scores on the Moral Development Scale. Regression analyses indicated that the quality of the home environment was the most significant predictor of the moral development of young children.

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Thermal Environment Transition of Response Climate Change and Heat Wave Application Evaporative Cooling System (기후변화 및 폭염대응 증발냉각시스템 적용에 따른 내·외부 열환경 변화 연구)

  • Kim, Jeong-Ho;Kim, Hak-Gi;Yoon, Yong-Han;Kwon, Ki-Uk
    • Journal of Environmental Science International
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    • v.25 no.9
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    • pp.1269-1281
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    • 2016
  • This study evaporative cooling system a heat wave climate change and reduction of the inside and outside thermal environment change research. Measurement items included micro meteorological phenomena and measured comfort indices. A micro meteorograph of temperature, relative humidity, surface temperature, and the comfort indices of WBGT, UTCI, and PMV were measured. The difference in inside and outside temperatures were compared for different land types, with the largest difference found in Type A ($4.81^{\circ}C$), followed by Type B ($4.40^{\circ}C$) and Type C ($3.12^{\circ}C$). Relative humidity was about 10.43% higher inside due to water injection by the evaporative cooling system. Surface temperature was inside about $6.60^{\circ}C$ higher than the outside all types. WBGT were Type A ($3.50^{\circ}C$) > Type B ($2.71^{\circ}C$) > Type C ($1.88^{\circ}C$). UTCI was low heat stress inside than outside all types. PMV was analysed Type C for inside predicted percentage of dissatisfied 75%, other types was percentage of dissatisfied 100% by inside and outside. Correlation analysis between land cover type and temperature, surface temperature, pmv, utci. T-test analysed inside and outside temperature difference was significant in all types of land.

THE EFFECT OF CLASP DESIGN ON ABUTMENT TOOTH MOVEMENT FOR DISTAL EXTENSION REMOVABLE PARTIAL DENTURE (유리단 국소의치의 Clasp설계가 지대치 운동에 미치는 영향)

  • Yim, Soon-Ho;Chang, Ik-Tai
    • The Journal of Korean Academy of Prosthodontics
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    • v.25 no.1
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    • pp.17-40
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    • 1987
  • The purpose of this study was to clarify the effect of clasp design on abutment tooth adjacent to a distal extension base under the influence by the location of functional loading. The RPI clasp, the Akers clasp and the combination clasp were selected for evaluation. Tests were performed at 10Kg, 20Kg, 30Kg loads on the buccal, central, lingual, mesial and distal positions of loading platform of each mandibular distal extension partial denture. The laser reflexion method was used for three dimensional measurement of abutment movement, which is possible to measure precisely without contact. The movement in the mesiodistal(X), buccolingual(Y), and occlusoapical(Z) directions and the rotational movement(R) were measured, and in addition, the total movement (SV) as expressed by the three dimensional summation vector independent of direction was calculated. The data were analyzed using Student t-test, p<.05. The following results were obtained from this study; 1. Clasp design did not generally affect the direction of abutment tooth movement except the movement in an undesirable occlusal direction in case of the Akers clasp and the combination clasp. 2. The greater the load on the prosthesis, the greater was the abutment tooth movement, and the direction of abutment tooth movement was affected by positional loading. 3. Each prosthesis was dislodged from the test base under the small amount of load in the distal load position, and the buccal loading showed the greatest abutment tooth movement under the maximum load. 4. RPI clasp was evaluated as the most favorable design.

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Correlation between sagittal condylar guidance angles obtained using radiographic and protrusive occlusal record methods

  • Kwon, Oh-Kyun;Yang, Seung-Won;Kim, Jee-Hwan
    • The Journal of Advanced Prosthodontics
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    • v.9 no.4
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    • pp.302-307
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    • 2017
  • PURPOSE. This study compared the SCGAs measured in three types of radiographic images (panoramic, CBCT panoramic-section, and CBCT cross-section images) with values measured using the protrusive occlusal record. MATERIALS AND METHODS. SCGAs were measured in 20 patients on a semi-adjustable articulator using the protrusive interocclusal record. Panoramic and CBCT images were obtained. SCGAs were measured on CBCT images in panoramic and cross sections. In all of the radiographic images, SCGAs were measured using the Frankfort horizontal reference line and the mean curvature line. The most-superior and most-inferior points of the curvatures were identified to determine the mean curvature line. Each measurement was performed twice by two operators independently. The data were analyzed by the t-test, Pearson's correlation test, and Cronbach's ${\alpha}$ using SPSS (${\alpha}=.05$). RESULTS. The mean right and left SCGAs were as follows: protrusive occlusal record (30.1 and 30.2 degrees, respectively), panoramic (38.9 and 38.7 degrees), CBCT panoramic sections (35.4 and 36.8 degrees), and CBCT cross sections (35.3 and 36.1 degrees). The SCGAs differed significantly among the groups. The Pearson coefficients for the correlations with the protrusive occlusal record measurements on the left and right sides were as follows: panoramic (0.834 and 0.791, respectively), CBCT panoramic-section (0.918 and 0.837), and CBCT cross-section (0.918 and 0.845) images. CONCLUSION. Strong correlations were found between SCGAs obtained using radiographic images and the protrusive occlusal record.

Effects of Dietary Fructooligosaccharide on Digestive Enzyme Activities, Intestinal Microflora and Morphology of Growing Pigs

  • Xu, Z.R.;Zou, X.T.;Hu, C.H.;Xia, M.S.;Zhan, X.A.;Wang, M.Q.
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.12
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    • pp.1784-1789
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    • 2002
  • One hundred and twenty-eight growing barrows (Jiaxing Black${\times}$Duroc${\times}$Landrace) at an average BW of 20.8 kg were allocated to four treatments for 42 days, each of which was replicated four times with eight pigs per replicate and used to investigate the effects of fructooligosaccharide (FOS) on digestive enzyme activities, intestinal microflora and morphology of growing pigs. The pigs received the same basal corn-soybean meal diet and FOS was added to the basal diet at 0, 2, 4, 6 g/kg diet at the expense of corn, respectively. As compared to control, supplementation with 4 and 6 g/kg FOS significantly improved average daily gain and feed efficiency. Addition of FOS enhanced the growth of Bifidobacterium and Lactobacillus, but inhibited Clostridium and Escherichia coli in the small intestinal and proximal colonic contents. Supplementation with 4 and 6 g/kg FOS significantly improved the activities of total protease, trypsin and amylase in the small intestinal contents. However, FOS had no significant effect on the activity of lipase in the small intestinal contents as well as the digestive enzymes in pancreas. Morphological measurement of jejunal mucosa did show response to consumption of FOS. Villus height and the villus height to crypt depth ratio at the jejunal mucosa were significantly higher with 4 and 6 g/kg FOS supplementation as compared to control.

The Pattern Standardization for the Ready Made Korean Traditional Costumes for Men in Twenties (20대 남자 한복 기성복화를 위한 바지.저고리 패턴개발)

  • 홍나영
    • Journal of the Korean Society of Costume
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    • v.47
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    • pp.61-72
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    • 1999
  • For the establishment of ready made Hanbok for the people in their 20's this study aims to develope Bagi-chogori pattern that revives the esthetic quality of the traditional Hanbok as well as comfortably fit the body. Direct method was used in Measuring the 33 parts of men which was selected as items needed for the analysis of the body and the development of patterns. In accordance with the body measurement and the analysis of the result the bust girth and height which has interrelation was chosen as the standard size for the development of pattern. Men's Baji-chogori(Korean traditional Jacket and Pants) which doesn't request fitness for instance we drew out a cross table by giving 5cm intervals each for breast waist hip girth and height. Size system of Baji-chogori was 4 steps. 1st was bust 95cm height 165cm 2nd was bust girth 95cm height 170cm 3rd was bust girth 100cm height 175cm and the 4th was bust girth 105cm height 180cm. In the case of Men the grouping of bodies was attempted by concentrating on the difference of the drop amount(Bust girth to hip girth), However 90% of men in their 20's showed a silhouette of an inverted triangle. Therefore attempt for an additional grouping wasn's Only calculation concerning the ease amount of items such as bust which and length was considered to enhance the silhouette of Hanbok when worn. Men's body for instance have a tendency to change to a rectangular shape as they get older. specially the abdominal girth trend to increase greatly. So study and development of pattern should be made for all age groups.

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Changes in Ovarian and Placental 20α-hydroxysteroid Dehydrogenase Activity during the Pregnancy in the Rat

  • Seong, H.H.;Min, K.S.;Kang, M.H.;Yoon, J.T.;Jin, H.J.;Chung, H.J.;Chang, W.K.;Yun, S.G.;Shiota, Kunio
    • Asian-Australasian Journal of Animal Sciences
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    • v.16 no.3
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    • pp.342-347
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    • 2003
  • The enzyme $20{\alpha}$-hydroxysteroid dehydrogenase ($20{\alpha}$-HSD) catabolizes progesterone to $20{\alpha}$-dihydroprogesterone ($20{\alpha}$-OHP), and is appeared in rat corpora luteal and placenta. A polled samples of 10-15 placental and ovarian tissues collected from each individual rat were subjected to measurement of $20{\alpha}$-HSD activity. A $20{\alpha}$-HSD activity in the cytosol fraction was based on the generation of NADPH. In this study, it is designed to study cytosolic $20{\alpha}$-HSD activity in rat ovarian and placenta during pregnancy, and its relationship to embryonic mortality. It was found that from days 5 to 18 of pregnancy the $20{\alpha}$-HSD activities steady by decreased but at parturition time rapidly increased in ovary. On the other hand, placental cytosolic $20{\alpha}$-HSD activities were high detected from days 8 to 10 of pregnancy, not detectable from days 11 to 20 of pregnancy, but again very high at the time of parturition. Analysis of DEAE column chromatography revealed that two different types of $20{\alpha}$-HSD (HSD-1 and HSD-2) were found with similar activity in the placental cytosol on day 10 of pregnancy. The number of fetuses on day 10 of pregnancy was 15.4 and decreased significantly to 12.9 on day 12. The results suggested that expression of $20{\alpha}$-HSD in the placental tissues seems to be related the number of fetal survived in the specific time (days 11 and 12) which spontaneous fetal loss occurs.

Effects of Surgery Information Service on One-Day Surgery Patients' Anxiety and Satisfaction with Nursing Care (간호정보 제공이 당일수술 환자의 불안과 간호만족도에 미치는 효과)

  • Lim, Yean-Ho;Suh, In-Sun;Chung, Seung-Hee
    • Korean Journal of Adult Nursing
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    • v.22 no.1
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    • pp.1-10
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    • 2010
  • Purpose: The purpose of this study was to determine the effects of surgery information service on one-day surgery patients' anxiety and satisfaction with nursing care. Methods: The study used the nonequivalent control group time difference design. Sampling and measurement of the control group participants (n=30) was completed first. Later, participants in the experimental group (n=30) were sampled, intervened, and measured. The experimental group participants received the surgery information services twice: before and after the surgery, 20~30 minutes for each of the sessions. The anxiety was measured with the State-Trait Anxiety Inventory developed by Spielberger (1975), and modified by Kim & Shin (1978). The patient satisfaction with nursing care was measured with the Patient Satisfaction with Nursing Care Scale developed by La Monica and colleagues (1986), and modified by Shin (1999). The data was collected between February 1 and May 30, 2006. Results: The results were as follows: 1) The level of anxiety in the experimental group was not significantly different from that in the control group. 2) The level of patient satisfaction with nursing care in the experimental group was significantly higher than in the control group (t=-4.53, p=.00). Conclusion: These findings suggested that the one-day vocal cord surgery information service could be a useful nursing intervention to improve patient satisfaction with nursing care, but not for controlling the anxiety of one-day surgery patients.

The Effect of Perceived Risks and Performance regarding Psychic Distance (심리적거리가 지각된 위험과 성과에 미치는 영향)

  • Hwang, Hwa-cheol
    • Journal of Distribution Science
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    • v.7 no.2
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    • pp.63-87
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    • 2009
  • The conclusions shown by this study are as follows: Firstly, Despite the similarity of the objective distance caused by the geographic distance and cultural similarities. it is found that the psychic distance factor still exists. Secondly, a new affective factor of psychic distance has been noted. As to the shaping method, even though culture and psychic distance involve homeogenic factors, psychic distance is more complex in that it is affected not only by cultural changes but also by other affective factors. Culture is a very significant factor, which can have an effect on forming psychic distance, but it is short of being a measurement variable for measuring psychic distance. Thirdly, psychic distance can have a direct effect on customers' buying response. If it is just a belief shared among the people of a nation, it can't become an important notion.

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