• 한국초지조사료학회지
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• 제27권3호
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• pp.209-218
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• 2007

본 실험은 파종시기 및 경운횟수가 옥수수의 생육특성, 건물수량, 영양수량 및 사일리지 기호성에 미치는 영향을 구명하기 위하여 파종시기 및 경운횟수를 통한 5처리(C : 파종 5월 5일, 경운회수 1회, 인력제초 1회, T1 ; 파종 5월 12일, 경운회수 2회, T2 : 파종 5월 19일, 경운회수 3회, T3 : 파종 5월 21일, 경운회수 4회, T4 : 파종 6월 2일 경운회수 5회) 3반복으로 2006년 5월부터 2006년 10월까지 상주대학교 부속 실습농장내 사료포장에서 실시하였으며, 그 결과를 하면 다음과 같다. 초장과 착수고는 C > T1 > T2 > T3 > T4구순으로 높게 나타났지만 초장에서는 유의적인 차이가 없었으며 착수고에서는 처리구간 유의적인 차이를 보였다(p<0.05). 엽장은 T2가 96.0cm로 가장 길게 나타났지만 처리구간 유의적인 차이는 나타나지 않았다. 엽폭은 C와 T3구가 (11.2cm), 고사엽은 C 및 T1구가 각각 4.6엽으로 가장 높게 나타났다. 경의 굵기에 있어서는 T3구가 31mm로 가장 높았던 반면 T2구가 25mm로 가장 가늘게 나타났다(p<0.05). 암이삭 둘레는 C(17.1 cm) > T1(15.6 cm) > T4(15.4 cm) > T3(15.3 cm) > T2(15.2cm) 순으로 높게 나타났으며(p<0.05), 암이삭 충실도는 C구가 8.8로서 가장 높았던 반면 T4구가 6.0으로서 가장 낮게 나타났다 (P<0.05). 경의 경도와 알곡 경도는 파종시기가 빠른 순 인 C > T1 > T2 > T3 > T4순으로 나타났다(p<0.05). 그리고 경의 당도는 T1구가 6.1%로 가장 높고, T2구가 3.0%로 가장 낮게 나타났다(p< 0.05). 잡초 발생량은 C구가 500 kg/ha으로 가장 적게 T1구가 44,100 kg/ha로서 가장 높게 나타났으며 (P<0.05), 잡초의 피복도는 T1 > T2 > T3 > T4 > C구순으로 높게 나타났다(p<0.05). 생초수량은 C구가 73,550 kg/ha로서 가장 높았던 반면 T4구가 65,500 kg/ha로서 가장 낮은 수확량을 보였다(p<0.05). 건물수량에 있어서는 C(26,978 kg/ha) > T1(26,130 kg/ha) > T2(20,255 kg/ha) > T3(20,255 kg/ha) > T4(17,508 kg/ha)구 순으로 높게 나타났다(P<0.05). 조단백질 함량은 T1 > T4 > T2 > T3 > C구순으로 높았으며(p<0.05), 조지방은 C > T1 > T2 > T3 > T4구순으로 높았다. 상대기호성은 Holstein, 염소 및 꽃사슴에서는 C구가 가장 높은 기호성을 보였으나 한우에서는 T1구가 가장 높게 나타났다.

• 대한가정학회지
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• 제39권5호
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• pp.39-47
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• 2001

The purpose of this study was to investigate two different kinds of t-shirts on thermal responses at air temperature of $23{\pm}2^{\circ}C$, relative humidity of $70{\pm}5%$ and wind velocity not more than 0.5 m/sec. Five healthy men wearing boxy type t-shirts or fitted type t-shirts, participated as the subjects. Rectal temperature, skin temperatures, heart rate, clothing microclimate and subjective sensation were measured every 2 minute during experiment(rest, walking, recovery each 20 min.) and compared between two experimental garments(boxy type and fitted type t-shirts). Rectal temperature was lower in recovery phase at wearing fitted type t-shirts. Chest skin temperature was higher at wearing fitted type t-shirts and thigh and leg skin temperature were higher at wearing boxy type t-shirts.

• Food Science and Biotechnology
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• 제18권6호
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• pp.1500-1504
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• 2009

Effects of methanol extract from turmeric (Curcuma longa L.) (CME) on underlying mechanisms of lipolysis were investigated in 3T3-L1 adipocytes. Compared to the control, lipid accumulation with 72 hr treatment of CME at the concentration $20\;{\mu}g/mL$ was significantly decreased by 19.9% as quantified by Oil red O dye. Intracellular triglyceride (TG) content was also lowered by 19.3%. To determine the mechanism for TG content reduction, glycerol release level was measured. Incubation of 3T3-L1 adipocytes with 15 and $20\;{\mu}g/mL$ of CME significantly elevated the level of free glycerol released into the cultured medium by 20.4 and 28.6%, respectively. In subsequent measurements using quantitative real-time polymerase chain reaction (PCR), mRNA levels of hormone-sensitive lipase (HSL) and adipose triglyceride lipase (ATGL) were significantly increased by 21.2 and 24.9%, respectively, at the concentration $20\;{\mu}g/mL$. Results indicated that CME stimulated lipolysis through induction of HSL and ATGL mRNA expressions, resulting in increased glycerol release.

• Bulletin of the Korean Chemical Society
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• 제20권4호
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• pp.445-450
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• 1999

Molecular dynamics (MD) simulation of non-rigid H-Y zeolite framework are performed at 298.15 and 5.0 K. Usual bond stretching, bond angle bending, torsional rotational, and non-bonded Lennard-Jones and electrostatic interactions are considered as intraframework interaction potentials. Calculated atomic parameters are in good agreement with the experiment, which indicates the successful reproduction of the framework structure and its motion. Both calculated bond lengths and bond angles are also in good agreement with the experiment except generally for a little longer bond lengths and a little smaller T-O-H bond angles. The calculated overall site occupation of HI keeps the order O(2) > O(3) > O(4) > O(t) at 298.15 K, which is very different from the experimental prediction, O(l) > O(3) > O(2) at 5 K. Calculated IR spectra of the H-Y zeolite framework show that most of the main peaks of the O-H bonds are in the broad region 3700-5000 cm-1 and that the O-T stretching bands appeared in 0-2000 cm-1 and at 2700 cm-1

• 한국초지조사료학회지
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• 제17권4호
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• pp.387-398
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• 1997

This experiment was to investigate the surface coverage, sward height and dry matter yield of 63 perennial ryegrass cultivars with control cultivar, orchardgrass(Potomac) at different cutting dates(May 25, July 5, August 20 and October 5), in order to select the adaptable cultivars of perennial ryegrass in the middle region of Korea. Four perennial ryegrass cultivars, E.V. Meadea, Aberystwyth S101, Raidor and Real, didn't survive afler sowing. Surface coverage of perennial ryegrass cultivars cut in August 20 was lower than others. Sward height of perennial ryegrass cultivars at each cutting dates was lower than that of orchardgrass. There were no significant differences in sward heights of each cutting date. Dry matter yield of perennial ryegrass cultivars cut in August 20 was lower than others. Total dry matter yield of Oakpark 6% Viktoria, Petra, G. Manawa, and Kangaroo Valley was fell in the range of 11.76 and 10.37t/ha while that of orchardgrass was 12.09t/ha. On the basis of total annual dry matter yield, the adaptability of perennial ryegrass cultivars was classfied as following.

• JSTS:Journal of Semiconductor Technology and Science
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• 제11권1호
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• pp.65-72
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• 2011

In this paper, the T-shape stepped impedance resonators are adopted for the design of microstrip bandpass filters for wide harmonics suppression. The proposed filters are operated at the center frequency of 2.44 GHz and 5.20 GHz, respectively. These bandpass filters have been also applied for a high performance diplexer. The insertion losses at the center frequencies of 2.44 and 5.20 GHz are 1.23 and 1.18, respectively. The applicable return losses for both frequency bands and a wide stopband better than 17 dB up to 20 GHz have been obtained.

• 패션비즈니스
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• 제25권4호
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• pp.1-13
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• 2021

As interest in skin care increases, this study aims to contribute to the development of the beauty self-care market by providing basic data through the measurement of the oil and moisture skin condition of women in their 20s and 30s. The study was conducted from November 27, 2020 to January 31, 2021, with 20 women in their 20s and 30s divided into 4 groups, A~D, by age, 5 per group. Skin measurements were taken four times at 4 hour intervals at 0H, 4H, 8H, and 12H based on the first measurement that was taken within 30 minutes after waking up, and the oil and moisture indices were observed over time. As a result, both T and U zones showed significant differences in moisture levels over time, with no difference between groups for both T and U zones. Moisture decreased the most between 0H to 4H, and moisture changed the least between 4H to 8H. Changes in moisture increased the similar at 0H and 12H. The oil condition changed more irregularly compared to moisture over time, but all groups showed lower oil content in the U-zone compared to the T-zone. Overall, the facial oil and moisture conditions of women in their 20s and 30s changed over time, indicating that the skin changes in real time. The fact that the skin data, which was measured in the primary activity living environment, can be used as basic research data in the beauty self-care market is meaningful.

• 한국융합학회논문지
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• 제11권6호
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• pp.411-422
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• 2020

목적: 본 연구의 목적은 성인과 노인의 외상성 급성 경막하 혈종 예후를 비교하여 연령에 따른 적절한 간호를 제공하는 것이다. 방법: 광주광역시 C대학병원에서 239명 환자(성인 104, 노인 135)를 가지고 후향적 의무기록조사연구를 수행하였다. 데이터 분석에는 χ² test, independent sample t-test, one-way ANOVA를 이용하였다. 결과: 성인군과 노인군간에 퇴원 시 GCS (t=-0.03, p=.978)와 퇴원 시 GOS (t=0.17, p=.863)는 차이가 없었지만 성별(χ²=4.19, p=.041), 과거력(χ²=20.78, p<.001), 음주력(χ²=20.12, p<.001), 입원 시 GCS(t=-2.22, p=.028), 입원 시 동공반사(t=8.04, p=.005), pH(t=-3.30, p=.001), 혈청 혈당(t=-0.85, p=.040), 합병증(χ² =6.450, p=.011)에서는 차이가 있었다. 결론: 외상성 경막하 혈종이 있는 환자를 간호할 때 연령에 따른 임상적 특성을 고려한 환자 사정과 간호제공을 할 수 있을 것으로 생각된다. 추후 연구는 의료진을 위한 교육자료 개발이 필요하다.

• 마이크로전자및패키징학회지
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• 제29권2호
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• pp.91-97
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• 2022

본 연구에서는 솔더 분말 크기에 따른 솔더페이스트의 젖음성 및 레올로지 특성을 평가하였다. 솔더페이스트는 T4 (20~28 ㎛), T5 (15~25 ㎛), T6 (5~15 ㎛) 3종류의 Sn-Ag-Cu 합금 분말을 사용하였고, 플럭스와 진공에서 혼합하여 솔더페이스트를 제조하였다. 스파이럴 점도계로 10 rpm의 속도로 측정했을 때 T4, T5, T6 솔더페이스트의 점도는 각각 155, 263, 418 Pa·s의 점도를 보이며, 분말크기가 감소함에 따라 점도는 증가되는 것이 관찰되었다. 또한, 솔더페이스트의 경시변화에 따른 점도변화를 관찰하였으며, 7일 후 T4 솔더페이스트의 경우 점도가 2.6% 증가하여 거의 변화가 없었으나, T5는 20.6%의 증가를 보였으며, T6의 경우 점도 증가가 매우 높아 스파이럴 점도계로는 측정이 불가하였다. 분말 크기에 따른 솔더페이스트 점도 특성은 솔더의 인쇄성에 큰 영향을 주었다. T4 솔더페이스트의 경우 인쇄특성 및 슬럼프와 브릿징 특성이 우수하였지만, 분말 크기가 작은 T5의 경우 인쇄성이 다소 떨어졌으며, T6의 경우 점도가 높아 솔더페이스트가 마스크 개구홀의 벽에 붙고, 따라서 인쇄성이 매우 떨어지는 모습을 보였다. 솔더링을 진행할 경우, T6 솔더페이스트는 디웨팅(dewetting)이 발생하여 젖음성도 T4, T5에 비해 낮은 것이 관찰되었다.

• 한국동물번식학회:학술대회논문집
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• 한국동물번식학회 2001년도 발생공학 국제심포지움 및 학술대회 발표자료집
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• pp.57-57
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• 2001

This study was carried out to investigate the general characteristics such as volume, sperm concentration, sperm motility, sperm abnormality on whole semen, RSP-S and RSP-T semen and fractional semen of small size dogs, and the effect of temperature and preservation time and cryoproservation on motility of whole and RSP-S and RSP- T semen. Multiple ejaculates were collected from small dogs by the digital manipulation of penis. 1. The volume per ejaculate semen, sperm of concentration and motility and abnormal sperm rate of 1st fractional semen were 0.65±0.09㎖, 4.52±0.35×10/sup 6/ cells/㎖, 15.64±3.85% and 5.50±0.62%. Also, 2nd fractional semen were 1.25±0.20㎖, 3.35±0.48×10/sup 6/cells/㎖, 96.25±4.65% and 4.24±0.46%. And 3rd fractional semen were 1.45±0.21㎖, 3.85±0.52×10/sup 6/cell/㎖, 92.82±4.24% and 4.66±0.58%, respectively. 2. The sperm of concentration and motility and abnormal sperm rates of whole, RSP-S and RSP-T semen were 5.45±0.82×10/sup 6/ cells/㎖, 95.55±4.65%, 4.58±0.45% and 4.82±0.36×10/sup 6/cells/㎖, 90.10±3.42%, 6.48±0.68% and 4.55±0.45× 10/sup 6/cells/㎖, 93.25±3.85%, 4.82±0.58%, respectively. 3. The motility of whole, RSP-S and RSP-T semen were higher at 4℃ than at 38℃. When preservation temperature was at 4℃, survival rates of RSP-S and RSP-T sperm were 97.54%-6.25% at 1-72 hrs, 97.40%-5.62% at 1-100 hrs, respectively. 4. The survival rates of slow and rapid frozen 2nd fraction, RSP-S and RSP-T semen were 67.3±4.45%, 88.8±4.46% and 46.4±3.84%, 74.4±4.20%, respectively. Survival rates was significantly higher in frozen RSP-S and RSP-T semen than that in control group(8.5±2.12%).