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Effect of Photoperiodic Regimes on Oviposition and Colony Development of the Bumblebee, Bombus ignitus

  • Yoon, Hyung-Joo;Kim, Sam-Eun
    • International Journal of Industrial Entomology and Biomaterials
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    • v.7 no.2
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    • pp.151-154
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    • 2003
  • The effect of photoperiodic regimes on the oviposition and colony development of Bombus ignitus queens was examined with 0L, 8L, and 16L under $27^{\circ}C$ and 65% R. H. Among these photoperiod regimes, the oviposition rate at 8L and 16L was 80.2% and 83.1%, respectively, which was 12-15% higher than that at the dark condition (0L). Duration up to first oviposition at 8L and 16L was 17.5 days and 16.5 days, respectively, which was 2-3 days shorter than that at 0L. The colony foundation rate at 8L and 16L was 9.2% and 10.4%, respectively, which corresponded to 1.7-2.0-fold higher than the value at 0L. In addition, the rate of progeny-queen production at 8L and 16L was also two fold higher than that at 0L. Taken these together, the light conditions (8L and 16L) rather than dark condition (0L) were more suitable for oviposition and colony development for B. ignitus in the indoor rearing condition.

Effects of Duroc Breeding Lines on Carcass Composition and Meat Quality

  • Choi, Jung-Seok;Jin, Sang-Keun;Choi, Yang-Il;Lee, Jae-Joon
    • Food Science of Animal Resources
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    • v.35 no.1
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    • pp.80-85
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    • 2015
  • This study was performed to investigate the carcass composition and pork quality of Duroc breeding lines in Korea. A total of 200 Duroc pigs were used, and those were originated from four different great-grandparent (GGP) breeding stock farms (L1: N farm, L2: W farm, L3: S farm, L4: R farm). The carcasses of pigs from these farms were collected, and meat quality traits were evaluated. L1 and L2 had smaller carcass weights and thin backfat, whereas L3 and L4 had heavy carcass weights and thick backfat. L3 and L4 had higher contents of fat and protein than L1 and L2. For the meat quality characteristics, L1, L2, and L4 had higher pH values than L3. In addition, L4 had higher water holding capacity than the other lines. L4 had the highest sensory evaluation scores with regard to both juiciness and flavor. Consequently, the study results indicate that pork quality information from domestic Duroc breeding stock lines could be used to effectively improve pork quality in Korea.

Quickly Changing Architectural O.D.L and I.D.L for the Aged (노인들을 위하여 급변하는 건축적 O.D.L과 I.D.L)

  • Bahk, Sang Hee;Kim, Heung Gon
    • Journal of the Korean Institute of Rural Architecture
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    • v.3 no.2
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    • pp.13-24
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    • 2001
  • Some companies of domestic construction indicate recently that modern life for the aged prefer an advanced technical alliance between O.D.L and I.D.L systems. It means the quality of housing life of the aged has been raised and changed quickly as well as the O.D.L and I.D.L systems since the last year. These preliminary studies suggest that the aged people in the country suffer from insufficient O.D.L and I.D.L systems caused by nation-wide economic poverty compared with the aged people in Seoul. The information from the country has been restricted for several decades therefore some details of the results of the studies are at times difficult to believe and differ depending on the research methods. The purpose of this study is to clarify the quality housing life of the aged, based on the comparative analysis between the O.D.L and I.D.L systems. The quality of housing life of the aged in countryside has been revealed by the clarification of the conditions housing supply, facilities, and therefore housing the cost amount. The conclusions are as follows ; The quickly changing architectural O.D.L elements are presented below in 17 items, while the I.D.L elements are presented in 18 items.

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Nuclear LS-Energy Matrix Elements with the Harmonic Oscillator Shell Model Wave Functions for the Configurations ($I_1$$I_{1+1}$$I_1$$I_{1+1}$) and Sum Rules (조화 단진동자 파동함수를 쓴 원자핵의 LS에너지 행열요소 합법칙)

  • Chung-hum Kim;Soon-Kwon Nam
    • Nuclear Engineering and Technology
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    • v.14 no.1
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    • pp.22-40
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    • 1982
  • The nuclear LS-energy matrix elements have been calculated with the harmonic oscillator shell model wave functions for the configurations ( $l_{i}$ $l_{i+1}$$l_{i}$ $l_{i+1}$) where 1$_1$= $l_{s}$ , $l_2$=lp, $l_3$=ld, 2s, $l_4$=1f, 2p, $l_{5}$ =1g, 2d, 3s. The resulting matrix elements are expressed in terms of both Talmi integrals $I_1$ and Slater integrals $F^{k}$ . In addition to this various sum rules are derived and applied to check the results of the calculations.ons.

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Interspecific Pollination of Oriental, Martagon and Trumpet Group as Male Parent in Lilium spp. (Oriental, Martgon 및 Trumpet Group을 화분친으로 사용한 백합의 종간수분)

  • Lee, Ji-Yong;Yoon, Eui-Soo;Lim, Yong-Pyo
    • Journal of Plant Biotechnology
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    • v.31 no.2
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    • pp.95-101
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    • 2004
  • This study was undertaken to study the effect of interspecific pollination of L. longiflorum and L. ${\times}$formolongi as the female parent with Oriental, Martagon and Trumpet group as the male parent by cut-style pollination. In the interspecific pollination of L. longiflorum cv. Gelria and Lorina with Oriental group as the male parent, the corresponding fruits obtained immature embryo were 1, 8, and the mean number of embryo per fruit were 11.0, 3.0, respectively. In the interspecific pollination of L. ${\times}$formolongi cv. Raizan, the corresponding fruits obtained immature embryo were 17, and the mean number of embryo per fruit were 4.0. On the other hand, in the interspecific pollination between L. longiflorum and L. ${\times}$formolongi as the female parent and Martagon and Trumpet group as the male parent, the pollination of L. ${\times}$formolongi as the female parent and L. henryi of Trumpet group as the male parent were obtained only 2 fruits, however no embryo.

Identification of Lophodermium Species Associated with Needle-cast Disease of Pines in Korea (한국(韓國) 소나무류(類)에 잎떨림병을 일으키는 Lophodermium 속(屬) 균(菌)의 동정(同定))

  • Lee, Seung Gue;Lee, Kyung Joon;La, Yong Joon;Yang, Seong Il;Yi, Chang Keun
    • Journal of Korean Society of Forest Science
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    • v.78 no.2
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    • pp.218-227
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    • 1989
  • Fallen and living pine needles bearing ascocarps were collected throughout the country from February, 1987 to October, 1988 to identify and describe Lophodermium species associated with Lophodermium needle cast disease of pines in Korea. All of the observed characteristics of given species were compared with published descriptions of the Lophodermium species. As a result of this study, six Lophodermium species were identified and described. L. pinastri was previously recorded while the other five species, i.e., L. australe, L. durzlabrum, L. nitens, L. pini-excelsae and L. pini-pumilae, were unrecorded in Korea. One Lophodermium species has not been fully identified in this study, and tentatively named as L. sp-1. L. australe was observed on the needles of Pinus rigida, P. rigida ${\times}$ taeda and P. taeda, L. pini-excelsae on P. parviflora and P. strobus, L. nitens, L. durilabrum and L. pini-pumilae on P. koraiensis, L. sp-1 on P. thunbergii and L. pinastri on P. densiflora and P. taeda. L. sp-1 was collected from the diseased regions of 2-year-old needles of P. thunbergii and L. durilabrum from P. koraiensis, suggesting pathogenic nature of these fungi.

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A Study on Shoulder Joint ROM of the Elderly (노인의 견관절 가동범위에 관한 연구)

  • Um, Ki-Mai;Yang, Yoon-Kwon
    • Journal of Korean Physical Therapy Science
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    • v.8 no.2
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    • pp.997-1003
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    • 2001
  • The purpose of this study is to know the average of pint range of motion and difference according to the aging for the elderly, This study consisted of elder male(n=75) and elder female(n=l09), The result of assessment and analysis in shoulder pint range of motion are as follows: 1) The average shoulder flexion pint range of motion in 60-69(from sixty to sixty-nine)years old are 163.04(Left-Male), 162.91(Right-Male), 158.74 (Left-Female), 158.74 (Right-Female). 70-79years old are 149.40(L-M), 152.38(R-M), 153,37(L-F), 153.37(R-F). 80-89 years old are 149.57(L-M), 147.93(R-M), 151.17(L-F), 150.33(R-F). There was no significant difference among group, 2) The average shoulder extension pint range of motion in 60-69years old are 48.15(L-M), 47.20(R-M), 45.16(L-F), 44.23(R-F), 70-79years old are 37.l1(L-M), 38.70(R-M), 35.17(L-F), 36.71(R-F), 80-89 years old are 34.46(L-M). 36.71(R-M), 33.90(L-F), 33.09(R-F). There was significant difference among group(p<.05). 3) The average shoulder abduction pint range of motion in 60-69years old are 164.22(L-M), 165.96(R-M), 159.34(L-F), 159.97(R-F), 70-79years old are 152.27(L-M), 155.05(R-M), 152.32(L-F), 53.66(R-F), 80-89 years old are 152.17(L-M), 153.76(R-M), 147.53(L-F), 147.37(R-F). There was significant difference in right shoulder abduction among group(p<05). 4) The average shoulder internal rotation pint range of motion in 60-69years old are 63.52(L-M), 65.70(R-M), 64.16(L-F), 64.61(R-F), 70-79years old are 64.50(L-M), 65.81(R-M) 61.10(L-F), 61.83(R-F). 80-89 years old are 61.60(L-M), 61.66(R-M), 57.53(L-F), 57.53(R-F). There was no significant difference among group. 5) The average shoulder external rotation pint range of motion in 60-69years old are 50.87(L-M), 50.22(R-M), 51.03(L-F), 50.42(R-F), 70-79years old are 50.91(L-M), 50.20(R-M) 48.37(L-F), 50.20(R-F). 80-89 years old are 46.83(L-M), 47.93(R-M), 43.43(L-F), 43.72(R-F).There was significant difference in left shoulder external rotation among group(p<.05).

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Enhancement of Skin Whitening and Anti-wrinkle Activities of the Co-culture of Lactobacillus rhamnosus and Lactobacillus paracasei (Lactobacillus rhamnosus와 Lactobacillus paracasei 복합 배양의 피부 미백 및 주름 개선 활성 증진)

  • Kim, Nam Young;Lee, Hyeon Yong
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.41 no.3
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    • pp.253-261
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    • 2015
  • In this study, cosmeceutical activities of the co-cultures of both lactic acid bacteria isolated from the hands of women, Lactobacillus rhamnosus (L. rhamnosus) and Lactobacillus paracasei (L. paracasei) were first reported: For whitening and anti-wrinkle activities, the co-culture showed the highest tyrosinase inhibition of 20.68%, compared L. paracasei and L. rhamnosus. The co-culture also showed the highest inhibition of melanin synthesis as 63.7%. In observing the anti-wrinkle activities of the co-culture, it generated only 3726.3 pg/mL of matrixmetalloproteinase-1 (MMP-1) production when 13613.5 pg/mL and 13012.0 pg/mL of MMP-1 production were estimated from L. rhamnosus and L. paracasei. Besides these, the extract from the co-culture yielded higher collagen production as 380.7 ng/mL, compared to 323.4 ng/mL and 304.1 ng/mL from L. paracasei and L. rhamnosus. These results indicate that the co-culture of both lactic acid could improve its cosmetic activities. This hypothesis was also confirmed that the co-culture of both bacteria showed strong antioxidant activities of DPPH free radical scavenging while the extract of L. rhamnosus and L. paracasei.

A Level One Cache Organization for Chip-Size Limited Single Processor (칩의 크기가 제한된 단일칩 프로세서를 위한 레벨 1 캐시구조)

  • Ju YoungKwan;Kim Sukil
    • The KIPS Transactions:PartA
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    • v.12A no.2 s.92
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    • pp.127-136
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    • 2005
  • This paper measured a proper ratio of the size of demand fetch cache $L_1$ to that of prefetch cache $L_P$ by imulation when the size of $L_1$ and $L_P$ are constant which organize space-limited level 1 cache of a single microprocessor chip. The analysis of our experiment showed that in the condition of the sum of the size of $L_1$ and $L_P$ are 16 KB, the level 1 cache organization by constituting $L_P$ with 4 KB and employing OBL and FIFO as a prefetch technique and a cache replacement policy respectively resulted in the best performance. Also, this analysis showed that in the condition of the sum of the size of $L_1$ and $L_P$ are over 32 KB, employing dynamic filtering as prefetch technique of $L_P$ are more advantageous and splitting level 1 cache by constituting $L_1$ with 28 KB and $L_P$ with 4 KB in the case of 32 KB of space are available, by constituting $L_1$ with 48 KB and $L_P$ with 16 KB in the case of 64 KB elicited the best performance.

Isolation and Identification of Volatile Compounds from Red Wine Manufactured with Vitis vinifera grapes (Vitis vinifera 적포도주 휘발성분의 분리 및 동정)

  • 이용수;최진상;심기환
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.22 no.2
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    • pp.196-201
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    • 1993
  • In order to investigate some chemical components, higher alcohols, ethyl acetate and volatile compounds of Vitis vinifera red wines were analyzed by HPLC, GC and GC-MS. During the process of ripening for the content of wine and acids were much changed, particurally the content of tartaric acid was decreased largely. Content of total phenolics and phenol flavonoid in wines which manufactured with Malbec varieties as 470mg/L and 245mg/L respectively, was higher than those in Cabernet sauvignon (310mg/L, 135mg/L) and Cabernet franc (425mg/L, 125mg/L) wines, and nonflavonoid was higher in Cabernet franc wine(300mg/L) than in others. Content of acetaldehyde was higher in Malbec wine (33mg/L) than in Cabernet sauvignon (26mg/L) and Cabernet franc (28mg/L) wines. Amount of methyl alcohol, propanol and isoamyl alcohol were higher in Cabernet sauvignon wine than in others, and isobutanol was more in Malbec wine(64mg/L), ethyl acetate was more in Cabernet franc wine as 35mg/L than in Malbec(28mg/L) and in Cabernet sauvignon (23mg/L) wines. Volatile compounds were isolated about 87~91 varieties from concentrates of three red wines by GC, and thirty-five compounds including terpine-4-ol were identified by GC-MS.

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