• Title/Summary/Keyword: L5

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Effects of Planting Soil on the Soil Moisture and the Growth of Vitex rotundifolia for Green Roof (옥상녹화 식재지반이 토양수분과 순비기나무의 생육에 미치는 영향)

  • Park, Jun-Suk;Park, Je-Hea;Ju, Jin-Hee;Yoon, Yong-Han
    • Journal of the Korean Institute of Landscape Architecture
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    • v.38 no.3
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    • pp.98-106
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    • 2010
  • This study focuses on the appropriate planting soil for Vitex rotundifolia by planting soil. Different soil depth levels were achieved at 15cm and 25cm in the green roof module system that was created with woody materials for a $500{\times}500{\times}300mm$ area. The soil mixture ratio was $S_{10}$, $L_{10}$, $S_7L_3$, $S_5L_5$, $P_7P_1L_2$, $P_6P_2L_2$, $P_5P_3L_2$ and $P_4P_4L_2$. This study was carried out over five months between April and September, 2006. The amount of soil moisture tends to decrease according to the planting soil. For the experimental items $S_{10}$, $S_7L_3$ and $S_5L_5$, the amount of soil moisture tends to decrease rapidly. However, for the experimental items $P_7P_1L_2$, $P_6P_2L_2$, $P_5P_3L_2$ and $P_4P_4L_2$, conditions containing perlite and peat moss, the amount of moisture tends to decrease more gradually. As a result, the use of soil-improving amending for the afforestation planting of roofs with a low level of management is need. After experimenting with the ratio of soil mixture for Vitex rotundifolia, the planting soil for experimental item $P_6P_2L_2$, $P_5P_3L_2$ and $P_4P_4L_2$ appeared excellent. For experimental item $S_{10}$, the growth of Vitex rotundifolia seemed to be weaker than that of others, because of the low levels of moisture and organic matter in the soil. For experimental item $L_{10}$, there appeared to be a low level of growth, even when the levels of moisture and organic matter were high. This may have occurred because of the low level of soil pH and the excessive amount of exchangeable cation. At the depth of 25cm, the growth of Vitex rotundifolia is vigorous overall. For experimental item at 15cm, Vitex rotundifolia was able to survive for 14 days without any rainfall and Vitex rotundifolia was better in amended soil, $P_6P_2L_2$, $P_5P_3L_2$ and $P_4P_4L_2$, than natural soil, SL.

Optimization of the Medium and Fermentation Conditions with Erythritol Producing Moniliella suaveolens var. nigra (에리스리톨 생산 균주인 Moniliella suaveolens var. nigra를 이용한 배지 및 발효조건의 최적화)

  • Choe, Byeong-Uk;Park, Hong-U
    • KSBB Journal
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    • v.14 no.5
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    • pp.628-632
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    • 1999
  • Optimization of the medium and fermentation conditions for erythritol production has been studied. We have found that the optimal carbon source was glucose at the concentration of 400 g/L. The optimal temperature was 3$0^{\circ}C$ with excessive aeration. Improved erythritol productivity was achieved by reducing the yeast extract from 5 g/L to 3g/L while adding 2.7 g/L urea, 1.79g/L $K_2HPO_4, and 0.18g/L MgSO$_4$. 7$H_2O. The erythritol productivity increased from 0.747 g/L/h to 1.071 g/L/h and the yield increased from 31.4% to 45.2%. The byproduct glycerol was reduced from 96.6g/L to 45.7g/L as well. We have performed 5L fermentation with and without the pH control. The erythritol productivity with the pH control was about 30% lower than that without pH control. Excessive foaming of 5L fermentation has been observed during fermentation.

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Radiological Findings of Relation Between Intercrestal Line and HIVD of Lumbar Spine (Intercrestal line 높이와 요추 추간판 탈출증의 상관관계에 대한 영상학적 연구)

  • Choo, Won-Jung;Kim, Min-Yeong;Seo, Min-Soo;Lee, Cha-Ro;Choi, Hee-Seung;Choi, Young-Il;Nam, Hang-Woo
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.6 no.2
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    • pp.53-60
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    • 2011
  • Objectives : The purpose of this study is to find out the relation between the height of intercrestal line, and HIVD(Herniated Intervertebral Disc)of Lumbar spine. Methods : We investigated 445 cases (208 male, 237 female) of patients who were diagnosed as HIVD of L-spine at either L4/5 or L5/S1 level. We analysed the relation between the height of intercrestal line and the level of HIVD. Results : 1. Among 445 cases, the level of intercrestal line with HIVD of L-spine at the specific location was different between male and female. In male, the intercrestal line is more likely to be located at L4 level, while in female more likely to be located at L5 level. 2. Among 445 cases, L5/S1 HIVD patients(272, 61.1%) were more than L4/5 HIVD patients(173, 38.9%). At L4 body area, L4/5 HIVD patients were more than L5/S1 HIVD patients, however, at L4/5 intervertebral area and L5 body area, L5/S1 HIVD patients were more than L4/5 HIVD patients. (p<0.01) 3. When the line is located at higher level, HIVD of L-spine tends to be occurred at L4/5 level. Contrastly, when the line is located at lower level, HIVD of L-spine tends to be occurred at L5/S1 level. (p<0.01) Conclusions : High intercrestal line leads to L4/5 HIVD, while low intercrestal line leads to L5/S1 HIVD. Possibly, it is caused by different length and thickness of the iliolumbar ligament.

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In Vitro Propagation of Lilium Asiatic Hybrid 'Hae Hwa' via the Formation of Shoot Clusters (신초 Cluster 형성에 의한 Lilium Asiatic Hybrid 'Hae Hwa'의 기내번식)

  • Han, Bong-Hee;Yu, Hee-Ju;Yae, Byeoung-Woo;Goo, Dae-Hoe
    • Journal of Plant Biotechnology
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    • v.29 no.1
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    • pp.19-23
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    • 2002
  • This experiment was conducted to micropropagate bulblets via shoot cluster formation and massproduce normal bulblets from the sections of proliferated shoot clusters in Lilium asiatic hybrid 'Hae Hwa'. The induction of shoot clusters from the culture of bulblet sections was more effective than that of bulb scales on MS medium with 1.0 mg/L BA and 0.5 mg/L IAA. Proliferation of shoot clusters from the formed shoot cluster sections was the most favorable on medium containing 5.0 mg/L BA and 0.5 mg/L IAA. The formation and the growth of bulblets from shoot cluster sections were achieved effectively on medium with 60∼90 g/L sucrose. The leaves derived from shoot clusters grew vigorously but the bulblets from shoot clusters grew very poor in 5L air-lift bioreactor culture. By the addition of 30 mL fresh liquid medium containing doulble strength MS salts, 250 g/L sucrose and 5 g/L activated charcoal after 8 weeks in the shoot cluster culture on MS medium with 5.0 mg/L BA and 0.5 mg/L IAA, the number of bulblets was increased in light condition, but the growth of bulblets was not affected by light. Bulblet production was possible with the bulblet product at 53 to 68 mg in fresh weight by liquid medium addition after the proliferation of shoot cluster.

A case of fused lumbar vertebrae in Cheju native horse (제주말의 요추골유합 1례)

  • Kim, Chong-Sup;Won, Chung-Kil;Suh, Myung-Deuk
    • Korean Journal of Veterinary Research
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    • v.43 no.1
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    • pp.1-3
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    • 2003
  • The fused lumbar vertebrae (L) of the female Cheju native horse were observed macroscopically. The 5th L and 6th L were partially fused. They were composed of four parts between the spinous process of the 5th L and 6th L, left and right transverse process of the 5th L and 6th L, caudal articular process of the 5th L and cranial articular process of the 6th L, and fossa of vertebra of the 5th L and head of vertebra of the 6th L. The dorsal lumbar foramen and ventral lumbar foramen were formed each at left and right of medial parts in the fused transverse processes of the 5th and 6th lumbar vertebrae.

Analysis of Lipid Composition in Various Fast-Foods (시판 패스트 푸드의 지질조성에 관한 연구)

  • 김난숙;김성애
    • Korean journal of food and cookery science
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    • v.10 no.2
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    • pp.131-137
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    • 1994
  • This study was to investigate fat content and fatty acid composition of 19 various fast-foods. Fat content per serving in double cheese burger was 38.8g, shrimpburger 27.5g, gogi-mandoo 26.3g, pizza 25.8g and chicken nuggets 18.8g, respectively, Fatty acid contained in fast-foods mostly were oleic acid, palmitic acid, linoleic acid and stearic acid. The ratio of P/S in yubuLchobab was 3.l/l, ccochinoodle 2.3/l, pork cutlet 2.3/l, bibimbab 1.511 and shrimpburger 1.3/l when all the other tested fast-foods'P/S were less than 1. The ratio of P/M/S in ham cheese sandwich was 1/1/1, shrimpburger 1.3/1.5/l, bibimbab 1.s/l.5/l, which are similar to recommended 1∼1.5/1∼1.5/l. The ratio of 6/3 fatty acids was found to be kimbab(34.0/l), chicken nuggets(25.3/l), ccochi noodle(20.0/l), yubu-chobab (16.5/l), fried chicken(16.3/l), chickenburger(12.6/l) and hot dog(10.2/1), which were higher than 10/1. Also pizza(3.511), spaghetti(3.7/l) were lower than 4/1. The rest of the fast-foods were within the range of 4/1∼10/1.

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Status of Water Quality in Nakdong River Districts (낙동강 수계의 수질 현황)

  • Lim, Young-Sung;Cho, Ju-Sik;Lee, Hong-Jae;Lee, Young-Han;Sohn, Bo-Kyoon;Heo, Jong-Soo
    • Korean Journal of Environmental Agriculture
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    • v.18 no.2
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    • pp.126-134
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    • 1999
  • To provide the basic information for the water improvement and control of water resource in Nakdong river districts, the physico-chemical characteristics of water in four main streams and three branch streams of the river were investigated through 36 times totally, one time per each month from January in 1995 to November in 1997. The pH values of each sites in main or branch stream of Nakdong river was pH $6.3{\sim}9.3$ range, pH range of Jukpo and Namji area at spring and fall was almost over pH 8.5, which was exceeded the water quality standard for agriculture. DO values of Nakdong river was almost $8.0{\sim}13mg/l$, except for Kangchang area in downstream of Kumho river. BOD values in Dasa area where was prior to mixing of Kumho river was $1.5{\sim}4.8mg/l$, which was under the water quality standard for agriculture(8mg/l), but BOD values followed mixing of Kumho river was over the permit standard of agricultural water as $3.8{\sim}8.9mg/l$ in Koryung, $3.4{\sim}8.4mg/l$ in Jukpo and $3.3{\sim}7.8mg/l$ in Namji according to time or season. Especially, BOD values at Gangchang area in Kumho river were $7.6{\sim}18.5mg/l$, which was over the water quality standard for agriculture and so Kumho river was a main pollutant: source of Nakdong river. COD values of main stream of Nakdong river was over the permit standard of agriculture(8mg/l) as $5.2{\sim}13.5mg/l$ in Koryvng, $5.0{\sim}12.7mg/l$ in Jukpo and $5.0{\sim}12.2mg/l$ in Namji according to time or season. And COD values was much high rather than BOD values and its gap of concentration was increased along with downstream. $NH_4-N$ of main stream of Nakdong river followed mixing of Kumho river($0.5{\sim}13.1mg/l$) was the highest affected in Koryung($0.18{\sim}5.0mg/l$) and detected much more in winter than in summer. T-N in Koryung($4.96{\sim}12.06mg/l$) followed mixing of Kumho river was significantly high rather than $2.86{\sim}4.86mg/l$ in Dasa, $4.20{\sim}8.20mg/l$ in Jukpo and $3.18{\sim}8.64mg/l$ in Namji, which was almost over the permit standard of agricultural water(1.0mg/l). T-P in Koryung($0.10{\sim}0.58mg/l$) also was significantly high rather than those $0.07{\sim}0.36mg/l$ in Jukpo and $0.08{\sim}0.4mg/l$ in Namji as over the standard of agricultural water(0.1mg/l). The concentration of T-N or T-P in Nakdong districts was trended of increasing in every year.

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Detection and genetic characterization of Lawsonia intracellularis from swine in Korea

  • Chu, Jia-Qi;Hu, Xu-Min;Kim, Myung-Cheol;Park, Chang-Sik;Jun, Moo-Hyung
    • Korean Journal of Veterinary Service
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    • v.33 no.3
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    • pp.223-231
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    • 2010
  • A total of 191 samples collected from the commercial swine farms located in Chungnam province were investigated by PCR to estimate the prevalence of Lawsonia (L.) intracellularis infection. In the group of the pigs with proliferative enteritis, 14 (93.3%) of 15 intestinal samples and 12 (80.0%) of 15 feces were positive in PCR. In contrast, a relatively low positive rate (18.0%, 29 of 161 samples) was determined in the group of normal healthy pigs. The group of pigs over 120 days showed the highest positive rates (26.8%, 15 of 56 samples). In the comparison of the sequences of 210bp for species specific fragments and 301bp for outer membrane protein, the isolates (L1. L2) showed almost 100% identity with the reference L. intracellularis (L08049, USA). For the sequences of partial 16s rDNA, the homologies among the 5 isolates (L1-L5) were 97.4% to 99.3%, and those of 5 sequences (L1-L5) versus 5 overseas reference strains of L. intracellularis ranged from 98.6% to 99.8%. In the comparison of the nucleotide sequences among 5 isolates and other species in Desulfovibrionales showed 82.4 to 99.5% identities. The 5 isolates shared relatively low identities (76.9% to 84.4%) with the species of alpha-proteobacteria. In phylogenetic analysis based on the 16s rDNA sequences, all of the 5 isolates (L1-L5) were located in the same branch with the strains of L. intracellularis that were previously isolated from the pigs in USA and China. Seven strains of Desulfovibrio sp. were clustered in the neighboring branches, whereas alpha and gamma Proteobacteria showed distant relationship with L. intracellularis strains. The present findings suggest that L. intracellularis infection is endemic in the swine farms in the regions, and that the domestic isolates maintained very limited genetic variation.

The Characteristics of Tetrachloroethylene (PCE) Degradation by Pseudomonas putida BJ10 (Pseudomonas putida BJ10의 Tetrachloroethylene (PCE) 분해 특성)

  • Choi, Myung-Hoon;Kim, Jai-Soo;Lee, Sang-Seob
    • Korean Journal of Microbiology
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    • v.44 no.4
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    • pp.311-316
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    • 2008
  • In this study, biological PCE degradation by using a BTEX degrading bacterium, named BJ10, under aerobic conditions in the presence of toluene was examined. According to morphological, physiological characteristics, 16S rDNA sequencing and fatty acid analysis, BJ10 was classified as Pseudomonas putida. As a result of biological PCE degradation at low PCE concentrations (5 mg/L), PCE removal efficiency by P. putida BJ10 was 52.8% for 10 days, and PCE removal rate was 5.9 nmol/hr (toluene concentration 50 mg/L, initial cell density 1.0 g (wet weight)/L, temperature 30, pH 7 and DO $3.0{\sim}4.2\;mg/L$. At high PCE concentration (100 mg/L), PCE removal efficiency by P. putida BJ10 was 20.3% for 10 days, and PCE removal rate was 46.0 nmol/hr under the same conditions. The effects of various toluene concentration (5, 25, 50, 100, 200 mg/L) on PCE degradation were examined under the same incubation conditions. The highest PCE removal efficiency of PCE was 57.0% in the initial PCE concentration of 10 mg/L in the presence of 200 mg/L toluene for 10 days. Furthermore, the additional injection of 5.5 mg/L PCE (total 7.6 mg/L) made 63.0% degradation for 8 days in the presence of 50 mg/L toluene under the same conditions. Its removal rate was 13.5 nmol/hr, which was better than the initial removal rate (8.1 nmol/hr).

Dyeability and Antimicrobial Activity of Silks Dyed Singly with Sophora japonica L., Curcuma longa L., Combination-Dyed with Polygonum tinctorium L. and Sophora japonica L., and with Polygonum tinctorium L. and Curcuma longa L. (회화 및 울금에 의한 단독 염색 견직물 그리고 쪽과 회화 및 쪽과 울금에 의한 복합 염색 견직물의 염색성 및 항균성)

  • Jung, Jin Soun
    • The Journal of the Convergence on Culture Technology
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    • v.6 no.4
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    • pp.45-52
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    • 2020
  • We examined the dyeability and antimicrobial activity of silks dyed singly with Sophora japonica L., Curcuma longa L., combination-dyed with Polygonum tinctorium L. and Sophora japonica L., and with Polygonum tinctorium L. and Curcuma longa L.. The color of silk dyed singly with Sophora japonica L., Curcuma longa L. was Yellow with Hue of 5.0Y and 0.6Y, respectively. Two types of combination-dyed silk were Blue Green with 2.6BG and 1.5BG, respectively. In the case of dry Cleaning fastness and rub fastness, all four types of dyed silk was good, achieving grade 4~5. The antimicrobial activity of Staphylococcus aureus of silk dyed with Sophora japonica L. extract showed excellent antibacterial activity of 99.5% and the other three types of dyed silk of 99.9%. In addition, in antibacterial activity against Klebsiella pneumonia, silk dyed with Sophora japonica L. extract showed 99.6%, and the other three types of dyed silk exhibited excellent antibacterial properties of 99.9%.