• Title, Summary, Keyword: 01A60

Search Result 2,079, Processing Time 0.08 seconds

Shielding Analysis for Industrial Package: Focusing on Dry Active Waste (IP형 운반용기 차폐해석-잡고체폐기물을 중심으로)

  • Lee Kang-Wook;Cho Chun-Hyung;Jang Hyun-Kie;Choi Byung-Il;Lee Heung-Young
    • Proceedings of the Korean Radioactive Waste Society Conference
    • /
    • /
    • pp.523-530
    • /
    • 2005
  • In this study, maximum exposure rate at DAW(Dry Active Waste) drum surface which is satisfying regulation limit was calculated for conceptual design of IP(Industrial Package). DAW can be classified as combustible and non-combustible waste and the calculation was conducted for single and mixed radionuclide for each type of waste. In case of combustible waste that mixed radionuclide is uniformly distributed, the maximum exposure rates at drum surface were 3.60E-01, 8.85E-01 and 1.27E+01 mSv/hr for IP Type 1, 2-a and 2-b, respectively. and 3.60E-01, 8.85E-01, 1.27E+01 mSv/hr for single radionuclide(Co-60). In case of non-combustible waste that mixed radionuclide is uniformly distributed, the maximum exposure rates at drum surface were 7.14E-01, 1.83E+00, 2.69E+01 mSv/hr for IP Type 1, 2-a and 2-b, respectively. and 7.13E-01, 1.81E-01, 2.62E+01 mSv/hr for single radionuclide(Co-60). Through this study, the maximum amount of DAW can be transported by IP was suggested as maximum exposure rate at drum surface and the calculation for the other types of waste will be conducted.

  • PDF

Characterization of CTL Clones Specific for Single Antigen, H60 Minor Histocompatibility Antigen

  • Jeon, Ji-Yeong;Jung, Kyung-Min;Chang, Jun;Choi, Eun-Young
    • IMMUNE NETWORK
    • /
    • v.11 no.2
    • /
    • pp.100-106
    • /
    • 2011
  • Background: Disparities of Minor H antigens can induce graft rejection after MHC-matched transplantation. H60 has been characterized as a dominant antigen expressed on hematopoietic cells and considered to be an ideal model antigen for study on graft-versus-leukemia effect. Methods: Splenocytes from C57BL/6 mice immunized with H60 congenic splenocytes were used for establishment of H60-specific CTL clones. Then the clones were characterized for proliferation capacity and cytotoxicity after stimulation with H60. Clone #14, #15, and #23 were tested for the TCR binding avidity to H60-peptide/$H-2K^b$ and analyzed for TCR sequences. Results: H60-specific CTL clones showed different levels of proliferation capacity and cytotoxic activity to H60-stimulation. Clones #14, #15, and #23 showed high proliferation activity, high cytotoxicity, and low activities on both aspects, respectively, and have TCRs with different binding avidities to H60-peptide/$H-2K^b$ with $t_{1/2}$ values of 4.87, 6.92, and 13.03 minutes, respectively. The TCR usages were $V{\alpha}12D-3-01+J{\alpha}11-01$ and $V{\beta}12-1-01+D{\beta}1-01+J2-7-01$ for clone #14, $V{\alpha}13D-1-02+J{\alpha}34-02$ and $V{\beta}13-1-02+D{\beta}2-01+J{\beta}2-7-01$ for clone #15, and $V{\alpha}16D+J{\alpha}45-01$ and $V{\beta}12-1-01+D{\beta}1-01+J{\beta}2-5-01$ for clone #23. Conclusion: The results will be useful for modeling GVL and generation TCR transgenic mouse.

Enzyme treatment for clarification of spoiled oriental melon juice (참외 저급과 주스의 청징화를 위한 효소처리 조건)

  • Jang, Se-Jin;Jo, Yong-Jun;Seo, Ji-Hyung;Kim, Ok-Mi;Jeong, Yong-Jin
    • Korean Journal of Food Preservation
    • /
    • v.21 no.4
    • /
    • pp.506-511
    • /
    • 2014
  • In Gyeongsangbuk-do seongju area, hundreds of tons of spoiled oriental melon are harvested annually. Therefore, ways to prevent such spoilage are needed. This study was conducted to investigate the quality characteristics of spoiled oriental melon juice after enzyme treatment for the production of oriental melon concentrate. The treatment of the oriental melon juice with three kinds of enzymes with variable concentrations showed the following results. PECE(1), which was compounded pectinase and cellulase at 0.01% (v/v), gave the melon a 0.16 brown color and 0.01 turbidity, and the highest L value of 97.00. The detected free sugar contents were fructose, glucose and sucrose, with the amount of sucrose the highest at roughly 4,000 mg%. The mixture of different enzyme treatments resulted in a 0.15 brown color and 0.01 turbidity at 60 minutes, and the L value was high at 97.25. The enzyme treatment temperatures of $50^{\circ}C$ and $60^{\circ}C$ yielded a low-level brown color and low turbidity, but the L values were high at $60^{\circ}C$ and $70^{\circ}C$. These results showed that 0.01% (v/v) mixing enzyme, i.e., pectinase and cellulose compounded at $60^{\circ}C$ for 60 min, must be used for the production of oriental melon concentrate.

Modification of Chemical Characteristics of Organically Enriched Sediment by Urechis unicinctus Juveniles (개불, Urechis unicinctus 치충을 이용한 저질 개선 효과)

  • 강경호;장종윤;김재민
    • Journal of Aquaculture
    • /
    • v.16 no.3
    • /
    • pp.159-164
    • /
    • 2003
  • Effect of the benthic echiurid Urechis unicinctus juveniles on the chemical characteristics of organically enriched sediment, as well as the individual survival rate and growth in various sediments, was investigated in this study to ascertain the effectiveness of U. unicinctus in the bioremediation of organically polluted sediment. The content of acid volatile sulfide (AVS) in the sediment of three coastal areas was 0.4±0.1 mg/gㆍdry sediment in Seonso, 0.1±0.01 mg/gㆍdry sediment in Myo-do, 0.02±0.01 mg/gㆍdry sediment in Dolsan-do, respectively. 500 juveniles with average body length of 1.2±0.3 mm were bred in these sediments. After 30 days, the AVS content of three places decreased to 0.29±0.3, 0.08±0.01 and 0.0l±0.01 mg/gㆍdry. After 60 days, the content was 0.23±0.03, 0.0l±0.01, 0.0l±0.01 mg/gㆍdry. The AVS content in the control (sediment from Seonso without juveniles) was 0.39±0.75 mg/gㆍdry sediment (after 30 days) and 0.45±0.01 mg/gㆍdry sediment (after 60 days). At the same time, the chemical oxygen demand (COD) and total ingition loss (TIL) of these sediments showed the same trend with that of AVS. Furthermore, 60 days later, the survival rate and growth of juveniles were 71.2%, 11.1±l.0 mm in Seonso, 89.8%, 12.0±1.3 mm in Myo-do and 81.6%, 11.9±1.9 mm in Dolsan-do. It was suggested that U. unicinctus can survive better in less polluted environment. Under different U. unicinctus juvenile density (100, 300, 500, 700, 900 individuals), after 60 days cultivation, the AVS content decreased from 0.4±0.1, 0.4±0.1, 0.4±0.3, 0.4±0.3, 0.4±0.3 mg/gㆍdry to 0.4±0.2, 0.3±0.2, 0.2±0.1, 0.2±0.1, 0.2±0.1 mg/gㆍdry. Therefore, the higher the density of juveniles, the greater the effect in improving the sediment. In comparison to different initial AVS concentration (0.40±0.01, 0.35±0.01, [I can't find a reference to this number above], 0.29±0.02, [I can't find a reference to this number above], 0.18±0.03, [I can't find a reference to this number above], 0.06±0.02 mg/gㆍdry sediment [I can't find a reference to this number above] and the control 0.0±0.0[I can't find a reference to this number above]), after 30 days cultivation with 500 juveniles, the AVS content was 0.29±0.03, 0.19±0.0, 0.15±0.01, 0.12±0.02, 0.05±0.0mg/gㆍdry and 0(control). After 60 days cultivation, the content was 0.23±0.03, 0.12±0.4, 0.10±0.01, 0.18±0.03, 0.06±0.02 mg/gㆍdry and 0 (control). Use % decrease in AVS content to state: The impact of U. unicinctus on the sediments was greater with higher concentrations of AVS. The results of this study indicate that U. unicinctus is effective in the biological treatment of sediments polluted by AVS and other organics.

Effects of Lower Dietary Lysine and Energy Content on Carcass Characteristics and Meat Quality in Growing-finishing Pigs

  • Zhang, Jinxiao;Yin, Jingdong;Zhou, Xuan;Li, Fengna;Ni, Jianjun;Dong, Bing
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.21 no.12
    • /
    • pp.1785-1793
    • /
    • 2008
  • Fifty-four PIC barrows were used to evaluate the effects of lower dietary lysine content and energy level on carcass characteristics and meat quality in slaughter pigs. Pigs were allotted to one of three treatments by body weight with six replicate pens in each treatment. The dietary treatments for body weights of 20-50 kg, 50-80 kg and 80-90 kg were as follows, respectively: control diet (digestible energy 14.22 MJ/kg, lysine/DE 0.67 g/MJ, 0.53 g/MJ and 0.42 g/MJ); a low lysine group (digestible energy 14.22 MJ/kg, lysine/DE 0.49, 0.38 and 0.30 g/MJ); and a low lysine-low energy group or low nutrient group (digestible energy 13.11 MJ/kg, lysine/DE 0.49, 0.38 and 0.30 g/MJ). The daily weight gain, daily feed intake and feed efficiency were calculated in the overall growth period (nearly 12 weeks). Meanwhile, carcass characteristics and meat quality were evaluated at 60 and 90 kg body weight respectively. During the overall growth trial, lowering dietary lysine and nutrient level both decreased weight gain (p<0.05) and feed efficiency (p<0.01). At 60 kg body weight, decreasing dietary lysine and nutrient level noticeably decreased dressing percentage (p<0.01) and back fat depth at last rib of PIC pigs (p<0.01), but enhanced marbling scores (p<0.10), intramuscular fat content (p<0.10) and water loss rate (p<0.01) of the longissimus dorsi muscle. At 90 kg body weight, lean percentage (p<0.01) was evidently reduced by both lowering lysine content and nutrient level in the diet. However, the shoulder back fat depth (p<0.05) and marbling scores of the loin eye muscle (p<0.05) were increased; Lowering dietary nutrient level could improve back fat depth of 10th rib (p<0.01) and last rib (p<0.01), intramuscular fat content (p<0.10), redness (p<0.01) and water loss rate of the loin eye muscle (p<0.05), but decrease loin area (p<0.05). Finally, when comparing the 60 kg and 90 kg slaughter weights, it was found that the shoulder back fat depth (p<0.01, p<0.10), 6th-7th rib (p<0.01, p<0.01), 10th-rib (p<0.01, p<0.01) and last rib back fat depth (p<0.01, p<0.01) of the low lysine and low nutrient group were all obviously increased comparing with the control group. Taken together, the results showed that decreasing dietary lysine content and nutrient level increased intramuscular fat content and water loss rate of longissimus dorsi muscle; On the other hand, both lowering dietary lysine and nutrient level markedly compensated to increase back fat deposition in the later finishing period (body weight from 60 to 90 kg) in contrast to the control group.

Sorption Behavior of Cesium-137, Cerium-144 and Cobalt-60 on Zeolites (제오라이트에 대한 세슘-137, 세슘-144 및 코발트-60 흡착거동)

  • Kim, Seok-Chul;Lee, Byung-Hun
    • Journal of Radiation Protection and Research
    • /
    • v.10 no.1
    • /
    • pp.3-13
    • /
    • 1985
  • The sorption behavior of some typical fission products such as Cs-137, long-lived radionuclide; Ce-144, rare-earth element; and Co-60, corrosion product on zeolite A, zeolite F-9 (faujasite) and amorphous zeolite was determined with the salt concentrations, 0.01 M- to 2.0 M- nitric acid and ammonium nitrate, and the shaking time, 15 minutes interval from 15 minute to 90 minute. Kd values were obtained through the batch experiment. In conclusion, the optimal conditions for isolation and removal of the typical radionuclides are as following: zeolite, amorphous zeolite; concentration, $0.01\;M-HNO_3\;and\;0.1\;M-NH_4NO_3$; pH4; shaking time, one hour; the most effective species, Cs-137.

  • PDF

A study on the optimum ratio of the ingredients in preparation of black sesame gruels (흑임자죽 재료배합비의 최적화 연구)

  • 박정리;김종군;김정미
    • Korean journal of food and cookery science
    • /
    • v.19 no.6
    • /
    • pp.685-693
    • /
    • 2003
  • The aim of this study was to develop a standardized recipe for black sesame gruel that has been preferred for generations as a nutritional food. The method focused on optimizing the mixing ratio of the components to improve the quality of the black sesame gruels that modem consumers would like. The results are summarized as follows: The more black sesame added to the gruel, the lower its brightness was, but the redness and yellowness was higher. The amount of black sesame made a significant difference in the viscosity, color, nutty taste, bitterness, appearance and overall preference. It was highest in the overall preference when the amount of black sesame was added 33g(40% of rice weight basis). Different types of rice were added to the black sesame gruel, and it was observed that the color value of the gruel was high in its brightness, redness and yellowness when 50g(60%) of glutinous rice was added to it. The black sesame gruel was most preferred when 50g of non-glutinous rice was added. The redness value was high when 15g(18%) of non-glutinous rice flour was added. The yellowness value was high when 25g(30%) of non-glutinous rice flour was added. This observation showed significant differences in the viscosity, color, nutty taste, bitterness, appearance and overall preference. In particular, the black sesame gruel was most preferred when 50g of non-glutinous rice flour was added. The addition of 7g(9%) of salt to the black sesame gruel showed the highest brightness. The redness and yellowness was the highest when 5g(6%) of salt was added. This observation showed a significant difference in the viscosity, color, nutty taste, bitterness, appearance and overall preference. The highest preference was observed when 2.5g(3%) of salt was added. Adding more materials increased the viscosity of the black sesame gruel. With increasing temperature, the viscosity became lower, and vice versa. The intensity of sweetness and spreadability was found to be proportional to the amount of additive material. In conclusion, the optimum recipe for black sesame gruels was obtained 33g(40%) of black sesame, 50g(60%) of glutinous rice (flour), 2.5g of salt, and 500$m\ell$ of water.

PROTECTION OF DNA BY SCUTELLARlA BAICALENSIS IN HL-60 CELLS EXPOSED TO $\gamma$-RAYS; ANALYSED BY MICRONUCLEI FORMATION AND SINGLE CELL GELL ELECTROPHORESIS

  • Heon Oh;Park, Hae-Ran;Ham, Yeon-Ho;Kim, Sung-Ho;Jo, Sung-Kee
    • Proceedings of the Korean Society of Toxicology Conference
    • /
    • /
    • pp.107-107
    • /
    • 2001
  • In the present study, the protective effect of Scutellaria baicalensis against DNA damage in HL-60 cells exposed to $^{60}$ Co ${\gamma}$-rays was evaluated using micronuclei formation and alkaline single cell gel electrophoresis (SCGE, comet assay). The frequency of micronuclei was decreased in groups treated with water extract (P<0.01), polysaccaride fraction (P<0.01) and methanol fraction (P<0.01) before/after exposure to 200 cGy of ${\gamma}$-rays.(omitted)

  • PDF

Survey on the Perceptions for Dental Implant Surgery and Maintenance Care (치과 임플랜트 상담 환자의 임플랜트 수술 및 유지관리에 대한 인식도 조사)

  • Park, Hong-Ryurn
    • Journal of dental hygiene science
    • /
    • v.7 no.3
    • /
    • pp.167-177
    • /
    • 2007
  • The purpose of this study was to obtain basic data for dental implants prosthetic maintenance care after analysis perceptions of dental implants. A question was used to questionnaire by 210 dental patients at five dental clinics in the Jinju-city. In conclusion, 1. The knowledge level about implant is 'Never'(35.7%). 2. A feeling of unrest during implant surgery is 'pain'(37.6%). 3. The expectation level about dental implants function is 70% of natural teeth(36.2%). 4. The main function of implant teeth is 'mastication'(70.5%). 5. The implant hygiene supplies for the dental implants maintenance is 'proximal brush'(60%). 6. The important maintenance attitude for the dental implants is 'regularly dental examination'(42.9%). 7. The interval regularly for implant examination is 'six monthly'(44.8%).

  • PDF

The Effects of Treadmill Aerobic Exercise Training on Isokinetic Muscle Strength in Students with Cerebral Palsy (트레드밀 유산소 운동이 뇌성마비학생의 등속성 근력에 미치는 영향)

  • Kang Soon-Hee
    • The Journal of Korean Physical Therapy
    • /
    • v.16 no.4
    • /
    • pp.1-10
    • /
    • 2004
  • The purpose of this study was to investigate the effects of treadmill aerobic exercise training on isokinetic muscle strength in students with cerebral palsy. The subjects consisted of 9 female students with cerebral palsy between the ages of 10 to 22. The subjects performed treadmill aerobic exercise training with $0\%$ grade by free speed with three times a week for 20 minutes a session and 12 weeks. Concentric peak torque of knee flexors and knee extensors was measured before training and after training at $30^{\circ}/sec$ and $60^{\circ}/sec$ by isokinetic dynamometer. Paired t-test was used to assess changes in variables of isokinetic muscle strength. The results of analysis are as followings. 1) After training, concentric peak torque of the least affected knee flexors(p<.01) and the most affected knee flexors (p<.01) and concentric peak torque of the least affected knee extensors(p<.01) and the most affected knee extensors(p<.01) at $30^{\circ}/sec$ significantly increased. 2) After training, concentric peak torque of the least affected knee flexors(p<.05) and the most affected knee flexors(p<.01) and concentric peak torque of the least affected knee extensors(p<.05) and the most affected knee extensors(p<.01) at $60^{\circ}/sec$ significantly increased. These findings provide evidence that treadmill aerobic exercise training improves isokinetic muscle strength in students with cerebral palsy.

  • PDF