• 복식문화연구
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• 제15권2호
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• pp.276-283
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• 2007

The purpose of this study were to investigate characteristic changes on nonwoven fabric for disposable work clothes by the yellow soil printing. It separate grind yellow soil as two different size of particles $45\sim52{\mu}m$ and $53\sim65{\mu}m$ for hand screen printing on three kind of nonwoven fabrics. To examine the effect of yellow soil printing on nonwoven fabric were to observe, dyeability by using spectrophotometer, moisture regain by oven method, air permeability, anion property and antibacterial activity. The results were as follows: When yellow soil concentration increased from 5 to 10%, K/S value also increased from 1.05 to 1.88. When yellow soil concentration increased, moisture regain also increased. In same concentration, moisture regain occurred higher as particle of small size. Air permeability decreased when the charcoal printing concentration increased. Anion occurrence appeared $140\sim160ion/cc$ from three different kinds of nonwoven fabrics in 3% and 9% yellow soil concentration. Therefore, occurred anion ineffectively. In concentration of 3%, rate of deodorization measured as 89%, 83% and 87%, and 9% concentration caused 96%, 86% and 93% of high deodorization. Antibacterial activity examination in nonfinished nonwoven fabric resulted range of 60%, however, 3% and 9% concentration finished nonwoven fabric resulted 99.9% of excellent antibacterial activity Surface temperature increased $1.5\sim2^{\circ}C$ by yellow soil finishing.

• Journal of Radiation Protection and Research
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• 제20권1호
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• pp.16-24
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• 1995

활성탄 캐니스터법과 알파분광분석 법을 이용하여 실내 공기중의 $^{222}Rn$ 및 그 딸핵종의 농도와 $^{222}Rn$과 그 딸핵종 사이의 평형인자를 동시에 측정하였다. 실내 체재율을 0.8, 일반인과 작업종사자의 호흡율을 각각 $0.75m^3\;h^{-1}$와 $1.2m^3\;h^{-1}$로 가정하고, 실내 공기중의 $^{222}Rn$과 그 딸핵종의 흡입에 의한 부위별 폐선량을 세가지 모형 즉, Jacobi-Eisfeld, James-Birchall 및 ICRP 모형으로 평가하고 연간총유효선량을 평가하였다.

• Journal of Radiation Protection and Research
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• 제41권2호
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• pp.87-91
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• 2016

Background: A hand-held detector for an emergency response was developed for nuclide identification and to estimate the information of the ambient dose rate in the scene of an accident as well as the radioactivity of the contaminants. Materials and Methods: To achieve this, the most suitable sensor was first selected as a cadmium zinc telluride (CZT) semiconductor and the signal processing unit from a sensor and the signal discrimination and storage unit were successfully manufactured on a printed circuit board. Results and Discussion: The performance of the developed signal processing unit was then evaluated to have an energy resolution of about 14 keV at 662 keV. The system control unit was also designed to operate the CZT detector, monitor the detector, battery, and interface status, and check and transmit the measured results of the ambient dose rate and radioactivity. In addition, a collimator, which can control the inner radius, and the airborne dust sampler, which consists of an air filter and charcoal filter, were developed and mounted to the developed CZT detector for the quick and efficient response of a nuclear accident. Conclusion: The hand-held CZT detector was developed to make the in-situ gamma-ray spectrometry and its performance was checked to have a good energy resolution. In addition, the collimator and the airborne dust sampler were developed and mounted to the developed CZT detector for a quick and efficient response to a nuclear accident.

• 동의생리병리학회지
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• 제17권3호
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• pp.759-764
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• 2003

This study was carried out to understand the effects Of Bambusae Caulis in Liquamen and Silk Worm powder on blood sugar in the db/db mice. Refined Bambusae Caulis in LiquamenD(BCL,D)manufactured by high temperature production process and Silk Worm Powder were used. The Bambusae Caulis in Liquamen extracted from bamboo charcoal manufacturing process was filtered and refined. The effects of BCL.D + Silk Worm Powder and BCL.D were observed in terms of blood sugar, creatinine, BUN, GPT and histological examination of pancreatic tissue in db/db mice. The results were as follows : The amount of glucose was slightly decreased (P < 0.05) in the B CL.D+SWP groups compared with the control. The amount of glucose was significantly decreased (P < 0.01) in the BCL.D groups compared with the control. The amount of Creatinine did not show any differences among three groups. The amount of blood urea nitrogen observed significant decrease in the case of BCL.D groups. The amount of GPT did not show any differences among three groups. The intense of insulin-immunoreactivity of β cells showed the strongest in the normal group, and more strong in the BCL.D+SWP group compared with control group.

• Journal of Plant Biotechnology
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• 제7권1호
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• pp.75-80
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• 2005

Eleutherococcus senticosus (also called Acanthopanax senticosus), belonging to Araliaceae family, has been used as an important medicinal woody plant. Mature seeds of Eleutherococcus senticosus have rudimentary (extremely immature) zygotic embryos and require a long-term stratification for about 18 months to induce germination. Here, through the methods of endosperm removal and other exogenous treatments, we investigated the factors for inducing rudimentary embryos by in vitro culture, Rudimentary zygotic embryos in seeds were at globular to heart-shaped stage at about $250{\mu}m$ in length just after harvest of fruits. When the seeds without testa were cultured on 1/2 MS (Murashige and Skoog 1962) medium, they did not germinate regardless of medium and sucrose concentrations but the removal of endosperm tissue markedly stimulated the growth of rudimentary zygotic embryos. The embryo reached ear-lier maturation, once when the endosperm surrounding the rudimentary embryos was removed. Rudimentary zygotic embryos developed cotyledons within 3 weeks of culture after endosperm emoval. However, post-mature zygotic embryos failed to germinate though they were morphologically normal, indicating another dormancy of embryos. $GA_3\;(2.0\;\cal{mg/L})$ and/or charcoal ($0.2\%$) treatment rapidly enhanced the germination of zygotic embryos. These results suggest that E. senticosus seeds have double dormancy; i. e. morphological rudimentary dormancy influenced by surrounding endosperm and physiological dormancy after post-maturation of zygotic embryos. Based on the above findings, we established the rapid germination of rudimentary zygotic embryos by in vitro culture of excised seeds with endosperm removal and $GA_3$ treatment.

• Journal of Plant Biotechnology
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• 제6권2호
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• pp.91-96
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• 2004

The use of liquid-medium-based procedure relative to the solid media led to a 4.5-fold increase in the number of cotyledon-stage embryos. The most efficient system for multiplication and regeneration of somatic embryos was CP6 procedure with the media MSD40/MSD20/MSM6AC/FNL0S3S3GM. However, the rate of regeneration was lower. About 71％ of the embryos with dicotyledon were continued to develop the roots after desiccation treatment and 92％ of the germinated embryos produced shoots in 10 days. Of the four morphologically different types of embryos, dicotyledonous ones showed a high frequency of conversion, while only a few with fused and horn type cotyledon developed shoots. Mature somatic embryos were desiccated in empty petri dishes for 12-72 h. Embryo survival rate was the highest after 12 h of desiccation, but maximal germination was observed at 24 h. After desiccation, they were placed on MS medium without growth regulators for germination. Germinating embryos were transferred to small pots with vermiculite for plant regeneration. The etiolating the plants during the growth was resolved to add 1％ activated charcoal on hormone-free MS medium.

• 건축역사연구
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• 제15권2호
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• pp.23-38
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• 2006

During the repair and restoration of the Daewoongjeon Hall of Youngguksa Temple, species identification and tree-ring dating for both present wood elements and charred ones excavated under the Hall, were conducted. The species of 74 wood elements of Daewoongjeon Hall, were identified as Pinus densiflora Sieb. et Zucc. and only 1 was identified as exotic Pinus species. The latter wood, which was used in the laths, seems to have been replaced during past repairs. Many documentary records and various artifacts pertaining to Youngguksa Temple are being excavated, but none described precisely the construction date of the present Daewoongjeon Hall. Also, from beneath the Daewoongjeon Hall, cornerstone and foundation of previous building and several charred wood elements were excavated. In comparing the direction of the stone columns of foundation of the previous structure and the existing Daewoongjeon Hall, the previous structure was rotated in an angle of approximately $15^{\circ}$. Therefore, in order to find the association of the previous structure with the present Daewoongjeon Hall, tree-ring dating was conducted. The dating of 41 original timbers and 14 roof-filling timbers of the present construction elements revealed that the last annual ring was of A. D. 1703 with complete latewood, indicating that those woods was cut some time between the autumn of 1703 and spring of 1704, and the building was erected in 1704 when we assume no period of wood storage. The year of the last annual ring of the charred elements, which were excavated from beneath the Daewoongjeon Hall, was analyzed as 1674. The cutting year of the woods used for the present building began in 1698, therefore, it can be presumed that the Daewoongjeon Hall before the fire was a structure that was elected shortly after 1674 and that a catastrophic fire occurred some time between 1674 and 1698.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.409-412
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• 2001

The high purity manganese oxides were made from the dust, generated in AOD process that produces a medium-low carbon ferromanganese and collected in the bag filter. Manganese oxide content in the dust was about 90%, and its phase was confirmed as Mn₃O₄. In the extraction of manganese, because of remaining amorphous MnO₂, the dust was reduced to MnO by roasting with charcoal. The pulp density of the reduced dust can control pH of the solution more than 4 and then Fe ion is precipitated to a ferric hydroxide. Because a ferric hydroxide co precipitates with Si ion etc, Fe, Si ion was removed f개m the solution. Heating made water to be volatized and nitrates was left in reactor Then nitrates were a liquid state and stirring was possible. Among the nitrates in reactor, only the manganese nitrate which have the lowest pyrolysis temperature pyrolyzed into β-MnO₂powder and NO₂(g) at the temperature less than 200℃. When the pyrolysis of manganese nitrate has been completed about 90%, injection of water stopped the pyrolysis. Nitrates of impurity dissolved and the spherical high purity β-MnO₂powders were obtained by filtering and washing. Mn₂O₃or Mn₃O₄ powder could be manufactured from β-MnO₂powder by controlling the heating temperature. Lastly, a manufactured manganese oxide particle has 99.97% purity.

• 농업과학연구
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• 제9권1호
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• pp.275-283
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• 1982

우리나라 주요작물(主要作物)의 종자전염균(種子傳染菌)에 대(對)한 기초자료(基礎資料)를 얻기 위하여 벼, 콩, 보리, 참깨와 시판중(市販中)인 12종(種)의 주요채소류(主要菜蔬類)에서 모두 144개(個)의 종자시료(種子試料)를 수집(收集)하여 종자건전검사(種子健全檢査)를 하였던 바 다음과 같은 결과(結果)를 얻었다. (1) 벼, 콩, 보리, 종자(種子)에서는 각각(各各) 18종(種), 15(種), 7(種)의 진균(眞菌)이 검출(檢出)되었다. 벼의 변색종자(變色種子)에서는 Epicoccum purpurascens, Pyricularia oryzae, Trichoconiella padwickii가 많이 검출(檢出)되었고, 콩종자(種子)에서는 탄저병균(炭疽病菌)인 Macrophomina phaseolina가 우리나라의 콩에서는 처음으로 검출(檢出)되었다. (2) 참깨종자(種子)에서는 12종(種)의 진균(眞菌)이 검출(檢出)되었으며 그 중(中) Alternaria속(屬)과 Corynespora cassiicola가 많이 검출(檢出)되었다. (3) 12종(種)의 시판(市販) 채소종자(菜蔬種子)에서는 모두 21종(種)의 진균(眞菌)이 검출(檢出)되었는데 특(特)히 Alternaria속(屬), Colletotrichum속(屬)과 Fusarium속(屬)이 많이 검출(檢出)되었다. 공시(供試)한 시판(市販) 채소종자(菜蔬種子)의 시료중(試料中)에는 각종(各種) 병원균(病原菌)에 심(甚)하게 오염(汚染)되어 낮은 발아율(發芽率)과 유묘감염(幼苗感染)을 일으키는 것이 있었다.

• 한국자원식물학회지
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• 제19권2호
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• pp.265-272
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• 2006

본 연구는 포자체 배양을 통하여 참쇠고비의 효율적인 번식방법을 구하고자 수행되었다. 배양절편의 기원(근경, 엽병, 엽신)과 절편의 균질화가 신초 계생에 미치는 영향을 조사한 결과, 오직 근경 조직에서만 기관발생능력이 관찰되었고, 식물체 재생은 배양재료를 균질화함으로써 더욱 촉진되었다. MS배지의 무기물 농도를 2배로 첨가한 배지에서 신초의 증식과 생장이 활발히 이루어졌다. 신초 재생에 적합한 배지의 질소함량은 MS배지의 1/2배 수준 이었고, 적정 sucrose농도는 1%였다. 또한 배지에 $NaH_2PO_4$를 첨가함으로써 재생된 식물체의 생육이 전반적으로 촉진되었다. 근경절편의 기관형성능력은 kinetin과 IBA를 혼용 처리함으로써 촉진되었으며, $0.1\sim0.2%$의 활성탄과 생장조절물질을 혼용 처리한 결과, 다수의 싹이 뭉친 듯이 보이는 primordia 형태의 발달이 억제되었고, 포자체의 정상적인 형태형성이 향상되었다.