• Title/Summary/Keyword: cellophane

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Studies on the Detergency Characteristics of Triglyceride -Correlating the substrates- (Triglyceride의 세척성에 관한 연구 -기질의 영향-)

  • Chung Hae Won
    • Journal of the Korean Society of Clothing and Textiles
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    • v.8 no.1
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    • pp.39-45
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    • 1984
  • The effects of Temperature on the removal of triglyceride were studied with soaps having various chain lengths of alkyl group. Cellophane, polyester film and alkali-treated polyester film were soiled with tripalmitin, tagged with 0" and detergency was evaluated by analysing the tripalmitine on the fabric before and after washing by means of liquid scintillation counting. The results were as following: 1) Triglyceride was completely removed from cellophane in distilled water without surfactant at any temperature, because of the hydrophillic nature of cellulose. The detergency of triglyceride from polyester film fully depended on the state of tripalmitin. The detergency of alkali treated polyester film was better than that of untreated polyester film at lower temperature due to increased hydrophillcity, but worse at higher temperature due to the diffusion of molten tripalmitin into the grooves, formed by alkali treatment. 2) The detergency from polyester film was increased with elevating temperature and after reaching some optimum detergencies, the detergencies were rather decreased with increasing temperature. The temperatures of optimum detergency were shifted to higher with increasing chain length of alkyl group. 3) When the soiled film was baked at $60^{\circ}C$ and $70^{\circ}C$ for 20 min, the detergency vs. temperature was much the same as the case of without-baking. These results indicate that the detergency of triglyceride was largely correlated with the suspending power of surfactants at low temperature and with state of soil and hydrophilicity of substrates with elevating temperature.

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Comparative Study on the Effectiveness of Modified Kato's Cellophane Thick Smear and Stoll's Dilution Egg Counting Technique for Quantitative Fecal Examination of Helminth Eggs (윤충란 정량검사를 위한 Stoll 희석충란계산법과 Kato 후층도말변법의 비교)

  • 홍성종;우호춘
    • Parasites, Hosts and Diseases
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    • v.30 no.2
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    • pp.141-146
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    • 1992
  • A total of 197 fecal specimens was prepared for quantitative examination of helminth eggs by modified Kato's cellophane thick smear (M.C.T.S.) and Stoll's dilution egg counting technique (D.E,C.T.). The comparative effectiveness of two techniques was evaluated and conversion function was deduced. The average time required for the microscopic examination on one slide by M.C.T.S. was 12.6 minutes and that of D.E.C.T. was 14.6 minutes. M.C.T.S. showed lower false negative rate than D.E.C.T in light worm burden cases. Functions to convert the counts obtained by M.C.T.S. to E.P.G. by Stoll's dilution egg counting technique were $47.86{\times}10^{0.87{\;}logM.C.T.S.},{\;}$ in A. lumbricoides, $41.69{\times}10^{0.82{\;}logM.C.T.S.}$ in T. trichiura and $63.10{\times}10^{0.85{\;}logM.C.T.S.}$ in C. sinensis. It was suggested M.C.T.S. be better than D.E.C.T. for the quantitative examination of intestinal helminthiases such as A. lumbricoides, T. trichiura, and C. sinensis infections even in the cases with low worm burden.

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Protoplast Formation of Collectotrichum acutum and the Assessment of Antifungal Activity of Several by using its Protoplasts (고추 탄저병군(Colletotrichum acutatum)의 원형질체 형성과 원형질체를 이용한 살균제 효과 검정)

  • Kim, Myoung-Ki;Kim, Heung-Tae
    • The Korean Journal of Pesticide Science
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    • v.12 no.1
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    • pp.88-96
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    • 2008
  • To obtain protoplasts of Colletotrichum acutatum JC24, conidia were inoculated onto cellophane membrane placed on PDA and incubated at $25^{\circ}C$ for 20 hrs under the dark condition. Cellophane membranes, where mycelia were incubated, were soaked into 2% lysing enzyme solution prepared with 0.02 M phosphate buffer (pH 7.0) including 1.2 M sorbitiol. After treatment in 2% enzyme solution for 2 - 3 hrs, it could be possible to harvest $2-3\;{\times}\;10^6$ protoplasts/mL. The effect of several fungicides on reversion ratio was determined by using the protoplasts obtained from C. acutatum JC24. Any protoplasts could not be reversed to mycelia on reversion PDA amended with $10\;{\mu}\;g\;mL^{-1}$ of propineb. With tebuconazole, inhibition ratio of protoplast reversion was 100 and 0.9% at 0.5 and $0.1\;{\mu}\;g\;mL^{-1}$, respectively, while inhibitory effect on mycelial growth was 85.1 and 75.7%. The inhibitory tendency of carbendazim on protoplast reversion was as same as mycelial growth. In the case of strobilurins, trifloxystrobin and kresoxim-methyl, they only could inhibit protoplast reversion of C. acutatum JC24, when salicylhydroxamic acid (SHAM) was amended into reversion PDA with strobilurins.

Prevalence of intestinal parasite infections on a national scale among primary schoolchildren in Lao PDR (라오스 초등학생의 장내 기생충 감염 실태 조사)

  • Im, Han-Jong;Chae, Jong-Il;Min, Deuk-Yeong;Jo, Seung-Ryeol;Eom, Gi-Seon;Hong, Seong-Jong;Son, Mun-Mok;Yong, Tae-Sun;GiovanniDeodato;HanneStrandgarrd;BounlayPhommasack;Yun, Cheong-Ha;Hwang, Ui-Hyeok
    • Journal of Korea Association of Health Promotion
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    • v.3 no.1
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    • pp.62-71
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    • 2005
  • In order to investigate the epidemiological situation of intestinal parasite infections in Lao PDR, parasitological surveys were carried out on a national scale including 17 Provinces and the Vientiane Municipality. A total of 29,846 stool specimens were collected from primary schoolchildren in May 2000 June 2002 and examined once with the cellophane thick smear technique. The cumulative egg Positive rate For intestinal helminthes was 61.9%, BV species, the rate for As caris lumbricoides was 34.9%, hookworm 19.1%, Trichuris trichiura 25.8%,Opisthorchis viverrini 10.9%, Taenia spp. 0.6% and Hymenolepis spp. 0.2%. The northern mountainous regions suck as Phongsaly, Huaphan or Saysomboune Province showed higher prevalence(over 70%) of soil- transmitted helminthes. The regions along the Mekong River such as Khammuane, Saravaue or Savannakhet Province showed higher prevalence(over 20%)of fish-borne parasites. On the other hand, Schistosoma mekongi eggs were detected from1.7% of schoolchildren only in Champassak Province, a previously known endemic area. The highest prevalence was noted in Phongsaly Province(96.0%) and the lowest in Bolikhamxay Province(27.5%). An additional smal1-scale survey by cellophane anal swab detected Enterobius vermicularis eggs in 35.7% of 451 schoolchildren aged 6-8 in Khammuane, Vientiane, Champassak Province and the Vientiane Municipality. Meanwhile, the mean blood hemoglobin level of hootrworm-infected children was not lower than that of hookworm-uninfected children, suggesting that nutritional factors are more important than parasite infection per se. Nevertheless, the above results indicate that a nationwide parasite control project is necessary to reduce possible morbidity of parasitic diseases in the country.

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An Investigation of Prepenetration structure by the soybean anthracnose fungus, Glomerella glycines (콩 탄저병균(Glomerella glycines)의 침입 전 구조에 관한 연구)

  • Chung B. K.
    • Korean journal of applied entomology
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    • v.8
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    • pp.25-28
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    • 1969
  • In order to find out the effect of contactor to form appressorial structure of Glomerella glycines, this experiment was carried out by using several contactors such as cover glass. cellophane, vinyl and oil paper respectively. In the case of cover glass placed on a drop of conidial suspension of the fungus which is incubated on water agar for 12 hours, 67.7 percent of appressoria were resulted, whereas no appressorial structure was found in the control. Vinyl was known best physical contactor and cellophane, cover glass and oil paper were fairly good in that order. Effects of temperature, time and relative humidity on the formation of appressoria of G. glycines were similar to each of optimum growth range of temperature and relative humidity $25^{\circ}-30^{\circ}C$ and 70-100 Percent, respectively. In addition, maximum appressorial formation was resulted in the conidial suspension incubated on soybean leaves for 36 hours. No appressorium was found at above $35^{\circ}C$, below R.H. 70 percent and 5 hours incubation.

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Effects of Colored Transparent Cellophane Films and Colorless Transparent Cellophane Films Coated Respectively with Pyridine, Benzophenone, and p-Aminobenzoic Acid on the Sunlight Accelerated Oxidation of Edible Soybean Oil (착색투명(着色透明)셀로팬 및 피리딘, 벤조페논, p-아미노벤졸산(酸) 등(等)으로 처리(處理)된 무색투명(無色透明)셀로팬으로 덮은 식용대두유(食用大豆油)의 직사일사광선(直射日射光線)에 의한 산패(酸敗)에 대하여)

  • Lee, Yong-Sie;Kim, Dong-Hoon
    • Korean Journal of Food Science and Technology
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    • v.4 no.4
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    • pp.239-244
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    • 1972
  • Commercial edible soybean oil was introduced into plastic containers. Colorless transparent (control), red transparent, green transparent cellophane films and, also, colorless transparent cellophane films coated respectively with Cemedine C, Cemedine C containing 10% pyridine, benzophenone, and p-aminobenzoic acid were prepared, and the % transmittance of each film to lights at U.V. and visible regions were measured. The containers were covered with the films and irradiated simultaneously with direct sunlight for 4.5 hours daily. The peroxide values of the oils in the plastic containers were determined at regular intervals. The effects of the Alms on the PV development of the oils were compared with that of the control, i.e., the colorless transparent films.The red and green films showed strong retarding effects ell the PV development. The red films showed a slightly stronger effect than the green ones. The colorless transparent films coated with Cemedine C showed an appreciable retarding effect. The films had absorbed the lights at the U.V. and visible regions considerably. The pyridine and benzophenone coated films lost their retarding effects after 10 and 4 days respectively. The p- aminobenzoic acid coated films showed a considerable retarding effect throughout the experimental period. The films had absorbed the lights strongly .As a whole, the retarding effects of the films on the PV development were, in decreasing order. as follows; Red> Green> p-Aminobenzoic acid coated > Cemedine Ccoated) Control > Pyridine coated > Benz ophenone coated

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A Study on the Intestinal Helminths of the Patients in a Leprosarium in Korea (전남 소록도 주민의 장내기생충 감염실태 및 조충의 치료성적)

  • 홍성태;홍성종이순형김익상
    • Parasites, Hosts and Diseases
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    • v.21 no.1
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    • pp.102-104
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    • 1983
  • A total of 2,026 leprosy patients of the National Sorokdo Hospital was examined their infestparasites by cellophane thick smear method in January, 1983. The egg positive cases of Taenia spp. were treated with bithionol and the segments of Taenia were collected for species identification. The results were as follows: 1. Total egg Positive rate of any kind helminth was 78.2% and cumulative total was 85.2%. The egg positive rate for each helminth was as follow; Taenia spp. 3.4%, Ascaris lumbricoides 4.5%, Trichuris trichiura 72.1%, Clonorchis sinensis 2.8% and other 0.05%. 2. A total of 66 Taenia eggpPositive cases was treated; out of them proglottids of Taenia were collected from 26 cases. All of the collected worms were identified as T. saginata. The results revealed signiBicantly high egg positive rate of T. trichiura. However, A. lumbricoides was found to be controlled considerably by repeated chemotherapy during past 3 years. If chromotherapeutic agent is replaced with oxantel-pyrantel tablet, better result is expected. No clue was found for prevalence of T. sodium from both human and the pig in the island.

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Photodegradation of Cellulosics(Part II) - Chemical Properties of Irradiated Cotton - (Cellulose의 광분해에 관한 연구(II) - 광조사된 면섬유의 화학적 성질을 중심으로 -)

  • 전경숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.18 no.1
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    • pp.15-22
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    • 1994
  • The formation of carbonyl group was dominant to other functional groups. Concentrations of both carboxyl and peroxide groups were found to rapidly reach low steady state values that increased slightly with increa-sing temperature and relatice humidity. Since the deg-radation of cellulose samples was in the initial stage and the conversion of glycosidic bonds and hydroxyl groups were very small, it was found that changes in the physical and chemical properties could be fitted to a first-order reaction model.

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Pharmaceutical Studies on Improved Bioavailability of Indoprofen by ${\beta}-Cyclodextrin$ Complexation ( II ) (난용성약물(難溶性藥物)인 Indoprofen의 ${\beta}-Cyclodextrin$복합체(複合體) 형성(形成)에 따른 생체이용률(生體利用率)의 개선(改善)에 관한 약제학적(藥劑學的) 연구(硏究) (제2보)(第二報))

  • Han, Kun;Lee, Min-Hwa;Kim, Shin-Keun
    • Journal of Pharmaceutical Investigation
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    • v.14 no.1
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    • pp.19-30
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    • 1984
  • The pharmaceutical characteristics of solid indoprofen inclusion complex such as dissolution, permeation through a cellophane membrane, model analysis of interfacial tranesfer, absorption behaviors in rat intestine, and the plasma concentration of indoprofen after oral administrations to rabbits were examined in comparison with those indoprofen alone. The inclusion complex obtained by freeze-drying method showed the higher dissolution rate and membrane permeability among the test powders, and increased significantly the amont of indoprofen absorbed in rat intestine and the levels of plasma concentration of indoprofen after oral adminstrations to rabbits. The increase of bioavailability of $indoprofen-{\beta}-cyclodextrin$ complex was considered due to the increased solubility and dissolution rate of solid powder form.

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A Study on the Chest Radiography by Simultaneous Double Radiation Quality (동시(同時) 이선질(二線質)에 의한 Chest Radiography의 연구(硏究))

  • Hayashi, Tare;Ishida, Yuji;Shindo, Koichi;Maeda, Mika
    • Journal of radiological science and technology
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    • v.12 no.1
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    • pp.17-23
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    • 1989
  • We have developed of the exposure technique for the chest radiography to get different contrast in left and right lung fields simultaneously for the effective diagnosis, I.E., get high contrast to detect tuberculosis, dispersal shadow or exudative lesions of early tuberculosis and get better sharpness and wider latitude to detect growing lesions of lung cancer or lesions overlapped with bones. As a result, by using an additional filter Cu 1.2mm with BX-III screen side and sheet of yellow cellophane on BF-III screen side at the conventional KV ($80KV{\sim}100KV$) for the chest X-ray, we can get similar densities in both left and right lung fields and, thus, this method is considered to be very effective for the quality diagnosis for the routine chest radiography.

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