• The Korean Journal of Ecology
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• 제12권1호
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• pp.1-7
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• 1989

낙동강 하구 옥류등에 형성되어 있는 갈대, 천일사초 및 갯잔디 군락의 실소와 린의 동태를 조사하였다. 실소와 린의 흡수량 및 현존량은 식물군락의 물질생산과 단위 무게당 이들 무기영양소의 함량이 달랐다. 실소의 연 흡수량은 갈대, 천일사초, 갯잔디 군락에서 각각 224, 111 그리고 156 kg/ha이었고, 린의 연 흡수량은 각각 22, 29 그리고 21 kg/ha이었다. 염습지의 관속식물 군집은 다량의 질소와 인을 흡수하기 때문에 연안수의 당영양화를 일시적으로 경감시키는 역할을 할 수 있는 것으로 생각되었다.

• The Journal of Korean Physical Therapy
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• 제15권3호
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• pp.91-109
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• 2003

The grip strength is orthopedics department, the place where from rehabilitation medical science and industrial medical science and it evaluates the function of the hand certainly is the ability which is necessary. There is specially by an occupation rehabilitation of mentally retarded child and the evaluation of grip strength is one which is meaning. The samples for this study were 39 normal males and 59 normal females, 62 mentally retarded males, 33 mentally retarded females ranging in age from Prepubeal period to Adolescence. This study was used to measure grip strength BASELINE Hydraulic Hand Dynamometer manufactured by EEI(Fabrication Enterprises Incorporated)in USA. The objective of research from the Prepubeal period to Adolescence the normal and mentally retarded students comparison evaluates the grip strength and effective fine motor program of one's it makes with the fundamental data for a development and it does. The results are as follow : (1) The hand which the normal student and the schoolgirl of rises from grip strength measurement result of the Prepubeal period research object people 10.7Kg with the same left hand was each measured 10Kg with 9.8Kg with in. The grip strength of the mentally retarded schoolboys was the hand which rises 6Kg with the left hand 5.4Kg, the grip strength of the schoolgirls 6.5Kg with was identical. (2) The hand which the normal schoolboys and the schoolgirls rises from grip strength measurement result of the Adolescence research object people 29.6Kg, 20Kg the left hand to be was each measured 27.8Kg with 18.4Kg with. The hand which the mentally retarded schoolboys and the schoolgirls rises 13.1Kg, 11.3Kg the left hand to be was each measured 12.3Kg with 10.9Kg with. (3) Among the normal students $10.2\%$ (Prepubeal period $0.94\%$, Adolescence $15.2\%$) in Mentally Retarded students $17.9\%$ (Prepubeal period $0.77\%$, Adolescence $19.1\%$) left hand it was higher. (4) The grip strength of the students who attend school from the general family dwells were appeared higher than students residence at institution.

• Environmental Analysis Health and Toxicology
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• 제6권3_4호
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• pp.105-121
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• 1991

The object of this study is to investigate the toxicity of fenvalerate [(RS)-$\alpha$-cyano-3 -phonoxybenzyl-(RS)-2-(4-ch1orophenyl)-3-methylbutyrate] and the effect of carbaryl on the toxicity of fenvalerate. Rats were treated with fenvalerate (50 mg/kg, 100 mg/kg), carbaryl (50 mg/kg, 100 mg/kg) or mixtures of the two compounds (fenvalerate+carbaryl: 50 mg/kg+50 mg/kg, 50 mg/kg+100 mg/kg) by oral administration for 1~3 weeks. Control groups were treated with corn oil. The experimental results were summarized as follows. 1. LD$_{50}$ values of fenvalerate and carbaryl in male rats were 385 mg/kg and 625 mg/kg respectively. When 50 mg/kg and 100 mg/kg of carbaryl were administratrd, LD$_{50}$values of fenvalerate were 265 mg/kg and 225 mg/kg respectively. 2. Biochemical parameters such as ALT, LDH and glucose in serum were much more increased in the groups treated with mixture than the groups treated with either one of fenvalerate or carbaryl. 3. The groups treated with carbaryl and mixture for 3 weeks, the contents of cytochrome P-450 in the liver were significantly increased. In renal microsomal fractions, however, no significant changes of drug metabolizing enzyme activities were observed. 4. The activities of aniline hydroxylase in hepatic microsomal fractions were increased in the groups treated with fenvalerate and mixture and activity was much more increased in the groups treated with mixture. 5. The activities of ATPase in the groups treated with fenvalerate were decreased than that of groups treated with mixture. TBA values and the activity of glucose-6 -phosphatase in the liver were not significantly changed. 6. In mixture treated groups, the activities of cholinesterase in serum and in the liver were more decreased than those of carbaryl treated groups. The activities of carboxylesterase in serum in the liver were slightly increased in mixture treated groups, but in fenvalerate treated groups, the activities of carboxylesterase were much more increased than those of control groups. 7. As a result of this study, when carbaryl was as the synergist of fenvalerate, carbaryl inhibited the activities of esterases, so the toxicity of fenvalerate was increased.sed.

• 한국식품과학회지
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• 제42권5호
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• pp.521-526
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• 2010

본 연구에서는 우유에서 플루오르퀴놀론계 합성 항균제의 확인과 정량을 위하여 HPLC를 이용한 방법을 개발하였다. 우유 내 단백질을 제거하기 위하여 삼염화초산을 사용하였고 아세토니트릴로 추출하였다. 그리고 $Strata^{TM}$-X 카트리지로 정제한 후 $C_{18}$ 칼럼을 이용한 HPLC로 분석하였다. 높은 감도를 얻기 위하여 형광 검출기를 사용하였고, 최적파장 Ex: 278 nm, Em: 456 nm에서 분석한 결과 우유 내에서 정량한계와 회수율은 각각 ofloxacin 40 ${\mu}g$/kg, 73.6-95.2%, norfloxacin 10 ${\mu}g$/kg, 77.3-91.9%, ciprofloxacin 20 ${\mu}g$/kg, 91.6-94.3%, enrofloxacin 10 ${\mu}g$/kg, 81.0-87.8%, sarafloxacin 10 ${\mu}g$/kg, 71.3-81.0%, orbifloxacin 10 ${\mu}g$/kg, 89.4-90.8%, danofloxcin 2 ${\mu}g$/kg, 69.4-85.5%이었다.

• 대한한의학방제학회지
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• 제10권2호
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• pp.97-112
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• 2002

In order to investigate the effect of Sagoonja-Tang, Samool-Tang and Yookmijihwang-Tang against the cold, heat and immobilization stress, each formula was injected intragastically to mice exposed to forced cold water swimming($4^{\circ}C$), forced hot water swimming($42^{\circ}C$) and immobilization stress before measuring the change of plasma corticosterone level of mice. The results were as follows: 1. One hour after each Sagoonja-Tang, Samool-Tang, Yookmijihwang-Tang with the dose of 1g／kg, 3g／kg each were administered to mice, we put cold stress($4^{\circ}C$) on mice for 3min. Then those prescriptions didn't show any significant effect on plasma corticosterone level. however, Yookmijihwang-Tang(1g/kg) showed a significant increase(p〈0.05), and Samool-Tang(3g/kg) showed a small increase. 2. One hour after Samool-Tang, Sagoonja-Tang and Yookmijihwang-Tang with the dose of 1g／kg, 3g／kg each were administerd, mice exposed to heat stress($42^{\circ}C$) for 3 min. Samool-Tang(1g/kg) and Yookmijihwang-Tang(lg/kg) showed significant decrease of corticosterone level(p〈0.01, p〈0.05) but Sagoonja-Tang didn't change it. In the case of the dose of 3g/kg, only Samool-Tang decreased corticosterone level(P〈0.01), but Sagoonja-Tang, Yookmijihwang-Tang didn't make significant effect on plasma corticosterone level of the mice exposed to heat stress($42^{\circ}C$ ). 3. Those mice which exposed to immobilization stress one hour after Sagoonja-Tang, Samool-Tang, Yookmijihwang-Tang with the dose of 1g/kg and 3g/kg didn't show effective decrease of corticosterone level. However, Sagoonja-Tang(3g/kg), Samool-Tang(lg/kg, 3g/kg) showed the effect of mild increase of corticosterone level rather than decrease. These data revealed that the effect-variation of prescriptions depended on the kinds of stress and the dose of prescriptions had a different effect on therapy.

• 한국자원식물학회지
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• 제10권4호
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• pp.397-400
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• 1997

두릅나무과에 속하는 다년생 숙근식물인 땅두릅(Aralia cordata Thunb.)의 양질 다수확 재배를 위한 적정 시비수준을 구명하기 위하여 실험을 수행하였던 바 얻어진 결과를 요약하면 다음과 같다. 1. 시비수준에 따른 지상부의 초장은 관행인 17-9-17kg보다 27-15-27kg에서 28.3cm로 생육이 우세하였으며 이러한 경향은 연화장의 결과와 마찬가지로 관행 시비수준이 7.0cm인 것보다 10.3cm로 양호한 결과를 보였다. 2. 지하부의 생육특성중 주근장은 관행시비에서 10.5cm로 처리간에 가장 높은 수치를 보였다. 3. 시비수준에 따른 년차별 건근중은 재배년수가 길어질수록 건근중의 증가를 보였으며 평균적으로 볼 때 관행시비인 17-0-17kg이 272kg인 것과 비교해 보면 27-15-27kg에서 310kg으로 약 14%정도 건근중의 증수효과를 보이는 것으로 나타났다. 4. 땅두릅의 연화재배를 통한 연화장의 엽수량은 관행시비구읜 17-9-17kg에서 391kgdlsrjt 보다 27-15-27kg 시비구에서 415kg으로 나타난 지상부의 건근 수량과 마찬가지로 가장 높은 수익성을 보이는 것으로 나타났다. 5. 이상의 결과를 종합해 볼 때 지상부의 엽수량과 지하부의 건근수량의 양질 다수확 재배를 위해서는 시비수준을 10a당 27-15-27kg으로 시용하는 것이 유리한 것으로 사료되었다.

• 한국수산과학회지
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• 제36권6호
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• pp.743-748
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• 2003

An oil boom was set up in order to contain diffused oil from spills and for the retrenchment of damage caused by oil Pollution. Therefore, the oil boom anchor needed proper holding power to endure high resistance from flowing streams and to secure the oil boom around the spill, and must dredge directly into the seabed when it is dropped and block oil outflow immediately. This study investigated the holding power of the danforth anchor and the coastal fishing vessel anchor used for oil booms in the KMPRC (Korea Marine Pollution Response Corporation). For each type, a 30 kg and 20 kg anchor were used. The holding power of the danforth anchors were measured by dropping both weights 10 times. However the coastal fishing vessel anchors were dropped only 5 times each, because no substantial differences were found between drops. In the results of the danforth anchors, an anchor awoke occurred in 2 drops of the 30 kg anchor and in 4 drops of the 20 kg anchor, wherein there was no holding power to be measured. With exception to the anchor awoke cases, the maximum holding power of the danforth 30 kg and 20 kg anchors was 250-520 kg and 123-233 kg, respectively. In the case of the coastal fishing vessel anchors of 30 kg and 20 kg, throughout the experiment, there was no occurrence of an anchor awoke. For the 30 kg and 20 kg anchors, the maximum holding power was measured to be 209-230 kg and 155-170 kg, respectively. Therefore, the holding power of the coastal fishing vessel anchor was shown to be much poorer than that of the danforth anchor. However, the holding power of the danforth anchor was very unstable. Due to the occurrences of anchor awoke, there was no holding power and the measurement value of maximum holding power showed too much variation among the drop tests. Also, after the maximum holding power was achieved, anchor awoke occurred easily. In the case of the coastal fishing vessel anchor was much more stabile, because there was no anchor awoke and no instance where holding power failed. Also the maximum holding power was reached quickly and almost no variation occurred among the drop tests.

• 혜화의학회지
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• 제8권1호
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• pp.625-641
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• 1999

Aging occurs as a part of maturation as the time progresses which manifests in the human body causing morphological and functional degeneration, eventually leading to death. This experimental study was conducted to investigate a herbal formula to fortify the heart with easy clinical applications. Sungshimsan was chosen to study its effects in heart lipid peroxide and metabolic enzyme system in senescence induced rats. After pre-treatment of Sungshimsan for 2 weeks at the dosage of A (100mg/kg), B (250mg/kg), C (350mg/kg), and D (500mg/kg), a lipid peroxide and metabolic enzyme system changes of the heart were meaured in 32 weeks old rats. The following results were obtained in this study: 1. The contents of lipid peroxide was significantly reduced in the experimental groups treated with greater than 2 weeks at 250mg/kg. 2. The enzymatic activity of cytochrome P-450, cytochrome b5, and NADPH-cytochrome P450 reductase were significantly decreased in the 250mg/kg, 350mg/kg, and 500mg/kg experimental groups. 3. The activity of glutathione and glutathione S-transferase were significantly increased in the 250mg/kg, 350mg/kg, and 500mg/kg experimental groups. 4. The activity of glutathione reductase and glutathione peroxidase were not influenced compared to the control group. 5. The activity of ${\gamma}$-glutamylcystein synthetase was significantly increased in the 250mg/kg, 350mg/kg, and 500mg/kg experimental groups. 6. The activity of enzymes detoxificatioon superoxide dismutase and catalase were not influenced compared to the control group. Summarizing above results suggest that the Sungshimsan has profound effects in the heart lipid peroxide, free radicals, and delaying the heart aging process. Further clinical researches and application can be anticipated on the topic of senility and gerontology.

• 미생물학회지
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• 제28권3호
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• pp.236-242
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• 1990

여러가지 난분해성 방향족 화합물을 분해하는 균주들을 개발하기 위해 2,4-D 분해 유전자를 갖는 재조합 플라스미드 pKG2. 나프탈렌 분해 유전자를 갖는 재조합 플라스미드 pKG3 그리고 TOL 플라스미드를 합성세제 분해능을 갖는 P p pulida KUD12와 프탈산에스테르를 분해하는 P.pUlida KUPlO에 각각 형질전환 또는 접합시켰다. P.pulida KUD12로부터 KUDIOl(pKG2), KUDI02(pKG3). KUDI03(TOL), KUD202(pKG3, TOL) 균주판, 또 P.pulida KUPlO으로부터 KUD 106(pKG2). KUD107(pKG3), KUD108(TOL) 균주을 각각 개발하였다. 개발균주의 분해능은 KUD101과 KUD102 그리고 KUD107이 원분해 균주와 비솟하였고, KUDI03과 KUD106 그리고 K KUD202는 원분해 균주보다 분해능이 떨어졌고 KUD108의 분해능은 원균주보다 우수하였다. 개발균주들의 혼합배양 에서는 KUD 107과 KUD108의 혼합배양이 다른 혼합배양틀보다 분해능이 우수한 것으로 나타났다.

• 한국재료학회지
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• 제21권12호
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• pp.690-696
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• 2011

In this study, nano-sized tin oxide powder with an average particle size of below 50 nm is prepared by the spray pyrolysis process. The influence of air pressure on the properties of the generated powder is examined. Along with the rise of air pressure from $0.1kg/cm^2$ to $3kg/cm^2$, the average size of the droplet-shaped particles decreases, while the particle size distribution becomes more regular. When the air pressure increases from $0.1kg/cm^2$ to $1kg/cm^2$, the average size of the dropletshaped particles, which is around 30-50 nm, shows hardly any change. When the air pressure increases up to $3kg/cm^2$, the average size of the droplet-shaped particles decreases to 30 nm. For the independent generated particles, when the air pressure is at $0.1kg/cm^2$, the average particle size is approximately 100 nm; when the air pressure increases up to $0.5kg/m^2$, the average particle size becomes more than 100 nm, and the surface structure becomes more compact; when the air pressure increases up to $1kg/cm^2$, the surface structure is almost the same as in the case of $0.5kg/cm^2$, and the average particle size is around 80- 100 nm; when the air pressure increases up to $3kg/cm^2$, the surface structure becomes incompact compared to the cases of other air pressures, and the average particle size is around 80-100 nm. Along with the rise of air pressure from $0.1kg/cm^2$ to $0.5kg/cm^2$, the XRD peak intensity slightly decreases, and the specific surface area increases. When the air pressure increases up to $1kg/cm^2$ and $3kg/cm^2$, the XRD peak intensity increases, while the specific surface area also increases.