• Journal of Ecology and Environment
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• 제30권2호
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• pp.161-170
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• 2007

The ultimate target of restoring waste landfills is revegetation. The most effective method for increasing species richness and biomass in nutrient limited waste landfills is the use of fertilizers. The aim of the present study was to investigate the effects of nitrogen fertilizer, and the addition of carbon through sawdust, sucrose and litter, on vegetation dynamics at a representative municipal waste landfill in South Korea: Kyongseodong. A total of 288 permanent plots $(0.25m^2)$ were established and treated with nitrogen fertilizer (5, 10 and $20Ng/m^2$), sawdust $(289g/m^2)$ sucrose $(222g/m^2)$ and litter $(222g/m^2)$. The aboveground biomass was significantly enhanced by nitrogen fertilizer at 5 and $10Ng/m^2$, compared with the control plots. The total cover of all plant species increased significantly on plots treated with 5 and $20Ng/m^2$, as well as on those treated with sawdust and sucrose, compared with the control plots. The higher species richness after nitrogen fertilization of 10 to $20Ng/m^2$, and the sawdust and sucrose treatment demonstrated that this was an appropriate restoration option for nutrient deficient waste landfills. This study demonstrated positive nutrient impacts on plant biomass and species richness, despite the fact that municipal waste landfills are ecosystems that are highly disturbed by anthropogenic and internal factors (landfill gas and leachate). Adequate N and C combined treatments will accelerate species succession (higher species richness and perennial increase) for restoration of waste landfills.

• 대한한방소아과학회지
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• 제33권1호
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• pp.58-77
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• 2019

Objectives The purpose of this study is to investigate clinical studies on the effect of acupuncture, moxibustion, and manual therapy in pediatric growth by analyzing randomized controlled trials conducted in China. Methods We searched the clinical studies from the China Academic Journal (CAJ) in China National Knowledge Infrastructure (CNKI) by specific key words and criteria. Selected 31 clinical studies were collected and analyzed. Results Total of 31 randomized controlled trials were selected and analyzed. In most of the studies, the effectiveness of acupuncture, moxibustion, and manual therapy on growth was significantly high. The most commonly used therapies were massage. The most commonly used massage methods were pinching spine (捏脊), pressing and kneading $Z\acute{u}s\bar{a}nl\check{i}$ (按?足三里), supplementing $P\acute{i}j\bar{i}ng$ (補脾經), supplementing $Sh\grave{e}nj\bar{i}ng$ (補腎經), rubbing Abdomen (摩腹), pushing $Y\check{o}ngqu\acute{a}n$ (推涌泉), supplementing $F\grave{e}ij\bar{i}ng$ (補肺經), kneading $T\grave{a}iy\acute{a}ng$ (?太陽), and kneading $Sh\acute{e}nqu\grave{e}$ (?神闕) etc. Conclusions Based on the results of the clinical studies from China, acupuncture, moxibustion, and manual therapy can be a valuable option for pediatric growth.

• 한국대기환경학회지
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• 제20권1호
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• pp.129-138
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• 2004

Determination of some PAHs in ambient air at Ulsan have been carried out by collection of the components into n-hexane followed by synchronous spectrofluorimetric technique. 10 PAHs, such as acenaphthene (Ace), anthracene (Anth), benz[a]anthracene (BaA), benzo[b]fluoranthene (BbFt), benzo[k]fluoranthene (BkFt) benzo[a]pyrene (BaP), chrysene (Chry), phenanthrene (Phen), fluoranthene (Ft), perlyrene (Per), and pyrene (Pyr) in air samples were able to determine separately by synchronous spectrofluorimetry. Calibration curves for those components were linear for the concentration range of 0.2∼166ppb PAHs with the correlation factor of 0.9985∼0.9999. The predominant contribution was phenanthrene which was included 36.9∼85.1% to the overall level of the 10 PAHs in some areas. Also benzo[a]pyrene which was known to carcinogenicity was detected from 6.4 to 55.8ng/㎥, benzo[a]anthracene of some areas was contained from 21.9∼153ng/㎥.

• Environmental Analysis Health and Toxicology
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• 제3권3_4호
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• pp.9-15
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• 1988

The word of stress crime from Latin language as stringere and it was used in medical fields from 1935. According to Selye, all the biological bodies reveal physilolgical changes when some stimulation exceed normal levels, and consequently the pituitary gland and adrenal systems are activated. Jacob expressed that stress is the loss of homeostasis by physical, chemical, and emotional stimulation. When biological organisms receive extreme stress the amount of catecholamine excretion are increase. Author investigated the catecholamine contents in rat urine after giving the low temperature stress, noise stress, and water immersion stress. The 24 hours rat urine was collected by adding 1 ml 6 N-HCl and the sample is passed through Bio-Rex 70 samples treatment column to extract catecholamine and detected the catecholamine with HPLC-fluorescence detetor. The highest epinephrine concentration was 67.14 ng in water immersion stress condition and the dopamine concentration of 221.37 ng was shown in the low temperature stress condition.

• 한국연초학회지
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• 제6권2호
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• pp.191-198
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• 1984

This experiment was conducted to determine Gibberellin content in tobacco leaves at different growth stages in relation to nitrogen levels applied. Some of the results obtained can be summarized as follows: 1. The content of Gibberellin showed an increasing tendency as the levels of nitrogen increased. 2. The highest content of Gibberellin was observed at 60 days after transplanting, showing much higher than those of 30 and 90 days after transplanting. 3. The content of Gibberellin at various growth stages under different nitrogen levels ranged from 0.2490 ng to 10.9308 ng per IKg of fresh leaf weight of Burley 21. 4.The kinds of Gibberellin present in tobacco leaf appeared to be Gibberellinl ,9,19 and 20.

• 분석과학
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• 제8권4호
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• pp.419-425
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• 1995

A method has been investigated for the determination of selenium and tellurium in Ginseng, Ganoderma and Garlic using hydride generation atomic absorption spectrometry(HG-AAS). The concentration effects of hydrochloric acid and sodium tetrahydroborate on the hydride generation for the determination of selenium and tellurium were investigated. The method of sample decomposition was also investigated using various mineral acids, such as nitric, perchloric and sulfuric acid in the closed system, and foreign ion effects containing in the samples were studied. The calibration curves of selenium and tellurium were obtained in the range of 0~40 ppb. The detection limits(S/N=2) of selenium and tellurium are 0.1 and 0.2 ppb. Analytical data of selenium and tellurium in Garlic, Ganoderma and Ginseng are 289, 296 and 198 ng/g for selenium and 146, 127 and 110 ng/g for tellurium, respectively.

• Bulletin of the Korean Chemical Society
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• 제28권4호
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• pp.515-519
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• 2007

Neurotransmitter glycine in the nano gram range was analyzed using a paste electrode (PE) in cyclic voltammetry (CV) and square-wave stripping voltammetry (SWSV). An anodic peak caused by oxidation of the glycine ion appeared at the 0.4 V (versus Ag/AgCl/KCl) potential in a 0.1 M NH4H2PO4 electrolyte solution. At optimized conditions, the working range of the SWSV and CV concentration was found to be 5-60 ngL-1 glycine; precision of R2 = 0.9816 (SWSV) and 0.9986 (CV); and detection limit of 0.65 ngL-1 (5.82 × 10-12 molL-1) (S/N = 3). The optimized conditions were applied to an assay in a fish brain tissue and a living brain cell in real time.

• 약학회지
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• 제60권1호
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• pp.15-20
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• 2016

Globotriaosylsphingosine (lyso Gb3) is considered as one of the biomarkers for Fabry disease. A rapid and simple UPLC-MS/MS method was developed for the determination of reliable biomarker, lyso Gb3. Total analytical procedure takes only 15 min including sample preparation and MS/MS analysis. Limit of detection was 0.85 ng/ml (S/N=3). The calibration curve was linear over the range of 2.0~400.0 ng/ml ($R^2=0.9999$). Inter-day and intra-day assay accuracy were 93.4~100.6% (RSD, 0.6~6.0%) and 97.5~100.7% (RSD, 3.6~5.2%). Absolute recoveries of 97.6~98.6 showed excellence of a new analytical method. The method was applied to human and mice urines, proved the suitability for the quantification of lyso-Gb3 for screening, diagnosis and therapeutic monitoring of Fabry disease patients.

• Journal of Chest Surgery
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• 제48권5호
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• pp.335-344
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• 2015

Background: A raised carcinoembryonic antigen (CEA) may be associated with significant pathology during the postoperative follow-up of lung adenocarcinoma. Methods: We reviewed the medical records of 305 patients who underwent surgical resections for primary lung adenocarcinoma at a single institution between April 2006 and February 2013. Results: Preoperative CEA levels were significantly associated with age, smoking history, pathologic stage including pT (pathologic tumor stge), pN (pathologic nodal stage) and overall pathological stage, tumor size and differentiation, pathologically positive total lymph node, N1 and N2 lymph node, N2 nodal station (0/1/2=1.83/2.94/7.21 ng/mL, p=0.019), and 5-year disease-free survival (0.591 in group with normal preoperative CEA levels vs. 0.40 in group with high preoperative CEA levels, p=0.001). Preoperative CEA levels were significantly higher than postoperative CEA levels (p<0.001, Wilcoxon signed-rank test). Postoperative CEA level was also significantly associated with disease-free survival (p<0.001). A follow-up serum CEA value of >2.57 ng/mL was found to be the appropriate cutoff value for the prediction of cancer recurrence with sensitivity and specificity of 71.4% and 72.3%, respectively. Twenty percent of patients who had recurrence of disease had a CEA level elevated above this cutoff value prior to radiographic evidence of recurrence. Postoperative CEA, pathologic stage, differentiation, vascular invasion, and neoadjuvant therapy were identified as independent predictors of 5-year disease-free survival in a multivariate analysis. Conclusion: The follow-up CEA level can be a useful tool for detecting early recurrence undetected by postoperative imaging studies. The perioperative follow-up CEA levels may be helpful for providing personalized evaluation of lung adenocarcinoma.

• 기술혁신학회지
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• 제15권3호
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• pp.481-499
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• 2012

본 연구는 다음과 같은 분석결과를 제시한다. 먼저 우리나라 10개 산업의 기술생태지형을 결정하는 상호연관관계 K는 9개로 나타났다. 이러한 주성분요인분석결과는 K=N-1의 기술생태지형 구조를 가지고 있음을 보여준다. 둘째, Kauffman NK모형에 따른 우리나라 기술생태지형은 K=N-1인 경우로 다 극점을 존재하는 적응체계로 매우 울퉁불퉁한 기술생태지형을 가지고 있다고 볼 수 있다. 따라서 우리나라의 기술생태계경우에 기술 또는 산업의 수 N이 증가함에 따라서 국소 최적 점의 수는 매우 빠르게 증대할 수 있다. 도출된 분석결과에 따를 경우에 매우 많은 국소 최적 점을 가진 기술생태지형에서 기술탐색과정은 전체 최적 기술조합 또는 기술개발에 효율적으로 도달하기 어려우며, 우리나라 기술생태지형은 매우 복잡한 진화 및 발전체계를 갖고 있음을 의미한다. 본 연구결과의 기술 정책적 시사점은 우리나라 산업간 그리고 기술간에 보다 너무 높은 상호연관성은 기술생태지형에서 효율적이고 창조적 기술개발에 어려움을 수반할 수 있다.