Coagulation/precipitation process has been widely used for the removal of phosphate within domestic wastewater. Although Fe and Al are typical coagulants used for phosphate removal, these have some shortages such as color problem and low sedimentation velocity. In this study, both Fe and Al were used to overcome the shortages caused by using single one, and anionic polymer coagulant was additionally used to enhance sedimentation velocity of the precipitate formed. Batch experiments using a jar test were conducted with real wastewater, which was an effluent of the second sedimentation tank in domestic wastewater treatment plant. Response Surface Methodology was used to examine the responsibility of each parameter on phosphate removal as well as to optimize the dosage of the three coagulants. Economic analysis was also done on the basis of selling prices of the coagulants in the field. Phosphate removal efficiency of Fe(III) was 30% higher than those of Fe(II). Considering chemical price, optimum dosage for achieving residual phosphate concentration below 0.2 mg/L were determined to be 18.14 mg/L of Fe(III), 2.60 mg/L of Al, and 1.64 mg/L of polymer coagulant.

Sewer condition assessment involves the determination of defective points and status of aged sewers by a CCTV inspection according to the standard manual. Therefore, it is important to establish a reliable and effective standard manual for identifying the sewer defect. In this study, analytic reviews of the CCTV inspection manuals of the UK, New Zealand, Canada and South Korea were performed in order to compare the defect codes and the protocols of condition assessment. Through this, we also established the standardized method for defect code and revised the calculation method of assigning the condition grade. Analyses of the types and frequencies of sewer defects that obtained by CCTV inspection of 7000 case results, showed that the joint defect and lateral defect were the most frequent defects that occurred in Korea. Some defect codes are found to be modified because those did not occur at all. This study includes a proposed new sewer defect codes based on sewer characteristics.

국내 교육용 천문대 네 곳과의 협력으로 세 개의 기선을 구축 및 동시 관측을 수행하여, 지구근접천체 Amor족 소행성인 1036 Ganymed의 지심시차와 거리, 운동 상태를 알아보았다. 관측은 2011년 9월에서 11월 동안, 동시 관측이 가능한 날에 이루어졌다. 1036 Ganymed의 거리는 9월 26일 0.40 AU, 10월 11일 0.40 AU, 10월 25일 0.34 AU 이었 고, 각각은 미국 제트추진연구소가 제시하는 측정거리와 비교한 결과 오차 범위내의 값이었다. 1036 Ganymed는 관측 기간 동안 순행 운동을 보였고, 접선 각속력은 0.04-0.05'' sec−1로 측정되었다. 본 연구를 통해 국내에 있는 교육용 천문 대들의 동시 관측으로 0.4 AU 부근의 소행성에 대해 약 5% 정도의 오차 범위를 가지는 거리 측정치를 얻을 수 있음 을 보였다. 이로부터, 교육용 천문대 간의 네트워크를 기반으로 한 협력 관측 수행이 이루어지고 새로운 연구연계 교육 프로그램의 유형으로 활용 될 수 있을 것으로 기대된다.

This study was conducted to evaluate the growth characteristics and dry matter yields of Italian ryegrass (Lolium multiflorum Lam., IRG) cultivars for three years (2011~2013). The cold-resistance of domestic cultivars was stronger than other foreign varieties. Among early-maturing cultivars, dry matter (DM) yield of ‘Kowinearly’ was significantly higher (8,751 kg/ha) than other cultivars (p<0.05). In medium-maturing cultivars, DM yield of ‘Kowinmaster’ and ‘Tam 90’ was 9,394 and 7,461 kg/ha, respectively. Of the two, the former’s DM yield was higher than the latter’s (p<0.05). Among late-maturing cultivars, DM yield of ‘Hwasan 104’ (9,809 kg/ha) was similar to ‘Hwasan 101’ (9,354 kg/ha), but significantly higher than the other late-maturing cultivars (p<0.05). According to the results obtained from present study, early-maturing cultivars with cold-tolerance and high productivity is required for the paddy field cultivation of an Italian ryegrass cultivar after rice harvest in Cheonan region. Medium- and late-maturing cultivars are more advantageous for the dry field cultivation of the maximum quantity that is possible. In conclusion, to select which cultivar/s to grow, the climate of the growing area, weather conditions, and the cropping system must all be considered

사회적 경제란 ‘민주적 의사결정구조를 갖추고, 자본에 따른 수익배분을 제한하는 원칙에 따라 운영되 는 조직들의 활동’을 의미한다. 공정무역(Fair Trade), 지역화폐(LETS), 생활협동조합, 사회적기업, 마을기업 등의 활동들이 사회적경제 활동에 속한다. 사회적경제는 고용문제의 대안적 형태의 일자리를 창출하고 우애의 원칙에 기초한 지역사회 네트워크 구축을 통한 사회적 지지망을 보다 공고하게 만들뿐 아니라 이런 사회적 네트워크 확장을 통해 다른 서비 스의 소비를 촉진하는 기능도 한다는 점에서 중요한 의미를 가진다고 할 수 있다. - 국제사회적경제포럼, http://www.gsef2013.org/ - 사회적경제라는 용어에는 ‘사회적’과 ‘경제’의 두 단어가 함께 사용되며, ‘사회적’이라는 용어는 단순히 특정분야를 뜻하는 것이 아닌 우리주변의 환경이 유기적으로 연결, 결합되어 있다는 의미를 포함하며, ‘경제’라는 용어 또한 다양한 환경과 변수에 의하여 유기적인 결과물을 내는 형태라 할 수 있다. 결국 사회적경제라는 용어의 의미는 어떠한 특정한 분야가 아닌 다양한 주체들이 얽혀 있으며, 특정한 법칙에 의해 일관성 있게 구축되는 것이 아닌 매우 다양한 요인에 집합들에 의해 결과를 예측할 수 없는, 살아있는 생명체로서 접근을 해야 한다고 생각한다. 하지만, 많은 사회복지학회, 포럼, 논문 등을 보면, 다양한 영역을 연결하고 매개하는 중개자로써의 역 할보다는 과거의 연구된 자료를 통해(그것도, 심리학, 철학, 행정학, 경영학 등 많은 분야의) 답습하는 정도의 학문으로써 연구되어지고, 사회적문제에 대한 대안을 현재의 상황보다는 과거의 연구된 근거에 의해 해결하려 한다는 점에서 결정론적인 입장을 취하고 있으며, 현실성이 부족하다는 견해이다. 우리가 살아가는 현재에서는 과거의 사회, 경제의 형태를 찾아볼 수는 있지만, 그것만으로는 충족할 수 없는 매우 많은 정보와 여러 요인에 의해 변화해가는 다양성이 보편화되어 있는 시기이다. 사회적경제란 특별한 프로그램이 되어있거나 특정한 프로세스로 정의되는 형태가 아니며, 과거의 연구 결과 등은 사례로써의 가치를 두고, 현실에서 충분한 시행과 착오를 경험하고, 개선을 통해서 완성되어야 한다. 이 발표문에서는 사회적경제의 사례들의 다양한 비즈니스모델을 컨셉을 살펴보고, 비즈니스의 아이템이나 컨텐츠를 중심적으로 연구하는 것이 아닌 성공과 실패의 사례를 통해서, 사회적경제를 위한 비즈니 스 모델의 방향과 개선점을 찾아보는 것에 의의를 두어야 할 것이다.

This study aimed to discriminate the geographical origins of domestic and chinese Wolfiporia extensa. They were subjected to oxygen (45.32 to 48.07%), carbon (38.09 to 40.12%), hydrogen (6.05 to 6.78%), and nitrogen (0.16 to 0.23%). Antioxidant activity was examined by DPPH free radical scavenging activity. According to the results of the experiment, no significant differences were found between domestic (IC50, 7.25 mg/ml) and Chinese (IC50, 8.35 mg/ml) W. extensa. However, as determined by the inorganic mineral contents were significantly different between domestic and Chinese W. extensa. The amount of potassium in domestic and Chinese W. extensa was and 33.14 ± 17.27%, 47.60 ± 8.78%, respectively. The results of this study suggested that the analysis of inorganic components by ED-XRF should be useful for origin identification of W. extensa

Hot water extracts from 16 domestic edible mushrooms including Pleurotus ferulae (Lanzi) X.L. Mao, Lentinula edodes (Berk.) Pegler, and Hypsizygus marmoreus (Peck) H.E. Bigelow, which are commercially available, were used for determining the cosmetic potential of these mushrooms. In this study, we carried out in vitro functional experiments to determine the inhibitory effects of these extracts on L-DOPA oxidation of tyrosinase and melanin synthesis. Based on the results of these experiments, H. marmoreus (Peck) H.E. Bigelow No. 10 and No. 15 were selected for further analysis. We analyzed the melanin synthesis inhibitory activity, TRP1 and MITF expression via real-time PCR, and Fontana Masson staining in artificial skin Neoderm®-ME. Taken together, we observed that the hot water extract from H. marmoreus (Peck) H.E. Bigelow (No. 15) had better whitening effect than the extracts of other mushrooms. Thus, it can be a potential source of skin-whitening agent

Four fungal species, during indoor air monitoring for fungi that possibly affect the field testing of a newly bred shiitake cultivar in cultivation houses located in Cheongyang, Chungnam Province and Jangheung, Jeonnam Province. Of these species, two are known to be plant pathogens and the other two are saprobes but potent contaminators in the mushroom cultivation environment. This study reports the morphological characteristics and phylogenetic relationships of these four species based on nucleotide sequences of the internal transcribed spacer (ITS) and 18S rDNA region, including their known information.

The risk-based assessment, also called time-based assessment of structure is usually performed to provide seismic risk evaluation of a target structure for its entire life-cycle, e.g. 50 years. The prediction of collapse probability is the estimator in the risk-based assessment. While the risk-based assessment is the key in the performance-based earthquake engineering, its application is very limited because this evaluation method is very expensive in terms of simulation and computational efforts. So the evaluation database for many archetype structures usually serve as representative of the specific system. However, there is no such an assessment performed for building stocks in Korea. Consequently, the performance objective of current building code, KBC is not clear at least in a quantitative way. This shortcoming gives an unresolved issue to insurance industry, socio-economic impact, seismic safety policy in national and local governments. In this study, we evaluate the comprehensive seismic performance of an low-rise residential buildings with discontinuous structural walls, so called piloti-type structure which is commonly found in low-rise domestic building stocks. The collapse probability is obtained using the risk integral of a conditioned collapse capacity function and regression of current hazard curve. Based on this approach it is expected to provide a robust tool to seismic safety policy as well as seismic risk analysis such as Probable Maximum Loss (PML) commonly used in the insurance industry.

Damage potential has been investigated for a domestic metropolitan railway bridge subjected to 2016 Gyeongju earthquake which has been reported as the strongest earthquake in Korea. For this purpose, nonlinear static pushover analyses for the bridge piers have been carried out to evaluate ductility capacities. Then, the capacities have been compared with those suggested by Railway Design Standards of Korea. This comparison shows that all piers possess enough safety margins. Nonlinear dynamic time-history analysis has also been conducted to estimate both displacement and shear force demands for the bridge subjected to ground motions recorded at stations in near of Gyeongju. Maximum demands reveal that response under the ground motions remains essentially in elastic. In addition, for a further assessment of the bridge under the Gyeongju earthquake, fragility analyses have been performed using those ground motions. The fragility results indicate that the recorded earthquakes do not significantly affect the damage exceedance probability of the bridge piers.

The vertical design spectrum for Korea, which is known to belong to an intra-plate region, is developed from the ground motion records of the earthquakes occurred in Korea and overseas intra-plate regions. From the statistical analysis of the vertical response spectra, a mean plus one standard deviation spectrum in lognormal distribution is obtained. Regression analysis is performed on this curve to determine the shape of spectrum including transition periods. The developed design spectrum is valid for the estimation both spectral acceleration and displacement. The ratio of vertical to horizontal response spectrum for each record is calculated. Statistical analysis of the ratios rendered the vertical to horizontal ratio (V/H ratio). Subsequently the ratio between the peak vertical ground acceleration to the horizontal one is obtained.

The design spectrum for Korea, which is known to belong to an intra-plate region, is developed from the ground motion records of the earthquakes occurred in Korea and overseas intra-plate regions. The horizontal spectrum is defined as geometric mean spectrum, GMRotI50. From the statistical analysis of the geometric mean spectra, a mean plus one standard deviation spectrum in lognormal distribution is obtained. Regression analysis is performed on this curve to determine the shape of spectrum including transition periods. The developed design spectrum is valid for the estimation both spectral acceleration and displacement.

Choline is an amine essential to maintenance of good health. Here, we modified the ion chromatographic method for measuring choline described by Laikhtman & Rohrer and validated by the ICH guideline and applied it to monitoring of choline content in infant formula in the Republic of Korea. The Certified Reference Materials (CRM), NIST 1849a, were used for validation of the modified method. The parameters of validation were linearity, range, specificity, accuracy, precision, LOD, LOQ and recovery. The linearity, R2, was above 0.999 and the analytical range was 2.5 to 50 μg/mL. The specificity was confirmed by the retention time (RT) and positive tests with calibration standard and CRM. The accuracy, precision and recovery values were 99.6 ± 2.41 %, 2.42 % and 90.8 - 92.8 %. The LOD and LOQ values were 0.03 mg/kg and 0.17 mg/kg, respectively. Five livestock products inspection agencies voluntarily participated in the collaborative study. The result, HORRAT value was 0.8 which was within the reference value 0.5 – 2.0. The validated method was applied to the analysis of choline in infant formula in the Republic of Korea. The results also conformed to 'The Standard for Livestock Products Labeling'.

Vitamin K1 is a fat-soluble vitamin essential for human health. We used the Association of Official Analytical Chemists(AOAC) method 999.15, validated by the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use(ICH) Guideline, to monitor vitamin K1 content in infant formula in the Republic of Korea. The Certified Reference Materials (CRM), NIST 1849a, were used for validation of the test method. The parameters of validation were linearity, range, specificity, accuracy, precision, LOD, LOQ and recovery. The linearity, R2 was above 0.999 and the analytical range was 0.001 to 0.22 μg/mL. The specificity was confirmed by the retention time (RT) and positive/negative sample test. The accuracy, precision and recovery values were 101.13 ± 0.13 %, 3.15 % and 81.60 % - 99.78 %. The LOD and LOQ values were 0.582 ng/mL and 1.76 ng/mL, respectively. Five livestock products inspection agencies voluntarily participated in the collaborative study. The HORRAT value was 0.6, which was within the reference value 0.5 – 2.0. The validated test method was applied for the monitoring of vitamin K1 in infant formula in the Republic of Korea. The results also conformed to 'The Standard for Livestock Products of Processing and Ingredient Specifications' and 'The Standard for Livestock Products Labeling'.

This article aims to critically examine gender inequality in the domestic labor which is the biggest obstacle to building a gender equal society in the 21st century. Gender inequality in the domestic labor is basically attributable to gender division of labor. Gender division of labor neglects the socioeconomic value of domestic labor, and takes the unpaid domestic labor of women for granted. However, it is unavoidable that this trend cannot continue in an aging and low fertility society. This is because it contradicts to not only the various social systems but also to the basic directions of social policies in an aging and low fertility society. This article reviews the causes and actualities of gender inequality in the domestic labor with a focus on gender

This study was carried out to evaluate the quality characteristics of Korean domestic commercial white wines. Four sample wines were analyzed in terms of their pH, total acidity, volatile acidity, alcohol content, soluble solid, free SO2, total SO2, color, free sugar content, organic acid, volatile compounds, total polyphenol content, DPPH radical scavenging activity and sensory characteristics. The pH of wines ranged from 3.06 to 3.76 and their total acidity from 0.43 to 0.83% (v/v). The alcohol content of samples ranged from 9.4 to 12.8% (v/v) and their soluble solid contents from 9.9 to 12.3 °Brix. The free SO2 and total SO2 contents of the W1 wine were lower than those of the other wines, while the color intensity, a (redness) and b (yellowness) of W1 wine were higher than the values of the other wines. The malic acid contents of the four wines indicated that complete malolactic fermentation (MLF) occurred in W1, incomplete MLF in W3, and was absent in W2 and W4. Aroma analysis resulted in identification of 10 alcohols, 11 esters, 2 ketones and 6 miscellaneous compounds. 2,3-Epoxybutane and 1-(ethenyloxy)-pentane levels in were significantly higher W1 than the other wines, while several types of ester predominated in W2, W3 and W4. W1 had the lowest sensory score among the four wines. Therefore, the quality characteristics of domestic white wines are considered to be acceptable.

경주 중·저준위 방사성폐기물 처분시설의 운영에 따라, 한국원자력연구원(대전)에 임시보관 중인 방사성동위원소폐기물 을 처분시설로 육상운반하였다. 본 연구에서는 방사성동위원소폐기물의 국내육상운반에 따른 작업자 및 일반인에 대한 방 사선 피폭선량을 평가하고 그 결과를 국내 방사선피폭 법적제한치와 비교하였다. 또한 방사성폐기물의 상하차 작업 시 작업 자와 드럼 간 거리 및 방사성핵종 누출율의 변화에 따른 예상피폭선량의 민감도를 분석하였다. 정상 및 사고조건에서의 예 상피폭선량은 국내 법적제한치를 충분히 만족하였음을 확인하였다.

세계적으로 자유무역협정(FTA), TTP (Trans- Pacific Partnership) 등의 국제 무역협정이 빠르 게 확산되는 가운데 독자적인 기술보다는 전 세계 적으로 통용되는 표준 기술에 대한 수요가 증가하 고 있으며, 산업 경쟁력을 확보하려면 국제표준의 선점은 필수가 되고 있다. 이에 따라 표준특허의 개발을 둘러싼 각국의 경쟁이 갈수록 치열해지고 있다. 표준특허 또한 기본적으로 특허의 기본원칙에 따라 독점배타권을 가지나, 표준특허는 특성상 침 해가 불가피하고, 기술의 상용화를 통한 보급과 활용이라는 측면에서 표준화 단체의 FRAND 정 책에 따라 표준특허는 그 배타권이 제한되고, 표 준기술을 누구나 공평하게 사용할 수 있는 공익적 인 기능이 보장된다. 이에 따라 표준특허권은 필 연적으로 각국의 경쟁법 또는 독점규제법과 연관 될 수밖에 없으며, 표준특허권자의 침해금지청구 (prohibitory injunction)권 행사가 경쟁법 또는 독점금지법에서 금지하는 시장지배적 지위의 남 용이 아닌지 여부에 관해서 각국에서 견해가 대립 되고 있다. 이번 Huawei v. ZTE 사건에서의 사법재판소 의 판결은 표준특허권자의 권리 제한의 근거를 TFEU 102조 및 표준특허권자에 의한 FRAND 선언에서 찾고 있으며, 표준특허의 소유자가 FRAND 라이선스 조건이 비차별적인지 등의 여 부를 판단하는데 필요한 정보의 접근성에 있어서 침해자보다 더 유리한 위치에 있다고 보아, 침해자 가 단순히 라이선스 의사만 표현한 경우에도 표준 특허 소유자에게 구체적인 조건을 제시하여 더 적 극적으로 라이선스 합의를 도출할 의무를 부여하 고 있다. 또한, 기존과 달리 침해자가 라이선스 합 의 의사와 별개로 특허의 표준특허 여부 및 유효성 에 대하여 보다 자유롭게 다툴 수 있게 되었다. 이번 유럽 사법재판소의 판결은 표준특허권 자의 침해금지청구권 등의 권리행사가 경쟁법 TFEU 102조에 따른 시장지배적 지위의 남용에 해당하는지 여부에 대하여 유럽 차원의 통일적 해 석 기준을 제시하는 점에서 당사자들에게 예견가능성을 부여하고, 이를 통하여 사회 경제적 분쟁 비용을 완화시키며, 표준화의 효율성 증대 효과를 높일 수 있게 하였다. 상기 유럽 사법재판소의 판결은 표준특허권자 의 침해금지청구가 어떤 경우에 시장지배적 지위 의 남용에 해당하는지에 관하여 국내 심사지침에 서 참조할 수 있는 명확하고 구체적인 기준을 제 시하고 있다는 점에서 의의가 있다. 국내 심사지 침에서 표준특허권에 기반한 침해금지청구권을 행사하기 전에 당사자들이 지켜야 할 절차 및 기 준이 모호한 현 상황에서, 상기 유럽 사법재판소 에서 제시한 절차 및 기준을 참조하여 국내 심사 지침을 정비한다면, 침해금지청구권을 행사하기 전에 당사자들이 지켜야 할 절차 및 기준을 보다 명확하게 하여서, 당사자들에게 예견가능성을 부 여하고, 사회 경제적 분쟁 비용을 완화시킬 수 있 을 것이다.