Understanding the behavior of soil under cyclic loading conditions is essential for assessing its response to seismic events and potential liquefaction. This study investigates the effect of non-plastic fines content (FC) on excess pore pressure generation in medium-density sand-silt mixtures subjected to strain-controlled cyclic direct simple shear (CDSS) tests. The investigation is conducted by analyzing excess pore pressure (EPP) ratios and the number of cycles to liquefaction (Ncyc-liq) under varying shear strain levels and FC values. The study uses Jumunjin sand and silica silt with FC values ranging from 0% to 40% and shear strain levels of 0.1%, 0.2%, 0.5%, and 1.0%. The findings indicate that the EPP ratio increases rapidly during loading cycles, with higher shear strain levels generating more EPP and requiring fewer cycles to reach liquefaction. At 1.0% and 0.5% shear strain levels, FC has a limited effect on Ncyc-liq. However, at a lower shear strain level of 0.2%, increasing FC from 0 to 10% reduces Ncyc-liq from 42 to 27, and as FC increases further, Ncyc-liq also increases. In summary, this study provides valuable insights into the behavior of soil under cyclic loading conditions. It highlights the significance of shear strain levels and FC values in excess pore pressure generation and liquefaction susceptibility.

This study was carried out to investigate the growth characteristics, yield and chemical compositions of whole crop barley (Hordeum vulgare L.) according to mixing ratio of chemical fertilizer (CF) and liquid swine manure (LSM) in the paddy field cultivation. The experimental design was arranged in a randomized block design with five treatments and three replications. The manure fertilizer ratio of five treatments were CF 100% (T1), CF 70% + LSM 30% (T2), CF 50% + LSM 50% (T3), CF 30% + LSM 70% (T4), and LSM 100% (T5) of whole crop barley. At this time, the application of liquid swine manure was based solely on the nitrogen. Plant length was higher at T1 as compared to other treatments (T2, T3, T4 and T5). Fresh yield, dry matter yield and total digestive nutrients (TDN) yield were the highest in T1, whereas the lowest in T5 treatment (p<0.05). Chemical compositions (crude protein, crude fat, neutral detergent fiber, acid detergent fiber and TDN) did not show significant difference among treatments. Ca and Na contents were significantly lower at T1 as compared to other treatments (T2, T3, T4 and T5). However, Mg and P contents were significantly higher at T1 as compared to other treatments(p<0.05). There was no significant difference in total free sugar content among T2, T3, T4 and T5 treatments, but the chemical fertilizer (T1) was significantly lower than the other treatments (p<0.01). Considering the above results, liquid swine manure application showed lower dry matter yield and TDN yield than chemical fertilizer, but higher free sugar content. Therefore, in order to increase the productivity of whole crop barley, it is considered desirable to mix liquid fertilizer with chemical fertilizer, taking into account the decomposition rate and insufficient components (P, K) of the liquid swine manure.

본 실험은 논 토양에서 호밀 재배시 화학비료와 발효 돈분 액 비 혼용 시용이 생육특성 및 영양성분에 미치는 영향을 조사하고 자 실시하였다. 실험설계는 화학비료 100% 처리구(C), 화학비료 70% +돈분액비 30% 처리구(T1), 화학비료 50% +돈분액비 50%처리구(T2), 화학비료 30% +돈분액비 70% 처리구(T3) 그리고 돈분액비 100% 처리구(T4)로 한, 5처리 3반복 난괴법으로 배치 하였다. 이때 돈분 액비 시용은 질소량만을 기준으로 하였다. 초 장은 처리구들 간에 유의적인 차이를 보이지 않았다. 이삭길이, 엽장 및 엽폭은 각각 C, T3 및 T2구에서 각각 높게 나타났다 (p<0.05). 경의 굵기는 T4 > T3 > T2 > T1 > C구 순으로 돈분 액비 시용량이 높을수록 높게 나타났다(p<0.05). 건물수량 및 TDN 수량은 T4구가 가장 높게 나타난 반면 C구가 가장 낮게 나 타났다(p<0.05). 조단백질, NDF, ADF 및 조섬유 함량에서는 처 리구들 간에 유의적인 차이는 나타나지 않았다. 그러나 조지방 및 조회분 함량에 있어서는 각각 T2 및 T3구에서 높게 나타났다 (p<0.05). 총무기물 함량은 돈분액비 시용 비율이 증가할수록 유 의적으로 감소하였다(p<0.05). 그러나 총 유리당 함량은 돈분액 비 시용 비율이 높았던 T3 및 T4구가 높게 나타난 반면 화학비료 처리구(C) 및 돈분액비 시용 비율이 낮은 구(T1)에서는 낮게 나 타났다(p<0.05). 이상의 결과를 종합해 볼 때, 수량성(건물수량, TDN수량)과 사일리지 품질에 영향을 미치는 유리당을 고려한다 면 화학비료와 돈분액비 혼용하거나 돈분액비를 시용하는 것도 효과적이라고 사료된다.

Eco-friendly materials, such as alternative vegan materials using various fungal resources, are being actively researched to reduce environmental pollution and facilitate a healthy lifestyle. The fungal mycelium-based mushroom mycelium mat is one such emerging material. In this study, the commonly used mushroom mycelium culture method was modified to reduce the time required to produce the mycelium mat, lower the possibility of contamination, and improve the properties and quality of the mat. Shortening the period required for the previously used primary bag culture and secondary mat production culture. A culture method in which the bag culture was omitted was attempted using a mycelium mutated by gamma irradiation to the mycelium of Trametes orientalis. In addition, various nutrients were added to the fungal solution to observe the change in physical properties of the fungal mat. High-quality mycelium mats were produced in the experimental group containing 1.5% CaCO3 in sawdust medium, and the period was also reduced by more than 10 days compared to the existing production method. In the future, for mass producing mycelium mats, additional selection of medium components and optimization of culture conditions are essential.

Fen(分°) is the proportional dimension unit of the standard timber section on Yingzaofashi(營造法式), and there is a phrase that not only structural members but the whole structural design of a building also use Fen as the dimension unit on the book. But in fact only the section dimensions of structural members are recorded by Fen, but the design dimensions are recorded by Chi(尺) on the book. Other historical records also described the building size by Chi. So there has been long-standing debate on the phase in Chinese architectural history society, including the recent confrontation on the analysis of survey figures of the east great hall of Foguangsi temple(佛光寺東大殿). This paper analyzes all the records about the size of structural members and section planning on the book to make various calculation and evaluation. And it makes a survey of Cai(材) as the dimension and design unit between Chi and Fen through geometric analysis. Cai might be a rough unit of measurement in terms of structural and proportional scheming on Yingzaofashi, and the full size Cai(足材) had been a building scheming module before the Song dynasty.

바위솔국(Delosperma cooperi)은 레소토(Lesotho)와 남아 프리카 공화국(Republic of South Africa)에 자생하는 다년생 초본성 다육식물의 일종으로 옥상녹화의 재료 및 생체모방 자가복구 소재(biomimetic self-repairing material)의 연구재 료로써 사용되어지고 있다. 뿐만 아니라 지피식물 혹은 실내 관상용 식물로 원예로써도 가치가 있을 것으로 전망된다. 본 연구에서는 바위솔국 재배에 최적화 된 환경을 알아내기 위해 온실의 차광수준[50, 65, 80, 95%, (Under-Bed, 98%)], 분용 토(각각 마사토, 펄라이트, 강모래, 유비상토, 버미큘라이트 가 배합된 토양) 및 시비량[(control, 0ppm), 500, 750, 1,000, 2,000ppm]의 처리로 나누어 실험을 진행하였다. 결과적으로 바위솔국은 50% 차광수준에서 가장 우수한 생육 수준을 나타 냈으며 분용토 실험에서는 유비상토, 버미큘라이트와 펄라이 트가 적절히 혼합된 VL:FM:PL(3:2:5, v/v/v)에서 생육이 가장 우수하게 나타났다. 시비량 실험에서는 1000ppm 수준에서 양 호한 생육을 나타내었다. 바위솔국의 엽색은 65% 이하의 차 광수준에서 짙은 녹색(RHS N137A, 147A)으로 나타났고 80% 이상의 차광수준에서는 엽색이 황색(RHS 146A, 147B, 148A) 으로 평가되었다. 차광수준 실험에서 잎의 CIELAB L*과 b* 값 과 식물체의 생육 간에 상관관계를 분석하였는데 이들은 서로 음의 상관관계를 나타내는 것으로 나타냈으며 일조량이 부족 할수록 잎이 황화 되어 생육이 불량해지는 것과 관계가 있는 것으로 나타났다. 반면에 시비량에 대한 실험에서는 생육과 엽색간 상관관계는 없는 것으로 나타났다.

This study was conducted to determine the effects of dietary protein level and supplementation of protease on growth performance, nutrient digestibility, gut microflora, intestinal morphology and fecal noxious gas emission in weanling pigs. A total of 240 weaned pigs (Landrace×Yorkshire×Duroc, 5.82±0.3 kg) were used during 4 weeks in 2 phases (days 0-14, phase 1; and days 15-28, phase 2) feeding program based on age and initial body weight. Pigs were allocated to 2×2 factorial arrangement, including 2 protein levels (HP, high protein; LP, low protein) and 2 protease levels (with or without protease). The average daily gain in the LP treatment (357 g/d) was increased rather than the HP treatment (339 g/d). A greater avarage daily gain was observed in dietary suppiemented protease treatment (358 vs 339 g/d). Average feed intake was greater in the LP treatment (544 g/d) rather than the HP treatment (530 g/d). A greater average daily feed intake was observed in dietary supplemented protease treatment (552 vs 523 g/d). Dry matter and crude protein digestibility were increased in dietary supplemented protease treatment (82.62% and 76.08%, respectively) rather than non-supplemented treatment (81.74% and 75.13%, respectively). Ileal Lactobacillus spp. count increased in dietary supplemented protease treatment (7.42 vs 7.32 log10CFU/g). Emission of H2S was decreased in the LP treatment (4.41 ppm) rather than HP treatment (4.78 ppm). Emission of NH3 was decreased in dietary supplemented protease treatment (10.43 ppm vs 11.76 ppm). In conclusion, the decrease of dietary protein level and supplementation of protease had beneficial effects on growth performance, nutrient digestibility, gut microflora, and noxious gas emission in weanling pigs.

This study was conducted to assess the effect of acidification of pig slurry on nitrogen (N) mineralization and its environmental impacts during pig slurry fermentation. Different inorganic and organic acids were used to acidify pig slurry. Four treatments including non-acidified pig slurry (control), pig slurry acidified with sulfuric acid, lactic acid, and citric acid were allocated with three replications. The total N content in the acidified pig slurry was higher than non-acidified pig slurry after fermentation. Acidification tended to increase total N content in pig slurry. Ammonium N (NH4 +-N) released from pig slurry was obviously increased at 7 days after incubation, representing 61.4%, 36.8%, and 37.4% increase in the acidified pig slurry with sulfuric acid, lactic acid, and citric acid, respectively. Nitrate N (NO3 --N) in the acidified pig slurry with sulfuric acid was the highest throughout the experiment period, but non-significant effect of organic acid. A large portion of ammonia (NH3) emission occurred within 10 days, corresponding to more than 55% of total NH3 emission. Total cumulative NH3 emission during the experimental period was lower 91% (2.9 mg N kg-1), 78% (7.3 mg N kg-1), and 81% (6.2 mg N kg-1) in the acidified pig slurry with sulfuric acid, lactic acid, and citric acid, respectively, than non-acidified pig slurry (32.7 mg N kg-1). These results suggest that acidification of pig slurry (particularly with sulfuric acid) can be faced as a good strategy to reduce NH3 emission without depressing the mineralization process.

프로문학이 갖는 정치성은 어떤 스펙트럼을 보여줄 수 있을까? 蔣光慈는 기존의 평가(혁명+연애의 클리셰)와는 달리 색다른 소재와 콘셉트를 시도하여 프로문학의 地境을 넓혀간 작가임을 기억할 필요가 있다. 존재의 외연을 확장하는 일. 감정의 파 동이 일어나는, 가장 내밀한 실존으로의 침잠. 이 모순된 방향의 움직임이 蔣光慈의 서사에서는 동시에 포착된다. 蔣光慈는 혁명의 파고를 관통하면서 첨예한 아이덴티티의 ‘경계’를 경험했던 문제적 인물들을 그려낸다. 주류 서사와 비주류 서사가 공존 하는 蔣光慈의 세계는 좌익문학사에서 독특한 위치를 점한다. 무엇보다 혁명의 관습 과 윤리가 힘을 잃는 내면의 깊은 곳, 그곳에서 마주하게 되는 공허함은 혁명 서사의 圖式을 뛰어넘는 어떤 울림을 선사한다. 본고는 그 울림과 함께 ‘이데올로기’를 초월하는 ‘개체’의 존립 가능성을 蔣光慈의 『菊芬』 속에서 탐색해 보고자 한다.

After ethanol (BM-E and RW-E) and hot-water (BM-HW and RW-HW) extracts were fractionated from two herbal mixtures (BM and RW), their physiological activities were investigated. All extracts consisted of more than 50% of neutral sugar, with their total polyphenol levels higher than flavonoid levels. Radical scavenging activities of EtOH extracts remained significantly higher compared to that of hot-water extracts, and in particular, RW-E showed consistently higher antioxidant activity than BM-E. When anti-inflammatory activities of the extracts were evaluated by LPS-stimulated RAW 264.7 cells at 10~500 μg/mL non-cytotoxicity doses, BM-E showed significantly higher levels of TNF-α, IL-1β, IL-6, and nitric oxide inhibitory activity than those of hot-water extracts and RW-E. Murine peritoneal macrophage cells were shown to be enhanced in crude polysaccharides (BM-CP and RW-CP fractionated from BM-HW and RW-HW) compared to hot-water extracts and polysaccharide K (PSK, positive control). Especially, RW-CP exhibited higher activity than BM-CP, and component sugar analysis showed that BM-CP mainly contained galacturonic acid, glucose, arabinose, galactose, and xylose (34.5%, 33.9%, 16.1%, 7.1%, and 6.3%, respectively), whereas RW-CP showed different measurements (29.5%, 59.2%, 5.0%, 4.5%, and 0.2%). In conclusion, two herbal mixtures could contain varying sets of physiological activities dependent on different extraction and fractionation methods.

본 연구에서는 버섯의 건조 및 로스팅 처리의 가공방법에 따른 생리활성 성분과 영양성분의 변화에 대하여 알아보기 위해서 실험을 수행하였다. 항산화 등의 생리활성 성분의 변화를 분석한 결과, DPPH 라디컬 소거능은 잎새 버섯의 열풍건조 시료에서 가장 높았으며, 팽이와 꽃송이 버섯은 가공방법별 유의적인 차이는 없었다. 아질산염 소거능은 꽃송이버섯의 로스팅 시료에서 증가하는 것으로 나타났으며, 팽이와 잎새버섯은 유의적 차이가 없거나 생 시료에 비하여 낮았다. 총 폴리페놀 함량은 팽이와 꽃송이버섯 로스팅 시료가 생버섯(fresh) 시료에 비하여 증가 하는 것으로 나타났다. 아미노산 분석결과, 잎새버섯은 로스팅 처리로 인하여 아미노산 성분들 중 단맛을 담당하는 세린(Ser), 알라닌(Ala)성분들이 증가함과 동시에 쓴맛을 나타내는 류신(Leu), 이소류신(Ile) 성분들은 감소하는 것으로 나타났으며, 팽이와 꽃송이버섯은 필수 아미노산 성분을 포함하여 대부분의 아미노산 성분 함량이 로스팅 처리로 인하여 생시료에 비하여 증가하고 있는 것으로 나타나 로스팅 처리가 버섯내의 영양성분 향상에 효과가 있는 것으로 확인되었다.

본 실험은 광 환경이 자생 Veronica속 4종 구와꼬리풀, 봉래꼬리풀, 부산꼬리풀, 큰구와꼬리풀의 생장 및 개화에 미치는 영향을 구명하기 위해 실시하였다. 이중 봉래꼬리풀은 희귀 및 특산식물로 지정되어 있는 우리나라의 자생식물이며 부산꼬리풀은 우리나라에서도 부산지역에서만 자생하는 특산식물이자 자료부족종으로 분류된다. 실험은 2018년 3월 30일부 터 2018년 8월 17일까지 수행되었으며 Veronica속 4종을 0, 40, 60, 90% 차광환경에서 재배하였다. 구와꼬리풀을 0~60% 차광환경에서 재배시 90% 차광환경에서 재배한 개체보다 지상부의 생체중이 무겁고 엽수 및 가지수가 많아 생장이 유의하게 좋았다. 큰구와꼬리풀의 줄기 두께는 90% 차광환경에서 재배시 유의하게 얇아져 생장이 불량하였다. 구와꼬리풀과 큰구와꼬리풀은 0~60% 환경에서 재배시 모든 개체가 개화하였으며 90% 차광환경에서 재배한 개체보다 개화소요일수가 짧 아졌다. 봉래꼬리풀은 0~40% 차광환경에서 재배시 60~90% 차광환경에서 재배한 개체보다 지상부 및 건물증이 유의하게 증가하여 생육이 좋았으며, 관상가치 측면에서 가장 높은 점수를 받았다. 부산꼬리풀의 관상가치는 0, 40, 60, 90% 차광환경에서 재배시 각각 4.0, 3.0, 2.2, 1.0점으로 조사되어 동일한 Veronica속이라도 종에 따라서 광 민감도가 다양한 것을 확인하였다.

This paper is a review of the construction process, craftsmanship, architectural economy of Bungang Seowon through the Changwon Ilgi(diary). The Bungang Seowon, which was built in the early 18th century, was initially built as a shrine, but was later completed as a seowon upon the decision of the scholars. It was the descendants of Nongam and the Hyanggyo, Seowon, and the government offices that provided economic, human and material support to the construction of Seowon. The small building of Bungang Seowon was run by a civilian carpenter, while the large building was run by a monk carpenter. The mobilization of the building workers was done by local scholars assigning the number of workers needed for each village.

세리아 입자의 합성을 위하여 분무열분해 시 유기 첨가제인 EG(ethylene glycol)과 CA(citric acid)를 첨가하여 중공성 및 다공성을 갖는 CeO2 마이크로 크기의 입자를 제조하였으며 첨가량에 따른 특성을 비교하였다. 분무열분해과정, 후소성 및 볼밀링 과정을 적절히 조합하여 만든 6가지 경로에 의해 나노 크기의 세리아 입자를 합성하였다. 6가지 경로 중 EG 및 CA가 0.05M 첨가된 Ce(III)가 전구체 수용액을 이용하여 분무열분해→후소성→볼밀링→후소성의 경로에 의해 얻어진 CeO2 입자에 대해 TEM 분석으로 측정한 입자의 평균 크기 24 nm(편차=3.8 nm)는 Debye-Scherrer식에 의해 계산된 1차 입자의 크기(20 nm)와 가장 유사한 크기를 나타내었다. 제조된 나노입자분말의 형태적 및 구조적 특성을 알아보기 위하여 SEM(Scanning Electron Microscopy), XRD(X-Ray Diffractometer) 및 TEM(Transmission Electron Microscopy)을 통하여 특성을 분석하였다.

본 연구는 퇴비단 내에서 소리쟁이 종자와 피 종자의 발아력 억제효과를 분석하기 위하여 염소 분 퇴비, 젖소 분 퇴비 그리고 한우 분 퇴비를 대상으로 하여 실험을 수행하였다. 소리쟁이 종자와 피 종자를 거즈에 싸서 퇴비단 내에 묻어놓고 1.5일, 3일, 10일, 20일 경과 후 종자를 회수한 뒤 발아력을 측정하였다. 실험 결과 소리쟁이 종자와 피 종자의 발아율은 가축 분의 종류와 퇴비화 방법에 관계없이 퇴비단의 온도와 직접적인 상관관계를 가지는 것으로 나타났다. 온도가 60∼70°C인 조건의 퇴비단에서 1.5일 동안 머무른 소리쟁이 종자와 피 종자는 발아력을 완전히 상실하였다. 반면에 퇴비단 최고 온도가 51°C 이하인 퇴비단에서는 소리쟁이 종자와 피 종자가 퇴비단 내에서 20일간 머무른 후에도 10 % 정도의 발아력을 유지하였다. 이상의 결과를 종합해보면, 소리쟁이 종자와 피 종자의 발아율을 억제하기 위해서는 가축 분 퇴비화단계에서 최소 55°C 이상의 온도를 3일 이상 유지하는 것이 좋다. 또한 퇴비단 온도가 60∼70°C 정도 상승한다면 약 1.5일 정도 체류하는 것으로도 소리쟁이 종자와 피 종자의 발아력을 억제할 수 있을 것이다. 퇴비화 방법을 기준으로 보면, 호기적 퇴비화 방법이 퇴비단의 온도상승기간이 더 짧았다. 따라서 호기적 퇴비화방법을 적용하는 것이 소리쟁이 종자와 피 종자의 발아력을 억제하는데 더 효율적일 것이다.

In this study, we estimated the applicability of length-weight relationship-based biomass calculations by comparison of body length of genus Polyarthra collected from different habitats. Through the comparison, we also tested availability of representative species-specific biomass value of Polyarthra which is often used without length measurement. Polyarthra samples were collected from rivers (Han River and Nakdong River) and reservoir (Paldang Reservoir), and the body length was measured for statistical comparison among habitats and biomass calculations using different equations suggested previously. According to the results, the body length of Polyarthra spp. was significantly different among sampling sites, and the necessity of body length measurement for rotifer species in each situation has been suggested rather than using the representative biomass values which is fixed without considering time and space. Comparison of suggested biomass calculations based on our measured Polyarthra body length, the equation suggested by McCauley showed more reasonable range of biomass values than that suggested by EPA. In addition, in order to calculate more accurate biomass, it is necessary to measure the body length of rotifers, at least more than 44 individuals to reduce error probability to less than 5% with 99% probability. However, since direct measurement of rotifers biomass is limited, it is considered that further analyses are required for more precise application of rotifer biomass of which has high variability due to complex morphologies and species-specific cyclomorphosis often induced by biotic and abiotic factors in the habitats.

This study evaluated the quality characteristics of wet noodles added with sword bean powder(0, 5, 10, 15%) to determine the most preferred noodle recipe for consumer’s desire. The proximate composition of the sword bean powder was as follows: Moisture contents were 13.4±0.08%, protein 30.2±0.12%, fat 0.3±0.09%, protein 1.0±0.11% and carbohydrates 55.1±0.12%, respectively. Total amino acid content of sword bean powder was measured 23,054.266 mg/ 100 g, especially in the order of histidine, glutamic acid and aspartic acid. The flavonoid content of sword bean powder was 17.9750 mg%. Water-binding capacity increased as the level of sword bean powder increased. When viscosity of wheat flours containing sword bean powder was measured by amylograph, the gelatinization point increased significantly as the level of sword bean powder increased, but peak viscosity decreased. As the level of sword bean powder increased, L value decreased, whereas a and b values increased. Weight, water absorption and volume of cooked noodles prepared with wheat flours containing sword bean powder decreased, whereas turbidity of soup increased. For textural properties, addition of sword bean powder increased hardness, springiness, chewiness of cooked noodles, whereas adhesiveness decreased. According to sensory evaluation such as appearance, color, flavor, taste, texture, overall preference, it was revealed noodles with 10% sword bean powder was the most preferred. According to the results, the addition of sword bean powder positively affects the overall sensory evaluation of wet noodle, and 10% is the optimal level for addition.

Ahn, Ye-rim & Yang, Myung-hee. 2018. “Study on the Expanded Use of the Personal Honorific ‘bun(분)’” The Sociolinguistic Journal of Korea 26(1), 229~250. The aim of this study is to identify the new usages and functions of the personal honorific ‘bun’ in internet communication languages (ICL). To do this, we retrieved all the comments containing the word ‘bun’ that were posted on Twitter throughout the year 2017. The findings of this study are as follows. First, in ICL, ‘bun’ is used not only to represent its original meaning and function; it is also combined with a new form of address that does not carry any personal or honorific connotations. Second, Twitter users use ‘bun’ to refer to any person they are addressing, regardless of social status. Third, ‘bun’ is used in connection with the “fun-seeking”function of ICL. Finally, it is evident that the use of ‘bun’ in ICL has begun to influence everyday language. Wide-ranging studies on changing everyday use of ‘bun’ are needed.