• Asian-Australasian Journal of Animal Sciences
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• 제27권12호
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• pp.1712-1720
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• 2014

Little is known about the gender differences in energetic requirements of goats in early life. In this study, we determined the energy requirements for maintenance and gain in intact male, castrated male and female Saanen goat kids using the comparative slaughter technique and provide new data on their body composition and energy efficiency. To determine the energy requirements for maintenance, we studied 21 intact males, 15 castrated males and 18 females ($5.0{\pm}0.1kg$ initial body weight (BW) and $23{\pm}5d$ of age) using a split-plot design with the following main factors: three genders (intact males, castrated males, and females) and three dry matter intake levels (ad libitum, 75% and 50% of ad libitum intake). A slaughter group included three kids, one for each nutritional plane, of each gender, and all three animals within a group were slaughtered when the ad libitum kid reached 15 kg in BW. Net energy requirements for gain were obtained for 17 intact males, eight castrated males and 15 females ($5.1{\pm}0.4kg$ BW and $23{\pm}13d$ of age). Animals were fed ad libitum and slaughtered when they reached 5, 10, and 15 kg in BW. A digestion trial was performed with nine kids of each gender to determine digestible energy, metabolizable energy and energy metabolizability of the diet. Our results show no effect of gender on the energy requirements for maintenance and gain, and overall net energy for maintenance was $205.6kJ/kg^{0.75}$ empty body weight gain (EBW) ($170.3kJ/kg^{0.75}$ BW) from 5 to 15 kg BW. Metabolizable energy for maintenance was calculated by iteration, assuming heat production equal to metabolizable energy intake at maintenance, and the result was $294.34kJ/kg^{0.75}$ EBW and $k_m$ of 0.70. As BW increased from 5 to 15 kg for all genders, the net energy required for gain increased from 9.5 to 12.0 kJ/g EBW gain (EWG), and assuming $k_g=0.47$, metabolizable energy for gain ranged from 20.2 to 25.5 kJ/g EWG. Our results indicate that it is not necessary to formulate diets with different energetic content for intact male, castrated male and female Saanen goat kids weighing from 5 to 15 kg.

• 대기
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• 제19권2호
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• pp.183-198
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• 2009

The purpose of this study is to summarize the tropical cyclone (TC) activity of 2008 over the western North Pacific including the verification of the official track and intensity forecast errors of these TCs. The TC activity - frequency, Normalized Typhoon Activity (NTA), and life span - was lower than 58-year (1951-2008) average. 22 tropical cyclones of tropical storm (TS) intensity or higher formed in the western North Pacific and the South China Sea in 2008. The total number is less than 58-year average frequency of 26.4. Out of 22 tropical cyclones, 11 TCs reached typhoon (TY) intensity, while the rest 11 TCs only reached severe tropical storm (STS) and tropical storm (TS) intensity - six STS and five TS storms. One typhoon KALMAEGI (0807) among them affected the Korea peninsula. However, no significant impact - casualty or property damage - was reported. On average of 22 TCs in 2008, the Korea Meteorological Administration (KMA) official track forecast error for 48 hours was 229 km. There was a big challenge for individual cyclones such as 0806 FENGSHEN and 0817 HIGOS presenting significant forecast error, with both intricate tracks and irregular moving speed. The tropical cyclone season in 2008 began in April with the formation of NEOGURI (0801). In May, four TCs formed in the western North Pacific in response to enhanced convective activity. On the other hand, the TC activity was very weak from June to August. It is found that the unusual anti-cyclonic circulation in the lower level and weak convection near the Philippines are dominant during summertime. The convection and atmospheric circulation in the western North Pacific contributed unfavorable condition for TC activity in the 2008 summertime. The 2008 TC activity has continued the below normal state since mid 1990s which is apparent the decadal variability in TC activity.

• Korean Chemical Engineering Research
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• 제55권4호
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• pp.567-573
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• 2017

선박용 경유(황 농도 약 230 ppmw)의 황화합물 제거를 위해 산화텅스텐($WO_x$)을 실리카로 이루어진 다공성 물질인 SBA-15에 담지한 산화 촉매를 제조하였으며 산화제로 과산화수소를 이용한 산화공정과 추출 용매로 아세토니트릴을 이용한 추출공정을 통해 촉매의 산화성능을 확인하였다. XRD 및 XRF, XPS 분석과 BET 이론을 통해 제조한 촉매의 물리적 특성에 대해 조사하였다. 담지된 $WO_x$는 삼산화텅스텐($WO_3$)으로 존재하였으며 실제 담지율이 약 10 wt% 부근일 때 단일층을 형성하는 것으로 판단된다. 제조한 촉매의 산화성능을 확인한 결과, 0.1 g의 13 wt% $WO_x$/SBA-15 촉매와 과산화수소(산소/황 몰 비=10)를 도입하여 $90^{\circ}C$에서 3시간 동안 반응이 이루어졌을 때 76.3%의 가장 높은 황 제거율을 나타냈다. 연속반응 비교 실험을 통해 1회의 산화반응으로 황 화합물의 산화가 충분히 일어났음을 확인하였다. 또한 5회의 추출공정을 통해 최대 94.4%의 황 제거율을 나타냈다.

• 한국전통조경학회지
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• 제31권2호
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• pp.31-42
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• 2013

본 논문은 최근 세계문화유산 등재 추진 중에 있는 서원의 조경 공간 및 그 공간을 구성하고 있는 요소들을 도출한 후 새롭게 도입된 수목에 대한 실태와 유형변화를 규명하고, 등재에 있어서 중요가치인 진정성과 완전성 측면으로 조명하였다. 그 결과는 다음과 같이 요약될 수 있다. 각종 고문헌에서 나타난 수목으로는 복사나무, 매실나무, 버드나무 등 10종이었다. 공간별 식재현황으로는 수종에 따라 어느 정도의 규칙성을 보였는데, 향나무, 배롱나무, 대나무(오죽) 등 3종류는 주로 서원의 본질적 공간(경내)에 위치하고, 느티나무, 버드나무는 주로 서비스 공간(경외)에 위치했다. 공간 구분 없이 위치하는 수종으로는 향나무, 은행나무 등 5종류로 이 수종은 전국 서원에서 가장 많이 나타나는 서원의 대표적 수목이라고 할 수 있다. 유한한 생장력을 가진 식물은 서원의 역사를 증명하는 요소이며, 배향인물(配享人物)이 선호했다는 상징적인 의미가 부여되므로 진정성 측면에 부합한다. 수년간에 걸쳐 수행된 정비사업은 원형을 훼손시켰으며, 철저한 고증을 거치지 않고 무분별하게 식재된 수목으로 인하여 본질적 공간의 존재감을 약화시키는 결과를 낳았다. 따라서 본래 가지고 있던 기능이 변화된 현재의 시점을 반영한 사적의 본 모습을 갖추어 나가 다양한 장소의 역사성을 잘 드러낼 수 있도록 보존해야 할 것이다. 이는 식물을 대상으로 한정된 것으로 향후 건축물 등 공간적 차원에서의 연구가 이루어져 총체적인 공간구성에 대하여 본질적 가치를 판단하는 연구가 계속되어야 할 것이다.

• 한국잡초학회지
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• 제13권2호
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• pp.122-131
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• 1993

벼의 재배양식(栽培樣式)을 관행(慣行)(손)이앙(移秧), 중묘(中苗)(30일묘(日苗))기계이앙(機械移秧), 어린모(10일묘(日苗))기계이앙(機械移秧), 최아종자(催芽種子)의 담수직파(湛水直播) 및 건종자(乾種子)의 건답직파재배(乾畓直播栽培)로 하여 재배양식(栽培樣式) 차이(差異)에 따른 잡초(雜草)의 초종별(草種別) 영양(營養)의 경합특성(競合特性)을 분석(分析)한 결과(結果)는 다음과 같다. 가. 벼와 잡초(雜草)의 시기별(時期別) 양분함량(養分含量) : 관행이앙재배(慣行移秧栽培)에서는 주로 인산(燐酸)은 올방개에서, 마그네슘은 피에서 높은 경향(傾向)이었으며, 중묘기계이앙(中苗機械移秧)에서는 칼륨과 마그네슘이 올방개와 피에서 각각(各各) 높았다. 어린모기계이앙(機械移秧)에서는 질소(窒素)와 칼리가 올방개에서 높고, 마그네슘이 피에서 높은 반면, 벼에서는 대체로 낮은 양상(樣相)이었다. 담수직파(湛水直播)에서는 인산(燐酸)은 알방동사니, 칼리는 올방개, 올쟁고랭이, 알방동사니, 칼슘은 피와 사초과(砂草科) 잡초(雜草), 그리고 마그네슘은 알방동사니에서 높았으며 건답직파(乾畓直播)에서는 질소(窒素), 인산(燐酸)은 올챙고랭이, 칼륨은 올방개, 올챙고랭이, 칼슘은 피와 사초과(砂草科) 잡초(雜草) 등(等)에 의해서 경합해(競合害)를 받는 경향(傾向)이었다. 나. 벼와 잡초(雜草)의 시기별(時期別) 양분흡수량(養分吸收量) : 관행이앙재배(慣行移秧栽培)는 피와 올방개의 영향(影響)을 받아 벼의 질소(窒素), 인산(燐酸), 칼륨 및 칼슘의 흡수량(吸收量)이 억제(抑制)되었고, 중묘기계이앙(中苗機械移秧)에서는 경합(競合)의 영향(影響)이 크지 않게 균형(均衝)을 이루는 양상(樣相)이었고, 어린모 기계이앙(機械移秧)에서는 주로 올방개에 의하여 조사성분(調査成分)이 전체적(全體的)으로 흡수(吸收)가 억제(抑制)되었다. 담수(湛水) 및 건답직파(乾畓直播)에서는 피>올방개>올챙고랭이>알방동사니의 순(順)으로 벼의 전체적(全體的)인 양분흡수(養分吸收)를 유의적(有意的)으로 억제(抑制)하였다.

• Journal of Applied Biological Chemistry
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• 제60권3호
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• pp.227-234
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• 2017

염증성 장 질환에 일반적으로 사용되는 설파살라진은 고용량 및 장기 섭취 후 다양한 부작용이 있다. 본 연구에서는 TNBS로 유발된 마우스 대장염 모델에서 설파살라진, 육계와 시호 복합 추출물의 항염증 및 세포 자멸 개선효과를 확인하고자 하였다. 실험은 정상군, TNBS 대조군, Sulfasalazine (30 mg/kg)군, Sulfasalazine (60 mg/kg)군, Sulfasalazine (30 mg/kg)+육계 및 시호 혼합 (30 mg/kg)군, 총 5개의 군으로 나누었으며, 7일간 경구투여 하였다. 염증 및 세포 자멸 단백질은 western blot을 통해 발현량을 확인하였다. SCB 투여는 염증 단백질 및 세포 자멸과 관련된 단백질의 억제에 유의한 효과를 나타냈다. 이러한 결과로 보아 설파살라진, 육계와 시호 복합 추출물은 염증과 세포 자멸의 억제를 통해 염증성 장 질환을 개선시킬 수 있으며, 염증성 장 질환의 치료 대안 가능 물질로 사료되는 바이다.

• 한국버섯학회지
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• 제10권4호
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• pp.151-159
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• 2012

The button mushroom (Agaricus bisporus) is one of the most widely cultivated important edible mushroom species. In the breeding of new button mushroom, 'Seolgang' was developed by crossing two monokaryons 'CM020913-27' and 'SSU423-31'. Because of the secondarily homothallism, only a small percentage of the basidia produce 3 or 4 spores, which are mostly haploid (n) and do not fruit. Single spore cultures derived from these types of spores produce a vegetative mycelium that also contain a variable number of genetically identical nuclei per cell called monokaryon. The lack of clamp connections between monokaryon and dikaryon required a series of mycelial culture and fruiting test. After crossing, hybrids were cultivated on a small scale and on a commercial scale at a farm. For this, the spawn was made by a commercial spawn producer and the spawned compost by a commercial compost producer. Mycelial growth of 'Seolgang' on CDA was better at $20^{\circ}C$ and $25^{\circ}C$ when it was compared with that of '505 Ho'. The mature cap shape of new strain 'Seolgang' is oblate spheroid and the immature cap shape is round to oblate spheroid. The cap diameter was 41.2 mm on average. In comparison with white strain '505 Ho', the strain had a yield that was 9% higher. It produced fruiting bodies which had a higher weight on average per fruiting body and were 19% firmer with a good shelf life. Days of fruiting body were 3-4 days later than those of '505 Ho'. The physical characteristics such as elasticity, chewiness, adhesiveness were better than that of '505 Ho'. Genetic analysis of the new strain 'Seolgang' showed different profiles compared to '505 Ho', CM02913-27, SSU413-31, when RAPD primers A02 and O04 were used.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제40회 동계학술대회 초록집
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• pp.17-18
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• 2011

Plasma in liquid phase has attracted great attention in the last few years by the wide domain of applications in material processing, decomposition of organic and inorganic chemical compounds and sterilization of water. The plasma in liquid is characterized by three main regions which interact each - other during the plasma operation: the liquid phase, which supply the plasma gas phase with various chemical compounds and ions, the plasma in the gas phase at atmospheric pressure and the interface between these two regions. The most complex region, but extremely interesting from the fundamental, chemical and physical processes which occur here, is the boundary between the liquid phase and the plasma gas phase. In our laboratory, plasma in liquid which behaves as a glow discharge type, is generated by using a bipolar pulsed power supply, with variable pulse width, in the range of 0.5~10 ${\mu}s$ and 10 to 30 kHz repetition rate. Plasma in water and other different solutions was characterized by electrical and optical measurements. Strong emissions of OH and H radicals dominate the optical spectra. Generally water with 500 ${\mu}S/cm$ conductivity has a breakdown voltage around 2 kV, depending on the pulse width and the repetition rate of the power supply. The characteristics of the plasma initiated in ultrapure water between pairs of different materials used for electrodes (W and Ta) were investigated by the time-resolved optical emission and the broad-band absorption spectroscopy. The deexcitation processes of the reactive species formed in the water plasma depend on the electrode material, but have been independent on the polarity of the applied voltage pulses. Recently, Coherent anti-Stokes Raman Spectroscopy method was employed to investigate the chemistry in the liquid phase and at the interface between the gas and the liquid phases of the solution plasma system. The use of the solution plasma allows rapid fabrication of the metal nanoparticles without being necessary the addition of different reducing agents, because plasma in the liquid phase provides a reaction field with a highly excited energy radicals. We successfully synthesized gold nanoparticles using a glow discharge in aqueous solution. Nanoparticles with an average size of less than 10 nm were obtained using chlorauric acid solutions as the metal source. Carbon/Pt hybrid nanostructures have been obtained by treating carbon balls, synthesized in a CVD chamber, with hexachloro- platinum acid in a solution plasma system. The solution plasma was successfully used to remove the template remained after the mesoporous silica synthesis. Surface functionalization of the carbon structures and the silica surface with different chemical groups and nanoparticles, was also performed by processing these materials in the liquid plasma.

• 한국환경농학회지
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• 제33권1호
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• pp.9-16
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• 2014

BACKGROUND: This study was conducted to investigate the effects of seeding timing and method of rye and/or hairy vetch on seasonal soil and foliar nutrient concentrations as well as fruit quality in a pesticide-free pear orchard. METHODS AND RESULTS: The treatments included as followed: single seeding of rye in September (Sep-Mono), November (Nov-Mono), and January (Jan-Mono), or mix seeding of rye+hairy vetch in November (Nov-Mix) and January (Jan-Mix), or sod culture as a control. Cover crops or vegetation was mown and mulched on the soil surface in April and May for two years. Nov-Mix treatment produced the highest dry matter weight of $12,070kg\;ha^{-1}$, with the lowest dry matter weight for sod culture ($6,520kg\;ha^{-1}$), following Jan-Mix ($7,030kg\;ha^{-1}$). Nov-Mix treatments increased potential amount of N, P, and K from the raw materials of the cover crops as well as improved soil physical properties. Nov-Mix treatments overall elevated soil pH, EC, organic matter, and $P_2O_5$ in May compared to other cover crop treatments or sod culture. The difference of the seasonal nutrient concentrations in leaves or fruit qualities were not consistently occurred amongst treatments. CONCLUSION: Nov-Mix treatments showed playing role in a substitute of a chemical fertilizer. Delayed seeding of cover crops such as Jan-Mix did not increase the potential dry matter production due to the short growing period, and the seeding time would affect the dry matter production of cover crops.

• 한국문헌정보학회지
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• 제33권4호
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• pp.17-27
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• 1999

조선조 전기 책판목록에 수록된 간본의 부존본을 조사하고 고증하여 제반 서지사항을 분석 검토하여 보았다. 조선조 전기 책판목록에 수록된 간본은 $\ulcorner$고사촬요$\lrcorner$ 책판목록에 989종과 $\ulcorner$영남책판기$\lrcorner$에서 중복되지 않는 25종을 합하면 모두 1014종이다. 이중 221종은 $\ulcorner$영남책판기$\lrcorner$, 57종은 $\ulcorner$동경잡기$\lrcorner$ 서적조 책판목록의 수록 간본과 각각 중복된다. 그러므로 책판목록에 수록된 간본은 이것을 합하면 모두 1292종이다. 조선조 전기 책판목록에 소재된 전존본은 $\ulcorner$고사촬요$\lrcorner$ 팔도정도 책판목록 117종이다. 이중 33종은 $\ulcorner$영남책판기$\lrcorner$, 10종은 $\ulcorner$동경잡기$\lrcorner$ 서적조의 책판목록에 수록된 간본과 각각 중복된다. 그러므로 책판목록에 수록된 간본의 전존본은 이것을 합하면 모두 160종이 된다. 이 전존본의 현황을 지방별로 살펴보면 강원도 5개 지방 10종, 경상도 17개 지방 55종 전라도 10개 지방 33종 충청도 4개 지방 4종 평안도 2개 지방 9종, 함경도 1개 지방 1종, 황해도 3개 지방 3종이다.