In this research, a detailed analysis of the decay heat contributions of both actinides and non-actinides (fission fragments) from spent nuclear fuel (SNF) was made after 50 GWd·tHM−1 burnup of fresh uranium fuel with 4.5% enrichment lasted for 1,350 days. The calculations were made for a long storage period of 300 years divided into four sections 1, 10, 100, and 300 years so that we could study the decay heat and physical disposal ratios of radioactive waste in medium- and long-term storage periods. Fresh fuel burnup calculations were made using the code MCNP, while isotopic content and then decay heat were calculated using the built-in stiff equation solver in the MATLAB code. It is noted that only around 12 isotopes contribute more than 90% of the decay heat at all times. It is also noted that the contribution of actinides persists and is the dominant ether despite decreasing decay heat, while the effect of fission products decreases at a very rapid rate after about 40 years of storage.

Many parrots are considered endangered species due to threats from human activities. Gender determination is of great importance for biological studies and the conservation of endangered parrots. However, like other birds, gender determination in parrots is hindered due to the lack of external dimorphism between males and females. A molecular approach using the chromo-helicase-DNA binding protein 1 (CHD1) gene is commonly used for sexing birds. This study aimed to determine the gender of parrots from Korean zoos based on amplification and visualization of the partial CHD1 gene. The samples of 13 parrot species were collected from three different zoos in Korea and the extracted DNA templates were amplified using CHD1 gene primers. The gender of 27 samples of 13 species was determined by visualizing the PCR products on an agarose gel. While male parrots were indicated by a single band, female parrots were indicated by double bands. The findings provide additional information, which might be helpful for the management and care of parrots in Korean zoos.

한국 서남부 농업생태계는 다양한 크기로 분산되어 있는 산림지대가 경작지 사이에 분포되어 있는 형태를 가지고 있다. 이 연구에서는 농업생태계 산림지대에 분포하는 나방 군집과 산림지대에 분포하는 나방 군집을 비교하여 파편화된 농촌 지역 나방 다양성은 산림지대보다 낮지만 생물 이동에 따른 베타 다양성은 더 높을 것으로 예상하였다. 이 연구에 이용한 나방은 종 다양성과 분류학적 정보가 풍부하며, 자외선등을 이용한 정량적 채집이 가능한 분류군이다. 또한 환경변화를 나타내는 지표그룹으로 활발히 이용되고 있으며 기주 특이성이 있어 서식지에 따른 종 구성 차이가 있기 때문에 서식지 유형에 따른 종 구성을 파악하기 적합하다고 여겨진다. 2018년 5월부터 10월까지 한국 서남부 지역인 전라남도 나주시, 무안군, 해남군 등지의 산림과 농촌경관내 산림지역에서 UV등 트랩을 사용하여 나방을 채집하였다. 조사는 농경산림지대와 자연산림지대를 선정한 뒤 나방을 채집하였으며 각 지점별 산림 특성에 따라 다양성 양상을 비교 분석 하였다. 이 연구결과를 토대로 같은 지역에 위치한 나방군집이 경관구조의 이질성에 따라 어떠한 양상을 보이는지 알 수 있을 것으로 예상된다.

Nacre of abalone shell features a “brick-and-mortar” microstructure, in which micro-plates of calcium carbonate are bonded by nanometers-thick layers of chitin and proteins. Due to the microstructure and its unique toughening mechanisms, nacre possesses an excellent combination of specific strength, stiffness and toughness. This study deals with the possibility of using nacre fragments obtained from abalone shell for making a bulletproof armor system. A composite plate laminated with abalone shell fragments is made and compression and bend tests are carried out. In addition, a bulletproof test is performed with hybrid armor systems which are composed of an alumina plate, a composite plate, and aramid woven fabric to verify the ballistic performance of nacre. The compressive strength of the composite plate is around 258.3MPa. The bend strength and modulus of the composite plate decrease according to the plate thickness and are about 149.2MPa and 50.3 GPa, respectively, for a 4.85 mm thick plate. The hybrid armor system with a planar density of 45.2 kg/m2, which is composed of an 8 mm thick alumina plate, a 2.4 mm thick composite plate, and 18 layers of aramid woven fabric, satisfy the NIJ Standard 0101.06 : 2008 Armor Type IV. These results show that a composite plate laminated with abalone shell fragments can be used for a bulletproof armor system as an interlayer between ceramic and fabric to decrease the armor system’s weight.

본 논문에서는 폭발에 의해 생기는 파편의 움직임을 입자계의 내부력을 고려하여 모델링하였다. 입자계의 내부력을 고려하는 이유는 폭발 전후에 입자계 전체의 운동량이 보존되어야 하기 때문이다. 파편의 개수가 수천 개 이상일 경우에는 내부력을 고려하지 않고 난수만을 사용해도 통계적으로 충분히 운동량을 보존시킬 수 있지만 수십 개 이하일 경우에는 통계적으로 더 이상 운동량 보존의 법칙을 만족시킬 수 없다. 이 문제를 해결하기 위하여 입자계의 내부력을 고려한 알고리즘을 제시한다. 이 알고리즘을 사용하면 폭발 후 파편의 개수가 아무리 적어도 운동량 보존 법칙을 만족하게 되어 보다 자연스러운 폭발 장면을 재현할 수 있다.

Adsorption of a water molecule on a Si (001) surface and its dissociation were studied using density functional theory to study the distribution of -OH fragments on the Si surface. The Si (001) surface was composed of Si dimers, which buckle in a zigzag pattern below the order-disorder transition temperature to reduce the surface energy. When a water molecule approached the Si surface, the O atom of the water molecule favored the down-buckled Si atom, and the H atom of the water molecule favored the up-buckled Si atom. This is explained by the attractions between the negatively charged O of the water and the positively charged down-buckled Si atom and between the positively charged H of the water and the negatively charged up-buckled Si atom. Following the adsorption of the first water molecule on the surface, a second water molecule adsorbed on either the inter-dimer or intra-dimer site of the Si dimer. The dipole-dipole interaction of the two adsorbed water molecules led to the formation of the water dimer, and the dissociation of the water molecules occurred easily below the order-disorder transition temperature. Therefore, the 1/2 monolayer of -OH on the water-terminated Si (001) surface shows a regular distribution. The results shed light on the atomic layer deposition process of alternate gate dielectric materials, such as HfO2.

Sperm chromatin integrity is essential for successful fertilization and development of an embryo. Reported here is a quantification of DNA fragments which is intimately associated with reproductive potential to provide one of criteria for sperm chromatin integrity. Three sperm populations were considered: CONTROL (no treatment), UV irradiation (48mW/, 1h) and (oxidative stress induced by hydrogen peroxide, 10 mM, 50 mM and 100 mM). DNA fragments in boar sperm were evaluated by using ligation-mediated quantitative real-time polymerase chain reaction (LM-qPCR) assay, which relies on real-time qPCR to provide a measure of blunt 5' phosphorylated double strand breaks in genomic DNA. The results in agarose gel electrophoresis showed no significant DNA fragmentation and no dose-dependent response to . However, the remarkable difference in shape and position was observed in melting curve of LM-qPCR. This result supported that the melting curve analysis of LM-qPCR presented here, could be more sensitive and accurate than previous DNA fragmentation assay method.

3.3kb 웅성특이 DNA(pEM39 plasmid DNA)가 성 특이 DNA 검색자로 활용되어질 수 있는가를 확인하기 위하여 구조적인 분석을 Southern blotting, DNA sequencing과 computer program 분석을 통하여 실시하였다. 전체 3.3kb에서 유래된 약 1kb 단위의 단편을 이용하여 표지된 짧은 DNA probe들은 Southern blot 분석에서 웅성특이성을 나타내었다. McGraw와 Jeon의 sequence

본 논문에서는 조각구와 우전위 요소들을 도출해 내는데 있어서 저자의 핵어선 분석이 기존의 다른 분석들보다 더 수월하다는 것을 다시 한 번 확인하였다. 특히 논문은 최근 Kim(2017)이 핵어말 구조을 가정하여 제시한 새로운 주장들을 검토해 보고 이들이 타당하지 않다는 것을 밝혔다. Kim의 주장이 주목을 받은 것은 관용 표현을 이용하여 새로운 주장을 내놓았기 때문이다. 즉 공백 우전위 구문에서 우전위 요소는 단일절로부터 이동에 의해 도출되나, 조각구는 제자리 생략에 의해 이동 없이 유도되며 무공백 우전위 구문의 우전위 요소도 이중절에서 제자리 생략에 의해 이동 없이 유도된다는 것이었다. 그러나 이러한 이잘적인 분석들을 더 들여다 본 결과 저자의 핵어선 단일절 분석이 Kim의 문제들을 직면하지 않고 또 논의하는 관용적 의미의 출현과 부재도 일관성 있게 그리고 더 용이하게 다룰 수 있다는 것을 보였다.

스위니 아고니스테스 는 극적 형태에 있어서 T. S. 엘리엇의 첫 번 째 탐구 작업인 바, 대체적으로 실패라고 여겨지고 있다. 그러나 엘리엇 이 이 시를 자신의 시 전집들에 포함시켰다는 사실은 독자들로 하여금 그것의 의미를 그의 작품 전체 속에서 숙고하게 만든다. 그의 초기 작 품들의 명백한 미숙함으로부터의 이탈이 변화나 역전의 신호가 아니라 그의 정서의 확대나 발전이라는 그의 안내를 따라간다면, 이 시는 보통 사람들의 감상주의적인 성향에도 불구하고 보통 사람들의 정서를 변화 시키려는 첫 번째 단계인 것이다. 이 시가 인기가 많았던 마리 로이드 처럼 관객에 대한 정서적 혁명의 영향력을 극대화하는 첫 번째 단계로 의 입문이었기 때문에, 단순히 ‘실패’라기보다는 ‘성공적인 실패’라고 정 의되어야 한다. 이러한 실패의 결과로 이어지는 시극들 전부에서 ‘유머’ 의 어조가 ‘심각함의 어조로 바뀌었다. 하지만 관객의 의식적인 관심을 요구하겠다는 그의 전략의 이러한 변경이 엘리엇의 정서적 혁명의 최종 목표인 공동체의 영적 가치관을 변화시키기에 충분히 좋지는 않았다.

This paper examines multiple Fragmenting in Korean to argue that it can be accounted for in the most effective way by the thesis that Fragmenting applies to cleft structure. We first propose that the underlying structure of the single or multiple fragment answer is the cleft construction where the copula links the subject cleft clause and the pre-copula inferential cleft clause. In deriving its surface structure, the former clause takes the pro strategy in identity with the preceding question sentence, and the latter clause allows survivor(s) to escape out to the periphery of it, which undergoes clausal ellipsis. This conception of the fragment construction sheds new lights on accounting for some peculiar effects of the overt or the covert copula on the immediately preceding Case marker/postposition-less survivor. In addition, this paper provides an explanation for the now celebrated clausemate requirement for the survivors in the construction at issue.

More attention has been paid to fragmental utterances after Merchants (2004). Various ideas have been proposed for fragmental expressions in Korean as well. Ahn and Cho (2006) make a claim that fragments are all syntactically derived with ellipsis whereas Choi and Yoon (2009) propose that there are two different kinds of fragments in Korean: a Case-marked fragment (CMF) and a Caseless fragment (CLF). The latter approach is often called hybrid analysis. This paper is designed to review the so-called hybrid analysis about fragments in Korean and to provide it with a more crucial piece of evidence that Case is obligatory in ki-clausal fragments in Korean. The paper also examines different types of clausal fragments and makes an attempt to answer whether the clausal CMF and CLF have two different structures and what consequences we have with the claim.

Ahn and Cho (2011) suggest that Caseless fragments are just CPs directly dominating nonsentential NPs. The analysis of Caseless fragments in Korean raises non-trivial problems in three phenomena: P-stranding, quantifier scope, and anaphoric binding. Merchant (2004) argues that fragments and their sentential correlates show parallelism with respect to P-stranding. Interestingly, in Korean, P-stranding is allowed in fragments unlike their sentential correlates. We suggest that the apparent P-stranding is a consequence of the existence of Caseless fragments. Regard- ing scope interaction, Caseless fragments yield only wide scope reading with respect to another scope bearing element. We suggest that it is related to the complex structure of quantifiers put forward in Ahn and Cho (2012b). Following this analysis, quantifier fragments are all analyzed in some sense as Case-marked fragments. Hence, argument quantifier and adjunct quanti- fier can display the same scope patterns. With respect to anaphoric binding, we note that Caseless fragments of anaphors show distribution different from their full sentential correlates in both subject and object positions, which may further support our analysis of Caseless fragments in Korean; namely, Caseless fragments are directly generated as XPs without full sentential structures.

Eli이 wrote the unfinished drama, Sweeney Agonistes: Fragments 01 the Aristophanic Me/odrama after The Waste Land and just before bis Christian conversion. He himself put the subtitle of ‘melodrama’ in it in 1932 and later published tbis poem under the group of “Unfinished Poems," which proves the writer’s intricate intention and concerns for this work. In spite of bis thoughtful cODsideratioDs, this work has not much appealed to the public and the scholars as might be expected. This article is to discover the significance of this work as a preparatory step for Eliot’s later works. The survey of tbe experimental strategies of Sweeney Agonistes: Fragments 01 the Aristophanic Me/odrama has revealed an important fact that Eliot wrote this work as an experimenlal ground for Ihe effeclive delivering of his theme to the public. For tbis purpose be has attempted some stylistic aids from both genres, poetη and drama, in this work. Firsl of all, Eliot utilizes the epigrapbs by introducing two representative perspectives on sin and redemption, the heathen Hellenic and the Christian, and implies the themes of his later works would focus on the latter one, that is, the spirilual exploration of Chrislianity. AIso be adopts one of the dramatic devices, the doubleness, whicb is to proceed witb two patterns of life in one work, the superficial daily one and the deep spiritual one, at the same time. Practically, Eliot shows the life of tbe 1920’s American low class in the first fragment of “A Prologue" while the next fragment of “An Agon" presents the under-pattern of the spiritual awakening tbrough tbe main character, Sweeney, with the invilalion of Doris to the he cannibal island to convert her. To use the advantages of the poetic form, EJi이 adopts musicaJ methods such as the jazz accompaniment and the chorus, which not onJy make up the compressed content of the pJay but derive the unconscious, immediate emotionaJ e따cts from the public even in the ignorance of the spirituaJ meaning of death and Iife. EJiot is aJso foJJowing the ruJes of the meJodrama such as the coincidence and the deJaying of the conclusion. In the work, Doris is obsessed by the idea of coincidence about her affairs and this work ends with Sweeney’s mlsslon as a missionary unfulfilled, which should be continually pursued in Eliot's later works.

노화 과정 중에 일어나는 extracellular matrix (ECM)의 변성은 피부의 주름과 탄력 감소를 유발한다. 현재까지 항노화의 주요 타겟은 metalloproteases 혹은 콜라겐이나 엘라스틴같은 구조 단백질에 집중되어 있지만, 최근 세포와 ECM 단백질(콜라겐, 피브릴린, 파이브로넥틴) 간의 상호작용이 세포의 생존과 증식, 조직의 재건에 중요한 역할을 한다고 알려졌다. 파이브로넥틴은 다른 ECM 단백질이나 인테그린 같은 세포 표면 수용체와 결합할 수 있는 부위를 가진 부착 단백질이다. 최근 보고에 따르면 세린 프로티아제들에 의해 분해된 파이프로넥틴 조각이 골아세포에서 MMPs 발현을 증가시킨다. 그러나 파이브로넥틴 조각의 사람 피부에서의 역할은 보고된 바 없다. 본 연구에서는 노인의 피부에서 파이브로넥틴 조각이 현저히 증가되어 있으며, 섬유아세포에 파이브로넥틴 조각을 처리하였을 시, MMP-1의 발현과 MMP-2의 활성이 증가한다는 것을 입증하였다. 이 결과는 파이브로넥틴 조각이 피부 노화를 유발하는 새로운 인자일 가능성을 제시하고 있다.