One-step hydrothermal reduction method was used to prepare three-dimensional carbon fiber brush-based graphene–platinum (CFB/Pt–G) composites to improve the electrocatalytic oxygen reduction activity of cathode materials for seawater oxygen-dissolved battery. Characterization results show that the reduced graphene oxide of as-prepared graphene–platinum composite displays the few-layer folded structure. In addition, Pt nanoparticles with the polycrystalline structure dispplay a preferential growth along the crystal plane of (111) and are mainly distributed around the defect cavities of folded graphene. Electrochemical results show that the diffusion-limited current density of CFB/Pt–G composite tested with 1600 rpm/min in 3.5% NaCl solution reaches 5 mA/cm2, while that of CFB/G is only 2.64 mA/cm2. Battery discharge results show that the maximum volume power density of CFB/Pt–G–Mg battery with a stable open voltage of 1.73 V is 81 times as much as the commercial seawater battery SWB1200.

The structural safety of prototype transport and storage containers for very low-level radioactive liquid waste was experimentally estimated for its localization development. Transport containers for radioactive liquid waste have been researched and developed, however, there are no standardized commercial containers for very low-level radioactive waste in Korea. In this study, the structural safety of the designated IP-2 type container capable of transporting and temporarily storing large amounts of very low-level liquid waste, which is generated during the operation and decommissioning of nuclear power plants, was demonstrated. The stacking and drop tests, which were conducted to determine the structural integrity of the container, verified that there was no external leakage of the contents in spite of its structural deformation due to the drop impact. This study shows the effort required for the localization of the technology used in manufacturing transport and storage containers for very low-level radioactive liquid waste, and the additional structural reinforcement of the container in which the commercial intermediate bulk container (IBC) external frame was coupled.

Parthenogenesis is maternally uniparental reproduction through the embryonic development of oocytes without fertilization. Artificial activation of mature oocytes could generate homozygous haploid embryos with the extrusion of the second polar body. However, the haploid embryos showed low embryo development in preimplantation embryos. In this study, we investigated whether the electronic fusion of the haploid embryos could enhance embryo development and ESC establishment in mice. Haploid embryos showed the developmental delay from 4-cell to the blastocyst stage. The haploid blastomeres of the 2-cell stage were fused electronically, resulting in that the fused embryos showed a significantly higher rate of blastocysts compared to non-fused haploid embryos (55% vs. 37%). Further, the embryonic stem cells (ESCs) derived from the fused embryos were confirmed to be diploid. The rate of ESC establishment in fused embryos was significantly higher compared to non-fused ones. Based on the results, we concluded that the electronic fusion of haploid embryos could be efficient to generate homozygous ESCs.

The objective of this study was to verify the effect of pig slurry application with acidification and biochar on feed value, nitrogen use efficiency (NUE) of maize forage, and ammonia (NH3) emission. The four treatments were applied: 1) non-pig slurry (only water as a control, C), 2) only pig slurry application (P), 3) acidified pig slurry application (AP), 4) acidified pig slurry application with biochar (APB). The pig slurry and biochar were applied at a rate of 150 kg N ha-1 and 300 kg ha-1, respectively. The AP and APB treatments enhanced all feed values compared to C and P treatments. The NUE for plant N was significantly increased 92.1% by AP and APB treatment, respectively, compared to the P treatment. On the other hand, feed values were not significantly different between AP and APB treatments. The acidification treatment with/without biochar significantly mitigated NH3 emission compared to the P treatment. The cumulative NH3 emission throughout the period of measurement decreased by 71.4% and 74.8% in the AP and APB treatments. Also, APB treatment reduced ammonia emission by 11.9% compared to AP treatment. The present study clearly showed that acidification and biochar can reduce ammonia emission from pig slurry application, and pig slurry application with acidification and biochar exhibited potential effects in feed value, NUE, and reducing N losses from pig slurry application through reduction of NH3 emission.

공상과학소설(Science-Fiction; 이후 Sci-Fi로 표기)은 미래 세계에 대한 인간의 판타지를 표현하는 장르다. 이는 TV 쇼, 영화, 게임 분야에서 항상 뜨거운 주제였다. Sci-Fi 영화와 Sci-Fi 게임은 대부분 상위권에 오르고 있다. 하지만, 학계에서는 주로 Sci-Fi 영화에서 대한 논의에 더 집중하는 경향이 있다. 예를 들어, <Research on Color Modes of Well-known Contemporary Films(2020)>에 따르면, 최근 몇 년 동안 할리우드 Sci-Fi 영화의 주류 색상은 빨간색과 파란색에서 주황색, 노란색, 파란색, 녹색으로 바뀌었다고 분석하고 있다. 또한, Sci-Fi 영화와 관련된 질적 연구와 연구의 많은 성과가 있었다. 그러나 Sci-Fi 게임의 색조 경향에 대한 연구와 연구 는 매우 부족한 상황이다. 이에 본 논문은 Adams Roberts의 Sci-Fi 소설의 7가지 요소를 사용 한다. 이러한 7 가지 요소에 대한 Metacritic 점수가 사례 선택의 표준으로 사용되었다. 본 연구의 분석 대상으로는<HALO 3>, <Death Stranding>, <Cyberpunk 2077> 등 우수 PC게임 3종이 선정하였다. 또한, 데이터 분석은 NCS 색상 시스템을 기반으로 수행되어 Sci-Fi 게임의 색조 유사성에 대해 논의한다. 마지막으로, 우수한 게임의 색상 적 용에 대한 주요 성향을 결론짓고 요약함으로써, 본 연구는 Sci-Fi 게임의 색상 생산에 대한 몇 가지 이론적 참 조와 기초 데이터를 제공하고자 한다.

By the time the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) entered into force, there had been numerous bilateral and multilateral agreements between the parties regarding its rules on dispute settlement. However, the WTO dispute settlement system currently remains the most requested. The present article provides a comparative analysis of the procedures of dispute settlement under the CPTPP, the WTO DSU, and some RTAs. Among the novelties of the CPTPP mechanism compared to the WTO DSU are that it extends its scope to measures not yet introduced, offers more transparency, including the use of electronic means of communication, simplifies access for third parties, and provides financial compensation as a temporary remedy. Although the authors conclude that many of the CPTPP provisions repeat those of the WTO DSU and other RTAs between the CPTPP partners, there may be a desire to test the CPTPP mechanism in practice due to crises of the WTO Appellate Body.

In this work, the sulfonic acid group was introduced into the resorcinol–formaldehyde (RF) microspheres by the addition of p-phenolsulfonic acid during the polycondensation process of RF. The hydrophilicity of the sulfonated RF allowed KOH to infiltrate inside the microspheres, which enhanced the formation of mesopores in the carbon microspheres during the activation process by KOH. SEM and TEM observations and N2 adsorption measurements verified the formation of abundant mesopores in the porous carbon microspheres. The BET surface area of these mesoporous carbons exceeded 2000 m2/ g. In 17 m NaClO4 “water-in-salt” (WIS) electrolyte-based supercapacitor, the synthesized mesoporous carbon exhibited high specific capacitance of 170 F/g at current density of 0.5 A/g, comparable to those in regular KOH electrolyte. When graphite was used as current collectors, the symmetric cell could operate at 2.5 V, and the mesoporous carbon exhibited an energy density of 43 Wh/kg at power density of 0.25 kW/kg, and 25 Wh/kg at power density of 6.25 kW/kg, respectively, which were superior to those using Pt or stainless steel as current collectors. The mesoporous carbon/graphite was an excellent electrode in new-generation “WIS” electrolyte-based high-voltage supercapacitor due to their high energy and power density.

역사지진과 계기지진 기록에 따르면 한반도 남동부는 우리나라에서 지진활성도가 가장 높게 평가되는 곳으로, 최근에 양산단층대와 울산단층대를 따라 제4기 단층이 다수 보고되어 고지진학적 연구가 활발하게 이루어지고 있다. 특 히 울산단층대의 중부지역에 해당하는 경북 경주시 외동읍 말방리 일원은 울산단층대 내에서 가장 많은 활성단층이 보고된 지역이다. 따라서 이 지역에 대한 고지진학적 특성을 이해하기 위하여 먼저 LiDAR 영상 및 항공사진을 이용한 지형 및 선형구조 분석을 실시하여 단층에 의한 기복으로 추정되는 지형인자를 확인하고, 야외답사와 물리탐사를 통해 단층을 추적하여 기 보고된 말방단층 지점에서 약 300 m 북서쪽에 위치한 곳에서 길이 20 m, 너비 5 m, 깊이 5 m의 굴착조사를 실시하였다. 굴착단면을 통해 분석된 제4기 퇴적층의 특징을 바탕으로 단층의 기하학적·운동학적 특성을 해석하여 고지진학적 특성을 규명하고자 하였다. 이번 굴착단면에서 확인된 역단층의 기하를 보이는 단층의 자세는 N26oW/33oNE로 울산단층대를 따라 분포하는 기 보고된 단층들과 유사하다. 약 40 cm의 단일 겉보기 변위가 인지되었 으나 단층조선의 부재로 실변위는 산출할 수 없었다. 선행연구에서 제안된 극저온구조층의 연대결과 값을 토대로 단층 의 최후기 운동시기는 후기 뷔름빙기 이전으로 추정하였다. 기 보고된 연구결과와 본 굴착단면에서 획득한 단층기하를 종합하여 이 지역에 발달하는 단층계를 인편상구조로 해석하였고, 단층특성을 반영한 모델을 제시하였다. 말방리 일원 에서 수 회의 굴착조사를 비롯한 다수의 선행연구가 수행되었음에도 불구하고 구체적인 단층변수에 대한 정보가 미진 하고 각 지점들 간의 상관성이 명확하게 규명되지 않은 것은 역단층의 복잡한 운동학적 특성에 기인한 것으로 판단된 다. 추후 고지진학적 연구가 추가적으로 수행된다면 상기의 문제점들을 해결하여 종합적인 단층의 형태와 운동사가 규 명될 수 있을 것으로 판단된다.

A 13-year-old mixed dog was referred to the animal medical center, Gyeongsang National University. Lung masses were diagnosed at the left cranial and caudal lobes through diagnostic imaging, and consequently, left pneumonectomy was performed using a self-cutting linear endoscopic stapler. The pulmonary arteries, veins, and bronchus of each lung lobe were sealed and resected at once, and any air leakage or bleeding was not observed after the surgery. Compared to the conventional ligation method, the self-cutting linear endoscopic stapler has the advantage of significantly reducing the operation time and enabling simple and reliable sealing.

A laboratory-scale experiment was conducted to evaluate the effect of supplementing commonly used effective microorganisms on the chemical properties of swine liquid manure. Effective microorganisms used in this study were Bacillus subtilis (1.3×109 colony-forming unit (CFU)/ml), Enterococcus faecium (1.9×1010 CFU/ml), Aspergillus oryzae (2.0×109 CFU/ml), Saccharomyces cerevisiae (6.4×109 CFU/ml), Rhodobacter sphaeroides (1.2×108 CFU/ml), and Streptomyces griseus (6.2×108 CFU/ml). Swine liquid manure collected and decanted from a swine farm was used in this study. Treatments included control (distilled water supplementation), Treatment 1 (T1) (mixed microbes, 109 CFU/ml), and Treatment 2 (T2) (mixed microbes, 107 CFU/ml). Microbial mix was supplemented every 3.5 days and aerated six times (15 min each) a day to facilitate compositing. Ten ml of sample was collected at 2-, 4-, 6-, and 7-week intervals for the measurement of pH, ammonia-N, volatile fatty acid (VFA), total nitrogen, total phosphorus, and total potassium. At seven weeks, samples were further collected to analyze biochemical oxygen demand (BOD) and chemical oxygen demand (COD). Ammonia-N was significantly (p<0.05) decreased in T1 and T2 by 36% and 30%, respectively, compared with control (23%). VFAs including butyrate, iso-butyrate, valerate, iso-valerate, and caproate were not detected in T1 from the four-week aerated sample. The BOD and COD were significantly (p<0.05) decreased in T1 by 96% and 58%, respectively. In conclusion, ammonia-N, VFA, BOD, and COD, known as odor indicators, were decreased in T1 and T2 compared with control, suggesting that effective microorganisms are useful for compositing swine liquid manure

본 연구의 목적은 60대의 대뇌에서 T1, T2, PD 이완 시간 값을 측정하여 연령별 특정 해부학적 구조물들의 이완 시간 의 평균값과 연령에 따른 이완 시간 변화의 관련성이 있는지 분석하고자 하였다. 60에서 69세까지 총 50명의 정상 뇌자기 공명영상검사자의 데이터를 Synthetic MR의 MAGiC을 이용하여 후향적으로 분석하였다. 대상 부위는 해마, 대뇌 부챗살, 측두엽 회백질, 시상, 뇌척수액이었다. 실험결과 해마, 대뇌 부챗살, 측두엽 회백질은 연령 변화에 따른 T1, T2, PD 이완 시간의 차이가 없었다(p>0.05). 하지만 시상에서는 PD 이완시간이 연령과의 상관성이 있었고(R2=0.112, p<0.05), 뇌척 수액에서는 T1 이완시간(R2=0.063, p<0.05)과 T2 이완시간(R2=0.061, p<0.05)에서 연령과의 상관성을 확인하였다. 추후 다양한 연령대의 대뇌 이완 시간을 측정하여 평균값의 비교 연구가 필요하고, 시상과 뇌척수액에서는 대규모 모집단 연구가 필요할 것이라 판단되며 이에 본 연구가 기초자료를 제공할 것이라 사료된다.

뇌 3차원 T1 관상면 검사 시 ENCASE를 적용했을 때 CS 계수의 증가 시 영상획득 시간 변화와 영상의 질의 변화에 따른 유용성에 관하여 알아보고자 한다. 연구 대상은 본원을 내원한 30명의 환자를 대상으로 하였고, 1.5T MRI 장치로 진행하였으며, 24채널 두경부 코일을 사용하였다. 획득한 영상의 상대적신호강도비(rSI)와 상대적대조도비(rC)를 구하였으 며, MIPAV로 뇌실질과 뇌실의 체적을 측정하여 One-way Anova를 사용하여 정량적 분석을 하였고, p<0.05일 때 통계 적으로 유의한 것으로 해석하였다. 또한, 5점 리커트 척도를 이용하여 영상의 질에 대하여 정성적 분석을 하였고, 측정자 내 신뢰도를 확인하기 위해 ICC가 0.75 이상 나오면 측정자간 신뢰성이 높은 것으로 간주하였다. rSI와 rC 모두 p<0.05로 통계적으로 유의미한 차이를 보였고, 급내 상관계수가 0.75이상(p<0.05)으로 통계적으로 매우 높은 신뢰도를 나타냈다. MIPAV를 이용한 체적측정에서는 뇌실질과 뇌실의 체적의 차이는 p=1.000으로 통계학적으로 유의미한 차이는 없었고, 사후분석결과 또한 유의미한 차이를 보이지 않았으며. 급내 상관계수가 0.75이상(p<0.05)으로 통계적으로 매우 높은 신뢰도를 나타냈다. 또한, 정성적 평가에서는 CS 계수가 증가함에 따라 유의미한 차이가 있는 것으로 나타났다(p<0.001). 따라 서 ENCASE 기법을 이용한 3차원 T1 TFE 관상면 검사 시 CS 계수를 증가시킨다면 뇌의 체적 변화 없이 3차원 T1 시상면 영상보다 짧은 150초로 기존의 뇌 3차원 시상면 T1 기본 검사시간 260초 보다 짧은 영상획득 시간으로 진단적 가치가 높은 영상을 제공할 수 있을 것으로 사료된다.

Safe geological disposal of spent nuclear fuel (SNF) requires knowledge of the deep hydrochemical characteristics of the repository site. Here, we conducted a set of deep hydrochemical investigations using a 750-m borehole drilled in a model granite system in Wonju, South Korea. A closed investigation system consisting of a double-packer, Waterra pump, flow cell, and water-quality measurement unit was used for in situ water quality measurements and subsequent groundwater sampling. We managed the drilling water labeled with a fluorescein dye using a recycling system that reuses the water discharged from the borehole. We selected the test depths based on the dye concentrations, outflow water quality parameters, borehole logging, and visual inspection of the rock cores. The groundwater pumped up to the surface flowed into the flow cell, where the in situ water quality parameters were measured, and it was then collected for further laboratory measurements. Atmospheric contact was minimized during the entire process. Before hydrochemical measurements and sample collection, pumping was performed to purge the remnant drilling water. This study on a model borehole can serve as a reference for the future development of deep hydrochemical investigation procedures and techniques for siting processes of SNF repositories.