In this study, an evaluation system that can be used to evaluate the feasibility of developing and supplying hydrothermal energy for the operation of large-scale complex facilities was developed. To this end, this study derived factors to be considered when selecting a location for the use of hydrothermal energy using raw water from multi-purpose dams and regional water supply systems through literature survey and expert interviews. The evaluation indicators derived from this study are divided into four sectors: hydrothermal energy utilization factors, location factors, planning factors, and disaster safety factors, and are composed of 10 mid-level indicators and 34 detailed planning indicators. The relative importance of all factors was derived using the Analytic Hierarchy Process (AHP) technique, and the developed evaluation indicators and relative importance were applied to four multi-purpose dam regions in the country. As a result, it was found that in the development and use of hydrothermal energy utilizing regional raw water supply line the urban planning conditions of the supply site can have a greater impact on the location selection results than the hydrothermal energy development itself. Due to the characteristics of the evaluation indicators developed in this study and their nature as comprehensive indicators, it is believed that the results should be applied to determine the overall adequacy of site selection in the early stages of hydrothermal energy development. In the future, it is believed that it will be necessary to analyze the problems in supplying and operating hydrothermal energy using raw water from multi-purpose dams and regional water resources. Based on the analysis the evaluation system developed in this study is expected to be improved and supplemented.

To clarify the concepts of dialects, vernacular and regional languages used with similar meanings, this study attempted to reveal the usage patterns and concepts of these expressions based on written corpus. The written corpus of printed newspaper articles from the online Naver News Library that archived newspaper articles from 1920 to 1999 and the news article corpus crawled by the online Naver News portal from January 1, 2004 to December 31, 2021 were extracted and analyzed. In particular, this paper analyzed the relationship between collates and keywords based on the corpus linguistic research methodology of the news article corpus for the past eighteen years and how they were being used in official records and press documents by corresponding with the 'dialects, vernacular, and regional languages' in socio-linguistic terms of modern Korean. The results are summarized as follows. First, the concept of linguistic norms that a dialects have terms corresponding to the words or standard languages was established after the 1930s. Second, in the library of newspaper articles published in the 20th century, dialects or vernaculars were perceived as negative objects to be removed in preparation for standard language. Third, it can be seen that the positive value judgment on 'vernacular' has increased in the corpus of news articles over the past decade. Fourth, dialects and vernacular, regional language, and standard language were used to be compatible with each other, and it can been seen that dialects were mainly used in academic contexts and vernacular were mainly used in everyday contexts. Fifth, it can be confirmed that the positive perception of standard language has been maintained in the 20th-century newspaper article corpus and the 21st-century news article corpus for the last eighteen years after the recognition of standard language.

본 연구는 2009년부터 2018년 최근 10년간 대한간호학회지와 분과학회지에 게재된 개념분석 연구의 통합적 문헌고찰 연구이다. 총 30편의 논문을 간호의 메타패러다임, 개념의 종류, 개념분석 방법, 활용정도 등 분석하였다. 결과로 간호의 메타패러다임은 인간 23편, 간호 5편, 건강 1편, 환경 1편으로 인간이 가장 많았으며, 개념의 종류는 모두 추상적인 개념으로 확인되었다. 개념 분석 방법으로는 워커 & 아벤트가 13편, 하이브리드 방법이 10편, 진화론적 방법이 7편으로 워커 & 아벤트 방법이 가장 많았으나 2018년도 이후에는 모두 하이브리드 방법이었다. 도구개발로의 진행은 확인되지 않았다. 연구 결과를 토대로 간호패러다임의 다양성과 이를 바탕으로 한 도구 개발도 필요하다.

Anodic aluminum oxide (AAO) has been widely used for the development and fabrication of nano-powder with various morphologies such as particle, wire, rod, and tube. So far, many researchers have reported about shape control and fabrication of AAO films. However, they have reported on the shape control with different diameter and length of anodic aluminum oxide mainly. We present a combined mild-hard (or hard-mild) anodization to prepare shape-controlled AAO films. Two main parameters which are combination mild-hard (or hard-mild) anodization and run-time of voltage control are applied in this work. The voltages of mild and hard anodization are respectively 40 and 80 V. Anodization was conducted on the aluminum sheet in 0.3 mole oxalic acid at 4oC. AAO films with morphologies of varying interpore distance, branch-shaped pore, diameter-modulated pore and long funnel-shaped pore were fabricated. Those shapes will be able to apply to fabricate novel nano-materials with potential application which is especially a support to prevent volume expansion of inserted active materials, such as metal silicon or tin powder, in lithium ion battery. The silicon powder electrode using an AAO as a support shows outstanding cycle performance as 1003 mAh/g up to 200 cycles.

개량된 MA법으로 합성된 LiFe(PO4)/C에 대해 X-선 회절분석을 실시하여 리트벨트법에 의해 결정학적 연구를 수행하였다. 리트벨트 계산 결과 리트벨트 R 지수 값은 Rp=8.14%, Rwp=11.1%, Rexp=9.09%, RB=3.88%, S (GofF, Goodness of fit) = 1.2으로 계산이 잘 이루어졌음을 알 수 있다. LiFePO4/C는 공간군 Pnma를 가지며, 격자상수 값은 a = 10.3229(3)a, b = 6.0052(2) a, c = 4.6939(1) a이고 체적값은 V = 290.98(1) a3으로 기존 다른 합성법의 연구결과와 잘 일치한다. 분말 입자는 고순도를 가지고 나노 크기(65~90nm)로 기존 MA법보다 상대적으로 미세하고 균질도가 향상되었다. 따라서 개량된 MA법은 상업용 리튬 2차 전지의 양극물질 생산을 위한 우수한 제조법으로 판단된다.

The adsorption of the anionic surfactants, sodium lauryl sulfate (SLS) and sodium dodecylbenzene sulfonate (SDBS) anion surfactants from aqueous solutions with nonionic resins, Amberlite XAD-2, XAD-4 and XAD-7 at temperatures in 15∼45℃ range was studied. Several adsorption isotherm models were used to fit the experimental data. The best results were obtained with the Redlich-Peterson equation and the Freundlich model provided remarkably good fits. For a particular resin at a particular temperature, SDBS was more extensively adsorbed than SLS. The highest adsorption were obtained with XAD-4 resin and the specific surface area of the resins plays a major role in adsorption of the surfactants. Estimations of the isosteric heat of adsorption were indicative of an exothermic process, and their magnitudes manifested a physisorption process.