• Korean Journal of Heritage: History & Science
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• v.52 no.4
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• pp.124-141
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• 2019

This research explored the relationship between the water quality issue of Wolji Pond (Anapji Pond) with the maintenance of the channel flow circulation system. The water supply and drainage system closely related to the circulation system of pond has been reviewed, rather than the existing water supply and drainage system that has been analyzed in previous studies. As a result of reviewing the water supply system, it has been learned that the water supply system on the southeastern shore of Wolji Pond, being the current water supply hole, has been connected to the east side garden facility (landscaping stone, curved waterway, storage facility of water) between the north and south fence and the waterway. This separate facility group seems to have been a subject of the investigation of the eastern side of Wolji Pond, with the landscaping stones having been identified in the 1920's survey drawings. The water supply facility on the southeastern shore, being the suspected water supply hole, seems to have some connection with the granite waterway remaining on the building site of Imhaejeon (臨海殿) on the southern side of Wolji Pond. It is inferred that it provides clean water, seeing that the slope towards the southwestern shore of Wolji Pond becomes lower, the landscaping stones have been placed in the filter area, and it is present in the 1920's survey drawings and the water supply hole survey drawing of 1975. The water drainage facility on the northern shore is composed of five stages. The functions of the wooden waterway and the rectangular stone water catchment facility seem not to be only for the water drainage of Wolji Pond. In light of the points that there are wood plugs in the wooden waterway and that there is a water catchment facility in the final stage, it is judged that the water of Balcheon Stream (撥川) may be charged in reverse according to this setup. Namely, the water could enter and exit in either direction in the water drainage facility on the northern shore It also seems that the supply to the wooden waterway could be opened and shut through the water catchment facility of rectangular stone group as well. The water drainage facility on the western shore is very similar to the water drainage facility on the northern shore, so it is difficult to avoid the belief that it existed during the Silla Dynasty, or it has been produced by imitating the water drainage facility on the northern shore at some future point in time. It seems to have functioned as the water drainage facility for the supply of agricultural water during the Joseon Dynasty. The water supply and drainage facilities in Wolji Pond have been understood as a systematized distribution network that has been intertwined organically with the facility of Donggung Palace, which was the center of the Silla capital. Water has been supplied to each facility group, including Wolji Pond, through this structure; it includes the drainage system connecting to the Namcheon River (南川) through the Balcheon Stream, which was an important canal of the capital center.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.12
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• pp.4935-4944
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• 2010

The purpose of this study was to investigate the perceived difficulties during both pre-treatment period and admission period for radioactive iodine therapy (RAIT), the level of information about RAIT provided by medical staffs and the satisfaction of RAIT process in thyroid cancer patients receiving RAIT. Participants were 165 thyroid cancer patients, who had total thyroidectomy and had been offered RAIT. The data were collected using structured questionnaire and open-ended questions and analyzed by descriptive statistics and content analysis. The most frequent perceived difficulties of RAIT was associated with thyroid specific symptoms during both pre-RAIT period and RAIT admission period(38.2% vs 43.0%). The rating of RAIT information provided by medical staffs was evaluated as over moderate level(mean $3.63{\pm}0.80$). The RAIT process satisfaction was investigated as moderate level(mean $6.43{\pm}2.21$). the satisfaction of RAIT was the highest in medical attention and coping procedure (mean $7.64{\pm}2.37$) however it was the lowest in adequacy of RAIT information(mean $5.67{\pm}2.78$). Thus the nursing intervention program for thyroid cancer patient undergoing RAIT should be developed to support needs of thyroid cancer patients related to thyroid specific symptoms and to improve patients' understanding about RAIT procedure so that patients have competence to participate in therapeutic activities efficiently.

• Korean Journal of Heritage: History & Science
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• v.55 no.2
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• pp.6-21
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• 2022

This paper examines the material culture of the Goryeo-Joseon Period through changes in the design and crafting of the earpick. In Chapter 2, terminology regarding earpicks is presented, and the culture of using earpicks is examined through fragmentary literature of the late Joseon Dynasty. Earpicks were first a personal hygiene tool, and, secondly, they played a symbolic role as a style accessory used by men, analogous to the fan carried by women of the time. In Chapter 3, earpick form are classified by period, and characteristic decorative techniques for each form are examined. During the Goryeo Dynasty, earpicks were sanitary tools, and, according to their form, they were classified into single and complex types. From Unified Silla to Goryeo, there is an angled type of connecting rod, and in the Goryeo period, there appeared earpicks with colorful decorations on the handle, completely forged earpicks with a thin and long shape, and earpicks which were part of multitools. Common decorative techniques include line expression, gold plating, cheophomun on the background, and inlay. Earpicks of the Joseon Dynasty are classified into sanitary tools or ornaments, according to their purpose of use. Sanitary tools are divided into single type and complex type, and earpicks used as ornaments include headdress, norigae, and sunchu. For earpick accessories, headdresses and norigae were used for women, and sunchu was used for men. The decorative techniques of earpicks during the Joseon Dynasty were mainly seen in the headdress earpicks. They were decorated with various colors in the Cloisonné method or bejeweled. Research on everyday tools among crafts is lacking; greater attempts to read the flow of time and approaches to material culture through everyday tools should be made.

• Journal of Life Science
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• v.27 no.8
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• pp.896-901
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• 2017

This study was performed to investigate the protective effects of succinic acid of Succiniter against carbon tetrachloride ($CCl_4$)-induced hepatotoxicity in rats. After an adaptation period of one week, Sprague-Dawley rats were administered succinic acid of Succiniter at 200 mg/kg every day for 21 days. Then $CCl_4$ (3.3 ml/kg) was intraperitoneally injected into rats of the other groups except the normal group, five hours after the last treatment of succinic acid of Succiniter on day 21. The succinic acid-treated group showed 93.20% and 88.76% of inhibitory effects in aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities, respectively, compared with the $CCl_4-treated$ group. The succinic acid-treated group showed inhibition of malonedialdehyde (MDA) by 85.17% compared with the $CCl_4-treated$ group. The succinic acid-treated group in liver homogenate promoted effects of 38.65% and 47.99% in superoxide dismutase (SOD) and catalase (CAT), respectively, compared with the $CCl_4-treated$ group. In conclusion, the AST and ALT activities of the succinic acid-treated group were both decreased compared with the $CCl_4-treated$ group. The MDA level of the succinic acid-treated group was decreased compared with the $CCl_4-treated$ group. However, the SOD and CAT levels of the succinic acid-treated group in liver homogenate were both increased compared with the $CCl_4-treated$ group. Also, histological examinations showed that the liver cell necrosis and centrilobular congestion aggregation induced by $CCl_4$ were clearly eliminated by treatment with succinic acid of Succiniter. These results suggest that succinic acid of Succiniter has a protective effect against liver damage and could be used in the development of the appropriate drug.

• Journal of the Korean Society of Costume
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• v.61 no.4
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• pp.117-137
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• 2011

This study analyzed historical records on silk tabby-ju(細), Si(總)- in a diachronic and spatial point of view. The historical records were written in Samguksagi(三國史記) of Korea, Eastern barbarian[東弟] section of Ershiwush(二十五史) of China and Ritkokusi(六國史)of Japan from the $4^{th}$ century to the early $10^{th}$ century. The study finally could reach the conclusions as follow. Firstly, records that fabrics like Ju were used were found in the Korean historical documents written on Balhae(渤海) of the $8^{th}$ century and Sllla(新羅) of the $9^{th}$ century. On the other hand, no official record on production of fabrics like Ju was found in the Japanese historical documents up to the $10^{th}$ century. Instead, there are some records that Si was produced and used for the first time in the $7^{th}$ century and it was rapidly spread in the $8^{th}$ century. In the $9^{th}$ century, the number of records on Si was sharply decreased and the importance of Si in the foreign-relation point of view also went down gradually. Secondly, records on using and trading with both Ju(細) and Si(總)in the foreign relation of two countries were shown from the $8^{th}$ century to the $9^{th}$ century. In the period, international exchange had been promoted among Balhae, Silla and ancient Japan. In the $9^{th}$ century, fabrics like Ju of ancient Korea was introduced to ancient Japan ancient Japanese people could not manufacture Ju by themselves at that time. On this account, we assumed that ancient Japanese people might consider Ju as high quality fabric rather than Si that had been used as general fabric. Meanwhile, it is found that Japan presented various kinds of Si to Balhae and Silla from the early $8^{th}$ century. As the foreign relation between Sllia and ancient Japan got weaker in the mid-$8^{th}$ century, frequency and amount of supplying Si to Balhae were relatively increased. Besides Si, Balhae was given a lot of silk yarn and floss. These fabrics presumably were used as raw material of Ju in Balhae because Balhae got low output of silk due to its geographical condition.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.603-612
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• 2012

When it comes to a country's traditional ideas. that country's geographic setting and religious thought show the people's consciousness, and the characteristics of historic sites and relics show their cultural aspects. Our country has 5000-year cultural history. Especially, the Baekje cultural history created very remarkable relics in our history. With regard to Baekje's own patterns and workmanship, their ornaments were more focused on the beauty of soft and voluptuous curves than that of Goguryeo and Silla This study researched design characteristics of ornaments and symbolic aspects of the patterns by focusing on crowns, crowns' accessories, earrings, necklaces, chignon ornaments of the Baekje's ornaments, To put emphasis on Baekje's ornaments by comparing Baekje's ornaments with Goguryeo's and Silla's. This study collected data on Baekje's ornaments, and reviewed domestic references and specialty publications at the Buyeo National Museum, Gong-ju National Museum, home and abroad, and studied the images of Baekje's metal crafts and patterns through theses. Baekje had splendid and glorious artistic culture, but there are not many historical data and supportive relics left these days. Therefore, a lot of attention, researches and development on Baekje culture are needed. This study found that the ornaments of the Baekje era have not only ornament functions but also the people's creative mind. The culture contents in recent technological development and industrialization change people's recognition, and now they have interest in Baekje culture. Therefore, the purpose of this study is to widely popularize Baekje by studying the patterns of the Baekje era more and developing various and new designs.

• Korean Journal of Heritage: History & Science
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• v.54 no.3
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• pp.204-227
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• 2021

This paper proposed the validity and necessity of establishing the Jungwon Historical and Cultural Area by reviewing the historical characteristics of the name Jungwon and its temporal and spatial range. We also explored ways to utilize the Jungwon historical and cultural Area under the Special Act on the Maintenance of Historical and Cultural Areas. Jungwon, which means the center of the country, has strategic value as a key area connecting the Korean Peninsula to the north and south through the Geripryeong and Jukryeong. It also includes Chungju, which connects the Namhan and Bukhan Rivers . From the Mahan period, the areas of Cheongju and Jincheon, the Miho Stream basin to the west, and Chungju to the east were closely connected to each other. Afterwards, Baekje, Koguryo, and Silla engaged in a fierce battle to occupy the Jungwon area. Jungwon culture was born through the negotiation and fusion of the cultures of the three kingdoms. In particular, Silla continued to value the Jungwon area, demonstrated by the installation of Seowongyeong in Cheongju and Bukwongyeong in Wonju, centering on the Jungwongyeong. Since we have a historical view with a focus on ancient kingdoms, we have overlooked the full value of the history and culture of Jungwon. We need to recognize the importance of Jungwon area and think about how to utilize it. Therefore, we suggested in this paper that there be more public information services on the cultural heritage of Jungwon, the historical heritage experience, and the education programs for local residents. The development and operation of Jungwon's history, culture, and tourism contents, as well as the various academic research papers should be used to reveal the identity of the Jungwon historical and cultural area.

• Applied Chemistry for Engineering
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• v.22 no.3
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• pp.301-307
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• 2011

Optimal culture conditions of Spirulina platensis NIES 39 have been established using different types of light sources. Several types of photobioreactors were designed and the increase of biomass, the amount of $CO_2$, fixation and the production of chlorophyll content were studied. The result revealed that the input conditions of a 10 min period per 4 h at the condition of 5% $CO_2$ and 0.1 vvm, were excellent in the growth. The growth showing the maximum biomass accumulation is limited to 1.411 g/L when using the fluorescent bulb and the low powered surface mount device (SMD) type LEDs which were equipped-inside in the photobioreactor. However, the biomass exceeded up to 1.758 g/L level when a high powered red LED (color temperature : 12000 K) photobioreactor system was used. The $CO_2$ fixation speed and rate were increased. Although the total production of chlorophyll content undergoes a proportional increase in the biomass, the net content per dry cell weight (DCW) showed the higher production with a blue LED (color temperature : 7500 K) light than that of any other wavelengths. The carbon dioxide loss was marked as 0.15% of the inlet gas (5% $CO_2/Air$, v/v) at the maximum biomass culture condition.

• Korean Journal of Heritage: History & Science
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• v.42 no.4
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• pp.198-221
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• 2009

Royal tombs of Joseon dynasty are the crystallization of history, ideology, culture, art, architecture, and ritual ceremony of Joseon dynasty, all mingled in one. So, they are very significant symbols showing 500 years of dynastic history as a whole. Among various factors comprising a royal tomb, stone figures surrounding grave mound are special factors as a symbol protecting it. Further among them, twelve zodiac images arrayed nearest to the grave mound represent the core of the function. Images of twelve zodiac signs originated from the tombs of the Unified Silla Kingdom are certain to hold important role and position in the construction of royal tombs, judging from huge scale and excellent sculptural art of them. However, both their scale and form had been gradually simplified in Goryeo and Joseon dynasty, thus the importance of them has been underestimated compared to other stone figures Images of twelve zodiac signs were very important factors which decorated royal tombs both as a protective role and as a concept of direction. Their historicity and symbolism cannot be neglected in that they had been transmitted to the royal tombs of Joseon dynasty. In this paper, images of twelve zodiac signs expressed in the royal tombs of Joseon dynasty are classified into 3 forms, and reviewed the origin and development of them for each period. They could be classified into 3 forms ; civil vassals with human body and head, civil vassals with human body and head wearing hat decorated with zodiac animals, Chinese characters of either zodiac signs or either a combination of 10 calendar signs and 8 trigrams. The above 3 forms originated from China and became a favorite motif to decorate the royal tombs from early Joseon period until late Joseon by replacing each other and thus changing along the course of the dynasty. In the meantime, we can see a unique character in the images of twelve zodiac signs of royal tombs of Joseon dynasty. In some cases, 24 directions are expressed in which 10 calender signs and 8 trigrams are composed altogether. Images of twelve zodiac signs in the royal bombs of Joseon dynasty are very significant as evidences by which we can confirm uniqueness and tradition of Korean tomb system transmitted from Unified Silla period.

• Journal of architectural history
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• v.14 no.1 s.41
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• pp.89-105
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• 2005

The central aim of this thesis is to see if the structure of Palsangjeon(捌相殿) in Pubjoo Temple(法住寺), a five sto wooden pagoda in Chosen(朝鮮) Dynasty, was handed down from the ancient and middle ages. This study was performed through an analysis of Gilt-Bronze Pagoda built in Koryo(高麗) period. In other words, it is aimed at analyzing which lineage the structure of Palsangjeonbelongs to as a wooden pagoda. In analyzing the structure of Palsangjeon, I attempted to find out its source from the remains of Koryo period prior to the Chosen Dynasty. Examples are the Gilt-Bronze Pagoda, built during the Koryo period. I have also examined its relationship with other existing wooden pagodas and remains. The analysis of Palsangjeon, a five story wooden pagoda in Chosen Dynasty, focuses on the following: First, I explored the possibilities of whether the structure of Palsangjeon was newly invented in Chosen Dynasty, or if it had been derived from the wooden pagodas in the Koryo period. Secondly, I tried to find out if the stable vertical planes, with a great successive diminution ratio, were derived from the middle age, i.e. Koryo period. The results of the study of Palsangjeon through Gilt-Bronze Pagoda analysis are as follows: 1. The structure of Gilt-Bronze Pagoda, a wooden pagoda from the Koryo period, is roughly classified into the accumulation type, using pipe pillars, and the one story type using whole pillars. In the accumulation type, stories are connected in either a flat format or an intervening format. The Gilt-Bronze Pagoda is mainly composed of pipe pillars, with some whole pillars. However, the central pillar was omitted in the building structure. Generally, the upper and lower stories are connected by pipe pillars in a crutch format. All the pillars, whether they are pipe pillars or whole pillars, used Naiten(內轉) technology. The Eave supporter has the Haang type(下昻) and the Muhaang type(無下昻). In most cases, high balustrades are furnished, but few tables of high balustrades have been found. The slanting roof formats have been handed down from Paekche(百濟), Silla(新羅), or Koryo(高麗). However, the structure of the octagon is assumed to be derived from Koguryo(高句麗). The structure of the Gilt-Bronze Pagoda from the Koryo period is mainly composed of accumulated flat squares, with some spire types. intervening format, the structure of Palsangjeon used whole pillars in a half story format in which upper level side pillars are installed on the lower level tie beam. From the Bronze Pagoda from the Koryo period, we can assume that the half story format of wooden pagodas that has stable vertical planes with a great successive diminution ratio was created during the mid-Koryo period at the latest and had been idly developed by the time of the Chosen Dynasty. 3. The whole pillars in Palsangjeon are also found in Gilt-Bronze Pagodas from the Koryo period. Hence, all of the pillars in Palsangjeon seem to have been handed down from the ancient construction technology. They were also used in the construction of wooden pagodas from the Koryo period. Therefore, it is assumed that Palsangjeon was constructed using the construction technology of the Chosen Dynasty that had been developed from the wooden pagoda construction technology of the Koryo period. The stable vertical planes with a great successive diminution ratio in Palsangjeon are derived from ancient Korean wooden pagodas, which have developed into indigenous Korean wooden pagodas with fairly stable vertical planes and a great design, in the half story format of Koryo and Chosen Dynasty. Therefore, it is assumed that the structure of Palsangjeon has a systematic relationship with traditional Korean wooden pagodas and is one of the indigenous Korean wooden pagoda structures. 4. In China, the intervening format has been mainly used between stories in multi-story architecture since the ancient days. At the same time, the flat format as also used in ancient and middle ages. However, the flat format was replaced by whole pillars during the Ming(明) and Manchu(淸) Dynasties, in favor of simple and compact construction. The half-story format, in which upper level side pillars are installed on tie beams, has been found in some cases, but it doesn't seem to have been the primary construction technology. Few traces of the half-story format have been found in multi-story architecture in Japan, and it has not been used as a general construction format. By contrast, the half-story format, which seems to have been derived from the Koryo period, was used as a general construction format in multi-story architecture of the Chosen Dynasty. The construction technology of multi-story architecture is related to that of multi-story wooden pagodas, but they have different production technologies. It seems that the structure of Palsangjeon did not just adopt the construction technology of multi-story architecture in the Chosen Dynasty, but it was developed from wooden pagodas in the Koryo period, including the Gilt-Bronze Pagoda. 5. Since the ancient days, most Chinese and Japanese wooden pagodas have adopted an accumulation type of structure using pipe pillars, with accumulated pointed towers. On the other hand, though most Korean wooden pagodas have also adopted an accumulation type of structure from the ancientdays, one story type using whole pillars was created in the Koryo and Chosen Dynasties. The wooden pagoda structure of Palsangjeon, with stable vertical planes in a half story format, is a unique Korean construction technology, different from the construction technologies of Chinese and Japanese wooden pagodas. This thesis clearly determined the structural characteristics of Palsangjeon. However, various remains have yet to be analyzed in depth, to establish an accurate construction technology system. In the beginning of this thesis, I had difficulty in precisely interpreting the internal structure of the Gilt-Bronze Pagoda from its appearance. However, in the process of study, the more serious problem was that there are few remains or ruins of multi-story architecture in ancient and the middle ages of Korea. Therefore, it is urgent to discover various remains in the future. This thesis succeeded in determining the structural characteristics of Palsangjeon. However, it fell short of clarifying the structural lineage of the stable vertical planes, although they show indigenous Korean architectural taste, representing the unique national emotion, and the construction format of multi-story wooden pagodas in Korea. I hope this is clarified in the future research.