• 보존과학연구
• /
• s.17
• /
• pp.161-182
• /
• 1996

In natural atmosphere, copper and copper alloy have been used to make buddha statues and ornaments of historic buildings since the abovementioned metals have corrosion resistance in some extent, and the patinaformed on the surface of the metals has provided the people aesthetic satisfaction with its beauty. But in atmosphere polluted by $SO_x$and $NO_x$, the patina layer does not work as a protective film, and it allows damages of the metal. Since 1992, Tokyo National Research Institute of Cultural Properties(TNRICP)has conducted studies on the influence of atmospheric pollution on metal cultural property held under open air. The Great Buddha Image which is located in Kamakura about 50km west from Tokyo, has been selected as one of the objects to study because it is made by copper alloy and it has stood exposed in the air for about a few hundreds years. Furthermore it is also the reason to study on it that there are many cultural properties in the surroundings of it. We have analysed the components and the structure of the corrosion products formed on the surface of the Buddha, have carried out exposure tests using the alloy samples which have simulated the components of the Great Image, and have observed climated and polluted air in order to discuss the relation between corrosion of metals in open air and conditions of the atmosphere. In this paper, the authors have described the components and the structure of the corrosion product formed on the surface of the Great Image by means of X-ray fluorescence spectroscopy and X-ray diffraction. The conclusions are as follows. (1) Sulfate patina composed mainly with brochantite were detected on the all sides of the Image and the amount of the patina is found more on the back of the Image facing to north. (2) Antlerite were detected on the back and a park of the left side facing to west, and formation of it was considered to have close relation with malignant atmosphere. (3) A big amount of chloride patina which mainly composed of atacamite were observed on the front facing to south. (4) Carbonate patina mainly composed of malachite were detected on the area where brochantite was often detected as well. It suggested that malachite had been transformed into brochantite by deteriorated atmosphere. (5) On the all sides of the Image, patina were observed together with copper oxides mainly composed of cuprous oxide. It showed that the surface layer of the Image consists of two layers : inner layer of oxide and outer layer of patina. (6) Corrosion products of lead which was a component of copperalloy were detected on the all sides : the main lead product found on the front was chlorophosphate whereas the one on the back was sulfate.

• Journal of Society of Preventive Korean Medicine
• /
• v.3 no.2
• /
• pp.129-150
• /
• 1999

This study was carried out to analyse a perception on acne for the Junior college students to provide basic data for the suitable treatment of acne to the students and the specialists. For this study, self-administering questionnaires were distributed to 480 students from 13 departments at a suburban women's junior college from May 1 to May 3, 1996. Of the students, 399 were responded and included in the analysis. The questionnaire includes the general question of objects, the question of knowledge and attitude of acne, and its treatment. The results were as follows: 1. Age distribution for the group less than 20 years was 63.7% and over 20 years was 36.3%, the group with acne was 66.2% and the group without acne was 33.8%. Proportions of acquiring the knowledge on acne was 49.6% from newspaper or magazine, 47.15 from friends, and 26.85 from TV or radio. 2. With regard to the knowledge on the presence of acne, a proportion of correctly answered for the question on the cause of acne was $3.41{\pm}1.02$ for the group with acne compared with $3.16{\pm}0.89$ for those without acne. This difference was statistically significant (p<0.05). 3. With regard to the knowledge levels on the treatment of acne, a proportion answered' skin-care center' for the question on where to select for the profer treatment was $13.21{\pm}1.88$ compared with $12.09{\pm}1.88$ for the other group. This difference was statistically significant (p〈0.05). A proportion of answered 'squeezing out acne by themselves' for the question of how to treat was $12.26{\pm}1.91$ compared with $10.83{\pm}1.25$ for the other group. 4. In the treatment according to the attitude of the group with acne, the positive group replied 'YES' in the intention of treatment by themselves was 55.9%. In conclusion, the differences in the knowledge and attitude on the presence of acne are not significant and it was found that the knowledge and attitude for the group with acne did not significantly influenced the treatment behavior. Accordingly, it is important to understand the cause of acne, provoking factors, remedy etc. For this, it is necessary to a provide an accurate information to professionals to enhance the knowledge of acne and to treat it properly.

• Korean journal of communication and information
• /
• v.74
• /
• pp.136-176
• /
• 2015

Despite the great significance we attach on culture, only a handful of researches focus on the characteristics and practices of cultural journalism. This study has aimed to unravel the changes in the trajectory of cultural journalism of Korean major newspapers, through content analysis and qualitative interpretation of the cultural contents they report. The results show that the number of cultual items have decreased compared to that of 10 years ago, although the entire number of pages has meanwhile increased. News items focused on 'products(advertisement)' and 'life(style)' have increased, whereas those on 'knowledge refined' and 'leisure entertainment' have decreased. 'Critique review commentary', 'academics' and 'performance exhibition art music' items turn out to have decreased significantly; soft contents such as mass culture, tourism, fashion and beauty, on the other hand, have increased considerably. Moreover, the demographic characteristics of news contributors remain almost the same, except that the proportion of ordinary readers/audience has slightly increased. Similarly, although there were no difference regarding the sources of direct quotation, the frequency of quotes from ordinary readers has increased. Consequently, these results imply how the cultural journalism of Korean newspapers are limited in encompassing diverse types of content, differentiating constitution, and presenting critical viewpoints.

• Journal of Korean Society of Forest Science
• /
• v.86 no.1
• /
• pp.87-97
• /
• 1997

In this research, photo images of uncultivated marginal lands were simulated to visualize alternative land use patterns using image capture technology. Based on an original photos, 3 simulated images were created ; barren condition, aforested condition and shrub-covered condition. The simulated images were then used to evaluate respondents' visual preference(SBE value) and willingness to pay for the agricultural development tax as a hypothetical payment vehicle. The SBE values for barren condition are the lowest, as expected. When original condition is changed to forested or shrubbed, the SBE values are increased significantly. The logistic models for the willingness to pay for the various alternative land uses performed significantly, ${\rho}$ statistics for 6 models ranges from 0.3 to 0.4 and correct percentage for predicted probability are about 75%. Among independent variables, the amount of tax offered is the most influencing factor to predict the probability. Income also shows some relationship with no statistical significance. Other variables behave inconsistently in the model. When SBE and WTP are correlated, rather consistent trends can be observed. With the increase of SBE, WTP predicted by the model increases accordingly. It can be concluded that enhancement of scenic quality of the agricultural lands leads to increase of people's willingness to pay to support the rural environmental conservation.

• Journal of Life Science
• /
• v.22 no.10
• /
• pp.1420-1427
• /
• 2012

We investigated the physiological activity and solvent-partitioned fractions of methanol extracts from the green seaweed Sargassum fulvellum. The methanol extract from S. fulvellum was sequentially fractionated with n-hexane (SFMH), methanol (SFMM), buthanol (SFMB), and water (SFMA). We investigated the antioxidant activities of solvent fractions from S. fulvellum by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging capacity and an SOD activity assay. DPPH radical scavenging capacity of SFMM was 79.5% at 10 mg/ml. SOD activity of SFMM was 79.9% at 10 mg/ml. Nitrite scavenging activities of solvent fractions from S. fulvellum were investigated under different pH conditions and showed the most remarkable effect at pH 1.2. In particular, the activity of SFMB was higher than the other fractions. ADH activity and ALDH activity of SFMM were 177.0% and 167.4% at 10 mg/ml, respectively. ${\alpha}$-Glucosidase inhibitory activity of SFMH increased in a dose-dependent manner and was about 94.1% at 2 mg/ml. Elastase inhibitory activity was 93.2% at 2 mg/ml. These results revealed that S. fulvellum extracts have strong antioxidant and alcohol dehydrogenase activities and ${\alpha}$-glucosidase inhibitory activity, suggesting that S. fulvellum extracts have potential as a source of natural products for health and beauty.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.4
• /
• pp.67-74
• /
• 2017

This study analyzed the antioxidant activities and antibacterial effects of extracts from the fruit of Citrus junos. Theextracts were obtained in both 70% ethanol solution and distilled water at a distillation temperature of $50^{\circ}C$.Three experiments were carried out between November 2016 and March 2017. The averages and the standard deviations of the results were measured. The total polyphenol and tannin contents of the ethanol extracts were $7.8{\pm}0.02mgGAE/g$ and $9.9{\pm}0.01mgTAE/g$, respectively, which were higher than the concentrations in the water extracts. Furthermore, the ethanol extracts scavenged $46.1{\pm}4.76%$ of DPPH radicals and $37.1{\pm}1.23%$ of ABTS radicals. The scavenging capability of the ethanol extracts was also higher than that of the water extracts. However, the scavenging capability of both types of extracts depended on their concentrations.All the extracts showed active antibiosis effects against every bacteria tested except for C. albicans. E. coli at 25 mg/disc showed antibiosis with $18{\pm}1.73mm$ for the water extracts, while S. epidermidis and S. aureus showed antibiosis with $17{\pm}4.36mm$ and $19{\pm}2.86mm$ for the ethanol extracts, respectively. This antibiosis rate is considerably higher. The results suggest that fruit extract from Citrus junos could be useful as a primary material for beauty or skin-related products such as soaps, shampoos, and scalp enhancers.

• Journal of Life Science
• /
• v.31 no.1
• /
• pp.47-51
• /
• 2021

In today's society, functional whitening cosmetics are important to beauty. Fungi are known to produce a variety of whitening-related metabolites. In this study, we searched for tyrosinase inhibitors with metabolic products derived from Trichoderma atroviride supernatant in order to apply a material for whitening functional cosmetics. In addition, the inhibitory effect was compared to arbutin, which has already been approved as a whitening raw material by the Korea Ministry of Food and Drug Safety (KMFDS). The metabolites from the T. atroviride supernatant showed higher tyrosinase inhibitory activity than that of arbutin. Some of the tyrosinase inhibitors were stable to heat, whereas some were unstable. The heat unstable material was exhibited in the case of samples treated with little amounts, such as 0.02~0.2%. They were very unstable in acidic and alkali pHs, especially under acidic conditions. However, it was found that a weakly-acidic to neutral pH range was the optimal working pH, especially neutral pH. Since the activity of the inhibitory substances in the T. atroviride supernatant was maintained regardless of proteinase K treatment, it was assumed that the metabolites, but not the bioactive peptides, were involved in the activity. In summary, we propose that the metabolites derived from T. atroviride supernatant have strong potential as whitening raw material.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2018.10a
• /
• pp.26-27
• /
• 2018

With entry into force of the Nagoya Protocol to promote the fair sharing of the benefits of accessing and utilizing genetic resources, much support has been given to research on the development of biomaterials and products using domestic natural resources. Conservation and resource-saving of native species became very important through Nagoya Protocol enactment. The trend of cosmetic industry has been shifing from use synthetic chemicals to natural biomaterials, due to the safety regulations on new materials, ban on animal experiments, and expansion of cosmeceuticals range. In addition, functional cosmetic range has been expanded from whitening, wrinkle improvement, and ultraviolet shielding, to hair loss, hair loss alleviation, acne relaxation, and moisturizing of atopic skin, thus causing the activation of research about field of efficacy evaluation on natural biomaterials and commercialization. Chungbuk province is fostering the bio industry as a key industry for regional economic growth. For this purpose, Osong Biotechnology Complex/Ochang Science Industrial Complex in middle area, Jecheon biovalley in northern region, and Chungju Enterprise city have been established, thus playing a pivotal role in Bio innovative cluster in Korea. In particular, it was established the osong cosmetics clinical research support center to develop the cosmetics industry in chungbuk, thereby supporting clinical trials, efficacy evaluations, overseas certification, and overseas market entry in order to advance into the global market. In addition, oriental plants such as astragalus propinquus, schisandra chinensis, eucommia, alpiniae oxyphyllae fructus and biancaea sappan are being actively studied as global cosmetic ingredients through the promotion of various national research and development projects using natural materials in chungbuk province. The chungbuk natural product industry is expected to grow further throughout cosmetics industry development in the future, as companies and research institutes are actively promoting the secure index of effective material in natural products and effective material commercialization.

• Journal of the Korean association of regional geographers
• /
• v.22 no.3
• /
• pp.529-552
• /
• 2016

The purpose of this study is to examine the matter as to how the meaning of the physical therapeutic landscape by water, which is associated with physical, cultural, spatial, and economical aspects, appears in the space centering on women and is to look into the feminine factors in term of a rest area, consideration, and imagery for women. From a perspective of a rest area for women, the meaning of a physical aspect is remarkable and is materialized in thermal waters and bathing, atmosphere, subsidiary facilities and safe nightlife. According to these phenomena, female visitors are able to feel freedom, power, which can return themselves to the best condition by thermal waters, therapeutic equipments provided in a watering place continuously, safe protection and exchange with strangers with an open mind. And the cultural aspect of the therapeutic landscape by water is discovered in consideration for women. It is the fact that joins the Japanese culture based on consideration towards others to the traditional culture of hot springs by itself. For example, women can feel various pleasure, experience the protection or the support by someone and pursuit not only physical beauty but also mental or spiritual one through welcome bus, service of Okami san and Nakai san, decorations, funny installments and secure of private space. Lastly, the imagery of women can be identified in cultural, spatial, and economical aspects extensively somewhat and is embodied by advertising mediums, signs of hot springs, shrines, objets and products variously. It is made into healthiness, relaxation, comfort, familiarity and image that are realized to love or are connected to a happy marriage life. To sum up the results, the healing or therapeutic elements for women appearing in hot springs are gathered to some abstraction such as freedom, safe, effect beyond the body, pleasure, durability of healing or therapy, beauty and hope; furthermore, if these abstraction are combined each other closely, the effect of healing or therapy, which transforms anxiety into a stable condition, can be exposed externally.

• Science of Emotion and Sensibility
• /
• v.15 no.2
• /
• pp.193-200
• /
• 2012

The purpose of this study was to investigate the consumer sensibility according to the arrangement and area-ratio of a stripe, and the necktie width. The experimental materials developed for this study were a set of stimuli and necktie sensibility scales. The stimuli were 27 color pictures, in which the necktie width(narrow, medium, wide), stripe arrangement(horizontal, vertical, oblique), and stripe area-ratio(1:1, 1:2, 1:3) were manipulated. The 7-point scale was used for the consumere sensibility. Data were obtained from 270 men and women in their 20s and 30s living in Seoul, Gwangju, Daegu, Jinju, and Changwon on November 2011. For the data analysis, ANOVA and Duncan-test were used by using SPSS program. Results of this study were as follows.; The factors of consumer sensibility according to the arrangement and area-ratio of a stripe, and the necktie width consisted of five dimensions of attractiveness, grace, individuality, ability, and activity. The necktie width showed an independent effect on attractiveness and grace. The stripe arrangement showed an independent effect on attractiveness, grace, individuality, and ability. The stripe area-ratio showed an independent effect on grace. Also, interaction effects of the necktie width and stripe area-ratio on ability were found. The study results are highly expected to be used as valuable sources in plans for necktie products.