• Food Science of Animal Resources
• /
• v.36 no.4
• /
• pp.547-557
• /
• 2016

This review discusses the status, antimicrobial mechanisms, application, and regulation of natural preservatives in livestock food systems. Conventional preservatives are synthetic chemical substances including nitrates/nitrites, sulfites, sodium benzoate, propyl gallate, and potassium sorbate. The use of artificial preservatives is being reconsidered because of concerns relating to headache, allergies, and cancer. As the demand for biopreservation in food systems has increased, new natural antimicrobial compounds of various origins are being developed, including plant-derived products (polyphenolics, essential oils, plant antimicrobial peptides (pAMPs)), animal-derived products (lysozymes, lactoperoxidase, lactoferrin, ovotransferrin, antimicrobial peptide (AMP), chitosan and others), and microbial metabolites (nisin, natamycin, pullulan, ε-polylysine, organic acid, and others). These natural preservatives act by inhibiting microbial cell walls/membranes, DNA/RNA replication and transcription, protein synthesis, and metabolism. Natural preservatives have been recognized for their safety; however, these substances can influence color, smell, and toxicity in large amounts while being effective as a food preservative. Therefore, to evaluate the safety and toxicity of natural preservatives, various trials including combinations of other substances or different food preservation systems, and capsulation have been performed. Natamycin and nisin are currently the only natural preservatives being regulated, and other natural preservatives will have to be legally regulated before their widespread use.

• Resources Recycling
• /
• v.23 no.5
• /
• pp.62-67
• /
• 2014

Used metallic can should be recycled from the point of view of environmental preservation and resource recycling. Metallic can is one of EPR items, and classified into steel can and aluminum can according to the can body material. In Korea about eighty percent of metallic cans are made of steel. In this article, production of cans and current status on domestic recycling of used metallic cans in recent years(2008-2012) were surveyed. Recycled ratio by weight of used steel and aluminum cans was about 80.8% and 81.8%, respectively in 2012. Totally it reached 81.8%.

• Journal of the Korean Wood Science and Technology
• /
• v.52 no.2
• /
• pp.175-190
• /
• 2024

The increase in atmospheric carbon dioxide concentrations is known to be closely associated with climate change and global warming. In this sense, considering that facilities for appropriate education and experience on wood, which is a carbon pool, have been required, this study targets the Wood Cultural Experience Centers, which are in current operation, examines and evaluates their operation status and policy changes, and ultimately derives a successful positioning plan. To this end, it conducts a survey, and the results are as follows. First, as a result of the similarity analysis (KYST: Kruskal-Young-Shepard-Torgerson program) with facilities with leisure activities and educational functions, the Wood Cultural Experience Center have competition with natural recreation forests in terms of naturalness, and it has competition with the career experience center and youth training center in terms of experiential observation. Second, the result of positioning analysis of the attribute space map indicates that the Wood Cultural Experience Center is positively perceived in terms of such attributes as naturalness, experiential learning or recreation, and preservation of natural environment, but is negatively recognized in terms of accessibility, escape from daily life, and things to see.

• The Korean Society of Law and Medicine
• /
• v.22 no.3
• /
• pp.57-95
• /
• 2021

Korea's period for preservation of embryos is up to five years (the Bioethics Act). However, the study reviewed domestic and foreign laws and drew issues due to the recent demand that the development of related science and technology and the period limitation limit the rights of consent holder for embryo production. the first issue is that preserved embryos are intended for pregnancy, and it is important to ensure that the autonomy of the consent holder is protected through careful consideration based on information such as scientific evidence. the second is that regulations regarding the obligation to manage embryonic preservation institutions are needed. the third is to create a social atmosphere in which embryo creation, preservation, and disposal take place in a minimum range, considering the special status of embryos. based on this issue, the first of the proposals for rational improvement of the regulation and system about embryo preservation is the introduction of an environment in which sufficient explanation and appropriate consent can be exercised and to extend the reasons for the extension of the period, rather than specifying the specific period in law. the second is that institutionalization is necessary considering not only the obligation to manage preservation institutions but also the overall site, such as concerns that may arise as a result. lastly, we propose the introduction of a management method considering the future use of embryos, such as transfer to provide research purposes and donation of pregnancy purposes by others. this process should be a method of sufficient social discussion and consensus, as well as a general consideration of the family relationship with the born child.

• Korean Journal of Heritage: History & Science
• /
• v.55 no.2
• /
• pp.132-144
• /
• 2022

The representative cultural heritage showing relatively clearly the growth and development of the Mahan culture in Jeollabuk-do is the tombs in Sangun-ri, Wanju. The tombs were excavated in the early 2000s; however, little effort has since been made to investigate or preserve the wider area around the tombs. Thus, only the status quo has been maintained except for the conservation of a few relic parks. In recent years, active cultural management has become necessary to maintain the historic areas in the Mahan cultural region, so these tombs are once again receiving attention. To further the preservation efforts in the area, it is important to actively discuss budget adjustments, consider additional investigation, and re-examine the academic value of the historic site. Practical limitations mean that it is necessary to approach the conservation strategy in stages. The first step is to have the areas of cultural interest and any adjacent lands urgently designated as provincially protected cultural heritage. Consequently, historically important areas on private land should be identified and purchased. Thereafter, a preservation plan should be established to reinforce the historical value of the sites as nationally designated historic sites. This can be achieved through the restoration of the landscape adjacent to the historic sites, as well as additional investigations and designation of sites in surrounding areas. These goals can only be achieved with the active interest and support of relevant institutions.

• The Korean Journal of Physiology and Pharmacology
• /
• v.17 no.2
• /
• pp.169-173
• /
• 2013

Renal ischemia-reperfusion (IR) causes remote liver damage. Oxytocin has anti-inflammatory and antioxidant effects. The main purpose of this study was to evaluate the protective function of oxytocin (OT) in remote liver damage triggered by renal IR in rats. Twenty four rats were randomly divided into four different groups, each containing 8 rats. The groups were as follows: (1) Sham operated group; (2) Sham operated+OT group (3) Renal IR group; (4) Renal IR+OT group. OT ($500{\mu}g/kg$) was administered subcutaneously 12 and 24 hours before and immediately after ischemia. At the end of experimental procedure, the rats were sacrificed, and liver specimens were taken for histological assessment or determination of malondialdehyde (MDA), total oxidant status (TOS), total antioxidant status (TAS), paraoxonase (PON-1) activity and nitric oxide (NO). The results showed that renal IR injury constituted a notable elevation in MDA, TOS, Oxidative stress index (OSI) and significantly decreased TAS, PON-1 actvity and NO in liver tissue (p<0.05). Additionally renal IR provoked significant augmentation in hepatic microscopic damage scores. However, alterations in these biochemical and histopathological indices due to IR injury were attenuated by OT treatment (p<0.05). These findings show that OT ameliorates remote liver damage triggered by renal ischemia-reperfusion and this preservation involves suppression of inflammation and regulation of oxidant-antioxidant status.

• Journal of Agricultural Extension & Community Development
• /
• v.8 no.1
• /
• pp.133-142
• /
• 2001

The objectives of this study were 1) to review the current status of cooperative extension services in Japan, and 2) to draw implications for improving Korean agricultural extension system. Faced with various problems since its localization of extension services in 1997, Korean agricultural extension needs to be improved and strengthened in order to continually achieve the national goals of food production, balanced national development and preservation of environment, at the same time to meet increasing needs of farmers. The results of the study revealed the major characteristics of agricultural extension services in Japan as follows; 1) Each agricultural extension centers were administratively and technically coordinated by the prefectural (provincial) government, 2) There were 11 public corporations with agricultural extension functions under the MAFF(Ministry of Agricultural Forestry and Fisheries) financed by government subsidies 3) Agricultural experiment stations at provincial level were responsible for developing agricultural innovations for farmers' adoption, 4) The functions and operation of the agricultural extension centers were independent from the local agricultural administration. Some of the implications drawn from the study were as follows; 1) In order to accomplish major objectives of agricultural extension services in Korea legal status of agricultural extension centers should be changed from city/county to provincial government, 2) It would be desirable to establish public corporations concerned with agricultural extension under the Rural Development Administration, 3) Provincial Rural Development Administration should be reinforced in terms of applied farming research and diffusion of new technology, 4) Agricultural extension centers should be independent from administrative function and be separated from administration at the city/county level.

• Journal of Korean Society of Archives and Records Management
• /
• v.20 no.3
• /
• pp.55-76
• /
• 2020

Although most medical institutions in Korea use electronic medical records (EMR), there are many problems in the management and preservation of records when such medical institutions are closed. Records of closed medical institutions need to be systematically managed; however, the rate of closed medical institutions transferring records to public health centers is significantly low. Given that each medical institution has a different system and format, public health centers often cannot access records. In addition, there are no management standards that suit the reality of public health centers and the specificity of EMR. Recently, a strengthened Medical Law has been passed wherein records of closed medical institutions should be kept by health centers; therefore, this study focused on drawing up measures for efficient records management by public health centers. To this end, the relevant laws and management status were identified and an interview was conducted. After analyzing the problems, improvement plans in institutional, technical, and administrative aspects were proposed.

• Journal of dental hygiene science
• /
• v.22 no.4
• /
• pp.241-248
• /
• 2022

Background: Plastic waste generates pollutants in the process of incineration or landfilling, and accumulates in water or marine organisms, causing adverse effects on the environment and the human body. Recently, various eco-friendly oral hygiene products (Eco-OHPs) such as bamboo toothbrushes and biodegradable plastic toothbrushes have been developed. Therefore, this study aimed to investigate the current level of awareness and purchasing status of eco-OHPs among adults who are interested in eco-friendly products. Methods: This study included adults aged >19 years who regularly visited eco-friendly shops and online sites; the online survey links were distributed during their visits to eco-friendly Internet cafés and companies. Of the 22 questions, seven assessed the participants' general characteristics, three assessed the general oral hygiene care products used, six assessed the level of awareness of Eco-OHPs, and six assessed the purchasing status of Eco-OHPs. Frequency analysis, chi-square test, and regression analysis were performed using SPSS software. Results: Among the respondents, 108 (51.4%) were aware of Eco-OHPs, and 79 (37.6%) had experience purchasing Eco-OHPs. The most common reason for not purchasing was the lack of information about related brands or products (74, 56.5%). The most common platform used in obtaining information was the Internet (general: 31.5%, eco-friendly: 46.3%), such as Social Network Service, Internet cafes, and blogs. The experience in purchasing Eco-OHPs was affected by whether the respondents recognized the possibility of contributing to environmental preservation, availability of vendors, product safety, and the number of eco-friendly products purchased. Conclusion: In order to expand the use of Eco-OHPs, various efforts such as promotion of eco-friendly characteristics, determination of related vendors, reliable analysis of product safety, and expansion of product experience opportunities are required.

• Journal of Environmental Impact Assessment
• /
• v.17 no.1
• /
• pp.11-24
• /
• 2008

The Korea Environmental Impact Assessment (EIA) system was introduced in 1977 through the Environmental Conservation Act. It has progressed through many laws and regulations promoting the balance between development and conservation, and functioning as a Preventitive environmental policy. Despite the efforts to minimize environmental damage from development and to uplift social awareness of environmental preservation, deficient impartiality and objectivity in completing and investigating environmental assessments, there have continously existed conflicts among related stakeholder, neglecting arrangements and ineffectiveness of public participation. This research present EIA obstacles and analyzes the overall status of the EIA through surveys from related experts. On the basis of this research, the actual complications regarding the developer, public participation, examiner and consultant are brought about. Also, remedies are proposed to ensure effective EIAs and restore confidence in them.