• Title/Summary/Keyword: Protection measure

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A Preliminary Investigation of Radon Concentration for Some Agricultural Greenhouses in Jeju Island (제주지역 일부 농업 시설 내 라돈 농도 예비 조사)

  • Kang, Tae-Woo;Song, Myeong-Han;Kim, Tae-Hyoung;Chang, Byung-Uck;Kim, Young-Jae;Kim, Geun-Ho;Park, Jae-Woo
    • Korean Journal of Environmental Agriculture
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    • v.31 no.1
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    • pp.9-15
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    • 2012
  • BACKGROUND: A preliminary investigation of the radon ($^{222}Rn$) concentration has been conducted, employing solid-state nuclear-track detectors (SSNTD) and a continuous radon monitor (CRM), for fourteen randomly selected agricultural greenhouses in Jeju Island, where the underground-air was used for air conditioning and $CO_2$ supplement. METHODS AND RESULTS: The SSNTD was used to measure the average radon concentration for three months and the CRM was used for an instantaneous measurement. In order to obtain the radon concentration of a greenhouse, the SSNTDs were placed at a number of evenly distributed points inside the greenhouse and the mean of the measured values was taken. In addition, in order to assess the radon concentration of the underground-air itself, measurement was also made at the borehole of the underground-air in each agricultural facility, employing both the SSNTD and CRM. It is found that the radon concentration of the greenhouses ranges higher than those not using the underground-air and the average of Korean dwellings. While the radon concentration of most agricultural facilities is still lower than the reference level (1,000 Bq/$m^3$) recommended by the International Radiation Protection Committee (ICRP), three facilities at one site show higher concentrations than the reference level. The three-month-averaged radon concentration and the instantaneous radon concentration of the underground-air itself ranges 1,228- 5,259 and 3,322-17,900 Bq/$m^3$, respectively, and regional variation is more significant. CONCLUSION: From this results, radon concentration of the underground-air is assumed that it is associated with the geological characteristics and the boring depth of the region located of their.

A Study of the Personal Ornaments and Make-up of Maroccan (모로코인(人)의 장신구(裝身具)와 화장(化粧)에 관(關)한 연구(硏究))

  • Lee, Soon-Hong
    • Journal of Fashion Business
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    • v.5 no.2
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    • pp.15-34
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    • 2001
  • Ornaments are accessories for the decoration of the body or dress. They aren't unavoidably required one, but serve to make one's dress perfect as decorative industrial art objects. In Morocco, ornaments were initially used as a sign of social position or the class or an incantatory symbol. In effect, they were originally employed to adjust one's dress, not just for decoration, and they were of use for household economy. Gold, silver and handcraft available for exchange were a means of increasing one's property and an indication of social standing and wealth. In particular, the dress and jewelry of a bride was a measure of her family's wealth, regarded as a symbol of her chastity and value. The ornaments symbolically back up people's faith in supernatural power, and their real value is based on implicit form or way of decoration, not the external shape. Specifically, there is a tendency to use the form of animal as a protector, not one to frighten people. In the artistic tradition of Morocco, fish pattern stands for water and rain, and eagle and bird are considered to be related to fate. Scorpion and lizard are depicted as an inquirer of sun, and snake is a symbol of abundance and sexual instinct, being viewed to have an ability to cure disease. Turtle pattern is a symbol of saint because it protects one from the evil. The ornaments are made of gold, silver, amber, clam, garnet, glass, nielle, enamel, glaze, coral or tree, and symbolic patterns are used, including hand(a symbol of five numerals), turtle, lizard, scorpion, eye, triangle, bird and eggs. They are very big and diverse, being categorized into ornaments for the head or the chest, neckless, fibula, earring, bracelet and ring. For Moroccans, make-up is a sort of instinctive behavior to meet aesthetic and sexual desire. They also wear make-up for practical purpose of protection, intentionally inflict a wound on the skin for ceremonial or religious purpose, paint the skin with pigment, or have the part of the body tattooed for incantatory purpose. All this actions are regarded as make-up. The raw material of cosmetics is aker, a vegetable dye. They get the lips or cheeks turn red and paint eyebrows with yellow saffran powder to have a bad devil lose its strength. Tattooing is mainly done by women and viewed as a sign of their value or social organization they belong to. Sometimes that is used to represent a woman's being old enough to marry or getting married already or the frequency of marriage. Besides, tattoo is believed to prevent or remedy loose bowels or cough, depending on its location or pattern, and they often change tattoo according to the change of beauty art.

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The Research of Improvement and Development Process for protection in Korea Private Security (한국 신변보호업의 발전과정과 개선방안 연구)

  • Park, Jang Gyu;Kim, Nam Joong
    • Convergence Security Journal
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    • v.13 no.2
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    • pp.33-43
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    • 2013
  • The Private Security Industry of Korea began after served security service for the United States army of 8 division. The industry grew up after establish private security regulation on December 31th of 1976. Early 1980's the industry was accelerated from bringing technical knowledge of developed nations rapidly. Also, private security was gotten into the spotlight by one of futurity industry instead public security after companies performed 86 Asian game and 88 Seoul Olympic successfully. Therefore, the industry became to increase qualitatively and quantitatively. From late 1990's the private security regulations were revised fifteen times and created about education system, bodyguard, and leader of security. 3,836 private companies and 150,030 private guards had operated until 2012. However, some of companies received administrative measure, because of the companies ran immorally. The minor companies are continuously closed down from the leader's inefficient operation. Approval standard of establishment has imperfect law. Solutions of problems are to provide high quality service, to expand company affairs, to attract specific customers through efficiency expert, to change standard of leader of security guards, to establish security education institution through the government and to intensify requirements to establish the company.

Clinical Study on the Survival Rate and Marginal Bone Resorption of Short Implants (짧은 임플란트의 생존율과 변연골 흡수량에 관한 임상적 연구)

  • Myung, Tae-Soo;Jung, Seung-Hyun;Kim, Tae-Young;Kim, Yu-Lee
    • Journal of Dental Rehabilitation and Applied Science
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    • v.28 no.1
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    • pp.1-13
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    • 2012
  • Short implants are used in parts which have anatomical structures like maxillary sinus, inferior alveolar nerve and limited alveolar height due to severe alveolar bone resorption. In these case, there are no need of additional bone augmentation so there are advantages like reduced entire treatment time, reduced patient's discomfort and protection of important anatomical structures. The aim of this study is, in implants whose length is less than 10mm, to analyze the impact of implant length, diameter, location of implant placement, presence of bone graft, presence of prosthesis splinting on survival rates and marginal bone resorption. The samples used in this study were 227 implants, less than 10mm, placed in 137 patients in Wonkwang university dental hospital implant center. From dental charts the information about implant length, diameter, location of implant placement, presence of bone graft, presence of prosthesis splinting were obtained. Emago advanced v5.6(Oral diagnostic systems, Amsterdam, The Netherlands)program was used to measure the amount of marginal bone resorption. Out of total 227 implants, resulting in 96.5 % of survival rate. There was a tendency toward higher failure rates for the maxilla and bone graft site. No significant difference in marginal bone resorption was found associated with length of implants(p>0.05) and neither with the diameter of implants. Among the risk factors examined, more failure rates of short implants can be attributed to poor bone quality in the maxilla and presence of bone graft. At implants under 10mm, length, diameter, location of implant placement, bone graft and splinting of prosthesis didn't affect marginal bone loss.

Conservation and Management of Lava Tubes in Jeju Island, Korea (제주도 용암동굴의 보존 및 관리 방안에 관한 연구)

  • Kim, Beom-Hoon;Kim, Tae-Ho
    • Journal of the Korean association of regional geographers
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    • v.13 no.6
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    • pp.609-622
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    • 2007
  • This paper examines the lava tubes designated as a natural monument in Jeju Island, and then makes the several suggestions for conserving and managing them. The cave entrances should be scientifically and strictly managed to prevent the deterioration, and to preserve the interior ecosystem, of the lava tubes. The land use and vegetation of the ground surface over the lava tubes should be also systematically managed; the destroyed sand dunes must be recovered for the development of speleothem in the lava tubes, and the plants with deep roots must be removed for the prevention of ceiling collapse. The provincial authorities should manage the ground surface over the lava tubes as a public land to remove the factors threatening the stability of the lava tubes. Since the roads crossing the ground surface are likely to cause the collapse of the lava tubes, new roads bypassing the caves need to be constructed, and warning signs should be also installed at the traverse points. A monitoring system on the cultural properties protection area over the lava tubes could be effectively established by encouraging residents to participate the conservation program of lava tubes. Since the falling blocks from ceilings have been usually observed in the lava tubes, it is urgent to examine their stability. In particular, the dangerous sections must be continuously monitored for taking a quick measure against the collapse. The air environments of lava tubes need to be scientifically analyzed based upon the long-term observations. The lighting equipments must be improved to minimize the green pollution in the lava tubes open to the public. The numbers of visitors should be also controlled to prevent the destruction and contamination of lava tubes caused by a large number of visitors.

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Morphological Characteristic of Immature stage in Platypus koryoensis (Murayama) (Coleoptera, Platypodidae) and Local Variation in the Number of Mycangia (광릉긴나무좀의 미성숙 충태별 형태특성과 유충령기, 균낭수의 지역별 변이 (딱정벌레목, 긴나무좀과))

  • Won, Dae-Sung;Choi, Won Il;Kwon, Young-Dae;Kim, Kyung Hee;Kim, Jong Kuk
    • Journal of Korean Society of Forest Science
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    • v.102 no.2
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    • pp.305-308
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    • 2013
  • This study was conducted to describe the external morphology of Platypus-koryoensis Murayama in immature stage, to determine each instar based on larvae head-capsule, and to measure individual and local variations in the number of mycangia of adult. Egg of P. koryoensis, had oval shape and lengths of the major and minor axis were $0.67{\pm}0.051$ mm and $0.41{\pm}0.053$ mm, respectively. Body colour of $5^{th}$ instar was gloss white with well-developed mandible. Larvae of P. koryoensis grew up to $5^{th}$ instar and each instar was clearly classified by head capsule width. Head capsule width for $1^{st}$, $2^{nd}$, $3^{rd}$, $4^{th}$, and $5^{th}$ instar larvae were $0.35{\pm}0.004$ mm, $0.45{\pm}0.010$ mm, $0.67{\pm}0.039$ mm, $0.94{\pm}0.069$ mm and, $1.12{\pm}0.007$ mm, respectively. The colour of pupa was pale yellow and its length was $4.64{\pm}0.044$ mm. The number of mycangia per female had individual variations from 5 to 12 and 83% of the adults had from 6 to 8 mycangia. There was no significant difference in number of mycangia collected from between Namyangju region and Honchen region.

Precautionary Action by a Military Aircraft in the Law of Air Warfare: its Rules and Problems (국제항공규범의 전시적용 법리와 쟁점 - 공전규범상 사전예방조치 (Precautionary Measure)의 법리와 쟁점을 중심으로 -)

  • Hwang, Won-Ho;Kim, Hyoung-Ku
    • The Korean Journal of Air & Space Law and Policy
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    • v.26 no.2
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    • pp.41-68
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    • 2011
  • This article deals with the current rules of law of air warfare and its surrounding issues on precautionary action by a military aircraft at air-to-air operation in international armed conflict. However there is no separate and independent legal system to regulate warfare in aerospace in the current system of law of war (or law of armed conflict). In other words, law of air warfare does not exist in a form of a separate treaty. Air warfare has been regulated by international customary law and the relevant provisions in different Conventions, including 1949 four Geneva Conventions and two Additional Protocols, which mainly regulate land and naval warfare. And this makes difficult to make clear a legal term or legal tests on an issue concerned with law of air warfare, which concludes from time to time a dispute on interpretation and implementation of law of air warfare between states. Therefore, this article refers various materials (including 1949 Geneva Conventions and Additional Protocols, San Remo Manual, Harvard Manual, and ICAO Manual on Interception of Civilian Aircraft) for the purpose of defining the current and desirable legal test on precautionary action by military aircraft. In addition to the main purpose of this article, this article tried to show a characteristic of developing mechanism of law of air Warfare taking into account interactions between international air law and law of air warfare.

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Reliability and Validity of the Korean Version of SERVPERF : A Validation Study (서비스 질 척도(서브퍼프)의 타당화 연구: 종합사회복지관을 대상으로)

  • Kim, Yong-Seok;Choi, Jong-Bog;Hwang, Seong-Hye;Kim, Min-Suk;Seo, In-Ja
    • Korean Journal of Social Welfare
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    • v.61 no.2
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    • pp.107-135
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    • 2009
  • The purpose of this study is to develop and evaluate the Korean version of the SERVPERF which has been widely used in order to measure service quality in various kinds of fields including social work. A total of 328 adults using social welfare centers in Seoul and Gyeonggi-do participated in this study. Confirmatory factor analysis confirmed that the Korean version of the SERVPERF consists of 5 dimensions(tangibles, reliability, responsiveness, assurance, and empathy) like the original SERVPERF. 5 dimensions of the Korean version of the SERVPERF have acceptable levels of internal consistency. Its convergent validity and discriminant validity are satisfactory. Finally, weak or non-significant correlations between 5 dimensions of the Korean version of the SERVPERF and social desirability scale indicated that the participants' reponses to the Korean version of the SERVPERF were not affected by social desirability.

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Study on Developing Assessment Guideline for Safety and Performance of Electric Moxibustion Apparatus (전기식 온구기에 대한 안전성 및 성능 평가 가이드라인 개발 연구)

  • Yi, Seung-Ho;Kang, Jung-Won;Nam, Dong-Woo;Kim, Eun-Jung;Lee, Hye-Jung;Kim, Kap-Sung;Lee, Jae-Dong
    • Journal of Acupuncture Research
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    • v.27 no.1
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    • pp.75-86
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    • 2010
  • Objectives : We developed and proposed a guideline for safety and performance assessment of electric moxibustion apparatus (class II medical device). Methods : We drafted the guideline for safety and performance assessment of electric moxibustion apparatus by referring the existing standards, guidelines and measurement data from commercially available products. Temperature characteristics such as maximum temperature and ramp time, and physical characteristics such as weight, noise and diameter were measured. User friendliness was also evaluated for commercial devices. Results : This guideline only can be applied to the electric moxibustion apparatus where moxa is being heated by electricity for medical proposes. Maximum temperature of higher than $50^{\circ}C$ can be achieved mostly. Ramp rate of temperature seems to be reliable. Control of temperature is needed to be improved. Moxa and its derivative products seem to be regulated for reliable temperature performance for clinical application. Requirements for design and development of electric moxibustion apparatus are suggested : temperature indicator, temperature control and its accuracy, safety measure, surge protection, user friendliness and instruction for use (IFU). Design recommendation of the reduction of noise level and energy loss are suggested for better products. Conclusions : We proposed a guideline for safety and performance assessment of electric moxibustion apparatus to improve the quality of relating products and aid their commercialization by aiming higher industrial competitiveness of the medical device sectors in Korea. Discussion with related institutes such as industry, academy and government is further required. Public hearings also need to be held prior to the establishment of a final guideline and standard.

A Study on the Corrosivity according to Soil Characteristics and Electrolytic Protection for the Materials of Fuel Gas Pipe (토양 특성 및 전기방식에 따른 연료 가스용 강관의 부식 차이에 관한 연구)

  • Yim, Sang-Sik;Kim, Ji-sun;Ryu, Young-don;Lee, Jin-Han
    • Journal of the Korean Institute of Gas
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    • v.20 no.6
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    • pp.16-22
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    • 2016
  • Coating pipe(PLP) has been generally used in buried site for protecting the corrosion. To prevent the damage by occurring the defect, other construction or execution works, an anti-oxidation environment was forcibly made by using protective potential. Coating and protective potential are applied simultaneously, but corrosion rate or defects are not easy to observe because soil composition has many uncertainty. Also, defect of coating pipe can not be directly observed. A corrosion coupon can easily measure a corrosion rate directly. The corrosion rate was measured with 6 scenarios using corrosion coupon during about 1 year(6 scenarios are based on soil type and protective potential or not in this research. Resultingly, the corrosion coupon has not occurred in the case of protected by potential current, but corrosion has occurred in a non-protected site. The corrosion rate was measured at least in the clay, and the propensity of corrosion rate was similar in other soil(sand and loams). The local corrosion has occurred in the clay because of high water content. On the other hand, general corrosion was occurred in sand and loams. Commonly, sand is not to corrosive soil. Although, corrosion occurred in sand can be estimated by chemical component and valid with chemical analysis report.