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Pollution of Heavy Metals and Sedimentation Rates in Sediment Cores from the Chinhae Bay, Korea (진해만 퇴적물의 퇴적속도와 중금속 오염)

  • Yang, Han-Soeb;kim, Seong-Soo;Kim, Gue-Buem
    • Journal of Environmental Science International
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    • v.4 no.5
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    • pp.489-500
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    • 1995
  • In the Chinhae Bay, Korea, sedimentation rates and sedimentary record of anthropogenic metal loads were determined by $^{210}Pb$ dating and heavy metal analysis of four sediment cores . The sedimentation rates varied from 0.16g/$cm^2$/yr(3.1mm/yr) at Sta. Ct, located within narrow waterway to 0.24g/$cm^2$/yr(4.8mm/yr) at Sta. Cl, located in Haengam Bay. Maximum contents of Mn, Zn, Cu and Cr were observed at Sta. C2 located near the mouth of Masan Bay, while minimum contents were observed at Sta. CB. Mn/Fe ratios at Sta. C2 and Sta. C4 showed gradually increasing and decreasing downward, respectively, in the upper layer of sediment cores. This suggests that Mn may be diagenetically redistributed in highly reduced environment. At Sta. C2, the concentrations of Zn and Cu began to increase from 1920s by anthropogenic input and have been remarkablely increasing since mid 1960s. At Sta. C3, located near Sungpo, anthropogenic input of these two elements has also slightly increased after 1970s. However, pollution of these two elements was not significant in Haengam Bay(Sta. Cl) and Chiljun watenway(Sta. C4). The pollution of Co, Ni and Cr was not remarkable in all core samples except surface sediment of Sta. C2. The total input of anthropogenic Zn and Cu since 1920s was estimated to be 28~792 $\mu\textrm{g}$/cm2 and 0~168$\mu\textrm{g}$/cm2, respectively. Sta. C2 showed remarkablely higher values relative to other stations: anthropogenic loads of Zn and Cu constituted 27% and 29% of the total sedimentary inventories at the present day, respectively. Fe, Ni, Cr and Co contents showed good correlation(r>0.8) with each other. Anthropogenic Zn and Cu also showed a very good positive correlation(>0.9). However, correlation between these two group of element was quite scattered, indicating different sources and geochemical behaviors.

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A Grounded Approach to Dietary Experiences in College Women (여대생의 다이어트 경험에 관한 근거이론적 접근)

  • Lee, Jeong-Seop;Kim, Byoung-Hee;Jeong, Hyeon-Cheol;Lee, Seoung-Eun
    • Women's Health Nursing
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    • v.7 no.4
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    • pp.596-609
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    • 2001
  • This research is intended to study the dietary experiences by college women to promote women's health through the proper diet. The approach method was used grounded theory. The participants were selected 3 colleges in Seoul, Inchon, and Cheongju. The selected 15 women were college students who had a history of dietary experiences or who were on the way of diet at the time of the start of this research. The data were collected from August 2001 to October 2001. Data collecting method was a Focus Group Interview. The data were analysed by the Strauss and Corbin's method(1966). The results were showed that the 236 concepts in the dietary experiences were gathered into 48 sub-categories, eventually being integrated into 17 higher categories. 'Esthetic self-pursuit' is the core phenomenon of the dietary experiences. Such phenomenon is due to subjects physical problems, sense of comparison and desire of weight-loss. In the circumstantial context, the esthetic self-pursuit phenomenon is enhanced by social opinions, aesthetic senses, and the recognition of self-control. The interaction strategy of the esthetic self-pursuit can be intensified and sustained by will power, supporting systems, and accessibility. Through the dietary experiences, the body changes positive or negative figures. Following the sense of success or failure, the diet are sustained or abandoned accordingly. Therefore for the application of promoting health, an intervention strategy should be created a collect organized diet program in a social level not a private level.

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The Purchasing Behavior of Fashion Goods According to Life Style and Role Model of Preteen Generation (프리틴세대의 라이프스타일과 역할모델에 따른 패션상품 구매행동)

  • Kwon, Yu-Jin;Yoo, Tai-Soon
    • Fashion & Textile Research Journal
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    • v.7 no.3
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    • pp.291-300
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    • 2005
  • The purpose of this study is to investigate, analyze the purchasing behavior of fashion goods according to life style and role model of preteen generation, and provide manager or marketing planner for the reference data so that they can understand preteen generation and make proper strategy efficiently. So called, preteen market focusing on 1014 generation (from ten to fourteen years old) is highlighted. This generation created between the year 1989 to 1993 after Seoul Olympic monopolize parent's love in abundant economic environment and rise to the core of consumption subject. Products aiming at this preteen generation continuously though consumption mind was shrunk greatly due to recession. Only 2~3 years before preteen market was regarded as grey zone which doesn't belong to not only children (between six and nine years old) but also teenagers (between fifteen to eighteen years old). But in recent day their purchasing powers have increased rapidly and age group is divided on details, so that preteen market has become a niche market. Subjects were 333 persons consisting of students in the 4th~6th grade of primary school and the 1st~2nd grade of middle school in Daegu city. Measuring instruments are as follows: 5questions to differentiate preteen generation, 22 questions to measure life style, 17questions (which have six sub-factors such as purchase motive, factor of product selection, utilization of informant, purchase time, purchase place, and purchase method) to measure the purchase behavior of fashion goods measurement, and 16 questions (which have four sub-factors such as parent, entertainer & sports stars, brothers and sisters, friends) to measure model of role. Statistical data were processed by SPSS 10.0 programs. Frequencies, Factor analysis, Cluster analysis, ANOVA, Cross analysis, Multiplex regression analysis, and Duncan's multiple range test were carried out.

Effect of height-to-width ratio on composite wall under compression

  • Qin, Ying;Yan, Xin;Zhou, Guan-Gen;Shu, Gan-Ping
    • Steel and Composite Structures
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    • v.36 no.5
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    • pp.507-519
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    • 2020
  • Double skin composite walls are increasingly popular and have been applied to many safety-related facilities. They come from the concept of composite slabs. Conventional connectors such as shear studs and binding bars were used in previous studies to act as the internal mechanical connectors to lock the external steel faceplates to the concrete core. However, the restraint effects of these connectors were sometimes not strong enough. In this research, a recently proposed unique type of steel truss was employed along the wall height to enhance the composite action between the two materials. Concrete-filled tube columns were used as the boundary elements. Due to the existence of boundary columns, the restraints of steel faceplates to the concrete differ significantly for the walls with different widths. Therefore, there is a need to explore the effect of height-to-width ratio on the structural behavior of the wall. In the test program, three specimens were designed with the height of 3000 mm, the thickness of 150 mm, and different widths, to simulate the real walls in practice. Axial compression was applied by two actuators on the tested walls. The axial behavior of the walls was evaluated based on the analysis of test results. The influences of height-to-width ratio on structural performance were evaluated. Finally, discussion was made on code-based design.

A Study on Analysis and Modification of OAK Metadata Elements (OAK 메타데이터 요소 분석 및 수정(안) 제안에 관한 연구)

  • Rho, Jee-Hyun;Lee, Eun-Ju;Lee, Mihwa
    • Journal of Korean Library and Information Science Society
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    • v.48 no.1
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    • pp.137-160
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    • 2017
  • OAK(Open Access Korea) is a national repository project to support free access to Korea's open access knowledge information. However various problems and limitations are recognized when organizing and sharing metadata with OAK-IR system. This study aims to suggest a modified metadata standard to improve the quality of OAK metadata. To the end, this study analyzed all metadata elements used by OAK participating organizations and compared the metadata with the metadata of other typical repository systems. In details, metadata organized in 17 OAK participating organizations were analyzed with their metadata specifications, input data examples, and practitioner interviews. And a case study on DSpace, EPrints, BEPress, ETD-db, dCollection was conducted. The final modified OAK metadata elements were suggested through group discussion and coordination by the practitioners of OAK participating organizations, OAK supervisors, and the developers of OAK-IR system.

Tasks for the Separation of Prescribing and Dispensing medicinal herbs in Traditional Korean Medicine (한의약분업과 관련된 여러 가지 문제)

  • Lee, Hai-Woong;Kim, Hoon;Kim, Gyeong-Cheol;Kim, Jong-Hwan;Shin, Woo-Jin;Park, Dong-Il;Hwang, Won-Duk
    • Journal of Korean Medical classics
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    • v.23 no.1
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    • pp.133-142
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    • 2010
  • Preconditions for the separation of prescribing and dispensing medicinal herbs in Traditional Korean Medicine are classification of medicinal herbs for general public and special medical uses, establishment of national medicinal herb distribution company of governmental base, restriction in purchase of medicinal herbs for special medical use, partnership between doctors and pharmacists of Traditional Korean Medicine, and coverage of herbal medicine-based medication in national health insurance, etc. The number of Traditional Korean Medicine Pharmacists which was born during 'the herbal medicine conflict' initiated in 1993, goes over 1,000 and will increase by 120 annually. The number of Traditional Korean Medical Doctors is over 17,000 and increases by 850 annually. So in order to engage partnership between two groups, the government have to arrange the number of outputs of each group. Standardization and classification of diagnosis and diseases in Traditional Korean Medicine is a matter of course in the separation of prescribing and dispensing medicinal herbs. Related societies and academies need to do researches with governmental fund first. After these works, we can launch a task force team for implementation of process for the separation of prescribing and dispensing medicinal herbs in Traditional Korean Medicine properly. Entering the national health insurance system for full coverage of Korean Medicine care service will be essential for the patients. Implementation the separation of prescribing and dispensing medicinal herbs in Traditional Korean Medicine would be the core of health insurance coverage for medication.

Elastography for Breast Cancer Diagnosis: a Useful Tool for Small and BI-RADS 4 Lesions

  • Liu, Xue-Jing;Zhu, Ying;Liu, Pei-Fang;Xu, Yi-Lin
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.24
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    • pp.10739-10743
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    • 2015
  • The present study aimed at evaluating and comparing the diagnostic performance of B-mode ultrasound (US), elastography score (ES), and strain ratio (SR) for the differentiation of breast lesions. This retrospective study enrolled 431 lesions from 417 in-hospital patients. All patients were examined with both conventional ultrasound and elastography. Two experienced radiologists reviewed ultrasound and elasticity images. The histopathologic result obtained from ultrasound-guided core biopsy or operation excisions were used as the reference standard. Pathologic examination revealed 276 malignant lesions (64%) and 155 benign lesions (36%). A cut-off point of 4.15 (area under the curve, 0.891) allowed significant differentiation of malignant and benign lesions. ROC (receiver-operating characteristic) curves showed a higher value for combination of B-mode ultrasound and elastography for the diagnosis of breast lesions. Conventional ultrasound combined elastography showed high sensitivity, specificity, and accuracy for group II lesions (10mm${\leq}20mm$). Elastography combined with conventional ultrasound show high specificity and accuracy for differentiation of benign and malignant breast lesions. Elastography is particularly important for the diagnosis of BI-RADS 4 and small breast lesions.

Experiences and Process of Patients' Healing Relation with Nurses (환자-간호사간의 치유적 관계형성 경험과 과정)

  • Kang, Byung-Ok;Chi, Sung-Ai
    • Journal of Korean Academy of Nursing Administration
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    • v.1 no.1
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    • pp.112-131
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    • 1995
  • The purpose of this study is to know experiences and process of patients' healing relation with nurses. This study had been conducted from July to September in 1994. The subjects were 7 patients who had hospitalized within 10 days at general surgery unit in C university hospital. The data were collected through in-depth interview and observation on the basis of Grounded Theory. In-depth interview were performed 3-6 times for each patient and taken 10-15 minutes at once. The result were as follows : (1) The main concepts are worry to operation, worry to hospital environment, worry to their children, worry to nurses, general appraisal, appraisal of appearance, appraisal of attitude, appraisal of nurses' response, appraisal of nurses' help, interest to patients, appraisal of explanation, appraisal of direct nursing, appraisal of nursing role, appraisal of nursing fairness, empathy, feeling of jung, discontent exposure, content, rapport. (Jung is a unique feeling that appeared in only korean culture) (2) The main categories are worry, general appraisal, concrete appraisal, empathy, and rapport. (3) These process is worry, appraisal, empathy, and rapport in the order. (4) The core category is the need of relation formation. The hospitalized patients have had need of relation formation with nurses. In order to satisfy this need, patients in the early of hospitalization had the worries to nurses, hospital environment, their children and themselves. The more patients have information about themselves, the more they have worries. In addition to, patients have general appraisal through the first impression or feeling to nurses. A time goes by, general appraisal has changed concrete appraisal. High educated group (above bachelor degree) have expressed concretely and variousely their needs. The patients who have empathy to nurses are content with nurses and form rapport to be shown frankly thier discontents. Therefore, patients' healing relation formation is the process of being filled up the need of relation formaton with Nurses. As mentioned above, researcher suggests that nurses need study nursing strategies to make earlier the last phase of the healing relation formation, rapport.

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Study on Manual of Guideline Book for Combined Medicaion of the Oriental and the Western Drugs in the Disease of the Aged (노인성질환의 한.양약 병용약물사용지침서 작성 매뉴얼에 관한 연구)

  • Jeon, Won-Kyung;Seo, Bu-Il;Han, Chang-Hyun;Kim, Dae-Jun
    • The Korea Journal of Herbology
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    • v.26 no.1
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    • pp.21-27
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    • 2011
  • Objectives : This study aimed to design manual of guideline book for combined medicaion of the oriental and the western drugs in the disease of the aged. Method : First, we collected informations about guideline book for drug medication, and we investigated wishes of professors who are working for an oriental medicine at universities. Result & Conclusion : 1. The greater part of professors recognized necessity of guideline book for combined medicaion of the oriental and the western drugs. 2. The basic stages of framing guideline book for combined medicaion of the oriental and the western drugs are as follows. The first step is planning of framing guideline book for combined medicaion of the oriental and the western drugs. The second step is organization of framing group and advisory committee for guideline book. The next steps are searching the core of items and making a searching all the literature and estimating the literature. And then, we should complete basic contents of guideline book in a row, and those must be examined thoroughly by external experts. Finally we can make public the guideline book for combined medicaion of the oriental and the western drugs. If there are reform contents in the guideline book, we can amend contents and make public the revision guideline book again. 3. We need guideline information center for combined medicaion of the oriental and the western drugs in the disease of the aged for framing, wide-spread and development of guideline book. 4. We think that the guideline information center should be composed of a steering committee, a committee of controlling informations and advisory committee for guideline book.

A Study on the Employment Effects of the Digital Bio-healthcare Industry (디지털바이오헬스케어산업의 고용유발효과에 관한 연구)

  • Jang, Pilho;Kim, Yongwan;Jun, Sungkyu;Lee, Changwoon;Jung, Myungjin
    • Journal of Information Technology Services
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    • v.19 no.2
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    • pp.23-35
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    • 2020
  • The development of digital technology is changing the paradigm of the healthcare industry to preventive and consumer-oriented. The combination of the ICT industry and the bio-healthcare industry is emerging as a core industry in the era of the Fourth Industrial Revolution. The Korean government has also selected the bio-healthcare industry as one of the three key future development industries. In May, the government announced its bio-health industry innovation strategy and set a goal of 300,000 employees. Therefore, analyzing the effects of employment on the related industries of the digital bio-healthcare industry is very important for the establishment of future industrial and technology development policies. The research method restructures the integrated classification of 32 industries into 34, including the digital bio-healthcare industry, using the classification criteria of the government and professional institutions, and then reorganizes the digital bio-healthcare industry into eight industries classified as one industry group. The analysis data was taken from the Bank of Korea's 2019 data. Various trigger coefficients and ripple effects coefficients were rewritten using the analysis method of the Input-output Statistics. The analysis of the results compares the employment-induced effects of the digital bio-healthcare industry and the ripple effects of related industries in production, investment and value-added. In addition, in terms of investment effect, the effects of in-house and related industries were compared. It is hoped that the results of this study will be used to establish employment and industrial policies.