• Journal of Plant Biotechnology
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• v.36 no.2
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• pp.124-129
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• 2009

In general, the root color of Codonopsis lanceolata is white, but red or blue-colored root is found at a low frequency in nature. Red or blue-colored roots have scarcity value, thus farmers wish to produce colored roots. The factors for determining the color of roots are unclear whether the color is controlled by genetically or simply by environmentally such as soil environment. Using in vitro culture system which is advantageous for setting of the same culture condition, we analyzed the physiological and morphological characteristics and genetic differences among red-, blue- and white lines of C. lanceolata. In the red colored roots, stems of in vitro cultured plantlet were colored in dark red pigment. Histological analysis revealed that the red pigment was accumulated in the outer cortex layer of the stem and determined as anthocyanin. Chlorophyll contents in red root lines were higher than those in white- and blue root lines. Plantlets from red roots were smaller in both shoot length and total leaf area than those from white- and blue roots. Genetic differences among the three different colored C. lanceolata were determined by RAPD (Randomly Amplified Polymorphic DNA) analysis. Each line of colored roots had clear DNA polymorphism. These results indicate that the occurrence of red- and blue colored roots in nature was determined by genetic factors rather than soil enviromental conditions.

• Journal of Korean Society of Forest Science
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• v.100 no.4
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• pp.639-649
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• 2011

The purpose of this study aimed to analyze factors on motives to tree burial and choice conditions to tree burial site in order to suggest policy direction for the desirable settlement of tree burial. For those purpose, this study performed questionnaire, targeting 522 visitors of funeral hall all around Korea. As the result, the factors of motives to tree burial were extracted as follows: funeral ceremony progressed along with trees, simplicity, memorial site's easy insurance, environmental friendliness and consideration toward descendants. The factors on choice conditions to tree burial sites were extracted as follows: beauty of natural scenery, emotional mood as a memorial site, convenience, stability and economic feasibility. Based on the results of factor analysis, this study suggested policies related to motives to tree burial as follows: develop various types of tree burial sites, develop a funeral ceremony suitable for tree burial, come into wide use of tree burial as a social welfare service, develop tree burial methods capable of many burials, and improve professionalism to manage tree burial system. In addition, this study proposed related choice conditions to tree burial sites as follows: establish natural forest scenery, convert existing graveyards into tree burial sites, select easily accessible places for tree burial sites, form tree burial sites as places for both rest and memory, and reduce using fee of tree burial site.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2001.04a
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• pp.38-40
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• 2001

• Molecules and Cells
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• v.28 no.4
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• pp.383-388
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• 2009

The dehydration responsive element binding protein 2C (DREB2C) is a dehydration responsive element/C-repeat (DRE/CRT)-motif binding transcription factor that induced by mild heat stress. Previous experiments established that overexpression of DREB2C cDNA driven by the cauliflower mosaic virus 35S promoter (35S:DREB2C) resulted in increased heat tolerance in Arabidopsis. We first analyzed the proteomic profiles in wild-type and 35S:DREB2C plants at a normal temperature ($22^{\circ}C$), but could not detect any differences between the proteomes of wild-type and 35S: DREB2C plants. The transcript level of DREB2C in 35S: DREB2C plants after treatment with mild heat stress was increased more than two times compared with expression in 35S:DREB2C plants under unstressed condition. A proteomic approach was used to decipher the molecular mechanisms underlying thermotolerance in 35S:DREB2C Arabidopsis plants. Eleven protein spots were identified as being differentially regulated in 35S:DREB2C plants. Moreover, in silico motif analysis showed that peptidyl-prolyl isomerase ROC4, glutathione transferase 8, pyridoxal biosynthesis protein PDX1, and elongation factor Tu contained one or more DRE/CRT motifs. To our knowledge, this study is the first to identify possible targets of DREB2C transcription factors at the protein level. The proteomic results were in agreement with transcriptional data.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.32 no.4
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• pp.325-339
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• 2022

Objective: This study was to perform to identify the distribution characteristics and related factors of work-related low back pain among manufacturing workers in Korea. Methods: We analyzed the third(2011) through sixth(2020) Korean Working Conditions Survey. This study examined changes in the prevalence of work-related low back pain among manufacturing workers and related factors, including demographic characteristics and working conditions. Results: The prevalence of work-related low back pain showed a general tendency to increase during the study periods except for the 5th wave. The prevalence of work-related low back pain was higher in women than in men. The prevalence increased with increasing age and decreased with higher educational attainment. This trend was observed in all survey waves. The prevalence ratios for work-related low back pain according to working conditions varied over the survey period. In general, workers with manual jobs, long working hours, and exposure to tired or painful postures showed relatively higher prevalence ratios than did their counterparts. Providing Information on health and safety, perception that work affects health, and experience of presenteeism were identified as influencing factors for work-related low back pain. Although the working environment is improving, work-related back pain is on the rise. A multifaceted study on risk factors for work-related low back pain is needed. Conclusion: Work-related low back pain is a significant factor affecting the working population's quality of life. The prevalence of work-related low back pain showed a tendency to increase during the study periods. A multifaceted study on risk factors for work-related low back pain is needed.

• The Korean Journal of Ecology
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• v.15 no.4
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• pp.329-335
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• 1992

Bionomics of diplopodes was studid near chongyongchi in the chiri mountains from sept. 1990 to dec. 1991 by surveying 10 sample sites at 12 occasions. During this period 13 species of diplopodes from 11 genera, 8 families, and 6 orders were collected. Species were more diversed under quercus mongolica followed by quercus serrata and pinus densiflora sp. epenerchodus koreanus bifidus, and e. k. koreanus were found in all sample sites and these 6 species have been reported to be distributed throughout south korea. yamasinaium sp., riukiaria semicirculalis, parafontaria koreanus, and sicotanus eurygaster were found only under quercus mongolica community and postulated to be related to diet meanwhile other enviromental factors such as temperature, soil ph, and altitude should be taken into consideration. Species diversity index was higher at altitude 700m followed by at 900m, 1, 000m, 800m, 600m, 500m, 1, 100m, 400m, 300m, and 1, 200m in discending order likely due to the enviromental factors such as climatic and edaphic affects, disturbance by human, and degree of floral diversity. Species similarity index was highest 0.78 between altitude 500m and 600m sample sites could be grouped into 3, namely first 300m, 400m, second 500m, 600m, 700m, 1, 000m, 800m, 900m, and third 1, 100m, 1, 200m.

• Journal of Korean Society for Geospatial Information Science
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• v.22 no.3
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• pp.71-77
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• 2014

People in the modern society want to live under safe and comfortable circumstances. As our society, however, is sharply developing, crimes are getting smarter and more difficult to treat. Above all, they often take place around us, and we are trying to cope with them variously in order to make our lives more comfortable and safer. In particular, five major crimes(Murde, Robber, Rape, Violence, Theft ) that most frequently occur in the real life are very threatening and fearful so it is necessary to deal with them with "the scientific method." In this study, therefore, we searched the frequency of crime by its type and analyzed spatial characteristics between crimes and criminal factors by using regression analysis and correlation analysis based on the crime data that has occurred around Geumjeng-gu, Busan so that we can confront five major crimes.

• Journal of Families and Better Life
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• v.14 no.4
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• pp.263-276
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• 1996

The purpose of this study is to explore various environmental factors that explain parenting practices. Those factors considered are stress and characteristics of single-mother/child together with psychological distress experienced by the single mother. A total of 285 poor single mothers with a child attending elementary school or junior high school completed a structured questionaire. The relationships among the variables were analyzed by the path analysis. The results showed that poor single mothers rely on affectiv $e^portive involvement more frequently then punitive/inconsistent discipline. It is also confirmed that the enviromental factors such as financial stress living environmental stress and job status play important roles in determining the quality of parenting practices with the mediating role of psychological distress.ss.

• Journal of the Korean Home Economics Association
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• v.33 no.1
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• pp.45-60
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• 1995

The purpose of this study is to investigate some influencing factors related to the perception and the management behavior on the environmental pollution of the housewives in the metropolis. small city and Kun. This study is also to provide some knowledge and information on the environmental preservation. 2300 questionaires were distributed to the housewives from the end of April to the end of May in 1994. The 1850 quentionaires were obtained and the 1490 data were analyzed by frequency, percentage, mean, t-test, F-test, Duncan's prohoc test, stepwise multiple regression, path analysis and pearson's correlation. The most hypotheses of this study were accepted. Based on the findings of this study, the degree of concerns on the environmental provlems, the enviromental education, the einvironmental articles and the paticipation of the environmental events were the most important factors on the knowledge of the environmental preservation and the perception of the environmental pollution. And these factors were exerted important effects on the management behavior on the environmental preservation.

• Journal of the Speleological Society of Korea
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• v.1 no.1
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• pp.17-22
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• 1975

The Kosudong-gul Cave at kosu-ri, Daegang-myon, Danyang-gun, Chung Chong Bug-do, Province was surveryed by this author on the 3rd of Nov. 1973, 6th of Jan. 1974, 30th of Aug. and 13th of Sept. 1975 through over several times field trips. Yoechon-gul Cave at Yoechon-ri, Gagok-myon, Danyang-gun, Chung Chong Bug-do, Province was surveyed by this author on the 30th of August, 1975. The enviromental factors of both caves checked the siftations for air temperature, water temperature, moisture and pH, as well as the faunae f both caves and ecollogically studieel them. Kosudong-gul Cave (1) The environmental factors checked was the same as table 1. (2) The fauna is 5 classes and 18 species and they classified as Troglobite......2 species-11.1％, troglophile.....5 species-27.7％, and trogloxene....11 species.-61.2％. Yochon-gul Cave (1)The environmental factor Checked was the same as table 2. (2) The fauna is 5 classes and 8 species and they classified as troglobite......1 species-11.1％, troglobite....4 species-44.4％ and trogloxene.....4 species-44.4%.