• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.8 no.4
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• pp.401-410
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• 2003

Three beaches of the Seogwang-ri coast in the western part of Wu Island, Jeju-do, are solely composed of rhodoliths (red algal nodules). The beach sediments are coarse sand to granule in size and they show the banded distribution according to size. Commonly the larger pebble-sized rhodoliths are concentrated near the rocky coast, resulting from the transportation of the nodules from shallow marine environments by intermittent typhoons. Based on the internal texture of the rhodoliths, it appears that crustose red algae, Lithophyllum sp., is the main contributor for the formation of the rhodolith. The coarse sand to granule-sized grains show that they started to grow from the nucleus as rhodoliths, but the surface was severely eroded by waves. However, the pebble to cobble-sized grains exhibit the complete growth pattern of rhodoliths and sometimes contain other calcareous skeletons. It is common that encrusting red algae are intergrown with encrusting bryozoan. The surface morphology of rhodolith tends to change from the concentric to domal shape towards the outer part. This suggests that the rhodolith grew to a certain stage by rolling, but it grew in more quiet condition without rolling as it became larger. Aragonite and calcite cements can be found in the pores within rhodoliths (conceptacle, intraskeletal pore in bryozoan, and boring), and this means that shallow marine cementation has occurred during their growth. Growth of numerous rhodoliths in shallow marine environment near the Seogwang-ri coast indicates that this area has suitable oceanographic conditions for their growth such as warm water temperature (about 19$^{\circ}C$ in average) and clear water condition due to the lack of terrestrial input of volcanoclastic sediments. Fast tidal current and high wave energy in the shallow water setting can provide suitable conditions enough for their rolling and growth. Typhoons passing this area every summer also influence on the growth of rhodoliths.

• Korean Journal of Psychosomatic Medicine
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• v.25 no.2
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• pp.176-184
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• 2017

Objectives : Middle aged women with depression often experience hot flush symptoms. It is still unclear about the association between depression and hot flush symptoms. Therefore, we investigated hormonal profile, functional somatic symptoms, coping styles and attitude for menopause between depressed women with hot flush and those without hot flush. Methods : This study included 33 depressed patients with hot flush symptoms and 33 depressed patients without hot flush symptoms. Hot flush was confirmed through prospective daily symptom ratings for a week. Subjects' coping styles were assessed by the stress coping checklist. Somatic symptoms were assessed by the Patient Health Questionnaire-15(PHQ-15). Sex hormonal levels were assayed by a radioimmunoassay. The Brief World Health Organization Quality of Life Assessment Instrument(WHOQOL-BREF) was used to evaluate quality of life. Results : In coping style, depressed women with hot flush symptoms used less 'problem-centered coping'($13.15{\pm}3.17$) and 'search for social support'($11.83{\pm}2.84$) than those without hot flush symptoms($15.17{\pm}3.1$, p=0.028 ; $14.25{\pm}3.22$, p=0.009 ; respectively). Depressed women with hot flush symptoms showed more negative attitude toward post-menopause, but its statistical significance was marginally insufficient(p=0.059). We did not find any group differences in sex hormonal levels and somatic complaints assessed by the PHQ-15. The score of social relationship domain of WHOQOL-BREF was significantly lower in subjects with hot flush symptoms($8.62{\pm}2.04$) than subjects without hot flush symptoms($9.71{\pm}1.65$ ; p=0.044). Conclusions : Among middle aged women with depression, the manifestation of hot flush symptoms was associated with coping styles and attitude for menopausal transition. Hot flush symptoms in depressed women negatively influence quality of life, so clinicians actively perform therapeutic approach in case of depressed patients with hot flush symptoms. In case of depressed patients who present hot flushes, cognitive behavior therapy or stress management might be an effective treatment option in company with antidepressants or hormonal treatment. Later, longitudinal study will be needed to evaluate risk factor, cause and effect associated with hot flush and depression.

• Korean Journal of Clinical Pharmacy
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• v.20 no.2
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• pp.138-144
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• 2010

The results from eight randomized controlled studies demonstrate that venlafaxine is effective in the treatment of hot flashes with tolerable adverse effects. Based on the results of the above studies, venlafaxine can be recommended for the treatment of hot flashes. However, there are limitations in the above studies. The inclusion criteria of 5 studies reviewed in this paper was breast cancer patients, so it's hard to apply the results to the general population in clinical practice. Also 5 studies had less than 100 subjects included, and 18-week study was the longest one among studies reviewed in this paper. Therefore, large and long-term clinical studies with the general population should be conducted to use venlafaxine for the treatment of hot flashes in clinical practice.

• Korean Journal of Clinical Pharmacy
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• v.21 no.4
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• pp.376-382
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• 2011

The results from eight clinical studies demonstrate that citalopram and escitalopram could be an effective option in the treatment of hot flashes with tolerable adverse effects. However, there are limitations in the above studies. The inclusion criteria of 2 studies reviewed in this paper was breast cancer patients, so it's hard to apply the results to the general population in clinical practice. Also 4 studies had less than 50 subjects included, and the duration of study was 8 weeks or less in 7 studies reviewed in this paper. Moreover, only 4 studies were randomized, placebo-controlled trials (3 for citalopram and 1 for escitalopram). Therefore, further randomized, double-blind, placebo-controlled studies with the general population should be needed to use citalopram and escitalopram for the treatment of hot flashes in clinical practice.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.3 no.3
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• pp.124-141
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• 1998

The objectives of this study are to investigate the trace (minor) elemental and isotopic compositions of calcitic skeletons, such as barnacle, echinoid, branching and encrusting calcareous algae and oyster, from the eastern coast of Korean peninsula and Cheju Island, and to compare their variations with latitude, that is, the temperature of ambient seawater at which the skeletons grew. Articulated and encrusting red algae are composed of high-Mg calcite (7-21 mol% $MgCO_3$). Echinoids are also composed of high-Mg calcite (7-15 mol% $MgCO_3$). Whereas barnacles are composed of low-Mg calcite (1-5 mol% $MgCO_3$). The Mg compositions of articulated red algae, barnacle and oyster tend to increase with increasing water temperature, whereas those of encrusting red algae and echinoid do not show any trend. Sr compositions of articulated red algae, echinoid and barnacle tend to decrease with increasing water temperature, whereas those of encrusting red algae and oyster do not show any trend. Mn compositions of articulated red algae and encrusting red algae decrease with an increase of water temperature, whereas those of echinoid and barnacle do not show any trend. Fe compositions of articulated red algae tend to decrease with increasing water temperature, whereas those of encrusting red algae and oyster increase. Fe compositions of echinoid and barnacle do not show any trend with water temperature variations. Ba compositions of echinoid and low-magnesium calcitic skeletons do not show any trend with water temperature variations. Ba compositions of articulated red algae tend to decrease with increasing water temperature, whereas those of encrusting red algae increase. Cd and Pb compositions of all the skeletons tend to increase with increasing water temperature. Cu compositions of encrusting red algae increase with increasing water temperature, whereas articulated red algae, echinoid, barnacle and oyster do not show any trend. Zn compositions of high-magnesium calcitic skeletons and low-magnesium calcitic skeletons do not show any trend. Estimated water temperatures from oxygen isotopic data of all the skeletons except for the barnacle arc higher than the range of temperature of the shallow seawater of the East Sea and around Cheju Island. The oxygen isotopic compositions of oyster and echinoid are well clustered, and they do not show any trend with increasing water temperature. Therefore, this could reflect that the organisms have not secreted their shells in oxygen isotopic equilibrium with ambient seawater due to vital effect. Thus, the oxygen isotopic composition of barnacle can potentially be utilized for paleotemperature estimate whereas those of other organisms in this study may not be useful.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1994.04a
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• pp.195-195
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• 1994

병원별 총 추적기간은 602-4,137 인년 이었으며, 병원별 대상자 1인당 추적일수의 중앙값은 34.5-61일 이었다. 병원별 추적 완료율도 35.3-92.3%로 다양하게 나타났다. 대상자중 칼슘차단제의 혈관확장효과에 따른 부작용들의 8주간 누적 발생율을 보면, 안면홍조 23.3%, 두통 13.5%, 심계항진 13.3%, 어지러움 7.6%, 하지부종 6.6% 였다. 그 외 부작용으로는 변비 13예, 소화장애 8예, 오심 6예, 치은비대, 안면부종, 피로감이 각각 2예, 탈모증, 불면증, 허약감, 피부질환, 호흡곤란, 손발저림, 발한, 구강건조 등이 각각 1예 있었다. 안면홍조의 발생율이 남자(12.9%)보다 여자(29.9%)에서 높았으며, 투여한 약제에 따라서 Nitrendipine 34.0%, Nifedipine 26,6%, Nicardipine 17.8%, Amlodipine 12.2%로써 약제별로 차이가 있었다. 두통의 발생율은 40세 미만 32.8%, 40-54세 15,8%, 55세 이상 10.5%로써 연령이 증가할수록 발생율이 낮았다. 하지부종의 발생율도 남자(3.4%)보다 여자(8.6%)에서 높았으며, 투여한 약제에 따라서 Nitrendipine 15.2%, Nifedipine 10.0%, Amlodipine 2, 1%, Nicardipine 0%로써 약제별로 차이가 있었다. 안면홍조가 발생한 환자에서 약물을 계속 투여시 2주후에 63.5%, 4주후에 77.0% 6주후에 88.5%가 소실하여 최초 안면홍조가 발생한 환자중 11.5%에서만 증상이 남아있었다. 약물투여를 중단하게 된 사유는 안면홍조와 두통이 각각 15예, 심계항진 4예, 어지러움 2예, 변비 및 안면부종이 각각 1예로 나타났다.

• 건강소식
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• v.36 no.12
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• pp.28-29
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• 2012

날씨가 추워지면서 혈관 수축이 제대로 기능하지 못해 심각해지는 질환이 바로 안면홍조증 이다. 단기간에 치료하기 어렵고, 많은 사람들이 '이러다 괜찮아지겠지'라고 생각하지만 내버려두면 시간이 흐를수록 악화되기 십상이다. 꾸준한 치료와 관리가 필요하다.

• Microbiology and Biotechnology Letters
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• v.39 no.3
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• pp.224-237
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• 2011

For establishing the efficacy against breast cancer occurrence, women's mammographic breast density and hot flush remission related to pre and post-menopausal symptoms were selected as biomarkers. Meta analysis applied the final selection of 40 papers from Medline to assess the efficacy of isoflavone-rich soy or supplements versus placebo under randomized controlled trials. Interestingly, the exposure to the purified isoflavones was more effective than the exposure to the crude extract of soy isoflavones for hot flush suppression. The length and the amount of dosage dependency is the most appropriately suggested to be one year long with 50~100 mg/day of isoflavone-rich soy or supplements. Funnel plots was used to interpret the results, overall effect of isoflavones on breast density in post-menopausal women was revealed to be less effect [effect size: 0.062, 95% confidence interval (CI): 0.005 to 0.12], than that of pre-menopausal women (effect size: 0.101, CI: -0.003 to 0.205). The reason why breast density was found higher among the pre-menopausal than the post-menopausal women is that the phytoestrogens of dietary isoflavones were antagonized against estrogen by the basis of estrogen receptor binding affinity. Overall, the Meta analysis reported that isoflavone had limited influence on breast density by suppressing the expansion by only 2%, while it was more effective to suppressing the hot flush, showing a dramatic decrease of 23%.

• Korean Journal of Heritage: History & Science
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• v.46 no.1
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• pp.290-317
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• 2013

The objectives of this study are to investigate the natural heritage and scientific value of various geosites on Udo Island, and to evaluate the sites as natural monuments and as world natural heritage properties. Udo Island includes a variety of geoheritage sites. Various land forms formed during the formation of the Someori Oreum formed by phreatomagmatic eruptions. The essential elements for the formation of Udo Island are the tuff cone, overflowing lava and overlying redeposited tuff sediments. Various coastal land forms are also present. About 6,000 years B.C., when sea-level rose close to its present level due to deglaciation since the Last Glacial Maximum, carbonate sediments have been formed and deposited in shallow marine environment surrounding Udo Island. In particular, the very shallow broad shelf between Udo Island and Jeju Island, less than 20 m in water depth, has provided perfect conditions for the formation of rhodoids. Significant amounts of rhodoids are now forming in this area. Occasional transport of these rhodoids by typhoons has produced unique beach deposits which are entirely composed of rhodoids. Additional features are the Hagosudong Beach with its white carbonate sands, the Geommeole Beach with its black tuffaceous sands and Tolkani Beach with its basalt cobbles and boulders. Near Hagosudong Beach, wind-blown sands in the past produced carbonate sand dunes. On the northern part of the island, special carbonate sediments are present, due to their formation by composite processes such as beach-forming process and transportation by typhoons. The development of several sea caves is another feature of Udo Island, formed by waves and typhoon erosion within tuffaceous sedimentary rocks. In particular, one sea cave found at a depth of 10 m is very special because it indicates past sea-level fluctuations. Shell mounds in Udo Island may well represent the mixed heritage feature on this island. The most valuable geoheritage sites investigated around Udo Isalnd are rhodoid depostis on beaches and in shallow seas, and Someori Oreum composed of volcanoclastic deposits and basalt lava. Beach and shallow marine sediments, composed only of rhodoids, appear to be very rare in the world. Also, the natural heritage value of the Someori Oreum is outstanding, together with other phreatomagmatic tuff cones such as Suwolbong, Songaksan and Yongmeori. Consequently, the rhodoid deposits and the Someori Oreum are worth being nominated for UNESCO World Natural Heritage status. The designation of Someori Oreum as a Natural Monument should be a prerequisite for this procedure.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.269-270
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• 2000

홍조 지누아리류(Grateloupia spp.)는 독특한 향과 감촉을 가진 유용 해조류로서 강원도 지역에는 옛부터 식용으로 널리 이용되어 왔다. 그러나 산업적 생산량이 자연상태의 생물량에 한정되어 있어서 지역적 한계를 벗어나 그 우수한 풍미를 일반화시키지 못하고 있다. 본 연구에서는 강원도 연안에서 채집한 지누아리사촌(Grateloupia acuminata)의 사분포자체를 조직배양하여 재생체를 유도하고, 이로부터 사분포자를 얻어 배양조건에 따른 포자의 발아와 생장 경향을 파악하였다. 양식에 사용된 종묘는 사분포자로부터 얻은 배우체의 유엽으로서 이의 바다양성을 통하여 대량 양식의 가능성을 파악하고자 하였다. (중략)