• Title/Summary/Keyword: Spring and Autumn Period

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Feeding Habits of Javelin Goby Synechogobius hasta on Tide Flat in Sangnae-ri Suncheon, Korea (순천 상내리 갯벌역에 출현하는 풀망둑(Synechogobius hasta)의 식성)

  • Park, Jong Hyeok;Jeong, Jae Mook;Kim, Hyeon Ji;Ye, Sang Jin;Baeck, Gun Wook
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.48 no.6
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    • pp.982-987
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    • 2015
  • During the study period, a total of 158 individuals of Synechogobius hasta were collected. The range of body length (BL) was 15.4-44.5 cm. The stomachs of 26.6% of the individuals were empty. The most abundant prey was shrimp. Among shrimp, Exopalaemon orientis was the most abundant species, being present in 27% in %IRI (index of relative importance). Fishes and crabs were also abundant prey. Analysis of ontogenetic changes, suggested that shrimp were the main prey of S. hasta of two size classes (<20 and 20-25 cm). The proportion of shrimp decreased, but that of fishes and crabs increased, with increasing body length, beginning at the 25-30 cm size class. In spring, fishes were the dominant prey, while shrimps, and crabs and fishes dominated in autumn and winter, respectively.

Trend Analysis of GPS Precipitable Water Vapor Above South Korea Over the Last 10 Years

  • Sohn, Dong-Hyo;Cho, Jung-Ho
    • Journal of Astronomy and Space Sciences
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    • v.27 no.3
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    • pp.231-238
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    • 2010
  • We analyzed global positioning system (GPS)-derived precipitable water vapor (PWV) trends of the Korea Astronomy and Space Science Institute 5 stations (Seoul, Daejeon, Mokpo, Milyang, Sokcho) where Korea Meteorological Administration meteorological data can be obtained at the same place. In the least squares analysis, the GPS PWV time series showed consistent positive trends (0.11 mm/year) over South Korea from 2000 to 2009. The annual increase of GPS PWV was comparable with the 0.17 mm/year and 0.02 mm/year from the National Center for Atmospheric Research Earth Observing Laboratory and Atmospheric InfraRed Sounder, respectively. For seasonal analysis, the increasing tendency was found by 0.05 mm/year, 0.16 mm/year, 0.04 mm/year in spring (March-May), summer (June-August) and winter (December-February), respectively. However, a negative trend (-0.14 mm/year) was seen in autumn (September-November). We examined the relationship between GPS PWV and temperature which is the one of the climatic elements. Two elements trends increased during the same period and the correlation coefficient was about 0.8. Also, we found the temperature rise has increased more GPS PWV and observed a stronger positive trend in summer than in winter. This is characterized by hot humid summer and cold dry winter of Korea climate and depending on the amount of water vapor the air contains at a certain temperature. In addition, it is assumed that GPS PWV positive trend is caused by increasing amount of saturated water vapor due to temperature rise in the Korean Peninsula. In the future, we plan to verify GPS PWV effectiveness as a tool to monitor changes in precipitable water through cause analysis of seasonal trends and indepth/long-term comparative analysis between GPS PWV and other climatic elements.

Seasonal Bycatch Variations in the Shrimp Beam Trawl Fishery of Coastal Wan-do, Korea (완도 해역의 새우조망어업에서 발생한 부수어획물의 계절적 변동)

  • Oh, Chul-Woong
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.43 no.1
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    • pp.69-77
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    • 2010
  • We examined shrimp and bycatch species composition in the shrimp beam trawl fishery off Wan-do, Korea(in the major or fishing ground)from December 2004 to November 2005. We observed a total of 103, 072 individuals in 96 taxa. By densities of individuals, 96.97% were shrimps, 1.20% decapods, 1.10% fish, 0.30% cephalopods and 0.43% other species. By catch weight, 57.29% were shrimps, 26.33% fish, 6.82% decapods, 4.64% cephalopods and 4.92% other species. In spring, the dominant bycatch species by biomass were Okamejei kenojei, Lophiomus setigerus, and Charybdis bimaculata. In summer, the dominant species were Charybdis bimaculata, Muraenesox cinereus, and Paralichlhys olivaceus. In autumn, dominants were Okamejei kenojei, Conger myriasler, and Sefipinna tenuifilis, and in winter they were Okamjei kenojei, Chaeturichthys stigmatias, and Sillago japonica. Bycatch species composition and individual species abundances differed significantly among seasons, probably indicating that variations were related to the life history characteristics of bycatch species. The diversity index was highest in October (2.797) and lowest in July (1.012). The July dominance index (0.569) was much higher than in other months; evenness was highest in September (0.856) and lowest in July (0.374). During the study period, the bycatch-to-shrimp ratio of this fishery varied from 0.063 in February 2005 to 11.031 in May 2005, with a mean of 3.363 These temporal variations may be linked 10 variations in reproductive behaviors and migration patterns of the marine animals sampled.

Study of the correlation between postpartum joint symptoms and maternity season within 15 days after giving birth (출산 후 15일 이내에 나타난 관절증상과 출산계절의 상관성 연구)

  • Koo, Jin Suk;Kim, Yun Young;Seo, Bu Il
    • The Journal of Korean Medicine
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    • v.38 no.1
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    • pp.125-133
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    • 2017
  • Objectives: The purpose of this study is to investigate the correlation between postpartium joint diseases and maternal season. So it can prevent postpartum joint diseases and provide fundamental data about postpartum health care. Methods: The subject of the present study was 219 women (142 women who completed vaginal delivery and 77 women who delivered by cesarean section) who completed labor between November 1, 2013 and November 31, 2016, at the clinic of OB&GYN. They have been taking good care of their health at postpartum clinic in Andong Woori Women Hospital. We investigated the various symptoms and situation which occurred from the moment of hospital to postnatal admission health care period and oriental doctor examined the patients. We classified the symptoms by the age of patients, the method of delivery, the term of pregnancy, the body weight of infant, the weight change of mother and the way of feeding. Through data analysis, we investigated the correlation between maternal season and postpartum joint diseases. Results: Postpartum joint diseases were the most common among all symptoms after childbirth. Postpartum joint diseases were classified into shoulder area pain and low back pain. In low back pain, there was no significant difference between maternal season and postpartum joint diseases. In shoulder, wrist and finger pain, pain was the most severe at winter delivery. It was the most painful in winter, followed by autumn, spring and summer. Conclusion: There was a close correlation between postpartum joint disease manifestations and maternal season.

Analysis of Species and Tree-Ring Dating of Wood Elements Used for the Daewoongjeon Hall of Youngguksa Temple (영국사 대웅전 목부재의 수종 및 연륜연대 분석)

  • Son, Byung-Hwa;Park, Won-Kyu;Yoon, Doo-Hyung
    • Journal of architectural history
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    • v.15 no.2
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    • pp.23-38
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    • 2006
  • During the repair and restoration of the Daewoongjeon Hall of Youngguksa Temple, species identification and tree-ring dating for both present wood elements and charred ones excavated under the Hall, were conducted. The species of 74 wood elements of Daewoongjeon Hall, were identified as Pinus densiflora Sieb. et Zucc. and only 1 was identified as exotic Pinus species. The latter wood, which was used in the laths, seems to have been replaced during past repairs. Many documentary records and various artifacts pertaining to Youngguksa Temple are being excavated, but none described precisely the construction date of the present Daewoongjeon Hall. Also, from beneath the Daewoongjeon Hall, cornerstone and foundation of previous building and several charred wood elements were excavated. In comparing the direction of the stone columns of foundation of the previous structure and the existing Daewoongjeon Hall, the previous structure was rotated in an angle of approximately $15^{\circ}$. Therefore, in order to find the association of the previous structure with the present Daewoongjeon Hall, tree-ring dating was conducted. The dating of 41 original timbers and 14 roof-filling timbers of the present construction elements revealed that the last annual ring was of A. D. 1703 with complete latewood, indicating that those woods was cut some time between the autumn of 1703 and spring of 1704, and the building was erected in 1704 when we assume no period of wood storage. The year of the last annual ring of the charred elements, which were excavated from beneath the Daewoongjeon Hall, was analyzed as 1674. The cutting year of the woods used for the present building began in 1698, therefore, it can be presumed that the Daewoongjeon Hall before the fire was a structure that was elected shortly after 1674 and that a catastrophic fire occurred some time between 1674 and 1698.

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Report on The Incidence of rabies in Kangwon-do (강원도내 광견병 발생실태)

  • Kim, Jong-Sool;Chung, Dong-Su;Lim, Hwan;Yang, Yoon-Mo;Park, Yang-Soon;Sin, Myung-Kyun;Kim, Dong-Hoon
    • Korean Journal of Veterinary Service
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    • v.18 no.1
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    • pp.57-71
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    • 1995
  • During the period of 2 years from 1993 to 1994, epidemiological investigation were carried out each time the outbreak of rabies suspected cases were informed and all specimens were transported to the Kangwon-do Veterinary Service Lab. At the Lab., autopsy and laboratory examinations were conducted as well. The results obtained as follows 1. The dogs and cattles were confirmed to be infected with rabies virus by routine histopathological findings, indirect flulrescent antibody technique, and mouth inoculation test. 2. The total numbers of rabies occured in dogs and cattles were 9, 5 heads, respectively. The regional distribution of total of 14 heads were 9 heads in Chulwon, 2 heads in Hwachun, 1 head Yangku, 2 heads in Inje and the highest number of outbreaks were orrured in Chulwon. 3. Most of dogs showed furious type and dumb type found in only one dog. 4. Cattles showed the symtoms of uneasiness feeling, excitement, disturbance howling, the change of voice, sexual accelaration, foreign body swatting and attacked to human and ani-mal and found to be died after two or four days. 5. In the seasonal outbreaks of rabies, 8 heads of the highest incidence were occured in win-ter followed by 4 heads in autumn, 1 head in spring and 1 head in summer. 6. The first outbreaks of rabies was reported in Chulwon and then transmitted into Hwachun, Yangku and Inje in turn. 7 The infectious source was supposed to be wild animals such as laccon dog, badger etc. living around the D. M. Z.

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Study on the Present Status and Venereal Diseases of the Prostitutes in Pusan, Korea (부산지구(송도)(釜山地區(松島)) 윤락여성(淪落女性)에 대(對)한 현황(現況) 및 성병(性病)의 역학적고찰(疫學的考察))

  • Yang, Hak-Do;Oh, Yang-Hyo
    • The Journal of the Korean Society for Microbiology
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    • v.3 no.1
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    • pp.5-14
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    • 1968
  • Prostitutes living in Songdo beach in Pusan, for two years period (from September 4, 1964 to August 28, 1966) were investigated for the present status and Venereal Diseases. The following results were obtained. 1. Age distribution:The youngest was 18 years old and the oldest 29. The group between 22-25 years old was 72.8%, approximately three fourth of all prostitute. 2. Educational background: From illiterate to college graduated. The group of graduated primary school was 80.7%, approximately four fifth of all prostitutes. 3. Distribution of birth places: From all cities and provinces in Korea except Chejudo Island province. Kyongsang Namdo province was highest(24%), Kyongsan Pukdo province 18%, Pusan city 12%, and Seoul city 11%. 4. Monthly and weekly Venereal Diseases examination to prostitutes: Total examined cases were 7757, consisting of 323 monthly, and 75 weekly. Total numbers of disqualified persons were 592(7.63% of total examined), consisting of 25 monthly, and 6 weekly. 5. Clinical and laboratory findings of the rejected prostitutes at the Venereal Disease examination: Among total cases of rejected 592, gonococcal positive cases were 2.89%, staining by gram's method, cervical erosions 3.53%, and numerous pus cells but gonococcal negative 1.53%. 6. Seasonal distribution of prostitutes : Songdo beach is one of the famous sea shore sightseeing resort in Pusan. Therefore, numbers of prostitutes were increasing in hot season, summer and decreasing in cold season, winter. 7. Number of disqualified prostitutes at the Venereal Disease examination by seasonal trend: In autumn 18.04%, winter 8.68%, spring 5.85%, and summer 4.43%, in order as described, the decreasing tendency was observed. 8. Serolgical tests for syphilis: VDRL slide method and Kolmer-Wassermann reaction were performed to the prostitutes. STS were positive by VDRL slide method in 8.33-33.87%, Kolmer-Wassermann reaction in 8.33-27.42% of the prostitutes. The results of sero-positive of syphilis showed tendency toward gradually increase from 1964 to 1966. 9. Authors were observed only 1 case or soft chancer, but neither lymphogranuloma venereum nor granuloma inguinale were detected.

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Characteristics of the Seasonal Variation of the Radiation in a Mixed Forest at Kwangneung Arboretum (광릉수목원 혼합림에서 복사 에너지의 계절 변화 특성)

  • 김연희;조경숙;김현탁;엄향희;최병철
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.3
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    • pp.285-296
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    • 2003
  • The measurement of the radiation energy, trunk temperature, leaf area index (LAI), air temperature, vapor pres-sure, and precipitation has been conducted under a mixed forest at Kwangneung Arboretum during the period of 2001. Characteristics of the diurnal and seasonal variation of the radiative energy were investigated. The aerodynamic roughness length was determined as about 1.6 m and the mean albedo was about 0.1 The downward short-wave radiation was linearly correlated with the net radiation and its correlation coefficient was about 0.96. From this linear relation, the heating coefficient was calculated and its annual mean value was about 0.21 The albedo and heating coefficient was varied with season, surface characteristics, and meteorological conditions. The diurnal and seasonal variations of radiation energy were discussed in terms of the surface characteristics and meteorological conditions. In the daytime, during clear skies, net radiation was dominated by the shortwave radiation. In presence of clouds and fog, the radiation energy was diminished. At night, the net radiation was entirely dominated due to the net longwave radiation. There was no distinct diurnal variation in net radiation flux during the overcast or rainy days. The net radiation was strongest in spring and weakest in winter. The seasonal development in leaf area was also reflected in a strong seasonal pattern of the radiation energy balance. The timing, duration, and maximum leaf area and trunk temperature were found to be an important control on radiation energy budget. The trunk temperature was either equal or warmer than air temperature during most of the growing season because the canopy could absorb a substantial amount of sunlight. After autumn (after the middle of October), the trunk temperature was consistently cooler than air temperature.

Carcass Traits Determining Quality and Yield Grades of Hanwoo Steers

  • Moon, S.S.;Hwang, I.H.;Jin, S.K.;Lee, J.G.;Joo, S.T.;Park, G.B.
    • Asian-Australasian Journal of Animal Sciences
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    • v.16 no.7
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    • pp.1049-1054
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    • 2003
  • A group of Hanwoo (Korean cattle) steers (n=14,386) was sampled from a commercial abattoir located in Seoul over one year period (spring, summer, autumn and winter) and their carcass traits were collected. Carcass traits assessed by an official meat grader comprised degree of marbling, meat color, fat color, texture and maturity for quality grade, and back fat thickness, ribeye area and carcass weight for yield grade. A heavier carcass with a higher marbling score, more red meat color and white fat color received better quality grade (p<0.05). Regression analysis showed that the marbling score was the strongest attribute (partial $R^2=0.88$) for quality grade. Lighter carcasses with a thinner back fat and larger ribeye area received higher yield grade score. The back fat thickness was the most negative determinant of yield grade (Partial $R^2=-0.66$). The slaughter season had a little effect on quality and yield grades. As slaughter weight increased, back fat thickness and ribeye area increased linearly, whereas marbling score reached its asymptotic level at approximately 570 kg. As a consequence, quality grade showed a considerable improvement up to 570 kg, but increases in slaughter weight afterward showed a little benefit on quality grade. There was a clear curvilinear relationship between slaughter weight and yield grade in that the yield grade reached its highest point at approximately 490 kg and decreased afterward. These results suggested that 570kg at the age of 24 months might be the economic slaughter weight for quality grade but 490 kg for yield grade.

A Study on the Costume of the Ruling Classes in the Three Kingdoms Period (삼국시대 지배계층 복식문화 연구)

  • 이선재;양경애
    • Journal of the Korean Society of Costume
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    • v.39
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    • pp.181-196
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    • 1998
  • This study is about the similarities and the individualties of the traditional costumes in the ruling classes of Koguryo(高句麗), Bakjae(百濟), and Shilla(新羅). The analysis is based on the views of historical reformation on$\boxDr$Sam-gooksagi(三國史記)$\boxUl$Bongi(本紀). The costumes that were worn by the governing classes are categorized by the following, official duties, wars, ceremonies, and recreations(hunting). Up to the present time, there has been a great tendency to emphasize the similarities of the Three Kingdoms' costumes among most of academic researchers. However, the conceptions of individualities of the costumes among the Three Kingdoms were conceived by the facts that geological environments, political systems, social traditions, social aspects, and foreign affairs. The Three Kingdoms had different official rank systems along with official costume systems. Monopolization of official positions of the ruling parties tried to show their dignity and authority through styles of their costumes. The costumes of Koguryo were greatly differentiated by geographical regions ; One direct example is cheak of Pyoungyang and Anak regiona was named as official hats of rulling parties of Kokuryo. However, in this study, the cheak was viewed as a product of influences of Chinese costume. Further-more, the laguan was named as mooguan. Costumes of ceremonial occasions were heavily decorated to symbolize dignity and auth-ority. Metal ornament of headgear and belt, metal shoes were con-sidered as ceremonial costumes. the tight hunting costumes of Koguryo shown in mural pain-ting costumes of Koguryo shown in mural pain-tings were presumed to be spring and autumn clothing. Excavated from Neungasnlee, the hunting costumes inscribed in the gold incense burnner were confirmed as hunting costumes of Bakjae. The individuality of the costumes of the Three Kingdoms could also be supported by the fact that they had different climates. The temperature difference between Gipan region and Kyoungjoo(慶州) region was emphasized. Especially winter clothing would have had a big difference in style than the summer clothing. Through the research summarized above, this study was able to confirm that each of the Three Kingdoms had developed individualized costumes based on their geographical, cultural and environmental factors. Furthermore, through this study, it was possible to find out the difference as well as the similarities of their costumes according to each of their people's sociopolitical status, awareness of indepen-dence, andunique historical and traditional charactoristics.

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