• Title/Summary/Keyword: early life history

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Life Cycle of Gampsocleis sedakovi abscura Walker (Orthoptera:Tettigoniidae) in Jinju, Gyeongnam (경남 진주에서 여치 Gampsocleis sedakovi abscura Walker의 생활사에 관한 연구)

  • Yoon, Chul-Ho;Park, Chung Gyoo
    • Journal of agriculture & life science
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    • v.44 no.1
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    • pp.43-49
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    • 2010
  • Life history of Gampsocleis sedakovi abscura Walker, an amenity sound producing insect, was investigated in Jinju, Korea from 2005 to 2007. G. sedakovi abscura had a generation per year and could be seen in the field from early March to late September. The peak emergence period of adults was early July. Developmental period from egg to adult was 357 days in average of three years in the field. Egg and nymphal periods, and adult longevity were 269, 88, and 357 days in average, respectively. The average ovipositional period was 63 days, and an adult laid 94 eggs in average throughout her life. The average longevity of adult was 90 days for female and 82 days for male. The sex ratio was 52%. G. sedakovi abscura over-wintered as egg stage in the soil. Circadian rhythm of the adult emergence showed that more than 70% of the adults emerged in the morning.

A Comprehension of Life in Korean Medicine (한의학에서의 생명에 대한 이해)

  • Sohn, In Chul;Kim, Jaehyo
    • Korean Journal of Acupuncture
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    • v.30 no.1
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    • pp.9-15
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    • 2013
  • Objectives : Definition of Life has led an identity and advancement in the knowledge system of science including biomedicine. The world welcomes the new paradigm about the integrative medicine throughout Western Medicine and Traditional Medicine co-exists so far. Methods : Thus this study has comprised how Life was interpreted in Korean Medical history. To reach the purpose, various data and documents about Life subjected to the medical field was collected from medical textbooks and chapters presented in ancient Korean Medicine. Results : Most of important issue is Life as the key even though there are many opinions and conflicts in the view of Life between Western and Korean medical culture. As a result it is not different in the concept of Life each other except for speaking differently same as using the different languages. Integrative Medicine has accepted that it emphasizes the therapeutic relationship between practitioner and patient, is informed by evidence, and makes use of all appropriate therapies. Integrative Medicine declares to be a kind of medicine if vary medical system can focus on human being. Conclusions : Since Korean Medicine was early therapeutic medical categories developed based on Dao, Korean Medicine have to focus on mind and body interactive relationship and attribute to the public health care system in the future.

A Research on Architect Yi Hunwoo (건축가 이훈우에 대한 연구)

  • Kim, Hyunkyung;Yu, Dylan;Hwang, Dooj
    • Journal of architectural history
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    • v.29 no.3
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    • pp.37-50
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    • 2020
  • This research focuses on the life and works of architect Yi Hunwoo, who was active in early 20th century. Yi has been previously mentioned in a few research documents, but not as a main subject of interest. Thanks to digitalized historic databases, the authors of this research were able to access more information about Yi. It was discovered that he was born in Korea in the late 19th century and then attended the Nagoya Higher Technical School in Japan. After repatriation, he participated in a few public projects in Korea as an in-house architect at the Governor-General's office, then started his own practice and produced his individual projects. He also contributed articles on innovations in residential design to newspapers. Chronologically, his activities as an architect preceeded those of Park Gilyong, who has been conventionally regarded as the first Korean modern architect so far. This research would like to establish Yi Hunwoo as a historic figure whose professional career spanned the earlier stage of the Korean modern architecture, based on the records of his life and professional activities. The authors do not wish to present the architectural analysis nor evaluation of his works, which will be subject to future researches.

Phenological Studies of Deciduous Trees in the Cool Temperate Region of Japan

  • Jun, Kala;Hayashi, Ichiroku
    • Journal of Ecology and Environment
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    • v.31 no.3
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    • pp.193-200
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    • 2008
  • We obtained quantitative information on leaf unfolding and leaf shedding by observing 45 species of cool temperate deciduous trees in an arboretum over 5 growing seasons. These trees were in leaf (the foliage period) for 207 days on average after 1 April; 50% of leaves had been shed by 192 days after 1 April. Duration from the start of leaf unfolding to 50% leaf shedding was 157 days on average. Leaf unfolding began 35 days on average after 1 April. For leaf unfolding to begin, a$ 51^{\circ}C{\cdot}day$ of cumulated daily mean air temperature above $5^{\circ}C$ from 1 January (modified Kira's warmth index) was needed. Fifty-nine days elapsed between initiation and the final stage of leaf unfolding. The period of net photosynthetic assimilation was 157 days. The species with succeeding- type leaf unfolding associated with the anemochore seed type dominated the early stage of succession, while the species with flush-type leaf unfolding tended to dominate the late stage of succession. Few species were found in regions where late frosts occur after the day when the cumulative temperature for leaf unfolding is achieved. Biological characteristics include time of leaf unfolding, which affects the life history of each species, so that each species occupies its own niche in the stand. We conclude that that leaf phenology, such as timing of leaf unfolding and leaf shedding, is one of the components of each species' ecological characteristics.

Differential Diagnosis of Hirschsprung's Disease (Hirschsprung's Disease의 감별 진단)

  • Yoo, Soo-Young
    • Advances in pediatric surgery
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    • v.8 no.1
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    • pp.54-61
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    • 2002
  • Hirschsprung's disease (HD) is usually diagnosed in the newborn period and early infancy. The common presentation of HD in newborns consists of a history of delayed passage of meconium within the first 48 hours of life. The differential diagnosis in newborns is one of the clinical challenges of this disorder. A number of medical conditions which cause functional obstruction of the intestines are easily excluded. Neonates with meconium ileus, meconium plug syndrome, distal ileal atresia and low imperforate anus often present in a manner similar to those with HD in the first few days of life. Abdominal radiographs may help to diagnose complete obstruction such as intestinal atresia. Microcolon on contrast enema can be shown in cases with total colonic aganglionosis, ileal atresia or meconium ileus. Suction rectal biopsy or frozen section biopsy at operation is essential for differential diagnosis in such cases. HD is also considered in any child who has a history of constipation regardless of age. Older children with functional constipation may have symptoms that resemble those of HD and contrast enema is usually diagnostic. However, children with other motility disorders generally referred to as chronic idiopathic intestinal pseudoobstruction present with very similar symptoms and radiographic findings. These disorders are classified according to their histologic characteristics.; visceral myopathy, visceral neuropathy, intestinal neuronal dysplasia (IND), hypoganglionosis, immature ganglia, internal sphincter achalasia. Therefore, the workup for motility disorders should include rectal biopsy not only to confirm the presence of ganglion cells but also evaluate the other pathologic conditions.

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A Bibliographical Study on Jehotang (제호탕의 문헌 고찰)

  • Ji, Myoung-Soon;Ko, Byoung-Seob;Anh, Sang-Woo;Kim, Jong-Goon
    • Journal of the East Asian Society of Dietary Life
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    • v.18 no.1
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    • pp.158-164
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    • 2008
  • This study was performed to present new insights into the distinct aspects of Jehotang. Its history, significance, and effects were examined by evaluating the pertinent literature. In which the idea that Korean foods were original sources of medicine was well expressed. This study was also conducted with the anticipation that it may be useful in developing new foods and beverages based on modern science. References to the Jehotang were found in nine Korean medicine books, seven general books, and in dynastic records such as Bibyeonsa deungnok, Joseonwangjosilrok, Seungjeongwon Ilgi, etc; thus, it was likely a food since the early Korean age. Furthermore, it was discovered that in the Chosun era. Jehotang was not only drunk as a soft drink at the Royal Court in the summer, but was also used as a royal gifts to Cabinet members at the Tano festival on the fifth day of the fifth month of the lunar calendar.

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Growth Rate, Sex Ratio, Age Structure and Mating Period of Korean Crayfish Cambaroides similis Natural population (한국산 가재 Cambaroides similis 자연 개체군의 성장률, 암수비율, 연령구조 및 교미시기)

  • Jung, Jae-Ho;Kim, Min-Seop;Ahn, Dong-Ha;Min, Gi-Sik
    • Journal of Aquaculture
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    • v.22 no.1
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    • pp.16-22
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    • 2009
  • Life history of Korean crayfishes Cambaroides similis (Koelbel) was studied 8 month from March to October, 2006 from the Gwanak mountain, Seoul, South Korea. By capture and recapture method, 551 crayfishes were collected analyzed during the experimental period. Based on the distribution pattern of body lengths, the local population putatively divided into four age groups. The sex ratio of male and female was almost equal. However, their growth rates varied by water temperature. Early juveniles seen during June became adult during August. The study findings suggest that late autumn is mating season.

A Study on the Architectural Characteristics of HaeNam Yoon clan's Residential Buildings (해남윤씨(海南尹氏) 주거건축의 건축적 특성에 관한 연구)

  • Choi, Jung-Mee;Cheon, Deuk-Youm
    • Journal of architectural history
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    • v.27 no.3
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    • pp.73-82
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    • 2018
  • Gosan(孤山) Yun Seon-do is a literary artist and poet, Nogudang House(綠雨堂) is an invisible space composition a ${\Box}$-type of arrangement in Jeollanam-do. The study of related architecture together with Gosan Yun Seon-do has been studied variously early, Mostly, the study of the life of Haenam Yun clan(海南尹氏) and the life of Gosan Yun Seon-do. In this study, HaeNam Yun compares the houses under the roof of the public house centered on buildings. In this study, we compare and analyze Nogudang House and Gongjae Historic House(恭齋古宅), Yun Cheol-ha's Historic House(尹哲夏古宅) in the Haenam Yun clan's house building. Analyze the characteristics of architecture and analyze changes in space usage and components and settlement process. The purpose of this study is to clarify differences in structural features and to analyze what structural characteristics maintain structural characteristics. In the comparative analysis process, architectural characteristics are used as variables and each correlation is investigated, and shape difference is analyzed by difference analysis. In addition, the architectural characteristics are analyzed by analyzing the relational factors influencing the morphological change, focusing on the results of the analysis of differences between the comparative analysis objects.

Direct release of embryonic sporophytes from adult Nereocystis luetkeana (Laminariales, Ochrophyta) in a high latitude estuary

  • Ulaski, Brian P.;Konar, Brenda
    • ALGAE
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    • v.36 no.2
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    • pp.147-154
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    • 2021
  • Kelp life history pathways alternate between macroscopic sporophytes that produce spores and microscopic gametophytes that produce gametes. Occasionally, an alternative pathway is seen. This study examined the circumstances by which the high latitude estuarine bull kelp, Nereocystis luetkeana, foregoes the "free-living microscopic stages by releasing embryonic sporophytes directly from sori. Sori were collected from adult N. luetkeana sporophytes from eight locations within Kachemak Bay, Alaska in 2018 and 2020 to examine spatial and temporal development of embryonic sporophytes on sori. Distinctions were made between sori collected from first-generation and overwintered adults to assess the influence of parental age on embryonic sporophyte release. Further distinctions were made between sori collected from attached and drifting individuals to assess the influence of the status of parental attachment to substrate on embryonic sporophyte release. Inspection of propagules released from sori after 48-h incubations indicated that embryonic sporophytes were occasionally released alongside viable spores. Though embryonic sporophytes were released from sori as early as spring, it was not evident that they were bound by seasonal or spatial limits. The percent of propagules that were embryonic sporophytes ranged from 0% to 100% but were not significantly different between first-generation and overwintered adults, nor were they different between attached and drifting individuals. Nevertheless, the characteristic of directly releasing embryonic sporophytes from adult sporophytes might have ecological advantages for N. luetkeana.

Change in the treatment strategy for pediatric Crohn's disease

  • Kim, Mi-Jin;Choe, Yon-Ho
    • Clinical and Experimental Pediatrics
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    • v.53 no.9
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    • pp.830-833
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    • 2010
  • Crohn's disease is characterized by chronic inflammation involving any portion of the gastrointestinal tract. Treating Crohn's disease is a major challenge for clinicians, as no curative therapy currently exists. Pediatric Crohn's disease is characterized by frequent relapses, a wide extent of disease, a high prevalence of extraintestinal manifestations, and a severe clinical course. The classic therapeutic approach is known as the 'step-up' strategy, and follows a progressive course of treatment intensification as disease severity increases. Although this approach is usually effective for symptom control, many patients become either resistant to or dependent on corticosteroids. The efficacy of infliximab suggests that, rather than a progressive course of treatment, early intense induction may reduce complications associated with conventional treatment and improve quality of life. Intensive early therapy with infliximab is known as the 'top-down' strategy. Such therapy offers the potential for altering the natural history of Crohn's disease, and is changing treatment paradigms. However, the relatively new concept of an early aggressive or 'top-down' treatment approach is not yet widely accepted, especially in pediatric patients. The results of our current study demonstrate that early and intensive treatment of pediatric Crohn's disease patients with infliximab, at initial diagnosis, was more effective for maintaining remission and reducing flares.