• Title/Summary/Keyword: early life history

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Seasonal Variation of Infection by Three Species of Symbiotic Copepods in Clam, Tresus keenae (왕우럭에 공생하는 요각류 3종에 대한 감염률의 계절 변동)

  • Moon, Seong-Yong;Rha, Sung-Ju;Yoon, Ho-Seop;Choi, Sang-Duk
    • Journal of Aquaculture
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    • v.19 no.4
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    • pp.236-241
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    • 2006
  • Seasonal variation of the infection by three species of symbiotic copepods in clam, Tresus keenae was investigated in south coast of Korea. The prevalence and abundance of three symbiotic copepods showed seasonal variation with a peak in winter. Reproduction of the copepods occurs from early autumn to spring as indicated by higher ratio of gravid copepods. The frequency distribution of Lichomolgus inflatus, Pseudomyicola spinosus and Anthessius progectus in their host population could be fitted with negative binominal distribution. Results from the present study suggest that seasonal fluctuation in prevalence, relative density and mean intensity is related to temperature and life history of the symbiotic copepods.

Spontaneous ovarian hyperstimulation syndrome following a thawed embryo transfer cycle

  • Kim, Mi Kyoung;Won, Hyung Jae;Shim, Sung Han;Cha, Dong Hyun;Yoon, Tae Ki
    • Clinical and Experimental Reproductive Medicine
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    • v.41 no.3
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    • pp.140-145
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    • 2014
  • This article reports a case of spontaneous ovarian hyperstimulation syndrome (OHSS) following a thawed embryo transfer cycle. OHSS, a potentially life-threatening condition, is an iatrogenic complication of controlled ovarian stimulation; therefore, it is very important to prevent and treat OHSS during treatment with ovulation-inducing agents. Despite our efforts to prevent OHSS, in this case, severe spontaneous OHSS occurred, which resulted in uncontrolled preterm labor and a preterm delivery and also persisted for 6 weeks after delivery. Freezing all embryos cannot entirely prevent the development of OHSS because OHSS can occur spontaneously. Although spontaneous OHSS remains a rare event, females with a history of OHSS may have an elevated risk for spontaneous OHSS. We suggest closely monitoring cases of pregnancy following thawed embryo transfer for early diagnosis of spontaneous OHSS and the use of conservative management.

A Case of Melkersson-Rosenthal Syndrome (Melkersson-Rosenthal 증후군 1례)

  • Pee, Dae Hun;Na, Yo Won;Chang, Ki Young;Seo, Woo Keun;Lee, Kee Hyoung;Eun, Baik-Lin
    • Clinical and Experimental Pediatrics
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    • v.45 no.10
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    • pp.1292-1298
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    • 2002
  • Melkersson-Rosenthal syndrome(MRS) is a rare disorder, having a symptom triad of recurrent facial palsy, orofacial swelling and fissured tongue(lingua plicata). This disorder is usually recurrent or progressive, and monosymptomatic or oligosymptomatic forms have been reported to be more common than classic forms. Generally, MRS occurs in young adults at the end of the second decade of life and incidence of the disease in childhood is known to be very low. Although the clinical manifestation of MRS in children is similar to that in adults, early diagnosis and management is essential to avoid long-lasting functional disorders and psychological problems. We experienced MRS in a 13 year old boy with a history of recurrent facial palsy. We report this case with review of related literature.

A Qualitative Study on the Problem of Educating Children in Multicultural Families (다문화가족의 자녀교육 문제에 관한 질적 연구)

  • Kim, Seung-Hee
    • Journal of Families and Better Life
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    • v.29 no.4
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    • pp.17-33
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    • 2011
  • The purpose of this study was to investigate diversity in the situations of multicultural families regarding the education of their children and to suggest rational ways of educating children in multicultural families. The participants in this study were 16 mothers from multicultural families typically characterized by an international marriage in which a Korean male had married a non-Korean female. The data were collected using intensive interviews over a course of three months and were analyzed by grounded theory. The results of this study showed that the participants had difficulty in adapting to the styles of educating children in Korean families and that they could not help their children do homework by themselves due to the limited personal relationships, the shortage of information about educating children, and an lack of organized education programs on Korean culture and history. Thus, they solved these problems by depending on different extracurricular activities and thus incurred a financial burden to support these activities. This led to excessive amounts of time and energy to earn the money to support the activities, which gave them few opportunities to acquire information on educating children by, for example, meeting with others. This explained their dependency on different extracurricular activities so as to solve the problem of their educating children. In an effort to seek ways to break this vicious circle, this study emphasized that policies related to educating children in multicultural families should focus on helping multicultural families strengthen their abilities to educate their children fundamentally.

Skeletal and Morphological Development of Larvae and Juveniles in Cultured Threeline Grunt Parapristipoma trilineatum (Perciformes: Haemulidae) from Korea (양식산 벤자리(Parapristipoma trilineatum) (농어목, 하스돔과) 자치어의 형태 및 골격발달)

  • Si-Yeong Jeong;Jeong-Hyeon Cho;Jin Woo Park;Jin-Koo Kim
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.57 no.2
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    • pp.153-168
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    • 2024
  • Morphological and skeletal development in the cultured threeline grunt Parapristipoma trilineatum was studied from 1.96 to 61.39 mm notochord length (NL) or standard length (SL) specimens (n=360). After two days post-hatching (dph, 2.13 mm NL), the mouth opened, and melanophores formed in the eyes and egg yolk were absorbed. Oli globules were absorbed at 3 dph (2.71 mm NL). The total number of fin rays reached that of adults at 28 dph (10.58 mm SL). During skeletal development, the premaxillaray, dentary, opercle, preopercle, and cleithrum first began to ossify at 6 dph (3.51 mm NL). Ossification of all skeletal elements was completed at 28 dph (14.57 mm SL). The vertebrae began to ossify at 17 dph (5.63 mm SL) and were completed at 28 dph (8.48 mm SL), progressing from cranium to caudal bone. The centrum ossified from the dorsal to ventral direction. Vertebral fusion and separation were found to be common skeletal abnormalities.

Are colony developmental stages of bumblebee, Bombus terrestris (hymenoptera: apidae) affected by different concentrations of sugar and honey solutions?

  • Imran, Muhammad;Ahmad, Munir;Naeem, Muhammad;Mahmood, Khalid;Nasir, Muhammad;Aslam Sheikh, Umer Ayyaz
    • International Journal of Industrial Entomology and Biomaterials
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    • v.34 no.2
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    • pp.23-31
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    • 2017
  • Bumblebees, more efficient than honeybees, provide important services for pollination especially in tomato, pepper, cucumber, strawberries and other crops grown under tunnel farming or glasshouse conditions to yield maximization. These bees require pollen and nectar to meet their dietary needs and maintain their colony structure, development and reproduction. Keeping in view their economic importance, the effect of five concentrations of sugar and honey solutions (1:1, 1:1.5, 1:2, 2:1,1.5:1) each as alternative to nectar were used to observe their effect on life history parameters of Bombus terrestris. The 1:1 ratio of sugar solution was found most effective followed by 1.5:1, 1:1.5, 1:2 and 2:1 and also more effective of all five concentrations of honey solutions on all three stages of colony development i.e., at colony initiation, colony development and colony maturation stages. At colony initiation stage, early pre-oviposition period ($6.40{\pm}0.97$ days), early emergence of first worker in the first batch ($25.40{\pm}1.21$ days) and maximum numbers of workers ($6.20{\pm}0.24$) emergence in the first batch were observed at 1:1 ratio of sugar solution. Colonies reared on 1:1 ratio of sugar solution reached earlier ($52.13{\pm}1.28$ days) at colony foundation stage with minimum mortality ($3.27{\pm}0.54$ workers). At colony maturation stage, maximum numbers of workers, sexual (males, queens) and maximum mother queen longevity was observed at the same 1:1 ratio of sugar solution. It can be suggested from present study that sugar solution as alternative of nectar at 1:1 ratio was better than other sugar concentration levels and also from those of honey solution.

The Early Life History of the Rockfish, Sebastiscus marmoratus 1. Egg Development and Morphology of Larvae by Artificial Treatment in Aquarium (쏨뱅이 Sebastiscus marmoratus 초기생활사에 관한 연구 1. 인위적인 방법에 의한 수조 내에서의 난발생과정과 자어기의 형태)

  • Kim, Yong-Uk;Han, Kyeong-Ho;Kang, Chung-Bae;Kim, Jin-Koo;Byun, Sun-Kyu
    • Korean Journal of Ichthyology
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    • v.9 no.2
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    • pp.178-185
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    • 1997
  • From November 1996 to April 1997, the rockfish, Sebastiscus marmoratus (Cuvier et Valenciennes) was reared in laboratory, and observed eggs development and morphology of larvae. The eggs of this species are demersal and adhesive, and their diameter were varied within 0.76 to 0.82 mm. The color of yolk is light yellow in early developmental stage, and then turned to orange before hatching out. The yolk contained numerous tiny oil globules. Hatching began about 33 hours and 30 minutes after insemination at $10.0{\sim}14.5^{\circ}C$ of waters. The newly hatched larvae were elongated in shape and 1.62~1.68 mm in total length (TL) with 7~8+16=23~24 myomeres. The larvae absorbed yolk material and oil globule completely in 14 days after hatching and became postlarvae. The spawning season of adult rockfish may be supposed to be from February to March in the southern sea of Korea.

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Study on Chromatology of the Five Cardinal Colors in Oriental Medicine (한의학(韓醫學) 오색(五色)의 색채론적(色彩論的) 연구)

  • Kim, Kyoung-Shin;Kim, Byoung-Soo
    • Journal of Haehwa Medicine
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    • v.20 no.1
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    • pp.25-37
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    • 2011
  • It fuses into culture of the East and the West in use of color ; colors of five direction, which had been from the Five Phase Theory in East Asia. Formative ability of color fields in a formative early Oriental Medicine history as well. Color is a very important factor and a necessary step of visible diagnosis. As a human's body is maintained and alive under the control of spirit and spirit is stored by five viscera, so spirit expresses the change of five viscera and is reflected by color. Visible diagnosis consists of spirit, appearance, Qi and color and movement. The purpose of each visible diagnosis is that we would know states of essence, Qi and spirit in patient's body. To ancient Asia people 'to see' was a kind of insight to the object as a whole. Similarily the activity of seeing the human body was the integral part of making diagnosis of a patient. This was the cause that there was suggested the discussion of the Five color theory in Oriental Medicine as a counterpart to that of the 'Goethe for Zur Farbenlehrer'. The inspection of Oriental Medicine was not a simple gazing of the eye as a sense organ, but the total insight to the internal state of the patient. For that reason, the eye-perception in early Chinese medicine was the reading the signs of the internal body which had have not the visual form but the flux of the internal life.

Necrotizing Fasciitis in a Patient with Systemic Lupus Erythematosus (전신성 홍반성 루푸스 환자에서 발생한 괴사성 근막염의 치험례)

  • Cho, Hye-In;Chang, Hak
    • Archives of Plastic Surgery
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    • v.38 no.3
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    • pp.309-314
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    • 2011
  • Purpose: Necrotizing fasciitis is a life-threatening, destructive soft tissue infection with a very high rate of mortality that needs early diagnosis and aggressive treatment. Systemic Lupus Erythematosus (SLE) is a systemic, autoimmune disease and it's major cause of mortality is an infection. But necrotizing fasciitis in SLE is very rare and there have been only 22 cases reported in the literatures. We reported a patient of necrotizing fasciitis with SLE and reviewed 22 others from literature research. Methods: A 40-year-old female patient with a history of SLE for 6 years came to the emergency room. The patient complained of severe pain and swelling on her right leg. She was diagnosed as necrotizing fasciitis and underwent emergency fasciotomy. As wound cultures showed variable organisms, she was treated with broad-spectrum antibiotics and underwent several surgical debridements. Then, the wound was treated with the V.A.C (Vacuum Assisted Closure) device and split thickness skin grafting was performed two times. Results: Skin graft was well taken within 2 weeks after operations and the patient was discharged to outpatient follow up. There was no complication related with surgery and she could walk without cane after 3 months. Conclusion: We treated a necrotizing fasciitis in a patient with SLE and reviewed 22 others from literature research. The case presented here suggests that necrotizing fasciitis is a rare disease in SLE patients, but should be considered in the differential diagnosis of soft tissue infection in SLE patients. A high index of suspicion is needed for early diagnosis and proper management in these patients.

Endoscopic Spine Surgery

  • Choi, Gun;Pophale, Chetan S;Patel, Bhupesh;Uniyal, Priyank
    • Journal of Korean Neurosurgical Society
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    • v.60 no.5
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    • pp.485-497
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    • 2017
  • Surgical treatment of the degenerative disc disease has evolved from traditional open spine surgery to minimally invasive spine surgery including endoscopic spine surgery. Constant improvement in the imaging modality especially with introduction of the magnetic resonance imaging, it is possible to identify culprit degenerated disc segment and again with the discography it is possible to diagnose the pain generator and pathological degenerated disc very precisely and its treatment with minimally invasive approach. With improvements in the optics, high resolution camera, light source, high speed burr, irrigation pump etc, minimally invasive spine surgeries can be performed with various endoscopic techniques for lumbar, cervical and thoracic regions. Advantages of endoscopic spine surgeries are less tissue dissection and muscle trauma, reduced blood loss, less damage to the epidural blood supply and consequent epidural fibrosis and scarring, reduced hospital stay, early functional recovery and improvement in the quality of life & better cosmesis. With precise indication, proper diagnosis and good training, the endoscopic spine surgery can give equally good result as open spine surgery. Initially, endoscopic technique was restricted to the lumbar region but now it also can be used for cervical and thoracic disc herniations. Previously endoscopy was used for disc herniations which were contained without migration but now days it is used for highly up and down migrated disc herniations as well. Use of endoscopic technique in lumbar region was restricted to disc herniations but gradually it is also used for spinal canal stenosis and endoscopic assisted fusion surgeries. Endoscopic spine surgery can play important role in the treatment of adolescent disc herniations especially for the persons who engage in the competitive sports and the athletes where less tissue trauma, cosmesis and early functional recovery is desirable. From simple chemonucleolysis to current day endoscopic procedures the history of minimally invasive spine surgery is interesting. Appropriate indications, clear imaging prior to surgery and preplanning are keys to successful outcome. In this article basic procedures of percutaneous endoscopic lumbar discectomy through transforaminal and interlaminar routes, percutaneous endoscopic cervical discectomy, percutaneous endoscopic posterior cervical foraminotomy and percutaneous endoscopic thoracic discectomy are discussed.