• Korean Journal of Veterinary Research
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• v.1 no.1
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• pp.72.2-72.2
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• 1961

Since April, 1957, 200 White Leghorn and 100 Newhampshire had been brought to the poultry farm of our college from Songwhan National Breeding Station. The looses due to avian tuberculosis were 67 chickens by June, 1959. Thirteen of them were examined histopathologically. Grayish white tuberculous nodules varying in size were recognized in the liver, spleen, bone marrow, and intestine of all affected birds. The heart rind testis were involved in each case, and pulmonary tuberculosis which, unlike in mammals, was kown to be rarely encountered in birds was observed in two cases. One case showed amyloid like degeneration in hepatic cell cords of the liver, glomerular tufts and collecting ducts of the kidney. Lesions in the spleen presented typical Sago spleen. Sections from the liver, spleen, intestine, and lungs were stained by Ziel-Neelsen stain. Acid Fast stained bacilli were found embeded in the cytoplasm of epithlioid cells and foreign-body giant cells.

• Journal of Wetlands Research
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• v.5 no.1
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• pp.1-13
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• 2003

Conservation of wetlands are important because wetlands are hatcheries for fishes and habitat for migratory birds and mammals. Wetlands also function as a filter for polluted water and material and transition zone for harboring numerous species of plants and animals. This paper reviewed the importance of wetland conservation and policy on management of wetlands in Korea. Wetland Conservation Act(1999) and Maritime Management Act(1999) are two legislation for conservation of wetlands. Wetland Conservation Act is issued by both Ministry of Environment and Ministry of Maritime Affairs and Fisheries. The definition of wetlands are so diverse, but this paper categorized wetlands as both natural and man-made lakes, mud flat areas and inland wetlands. Management application was considered for each wetland categories.

• Ocean and Polar Research
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• v.29 no.4
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• pp.311-316
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• 2007

Ocean noise may be used for monitoring wind speed and rainfall rate on the sea surface, as well as for tracking whales' migration routes. In particular, low-frequency ocean noise has recently been of concern with relation to the behavior of marine mammals. Low-frequency ocean noise has been increasing over the past few decades due to increase of ship traffic and offshore oil industry activities. Mechanical noise such as flow noise and cable strumming noise may be induced if low-frequency ocean noise is measured by cabled traditional hydrophone in high current areas. To successfully measure low-frequency ocean noise in a shallow water environment with strong current, we developed a self-recording hydrophone. This paper describes the main configurations of the self-recording hydrophone and presents some results on measured data.

• Journal of the Korean Society of Food Science and Nutrition
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• v.13 no.2
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• pp.222-228
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• 1984

Since organisms have their rhythms by synchronizing the changes of periodic external circumstances and maintaining the integration of internal ones, circadian rhythm which affects to ingestion, digestion and metabolism of nutrients in the body, is important and interesting to discuss in the field of nutritional science. Also it is a serious public health problem tat various night-shift jobs are increasing now a days. Therefore authors wish to understand the properties of circadian rhythm and the rhythms of metabolic activities.

• Journal of Integrative Natural Science
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• v.5 no.2
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• pp.65-71
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• 2012

Neuropeptide Y (NPY), a 36-amino acid polypeptide, is a member of the pancreatic polypeptide family, which consists of NPY, peptide YY (PYY) and pancreatic polypeptide (PP). The neuropeptide Y (NPY) receptors called Y receptors belongs to G-protein coupled that are involved in a variety of physiological functions such as appetite regulation, circadian rhythm and anxiety. Five receptor subtypes have been cloned in mammals (Y1, Y2, Y4, Y5, and Y6) of which four are functional. In this short review, information about the functional NYP receptors was analyzed. Sequence analyses were done between these receptors to identify the relationships between them. Phylogram was generated between these receptors to identify the close homologue between these receptors. Our sequence analyses found that Y1 and Y4 receptors are close than the other receptors. Further structure based analysis could be useful to identify subtype selective antagonists and dual antagonists targeting Y1 and Y4 receptors.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.18 no.5
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• pp.521-528
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• 2009

In these days, biomimetic apprioach in the design and control of robotic system has drawn much attention. The human-being and mammals possess their own feet. Using the mobility of their feet, they are able to walk in various environments such as plain land, desert, swamp, and so on. Previously developed biped robots and four-legged robots did not employ such adaptable foot. In this work, a biomimetic foot mechanism is investigated through analysis of the foot structure of the human-being. This foot mechanism consists of a toe, an ankle, a heel, and some springs replacing the foot muscles and tendons. Using five toes and springs, this foot can adapt to various environments. A mathematical modeling for this foot mechanism was performed and its characteristics were observed through numerical simulation.

• IMMUNE NETWORK
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• v.14 no.3
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• pp.123-127
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• 2014

Interleukin-32 (IL-32) is a cytokine inducing crucial inflammatory cytokines such as tumor necrosis factor-${\alpha}(TNF{\alpha})$ and IL-6 and its expression is elevated in various inflammatory autoimmune diseases, certain cancers, as well as viral infections. IL-32 gene was first cloned from activated T cells, however IL-32 expression was also found in other immune cells and non-immune cells. IL-32 gene was identified in most mammals except rodents. It is transcribed as multiple-spliced variants in the absence of a specific activity of each isoform. IL-32 has been studied mostly in clinical fields such as infection, autoimmune, cancer, vascular disease, and pulmonary diseases. It is difficult to investigate the precise role of IL-32 in vivo due to the absence of IL-32 gene in mouse. The lack of mouse IL-32 gene restricts in vivo studies and restrains further development of IL-32 research in clinical applications although IL-32 new cytokine getting a spotlight as an immune regulatory molecule processing important roles in autoimmune, infection, and cancer. In this review, we discuss the regulation and function of IL-32 in inflammatory bowel diseases and rheumatoid arthritis.

• Proceedings of the Korean Biophysical Society Conference
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• 1999.06a
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• pp.36-36
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• 1999

Bacterial Δ-3-ketosteroid isomerase (KSI) catalyzes the conversion of Δ-to Δ-3-ketosteroids via enolate formation, which is also found in the synthesis of all steroid hormones in mammals. In Pseudomonas testosteroni, KSI Asp38 (pKa ~ 4.7) was identified as the general base which abstracts the steroid C4b-H (pKa ~ 12.7) to form the dienolate intermediate.(omitted)

• The Korean Journal of Ecology
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• v.20 no.2
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• pp.111-123
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• 1997

Although the number of active workers in Australia is small the range of species associated with allelopathic activity is at least as large as that reported elsewhere in the world. In this paper, work on native and infroduced plants is discussed under the general heading of "conventional allelopathy", thiat is, interactions between plants which are chemically mediated. Work in which compounds associated with allelopathy, in the conventional sense, are biologically active in different contexts is included under "unconventional allelopathy", Examples which involve microorganisms, corals and other marie species, and mammals are discussed.mmals are discussed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.2 no.1
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• pp.165-168
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• 1998

United nations convention on the law of the sea was actopted by third united nations conference on the law of the sea in 1982. and it came in to force on Novemver 1966. It involves exclusive economic zone, highly migrated species, marine mammals, anadromous stocks and high seas. in this paper, I analyze these issues, especially EEZ and high seas.