• Korean Journal of Veterinary Service
• /
• v.24 no.3
• /
• pp.255-262
• /
• 2001

Five pigs industry with outbreaks of transmissible gastroenteritis(TGE) in Gyeongbuk province were investigated during the period from January to December 2000. The typical signs of TGE in piglets had transient vomiting and a watery yellowish diarrhea, rapid loss of weight, dehydration and high mortality in pigs under 2 weeks of age. Clinical signs of TGE in growing and finishing pigs and sows were usually limited to inappetence and diarrhea for one or a few days, with vomiting observed in an occasional animal. The detection of TGE viral antigen in epithelial cells of the small intestine had been used in indirect fluorescent antibody test (IFA) for diagnosing TGE in young pigs. WかR had been successfully used to detect the DNA derived from TGEV in specimen of intestinal swabs. Among 5 pigs industry, four showed typical signs of epizootic TGE and one progressing enzootic TGE. It was 22～53 days that the duration of initial clinical disease in TGE outbreaks of pigs investigated in Gyeongbuk province in 2000. However the duration related directly to herd size. Mortality of piglets under 2 weeks of age for duration was 53.2～88.2%, but that of piglets 2～5 weeks of age was 2.5～6.5%. The piglets of 1 weeks of age died mostly during duration of TGE, but varied considerably with husbandry and other environmental factors.

• Korean Journal of Veterinary Service
• /
• v.39 no.1
• /
• pp.65-68
• /
• 2016

Multiple enlarged submandibular nodules were discovered during a routine antimortem examination at slaughter in 3 dairy cows of 20-month-old. Grossly, submandibular nodules were firm, reddish, and oval in shape. On cut surface, multiple yellowish abscesses in the parenchyma were observed. Histopathologically, the nodules were characterized by severe diffuse pyogranulomatous inflammation and chronic fibrosis with multiple eosinophilic clubs of Splendore-Hoeppli material containing central bacterial colonies. Trueperella pyogenes was isolated from the lesions. This case was diagnosed as submandibular pyogranuloma caused by Trueperella pyogenes in slaughtered dairy cows in Korea.

• Korean Journal of Veterinary Research
• /
• v.48 no.3
• /
• pp.317-321
• /
• 2008

Four 5 month old calves were died after showing respiratory distress after long-distance transportation at winter season. They were diagnosed as fibrinous lobar pneumonia caused by Mannheimia (M.) haemolytica. Grossly, lungs were attached onto the pleura by fibrin, with a rich yellowish fluid in thorax. The cut surface of the lung was showed marbled pattern of the reddish or greyish consolidation and widened interlobular septa by fibrin deposition. Histopathologically, parenchymal necrosis was delineated by a band of the degenerated inflammatory cells, and distended interlobular septa with serofibrinous exudates and vascular thrombosis with alveolar capillaries degeneration and abundant serofibrinous exudates in alveoli. M. hemolytica were isolated from all calves, and bovine viral diarrhea virus and parainfluenza type 3 virus in one calf were detected by RT-PCR. Thus, it was concluded that this case was diagnosed as pneumonic mannheimiosis suggested by complex infection with viruses after long-distance transportation and coldness.

• Journal of Korea Technical Association of The Pulp and Paper Industry
• /
• v.43 no.4
• /
• pp.76-81
• /
• 2011

This study was carried out in order to develop a speciality functional coated paper, which can be recognized under a ultraviolet lamp. The special fluorescent whitening agent (FWA) which absorbs ultraviolet light (397~410 nm) and emits it as yellowish light (570~500nm) was used. The special FWA was applied in a coating color in two ways: (1) direct application to a coating color as a FWA; (2) application on pigment surface, drying it and application it as a fluorescence whitening pigments (colored pigments). The effects of the special FWA on coating color properties were tested and the distribution of colored pigments in coated paper was evaluated under a ultraviolet lamp. The results showed that the colored pigments didn't affect on coating color properties. Experimental results showed the possibility of producing a security coated paper using the special FWA. To produce a speciality functional paper, it was found to be proper to apply the special FWA in the form of colored pigment.

• Animal Systematics, Evolution and Diversity
• /
• v.26 no.3
• /
• pp.307-316
• /
• 2010

To investigate the Korean ciliate fauna, two oxytrichid ciliates, Laurentiella strenua (Dingfelder, 1962) and Notohymena australis (Foissner and O'Donoghue, 1990) were collected from the Taehwa River in Ulsan, South Korea. These two ciliates are reported for the first time in Korea. Descriptions were based on the observation of live and silver stained specimens. Diagnoses of these species are as follows: Laurentiella strenua: body is approximately $320{\times}170\;{\mu}m$ in size, an inverted triangular shape. Cytoplasmic globules are present in both anterior and posterior margins, transparent and sized $10-15\;{\mu}m$ in live specimens. Adoral zone of membranelles is covering about 50% of body length. Frontoventral-transverse cirri are arranged diagonally into 5 rows. Transverse cirri are arranged almost longitudinally and varied 4-6 in number. Dorsal kineties are 11 rows with multiple fragmentations. Macronuclei are 4-5 in number. Notohymena australis: body is approximately $170{\times}50\;{\mu}m$ in live specimens, slender and long ellipsoidal shape. Yellowish green cortical granules are present as pairs or rows which composed of 3-6 granules. Adoral zone of membranelles is covering about 36% of the body length, composed of 39-50 adoral membranelles. Dorsal kineties is 6 rows. Macronuclei are 2 in number.

• Korean Journal of Plant Resources
• /
• v.31 no.1
• /
• pp.32-36
• /
• 2018

An unrecorded cactus species, Opuntia monacantha Haw. (Cactaceae), is newly reported in Korea. It was found growing on the coast of Jeju Island. It is distinguished from other Opuntia species by the following morphological characteristics. It is an erect succulent tree, commonly 2~3 m, but can reach 4 m. It is highly branched at the top and has drooping upper branches. The cladodes are oval to obovate, narrowing basally, and glossy green. It has yellow outer tepals with a reddish median stripe on the back. It produces purple fruit with yellowish green juicy pulp, which contains several rudimentary seeds and very few mature seeds (<2). The Korean name "Wang-seon-in-jang" is given to the species, based on the height of the plants and the large cladodes.

• Fisheries and Aquatic Sciences
• /
• v.5 no.3
• /
• pp.245-250
• /
• 2002

This study was conducted to compare the quality among commercial boiled-dried anchovies caught by different methods. Regardless of catch methods, the moisture, salinity and acid-insoluble ash contents of commercial boiled-dried anchovies ranged from $23.2-25.2\%,\;6.8-7.4\%$. and $0.32-0.46\%$, respectively. By sensory evaluation, these anchovies were less than $5\%$ in break-age, whitish or yellowish in color and had a foul smell. Judging from the above results and Korean Standards (KS) for foods, these anchovies were classified into special grade. There was no difference in total amino acid content. While, in a major mineral content, boiled-dried anchovy caught by set net (BA-SN) was the highest, and those caught by lift net (BA-LN) and tow net (BA-TN) followed in order. The lipid oxidation progressed at the slowest rate in the BA-SN, and then no difference in the lipid oxidation was found between the BA-LN and BA-TN. Judging from the results of chemical analysis and sensory evaluation, the BA-TN was the worst quality among the commercial boiled-dried anchovies. No difference in quality was found between the BA-LN and the BA-SN.

• Korean Journal of Ichthyology
• /
• v.24 no.4
• /
• pp.306-310
• /
• 2012

A hypogean gobiid, Luciogobius pallidus was described as the first record from Korea and also as the westernmost record of the species from the world, based on four specimens (31.2~53.6 mm SL) collected from Jeju Island, Korea. The species is characterized by having yellowish orange body color with I, 10~11 second dorsal fin rays, I, 10~12 anal fin rays, 13~15 pectoral fin rays, and 36 vertebrae as well as small embedded eyes beneath the skin. A new Korean name, "Juhong-mi-ggeun-mang-dug" was proposed for the species.

• Journal of fish pathology
• /
• v.25 no.1
• /
• pp.59-65
• /
• 2012

Overinflation of cardiac stomach occurred in farmed sterlet sturgeon (Acipenser ruthenus) fingerlings. Affected fish congregated and swam upside-down near the edges of the tanks with abdominal distension. When pressed the dilated abdomen, the fish often exhibited a normal swimming pattern for some time, then resumed their characteristic upside-down swimming patterns. Internally, the fish showed abdominal dropsy and dilated stomach filled with yellowish granular contents. When the contents in the stomach, fish feed, water and excrement in the farm inoculated on Sabouraud destrose agar (SDA) at $25^{\circ}C$ for 48 hr. Candida sp. were isolated except from the feed. Candida sp. in excrement or water in the farm may enter into the stomach with feed and then produce gases in the metabolic process, which in turn may cause the stomach overinflation.

• The Korean Journal of Ceramics
• /
• v.7 no.2
• /
• pp.58-62
• /
• 2001

The relationship between the addition of Sb$_2$O$_3$ and the color difference by solarization in photosensitive glasses was investigated. Glasses containing CeO$_2$ and Sb$_2$O$_3$ simultaneously and glasses with only CeO$_2$ were changed reddish and yellowish respectively after exposing to ultra violet ray. Color difference between compositions was represented by dominant wavelength and purity. Since, in glasses containing CeO$_2$ and Sb$_2$O$_3$ simultaneously, Sb$_2$O$_3$ as reduction agent affected Ce$^3+$ ions to increase in glass and more Ce$^4+$ ions were induced than in glasses with only CeO$_2$ during UV irradiation, more electrons released by photo-ionization, which were color centers, were trapped by Ce$^4+$. In conclusion, the introduction of Sb$_2$O$_3$ to photosensitive glasses with CeO$_2$ resulted in the change of color center concentration in glasses and prevented the solarization of photosensitive glasses with CeO$_2$.