• Journal of fish pathology
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• v.33 no.1
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• pp.55-62
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• 2020

In order to search candidates for the treatment of myxosporean emaciation disease of olive flounder, Paralichthys olivaceus, in vitro and in vivo experiments were conducted using products such as Coxi-stop, Coxiclin, and BLEAN80. In the case of Coxi-stop, whose major component is toltrazuril, in vitro experiment using BF-2 cells showed a tendency of reducing the activity of myxosporea and did not exhibit cytotoxicity such as cell lysis. In the in vivo activity measurements, the experimental group immersed with Coxi-stop showed a lower cumulative mortality rate than the control group, this result is similar to the previous report that toltrazuril has a therapeutic effect on parasitic fish disease. This study suggests that toltrazuril is a potential candidate for the treatment of emaciation disease of olive flounder.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.41 no.7
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• pp.63-70
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• 2004

This paper describes the link layer and physical layer of the Serial ATA which is the next generation for parallel ATA specification that defines data transfer between PC and peripheral storage devices. The link layer consists of CRC generation/error detection, 8b/10b decoding/encoding, primitive generation/detection block. For the physical layer, it includes CDR(Cock Data Recovery), transmission PLL, serializer/de-serializer. It also includes generation and receipt of OOB(Out-Of-Band) signal, impedance calibration, squelch circuit and comma detection/generation. Additionally, this chip includes TCB(Test Control Block) and BIST(Built-In Selt Test) block to ease debugging and verification. It is fabricated with 0.18${\mu}{\textrm}{m}$ standard CMOS cell library. All the function of the link layer operate properly. For the physical layer, all the blocks operate properly but the data transfer is limited to the 1.28Gbps. This is doe to the affection or parasitic elements and is verified with SPICE simulation.

• Korean journal of applied entomology
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• v.34 no.4
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• pp.295-299
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• 1995

This study was conducted to find the control methods, status of overwintering and seasonal occurrence of Erioccoccus largerstroemiae on persimmon trees in Ch'ondo area, Kyongbuk province in Korea. Usually, overwintering eggs were sheltered in bark, among them the rate of alive eggs was 28.7%. The activiation of garpe-myrtle scale showed from late April, and they have three generations per year. The first occurrence of larval stage of Erioccoccus largerstroemiae starts from late June to early July, the second occurrence begins from middle August to late August, and from late June to early July, the second occurrence begins from middle August to late August, and from middle September to late September is the third, thus, three peaks of occurrence revealed in early July middle August, and late September respectively. Average number of eggs conceived in female adult was 229.3. Spray effect of chemical control showed as follows; lime sulfur with tow applications of pesticides (late June, late August) at 97.8%, machine oil with tow applications of pesticides (late June, late August) at 96.8%. And during the growing period, the spray results using three applications of pesticide only (late June, late August, amid September) showed 77.2% in field condition.

• Korean journal of applied entomology
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• v.19 no.2 s.43
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• pp.67-72
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• 1980

A mosaic virus disease of ginger plant was investigated to determine its virus group on the basis of host range, physical and chemical properties, serological behavior and electron-microscopic morphology. The disease gave rise to yellowsih and dark-green mosaic on the leaves in the early stage and stunted all the leaves as well as rhizomes in the late stage. In the field about 43\% of the plants were observed to be diseased The disease was able to be artificially infected to the ginger plants by the sap and transmission as well as to 23 other species of plants which were known to be the CMV susceptible plants by the sap transmission; Chenopodium amaranticolar, Nicotiana tabaccum var. Havana, cow pea, cucumber, tomato,... etc. The dilution end point of the virus ranged $10^{-4}-10^{-5}$ and the thermal inactivation point $65-70^{\circ}C$. Serological test showed a positive reaction by a CMV antiserum. An electron microscopy of the purified virus showed that the virus particles were spherical with a diameter of $28-32m\mu$. Virus particles from the infected tissue were observed to be free or aggregated in the mesophyll tissue of artificially infected tobacco plant. The mosaic disease of ginger plants were conclusively suggested to the CMV group.

• Korean Journal Plant Pathology
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• v.3 no.3
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• pp.159-163
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• 1987

In order to investigate the distribution and density of root-knot nematodes in economic crops, samples were collected from 3,226 fields of 18 economic crops. Nematodes were extracted using a modified Baermann's funnel technique. Identification of races was based on the differential host-test for Meloidogyne spp. by Tayler and Sasser. M. hapla was dominant in fields in the middle parts of Korean peninsula; M. incognita, in the southern parts, and distribution of M. javanica was limited to Jeju island and southern seaside areas. Two races of M. arenaria identified in this study were races 1 and 2. The three races identified in M. incognita were races, 1, 2 and 3. Of these races, race 1 of M. arenaria and race 3 of M. icognita were identified for the first time in Korea.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.19 no.8
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• pp.933-939
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• 2008

In this paper, a new composite electromagnetic bandgap(EBG) structure using magnetic materials is proposed for simultaneous switching noise(SSN) suppression in the high-speed digital circuits. The proposed EBG structure has periodic unit cells of square-patches connected by spiral-shaped bridges. The magnetic materials are located on the unit cells of spiral-shaped EBG. The real part of the permeability shifts bandgap to the lower frequency region due to the increased effective inductance. The imaginary part of the permeability has magnetic loss that decreases parasitic LC resonance peaks from between the unit cells. As a result, the proposed structure has the lower cut-off frequency compared with conventional EBG structure and -30 dB SSN suppression bandwidth from 175 MHz to 7.7 GHz. The proposed structure is expected to improve the power integrity and reduce the size of the EBG power plane.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.22 no.5
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• pp.568-575
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• 2011

In this paper, we propose a small broadband antenna for mobile device. The proposed antenna consists of a printed rectangular monopole antenna and a parastic element connected to ground using narrow meander line and it is designed on a FR-4 substrate that has a thickness of 0.8 mm and a dielectric constant of 4.4. The FR-4 substrate's size is 50 mm${\times}$90 mm comparable to the real mobile device. The fabricated antenna's size is 12.5 mm${\times}$10.5 mm${\times}$0.8 mm and the measurement shows -10 dB return loss bandwidth of 2,200~6,000 MHz and gains of 2.86~4.01 dBi. Accordingly, the proposed antenna can support mobile device for WiBro(2,300~2,380 MHz), WLAN(IEEE 802.11b/g/n: 2,400~2,480 MHz, IEEE 802.11a: 5,150~5,825 MHz), and mobile WiMAX(IEEE 802.16e : 2,500~2,690 MHz, 3,400~3,600 MHz) service bands.

• Parasites, Hosts and Diseases
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• v.27 no.3
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• pp.197-202
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• 1989

This study was performed to observe the susceptibility of dogs and cats as definitive hosts of Paragonimus ilektsuenensis. The metacercariae of this luke were obtained from Sesarma dehaani collected at a focus near the mouth of Sumjin river in November, 1986 and February, 1987. The larvae isolated from the crabs were introduced Per os into 7 albino rats, 2 dogs and 3 cats. The adults were recovered from the experimental animals, End they were morphologically observed and measured. The results were as follows: 1. The recovery rate of adult worms at 42 days after infection was 53.3% from three albino rats, 21.0% from a dog and 12.7% from two cats. Most of the worms were recovered from the worm capsules in the lungs. 2. The size of worms recovered from albino rats, a dog, and cats 42 days after infection aver-aged $6.3{\times}3.2mm,{\;}6.3{\times}3.0mm,{\;}or{\;}6.2{\times}3.5mm$, respectively. There were little differences in the morphology of worms by different experimental animals. 3. The size of eggs from a dog was $88.9{\times}49.3{\mu\textrm{m}}$, and that from cats was $84.3{\times}53.7{\mu\textrm{m}}$ on average. Dogs and cats were good definitive hosts of p. iloktsuenensis. This fact suggests that human infection by this luke may be possible if the metacercariae were ingested.

• Tuberculosis and Respiratory Diseases
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• v.51 no.5
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• pp.474-481
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• 2001

Mesalazine(5-Aminosalicylic acid,5-ASA), a component of Sulfasalazine (sulfapyridine bound to 5-ASA), is used to treat inflammatory bowel disease. Most adverse pulmonary effects caused by sulfasalazine have been attributed to sulfapyridine. However, lung toxicity associated with mesalazine(5-ASA) is rare. Here we report a case of eosinophilic pneumonia in a 44-year-old woman with ulcerative colitis, who was treated with mesalazine. She developed symptoms of a dry cough, mild night fever, and exertional dyspnea. Bilateral peripheral pulmonary infiltrates, peripheral blood eosinophilia, and histologic features were consistent with eosinophilic pneumonia. The symptoms improved quite rapidly after the discontinuation of mesalazine and initiation of steroid therapy. Therefore, adverse pulmonary reactions to mesalazine must be considered in a differential diagnosis of pulmonary involvement in patients with inflammatory bowel disease who are receiving with mesalazine therapy.

• Journal of Veterinary Clinics
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• v.19 no.4
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• pp.433-435
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• 2002

Ceotrichum candidum was identified from 2 dogs among 52 dogs which had various dermatological problems. One was 5-month-old male Labrador and the other was 7-month-old female German Shepherd. The diagnosis was confirmed by direct microscopy of the specimen as well as cultured isolation of the fungus from the cutaneous lesions. The. organism showed septate hyphae and rectangular to cylindrical arthrospores and no blastospores. Urea was not utilized and no assimilation of maltose was observed. Clinical improvement was occurred by application of 2% gentian violet and 2% miconazole solutions. It is suggested that this organism should be included in the differential diagnosis of canine dermatitis.