• Journal of Food Hygiene and Safety
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• v.10 no.4
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• pp.205-211
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• 1995

To investigate the antimicrobial effect of polyphosphates as a food additive, the growth and structural change of Listeria monocytogentes Scott A were examined in relation to polyphosphates concentration and incubation temperature. Up to 10,000 ppm of polyphosphates, the growth rate of strain was gradually inhibited with increasing polyphosphates concentration and decreasting the incubation temperature. Minimal inhibitory concentration of polyphosphates to the growth of strain was about 12,000 ppm. It was observed , using both scanning electron microscopy(SEM) and transmission electron microscopy(TEM), that 0.9% polyphosphates treatment was resulted in the destruction of cell wall and outflow of cell ingredients. The antimicrobial effects of polyphosphates were more effective than those of dehydroacetate and potassium sorbate at 13$^{\circ}C$ and 4$^{\circ}C$. The growth rate the strain in beef was significantly inhibited by the treatment of 0.9% polyphosphates and storaged at cooling temperature.

• Microbiology and Biotechnology Letters
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• v.21 no.2
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• pp.176-180
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• 1993

Survival and heat resistance of Listeria monocytogenes Scott A in various nutritional environments and cell type on stainless steel were determined. Viable cell of L. monocytogenes Scott A was most rapidly decreased in phosphate buffer among various media such as NSM (30 g TSB/1 l D.W.), LNM (2 g TSB/1 l D.W.) and phosphate buffer (pH=7) during incubation at 21 and 35C but survived for 15 days at 21C. Vegetative and starved L. monocytogenes Scott A were survived after heat treatment for 5 min at 65C while not detected at 72C.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.203-207
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• 2009

Neyman-Scott Rectangular Pulse 모형(NSRPM)은 Poisson process에 기초를 둔 모형으로 수자원분야에서는 강수자료를 생성하는데 널리 쓰이고 있다. NSRPM을 구축하기 위해서는 기존에 관측된 강수 자료를 이용하여 NSRPM의 매개변수를 추정하여야 한다. NSRPM의 매개변수를 추정 시 강수자료의 모멘트와 매개변수로 구성된 모멘트식을 비교하여 매개변수를 추정한다. 기존에 사용된 모멘트를 이용한 NSRPM의 매개변수 추정방법의 경우 매개변수로 구성된 모멘트식을 증명하여야지만 NSRPM의 매개변수를 추정할 수 있다. 또한 증명된 모멘트식이 없는 모멘트 값의 경우 매개변수 추정 시 사용하지 못하는 단점이 있다. 이런 한계점으로 인하여 NSRPM 의 수정 및 추정이 어려워 NSRPM은 널리 사용되지 못하고 있다. 본 연구에서는 매개변수 추정방법의 따른 한계점을 극복하고자 직접적인 매개변수 추정방법을 제안하였다. 직접적인 매개변수 추정방법은 모멘트 식을 이용하지 않고 생성된 자료를 이용하여 직접적으로 매개변수를 추정하는 방법이다. 본 연구의 대상지점은 금강유역의 대전으로 선정하였으며, 사용된 자료는 기상청에서 운영하는 대전 지상관측소 강수자료를 사용하였다. 총 39년의 자료를 이용하여 각 방법을 이용하여 매개변수를 추정하였다. 실험결과 직접적인 추정방법이 기존 매개변수 추정방법보다 더 정확한 매개변수를 추정하는 것을 확인 할 수 있었다.

• Journal of Electrical Engineering and Technology
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• v.13 no.3
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• pp.1398-1406
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• 2018

Owing to the consistent increase in accurate analysis issue for energy consumption of the AC electric railway systems, there is controversy about the adequacy of the present watt-hour metering configuration. Due to the unusual load characteristics and facilities, the discussions have not been active. Therefore, in order to achieve more accurate watt-hour metering for AC electric railway system, this paper proposes numerical formulas for watt-hour metering that reflects the highly-varying characteristics of the railway load and the structural characteristics of the Scott transformer. The proposed formulas have been verified by comparison with site-measured data, and a more suitable metering configuration for AC railway system has been proposed.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.17 no.1
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• pp.54-60
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• 2003

Feeding traction loads from the public power system may lead to some current and voltage unbalance and consequently affects the operation of its energy-supply system and other equipment connected with it. This paper introduces an analysis of the current unbalance caused by the demands of an electric railway on a public power system. And the results with compensator and without compensator are simulated, and eventually the formula about the current unbalance is suggested. The Scott-connected transformer is adopted in Korea National Railway System. So Scott-connected transformer among the various transformer connection schemes is analyzed in this paper. Also, the formulas about the unbalance and compensating current can be derived by using two parameters(M-phase and T-phase current) of secondary Scott-connected transformer. So, the practical and accurate simulation can be done through dynamic models by using scheduling of traction.

• Journal of Acupuncture Research
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• v.30 no.4
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• pp.197-202
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• 2013

Objectives : Hemifascial spasm is painless uncommon disorder characterised by involuntary paroxysmal movement of one side of face. In this study, the effect of meridian tendino-musculature acupuncture and pharmacopuncture therapy for two patient with hemifascial spasm were evaluated. Methods : We treated two patients with meridian tendino-musculature acupuncture and placenta pharmacopuncture therapy in sternocleidomastoid muscle. We evaluated the effect by Scott's scale and treatment satisfaction. Results : Before therapy, the grade of spasm intensity classified by Scott's description in two cases were 3. After therapy, the Scott's grade of one case was 0, and another case were 1. Conclusions : Meridian tendino-musculature acupuncture and placenta pharmacopuncture therapy in sternocleidomastoid muscle for hemifascial spasm was effective and will be attemped to the patients with it.

• Journal of the Korean Society of Food Science and Nutrition
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• v.23 no.2
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• pp.293-297
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• 1994

The effect of organic acids on growth and heat resistance of Listeria monocytogenes Scott A were investigated. The growth of L. monocytogenes was inhibited in Tryptic Soy Broth(TSB) with 0.1 or 0.2% of acetic , tartic , propionic , citric and lactic acid at 35$^{\circ}C$, respectively. The growth of l. Monocytogenes did not occur in TSB with 0.2% of acetic acid or propionic acid during 48h of incubation. The heat resistance of L.monocytogenes was affected by kind of organic acid, ph and heating substrate. L.monocytogenes showed more heat resistant in TSB with various organic acids than in 0.1M sodium phosphate with the same organic acids. Heat resistance decreased as pH of heating substrate decreased . Surface-adherent microcolony was more heat resistant than planktonic cell of L. monocytogenes. Propionic and lactic acids more affected on heat resistance of L.monocytogenes than acetic , tartaric and citric acids.

• Journal of Acupuncture Research
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• v.36 no.1
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• pp.55-58
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• 2019

The aim of this study was to investigate the efficacy of treatment with thread-embedding therapy for 24 patients with hemifacial spasm (HFS). The muscle spasm of these patients was treated with thread-embedding therapy. Patients with nuchal pain were treated with tendino-musculature acupuncture in the sternocleidomastoid, splenius, and trapezius muscles. We evaluated the treatment effect using the Scott's scale, where 20, 3, 1, and 0 patients presented Scott's grade 0, grade 1, grade 2, and grade 3, respectively. The grade of the spasm intensity decreased noticeably after treatment. The results revealed that the Scott's grade changed to 0 in 83.3% of HFS patients, and 91.7% patients felt satisfied with thread-embedding therapy. These findings suggested that thread-embedding therapy was effective and can be used widely for HFS.

• Animal Systematics, Evolution and Diversity
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• v.38 no.4
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• pp.157-161
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• 2022

Parartotrogus minutus n. sp. is described as a parasite of the brittle star Ophiuroglypha kinbergi (Ljungman) from the intertidal zone on the Yellow Sea coast of Korea. The new species is characterized by a combination of morphological features that the body is small, less than 0.5 mm long, the caudal ramus is 1.73 times longer than wide, leg 3 bears three-segmented rami, and the exopod of leg 5 is armed with two setae. The new species is the third known species in the genus, following P. richardi Scott T. and Scott, A., 1893 known from European waters and P. arcticus Scott T., 1901 known from both North Atlantic and North Pacific.

• KOREAN POULTRY JOURNAL
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• v.3 no.10 s.24
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• pp.57-59
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• 1971