• 한국식물병리학회지
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• 제11권3호
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• pp.252-257
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• 1995

Growth rates of the low temperature growing isolates, Pseudomonas fluorescens M45 and MC07, reached maximum stationary phase within 50 hrs at the low temperature, 4$^{\circ}C$. But an ordinary biocontrol agent P. putida Pf3 did not reach logarithmic growth phase until 80 hrs. The culture filtrates of M45 and MC07 significantly inhibited the mycelial growths of Pythium ultimum, Rhizoctonia solani and Phytophthora capsici. Detached cotyledons of cucumber grown on Murashige and Skoog agar medium were much enhanced in their growth, compared to those without the filtrates. Population densities of M45 and MC07 in the rhizosphere at 14$^{\circ}C$ were more stable than at 27$^{\circ}C$. When M45 and MC07 were treated into soil, the population density of MC07 continuously increased up to 9 days after treatment, and sustained the initial inoculum density up to 60 days. Cucumber damping-offs caused by P. ultimum and R. solani were significantly reduced by applying M45 as seed-inoculant and by soil treatment with MC07. The combined treatment of M45 and MC07 provided greater effect in reducing the disease incidence than that obtained by single treatments.

• Journal of Korean Neurosurgical Society
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• 제41권1호
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• pp.11-15
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• 2007

Objective : The authors attempted to confirm the risk factors for recurrent chronic subdural hematoma[CSDH] after simple burr-hole drainage. Methods : A total of 302 patients with CSDH who were treated at our hospital between January 1998 and May 2005 were studied. Various parameters considered for analysis of factors associated with CSDH recurrence; demographic and clinical findings [age, sex, history of seizures, diabetes, vascular diseases], initial and perioperative CT findings [hematoma density, location of catheter tip, post operative intracranial air, intracranial hematoma extension, hematoma width, hematoma site]. Results : Twenty-four patients [7.9%] experienced recurrence, whereas 278 patients [92.1%] did not. Five major risk factors should be considered : 1) layered type by hematoma density, 2) type I, II by location of catheter tip, 3) presence of postoperative intracranial air, 4) cranial base type of intracranial hematoma extension, 5) greater hematoma width. Conclusion : In this study, we report that the incidence of postoperative CSDH recurrence can be reduced by the examination of the hematoma characteristics on initial and perioperative CT findings and by preventing subdural air accumulation during operation. In addition, the location of the catheter tip can be used as a helpful factor in reducing the recurrence.

• 한국응용곤충학회지
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• 제42권4호
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• pp.345-352
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• 2003

논둑 불태우기의 당위성을 찾기 위하여 1995년부터 1997까지 2년동안 안동 지방 2개 지역 농가 포장에서 논둑을 태운 뒤의 잡초상, 곤충상 및 거미상과 아울러 다각적인 환경요인에 미치는 영향을 분석하였다. 분석 결과 및 기존자료들을 종합하여 볼 때 잡초상, 곤충상 및 도열병발생 등에는 별 영향이 없고 거미상 및 논둑 보존 등에는 불리하게 작용하며 더욱이 산불의 원인이 될 수 있는 등 뚜렷한 득은 없고 확실한 손실만을 초래하는 것으로 판단되어 논둑 불태우기를 절대 금하는 기초자료로 활용할 것을 건의한다.

• 한국수소및신에너지학회논문집
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• 제29권3호
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• pp.292-298
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• 2018

The contamination of photovoltaic (PV) cells reduces the incidence of sunlight and reduces the power generation output of PV cells. The main factor influencing the contamination of PV cells installed outdoors is the fine dust in the air, but the influence of temperature, humidity, rain and wind can be considered. In this paper, experiments on the contamination of PV cells according to the fine dust density, the temperature and humidity of air were investigated. As results of this study, the contamination area of PV cells increases with contamination time and cumulative fine dust density in the air. The contamination of PV cells increases when the temperature is low and the humidity is high. Also, as the contamination of PV cells is affected to the wind, the deviation of contamination area is happened.

• Journal of Pharmaceutical Investigation
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• 제19권3호
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• pp.137-143
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• 1989

This study was attempted to investigate the effect of Tricholoma matsutake on experimentally induced hyperlipemia in rats. The levels of cholesterol, triglyceride and phospholipid were measured. Diagnostic attention has been paid to the cholesterol concentration associated with high density lipoprotein (HDL), which appears to be inversely related to the incidence of coronary artery disease. For these reasons, determination of HDL-cholesterol has significant meaning. Total cholesterol was determined by Abell-Kindall method, and to measure HDL-cholesterol, serum low density lipoproteins (LDL) were first selectively precipitated by HDL-precipitating reagent. The results obtained were as follows : 1) The level of total cholesterol in serum of hyperlipemic rats was decreased by oral administration of Tricholoma matsutake extract. 2) The level of HDL-cholesterol was increased by the mushroom extract. 3) The level of triglyceride was significantly decreased by the mushroom extract. 4) The level of phospholipid was slightly decreased by the mushroom extract.

• 반도체디스플레이기술학회지
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• 제16권4호
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• pp.36-40
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• 2017

With an attempt to enhance the visibility of laser beam, we have investigated a black matrix with scattering particles by ray tracing simulations. As the scattering particle density is increased, the detected power by the receiver is increased, thereby enhancing the visibility. In reality, the visibility is reduced with increasing incident angle (away from the normal incidence) of laser beam, a phenomenon also observed by ray tracing simulations. It is due to the fact that the mean path is increased within a highly absorptive BM layer or a smaller number of rays hit the BM area when the incident angle is high. Embedding a number of scattering particles into BM may bring in crosstalk among pixels. However, it is negligible because scattered rays inside highly absorptive BM are re-scattered due to the high scattering particle density, decreasing the power of scattered rays into the active areas.

• 한국균학회지
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• 제25권1호통권80호
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• pp.10-19
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• 1997

무우품종(Raphanus sativus L.) Saxa Nova에 시들음병을 일으키는 Fusarium oxysporum f. sp. raphani (FOR)에 대해 저항성을 증가시켜 방제효과를 얻기 위하여 식물성장을 증진시키는 것으로 알려진 Pseudomonas florescens WCS374 (WCS 374), P. putida RE10 (RE10) 및 Pseudomonas sp. EN41S (EN415)을 병원균처리 토양에 단독 또는 혼합처리하여 4주간 폿트배양한 후 무우에 나타나는 외부 및 내부병징을 조사하여 처리세균에 의한 병억제 효과를 측정하였다. 내부 및 외부병징으로 대조구는 각각 46.5% 및 21.1%를 나타내었고, RE10처리는 내외병징이 각각 12.2%와 7.8%로 발병이 억제됨을 알 수 있었다. 그러나 발병억제력이 높다고 알려진 WCS374는 내외 병징이 각각 45.6%와 27.8%로 나타났다. 한편 RE10균주를 WCS374 또는 EN415 균주와 혼합하여 처리할 경우 내외 병징이 10.0-22.1% 정도이었고 EN415와 혼합처리하면 7.8-20.2%의 병징을 나타낸다. FOR의 뿌리점유율은 뿌리에서 $2.4-5.1{\times}10^3/g$였고 토양내 분포수는 $0.7-1.3{\times}10^3/g$이었다. 대조구는 뿌리에서 $3.8{\times}10^3/g$였으며 RE10의 처리는 $2.9{\times}10^3/g$로 분포수가 적었고, 3종 세균의 혼합처리는 $5.1{\times}10^3/g$으로 많이 관찰되었으나, 처리간에 통계적 차이는 없었다. 토양에서 관찰된 FOR은 부리부분 보다 그 분포 수가 적었다. 처리된 3가지 세균은 뿌리에서 $2.3-4.0{\times}10^7/g$ 범위이고, 토양에서는 $0.9-1.8{\times}10^7/g$으로 뿌리에서 관찰된 수 보다 적게 분포하였다. 뿌리부분에서 대조구나 RE10의 처리토양은 형광성 Pseudomonas spp.의 분포수가 적고 처리간에는 통계적 차이를 나타냈으나, 토양조사에서 이세균은 큰 차이를 나타내지 않았다. 뿌리에 처리된 세균과 FOR의 분포수는 토양에 처리된 것과 대조하였을 때 많았으며, 이 실험 에 사용된 RE10과 EN415은 Fusarium시들음병에 대한 기주의 저항성을 유도하는 것으로 생각된다.

• 한국환경농학회지
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• 제38권3호
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• pp.145-153
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• 2019

BACKGROUND: The 'Gamhong' cultivar, middle season apple with big fruit size and high soluble solid content, has been bred in Korea. However, it was hard to cultivate the cultivar in Korea by serious bitter pit. The relationships between shoot growth, fruit size, and bitter pit may be affected by crop load. This study was conducted for 2 years (7~8 years after planting) to investigate vegetative growth, fruit quality, bitter pit incidence, return bloom, and gross income for optimum crop load of 'Gamhong'/M.9 adult apple tree. METHODS AND RESULTS: The crop load was assigned to 4 different object ranges as follow: 45~64, 65~84, 85~104, and 105~124 fruits per tree. The vegetative growth, average fruit weight, percentage of fruits heavier than 375 g, soluble solid content, and return bloom increased significantly at the crop load range of 45~64 fruits. However, the lowest total gross income per tree may have been caused by the highest bitter pit incidence and the lowest yield per tree in any other crop load range. The total gross income and yield per tree increased significantly at the crop load range of 105~124 fruits and return bloom dropped to 40%, and hence it was possible to occur biennial bearing. It was 85~104 fruits that biennial bearing did not occur and total gross income was as high as the crop load range of 105~124 fruits. Also, the yield of high grade fruits per tree, with fruit weight of 400~499 g and none bitter pit on fruit surface, was highest at the crop load range of 85~104 fruits, compared to other crop load range. CONCLUSION: In considering fruit size, bitter pit incidence, return bloom, and gross income, the optimum crop load range of 'Gamhong'/M.9 adult apple tree in high density orchard was 85~104 fruits per tree.

• 보건교육건강증진학회지
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• 제25권5호
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• pp.53-64
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• 2008

목적. 본 연구의 목적은 골다공증의 유병률을 확인하고 건강증진 프로그램의 우선적 대상을 확인하고자 실시되었다. 방법. 연구대상자는 Ansan Health Study센터를 방문한 18-84세의 성인 남녀 1,269명이었다. 위험요인을 평가하기 위한 질문지를 이용하였고 DEXA(Dual Energy X-ray Absorptiometry)를 이용하여 2번 요추와 대퇴의 골밀도를 측정하였다. 수집된 자료는 SPSS12.0프로그램을 이용하여 분석하였다. 결과. 골밀도는 50대와 60대 여성에게서 급격히 감소하였으며, 골다공증 유병률은 대퇴와 요추를 기준으로 남성은 각각 0.8%, 6.3%, 여성은 0.9%와 7.1%로 나타났다. 골다공증 지식 정도는 골밀도와 유의한 순상관관계가 있는 것으로 나타났다. 결론. 본 연구의 결과는 골다공증 예방 프로그램을 위한 효과적이고 실제적인 중재전략을 위한 기초자료를 제공하였다.

• The Journal of Korean Physical Therapy
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• 제18권2호
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• pp.17-24
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• 2006

Purpose: This study was aimed for service to clinical data of physical therapy necessity of bone complication through analysis method of BMD (bone mineral density) used DEXA (dual energy X-ray absorptiometry) to their skeletal system for physical therapy assesement and intervention program in type II diabetic patients. Methods: Experimental group of 75 subjects and comparison group of 62 subjects were participated in type II diabetic patients(40-80 ages). BMD was measured by DEXA. BMD change of BMI score and BMD comparison of age and sex would be known. Results: This study was found that decreased BMD and increased osteopenea in type II diabetes. In particular, women were lower BMD and higher incidence of osteopenea than men. Men showed significant difference in normal group. Influence of type II diabetes was great on change of BMD in men. however, it showed no significant difference from normal group. Conclusion: it was found that skeletal system complication by type II diabetes had some relations. Because reduction of BMD had a great danger to induce trauma by fall or degenerative disease of system, evaluation of proper physical therapy for its prevention and improvement and intervention program are needed. In addition, it would be important to divide type II diabetic patients into osteopenea and osteoporosis changes of skeletal system at comprehensive aspect of physical therapy.