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RISS 인기검색어
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- 저자 : Deok Ho Kwon,Ji Hyun Park,Patil Anandrao Ashok,Unggyu Lee,Si Hyeock Lee (검색결과 382 건)
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권호근,김영남,정기호,송근배,박덕영 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.3
The purpose of this study is to estimate the National Health Insurance budget needed for the Korean elderly's denture service coverage. For more exact estimating the budget, denture need and demand were calculated by using 2000 National Oral Health Survey data. The results were summarized as follows ; 1. Over 65 years old, full denture and partial denture need per arch were each 8.5% and 16.8%. And over 70 years old, those were each 11.3% and 17.8%. 2. Over 65 years old, full denture and partial denture demand per arch were each 22.8% and 21.2%. And over 70 years old, those were each 27.%% and 21.1%. 3. Based on the denture need, the health insurance budget needed in the first operative year was about 955.4 billion won, over 65 years old and about 644.2 billion won, over 70 years old. 4. Based on the denture demand(wear), the health insurance budget needed in the first operative year was about 207.5 billion won, over 65 years old and was about 151.6 billion won, over 70 years old. If health insurance policy of elderly's denture service coverage is performed, actual denture wear rate is going to increase, and the budget needed is also increasing. Because current National Health Insurance budget status is poor, it is difficult to execute health insurance coverage for elderly's denture service. Therefore we suggest that health insurance coverage for preventive service is to be considered in order to reducing denture need in the long term view.
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권순정,손덕영,최윤호 한국의료복지시설학회 2008 의료·복지 건축 Vol.14 No.4
Construction and operation of Germ Free Pigs' facilities are very expensive because pigs' rooms and other major rooms of the facility require germfree environments. Especially, running the HVAC system of aseptic facilities requires a lot of expenses. However proper location and efficient shape of outlets/inlets for the ventilation of the room can reduce the excessive running cost. In order to do that, this study proposes alternative location and shape of ventilation outlets/inlets to the existing design pattern in germfree pigs' room. The design condition of this study is the maintenance of adequate temperature(24'C), NHs concentration level(below 1.5 ppm), and air stream speed(be1ow .25m/sec) in the pigs' room for the summer and the winter together. As the Software Program, FLUENT(Ver. 6.2) has been used for the analysis of proposed ventilation patterns, In conclusion, wall inlets and ceiling inlet/outlet are advisable in summer, wall inlets and ceiling outlets is advisable in winter. As far as the shape is concerned, diffuser type for the ceiling outlet is desirable.
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감마선과 Methyl Bromide 처리가 사과의 생리화학적 품질에 미치는 영향
강호진,정헌식,조덕조,변명우,최성진,최종욱,권중호 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2003 한국식품저장유통학회지 Vol.10 No.3
감마선(0, 0.5, 1, 2, 3 kGy) 조사와 methyl bromide(MeBr, 26 g/㎏, 4hr) 훈증 및 이들의 처리시기가 사과의 생리화학적 품질특성에 영향을 비교하여, 검역처리를 위한 ◁그림 삽입▷ (원문을 참조하세요) 감마선 조사의 응용성을 검토하였다. 감마선과 MeBr 처리에 따른 사과의 생리화학적 품질평가에서 2kGy 이상의 감마선 조사와 MeBr 훈증은 사과의 일부 생리화학적 품질특성의 변화를 촉진시키는 것으로 나타났다. 감마선과 MeBr의 처리시기별로는 수확 직후보다는 저온(0℃)에서 40일 정도 보관 후 처리한 대체적으로 품질손상이 적은 것으로 나타났다. 따라서 1kGy 이하의 감마선 조사와 지연조사는 사과 과실의 품질을 비교적 양호한 상태로 유지할 수 있어 검역처리 기술로 활용성이 있는 것으로 생각된다. 'Fuji' apples were treated by gamma irradiation (0∼3 kGy) or methyl bromide fumigation at commercial conditions (MeBr, 25 g/㎏, 4 hr) for quarantine purpose at two different treatment timing after harvest and stored under air a 0℃ for 4 months. Associated with the treatment timing of irradiation or fumigation, after 40 days of storage at 0℃ following harvest was more adequate than immediately after harvest in keeping qualities of stored apples. However, more than 2 kGy irradiation and MeBr fumigation were detrimental to physiological and chemical qualities of the fruits. These results show that less than 1 kGy irradiation at the delayed timing has a possibility to be applied as a quarantine procedure without significant changes in the quality of apples.
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Deok Ho Kwon,Deok Jae Cha,Young Ho Kim,Si Woo Lee,Si Hyeock Lee 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.10
A carbofuran-resistant strain (CAS) showed ca. 41.1- and 15.1-fold resistance compared to a susceptible strain (SUS) and a non-selected field strain (FM), respectively. Enhanced activities of carboxylesterase and P450 were found as ca. 3- and 1.6-fold higher in CAS strain, suggesting these enzymes play a minor role in carbofuran resistance. Interestingly, the insensitivity of acetylcholinesterase (AChE) to carbofuran was revealed to be ca. 5.5- and 3.7-fold higher in CAS strain compared to, indicating that AChE insensitivity mechanism is associated with carbofuran resistance. In the western blot analysis, two kinds of AChEs were found and type-1 AChE (Nlace1) was identified as the major AChE in N. lugens. The open reading frame of Nlace1 is composed of 2,106 bp (ca. 78 Kd) and revealed 52.5% and 24.3% identity compared with Nephotettix cincticeps and Drosophila melanogaster, respectively. In the screening of point mutations, four amino acid substitutions (G119A, F/S330Y, F331I and H332L) were identified in the CAS strain that likely contribute to the AChE insensitivity. The allele frequencies of these mutations increased in the survived populations following the selection by LC50 of carbofuran, confirming that they are in fact associated with reduced sensitivity to carbofuran in N. lugens. These point mutation can be useful for the monitoring of resistance levels in conjunction with QS methods.
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Deok Ho Kwon,Si Woo Lee,Ji Hyeon Park,Si Hyeock Lee 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.10
The resistance levels against carbamates (CB) and organophosphates (OP) were determined through bioassay and quantitative sequencing (QS) methods in 16 field populations of Nilaparvata lugens. The resistance levels to CB and OP by bioassay were 1.3~47.5-fold and 1.4~14.4-fold higher than a susceptible strain, respectively. The QS protocol was established to determine the allele frequencies of eight point mutations on acetylcholinesterase putatively associated CB and OP resistance. The allele frequencies of four mutations in local populations (G119A, F/S330Y, F331H and I332L) ranged from ca. 0.0~51.7%, 1.0~44.3%, 8.5~57.3% and 7.12~56.6%, respectively. The average prediction limits were –9.6±5.1~7.7±2.9%. The F330Y, F331H and I332L were tightly linked each other, suggesting these mutations may occur simultaneously. In the correlation analysis, G119A was not well correlated with both insecticides (r2= less 0.25), whereas F/S330Y, F331H and I332L showed better correlation with the resistance levels of carbamate (r2=0.590) than organophosphate (r2=0.235). This finding indicates that F/S330Y, F331H and I332L mutation frequencies are suitable for detecting carbamate resistance in N. lugens. QS will be applicable for the rapid monitoring of resistance levels to CB insecticides in N. lugens.
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Deok Ho Kwon,Ji Hyeon Park,Si Hyeock Lee 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.10
The screening of effective lethal genes was conducted via the systemic delivery of dsRNA for the RNAi-based management of Tetranychus urticae. Six candidate genes (COPI coatmer, T_COPI; ESCRT III_Snf7, T_SNF7; Ribosomal protein S4, T_RPS4; v-ATPase A subunit 2, T_V-ATPase; Aminopeptidase N, T_APN3; Acetylcholinesterase, T_AChE) and two reference genes (EGFP and T_AChEintron) were tested for the experiment. The permeated dsRNA to the leaf disc (ca. 30 mm diameter) was detected at 6 h after treatment, indicating that dsRNA could move through veins on the leaf. In the reference gene selection, the T_AChEintron was chosen for its low mortality compared with EGFP gene. In the evaluation of mortality, the T_COPI, T_V-ATPase and T_RPS4 exerted higher toxicities at 24 hour after treatment among six genes tested. Interestingly, T_APN3 showed toxicity after 72 hour. In summary, the dsRNA delivery via leaf disc was effective in screening lethal genes and some genes, such as COPI, V-ATPase and RPS4, can be applicable for establishing a RNAi-based control system against T. urticae.
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Kwon, Deok Ho,Jeong, In-Hong,Hong, Sung Jun,Jung, Myung-Pyo,Kim, Ki-Su,Lee, Si Woo,Lee, Si Hyeock 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol. No.
<P><B>Abstract</B></P> <P>The small brown planthopper (SBPH, <I>Laodelphax striatellus</I> Fallén) is an important pest that causes severe yield losses in rice by transmitting viral plant diseases. For the proper management of this pest, therefore, it is necessary to understand its temporal and spatial dynamics by establishing a periodical monitoring system. A dataset, including the number of SBPHs by location, collection method [aerial collection net (AeCN) or light trap (LT)] and period (May–Aug.) for five years (2011–2015) was provided by the Rural Developmental Administration, and missing values were imputed using multiple imputation methods. Of the 15,848 individuals collected, approximately 47% and 52.9% were collected using the AeCN and LT methods, respectively. Large numbers of SBPHs were generally collected from western coastal regions using AeCNs but not LTs. A high incidence of migratory SBPHs was observed during Julian days 144–166 using the AeCN method, with slightly different migration periods in each year. Generally, the migratory SBPHs made up 39.4% of the total populations of SBPHs during those periods. According to clustering analysis, the migratory region was located along the western coastal regions. Putative migration paths were estimated by trajectory cluster analyses using meteorological data. Interestingly, an L-shaped trajectory path emerged as a potentially important route for migratory SBPHs, passing through major wheat cultivation areas in Henan, Anhui, Jiangsu, and Zhejiang provinces in China, where high densities of SBPHs occur from late May to early June. These results would provide valuable information to predict the incidence period of migratory SBPHs and establish a proactive management system against SBPH, including the basis for the detection of hazardous factors and decisions regarding appropriate pesticide treatment periods.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The occurrence and incidence of SBPHs were analyzed using NCPMS data. </LI> <LI> Migratory SBPHs from China composed 39.4% of the total populations during 2011–2015. </LI> <LI> Migratory SBPHs might be migrated into Korea by the L-shaped trajectory path. </LI> <LI> NCPMS data would be helpful for the proactive management of SBPH. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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