• Journal of Biosystems Engineering
• /
• v.35 no.3
• /
• pp.169-174
• /
• 2010

This study was conducted to investigate the effect of abrasive processing and non abrasive processing in the milling process on the quality of rice. The effect was analyzed based on the factor such as whiteness, grain temperature, moisture content, crack and broken rice ratio. The results were as followings. Whiteness of abrasive rice was the same as non abrasive rice. The rice temperature increase of abrasive rice was $1.6^{\circ}C$ lower than non abrasive rice. The crack ratio was increased in the process of milling and non abrasive rice showed higher values than abrasive rice. The broken rice ratio of the using abrasive processing was about 0.05% lower than that of non abrasive processing. The moisture content decreased in the process of milling regardless of the use abrasive rice milling machine.

• Journal of Biosystems Engineering
• /
• v.31 no.6 s.119
• /
• pp.529-534
• /
• 2006

The greenhouse heating system with far-infrared heater was built to analyze various thermal characteristics, such as greenhouse air temperature, soil temperature, energy flow, energy consumption in far-infrared heater, and other factors, which could be used in comparison with other greenhouse heating system in this study. The results showed that the inside air temperature of the far-infrared greenhouse heating system was $5^{\circ}C$ higher than that of hot air heating system. Heat loss of daytime was found to be larger than that of night time as much as 44.8% for the heating system with far-infrared heater. In the heating system with far-Infrared heater, when the lowest ambient temperature was -8 $\sim$ -7$^{\circ}C$, the air temperature of greenhouse was 12 $\sim$ 15$^{\circ}C$, thus the far-infrared heating system was shown to be feasible for heating system. Energy consumption of far-infrared heating system was shown to be less than that of hot air heating system.

• Clinical and Experimental Pediatrics
• /
• v.49 no.5
• /
• pp.570-573
• /
• 2006

A healthy, 14-year-old boy presented with right hip pain and consequent fever after falling out of bed while sleeping. The patient could not walk and complained of severe pain with active and passive motion, which consisted mainly in extension and internal rotation of the right hip. Laboratory analysis of the peripheral blood identified leukocytosis and increased levels of acute phase reactants. Magnetic resonance imaging of the hip, which was performed with the expectation of right hip pathology, revealed cellulitis and abscess in the right psoas muscle and associated inflammatory changes in the adjacent presacral fat plane but showed no abnormal lesions in the adjacent pelvic bone and spine. Staphylococcus hominis was cultured from the blood. With empirical antibiotic therapy, the patient recovered fully. We report a case of primary psoas abscess confused with hip pathology in an immunocompetent child without underlying disease.

• The Korean Journal of Pain
• /
• v.3 no.2
• /
• pp.125-130
• /
• 1990

One hundred patients requiring appedectomy were studied to determine the minimal effective dose of intrathecal morphine for postoperative analgesia. In double-blind fashion, groups of 20 patients received either 0.02 mg (group I), 0.04 mg (group II), 0.06 mg (group III), 0.08 mg (group IV), or 0.10 mg (group V) intrathecally with 10% dextrose in water 2 ml. Group II to group V patients reported significantly less postoperative pain than group I patients as assessed by the Prince Henry pain scale and required significantly fewer analgesic interventions for 24 hours. The incidences of vomiting and pruritus were considerably high in all groups, but none of them required any treatment. The incidence of urinary catheterization due to urinary retention in group II to V was twice that of group I. No clinically evident respiratory depression occurred in any of the subjects. In conclusion, intrathecal morphine administration of 0.04 mg proved effective in reducing postoperative analgesic requirements and in eliminating postoperative pain following appendectomy and was not associated with significant side effects. It is very likely that such low dose intrathecal morphine would also work in other operations.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2014.11a
• /
• pp.45-48
• /
• 2014

최근 국내외에서 모든 사물이 인터넷에 연결되는 초(超)연결혁명이 진행 중이며, 앞으로 사물인터넷 기반의 다양한 혁신과 사업기회가 창출될 것으로 전망되고 있다. 하지만 국내의 경우 세계 최고 수준의 광대역 방송통신 인프라 및 IoT 기기 제조역량 등을 갖추고 있으나, 표준 기반의 개방형 IoT 플랫폼의 부재로 국내 기업의 시장 진입이 어려운 상황이다. 대기업은 개별적으로 플랫폼을 개발중이나 글로벌 시장에 대한 주도력이 부족하고, 중소기업은 플랫폼 부재로 시장진입이 어려워 향후 스마트 폰 산업에 이어 IoT 산업마저 글로벌 기업에 종속될 우려가 있다. 이에 본 논문에서는 국내외 다양한 분야의 기업들이 참여하여 다양한 홈 IoT 제품과 서비스를 개발할 수 있도록 특정 플랫폼이나 솔루션에 제약 없이 다양한 IoT 기기를 연결, 제어가 가능한 표준 기반의 개방형 홈 IoT 서비스 제공 방안을 연구하였다. 실험 결과에서는 제안된 개방형 홈 IoT 플랫폼을 통해 Z-Wave, IP, ZigBee, IrDA 등 다양한 통신 방식을 사용하는 홈 IoT 기기를 제어하고 정보 수집하여 사용이 가능함을 보여주었고, 이를 기반으로 플랫폼을 빅데이터 기술 및 기계학습 기능을 추가적으로 고도화하면 다양한 사물로부터 수집된 정보와 방송 정보, 웹 정보 등을 융합한 서비스 제공 등 소비자 중심의 창의적인 신규 방송통신 융합서비스 제공이 가능할 것으로 기대가 된다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2008.05a
• /
• pp.714-718
• /
• 2008

최근 다양한 기상 이변과 해수 온도 상승으로 인해 더욱 빈번하게 발생하고 있는 국지성 집중 호우 및 돌발홍수는 각 유역 특성별 수문 기초자료의 축적 및 분석을 더욱 요구하고 있다. 또한, 수문현상은 시간과 공간에 따른 큰 변동성을 가지고 있어 규명하기 복잡한 특성을 가지고 있다. 특히 산악지역이 많은 우리나라의 지형학적 특성과 최근의 집중 호우 특성 등으로 인하여 이러한 변동성이 더욱 커지고 있다. 집중 호우시 인명과 재산의 피해가 더 가중되는 도시 지역은 더욱더 중요하다. 도시지역의 수문 모니터링이 부족한 실정을 고려한다면 도시하천별, 소배수구역별 수문 관측 및 자료 분석이 절실하다. 우리나라 주거지역의 토지이용 형태를 반영하는 과학적이고 체계적인 도시하천 수문 모니터링시스템 운영 및 자료 축적, 제공이 필요하다. "도시홍수재해관리기술연구사업단"에서는 도시하천 유역의 수문현상 규명을 위한 기초 정보 축적을 위해 중랑천 유역에 시험배수구역(신내1 배수구역, 군자 배수구역, 어린이대공원 배수구역)을 운영하여 수문 관측 및 자료 분석을 수행하고 있다. 본 연구에서는 도시하천 시험유역의 운영 결과와 미흡한 부분을 개선하기 위해 보완한 내용을 소개하고자 한다. 또한, 도시하천 시험유역 운영시 인식해야할 중요한 사항에 대해 조사하였다. 이러한 결과는 향후 도시하천 시험유역 선정 및 운영, 수문자료 분석에 활용될 것으로 판단된다.

• Korean journal of applied entomology
• /
• v.41 no.3
• /
• pp.177-181
• /
• 2002

This study investigated seasonal occurrence of Frankliniella occidentalis and its damage on chrysanthemum from 1999 to 2000. F. occidentalis adults were attracted to yellow sticky traps from early April to harvesting time in the field. The highest densities were observed from late April to mid-June in spring culture and from mid-August (just after transplanting) to early September in autumn culture respectively. Seasonal fluctuation in a PVC green house was similar to that in the field. Number of insects per flower were higher in the green house than that in the field. Leaf damages due to the insects were observed from mid-May and increased as chrysanthemum grows (R$^2$ = 0.9200-0.9887$\^$**/, p> 0.01).

• Korean Journal of Materials Research
• /
• v.12 no.2
• /
• pp.121-128
• /
• 2002

Anodic alumina layer can be used as templates for preparation of nano-structured materials, because porous oxide layer on aluminum shows a uniform pore size and a high pore density. In order to find out possibility for template material to prepare nano wire, the effects of the anodic applied potential, anodic time and the temperature of electrolyte on pore diameter of anodic alumina layer were studied using SEM and AFM. The pore diameter of anodic alumina layer increased with applied anodic potential and electrolytic temperature. Especially, the pore diameter of anodic oxide layers formed in chromic acid can be well replicated by widening process in $H_3$$PO_4$solution.

• Korean Journal of Clinical Pharmacy
• /
• v.5 no.2
• /
• pp.1-12
• /
• 1995

The purpose of this investigation was to determine pharmacokinetic parameters of gentamicin using linear least square regression(LLSR) and Bayesian analysis in Korean normal volunteers and appendicitis patients. Nonparametric expected maximum(NPEM) algorithm for population pharmacokinetic parameters was used. Gentamicin was administered every 8 hours for 3 days by infusion over 30 minutes. The volume of distribution(V) and elimination rate constant(K) of gentamicin were $0.215\pm0.0562,\;0.226\pm0.0325L/kg\;and\;0.339\pm0.0443,\;0.357\pm0.0243hr^{-1}$ for normal volunteers and appendicitis patients using LLSR analysis. Population pharmacokinetic parameters, VS and KS were $0.228\pm0.0614L/kg\;and\;0.00356\pm0.00041(hr{\cdot}mL/min/1.73m^2)^{-1}$ for appendicitis patients using NPEM algorithm. The V and K were $0.232\pm0.0568L/kg\;and\;0.337\pm0.0385hr^{-1}$ for appendicitis patients using Bayesian analysis. There were no differences in gentamicin pharmacokinetics between LLSR and Bayesian analysis.

• Korean journal of applied entomology
• /
• v.10 no.2
• /
• pp.85-89
• /
• 1971

An investigation was carried out to know the host range of the rice stripe virus as a basis of the disease control. 1. In order to investigate the host range of the rice stripe virus 30 species including gramineaceae and forage crop and weeds were inoculated with viruliferous Laodelphax sriatellus Fallen. As a result, 21 out of 30 species showed typical symptoms. 2. Cyperus amuricus Maximowicz var. laxus., Pycreus sanguinolentus Nees. and Eriocaulon robustius Makino, not belonging to gramineaceae were known to be new host plants of rice stripe virus. The highest infection occurred on Pycreus sanguinolentus grown widly in the wet paddy fold. 3. The number of vectors inoculated on the plants was decreased after 48 hours than that of 24 hours.