• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.44 no.2
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• pp.139-155
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• 2016

Present paper introduces the recent advances in space launch vehicle technologies. A brief survey is given for the space development programs in civil sector with their business model and key technologies. Advances in key technologies were reviewed in detail with more emphasis on the electric pump cycle engine for low cost high performance small launch vehicle, Electron, under development by Rocketlab Ltd., since their contributions would give good lessons for rocket scientists.

• The Korean Journal of Food And Nutrition
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• v.15 no.4
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• pp.382-385
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• 2002

It is well known that the Petasites japonicum have been used for a long time in traditional medicine for the treatment of allergic diseases such as lacquer poisoning and asthma. Anti-allergic actions of Petasites japonicum extracts were asessed by testing their effects on the degranulation of mast cells. For this, hexosaminidase released (degranulation marker) from RBL-2H3 cells(mast cell line) was used. At the concentration of 300 $\mu\textrm{g}$/mL of the methanol, ethylacetate and hot water extract, the degranulation of RBL-2H3 cells were inhibited 83.33, 69.75 and 35.4%, respectively. These results suggest that the Petasites japonicum could be provide a effective resource for the control of allergic diseases.

• Pediatric Infection and Vaccine
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• v.22 no.1
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• pp.36-39
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• 2015

Typhoid fever can cause serious complications, such as enterobrosia, meningitis, pneumonia, myocarditis, hepatitis, osteomyelitis, and disseminated intravascular coagulation in 10-15% of the patients. Kidney complications are very rare, and a few cases have been reported in children. We are reporting a case of childhood typhoid fever complicated with acute nephritis present with albuminuria, hypertension, and renal failure.

• Childhood Kidney Diseases
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• v.11 no.2
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• pp.288-293
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• 2007

Thrombotic thrombocytopenic purpura(TTP) is a rare but life-threatening multi-system disorder characterized by the classic pentad of clinical features that includes fever, microangiopathic hemolytic anemia, thrombocytopenia, neurologic abnormalities and renal dysfunction. TTP has been rarely reported to simultaneously present with systemic lupus erythematosus (SLE). While it is important to distinguish between the two diseases of therapeutic implication, cases of concurrent TTP and SLE help to elucidate the pathophysiology that underlies each condition. We describe two adolescents with synchronous TTP and SLE, and review the literature.

• Childhood Kidney Diseases
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• v.14 no.2
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• pp.236-239
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• 2010

Typhoid fever is a systemic infectious disease which affects many organs. In children, few cases have been reported of acute nephritic syndrome in typhoid fever. We report an immunocompetent 9-year old girl with typhoid fever complicated by acute tubulointerstitial nephritis who presented with prolonged fever and acute renal failure.

• KSBB Journal
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• v.17 no.4
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• pp.345-349
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• 2002

The adsorption of the antimicrobial compounds(AMCs) and their heat-resistance were investigated for the packaging film manufacture, wherein, the antimicrobial compounds were adsorbed on a silica component. The naturally source antimicrobial compounds were produced by methylotropic actinomycetes strains MO-16 and MO-17, extracted with ethylacetate. Antimicrobial compounds adsorbed on water-soluble silica had retained activity against Gram(+) and the Gram(-) bacteria after heat treatment at 150$\^{C}$ for 5min. The benzoic acid showed strong antimicrobial activity to fungi and was stable to heat treatment. The combination of antimicrobial compound plus benzoic acid was synergistic against test strains. Therefore, we estimated that the water-soluble silica is suitable for the packaging film manufacture as a adsorbent of the antimicrobial compounds.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.2 no.2
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• pp.74-84
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• 2003

21세기 경제주역인 정보통신산업이 계속 성장하기 위해서는 원활한 전문인력 수급이 전제조건이 되어야하고, 2005년까지 정부가 추진하는 초고속 정보통신망 구축사업이 성과를 이루기 위해서도 정보통신전문인력의 확보가 우선시 되어야 할 것이다. 현재 인력수요가 공급보다 급속히 늘어나는 실정으로 인력부족은 갈수록 심화될 전망이며, 특히, 통신공사업은 현장, 노동집약적 산업특성으로 인하여 3D 업종으로 인식되고 있어 기술인력들의 현장 기피현상의 심화, 통신공사업 관련 기술분야에 대한 전문인력 양성기관의 부족 등으로 안정된 기술인력 확보에 더욱 어려움을 겪고 있으며, 그에 따른 공사품질저하의 악순환을 초래할 우려가 있다. 통신공사 관련 기술환경을 보면 기술의 고도화와 신기술의 도입이 빈번하고 그 적용기술이 다양할 뿐 아니라, 기술의 적용주기가 짧아 시장환경에 맞는 인력의 안정적 육성과 공급 및 기존인력들에 대한 신기술 재교육이 그 어느 산업보다도 절실하게 요구되고 있다. 본 논문에서는 정보통신산업의 발전에 따른 정보통신공사업의 현황과 전망을 분석하고 정보통신설비 시공전문인력의 수요현황을 토대로 정보통신설비 시공인력의 앙성방향 및 과정에 대해서 제시한다. 초고속 정보통신망의 조기구축과 시공품질향상을 위하여 기간통신망 구축에 소요되는 중급 이상의 다기능기술인력은 기능대학을 통하여 우수한 시공전문인력을 안정적으로 양성하고, 초고속인터넷 개통인력과 구내통신설비 설치인력은 단기적인 기능인력의 재교육을 통한 양성 방안을 강구할 필요가 있다.

• Childhood Kidney Diseases
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• v.7 no.2
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• pp.197-203
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• 2003

The Galloway-Mowat syndrome, a rare inherited disorder, is characterized by congenital microcephaly with various neurological abnormalities and early onset of nephrotic syndrome with unresponsiveness to treatment, progressive deterioration in renal function and death in early lifetime. In this report, we describe a girl with microcephaly, seizures. and psychomotor retardation who developed nephrotic syndrome at 17 months of age.

• Korean Journal of Clinical Laboratory Science
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• v.53 no.1
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• pp.32-40
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• 2021

This study examined the association between hypertension (HTN), estimated glomerular filtration rate (eGFR), and urine microalbumin/creatinine ratio (ACR) in Korean adults. Data for 8,922 adults (3,941 men and 4,981 women) aged ≥20 years from the Sixth Korean National Health and Nutrition Examination Survey VI (2013~2014) were analyzed. In men, after adjusting for the related variables, the odds ratios (ORs) of HTN [systolic blood pressure (SBP) ≥140 mmHg, diastolic blood pressure (DBP) ≥90 mmHg, or use of HTN medications] were significantly higher in the decreased eGFR group [eGFR <60 mL/min/1.73 ㎡, 1.98 (95% CI, 1.21~3.24)], elevated ACR group [ACR ≥30 mg/g, 2.03 (95% CI, 1.54~2.69)], and decreased eGFR plus elevated ACR group [eGFR <60 mL/min/1.73 ㎡ and ACR ≥30 mg/g, 6.03 (95% CI, 2.82~12.92)] than in the normal group (eGFR ≥60 mL/min/1.73 ㎡ and ACR <30 mg/g). In women, after adjusting for the related variables, the ORs of HTN were significantly higher in the decreased eGFR group (2.29, 95% CI, 1.27~4.13), elevated ACR group (2.22, 95% CI, 1.68~2.94), and decreased eGFR plus elevated ACR group (10.77, 95% CI, 3.89~29.82) than the normal group. In conclusion, HTN was associated with a decreased eGFR and elevated ACR in Korean men and women. In addition, the prevalence of HTN increased greatly when a decreased eGFR and elevated ACR occurred simultaneously.

• Clean Technology
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• v.9 no.4
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• pp.179-187
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• 2003

The technology of fluidized bed to use dry sorbent can be new technology that reduce the operating cost and make efficient operation. Therefore, this study investigated $CO_2$ control by dry sorbents with operating variables in a fluidized bed, compared with fixed bed for $CO_2$ adsorption capacity and pressure drop, and presented the $CO_2$ adsorption capacity of activated carbon, molecular sieve 5A, molecular sieve 13X, and activated alumina. As the results of this study, the basic data could be achieved for operation of fluidized bed process, and fluidized bed process presented relatively high $CO_2$ adsorption capacity and low pressure drop with the increase of gas velocity. In addition, molecular sieve 5A showed 1.1~3.0-fold later breakthrough point and 1.1~2.7-fold higher adsorption capacity than the other dry sorbents.