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서울지역 일부 과체중 및 적절체중 학령기 아동의 신체계측, 체지방률, 혈액지표 및 영양소 섭취 상태의 비교 분석 연구
이정숙,이정윤,임현정,조미란,차성호,조여원 대한영양사협회 2003 대한영양사협회 학술지 Vol.9 No.4
This study was carried out to compare the characteristics of the over weight elementary school students with those of desirable-weight children. Anthropometric parameters such as height, weight, BMI body fat percentile, triceps skin fold thickness were measured. Dietary assessment and blood analysis were performed. The average ages of over weight children and desirable-weight children were 10.9f2.5 and 10.2±2.8 years, respectively. The means body fat percentile of over weight children and desirable-weight children were 27.5±3.7% and 20.2± 3.8%. respectively. Plasma levels of TG. total cholesterol, LDL cholesterol, and HDL cholesterol of over weight children and desirable-weight children were 179.3±30.0. 104.9f26.6, 52.3f6.7 and 178.3±84.l㎎/dl and those of desirable-weight children were 86.1±43.5, 183.7f16.5, 101.0f2.1 and 67.7±20.0㎎/dl respectively. Plasma TG levels of over weight children were significantly higher than those of desirable weight chddren. On the other hand plasma HDL-cholesterol levels of over weight children were significantly lower than those of desirable-weight children Plasma levels of GOT ,and GPT were in normal range in both group. However, GPT level of over weight children was &her than that of desirable weight children. Plasma levels of albumin, globulin and BUN were all in normal range and no differences were found in both groups. Hematologic data did not show any difference between two group except WBC, KBC and Hgb levels which were significantly higher in over weight group than those of desirable-weight children. DAY nutrients intake of over weight children and desirable-weight children were very similar and they were around the Korean KDA levels for each nutrients. However, the intake of calcium of both groups were little over 50% of KDA. The consumption of d e b fiber was very low and the cholesterol intake was very high shorn that the habitual meals of Korean school children were not well balanced.
( Sungho Shin ),( Youngmin Moon ),( Jaepil Lee ),( Seongmin Hong ),( Sungho Jeong ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-
The growth of worldwide stainless steel consumption over the past years has been steady. Therefore, recycling of stainless steels has been encouraged since stainless steel contains valuable raw materials like Cr, Ni, Mn and Mo and the production of stainless steel is costly. However, stainless steel has various types and grades depending on elemental compositions. For the recycling of stainless steel scraps, sorting the scraps by stainless steel type and grade is vital. Since stainless steel scraps have not much difference in color and composition ratio, they can be accurately sorted only by measuring their compositions. Laser-induced breakdown spectroscopy (LIBS) is an appropriate method for this purpose and has been considered as a promising technique for the rapid determination of compositions of scrap metals based on a chemical analysis. LIBS has various advantages such as fast multi-elemental and in-air analysis that enables a real time analysis in industrial environments. For the application of LIBS to an industrial system, however, it is necessary to reduce the effects of plasma fluctuation during LIBS measurement since LIBS signals are influenced by plasma property changes. In this work, we report the results of LIBS elemental analysis of similar stainless steel certified reference metals in variable focusing conditions which induced different evolution of plasma. Signal processing algorithm considering intensity ratio will be discussed to improve classification accuracy for an industrial recycling by reducing the effects of focusing condition changes.
Jeong, Jaehoon,Nam, Sungho,Kim, Joonhyeon,Woo, Sungho,Kim, Hwajeong,Kim, Youngkyoo American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.7
<P>We investigated the influence of nickel oxide (NiO) nanoparticles that are incorporated into the hole-collecting buffer layer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)] on the performance of polymer:fullerene solar cells. To understand the optimum composition of NiO nanoparticles, the composition of NiO nanoparticles was varied from 0 wt% to 23 wt%. Results showed that the optical transmittance was gradually decreased as the NiO content increased. However, the device performance (short circuit current density, fill factor, series resistance, power conversion efficiency) exhibited a two stage trend in a boundary of approximately 9 wt% NiO content. This trend was in good agreement with the trend of sheet resistance in the presence of slight discrepancy owing to the different charge transport geometry.</P>
정성호(Sungho Jeong),박종복(Jung-Bok Park),정문석(Mun-Seok Jeong) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Laser chemical vapor deposition (CVD) can be applied for the localized patterning of microstructures or growth of micro/nano structures. In this work, the fabrication of fine metallic and nonmetallic patterns with a characteristic dimension of below 10 um using laser CVD, metallic interconnects on glass substrate and carbon nanotube patterns on quartz substrate, is to be introduced. Also, the growth of single-walled and multiwalled carbon nanotubes by localized laser heating of multi-catalyst-layer substrates will be described.