• 한국의류학회지
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• 제32권5호
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• pp.846-858
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• 2008

This study was designed to propose a method to draft bodice block pattern from 3D body scan data. Subjects were ten elderly women in their 60's, who wear basic size(B: 94cm, W: 82cm) garment. Scanning was done using 3D whole body scanner(WB4, Cyberware). Measurements for 3D data and cross section were attained using Auto CAD, by which a upper bodice pattern for elderly women was drawn on the basis of short measured method. The results are as following: As for most items, no significant differences were shown between measurements from Martin's anthropometry and those from 3D scan data, suggesting measurement from 3D scan data could be used to draft a pattern. The drafting equations acquired were as follows; width of pattern=B/2+5.5, width of waist=W/2+3.5cm, dart amount=8cm. Dart distributions were 23%(B.P.) : 20%(front armpit) : 17%(side seam) : 18%(back armpit) : 15%(back protruded point) : 7% (center back line). Through wearing test using 5-point Likert scale, resultant pattern was evaluated as appropriate for elderly women's pattern to get over 4 point. As a result, it might be said that 3D scanning application is effective for elderly women in that it doesn't take time so much as Martin's anthropometry and that their body shape vary compared with those of young women.

• 대한임상검사과학회지
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• 제36권2호
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• pp.121-126
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• 2004

The primary goal of six sigma is to improve patient satisfaction, and thereby profitability, by reducing and eliminating defects. Defects may be related to any aspect of customer satisfaction: high product quality, schedule adherence, cost minimization, process capability indices, defects per unit, and yield. Many six sigma metrics can be mathematically related to the others. Literally, six means six standard deviations from the mean or median value. As applied to quality metrics, the term indicates that failures are at least six standard deviations from the mean or norm. This would mean about 3.4 failures per million opportunities for failure. The objective of six sigma quality is to reduce process output variation so that on a long term basis, which is the customer's aggregate experience with our process over time, this will result in no more than 3.4 defect Parts Per Million(PPM) opportunities (or 3.4 Defects Per Million Opportunities. For a process with only one specification limit (upper or lower), this results in six process standard deviations between the mean of the process and the customer's specification limit (hence, 6 Sigma). The results of applicative six sigma experiment studied on 18 items TP, ALB, T.B, ALP, AST, ALT, CL, CK, LD, K, Na, CRE, BUN, T.C, GLU, AML, CA tests in clinical chemistry were follows. Assessment of process performance fits within six sigma tolerance limits were TP, ALB, T.B, ALP, AST, ALT, CL, CK, LD, K, Na, CRE, BUN, T.C, GLU, AML, CA with 72.2%, items that fit within five sigma limits were total bilirubin, chloride and sodium were 3 sigma. We were sure that the goal of six sigma would reduce test variation in the process.

• 대한두경부종양학회지
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• 제19권2호
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• pp.133-136
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• 2003

Background and Objectives: Kikuchi's disease or subacute necrotizing lymphadenitis is a cause of persistently enlarged lymph nodes unresponsive to antibiotic therapy. It affects predominantly young women under the age of 30, and it is seen primarily in the Asian population. Although this disease usually follows a benign course, all describing a clinical entity that has been mistaken for malignant lymphoma, lupus, and an assortment of infectious diseases. The purpose of this study is to report clinical characteristics and treatment outcome in order to contribute to the precise diagnosis and treatment. Materials and Methods: We reviewed 27 cases, who were diagnosed as subacute necrotizing lymphadenitis on excisional biopsy during the past 5 years from January 1998 to December 2002. Results: It occurred more often in females (20 cases ; 74%) than males (7cases ; 26%), and it was seen more frequently in the second and third decades (21 cases ; 78%). Cervical lymphadenopathy were usually multiple (24 cases, 89%) and measured less than 2cm (20 cases, 74%). The posterior cervical and deep jugular chains are the most common location(34 cases ; 81%). Leukopenia(18 cases, 67%) and elevated ESR(20 cases, 75%) were commonly noted in laboratory data. Conclusions: It is easy that Kikuchi's disease is mistaken for malignant lymphoma. So we should consider fine needle aspiration or open biosy of lymph node for histologic diagnosis in patients who have localized cervical lymphadenopathy unresponsive to antibiotic therapy.

• Journal of Nutrition and Health
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• 제41권8호
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• pp.711-717
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• 2008

본 연구는 식물의 대표적인 색소 성분인 anthocyanin계 색소 중 cyanidin이 인체 유방암 세포 MDA-MB-231에서 세포의 이동성과 침윤성에 미치는 영향을 알아보고자 실시 되었다. 실험 결과 cyanidin의 첨가량이 증가할수록 세포의 운동성, 이동성, 침윤성이 유의적으로 억제되었다. 그러나 ECM 분해 시 암세포에서 분비되는 단백질 분해 효소인 MMP-2, MMP-9의 활성과 MMP-9의 mRNA 수준은 cyanidin에 의해 영향 받지 않는 것으로 관찰되었다. 결론적으로, cyanidin은 세포 증식에 영향을 미치지 않는 범위 내에서 암세포의 전이과정 중 이동성과 침윤성을 억제할 수 있다는 가능성이 관찰되었으나, MMPs 활성에는 영향을 미치지 않는 것으로 보아 MMPs 이외의 경로를 통해 전이 과정이 이루어지는 것으로 사료된다.

• 한국수소및신에너지학회논문집
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• 제19권5호
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• pp.386-393
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• 2008

The Sulfur-iodine(SI) thermochemical cycle is one of the most promising methods for massive hydrogen production. For the purpose of continuous operation of SI cycle, phase separation characteristics into two liquid phases ($H_2SO_4$-rich phase and $HI_x$-rich phase) were directly investigated via Bunsen reaction. The experiments for Bunsen reaction were carried out in the temperature range, from 298 to 333 K, and in the $I_2/H_2O$ molar ratio of $0.109{\sim}0.297$ under a continuous flow of $SO_2$ gas. As the results, solubility of $SO_2$, decreased with increasing the temperature, had considerable influence on the global composition in the Bunsen reaction system. The amounts of impurity in each phase(HI and $I_2$ in $H_2SO_4$-rich phase and $H_2SO_4$ in $HI_x$-rich phase) were decreased with increasing $H_2SO_4$ molar ratio and temperature. To control the amounts of impurity in $HI_x$-rich phase, temperature is a factor more important than $I_2/H2_O$ molar ratio. On the other hand, the affinity between $HI_x$ and $H_2O$ was increased with increasing $I_2/H2_O$molar ratio.

• 한국수소및신에너지학회논문집
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• 제19권5호
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• pp.394-402
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• 2008

The Effects of Cu or Ni additives co-added with Ce/Zr mixed oxides to Fe-based oxide mediums were investigated for the purpose of the replacement of Rh, a precious metal additive, in terms of hydrogen storage(reduction by hydrogen) and release(water splitting). From the results of temperature programmed reduction(TPR), initial reduction rate of iron oxide in the mediums was greatly increased with the addition of Cu, similar to that of Rh. For isothermal redox reaction of 10 cycles, the total amounts of hydrogen evolved in water splitting steps for the mediums added with Cu or Ni were highly maintained at ca. 7 mmol/g-material, even though the oxidation rates were slightly lower than that for the medium added with Rh. This result suggests that the replacement of Rh to Cu or Ni is possible as a co-additive for Fe-based oxide mediums.

• 한국수소및신에너지학회논문집
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• 제19권4호
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• pp.305-312
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• 2008

ZnO/Zn redox cycle is the one of the promising thermochemical cycles for hydrogen production via water splitting with high temperature heat source like a concentrated solar energy. This paper reports the particle size effect of Zinc on water splitting behavior. Water splitting reaction experiments were carried out at isothermal conditions of 350 and 400$^{\circ}C$ in TGA (Thermo Gravimetric Analyzer) using four commercial Zinc powders (nano, <10 ${\mu}m$, <150 ${\mu}m$ and $150{\sim}600\;{\mu}m$ particle sizes). Before the experiments, average particle size of Zinc powders was analyzed by PSA (Particle Size Analysis). After the experiments, XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscope) analyses were conducted on the samples. The experimental results showed that particle size had a effect on the conversion of Zinc to ZnO. Zinc conversion was increased, as the particle size decreased. Especially, the nano size particles were aggregated and the particle's morphology changed on the surface during hydrolysis reaction.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.61-63
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• 2005

Pentacene based OTFT on PC and PES plastic substrates have been fabricated in a scale of 5 inches. We could get a small OTFT device enough to be applicable for AMOLED by acquiring the at least misalignment margin through a contact aligner. And also we could find out the degradation of device parameter through the integration processes and improve the properties by using a buffer layer as an etch stopper in an active patterning. Through these, the mobility of device is more than about $0.2cm^2/Vs$ and $I_{on}/I_{off}$ is higher than $10^5$.

• Korean Chemical Engineering Research
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• 제55권1호
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• pp.7-12
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• 2017

황산에 의한 바이오매스의 당화 후 황산의 회수는 매우 중요하다. 본 연구에서는 전기투석 방법에 의해 황산과 글루코스 혼합용액으로부터 황산을 분리하는 연구를 하였다. 전기투석은 음이온막과 양이온막을 사용한 3실 방식이 일반적인데 본 연구에서는 음이온막 만을 사용한 2실 방식을 실험했다. 글루코스 10~30% 황산농도 1~3 M 농도 범위의 용액에서 2실 방식의 전기투석으로 황산을 완전 분리할 수 있었다. 실험한 3종류의 음이온 막 중에서 확산과 대류의 영향이 작은 음이온 막에서는 전류밀도에 비례해 황산분리 속도가 증가하였다. 전기를 가하지 않고 확산과 대류에 의해 황산분리 45%를 달성할 수 있었다.

• 한국전기전자재료학회논문지
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• 제24권2호
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• pp.121-125
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• 2011

Ribbon silicon solar cells have been investigated because they can be produced with a lower material cost. However, it is very difficult to get good texturing with a conventional acid solution. To achieve high efficiency should be minimized for the reflectance properties. In this paper, acid vapor texturing and anti-reflection coating of $SiN_x$ was applied for EFG Ribbon Si Wafer. P-type ribbon silicon wafer had a thickness of 200 ${\mu}m$ and a resistivity of 3 $\Omega-cm$. Ribbon silicon wafers were exposed in an acid vapor. Acid vapor texturing was made by reaction between the silicon and the mixed solution of HF : $HNO_3$. After acid vapor texturing process, nanostructure of less than size of 1 ${\mu}m$ was formed and surface reflectance of 6.44% was achieved. Reflectance was decreased to 2.37% with anti-reflection coating of $SiN_x$.