• 패션비즈니스
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• 제21권4호
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• pp.127-143
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• 2017

In this study, we examine a variety of influences in the field of design and analysis about the value of visual tactile design. In hair design, through study on visual tactility, creative design inspiration in the field of hair design enables development of quality research. Research methods use Internet publications such as local and foreign data, analysis, and related research and book forms, such as network searches. library goes for consideration by a literature search. Contents of this study used review of the case and by visual tactility design, for this study, expressive characteristics by color, texture and form of hair design, from 2014-2017 trend shown in the last three years the expressions of visual tactility being used through the analysis of design by date of the case. Result of this study is, visual tactile design appearing in the areas of hair design, that are not of the rules that are active, abstract form, texture, described as a visual feel the promotion of effective, and light and high brightness is sweet tactile impression, high saturation was cold, dark color was hard and heavy, red system is warm and the blue system is cold sense. In general, design trend in hair for three years from 2014-2017, visual tactility in 2014 is a high saturation and unstructured also soft and bright colors. 2015 is on the overall shape, color, texture, hybrid design configuration is more. As of 2016, 2017 is curved and straight texture, appearance of the hybrid mix to maximize the visual tactility.

• 광물과산업
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• 제28권
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• pp.1-13
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• 2015

본 연구에서는 몽골에서 채취한 텅스텐으로 부터 고품위 텅스텐 정광을 생산 할 수 있는 선별공정 개발연구를 수행하였다. 선별비용 절감과 선별효율 향상을 위해 먼저 조립 산물에서 지그선별에 의해 정광산물을 회수한 다음, 단체분리도의 향상을 위해 재 분쇄 하였다. 이것을 가지고 shaking table을 적용하여 비중이 낮은 맥석광물들을 제거하였다. 이때 회수 된 중광물에는 텅스텐과 비중은 비슷하나, 비자성인 주석이 함께 수반되어 있어 이들의 제거를 위하여 건식 자력선별법을 적용하여 최종 텅스텐 정광을 회수하는 공정을 개발하였다. 본 연구에서 개발된 선별공정을 적용한 실험결과, 최적실험 조건에서 $WO_3$의 품위와 회수율이 각각 67.63%와 86.07%인 최종 정광을 얻었다.

• 선박안전
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• 통권25호
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• pp.47-63
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• 2008

저항성능 측면에서 한국 어선선형의 특성을 파악하기 위하여, 본 연구에서는 한국과 일본에서 건조되어진 대표적인 어선을 한 척씩 선정하여 두 어선의 선형적 특성을 비교하였다. 또한 한국 어선의 선형적 특성들, 즉 일부 대표적인 선형요소들과 이를 제외한 기타의 국부적 선형특성들을 일본어선의 선형을 참고로 보정함으로써 우리나라 어선들의 저항성능을 향상시킬 수 있는 방안에 대하여 연구하였다. 한국어선과 일본어선은 해양환경과 어업의 종류가 다를 뿐만 아니라 관습적인 이유 등으로 선형의 차이가 있게 되며, 이것은 한국 어선이 일본 어선에 비하여 같은 배수량을 가지더라도 배 길이가 짧은 반면 폭이 넓으며 흘수가 얕은 대표적인 선형요소들의 차이로 확인할 수 있다. 이러한 차이를 고려하여, 일본어선들에 대한 유효마력 추정프로그램을 한국어선들에 맞게 보정.개발하는 과정을 통하여 양국 어선의 저항성능 차이를 확인할 수 있었으며, 보정된 프로그램을 이용하여 연구대상의 한국어선에 대한 저항저감효과를 줄 수 있는 선형요소들을 도출함으로써 선형요소들의 변화에 따른 저항성능 효과를 확인할 수 있었다. 그러나 선형요소들의 보정에도 불구하고 한국어선의 저항성능은 여전히 일본어선의 그것보다 떨어짐을 확인하여, 본 연구에서는 대표적인 선형요소들뿐만 아니라 국부적 선형특성 즉, 선수부에서 차인선(chine line) 경사도, 용골의 형상, 선미길이(용골 끝에서 선미단까지의 거리)를 각각 보정해 봄으로써 보다 더 큰 저항성능의 개선효과를 확인하였다. 본 연구결과는 앞으로 저항성능이 우수하면서도 실용 가능한 개량된 한국 어선선형의 개발에 기초적인 자료로서 활용이 가능할 것으로 사료된다.

• Bulletin of the Korean Chemical Society
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• 제21권10호
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• pp.969-972
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• 2000

[Fe II Fe III $BPLNP(OAc)_2](BPh_4)_2$ (1), a new model for the reduced form of the purple acid phosphatases, has been synthesized by using a dinucleating ligand, 2,6-bis[((2-pyridylmethyl)(6-methyl-2-pyridylmethyl)ami-no)methyl]-4-nitrophenol (HBPLNP) . Complex 1 has been studied by electronic spectral, NMR, EPR, SQUID, and electrochemical methods. Complex 1 exhibits two strong bands at 498 nm $(\varepsilon=$ 2.6 ${\times}10^3M-^1cm-^1)$ and 1363 nm $(\varepsilon=$ 5.7 ${\times}10^2M-^1cm-^1)$ in $CH_3CN.$ These are assigned to phenolate-to-FeIII and intervalence charge-transfer transitions, respectively. NMR spectrum of complex 1 exhibits sharp isotropically shifted resonances, which number is half of those expected for a valence-trapped species, indicating that electron transfer between FeⅡ and FeⅢ centers is faster than NMR time scale at room temperature. Complex 1 undergoes quasireversible one-electron redox processes. The $FeIII_2/FeIIFeIII$ and $FeIIFeIII/FeII_2$ redox couples are at 0.807 and 0.167 V ver-sus SCE, respectively. It has Kcomp = 5.9 ${\times}$10 1s(acetato) ligand combination sta-bilizes a mixed-valence FeIIFeIII complex in the air. Interestingly, complex 1 exhibits intense EPR signals at g = 8.56, 5.45, 4.30 corresponding to mononuclear high-spin FeⅢ species, which suggest a very weak magnetic coupling between the iron centers. Magnetic susceptibility study shows that there is a very weak antiferromag-netic coupling (J = $-0.78cm-^1$, H = $-2JS_1${\times}$S_2)$ between FeII and FeIII centers. Thus, we can suggest that complex 1 has a very weak antiferromagnetic coupling between the iron centers due to the electronic effect of the nitro group in the bridging phenolate ligand.

• Animal Bioscience
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• 제35권2호
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• pp.247-259
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• 2022

Objective: This study was conducted to investigate the effects of age and diet forms on growth-development patterns, serum metabolism indicators, and parameters of body fat deposition in Cherry Valley ducks. Methods: According to the hatching age and initial weight, a total of 150 1-day-old male SM3 Cherry Valley ducks were randomly assigned to two diet forms (pellet vs powder form). Each treatment had with 5 replicates per treatment and 15 meat ducks per replicate. The study lasted 42 d, which was divided into two periods (1 to 21 vs 22 to 42 d). Results: Our results showed that compared with powder group, ducks in pellet group had greater growth performance during different period (p<0.05). The inflection point was 24 d and was not numerically affected by diet forms. Increasing age (42 vs 21 d) significantly increased the weight of body fat and hepatic fat metabolism related enzyme activities in ducks (p<0.05), meanwhile, increasing age (42 vs 21 d) improved serum metabolism indicators and decreased mRNA expression levels of fat metabolism-related genes in liver (p<0.05). Ducks fed different diets (pellet vs powder form) increased growth performance as well as the weight of body fat and improved serum metabolism indicators (p<0.05). In addition, interactions were found between age and diet forms on the levels of serum metabolism indicators in ducks (p<0.05). Conclusion: In conclusion, powder feed reduced growth performance of ducks, and the day of inflection point was 24 days old. Ducks with higher age or fed with pellet diet showed higher fat deposition. The effect of age and feed forms on body fat deposition might result from changes in the contents of serum metabolism indicators, key enzyme activity of lipid production, and hepatic gene expressions.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 춘계학술발표대회
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• pp.394-397
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• 2000

Styrene을 제거하기 위한 biofilter가 연구되었다. 운전 초기에 활성슬러지를 접종함으로써 start-up 기간을 24시간으로 줄일 수 있었다. 운전중 질소원 고갈 현상이 발생하였고 첨가된 ammonium sulfate양에 따라 제거된 styrene의 양을 정량적으로 구하여 이것을 biofilter의 장기운전에 이용할 수 있었다. Styrene의 maximum elimination $capacity(EC_{max})$와 critical elimination $capacity(EC_{cr})$는 각각 4.8kg $C\;/m^3{cdot}day$, 1.248kg $C\;/m^3{cdot}day$이었으며 styrene 농도 400ppmv까지를 분해하는데 EBRT 1min으로 제거율 95% 이상을 달성할 수 있었다.

• Journal of applied mathematics & informatics
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• 제27권1_2호
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• pp.49-58
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• 2009

For $1{\leq}k{\leq}r$, let ${\sigma}$($K_{r,r}$ - ke, n) be the smallest even integer such that every n-term graphic sequence ${\pi}$ = ($d_1$, $d_2$, ..., $d_n$) with term sum ${\sigma}({\pi})$ = $d_1$ + $d_2$ + ${\cdots}$ + $d_n\;{\geq}\;{\sigma}$($K_{r,r}$ - ke, n) has a realization G containing $K_{r,r}$ - ke as a subgraph, where $K_{r,r}$ - ke is the graph obtained from the $r\;{\times}\;r$ complete bipartite graph $K_{r,r}$ by deleting k edges which form a matching. In this paper, we determine ${\sigma}$($K_{r,r}$ - ke, n) for even $r\;({\geq}4)$ and $n{\geq}7r^2+{\frac{1}{2}}r-22$ and for odd r (${\geq}5$) and $n{\geq}7r^2+9r-26$.

• 대한기계학회논문집A
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• 제24권4호
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• pp.946-954
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• 2000

The purposes of the paper are to calculate stresses and strains of the disk with overcoating layer rotating quickly under normal loading and shear loading by contacting with head and to present material properties preventing the delamination between the disk and overcoating layer. The hard disk is modeled as two-layered disk composed with overcoating layer and the rest layers and the loading onto the disk is assumed axisymmetric. Solutions to equilibrium equations and compatibility equations are derived with the form of polynimial and Bessel function and coefficients satisfying boundary conditions are obtained differently for the case of body force, normal force and shear force. The risk of delamination are investigated for us to calculate the differences of strains at the interface between the disk and overcoating layer and the material properties preventing delamination are presented by calculating the differences of strains according to Young's modulus and density of disk.

• 소성∙가공
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• 제19권8호
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• pp.508-516
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• 2010

Thickening process in sheet metal forming is being increased to improve the strength as well as to reduce manufacturing process such as welding. This process can make it possible to obtain part locally thicker than that of initial sheet thickness. In this study, design method for manufacturing the component which has double sinks with local thickened wall is proposed. Deep drawing and upsetting processes are applied in order to form double sinks and thicken its walls. Used material is SPHC440 with the thickness of 2.0mm and initial blank size is determined on the basis of the final product. Distance between the center of double sinks and first drawing ratio to avoid fracture are the most significant factors during deep drawing. FE-analysis is implemented in order to determine the appropriate values. Progressive die is designed based on the proposed method and FE-analysis. As a result of experiment, locally thickened component can be manufactured, which has double sinks with the thickness about 3mm at the corner and wall.

• 대한물리의학회지
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• 제13권3호
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• pp.91-97
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• 2018

PURPOSE: Stroke patients have reduced balance ability due to a lack of motion in the ankle joint. Elastic taping assists movement, and joint mobilization, a form of passive movement, enhances mobility. The purpose of this study was to determine the immediate effects on balance ability after anterior-to-posterior (A-P) talocrural joint mobilization combined with elastic taping in stroke patients. METHODS: Twenty stroke patients were divided into two groups: a joint mobilization with taping group (experimental group, n=10) and an elastic taping only group (control group, n=10). The experimental group underwent anteroposterior mobilization of the talus and elastic tape was applied to the calf and tibialis anterior muscles. The control group had elastic tape applied. Dynamic balanced abilities were assessed by using the BioRescue system. After 30 minutes of intervention, the forward, backward, left side, and right side sway areas ($mm^2$) were measured. RESULTS: Only the experimental group showed a significant increase in forward sway area after intervention. However, no significant differences were detected between the two groups. CONCLUSION: This study shows that A-P talocrural joint mobilization combined with elastic taping has a positive effect, producing an immediate increase in the forward balance ability of stroke patients. However, this study did not examine joint mobilization alone. In subsequent studies, it is necessary to examine the effect of joint mobilization only on balance in stroke patients.