• 대한지리학회:학술대회논문집
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• 대한지리학회 2006년도 연례 학술대회
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• pp.128-129
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• 2006

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2009년도 제41차 학술발표회
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• pp.101-102
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• 2009

• 월간포장계
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• 통권350호
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• pp.67-71
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• 2022

• 한국물환경학회지
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• 제33권4호
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• pp.487-493
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• 2017

This study was conducted to propose measures of water quality management as the water criteria for waterscape facilities which have been highlighted as alternatives to wading pools in summer season was legislated. The number of public waterscape facilities has reached 290 sites in Gyeounggi province and 971 sites in South Korea in 2017. The water tank capacity of 80.3 % public waterscape facilities was less than $100m^3$. Facilities with disinfection system were only 6.5 % and facilities with filtration function were also very low at 6.9 %. Most of the waterscape facilities, about 93%, are expected to be vulnerable to complying with revised water quality criteria because they have to be disinfected by handling. Chlorine disinfectants, which are more persistent than ozone or ultraviolet sterilization methods, are more preferred. However, care should be taken when adding disinfectans because hypochlorous acid, which is an effective component of chlorine disinfectant, remains after the disinfection, but it is easily decomposed with time. For this study, ${\bigcirc}{\bigcirc}$ park floor fountain with a capacity of $63m^3$ was selected and the amount of free residual chlorine concentration was measured by injecting a certain amount of chlorine bleach. As a result, it took 5 hours to decrease from the water quality standard of 4 mg/L to 0.04 mg/L. If the waterscape facility is operated for 7 to 8 hours, the chlorine bleach should be re-injected after 5 hours. In addition, the problem of pH increase due to the input of chlorine disinfectant is expected, and the neutralization method using vinegar was proposed.

• Bulletin of the Korean Chemical Society
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• 제31권12호
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• pp.3771-3776
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• 2010

The dynamics of the $CN^-$-ligated ferric cytochrome c (CytcCN) in $D_2O$ at 283 K following Q-band photoexcitation at 575 nm was observed using femtosecond time-resolved vibrational spectroscopy. The equilibrium vibrational spectrum of the CN stretching mode of CytcCN shows two overlapping bands: one main band (82%) at $2122\;cm^{-1}$ with $23\;cm^{-1}$ full width at half maximum (fwhm) and the other band (18%) at $2116\;cm^{-1}$ with $7\;cm^{-1}$ fwhm. The time-resolved spectra show bleaching of the CN fundamental mode of CytcCN and two absorption features at lower energies. The bleach signal and both absorption features are all formed within the time resolution of the experiment (< 200 fs) and decay with a life time of 1.9 ps. One transient absorption feature, appearing immediately red to the bleach signal, results from the thermal excitation of low-frequency modes of the heme that anharmonically couple to the CN fundamental mode, thereby shifting the CN mode to lower energies. The shift of the CN mode decays with a lifetime of 2 ps, equivalent to the time scale for vibrational cooling of the low-frequency heme modes. The other transient absorption feature, which is 3.3 times weaker than the bleach signal and shifted $27\;cm^{-1}$ toward lower energies, is attributed to the CN mode in an electronically excited state where the CN bond is weakened with a lowered extinction coefficient. These observations suggest that photoexcited CytcCN mainly undergoes ultrafast radiationless relaxation, causing photo-deligation of $CN^-$ from CytcCN highly inefficient. As also observed in $CN^-$-ligated myoglobin, inefficient ligand photodissociation might be a general property of $CN^-$-ligated ferric hemes.

• 산업융합연구
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• 제19권3호
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• pp.91-96
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• 2021

이상적 외모 표현을 위해 남녀노소 누구나 외모 관리에 과감한 투자를 하며 특히 헤어컬러링과 아이롱을 이용한 헤어스타일링은 더욱 광범위하게 보편화되면서 사용되지만, 미용 시술로 인한 모발 손상과 퇴색은 불가피하기 때문에 이를 최소화할 필요가 있다. 이에 효율적 플랫 아이롱 사용법을 제시할 목적으로 120℃ 열처리에서의 버진 헤어와 블리치 헤어 열분석 변화연구를 하고자 한다. 연구 결과 플랫 아이롱의 모든 시술 온도에서 버진 헤어보다 블리치 헤어의 중량이 전반적으로 많이 감소하는 것으로 나타났다. 버진 헤어와 블리치 헤어의 온도 상승에 따른 무게 변화를 측정한 본 열 분석 연구를 통해 물리적 마찰을 받은 모발에서 색상 유지와 함께 모발 손상 및 퇴색을 최소화할 수 있는 최적 온도의 플랫 아이롱 시술 정보를 미용 소비자에게 효율적으로 제공할 것으로 사료된다.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2007년도 추계학술발표회
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• pp.49-50
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• 2007

• The International Journal of Costume Culture
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• 제7권2호
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• pp.151-157
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• 2004

This research is to conservate the old hat and restore its shape and place it on a supportive form in a stable protective container. The hat is a homemade construction, utilizing three different machine made laces, and two cotton net fabrics. The exterior, particularly the top crown piece, as well as the lace along the brim's edge has been generally soiled and discolored. Inside the crown, the cotton net has broken threads, and thread loss in several areas. The paper covering the two wires is very weak, and has discolored the lace in the areas of contact. The plastic buckles of the velvet ribbon have also discolored the areas where there is contact. The wash/bleach bath procedure was very effective. Virtually all of the light brown surface discoloration stains were removed. The darker brown spots, particularly concentrated around the two paper covered wires and assumed to be rust, were $90\%$ removed by the treatment. The brown spots apparently were due to the degradation of the paper covering, and not caused by the wire itself. The buckram foundation lost about $50\%$ of its stiffness, but this was not a major concern due to the fact that this hat should remain it its mount, which has been designed to serve for both storage and exhibition purposes.

• Archives of Plastic Surgery
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• 제35권6호
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• pp.748-750
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• 2008

Purpose: Chemical burn accounts for a small proportion of burns in burn patient population. However, chemical injuries own importance to their deep tissue destruction which continues long after the initial exposure. $YUHANROX^{(R)}$ is a domestic bleach which has been widely used in Korea. Chemical burn by the domestic bleach is an unusual case. Methods: A 70 yrs old female soiled with stool, her husband wiped the mess with $YUHANROX^{(R)}$. Skin edema, erythematous lesion was developed the second day, and she was admitted to our hospital via emergency department. Results: Complete epithelization was done after 3 times STSG but, severe scar was formed. Conclusion: We report this case to warn about the dangers of domestic bleaches chemical substances and to emphasize that they should be used with caution. Public relation of the primary care of the chemical burn injury is needed.

• 한국의류학회지
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• 제28권3_4호
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• pp.422-432
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• 2004

This study investigated underwear consumption behavior of women, who were 20∼59 years old and resided in Incheon during 2002 summer. 372 women completed questionnaires, and data were analyzed using factor analyses, t-test, ANOVA, $\chi$$^2$-analyses. They usually purchased underwear considering comfort and economic factor at a discount store. They wore sleeveless T-shirts, but they didn't wear underpants except panties highly all the year round. Higher rate of them wore pantyhose instead of underpants during autumn, winter and spring. They demanded unstitching of stitches and lengthened sleeves in most of the groups. And older and lowly educated women group wanted widen armhole of upper underwear, and tighten waistband of panties. They generally washed in washing machine using cold water. Besides they added oxygen bleach and softner during wash and final rinse. Older than 20's boil their underwear frequently. The women in a group of boiling commonly answered the looseness of waistband. It is recommended not to boil but to soak with bleach added warm water for improving the whiteness and durability of underwear. For a treatment with higher temperature deprives the elasticity of spandex.