• Journal of Chest Surgery
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• v.34 no.1
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• pp.80-84
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• 2001

배경: 보상성 다한증은 다한증에서 흉강경하 교감신경수술후에 가장 많이 발생되는 합병증으로 환자의 만족도를 감소시킬 뿐 아니라 환자에게 또다른 부담을 주고 있다. 그러나 이러한 보상성 다한증에 대하여 현재까지 뚜렷한 치료법은 없는 실정이다. 이에 본 연구는 다한증 수술후 심한 보상성 다한증을 호소하는 환자들에게 20% Aluminum Chloride hexahydrate를 이용하여 발한감소효과를 관찰하고자 시행되었다. 대상 및 방법: 200년 5월부터 7월말까지 보상성 다한증으로 심한 불편을 호소하는 8명을 대상으로 약제의 효과를 관찰하였다. 보상성 다한증에 대하여는 1=없다(absent), 2=약간있다(mild), 3=눈에 보일정도의 발한이 있으나 생활에 불편은 없다(moderate). 4=일상생활에서 지장을 줄 정도롤 발한이 심하다(severe). 5=발한이 너무 심하여 일상생활이 불가능하다(disabling)로 구분하였다. 또한 보상성 다한증으로 인한 생활의 만족도는 1=Absolutely no satisfaction, 2=$\leq$25%, 3=<25-$\leq$50%, 4=<50-$\leq$75%, 5=<75-$\leq$100%로 구분하였다. 20% Aluminum Chloride Hexahydrate를 바르기전과후의 수치변화를 Wilcoxon signed rank test를 이용하여 비교 분석하였다. 결과: 보상성다한증으로 인한 발한의 정도는 치료전에 4.25$\pm$0.46에서 치료후에 2.88$\pm$0.64로 감소하였으며(p=0.009), 만족도는 치료전이 1.25$\pm$0.46였고 치료후의 만족도는 4.00$\pm$1.07로 만족도의 상승을 볼수있었다(p=0.011). 결론: 20% Aluminum Chloride Hexahydrate를 사용하여 증상완화와 생활의 만족도상승을 볼 수 있었다. 그러나 많은 수의 환자들을 대상으로 장기적인 연구가 좀더 필요하리라 사료된다.

• Journal of Korean Society of Environmental Engineers
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• v.22 no.3
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• pp.441-451
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• 2000

Sludge produced from water treatment plants contains plenty of aluminum due to addition of coagulants, polyaluminum chloride(PACI) which has been widely used in most of water treatment plants. however. the whole of PACI is imported from other countries. In this research. the effective methods for recycling PACI from sludge of water treatment plants were developed and evaluated. Aluminum chloride hexahydrate($AlCl_3{\cdot}6H_2O$) was obtained by sparging HCl gas aluminum extracted from sludge using hydrochloric acid (HCI). This aluminum chloride hexahydrate was solidified by decomposition at $180^{\circ}C$. and dissolved in water to produce PACI. The optimum extraction rate was obtained at the condition of 10 minutes of reaction time. $105^{\circ}C$ of reaction temperature. 27.65%(W/W) of HCI concentration. The KS experiment proved that manufactured aluminum chloride hexahydrate was 98.7% degree and the recycled PACI coagulants agreed with the KS standard. The optimum temperature of decomposition was $180^{\circ}C$ and the basicity of the PACI was decided upon the extent of decomposition The compared experiments between purchased coagulant and manufactured coagulant presented that both coagulants had same performance for turbidity, DOC, $UV_{254}$ absorbance. and chlorophyll-a.

• Journal of Electrical Engineering and Technology
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• v.8 no.1
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• pp.163-167
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• 2013

Aluminum doped zinc oxide (AZO) thin films have been prepared on the glass substrates (Corning 1737) by sol-gel dip-coating method employing zinc acetate and aluminum chloride hexahydrate for the transparent conducting oxide (TCO) applications. 1 at% Al was doped to the ZnO thin films. The effects of post-heating temperature on the crystallization, optical and electrical properties of the AZO films have been investigated. Experimental results showed that post-heating temperature affected the microstructure, electrical resistance, and optical transmittance of the AZO films. From the X-ray diffraction analysis, all films have hexagonal wurtzite crystal structure. Optical transmittance spectra of the AZO films exhibited transmittance higher than about 80% within the visible wavelength region and the optical direct band gap ($E_g$) of these films was increased with increasing post-heating temperature. A minimum resistivity of $2.5{\times}10^{-3}{\Omega}cm$ was observed at $650^{\circ}C$.

• Solar Energy
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• v.10 no.2
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• pp.38-43
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• 1990

The present study was to investigate the use of a phase change material for hydronic radiant floor heating. Two identical unit test cells sized $1.8m^L{\times}1.8m^W{\times}1.8m^H$ were built and installed with specially designed $1.6cm^T{\times}9cm^W{\times}80cm^H$ aluminum Ondol-panels holding 1.25kg of calcium chloride hexahydrate(CCH) each. It was found that the Ondol-panel with CCH reduced the room temperature fluctuations and maintains the phase changing temperature for considerably long duration, $2{\sim}4$ times of heating hour, over no-CCH one.

• Korean Journal of Materials Research
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• v.33 no.4
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• pp.130-134
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• 2023

This study evaluated cell viability and cytokine release in immortalized human oral fibroblasts (hTERT-hNOFs) and keratinocytes (IHOK) exposed to a dental-impregnated gingival retraction cord. To prepare the extracts, dental gingival retraction cords impregnated with aluminum chloride hexahydrate were immersed in a cell culture medium for 24 h at 37 ℃. hTERT-hNOFs and IHOK were cultured for 24 h. The cell culture medium was removed and extracts of the dental gingival retraction cords were added. After incubation with the extract solution, cell viability was evaluated using an MTT assay. The levels of the cytokines IL-1α and IL-8 were measured in the supernatants of each cell type. The cell viability after exposure to the extract solution for 10 min exceeded 70 % in both cell types. The ET50 values for hTERT-hNOF and IHOK were 35.75 and 28.98 min, respectively. For IHOK, the IL-1α level was (5.35 ± 5.22) pg/mL at 10 min, (3.58 ± 5.38) pg/mL at 20 min, and (2.85 ± 4.28) pg/mL at 60 min of exposure (p > 0.05). The IL-8 level in IHOK was (67.16 ± 18.70) pg/mL at 10 min, (78.36 ± 7.50) pg/mL at 20 min, and (111.9 ± 26.10) pg/mL at 60 min of exposure (p > 0.05). Cytokine release was not observed from hTERT-hNOFs. Based on these results, cell viability and cytokine release were confirmed in cells exposed to the impregnated gingival retraction cord. In addition, the application of the extracts to hTERT-hNOF and IHOK during the actual contact time and determination of ET50 may be beneficial for evaluating the biocompatibility of dental-impregnated gingival retraction cords.