목적 : 본 연구는 편마비성 뇌성마비 환아들의 편마비측 상지길이 단축의 정도를 평가하고, 길이 단축과 근경직도 및 운동기능과의 연관성을 알아보고자 하였다. 연구방법 : 30명의 편마비성 뇌성마비 환아(남아 13명, 여아 17명, 평균연령 6세 4개월)와 17명의 대조군(남아 9명, 여아 8명, 평균연령 6세 2개월)을 대상으로 하였다. 상지의 상완골,척골, 요골, 두 번째와 다섯 번째 중수골의 길이를 단순방사선 촬영을 통하여 길이 측정을 하였고, 건측(대조군에서는 우성측) 대비 편마비측(대조군에서는 비우성측)의 단축의 정도는 백분율로 나타내었다. 근경직도는 Modified Ashworth Scale (MAS)를 이용하였고, 상지의 운동기능은 Quality of Upper Extremity Skills Test (QUEST)를 사용하였다. 결과 : 대조군에 비하여 환자군에서는 편마비측 상지길이의 백분율이 의미있게 단축되어 있었다(p<.05). 이러한 상지길이의 단축 정도와 근경직도의 증가 및 운동기능의 저하는 의미있는 연관성을 보였다(p<.05). 결론 : 편마비성 뇌성마비 환아에서 보이는 편마비측 상지길이의 단축은 근경직 및 운동기능과 의미있게 연관되어 있다. 추후 이러한 환아들에게서 근경직도의 완화 및 운동기능의 향상을 도모하는 재활치료 후 변화되는 상지길이의 단축 정도를 연구한다면 재활치료의 효과를 좀더 객관적으로 증명하고, 치료의 방법과 정도를 정립하는데 도움이 될 것이다.

Li1+xAlxTi2-x(PO4)3(LATP) is a promising solid electrolyte for all-solid-state Li ion batteries. In this study, LATP isprepared through a sol-gel method using relatively the inexpensive reagents TiCl4. The thermal behavior, structuralcharacteristics, fractured surface morphology, ion conductivity, and activation energy of the LATP sintered bodies areinvestigated by TG-DTA, X-ray diffraction, FE-SEM, and by an impedance method. A gelation powder was calcined at 500oC.A single crystalline phase of the LiTi2(PO4)3(LTP) system was obtained at a calcination temperature above 650oC. The obtainedpowder was pelletized and sintered at 900oC and 1000oC. The LTP sintered at 900~1000oC for 6 h had a relatively low apparentdensity of 75~80%. The LATP(x=0.3) pellet sintered at 900oC for 6 h was denser than those sintered under other conditionsand showed the highest ion conductivity of 4.50×10−5S/cm at room temperature. However, the ion conductivity of LATP(x=0.3) sintered at 1000oC decreased to 1.81×10−5S/cm, leading to Li volatilization and abnormal grain growth. For LATPsintered at 900oC for 6 h, x=0.3 shows the lowest activation energy of 0.42eV in the temperature range of room temperatureto 300oC.

The production of functional activated carbon materials starting from inexpensive natural precursors using environmentally friendly and economically effective processes has attracted much attention in the areas of material science and technology. In particular, the use of plant biomass to produce functional carbonaceous materials has attracted a great deal of attention in various aspects. In this study the preparation of activated carbon has been attempted from rice husks via a chemical activation-assisted microwave system. The rice husks were milled via attrition milling with aluminum balls, and then carbonized under purified N2. The operational parameters including the activation agents, chemical impregnation weight ratio of the calcined rice husk to KOH (1:1, 1:2 and 1:4), microwave power heating within irradiation time (3-5 min), and the second activation process on the adsorption capability were investigated. Experimental results were investigated using XRD, FT-IR, and SEM. It was found that the BET surface area of activated carbons irrespective of the activation agent resulted in surface area. The activated carbons prepared by microwave heating with an activation process have higher surface area and larger average pore size than those prepared by activation without microwave heating when the ratio with KOH solution was the same. The activation time using microwave heating and the chemical impregnation ratio with KOH solution were varied to determine the optimal method for obtaining high surface area activated carbon (1505 m2/g).