http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Bioactive Non-Woven Silica Fabric Made Through Electro-Spinning Method
Yoon, Hanna,Lee, Yong Keun,Lim, Bum Soon,Rhee, Sang Hoon Trans Tech Publications, Ltd. 2006 Key Engineering Materials Vol.309 No.-
<P>Non-woven silica fabric was made by electro-spinning method for the application as a bone grafting material. The silica gel, the source material for electro-spinning, was prepared by the hydrolysis of tetraethyl orthosilicate in the presence of water, hydrochloric acid and ethanol. It was transferred to a syringe (spinneret), which was connected to the high voltage supply generating a high electric field between the spinneret and the ground collecting drum. The silica fibers were spun under the electric field of 2 KV/cm. Their diameters were in the range from about 100 nm to 5 µm. After soaking in the SBF for 4 week, low crystalline apatite crystals were observed to occur partly on their surfaces. From the results, it can be concluded that the non-woven silica fabric made by electro-spinning method has the apatite forming ability in the SBF and it means it has a potential to be used as a bone grafting material because of its apatite-forming ability, high surface area to volume ratio and high porosity. </P>
Hanna Kim,Jieun Hwang,Chan Kim,Seung Hyun Kim,Misun Yang,So Yoon Ahn,Se In Sung,Yun Sil Chang 대한신생아학회 2024 Neonatal medicine Vol.31 No.2
Purpose: Hypothermia upon admission to the neonatal intensive care unit (NICU) contributes significantly to various neonatal complications, particularly in preterm infants. This study aimed to assess the impact of quality improvement (QI) interventions, including using plastic bags and head caps, and adjusting delivery room temperatures, on improving the admission body temperature and reducing hypothermia in infants born at less than 32 weeks or weighing 1,500 g. Methods: This study retrospectively analyzed the medical records of infants born at less than 32 weeks or weighing 1,500 g who admitted to the NICU at Samsung Medical Center from January 2022 to February 2024. The QI program that was initiated in April 2023 focused on managing admission temperatures using plastic bags and head caps, and maintaining delivery room temperatures at ≥25 °C. The admission temperature and short-term outcomes pre- and post-QI were compared. Results: In a study of 270 patients, implementing QI initiatives significantly raised the admission temperature from 36.2±0.5 to 36.4±0.4 °C (P<0.01), particularly impacting infants weighing ≥1,000 g, in whom mild hypothermia occurrences dropped from 76.3% to 43.9% (P<0.01). This improvement in temperature management significantly decreased both mild and severe hypothermia rates post-QI. Additionally, implementing all three initiatives was more effective than when two or fewer initiatives were implemented. Conclusion: Simple and cost-effective QI interventions can increase admission temperatures and decrease hypothermia in neonates. Further research is essential to explore the long-term outcomes and develop effective hypothermia management strategies in neonatal care.
Cho, Hanna,Jeon, Seun,Kim, Changsoo,Ye, Byoung Seok,Kim, Geon Ha,Noh, Young,Kim, Hee Jin,Yoon, Cindy W,Kim, Yeo Jin,Kim, Jung-Hyun,Park, Sang Eon,Kim, Sung Tae,Lee, Jong-Min,Kang, Sue J.,Suh, Mee Kyun Cambridge University Press 2015 INTERNATIONAL PSYCHOGERIATRICS - Vol.27 No.1
<B>ABSTRACT</B><B>Background:</B><P>Epidemiological studies have reported that higher education (HE) is associated with a reduced risk of incident Alzheimer's disease (AD). However, after the clinical onset of AD, patients with HE levels show more rapid cognitive decline than patients with lower education (LE) levels. Although education level and cognition have been linked, there have been few longitudinal studies investigating the relationship between education level and cortical decline in patients with AD. The aim of this study was to compare the topography of cortical atrophy longitudinally between AD patients with HE (HE-AD) and AD patients with LE (LE-AD).</P><B>Methods:</B><P>We prospectively recruited 36 patients with early-stage AD and 14 normal controls. The patients were classified into two groups according to educational level, 23 HE-AD (>9 years) and 13 LE-AD (≤9 years).</P><B>Results:</B><P>As AD progressed over the 5-year longitudinal follow-ups, the HE-AD showed a significant group-by-time interaction in the right dorsolateral frontal and precuneus, and the left parahippocampal regions compared to the LE-AD.</P><B>Conclusion:</B><P>Our study reveals that the preliminary longitudinal effect of HE accelerates cortical atrophy in AD patients over time, which underlines the importance of education level for predicting prognosis.</P>