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Health-Related Quality of Life of Post-Stroke Patients in a Public Hospital
Jang Mijung,Park Heedong,Kim Miyoung,Kang Galam,Shin Hayan,Shin Donghyun,Kim KyooSang 대한뇌신경재활학회 2024 뇌신경재활 Vol.17 No.1
This study aimed to identif y the correlation between influencing factors of activities of daily living (ADLs), mental health, and health-related quality of life (HRQoL) among post-stroke patients who enrolled in a transitional care ser vice in a public hospital. This cross-sectional study involved 67 stroke patients who were enrolled in a transitional care ser vice and visited the outpatient clinic at a public hospital in Seoul between March and December 2022. Their general characteristics, ADLs, mental health, and HRQoL were assessed. The data were analyzed using independent samples t-tests, analysis of variance, and Pearson correlation analysis, and the influencing factors were analyzed using regression analysis. HRQoL showed a statistically significant difference between patients living in different types of arrangements (t = 2.50, p = 0.015), and patients scores on the modified Rankin Scale (t = 7.08, p < 0.001). HRQoL was also significantly correlated with ADLs and mental health in stroke patients (r = −0.59, p < 0.001; r = −0.41, p < 0.001, respectively). Meanwhile, stroke severity (β = −0.30, p = 0.002), living arrangements (β = −0.30, p = 0.009) and ADLs (β = −0.45, p < 0.001) were found to influence HRQoL (F = 6.87, p < 0.001, R2 = 0.47). Reduced dependence for ADLs, improvements in symptoms consequent to stroke, and support related to living arrangements contributed to improved HRQoL and inter ventions for post-stroke patients in the transitional care ser vice of a public hospital
Nanosize Particles of ZrVFe Alloy by Pulsed Laser Ablation in Ethanol
Kil, Daesup,Suh, Yongjae,Jang, Heedong,Lee, Jaechen,Song, Changbin,Kim, Wonbaek The Japan Institute of Metals 2005 Materials transactions Vol.46 No.11
<P>Nanosize powder of ZrVFe alloy has been prepared by a laser ablation method using a ZrVFe alloy as a target material. Ablation of the target alloy was carried out in a liquid container. The laser fluence, energy density at the target surface, was adjusted by manipulating the laser power and focus size to control the ablating conditions. The obtained colloidal dispersions of the nanoparticle were filtered and dried for characterization. The crystal structure of prepared nanoparticles maintained clear crystallinity and was the same as that of the original target alloy by comparison of the X-ray diffraction pattern. The particle sizes were distributed at around 100 nm depending on the used ablation conditions. The minimum average particle size of 71 nm was obtained at the laser fluence of 20.3 J/cm<SUP>2</SUP>, while the average size was not proportional to the laser fluence. The morphologies and oxidation state of the particle have been discussed for possible use of the ZrVFe powder as a getter material.</P>
Performance of Double GEM and Triple GEM
Sanghyo Han,Do-Hyung Kim,Heedong Kang,Hyosung Cho,Jang-Min Han,Kyoungkeun Jeong,Sangmook Kang,Tae-Hoon Lee,Yongkyun Kim,Yong-Sub Cho,Young-Jun Kim 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.5
The operation of a double GEM and a triple gas electron multiplier (GEM) was examined in several gas mixtures, including Ar/Isobutane, Ar/CO2, and Ar/N2. In the double GEM and the triple GEM detectors, large gains of about 5 104 and 6 105, respectively, were obtained for the Ar/Isobutane mixture. The optimum value of the transfer eld and the dependence of the collection current on the drift, transfer, and collection field strengths for the GEM voltage sharing in the double GEM are discussed. A lower operation voltage and gain limit are also reported for the case of a triple GEM.
Microbial production of ultrafine-grained magnetite by fermentation processes at room temperature.
Roh, Yul,Kim, Yumi,Lee, Sanghoon,Jang, Heedong,Suh, Yongjae American Scientific Publishers 2008 Journal of Nanoscience and Nanotechnology Vol.8 No.10
<P>A method of producing magnetite nanoparticles was developed through culturing a microorganism designated Haejae-1, Shewanella sp., in the presence of glucose and akaganeite (beta-FeOOH). Haejae-1 isolated from inter-tidal flat sediments was able to produce copious amount of ultrafine magnetite via glucose fermentation extracellularly under anaerobic conditions at room temperature, allowing for easy production, separation, and recovery of the magnetite. TEM observation revealed aggregates of small crystals of ultrafine magnetite which ranged in size from about 2 to 4 nanometers. Magnetic property by SQUID analysis showed the magnetite nanoparticles demonstrate superparamagnetic behavior. As a result, the method of the present study can be used to produce magnetite efficiently using inexpensive means at room temperature. The magnetite is a mineral of a great commercial value in that it is useful, e.g., in magnetic recording devices, drug carriers, and as toner for plain paper copiers.</P>
Laser Ablation법에 의한 ZrVFe 합금 나노분말 제조
길대섭,서용재,장희동,이재천,송창빈,김원백,Kil Daesup,Suh Yongjae,Jang Heedong,Lee Jaechen,Song Changbin,Kim Wonbaek 한국재료학회 2005 한국재료학회지 Vol.15 No.4
Nano-sized ZrVFe alloy powders were prepared by the ablation of powder compact in alcobol using a Nd-YAG pulsed Laser. The $Zr_{57}V_{35.}8Fe_{7.2}$ alloy commercially designated as ST707 has long been known as the ideal solution for various vacuum applications. The target for the ablation was sintered pellets of $Zr_{57}V_{35.}8Fe_{7.2}$ alloy powder. The alloy was prepared by arc melting and Hydride-DeHydride method. The ablated powders were mostly circular having fairly large size distribution smaller than 200 nm in all cases. The X-ray diffraction study revealed that the ablated alloy retained the crystal structure of the target alloy. Nevertheless, Fe and V contents in the ablated powder were lower than those in the target alloy. This was believed to result from the high vapour pressures of Fe and V compared to that of Zr. The size of the powders ablated at high energy fluence tends to decrease due at least partly to the breakdown of previously made ones.