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이광수와 나쓰메 소세키의 문학교육론이 지닌 근대성 비교연구
권혁건(Kwon,Hyuk-Gun),이호규(Lee,Ho-Gyoo),김주현(Kim,Ju-Hyun) 동북아시아문화학회 2011 동북아 문화연구 Vol.1 No.28
Soseki is representative novelist and theorists of Japanese modern literature, and Lee Gwangsoo (Lee) is known as person who opened doors to Korean modern literature. They are representing not only Korean and Japanese modern literature, but also Oriental modern literature. We focused on the early stages of their literary theories. As well, looked into their arguments based on their ideas of literary education in relation between literature and society. Although Soseki and Lee are both representatives of Korean and Japanese modern literature, we have found their literary theories to have contrasts, as well as undertoned ideal substance. Their findings show identical recognition in defining the workings of human mind as intellect, emotion and volition. Also, their thoughts on the realm of emotion is the characteristic of literature, and explained modern literature by drawing the concepts of rationality and truth. Soseki insisted literary art is not a simple skill; a literary artist could influence others due to their ideals that a literary artist is someone who has the biggest and highest ideals. Lee’s argument resembles Soseki’s argument. Lee contended literary art can be made simply with skill and endeavor. Only highly gifted artist can take charge of a growing self-regulating person who could lead society through literature. Soseki and Lee both, therefore, conclude the Occidental natural science (in other words, education that is logical and substantiate) is modern education, and upcoming Oriental new education need to take after. We found Soseki and Lee have contended education through literature that could produce self-regulating and liberal individuals based on the mentioned Occidental new education.
교통사고로 내원한 접형척추(butterfly vertebra) 환자 1예 보고
염석란,이근,박철완,양혁준,현성열,류일,진욱 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3
A butterfly vertebra is a rare, but very important congenital anomaly that must be differentially diagnosed with compression fracture of the vertebral body. It has characteristic findings on simple X-ray, CT, and MRI. These findings are an anterior wedging contour on the sagittal image, a widening of the transverse diameter on the coronal image, adaptations of nearby vertebral endplates on the sagittal image, communicated intervertebral disc spaces on the sagittal and the coronal images, a well-defied midline bony defect with a sclerotic margin in the vertebral body on the axial image, and a normal body signal intensity on MRI. Because of legal problems and further plans for treatment, close attention must be given to patients who complain of back pain and who have decreased anterior height of the vertebral body after trauma. In those patients, a butterfly vertebra must be differentially diagnosed with compression fracture of vertebral body. We report one such case here.
흉골골절이 의심되는 외상환자에서 초음파의 진단적 효용성
염석란,김재광,이근,박철완,양혁준,현성열,임용수,진욱 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3
Purpose: This study compared the value of ultrasonography(US) in the diagnosis of sternal fractures with those of conventional radiography and bone scan. Material and Method: From March 2000 to March 2001, in Gil Medical Center, Gachon Medical College, 44 patients(22 women and 22 men, mean age 46 years, range 5∼81 years) complained of tenderness in the sternal area. The cases histories of these patients with clinically suspected sternal fracture due to blunt trauma were prospectively studied. At the time of admission, conventional radiography(sternal view) was done. At one day after admission, sternal ultrasonography was obtained, and after 4∼5 days, a bone scan was done. Sternal ultrasonographic findings, conventional radiographic findings, and bone-scan findings were compared. In addition, a 12-lead ECG was done. When it was necessary, cardiac enzyme was checked and echocardiography was performed. Result: In 21 of 44 patients(48%), a sternal fracture was found by sternal US. Only 9 of 21 patients (43%) were diagnosed as having a sternal fracture by using conventional radiography. 23 of 44 patients (52%) have negative findings on sternal US; they also had negative findings on conventional radiography. Except for 7 unchecked patients, 13 of 21 patients(62%) were diagnosed as having a sternal fracture by bone scan, and among the 23 patients who had negative findings on sternal US, the 19 patients checked with a bone scan also had negative findings. Conclusion: Sternal US can find sternal fractures that are difficult to find on conventional radiography. Compared with bone scan, sternal US takes a shorter time and sternal US is not difficult. Additionally, combined lesions with sternal fractures(peristernal hematoma, soft tissue swelling) and costar cartilage fractures are diagnosed more easily when using sternal US.
Dendrite-Free Lithium Deposition for Lithium Metal Anodes with Interconnected Microsphere Protection
Lee, Yong-Gun,Ryu, Saebom,Sugimoto, Toshinori,Yu, Taehwan,Chang, Won-seok,Yang, Yooseong,Jung, Changhoon,Woo, Jaesung,Kang, Sung Gyu,Han, Heung Nam,Doo, Seok-Gwang,Hwang, Yunil,Chang, Hyuk,Lee, Jae-My American Chemical Society 2017 Chemistry of materials Vol.29 No.14
<P>A lithium (Li) metal anode is required to achieve a high-energy-density battery, but because of an undesirable growth of Li dendrites, it still has safety and cyclability issues. In this study, we have developed a microsphere-protected (MSP) Li metal anode to suppress the growth of Li dendrites. Microspheres could guide Li ions to selective areas and pressurize dendrites during their growth. Interconnections between microspheres improved the pressurization. By using an MSP Li metal anode in a 200 mAh pouch-type Li/NCA full cell at 4.2 V, dendrite-free Li deposits with a density of 0.4 g/cm(3), which is 3 times greater than that in the case of bare Li metal, were obtained after charging at 2.9 mAh/cm(2). The MSP Li metal enhanced the cyclability to 190 cycles with a criterion of 90% capacity retention of the initial discharge capacity at a current density of 1.45 mA/cm(2).</P>
Lee, Jong-Gun,Joshi, Bhavana N.,Lee, Jong-Hyuk,Kim, Tae-Gun,Kim, Do-Yeon,Al-Deyab, Salem S.,Seong, Il Won,Swihart, Mark T.,Yoon, Woo Young,Yoon, Sam S. Elsevier 2017 ELECTROCHIMICA ACTA Vol.228 No.-
<P><B>Abstract</B></P> <P>Hematite (Fe<SUB>2</SUB>O<SUB>3</SUB>) nanoparticles and reduced graphene oxide (rGO) were supersonically sprayed onto copper current collectors to create high-performance, binder-free lithium ion battery (LIB) electrodes. Supersonic spray deposition is rapid, low-cost, and suitable for large-scale production. Supersonic impact of rGO sheets and Fe<SUB>2</SUB>O<SUB>3</SUB> nanoparticles on the substrate produces compacted nanocomposite films with short diffusion lengths for Li<SUP>+</SUP> ions. This structure produces high reversible capacity and markedly improved capacity retention over many cycles. Decomposition of lithium oxide generated during cycling activates the solid electrolyte interface layer, contributing to high capacity retention. The optimal composition ratio of rGO to Fe<SUB>2</SUB>O<SUB>3</SUB> was 9.1wt.%, which produced a reversible capacity of 1242mAhg<SUP>−1</SUP> after <I>N</I> =305 cycles at a current density of 1000mAg<SUP>−1</SUP> (1C).</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Lee, Jong Gun,Kim, Do-Yeon,Lee, Jong-Hyuk,Kim, Min-woo,An, Seongpil,Jo, Hong Seok,Nervi, Carlo,Al-Deyab, Salem S.,Swihart, Mark T.,Yoon, Sam S. American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.24
<P>We demonstrate production of nanotextured p type cupric oxide (CuO) films via a low-cost scalable supersonic cold spray method in open air conditions. Simply sweeping the spray nozzle across a substrate produced a largescale CuO film. When used as hydrogen evolution photocathodes, these films produced photocurrent densities (PCD) of up to 3.1 mA/cm(2) under AM1.5 illumination, without the use of a cocatalyst or any additional heterojunction layers. Cu2O particles were supersonically sprayed onto an indium tin oxide (ITO) coated soda lime glass (SLG) substrate, without any solvent or binder. Annealing in air converted the Cu2O films to CuO, with a corresponding decrease in the bandgap and increase in the fraction of the solar spectrum absorbed. Annealing at 600 degrees C maximized the PCD. Increasing the supersonic gas velocity from-450 to-700 m/s produced denser films with greater surface roughness, in turn producing higher PCD. The nanoscale texture of the films, which resembles the skin of a dinosaur, enhanced their performance, leading to one of the highest PCD values in the literature. We characterized the films by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, scanning electron microscopy, and transmission electron microscopy to elucidate the origins of their outstanding performance. This supersonic cold spraying deposition has the potential to be used on a commercial scale for low cost mass production.</P>
Lee, Gun Joon,Han, Bok Kung,Choi, Hyuk Joon,Kang, Shin Ho,Baick, Seung Chun,Lee, Dong-Un Korean Society for Food Science of Animal Resource 2015 한국축산식품학회지 Vol.35 No.6
We investigated the effects of a pulsed electric field (PEF) treatment on microbial inactivation and the physical properties of low-fat milk. Milk inoculated with Escherichia coli, Saccharomyces cerevisiae, or Lactobacillus brevis was supplied to a pilot-scale PEF treatment system at a flow rate of 30 L/h. Pulses with an electric field strength of 10 kV/cm and a pulse width of 30 µs were applied to the milk with total pulse energies of 50-250 kJ/L achieved by varying the pulse frequency. The inactivation curves of the test microorganisms were biphasic with an initial lag phase (or shoulder) followed by a phase of rapid inactivation. PEF treatments with a total pulse energy of 200 kJ/L resulted in a 4.5-log reduction in E. coli, a 4.4-log reduction in L. brevis, and a 6.0-log reduction in S. cerevisiae. Total pulse energies of 200 and 250 kJ/L resulted in greater than 5-log reductions in microbial counts in stored PEF-treated milk, and the growth of surviving microorganisms was slow during storage for 15 d at 4℃. PEF treatment did not change milk physical properties such as pH, color, or particle-size distribution (p<0.05). These results indicate that a relatively low electric-field strength of 10 kV/cm can be used to pasteurize low-fat milk.