• 제목/요약/키워드: the double ray

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근에너지기법을 이용한 흉요추부 이중만곡 형태의 특발성 척추 측만증 호전 2례 (Two Cases of Idiopathic Scoliosis with Double Curved Thoracolumbar Spine using Muscle Energy Technique)

  • 이성준;이혁재;이유진
    • 척추신경추나의학회지
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    • 제12권2호
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    • pp.63-71
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    • 2017
  • Objectives : The purpose of this study is to report the effect of muscle energy technique(MET) on idiopathic scoliosis with double curved thoracolumbar spine. Methods : Two patients with idiopathic scoliosis with double curved thoracolumbar spine were treated by MET. To investigate the outcome of the patients' improvement, we observed the standing X-ray of cervical, thoracic, lumbar spine. And Cobb's angle, correctability and visual analog scale(VAS) were used to measure changes during treatment. Results : After treatment, Cobb's angle, correctability and VAS were improved significantly. Conclusions : MET showed significant improvement to idiopathic scoliosis with double curved thoracolumbar spine. There is limitation on this study due to insufficient number of cases. Further research should be followed.

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고감도 비은염 화상재료 개발연구 ( II ) - Copper Phthalocyanine/PVK 전자사진감광체의 CGL의 수성 coating mechanism과 세정효과에 관한 연구 - (A Study of the High Sensitive Nonsilver Halide Imaging Material( II ) - Study of the aqueous coating mechanism and washing effect of the CGL in the $\varepsilon$-CuPc/PVK double-layered organic photoconductor -)

  • 이상남
    • 한국인쇄학회지
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    • 제9권1호
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    • pp.27-44
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    • 1991
  • In this research, double-layered photoconductor consist of the carrier generation layer(CGL) of ${\varepsilon}$ type copper phthalocyanine thin film by an aqueous coating method and the carrier transport layer(CGL) of polyvinyl carbazol(PVK) by spin coating. We inverstigated effect of the surfactant solution and cathod electrolysis to the crystal type of ${\varepsilon}$-CuPc in CGL with TEM, SEM and X-ray diffraction spectroscopy and studied the mechanism of an aqueous coating for the preparation of CGL. The effect of the washing of CGL about the electrophotographic characteristics of the ${\varepsilon}$-CUPC/PVK double-layered photoconductors is studied also.

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유기화합물이 삽입된 층상이중수산화물의 합성과 구조 (The structure and synthesis of intercalation compound between a layered double hydroxide and an organic compound)

  • 우은경;허영덕
    • 한국결정성장학회지
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    • 제8권1호
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    • pp.36-41
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    • 1998
  • 유기화합물인 alkyl sulfonate를 층상이중수산화물에 삽입시킨 화합물을 합성하였다. X-선 회절 데이터와 alkyl sulfonate의 분자의 크기를 비교하여 층간 삽입된 alkyl sulfonate의 공간배열을 확입하였다. 층간 삽입된 alkyl sulfonate의 분자 사슬이 이중수산화물의 층에 수직되며 서로 반대 방향으로 배열되어 있음을 확인하였다.

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Step-wise Anion-Exchange in Layered Double Hydroxide Using Solvothermal Treatment

  • Lee, Jong-Hyeon;Rhee, Seog-Woo;Jung, Duk-Young
    • Bulletin of the Korean Chemical Society
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    • 제26권2호
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    • pp.248-252
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    • 2005
  • Synthetic layered double hydroxides (LDHs), [$Mg_4Al_2(OH)_{12}]CO_3{\cdot}nH_2O$, were prepared in the submicron size of plate-like polycrystals. Anion-exchange reactions with various linear dicarboxylic acids were performed to produce LDH/organic hybrid materials by solvothermal treatment in toluene. X-ray powder diffraction spectra for the products indicated that the interlayer spacings of LDHs remarkably changed, up to 20 $\AA$ when 1,10-decanedicarboxylic acid anions were intercalated as an organic guest. Dicarboxylates-LDHs samples could be also re-exchanged consecutively with other dicarboxylic acids or carbonate without serious destruction of layer structure under the scanning electron microscopic observation.

A New Gerbera Cultivar "Pink Swan"; High-yielding Cultivar with Pink and Semi-double for Cut-flower

  • Park, Sang Kun;Lim, Jin Hee;Kim, Mi Seon;Joung, Hyang Young;Shin, Hak Ki;Cho, Hae Ryong;Rhee, Hye Kyung
    • 한국육종학회지
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    • 제41권4호
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    • pp.539-542
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    • 2009
  • A new gerbera variety "Pink Swan" was released by the National Horticultural Research Institute (NHRI) in 2007. A cross was made between "Royal" with orange and single and 'Himalaya' with white and semi-double in 2004. After investigation of the characteristics for 4 years (from 2004 to 2007), it was selected specially for the use of cut-flower. "Pink Swan" is a vigorous medium-sized cultivar with pink (RHS R48D), yellow green center and semi-double. The average flower diameter is 10.6 cm. And inner ray floret and disc diameter is 5.99cm and 1.83cm, respectively. It produces a large yield with continuous supply of flowers and has adequate peduncle height. We believe that "Pink Swan" has a great potential for expanding cultivated area of domestic gerbera cultivar and increasing farmers-income.

CoCrTa/Ti 이층막의 하지층기판온도의존성 및 특성개선 (Improvement of characteristics and dependence on underlayer substrate temperature of CoCrTa/Ti double layer)

  • 김용진;성하윤;금민종;손인환;김경환
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2000년도 추계학술대회 논문집
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    • pp.492-495
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    • 2000
  • In order to develop an ultra-thin CoCr perpendicular magnetic recording layer, we prepared CoCrTa/Ti double layer for perpendicular magnetic recording media by new facing targets sputtering system, Crystallgraphics and magnetic characteristics of CoCrTa on underlayer substrate temperature have been investigated. Crystallgraphic and magnetic characteristic of thin films were evaluated by X-ray diffractometry(XRD), vibrating sample magnetometer(VSM) and atomic force microscopy(AFM). The coercivity and anisotropy field was increased by increasing under layer substrate temperature, c-axis orientation of CoCrTa magnetic recording layer was improved 8$^{\circ}$ to 5.6$^{\circ}$when under layer substrate temperature was 250[$^{\circ}C$]. Also, through annealing effect for CoCrTa/Ti double layer, it was certain that crystallgraphics and magnetic characteristics was improved.

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금속이중층수산화물의 메모리효과를 이용한 항균 천연소재의 담지 및 항균소재의 개발 (Incorporation of Antibacterial Natural Extract into Layered Double Hydroxide through Memory Effect for Antibacterial Materials)

  • 김형준;정도각;오제민
    • 세라미스트
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    • 제22권3호
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    • pp.301-315
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    • 2019
  • We prepared hybrids between layered double hydroxide (LDH) and natural plant extract such as Peaonia suffruticosa Andrews (PS) and Peaonia Japonica (PJ) which was confirmed anti-bacterial activity through paper disc diffusion assay. According to X-ray diffractometer, scanning electron microscope, zeta-potential measurement and quantification of extract loading amount in hybrids, we confirmed that similar amount of PS and PJ loaded on inter-particle pore of LDH with partial adsorption on surface of LDH through reconstruction process. We also evaluated the bacterial colony forming inhibition of PS extract, PJ extract, PS-LDH and PJ-LDH hybrids against Escherichia coli as gram negative bacterium and Bacillus subtilis as gram positive bacterium, suggesting that both hybrids have enhanced anti-bacterial activity compared with extract itself.

As이온이 주입된 Si의 구조적 특성 연구 (Study on Structural properties of As Ion -Implanted Si)

  • 믄영희;배인호;김말문;한병국;김창수;홍승수;신용현;정광화
    • 한국진공학회지
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    • 제5권3호
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    • pp.218-222
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    • 1996
  • STrained layers and strain depth profile of high dose As ion implanted (100) si wafer annealed at various temperatures have been investigated by means of X-ray double crystal diffractometry (X-ray DCD). The results obtained by x-ray rocking curve analysis showed a defect layer at the original amorphous /crystalline interface of 1400$\AA$ depth. In addition arsenic ion concentrtion profiles and defect distributions in depth were obtained by the SIMS and TRIM -code simulation . the positive strain depth profile determined from the rocking curve analysis were only presented under 0.14 $\mu$m from the surface for samples ananelaed at $600^{\circ}C$. The results was shown that the thickness of amprphous layer is 0.14 $\mu$m indirectry, and it was good agreement with the TRIM -Code simulation. Additionally, it could be thought that the positive strain have been affected residual intersitial atoms under the amorphous/crystalline interface formed by ion implantation.

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X-ray Crystal Structure of Hetaryl Leuco-TAM Dyes, (2Z,2'E)-2,2'-(2-Phenyl Propane-1,3-diylidene) Bis(1,3,3-trimethyl indoline) Derivatives

  • Keum, Sam-Rok;Roh, Se-Jung;Kim, Young-Nan;Im, Do-Hyuck;Ma, So-Young
    • Bulletin of the Korean Chemical Society
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    • 제30권11호
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    • pp.2608-2612
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    • 2009
  • The unequivocal solid-state structure and stereochemistry of the hetaryl leuco-TAM dye, 2,2’-(2-phenyl propane- 1,3-diylidene) bis(1,3,3- trimethylindoline) derivatives were established using X-ray single crystal analysis. The X-ray crystal analysis showed that the (Z, E)-isomers only formed stereoselectively, with a so-called “threebladed propeller” conformation, from the reaction of a Fischer base and benzaldehyde derivatives. These isomers were stacked in a juxtaposition to form a dimer or a double dimer, adopting either a triclinic, with P-1, or monoclinic crystal system with a space group P21/n in the unit cell of the crystal.