Kyung Hee University – TechConnect Briefs

Nanostructural and biochemical property changes in activation-induced CD8+ T cell apoptosis utilizing AFM and Raman spectroscopy

Lee G.J., Lee Y.J., Lee G.J., Lee Y.J., Park H.K., Kyung Hee University, KR

This study was to investigate the changes in nanostructure and biochemical properties of activated mature CD8+ T cells related to apoptosis at a molecular level. We confirmed the activation and apoptosis of CD8+ T cells [...]

Possible explanations of the deviations in the thermal conductivity measurements

Han K., Lee M., Koo J., Kedzierski M.A., Kyung Hee University, KR

Nanofluids were invented to enhance thermal conductivity of the working fluid near the wall region, where the conduction is the only mechanism to dissipate heat and it limits the heat transfer rate from a body [...]

Ultrastructural and mechanical effects of collagen cross-linking treatment on human corneo-scleral tissues

Choi S., Jung G.B., Cheong Y., Shin J.-H., Jin K.-H., Park H.K., Kyung Hee University, KR

The aim of this study was to quantitatively examine the immediate effects of a photooxidative collagen cross-linking treatment with photosensitizer riboflavin and 370 nm UVA light in in vitro rabbit dermal collagen fibrils. These effects [...]

Simultaneous Measurement of Nitric Oxide and Oxygen Dynamics during Myocardial Ischemia Reperfusion of Rat

Lee G.J., Kang S-W, Kim O.K., Kim S.K., Kim O.K., Kim S.K., Shin J.-H., Park H.K., Kyung Hee University, KR

Myocardial function is dependent on a constant supply of oxygen from coronary circulation. Therefore the accurate measurement of oxygen concentration in postischemic myocardium is crucial to the assessment of myocardial viability and function. Nitric oxide [...]

Nanostructural Changes in Surface of Stainless Steel Archwires Combined with Orthodontic Conventional and Self-Ligating Brackets

Choi S., Joo H., Cheong Y., Lee S., Kim S., Park H.K., Park Y.-G., Park H.K., Park Y.-G., Kyung Hee University, KR

It is well-known that the frictional force between the archwire (AW) and the bracket reduces the efficiency of orthodontic treatment. It is affected not only by geometry of self-ligating brackets but also by physical changes [...]

Nanostructural Effects of Mitomycin C Applications on Scleral Collagen Fibrils: Atomic Force Microscopy Observation

Choi S., Cheong Y., Kwon E., Jung G.B., Lee H.J., Shin J.-H., Jin K.-H., Park H.K., Kyung Hee University, KR

This study was to investigate the effects of Mitomycin C on the scleral collagen surfaces by atomic force microscopy (AFM). Two non-contact mode AFM machines were used to observe changes in the morphological characteristics of [...]

Investigation of Taxol effects on morphological and micromechanical properties of human endometrial adenocarcinoma cells by AFM

Kim J.H., Kim K.S., Cho C.H., Choi Y.J., Kim J.H., Kim K.S., Choi Y.J., Jung G.B., Jung M-H, Yoon K-S, Woo Lee J., Lee G.J., Jung G.B., Jung M-H, Park H.K., Kyung Hee University, KR

The effects of Taxol on morphological and micromechanical properties of human endometrial adenocarcinoma (Ishikawa cell), were investigated by atomic force microscopy (AFM). The morphological and mechanical properties of the Ishikawa cell were significantly changed by [...]

Structural and Mechanical Changes in Heart Mitochondria of Rat by AFM

Lee G.J., Lee J.W., Chae S.-J., Kang S-W, Lee G.J., Lee J.W., Ha S.J., Kim W., Kim Y., Kim W., Kim Y., Park H.K., Kyung Hee University, KR

Mitochondria play critical roles in both the life and death of cardiac myocytes. Various factors such as loss of ATP synthesis and increase of ATP hydrolysis, impairment in ionic homeostasis, formation of reactive oxygen species [...]

Nanoscale structure and property changes in collagen fibrils on the extracorporeal shockwave therapy applications of the rat Achilles tendon injury

Choi S., Lee G.J., Chon J., Chae S.-J., Yoo S.-D., Park H.K., Park J.H., Kim K.S., Park H.K., Park J.H., Kyung Hee University, KR

Extracorporeal shockwave therapy (ESWT) is popular in the treatment of musculo-skeletal injuries. However, the mechanism by which such therapy might have an effect on tendon injury is unknown. The Achilles tendons are mainly composed of [...]

Measurement of Structural and Mechanical Property of Live Mesangial Cell (MC) by Atomic Force Microscopy (AFM)

Lee G.J., Lee S-H., Park E.J., Park H.K., Park J.H., Lee G.J., Lee S-H., Lim J.E., Eo Y.H., Han J.H., Choi S., Park E.J., Park H.K., Park J.H., Shin Y.A., Jin H.S., Hong K.W., Oh B.S., Park E.J., Park H.K., Park J.H., Kyung Hee University, KR

Atomic force microscopy (AFM) has become an important device to visualize various cells and biological materials for non-invasive imaging. The major advantage of AFM compared to the conventional optical and electron microscopes is its convenience. [...]