Kang Soo Lee

Purpose : To evaluate the CT findings which may help differentiate pelvic inflammatory bowel mass(IBM) fromtubo-ovarian abscess(TOA). Materials and Methods : Twenty-five patients with histologically confirmed TOA(n=14),periappendiceal abscess(n=9), an abscess caused by diverticulitis(n=1), and by ulcerative colitis(n=1) wereevaluated. For TOA, age distribution ranged only from the 3rd to the 5th decade, but for IBM, the range was the2nd to 8th decade with highest frequency during the 3rd-4th decade. CT findings were retrospectively analysed forbilaterality, internal septa, anterior displacement of the mesosalpinx, and perirectal and mesenteric fat Results: Mesenteric fat infiltration was detected in all 11 cases of pelvic IBM, but in only two of 14 TOA cases(p

Diverticulitis

Pelvic inflammatory disease

10.3348/jkrs.1999.40.3.543

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Optofluidic particle manipulation in a liquid-core/liquid-cladding waveguide

Optics Express (2012)

Kang Soo Lee Sang Youl Yoon Kyung Heon Lee Sang Bok Kim Hyung Jin Sung

This paper describes a method for particle manipulation in a liquid-core/liquid-cladding optical waveguide system. Step-index and graded-index waveguides were modeled with consideration for, respectively, miscible and immiscible core and cladding fluids. The characteristic motions of four different particles with refractive indices of 1.59, 1.48, 1.37, and 1.22 were examined. The guided beam was assumed to be Gaussian in shape. Our results showed that high-refractive-index particles converged at the center of the core fluid due to a positive gradient force, whereas low-refractive-index particles converged at the flow periphery. The nonlinearity of the particle motion increased as the flow velocity and the guided beam waist decreased and the laser power and the particle size increased. The initial beam waist of the guided beam in the graded-index waveguide did not significantly affect the characteristics of the particle motion due to the effects of diffusion.

Cladding (metalworking)

Step-index profile

Gaussian beam

Waveguide

Particle (ecology)

10.1364/oe.20.017348

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Citations (13)

Hollow Sodium Nickel Fluoride Nanocubes Deposited MWCNT as An Efficient Electrocatalyst for Urea Oxidation

Electrochimica Acta (2017)

Nitul Kakati Jatindranath Maiti Kang Soo Lee B. Viswanathan Young Soo Yoon

Chronoamperometry