[en] A bridge transportation system for dual arm master-slave servo manipulator consists of an overhead transportation system for slave manipulator and a wall transportation system for master manipulator. This work includes fabrication of bridge(x-direction), trolley(y-direction), telescopic tube(z-direction), and rotation assembly for the overhead transportation system, and tube and rotation assembly for the wall transportation system. Moojin Co., Ltd. checked the drawings provided by KAERI and undertook the fabrication after minor revisions. Also, assembling procedures were addressed before tasks and used as assembling guides. After completion of the fabrication, inspection and performance tests were carried out and showed the bridge transportation system could fulfill its own functions

[en] (Bi_0.95La_0.05)(Fe_0.97Cr_0.03)O₃/CoFe₂O₄ double layered thin film was prepared on a Pt(111)/Ti/SiO₂/Si(100) substrate by using a chemical solution deposition method. By introducing CoFe₂O₄ buffer layer, the leakage current density and the multiferroic properties have been significantly improved. Low leakage current density of 3.3 × 10⁻⁷ A/cm² at 100 kV/cm, saturated ferroelectric hysteresis loop with 2P_r of 33 μC/cm² and 2E_c of 1120 kV/cm at applied electric field of 1180 kV/cm and ferromagnetic hysteresis loop with 2M_r of 39 kA/m and 2H_c of 298 kA/m at the magnetic field of 1587 kA/m were observed in the double layered thin film at room temperature. The improved electrical and multiferroic properties are ascribed to the stabilized perovskite structure by reducing oxygen vacancies due to the co-doping elements, which may also suppress the cycloid spin structure in BiFeO₃. Furthermore, CoFe₂O₄ buffer layer acts as a current barrier of (La, Cr) co-doped BiFeO₃. - Highlights: • Chemical solution deposition of (Bi_0.95La_0.05)(Fe_0.97Cr_0.03)O₃/CoFe₂O₄ double layered thin film. • Analysis of structural, electrical and magnetic properties. • Simultaneous ferroelectric and ferromagnetic properties were observed

[en] Understanding of the anatomy of the hepatic vein is important in manipulation for transplantation of the liver, hepatectomy and the treatment of hepatic trauma with avulsion of the hepatic vein. Demonstrated of the inferior right hepatic vein (IRHV) is also important; in some cases of hepatocellular carcinoma, thrombus can be seen in the IRHV; in primary Budd-Chiari syndrome, the IRHV is main draining vein; during hepatectomy, the postero-inferior segment of the right lobe and draining IRHV can be preserved. For some 10 months ultrasound examination was done in a total of 124 patients with normal liver function with special emphasis on the hepatic vein, their branches, and the IRHV, and analysed in terms of branching pattern and relative size of the hepatic vein and the detection rate of the IRHV.

[en] Clinicians have been dependant mainly on the radiologic findings in the diagnosis of the disease of salivary gland, because of difficulty in diagnosis or differentiation of the disease by clinical findings alone and paucity of laboratory method to support it. Among the various radiologic methods, xerosialography is the most simple, convenient and accurate method for diagnosis of salivary gland disease. We experienced 32 xerosialograms in patients of salivary gland disease and noticed many advantages of it. The results are as follows; 1.The most common lesion is benign mixed tumor, which is occupied over 2/3 of total. Patients' clinical symptom and signs are pain, tenderness, swelling and palpable mass on the salivary gland area, but there is no specific findings to identify each salivary gland lesions by clinical symptom. 3.Differential diagnosis of benign and malignant tumor is easy by xerosialographic findings. 4.Xerosialogram is more accurate than conventional film sialography and possible to identify small structures of salivary gland with good detail on one image and also more easily interpreted without special means of viewing

[en] This paper presents cold-test characteristics of a traveling-wave tube (TWT) helical slow-wave structure (SWS) as predicted by a three-dimensional simulation code, HFSS, and the way in which they compare with measured data. LMsuite, which is a one-dimensional code, is utilized to predict the non-linear and large-signal performance of the helical TWT. Good agreement is demonstrated between the experimental and the code-predicted data based on accurate modeling. Simulations predict that the TWT produces 16.6 W of saturated power at 9 GHz when the input power is 40 mW. Experiments show that a saturated output power of 15.1 W is produced when an input power of 60.5 mW is injected at 9 GHz. The third-order intermodulation distortions (IMDs) are 12 dBc at the P1 dB compression point and 19 dBc at a 10-dB backoff point from the P1 dB point.

[en] To evaluate the mid-term outcomes of percutaneous radiofrequency ablation (RFA) treatment in patients with small (< 4 cm) renal cell carcinoma (RCC) in Korea. Between 2010 and 2015, 51 patients (40 men and 11 women; median age, 57 years) with biopsyproven 51 RCC were treated using CT-guided RFA. All patients were clinically staged T1aN0M0 prior to RFA. The median tumor size and follow-up period were 2.1 cm (range, 1.0–3.9 cm) and 26 months (4–60 months), respectively. Local tumor progression, distant metastasis, primary and secondary effectiveness rates, and major complication rates were recorded. Estimated glomerular filtration rates (GFRs) between pre-RFA and last follow-up were compared using paired t tests. The 2-year recurrence-free survival rate was calculated using Kaplan-Meier survival analysis. Of the 51 patients, 2 (3.9%) experienced local tumor progression, and 1 (2.0%) had lymph node metastasis after the first RFA session. Primary and secondary effectiveness rates were 96.1% (49/51) and 100% (1/1), respectively. Only 1 patient experienced a major complication (uretero-pelvic stricture) after the second RFA session for treating a local tumor progression, and the major complication rate was 1.9% (1/52). The median pre-RFA and last follow-up GFRs were 87.1 mL/ min/1.73 m"2 (14.2–142.7 mL/min/1.73 m"2) and 72.0 mL/min/1.73 m"2 (7.2–112.6 mL/min/1.73 m"2), respectively (p < 0.0001). The 2-year recurrence-free survival rate was 96.0%. CT-guided RFA is a safe and effective treatment in Korean patients with T1a RCC because of excellent mid-term outcomes

[en] To evaluate the mid-term outcomes of percutaneous radiofrequency ablation (RFA) treatment in patients with small (< 4 cm) renal cell carcinoma (RCC) in Korea. Between 2010 and 2015, 51 patients (40 men and 11 women; median age, 57 years) with biopsyproven 51 RCC were treated using CT-guided RFA. All patients were clinically staged T1aN0M0 prior to RFA. The median tumor size and follow-up period were 2.1 cm (range, 1.0–3.9 cm) and 26 months (4–60 months), respectively. Local tumor progression, distant metastasis, primary and secondary effectiveness rates, and major complication rates were recorded. Estimated glomerular filtration rates (GFRs) between pre-RFA and last follow-up were compared using paired t tests. The 2-year recurrence-free survival rate was calculated using Kaplan-Meier survival analysis. Of the 51 patients, 2 (3.9%) experienced local tumor progression, and 1 (2.0%) had lymph node metastasis after the first RFA session. Primary and secondary effectiveness rates were 96.1% (49/51) and 100% (1/1), respectively. Only 1 patient experienced a major complication (uretero-pelvic stricture) after the second RFA session for treating a local tumor progression, and the major complication rate was 1.9% (1/52). The median pre-RFA and last follow-up GFRs were 87.1 mL/ min/1.73 m"2 (14.2–142.7 mL/min/1.73 m"2) and 72.0 mL/min/1.73 m"2 (7.2–112.6 mL/min/1.73 m"2), respectively (p < 0.0001). The 2-year recurrence-free survival rate was 96.0%. CT-guided RFA is a safe and effective treatment in Korean patients with T1a RCC because of excellent mid-term outcomes

[en] A continuous flow hyperpolarized (HP) ¹²⁹Xe NMR spectroscopy was employed for the first time to investigate TiO₂ nanotubes (Ti-NTs) synthesized from commercial nanoparticles with different reaction times. A single peak attributing to channels for Ti-NTs was observed for variable temperature HP ¹²⁹Xe NMR spectra. It was also noted that there is alteration in value for heat of adsorption, ΔH from 12.6 ± 1.3 to 16.4 ± 0.4 kJ/mol and variation in chemical shift of the xenon adsorbed in channels, δ_s from 120 ± 2 ∼ 135 ± 9 ppm which were closely correlated to channel length and it was shown that P25-24 Ti-NTs with longest channel is most favorite Ti-NTs for Xe adsorption

[en] A continuous flow hyperpolarized (HP) ¹²⁹Xe NMR spectroscopy was employed for the first time to investigate TiO₂ nanotubes (Ti-NTs) synthesized from commercial nanoparticles with different reaction times. A single peak attributing to channels for Ti-NTs was observed for variable temperature HP ¹²⁹Xe NMR spectra. It was also noted that there is alteration in value for heat of adsorption, ΔH from 12.6 ± 1.3 to 16.4 ± 0.4 kJ/mol and variation in chemical shift of the xenon adsorbed in channels, δ_s from 120 ± 2 ∼ 135 ± 9 ppm which were closely correlated to channel length and it was shown that P25-24 Ti-NTs with longest channel is most favorite Ti-NTs for Xe adsorption

[en] The Ti₄₀Zr₄₀Ni₂₀ hydrogen-absorbing alloy was prepared in the icosahedral and amorphous phases by controlling the rotation speed of the melt-spinning method of sample preparation, and the deuterium dynamics was investigated by ²H NMR dynamic lineshape and spin-lattice relaxation. The results were analysed by the lineshape and relaxation models that assume deuterium thermally activated hopping within a manifold of different chemical environments. The observed 8% larger activation energy for the deuterium hopping over the interstitial sites and the 10% larger static spectrum width of the amorphous phase, as compared to the icosahedral phase, can be accounted for by the larger deuterium content of the investigated amorphous sample. From the deuterium dynamics point of view, the icosahedral phase is not special with respect to the amorphous modification of the same material.