다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

2017 ESC Guidelines on the Diagnosis and Treatment of Peripheral Arterial Diseases, in collaboration with the European Society for Vascular Surgery (ESVS) : Document covering atherosclerotic disease of extracranial carotid and vertebral, mesenteric, renal, upper and lower extremity arteries

/pdf/2017-esc-guidelines-on-the-diagnosis-and-treatment-of-2vt5ciu2yn.pdf

When asked to explain the importance of the discovery of conducting polymers, I offer two basic answers: first they did not (could not?) exist, and second, that they offer a unique combination of properties not available from any other known materials. The first expresses an intellectual challenge; the second expresses a promise for utility in a wide variety of applications.

Semiconducting and Metallic Polymers: The Fourth Generation of Polymeric Materials (Nobel Lecture).

2020 ACC/AHA Guideline for the Management of Patients With Valvular Heart Disease: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines

https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.17366

Improvement of critical current density of MgB2 bulk superconductor processed by Spark Plasma Sintering

A method of joining by using a joining material an RE 123-based superconductor base material obtained by a melting method. With a joining surface of an RE 123-based oxide superconductor base material produced by a melting method as (110) and a joining material consisting of an RE 123-based oxide superconducting material lower in melting point than the above RE 123-based oxide superconductor interposed between joining surfaces, the joining material is melted and then solidified to form a joining layer to thereby join base materials to each other. A joining material may include a sintered body, melt-solidified body, powder, slurry or powder molding.

Method of joining oxide superconductor and oxide superconductor joiner

Control of the Nd422 second phase for the improvement of the critical current density in Nd-Ba-Cu-O superconductors

We fabricated large grain (Sm, Gd)-Ba-Cu-O bulk superconductors with the top-seeded, melt-growth process in air and 1%O2-Ar. Ag addition was effective in suppressing the amount of cracking. Unlike Sm-Ba-Cu-O, the (Sm, Gd)-Ba-Cu-O bulk showed relatively high Tc and large Jc values even when melt-processed in air. The trapped field value of 0.83 T was recorded at 77 K for the sample melt processed in air.

Superconducting properties of large grain (Sm, Gd)-Ba-Cu-O blocks

Morphology of Gd 2 BaCuO 5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd 0.33 Eu 0.33 Gd 0.33 ) Ba 2 Cu 3 O y +0.5 mol % of Pt (NEG-123) was studied as a function of varying amount (0–3 mol%) of CeO 2 . Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO 2 . With increasing CeO 2 content the critical current density, J c , increased particularly at low magnetic fields. The maximum value of J c was achieved for 1 mol% CeO 2 and reached 100 kA cm −2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.

Masato Murakami

Papers

Improvement of critical current density of MgB2 bulk superconductor processed by Spark Plasma Sintering

Method of joining oxide superconductor and oxide superconductor joiner

Control of the Nd422 second phase for the improvement of the critical current density in Nd-Ba-Cu-O superconductors

Superconducting properties of large grain (Sm, Gd)-Ba-Cu-O blocks

Effect of CeO2 addition on microstructure and magnetic properties in (Nd,Eu,Gd)–Ba–Cu–O