[en] Lanthanum modified lead zirconate titanate (Pb_0.91La_0.09)(Zr_0.65Ti_0.35)O₃ (PLZT) ferroelectric thin films were grown on Pt/Ti/SiO₂/Si(1 0 0) and fused quartz substrates using a sol-gel method with rapid thermal annealing processing. The results showed that the highly (1 1 1)-oriented pervoskite PLZT thin film growth on Pt/Ti/SiO₂/Si(1 0 0) substrates. The electrical measurements were conducted on PLZT films in metal-ferroelectric-metal capacitor configuration. The PLZT thin films annealed at 600 deg. C showed well-saturated hysteresis loops with remanent polarization and coercive electric field values were 10.3 μC/cm² and 36 kV/cm, respectively, at an applied field of 300 kV/cm. At 100 kHz, the dielectric constant and dielectric loss of the film are 682 and 0.021, respectively. The PLZT thin film on fused quartz substrate, annealed at 600 deg. C, exhibited good optical transmittance, the band gap of optical direct transitions is 3.89 eV

[en] Objective: To explore the correlation between clinical factors and the prognosis of multiple myeloma (MM). Study Design: A cohort study. Place and Duration of Study: At the Third Affiliated Hospital of Inner Mongolia Medical University, Mongolia from January 2014 to December 2018. Methodology: The clinical data of 81 patients with newly diagnosed MM were collected retrospectively. The correlation of prognosis with immunophenotype and (FISH) Fluorescence in situ hybridization was subjected to univariate and multivariate analyses. Overall and progression-free survival was determined. Results: The overall survival (OS) and progression-free survival (PFS) of patients with CD200+, CD81+, and CD27– were significantly shortened. CD200+ and CD27– were independent prognostic factors for OS and PFS in MM patients. The prognosis-related abnormal genes were analyzed, and univariate analysis revealed that OS and PFS were significantly shortened in patients with RB-1 deletion, CDKN2C deletion, and IGH rearrangement. CDKN2C deletion was an independent prognostic factor for OS and PFS in MM patients. Conclusion: CDKN2C deletion is an independent prognostic factor of MM. CD200+ is an independent risk factor for poor prognosis of MM. (author)

No abstract available

[en] The supercritical water reactor (SCWR) offers many advantages compared to current light and heavy water cooled reactor. However, one of the key challenges is the selection of materials that can withstand the corrosive conditions that will exist in the core and in downstream components. The materials used in this work were Alloy 625 and 316 SS in tube shape. Water was lost during exposure of capsule specimens at 500^oC and the amount of lost water increases with exposure time. No cracks were observed on Alloy 625 after 3 weeks of exposure at 500^oC, while cracks at the inner wall of the tube were observed on 316 SS only after 4 hour heating at 500^oC. The oxide layer on 316 SS is much thicker than that formed on Alloy 625. (author)

[en] The influence of ultrasonic peening on oxidation of designed Ferritic/Martensitic (F/M) steels in supercritical water has been investigated with time range from 100 hours to 1000 hours. It was observed that in the tested time range, the weight gain of the samples with ultrasonic peening pre-treatment is much less than that of the ones without ultrasonic peening. Different oxide film formed on the surface after SCW exposure. These results indicate that designed F/M steels with ultrasonic peening have better oxidation resistant in 500°C, 25MPa supercritical water than the ones without ultrasonic peening. (author)

[en] This study determined the stress corrosion cracking behaviour of austenitic alloys in pure supercritical water. Austenitic stainless steels 310S, 316L, and Inconel 625 were tested as static capsule samples at 500"oC for up to 5000 h. After that period, crack initiations were readily observed in all samples, signifying susceptibility to stress corrosion cracking. The microcracks in 316L stainless steel and Inconel 625 were almost intergranular, whereas transgranular microcrack initiation was observed in 310S stainless steel. (author)

[en] In the present study, the effect of exposure duration on the corrosion and stress corrosion cracking of 310 stainless steel tube in a supercritical water environment was investigated at 500"oC in a decreasing dissolved oxygen regime. Oxide films formed three distinct layers after exposure to SCW for 2500 hours.On the outer layer, large magnetite crystals were observed which were tiny on the surface after exposed for 500 hours. In the middle-oxide layer, the concentrations of iron, chromium and nickel were close to those in the substrate. In the inner layer, chromium was enriched while iron was depleted. With increasing exposure duration, the thickness of the oxide layer increased. In the sub-layers of magnetite crystals, some iron-deficient regions were seen because of the selective outward diffusion of iron.Some micro cracks started to form from those iron-deficient regions. (author)

[en] Highlights: • Co_3O_4 rods were grown on plasma treated Ti foil. • Cu_2O QDs were uniformly distributed on the surface of nanorods. • Ti/Co_3O_4/Cu_2O exhibited visible light photocatalytic activity with KHSO_5. • Degradation mechanism was supported by ESR technique and radical scavenger tests. • The heterojunction was highly stable even after recycling many times. - Abstract: A heterogeneous nanocomposite catalyst constructed by the Co_3O_4 nanorods decorated with the Cu_2O quantum dots (QDs) were successfully synthesized via a simple hydrothermal method followed by an oxidation-reduction processing. The fabricated Cu_2O/Co_3O_4 nanocomposite was characterized by the SEM, TEM, XPS, XRD, UV–vis and PL, and the (2 2 0) and (3 1 1) facets of the Co_3O_4 were exposed. Compared with the original Co_3O_4 nanorods with an average diameter of 350 nm, a substantial decrease in the band gap was observed after doping the nanorods with the Cu_2O QDs (average diameter of 5 nm). Such a dramatic decrease in the band gap indicated a significant enhancement of the photocatalytic activities under visible light. The methylene blue (MB) dye and the phenol were used as model organic pollutants, and the Cu_2O/Co_3O_4 nanocomposite catalyst exhibited both high catalytic activity and good recycling stability. The catalytic activities of the Cu_2O/Co_3O_4/potassium monopersulfate triple salt (PMS) system for cleaving the MB and the phenol were dependent on the dosages of the Cu_2O QDs, and the calculated degradation rates achieved by 7.0 wt% Cu_2O/Co_3O_4 nanocomposite catalyst were about 11.3 and 1.8 times than that of the pristine Co_3O_4 nanorod catalyst for the MB and the phenol, respectively. The reactive species of ·O_2"− and the holes were determined to be the main active species for the phenol photocatalytic degradation by the 7 wt% Cu_2O/Co_3O_4/PMS system and the 7 wt% Cu_2O/Co_3O_4/H_2O_2 system, respectively.

[en] We have fabricated and studied an organic light emitting diode (OLED) with a p-type silicon anode and a SiO₂ buffer layer between the anode and the organic layers which emits light from a semitransparent top Yb/Au cathode. The luminance of the OLED is up to 5600 cd/m² at 17 V and 1800 mA/cm², the current efficiency is 0.31 cd/A. Both its luminance and current efficiency are much higher than those of the OLEDs with silicon as the anodes reported previously. The enhancement of the luminance and efficiency can be attributed to an improved balance between the hole- and electron-injection through two efficient ways: 1) restraining the hole-injection by inserting an ultra-thin SiO₂ buffer layer between the Si anode and the organic layers; and 2) enhancing the electron-injection by using a low work function, low optical reflectance and absorption semitransparent Yb/Au cathode