[en] Highly ordered zirconia nanowire arrays are prepared by sol-gel synthesis within the pores of anodic alumina oxide (AAO) template membrane. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) are used to characterize the morphology and crystalloid structure of zirconia nanowire arrays. The length and diameter of the zirconia nanowires are dependent upon the pore diameter and the thickness of the applied AAO template. The results indicate that the zirconia nanowires are very uniformly assembled and parallel to each other in the pores of the AAO template. This new method of preparing zirconia nanowire with a large surface area may be important in applications ranging from gas sensors to various engineering materials

[en] The effect of ADP-ribosylation on transcriptional activity in isolated nuclei from spleen of adult male rats irradiated with 8 Gy gamma-rays studied. The results showed the activities of RNA pol(I + III) were all inhibited by ADP-ribosylation and this inhibition was lost in the presence of 3-AB, a specific inhibitor of ADPRT. It confirmed the effect of ADP-ribosylation. The fact that ADPRT activity decreased within 4 hours after irradiation and subsequently restored entirely after 18 hours showed irradiation of 8 Gy gamma ray inhibited the ADPRT activity and the effect of irradiation disappeared quickly

[en] The Computerized Procedure System is introduced about scope, functional requirement, system configure, software interface and hardware. The advantages of the CPS are analyzed. The Computerized Procedure System is applied in AP1000 designs. It can help operators knowing sufficiency of the status of power plant and their positions in the procedure when the plant is in abnormal or in accident. The accuracy and efficiency of procedure is improved, the intensity is lowered. The primarily opinions are discussed on the problem which need to pay attention to in the phases of design and operation. (authors)

[en] A method for solving directly the eigenvectors of a Hermitian five diagonal matrix is developed. It does not use a block tridiagonal matrix to solve. The results of calculation demonstrate that this method with high accuracy and low storage is very suitable to the disordered system. It can be used to calculate high order matrix in order to meet the needs of disordered system

[en] As the first completely independent nuclear power project in China, Fangjiashan nuclear power project is constructed under EPC mode of general project contracting. This paper, taking the project as an example, aims to explore how the project owners carry out quality management for the installation project during the construction of the nuclear power plant based on EPC mode. It has certain reference value for the management of following nuclear power projects which adopting the EPC construction mode. It will play a positive role in improving China's overall self-management abilities in the nuclear power construction, and lay a solid foundation for follow-up nuclear power construction in China. (authors)

[en] Rats were divided into three groups and subjected to total body irradiation of 6 Gy γ rays from a ⁶⁰Co source, 30% total body surface area full thickness burns, or both of them, respectively. The changes of β-adrenoceptor concentration in myocardial membrane were observed on 1,3,8,16 and 24h after injury. It was found that B_max was significantly decreased in all the three groups during 24h after injury. The value of KD increased only at 1h and 3h after radiation injury. The decrease of β-adrenoceptor concentration in rats may be one of the major reasons for cardiac dysfunction after radiation, burn and combined injuries. The reasons of decreasing β-adrenoceptor concentration are discussed

[en] Highlight: • Roasting the ash with CaCl₂ enhanced the removal of uranium and gross radioactivity. • 87.3% of the total uranium was removed via the optimized roast-leach process. • Nearly 90% of gross α and β radioactivity was removed via the roast-leach process. • Molten CaCl₂ promoted the incorporation of Ca and Al into Si-O matrices in ash. • Radionuclides were removed by the acid decomposition of newly formed silicates. - Abstract: A roast-leach method using CaCl₂ and HNO₃ to remove uranium and gross radioactivity in coal bottom ash was investigated. Heat treatment of the ash with 100% CaCl₂ (900 °C, 2 h) significantly enhanced uranium leachability (>95%) compared with direct acid-leaching (22.6–25.5%). The removal efficiency of uranium and gross radioactivity increased steeply with increasing CaCl₂ content, from 10% to 50%, and a HNO₃ leaching time from 5 min to 1 h, but remained nearly constant or decreased slightly with increasing CaCl₂ dosage >50% or acid-leaching time >1 h. The majority of the uranium (87.3%), gross α (92.9%) and gross β (84.9%) were removed under the optimized roast-leach conditions (50% CaCl₂, 1 M HNO₃ leaching for 1 h). The mineralogical characteristics of roasted clinker indicated that molten CaCl₂ promoted the incorporation of Ca into silica and silicates and resulted in its progressive susceptibility to acid attack. Uranium and other radionuclides, most likely present in the form of silicates or in association with miscellaneous silicates in the highest density fraction (>2.5 g mL⁻¹), were probably leached out as the result of the acid decomposition of newly formed “gelatinizing silicates”

[en] The liver X receptors (LXRs) are transcriptional regulators of lipid homeostasis and may be critical for neurodegeneration and neurogenesis in vivo. However, it remains largely unknown about the role of LXRs and its agonists in the in vitro proliferation of neural progenitor cells (NPCs). Here we revealed for the first time that LXRs were markedly expressed in mouse NPCs and were critical for the in vitro proliferation. LXR agonists GW3965 and LXR623 promoted the proliferation of wildtype NPCs, but not NPCs from LXR double-knockout mice. Mechanistically, phosphorylation of MEK1/2 and ERK1/2 in NPCs was enhanced upon LXR agonist treatment, while abrogation of MEK/ERK phosphorylation by the inhibitors PD98059 and U0126 impaired the proliferation of wildtype NPCs in the presence or absence of LXR agonists. Collectively, our findings suggest that LXR agonists GW3965 and LXR623 can stimulate the NPC proliferation in LXR- and MEK/ERK-dependent manner. - Highlights: • LXRs are expressed and functional in the mouse neural progenitor cells (NPCs). • LXRs are essential for the in vitro proliferation of mouse NPCs. • LXR agonists stimulate the proliferation of wildtype NPCs, but not LXRαβ−/− cells. • Phosphorylation of ERK/MEK was enhanced by LXR agonists in wildtype NPCs. • Inhibition of MEK/ERK phosphorylation impaired the proliferation of NPCs.

[en] A calibrate technology of background phases in two main parts is introduced in the EAST lower hybrid wave antenna phases collection and control system. One part is referred to static calibration of the background phases caused by tangency of phased multi-junction grill antenna and plasma. The other part is referred to dynamic calibration of the alterable background phase caused by soft wave-guide flex When the antenna is being moved. The calibrate technology of lower hybrid wave antenna background phases provides an exact phase base point of phase feedback control system. It could be a foundation for the consistency of the pre-establish phases and actual phases. (authors)

[en] Highlights: • Quantitative correlations firstly established for cementitious waste forms. • Quantitative correlations firstly established for geopolymeric materials. • Ternary DuraLith geopolymer waste forms for Hanford radioactive wastes. • Extended setting times which improve workability for geopolymer waste forms. • Reduced hydration heat release from DuraLith geopolymer waste forms. - Abstract: The binary furnace slag-metakaolin DuraLith geopolymer waste form, which has been considered as one of the candidate waste forms for immobilization of certain Hanford secondary wastes (HSW) from the vitrification of nuclear wastes at the Hanford Site, Washington, was extended to a ternary fly ash-furnace slag-metakaolin system to improve workability, reduce hydration heat, and evaluate high HSW waste loading. A concentrated HSW simulant, consisting of more than 20 chemicals with a sodium concentration of 5 mol/L, was employed to prepare the alkaline activating solution. Fly ash was incorporated at up to 60 wt% into the binder materials, whereas metakaolin was kept constant at 26 wt%. The fresh waste form pastes were subjected to isothermal calorimetry and setting time measurement, and the cured samples were further characterized by compressive strength and TCLP leach tests. This study has firstly established quantitative linear relationships between both initial and final setting times and hydration heat, which were never discovered in scientific literature for any cementitious waste form or geopolymeric material. The successful establishment of the correlations between setting times and hydration heat may make it possible to efficiently design and optimize cementitious waste forms and industrial wastes based geopolymers using limited testing results