[en] As Nuclear Power is a solution of clean, high efficient and reliable energy, it has been accepted by more and more countries and people all over the world. Many countries carried out their Nuclear power development plan and started to construct the new plants in recent years. When we talk about the NPPs New Build, the number of those plants in China is the biggest globally and the time schedules of most plants are going well. This presentation will focus on the introduction of the NPPs under construction, the status of those projects, as well as the performance of the NPPs in operation in China. Besides, as the main investor, owner and operator of NPPs in China, CNNC has accumulated rich experience in nuclear power design, R&D and constructing in PWR such as ACP100, ACP600, HPR1000 as well as CANDU 6. So, the HPR1000 developed by CNNC with intellectual property will be presented and also the marketing development of it will also be shared in this part. As for the Small Modular Reactor, China also made progress in recent years. The status of SMR such as R&D, licensing, marketing, including the international cooperation on it will also be introduced.

[en] The uncertainty of primary cosmic ray composition at 10 to the 14th power -10 to the 16th power eV is well known making the study of nuclear interaction mechanisms more difficult. Experimentally if one can identify effectively the family events produced at low heights, then an induced by primary protons might be separated. In this paper an attempt is made to simulate a family of events under the conditions of a mountain emulsion chamber experiments using a reasonable model. The aim is to search for the dependence of some experimentally observable quantities on the interaction height

[en] The reaction of CrII(NCMe)4(BF4)2 and (NBun4)(TCNE) (TCNE = tetracyanoethylene) in CH2Cl2 forms a solid that is a mixture of an amorphous reduced-TCNE containing phase(s) and a crystalline component. Rietveld refinement of the high-resolution, synchrotron X-ray powder pattern enabled the determination of the structure of the crystalline phase to be of CrIIF(NCMe)2BF4 composition and illustrates that this methodology can be used to determine the structure of a crystalline substance of unknown composition in the presence of confounding information from coexisting amorphous material. CrIIF(NCMe)2BF4 exhibits a 1-D chain structure with both ?-F and ?-BF4- linkages that forms a nonplanar 6-membered FCrFBFCr ring. CrIIF(NCMe)2BF4 possesses a previously unknown structure type and is a potential source of CrIIF+ for synthesis applications.

[en] Radiocarbon (14C) is a powerful tracer of the global carbon cycle that is commonly used to assess carbon cycling rates in various Earth system reservoirs and as a benchmark to assess model performance. Therefore, it has been recommended that Earth System Models (ESMs) participating in the Coupled Model Intercomparison Project Phase 6 report predicted radiocarbon values for relevant carbon pools. However, a detailed representation of radiocarbon dynamics may be an impractical burden on model developers. Here, we present an alternative approach to compute radiocarbon values from the numerical output of an ESM that does not explicitly represent these dynamics. The approach requires computed 12C stocks and fluxes among all carbon pools for a particular simulation of the model. From this output, a time‐dependent linear compartmental system is computed with its respective state‐transition matrix. Using transient atmospheric 14C values as inputs, the state‐transition matrix is then applied to compute radiocarbon values for each pool, the average value for the entire system, and component fluxes. We demonstrate the approach with ELMv1‐ECA, the land component of an ESM model that explicitly represents 12C, and 14C in 7 soil pools and 10 vertical layers. Results from our proposed method are highly accurate (relative error <0.01%) compared with the ELMv1‐ECA 12C and 14C predictions, demonstrating the potential to use this approach in CMIP6 and other model simulations that do not explicitly represent 14C.

[en] A reversible conversion of the cubic trianionic fulleride superconductors Na₂RbC₆₀ and Na₂CsC₆₀ to orthorhombic structures is observed at modest pressures (≤ 3 kbar) and ambient temperature. Structure refinement based on synchrotron powder x-ray profiles reveals polymer chains with 9.35 A intermolecular separation, comparable to that in the metastable monoanionic dimer and polymer phases of KC₆₀ and RbC₆₀. In contrast, K₃C₆₀, Rb₃C₆₀, etc. are stable to much higher pressures due to their larger lattice constants at ambient pressure

[en] This paper reports on a modular data acquisition and position analysis system (DAPAS) designed and tested for a multi-bar cylindrical SPECT scanner. The detector assembly is a position-sensitive cylindrical gamma camera comprised of multiple detector modules, each of which contains multiple NaI(Tl) bars. An array of PMTs is coupled on the outside of the detector cylinder for position analysis. The major components of the module data acquisition system are: a regional pulse height summation network for each detector module; an analog multiplexer/encoder network to select the output of the relevant PMTs; an ADC system to digitize the selected PMT outputs and store in FIFOs. The position analysis, performed in real-time by a digital signal processor (DSP), involves identifying the bar in the detector module and calculating axial position along the bar for each accepted scintillation event. Throughput rate for the position analysis of the DSP is estimated to be 35 kHz

[en] Objectives: To determine the correlation between the expression of silent information regulator 1 (SIRT1) and enhancer of zeste two polycomb repressive complex two subunit (EZH2) and peritoneal function in patients with diabetic nephropathy (DN) and peritoneal dialysis. Methods: One hundred forty patients with DN underwent peritoneal dialysis in Hanchuan People’s Hospital from April 2016 to January 2019 were divided into four groups according to the duration of peritoneal dialysis. The levels of SIRT1 and EZH2 in serum were measured. The ratio of dialysate to plasma creatinine (D/Pcr) and the concentration of cancer antigen 125 (CA125) in peritoneal dialysate were determined. The ratio of urea clearance to urea distribution volume (Kt/V) of dialyzer was calculated. The correlations between SIRT1 and EZH2 expressions and peritoneal function were analyzed. Results: With the prolongation of peritoneal dialysis, serum SIRT1 expression, Kt/V, Ccr and CA125 decreased, while EZH2 expression and D/Pcr increased in patients with DN undergoing peritoneal dialysis. Pearson’s correlation analysis showed that SIRT1 expression was negatively correlated with D/Pcr while positively correlated with Kt/V and CA125, and serum EZH2 expression was negatively correlated with Kt/V and CA125 while positively correlated with D/Pcr. ROC analysis demonstrated that SIRT1 and EZH2 expressions had certain diagnostic value for the poor prognosis of patients with DN undergoing peritoneal dialysis. Conclusion: Serum SIRT1 and EZH2 expressions in patients with DN undergoing peritoneal dialysis are closely related to their peritoneal function. They have certain diagnostic value for the poor prognosis of patients with DN undergoing peritoneal dialysis. (author)

[en] Objective: To investigate the frequency of deep vein thrombosis (DVT) in patients aged over 80 years on admission after intertrochanteric femur fracture and to explore the risk factors of DVT. Study Design: Descriptive study. Place and Duration of the Study: Department of Orthopaedics, China-Japan Friendship Hospital, Beijing, China, from 1st January 2019 to 31st December 2022. Methodology: A group of patients aged over 80 years with intertrochanteric fracture were included according to the presence or absence of DVT confirmed by ultrasonography on admission. The patients were divided into the non-DVT and DVT groups. Clinical data were retrospectively compared between the two groups and analysed by multivariate logistic regression to screen risk factors of DVT. Results: A total of 130 patients meeting the inclusion criteria were enrolled, and 37 of them had DVT on admission, with a prevalence of 28.5%, including 25 (67.6%) distal peripheral DVT, 11 (29.7%) proximal central DVT, and 1 (2.7%) mixed DVT. The American Society of Anaesthesiologists (ASA) classification, Charlson comorbidity index, the serum levels of D-dimer, fibrinogen degradation products, albumin, potassium, inorganic phosphorus, and calcium showed significant differences between the two groups (p <0.1). Multivariate analysis identified increased D-dimer (>6.005 mg/L), decreased albumin (<36.45 g/L), and reduced potassium (<3.650 mmol/L) as independent factors for DVT in aged intertrochanteric fracture patients (AIFPs). Conclusion: A high incidence of DVT was revealed in AIFPs, and elevated D-dimer levels, reduced albumin levels, and reduced potassium concentrations were shown to be correlated to DVT. (author)

[en] Thioantimonate compounds of [Mn(en)₃]₂Sb₂S₅ (1) and [Ni(en)₃(Hen)]SbS₄ (2) (en=ethylenediamine) were prepared by reaction of transition metal chloride with Sb and S₈ powders under solvothermal conditions. Compound 1 consists of discrete [Sb₂S₅]^4- anion, which is formed by corner-sharing SbS₃ trigonal pyramids. Compound 2 is composed of discrete tetrahedral [SbS₄]^3- anion. The compounds 1 and 2 are charge compensated by [M(en)₃]²⁺ cations, whereas in the crystal of 2 there is another counter ion of [Hen]⁺. The results of the synthesis suggest that the temperature, the concentration and the existing states of the starting materials and so on are important for the structure and composition of the final products. In addition, the oxidation-state of antimony might be related to the molar ratio of the reactants. Excess amount of elemental S is beneficial to the higher oxidation-state of thioantimonate (V). Compound 1 decomposes from 150 deg. C to 350 deg. C, while compound 2 decomposes from 200 deg. C to 350 deg. C remaining Sb₂S₃ and NiSbS as residues

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