[en] In order to catalyse the oxidation of tritium gas safely, two new hydrophobic catalysts were prepared for the emergency disposal of tritium gas leakage by choosing two inorganic hydrophobic substances as carrier and Pt as active component. Under room temperature, the catalysed oxidation ratio of 3‰ (V/V) -1% (V/V) hydrogen gas in air is higher than 95%, the speed constant is higher than 2.0 s"-"1; under room temperature, conversion ratio of 0.3‰ hydrogen in air is higher than 90%, the speed constant is higher than 1.6 s"-"1. It can be concluded that the catalysts can be used to catalyse tritium waste gas oxidation. Furthermore, Pt- inorganic hydrophobic catalysts has obviously better Ⅱ catalysing ability than Pt-PTFE and lower ability than Pt-SDB in H_2-HTO isotopic exchange, because the pressure resistance of Pt-Ⅱ is much higher than Pt-SDB, it can be used to the CECE cell of heavy water detritium system. (authors)

[en] The hydrothermal reaction of transition metals, 1H-imidazole-4,5-dicarboxylic acid (H_3ImDC) and 1,2-bi(pyridin-4-yl)ethene (bpe) affords a series of new complexes, namely, [Mn(HImDC)(bpe)(H_2O)] (1), [M(H_2ImDC)_2(H_2O)_2]·(bpe) (M=Fe(2), Co(3), Zn(4), Cd(6)), [Zn_3(ImDC)_2(bpe)(H_2O)]·3H_2O (5) and [Cd(H_2ImDC)(bpe)] (7), which are characterized by elemental analyses, IR, TG, XRPD and single crystal X-ray diffraction. Complex 1 exhibits a one dimensional (1D) zigzag chain with two types of irregular rings, and the 1D chains are linked to form a three dimensional (3D) supramolecular framework by the hydrogen bonding interactions (O–H∙∙∙O and O–H∙∙∙N). Complexes 2–4 and 6 are isomorphous, and they display the mononuclear structures. In these complexes, the O–H∙∙∙O and O–H∙∙∙N hydrogen bonds play an important role in sustaining the whole 3D supramolecular frameworks. Complex 5 shows a (3,3)-connected 3D framework with (10"3) topology, and the lattice water molecules as guest molecules exist in the 3D framework. Complex 7 is a wave-like two dimensional (2D) structure, in which the adjacent 1D chains point at the opposite directions. Moreover, the fluorescent properties of complexes 1–7 and the magnetic property of 1 have been investigated. The water vapor adsorption for complex 5 has been researched at 298 K. - Graphical abstract: Seven new complexes based on different structural characteristics have been hydrothermally synthesized by the mixed ligands. The fluorescent properties, the magnetic property and the water vapor adsorption have been investigated. - Highlights: • The semi-rigid ligand with C=C bonds and imidazole dicarboxylates with some advantages have been used. • A series of new complexes with different structural characteristics have been discussed in detail. • The fluorescent properties, the magnetic property and the water vapor adsorption have been investigated

[en] The Ca₉La(PO₄)₅(SiO₄)Cl₂:Dy³⁺ (CLPSCl:Dy³⁺) powder phosphor with apatite structure has been successfully synthesized via high-temperature solid state method. Single phase in such phosphor was verified through X-ray diffraction (XRD) technique. The Dy ions concentration dependent luminescence properties including emission, excitation and lifetimes of Dy ions were characterized using photoluminescence (PL) spectroscopy. The results showed that CLPSCl:Dy³⁺ phosphor could efficiently assimilate the n-UV light and emit blue (~486 nm) and yellow light (~578 nm), originating from the f-f transitions of Dy³⁺. The critical Dy³⁺ quenching concentration (QC) was determined to be about 12 mol%. The concentration quenching mechanism was also determined to be dipole–dipole interaction.

[en] We propose a complex network-based method to distinguish complex patterns arising from experimental horizontal oil–water two-phase flow. We first use the adaptive optimal kernel time–frequency representation (AOK TFR) to characterize flow pattern behaviors from the energy and frequency point of view. Then, we infer two-phase flow complex networks from experimental measurements and detect the community structures associated with flow patterns. The results suggest that the community detection in two-phase flow complex network allows objectively discriminating complex horizontal oil–water flow patterns, especially for the segregated and dispersed flow patterns, a task that existing method based on AOK TFR fails to work. - Highlights: • We combine time–frequency analysis and complex network to identify flow patterns. • We explore the transitional flow behaviors in terms of betweenness centrality. • Our analysis provides a novel way for recognizing complex flow patterns. • Broader applicability of our method is demonstrated and articulated

[en] In the condition of tritium treatment, it always involved detritiation for tritium permeation or even leakage. The purification system was designed for glove box in tritium fuel cycling during normal condition and emergency. Tritium gas is pumped from glove box into the detritiation system, passing through the beforehand capture and the mixer, entering the oxidation catalyze bed, the tritium gas is oxidized into HTO, the HTO vapor is brought out from the reactor by gas, passing through the cooler, and then the HTO is wiped off by adsorbent. The concentration of tritium out of the adsorbent bed is detected by the on line tritium detector. If the concentration of the tritium is beyond the exhausting limit, the tritium gas will be sent into the glove box and treated until it is below the limit, and it could be exhausted. If the gas atmosphere is inert gas (such as Ar) atmosphere, small oxygen will be added into the mixer. If the tritium concentration is very low, hydrogen gas will be added into the mixer to accelerate the reaction. The treatment ability of the purification system is shown as follows: in the flow rate range 0-6 m³/h, one way catalyzed oxidation ability of H2 is higher than 98%.When the system is used to deal with 0.4% (VN) H2 in 300 L air, it could reduce the H2 concentration of gas to 1/10 of the beginning in 5.4 min and 1/1000 of the beginning in 20 min.The purification results of tritium gas is shown in Table 1.The tritium waste gas is enclosed in a 1 m³ pot, and the tritium gas is purified circularly with the purification system, the flow rate is 60 L/min, it can be see that the purification system is very efficient. (authors)

[en] In order to deal tritium permeated from inflating tritium system at the scene of inflating tritium, dealing waste tritium gas system was designed according to demand and action of waste tritium gas from inflating tritium, and the data of character and volume about appliance of catalyst reaction and drying agent was calculated. Through the test at the scene of inflating tritium, efficiency of dealing waste tritium gas system reaches above 85% in circulatory system. It can be used in practice extensively. (authors)

[en] Objective: To investigate the changes of plasma neuropeptides (β-EP.NT.NPY) levels in patients with acute cerebral infarction and the clinical efficacy of Naloxone. Methods: (1) The concentration of these neuropeptides were measured on the 1st, 3rd, 7th, 14th day after the onset of disease with RIA in 38 patients with acute cerebral infarction and 66 controls. (2) 38 cases of acute cerebral infarction were randomly divided into treatment groups: Naloxone and Xue shuan tong. The concentration of these neuropeptides in the two groups were compared with each other and clinical efficacy of Naloxone was observed. Results: (1) Plasma β-EP. NT and NPY levels in the patients with acute cerebral infarction were significantly higher than those in control (F=46.66, p=0.00<0.01; F=6.031, p=0.000<0.01; F=29.675, p<0.01). The levels were highest at the onset and approaching normal on the 14th day. (2) The plasma β-EP levels at 3rd and 7th days in the Naloxone group were significantly higher than those in the Xue shuan tong group (p<0.05, p<0.01 respectively). For NT and NPY levels, there were no significant differences. Clinical result of treatment was much better with Naloxone than Xue shuan tong group. Conclusion: The plasma neuropeptide levels (β-EP.NT.NPY) were closely related to the pathogenesis of acute cerebral infarction and might be very useful in the clinical treatment of the diseases. Naloxone could effectively resist β-EP and reduce hydrocephalus and improve the convalescence of acute cerebral infarction

[en] An integrated container performance parameter testing device is developed for the packaging container with metal as material. It is suitable for the comprehensive performance test of the metal packaging container, and can realize the rapid and accurate measurement of the volume, sealing, vacuum degree and pressure strength of the metal packing container. This paper introduces the working principle, hardware structure, software system and testing function of the device. The hardware system is composed of differential pressure sensor, absolute pressure sensor, temperature sensor, mass flow controller and USB-2611 high speed acquisition card. The application program of data acquisition and processing based on LabVIEW is designed. This system can realize the function of collecting, storing, real-time displaying and processing analysis. The experimental results show that the device can measure the volume, sealing, vacuum and compressive strength of metal packaging container quickly and accurately. (paper)

[en] Copper has been introduced in CdTe solar cell manufacturing for a long time and is critical for achieving high performance devices. In this work, CuCl thin films were prepared by vacuum thermal deposition and then used as a buffer layer with a thermal annealing treatment for activation in the CdTe solar cells. The results indicate that Cu and Cl diffused into the CdTe absorber which was beneficial for doping and copassivation. The carrier density for CdTe solar cells in the vicinity of the pn junction was significantly improved from 6.1 × 10¹³ to 4.3 × 10¹⁴ cm⁻³_, and V_oc was increased by >70 mV. The cell with the CuCl thin films was more uniform and revealed higher photocurrent response than the reference cell. The results also indicate that the formation of ohmic back contacts to CdTe solar cells due to the presence of the Cu_xTe (Cu₇Te₄) thin films. An optimal device with open circuit voltage of ~820 mV, and fill factor of ~72% and efficiency reaching 16.69% was obtained by the control of the copper concentration and the thermal activation conditions of the CuCl buffer layer.

[en] The electron energy distribution function (EEDF), predicted by the Boltzmann equation solver BOLSIG+ based on the two-term approximation, is introduced into the fluid model for simulating the high-power microwave (HPM) breakdown in argon, nitrogen, and air, and its validity is examined by comparing with the results of particle-in-cell Monte Carlo collision (PIC/MCC) simulations as well as the experimental data. Numerical results show that, the breakdown time of the fluid model with the Maxwellian EEDF matches that of the PIC/MCC simulations in nitrogen; however, in argon under high pressures, the results from the Maxwellian EEDF were poor. This is due to an overestimation of the energy tail of the Maxwellian EEDF in argon breakdown. The prediction of the fluid model with the BOLSIG+ EEDF, however, agrees very well with the PIC/MCC prediction in nitrogen and argon over a wide range of pressures. The accuracy of the fluid model with the BOLSIG+ EEDF is also verified by the experimental results of the air breakdown. (physics of gases, plasmas, and electric discharges)