[en] This article introduced a software which can help experimenter to operate the XI'AN Pulse Reactor(XAPR). This software provide some experiential formula to help the user to confirm some physical parameter of XAPR. The software has a friendly interface and is helpful for the experimenter. (authors)

[en] The standard comparison for Air Kerma of γ-rays with attendance of seven participants organized by the Metrology and Test station of Northwest Institute of Nuclear Technology in 2012 was introduced. According to existing conditions, each participating laboratory chose the ionization chamber of appropriate range to accomplish the comparison. The experiment data of comparison indicate that the deviations between measurement values and reference values are within the reasonable expectation, the results are considered satisfactory. (authors)

[en] Based on the merit and require of multipurpose experiment device for ²⁴¹Am-Be neutron source, the shielding calculation method suits multi-conductions of dose equivalent limit was established. After a comparative analysis to shielding plans by combinations of different multi-materials for shielding, the shielding parameter for the device was advanced, the rationality of the shielding design was verified and optimized using digital simulation by Monte Carlo method. (authors)

[en] Molybdenum disulfide (MoS${}_2$) based memristor presents intriguing chance for the implementation bio-inspired artificial synapse and neural interactions. However, the electrical properties of intrinsic MoS${}_2$ single-crystal film suffer from inevitable lattice defects or structure vacancies as well as restraining reliable resistive switching mechanism. Here, a fundamental study on tunable p-type doping in MoS${}_2$ film by controllable oxygen passivation is reported. In situ KPFM measurements reveal a near-linear increase in Fermi-level energy. The TiN/O-MoS${}_2$ memristor exhibits surprising bipolar switching feature, revealing an interesting transition between rectification-mediated and conduction-mediated characteristics by means of controllable surficial oxygen kinetics. The resistive window demonstrates nearly symmetric SET and RESET domain and capability to analog programming conductance. Moreover, based on the MoS${}_2$ memristor, the accuracy up to 94% for MINST recognition ensures the implementation of neural network and LTP/LTD behaviors. This as-prepared memristor is capable of mimicking synaptic feature through regulated resistive mechanics and electrode contact interaction, which can be an up-and-coming strategy for bio-realistic electronics. (© 2023 The Authors. Advanced Functional Materials published by Wiley‐VCH GmbH)

[en] Atomic composition tuning and defect engineering are effective strategies toenhance the catalytic performance of multicomponent catalysts by improvingthe synergetic effect; however, it remains challenging to dramatically tune the active sites on multicomponent materials through simultaneous defect engineeringat the atomic scale because of the similarities of the local environment. Herein,using the oxygen evolution reaction (OER) as a probe reaction, we deliberatelyintroduced base-soluble Zn(II) or Al(III) sites into NiFe layered double hydroxides(LDHs), which are one of the best OER catalysts. Then, the Zn(II) or Al(III) siteswere selectively etched to create atomic M(II)/M(III) defects, which dramaticallyenhanced the OER activity. At a current density of 20 mA·cm⁻², only 200 mV overpotential was required to generate M(II) defect-rich NiFe LDHs, which is the best NiFe-based OER catalyst reported to date. Density functional theory(DFT) calculations revealed that the creation of dangling Ni–Fe sites (i.e., unsaturated coordinated Ni–Fe sites) by defect engineering of a Ni–O–Fe site at the atomic scale efficiently lowers the Gibbs free energy of the oxygen evolutionprocess. This defect engineering strategy provides new insights into catalysts atthe atomic scale and should be beneficial for the design of a variety of catalysts. .