Materials Literature
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A compact log-periodic antenna based on Spoof surface plasmon polaritons(SSPPs) is proposed in this work. The antenna consists of three part: the microstrip line, the SSPPs conversion part, and radiation part. The SSPPs structure generates surface waves, which are eventually radiated by dipoles acting as radiators. Th…
In this paper, a circularly polarized microstrip antenna loaded with a polarization conversion metasurface(PCM) is presented , whose unit cell is composed of a double-head arrow-shaped metal film mounted on the single side of a FR-4 substrate. The radiating element of the antenna is a modified T-shaped metal patch. Si…
Abstract A proper treatment of thermal neutron scattering data is required for the high-fidelity neutronics calculation of thermal reactors. Monte Carlo codes typically use an S(α, β) treatment to describe scattering events in the thermal region if the S(α, β) data is available for the material. The S(α,β) model store…
Abstract The purpose of this study is to develop a finite element model that accurately describes the buckling behavior of a spacer grid. The spacer grid is the most important component of a nuclear fuel assembly and supports the fuel rod with a structurally sufficient buckling strength. Therefore, the development of…
Abstract In decommissioning sodium-cooled fast reactors, the operators can be exposed to radiation during dismantling of cold trap equipment (C/T). The C/T is higher dose equipment because the C/T trapped tritium of fission products during the operation to purify the sodium coolant. In this study, thermal decompositio…
Abstract In-Vessel Core Melt Retention (IVMR) strategy via external vessel cooling is widely applied for reactors of relatively low power like VVER-440. In this study, IVMR strategy was applied for Rivne-1, 2 units to prove the pressure vessel integrity. Based on initial data like heat flux for internal wall and exter…
Abstract The work presented in this paper presents new techniques for modeling the combined use of the Reactor Core Isolation Cooling (RCIC) System and Accident Tolerant Fuel (ATF) in a Boiling Water Reactor (BWR). With guidance from Sandia National Laboratories’ Severe Accident Analysis department, a MELCOR BWR model…
Abstract Irradiation hardening is one of the most important aging effects of reactor pressure vessel (RPV) steel in long-term service. A number of studies have indicated that irradiation hardening is mainly caused by irradiation induced defects, such as dislocation loops and precipitates. In this paper, we have simula…
Abstract Quenching is an important phenomenon in the evaluation of an emergency core cooling system following a hypothetical loss of coolant accident (LOCA) in a nuclear reactor. In the present study, an experimental apparatus is designed and constructed with the purpose of conducting high-temperature transient pool b…
Abstract The production of reliable, stable, and durable breeder blanket material is one of the most important open challenge of fusion reactor technology. A new low temperature fabrication method for producing lithium orthosilicate (Li4SiO4) pebbles based on the drip casting was developed at DICI - University of Pisa…
Abstract In the decommissioning of nuclear power plants (NPP), we can greatly reduce the amount of low-level waste (LLW) by decontamination process. Generally, chemical decontamination method that use chemical solutions to dissolve the deposited waste is major way of decontamination. But this method takes a lot of tim…
Abstract In the management of severe accident of nuclear reactor, the pressure relief of reactor coolant system (RCS) is an important mitigation measure to prevent high pressure core melt (HPCM). In the safety system improvement of Tianwan56 nuclear power plant, the optimization measure of adding the dedicated pressur…
Abstract The Fukushima nuclear accident in Japan caused a significant impact on the nuclear power industry and public attitudes towards nuclear energy. The decreased public acceptance and the regulatory authorities’ stricter requirements of nuclear safety lead to the popularity of advanced safety technologies in scien…
An ultrastable silver nanocluster was synthesized by K. Yamaguchi, K. Suzuki et al. in their Communication on page 16361 by using lacunary polyoxometalates. In the cover picture, the green polyhedra represent lacunary polyoxometalates and the light gray spheres silver atoms. While small silver nanoclusters are typical…
The paper presents an analytical study for comparing different numerical methods used for the modeling of cutting process using finite element method. The aims of this study is to compare capabilities of FE software package (Deform, AdvantEdge, ANSYS Workbench and ABAQUS). The main stages of modeling are discussed, as…
The synthesis of 5,15-diphenyl-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphyrin and its nitro substituted was carried out. Nitro groups are located in meso-positions of the tetrapyrrole macrocycle and (or) para-positions of the phenyl rings. The synthesized porphyrins are characterized by a set of modern research m…
Gelatin is a simple protein obtained from the partial hydrolysis of collagen from the skin, bones, joints and connective tissue of animals. One potential material for the manufacture of gelatin is fish bone milkfish (Chanos chanos). Gelatin derived from fish bones with acid process is able to change the triple helix c…
Echinoderm symmetry is analysed by means of concepts used in crystallography. This analysis is applied to pelmatazoan echinoderms, and it is shown that for the majority of pelmatozoans, the most efficient organization for passive suspension feeding is pentamerous. This result is used in speculation about the ancestors…
Abstract Carbon‐based supercapacitors are a kind of supercapacitors with very promising applications because of their low cost, good stability and adjustable properties. Simple and rapid syntheses of carbon materials with a high surface area and narrow pore size distribution are of great significance to practical appl…
Abstract We report on the high temperature Seebeck coefficient, conduction mechanism and room temperature work function of LiMn 1.5 Ni 0.5 O 4 thin film prepared using the radio frequency sputtering technique. Cubic spinel LiMn 1.5 Ni 0.5 O 4 thin film exhibits a room temperature average work function value of 4.94 eV…