AISI 5120 steel, which underwent 30 min single-surface nanocrystallization via supersonic fine particle bombarding (SFPB), was pre-boronized at 600 °C for 2 h, and then final-boronized 800 or 900 2–6 i.e., two-step pack-boronizing. The specimens’ microstructure mechanical characteristics before after boronizing were examined in detail. results showed that the hardness of SFPB surface reached 57...

In this study, we propose a two-step framework to predict the implied volatility surface (IVS) in manner that excludes static arbitrage. First, select features represent and them. Second, use predicted construct IVS using deep neural network (DNN) model by incorporating constraints can prevent We consider three methods extract from data: principal component analysis, variational autoencoder, sa...

The present review covers organic transformations involved in the reduction of CO2 to chemical fuels. In particular, we focus on reactions of CO2 with organic molecules to yield carboxylic acid derivatives as a first step in CO2 reduction reaction sequences. These biomimetic initial steps create opportunities for tandem electrochemical/chemical reductions. We draw parallels between long-standin...

This paper presents two models typical of two different approaches often used for modelling the advective-dispersive transport of multiple ions in variably-saturated porous media. The first approach assumes that all solute reactions can be incorporated directly into the governing transport equations (the one-step method), while the second approach divides the mathematical solution process into ...

A two-step reaction scheme for the production of extremely neutron-rich radioactive beams, fission followed by cold fragmentation, is considered. The cross sections of the second step, the cold fragmentation of neutron-rich fission fragments, are estimated with different computer codes. Discrepancies between an empirical systematics and nuclear-reaction codes are found. PACS: 25.40.Sc Spallatio...

The accurate determination of the rate constant related to electron transfer step so-called “surface redox active compounds” by voltammetric measurements is very important because it linked reactivity and stability many biological chemical systems such as enzymes, vitamins, hormones, more. Evaluation kinetics often challenging, especially when equilibria are coupled step. In this work, we theor...

At oxic/anoxic transition zones, manganese release from (hydr)oxide minerals into aqueous solution is a dynamic balance between mineral dissolution and Mn2+(aq) oxidation and precipitation, which are processes respectively promoted by organic reductants and molecular oxygen. We employ a flow-through atomic force microscope reactor (AFM-R) to investigate the reductive dissolution of the [010] su...