Shotaro Nakayama
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View article: SiO2-supported niobia catalyst with optimized acid concentration prepared via organic additive-assisted impregnation protocol for the vapor-phase aldol condensation of butanal
SiO2-supported niobia catalyst with optimized acid concentration prepared via organic additive-assisted impregnation protocol for the vapor-phase aldol condensation of butanal Open
View article: Machine-learning-based data recovery and its contribution to seismic acquisition: Simultaneous application of deblending, trace reconstruction, and low-frequency extrapolation
Machine-learning-based data recovery and its contribution to seismic acquisition: Simultaneous application of deblending, trace reconstruction, and low-frequency extrapolation Open
Acquisition of incomplete data, i.e., blended, sparsely sampled, and narrowband data, allows for cost-effective and efficient field seismic operations. This strategy becomes technically acceptable, provided that a satisfactory recovery of …
View article: Optimization of blending and spatial sampling in seismic acquisition design
Optimization of blending and spatial sampling in seismic acquisition design Open
The quality and business aspects are both of particular importance in determining the type of seismic acquisition. Usually, a strong emphasis on cost reduction is inevitable. On the other hand, there is an increasing demand for the acquisi…
View article: Optimum seismic acquisition geometry design with the help of artificial intelligence
Optimum seismic acquisition geometry design with the help of artificial intelligence Open
Acquisition geometry design aims at finding the most affordable acquisition geometry that satisfies the objectives of the seismic survey. The parameters of an acquisition geometry can be specified in terms of the number of sources and dete…
View article: Blended acquisition with temporally signatured/modulated and spatially dispersed source array
Blended acquisition with temporally signatured/modulated and spatially dispersed source array Open
We introduce a blended-acquisition method: temporally signatured and/or modulated and spatially dispersed source array, namely S-/M-DSA. The former S-DSA has much less constraints in the encoding with operational flexibility, allowing non-…
View article: Acquisition design for direct reflectivity and velocity estimation from blended and irregularly sampled data
Acquisition design for direct reflectivity and velocity estimation from blended and irregularly sampled data Open
Blended acquisition along with efficient spatial sampling is capable of providing high‐quality seismic data in a cost‐effective and productive manner. While deblending and data reconstruction conventionally accompany this way of data acqui…
View article: Experimental and theoretical progress in time-resolved (e, 2e) electron momentum spectroscopy of photodissociation dynamics of acetone at 195 nm
Experimental and theoretical progress in time-resolved (e, 2e) electron momentum spectroscopy of photodissociation dynamics of acetone at 195 nm Open
We report on experimental and theoretical progress in time-resolved (e, 2e) electron momentum spectroscopy of photodissociation dynamics of the deuterated acetone molecule at 195 nm. Experimentally, we are conducting a series of measuremen…
View article: Innovative Processing Approaches to Overcome Sampling Sparseness and Irregularity in 3D OBC Seismic Data Offshore Abu Dhabi
Innovative Processing Approaches to Overcome Sampling Sparseness and Irregularity in 3D OBC Seismic Data Offshore Abu Dhabi Open
Due mainly to commercial and operational constraints, seismic data are often sparsely and irregularly sampled, leading to several challenges in processing of 3D OBC seismic data offshore Abu Dhabi.Conventional linear noise attenuation tech…