This review aimed to determine the current state of research on the growth conditions and
use pertaining to paulownia wood, mainly in European countries where paulownia has been …

The purpose of the study was to analyze the influence of the quality class and the orthotropy
of wood upon the sound absorption coefficient, the reflection and the impedance ratio of two …

Today, commercialized Hinoki cypress cubes are used for fragrance, humidification, and
pillows in Korea. In this study, the sound absorption ability of Hinoki cypress …

In this study, I used wood pellets as an eco-friendly sound-absorbing material. The aim of
the research was to analyze the effect of the filling height of wood pellets on sound …

The rational design of sound absorption boards made of wood materials is an exciting area
of research. This article describes a simple and inexpensive method to increase the sound …

This study aims to investigate the sound absorption ability of Acanthopanax senticosus
wastes as an eco-friendly sound-absorbing material. The sound absorption coefficient was …

Coconut wood (Cocos nucifera L.) is lightweight and has variable quality, making it a
potential candidate for manufacturing sound absorption boards. However, its sound …

This study investigated the prospect of using peanut shells as an alternative and green
sound-absorbing material. The sound-absorption coefficients were determined after filling …

This study examined the utility of pine (Pinus densiflora) pollen cones as an environmentally
friendly material with sound-absorbing properties. Pine pollen cone samples with widths of …

A new micro perforated sandwich panel with honeycomb-hierarchical pore structure core is
designed and prepared in this study. Carbonized cotton with hierarchical pore structure is …