Results 11 to 20 of about 19,790 (235)

A Versatile Method for Determination of Resin Acids in Occupational Softwood Sawmill Dust Samples by Liquid Chromatography-Atmospheric Pressure Chemical Ionization-Mass Spectrometry. [PDF]

open access: yesJ Sep Sci
A versatile, rapid, robust, sensitive, and selective liquid chromatography‐atmospheric pressure chemical ionization‐mass spectrometry method for determining resin acids in wood dust. The method improves isomer resolution compared to previous methods, has minimal sample preparation and a short (15 min) runtime, enabling routine occupational exposure ...
Olsen R, Bakke I.
europepmc   +2 more sources

Full Scale Evaluation of GFRP Confined Softwood after Long-Term Exposure to High Humidity Environment [PDF]

open access: yes, 2023
Plantation softwood timber poles are associated with low natural durability, and it is also not clear what the effects of the high humidity environment on the long-term performance of composite action integrity of such a system.
Ahmed D. Almutairi   +11 more
core   +1 more source

Transformative Masked Ortho-Quinone Chemistry: From Direct Guaiacol Activation to Lignin-Based Adhesives. [PDF]

open access: yesAngew Chem Int Ed Engl
Renewable guaiacols are rapidly oxidized by phenyliodine(III)diacetate to masked ortho‐quinones, giving a new class of monomers that undergo selective Michael‐type polyaddition with multithiols to from thiol‐guaiacol connectivity‐bearing polymers. The activation applies to discrete monomers and directly to lignin, enabling two‐component adhesives that ...
Hoch DP   +7 more
europepmc   +2 more sources

Effect of Fibre Orientation on the Bond Properties of Softwood and Hardwood Interfaces

open access: yesBuildings, 2023
Increasing concerns regarding carbon emissions and climate change are prompting a shift toward the use of sustainable materials in the construction industry.
Xin Li   +3 more
doaj   +1 more source

Effect of bolt configurations on stiffness for steel-wood-steel connection loaded parallel to grain for softwoods in Malaysia [PDF]

open access: yesArchives of Civil Engineering, 2022
Steel-wood-steel connection is widely seen in many applications, such as timber structures. The stiffness of steel-wood-steel connection loaded parallel to grain for softwoods originated from Malaysia was investigated in this study. Numerical models have
Nur Liza Rahim   +5 more
doaj   +1 more source

PROPAGATION OF SELECTED CLEMATIS L. CULTIVARS BY SOFTWOOD CUTTINGS

open access: yesAgricultura, 2009
The goal of the experiments carried out was to compare the rooting ability of two types of softwood cuttings. Nodal softwood cuttings with two leaves were used and bud cuttings with one leaf.
M. Raček, B. Kertász
doaj   +1 more source

Effect of Cultivars and Season on Grafting Success in Sapota under Paschim Midnapur Conditions of West Bengal

open access: yesJournal of Horticultural Sciences, 2010
Two sets of experiments were carried out during 2007-08 to assess incompatibility of sapota cultivars to softwood grafting, and to find out the best time for softwood grafting, in a private orchard at Jhargram of Paschim Midnapore, West Bengal ...
S N Ghosh, B Bera, s Roy, B C Banik
doaj   +1 more source

The Effect of Plant Source on the Properties of Lignin-Based Polyurethanes

open access: yesFrontiers in Energy Research, 2018
This work increases our understanding of the effect of plant source on the mechanical and morphological properties of lignin-based polyurethanes (PUs).
Jason M. Lang   +3 more
doaj   +1 more source

Electric Field Effect on the Thermal Decomposition and Co-combustion of Straw with Solid Fuel Pellets

open access: yesEnergies, 2019
The aim of this study was to provide more effective use of straw for energy production by co-firing wheat straw pellets with solid fuels (wood, peat pellets) under additional electric control of the combustion characteristics at thermo-chemical ...
Inesa Barmina   +6 more
doaj   +1 more source

Efficiency of Machine Sanding of Wood

open access: yesApplied Sciences, 2021
We hypothesized that the type of wood, in combination with the grit size of sandpapers, would affect sanding efficiency. Fixed factors were used in the experiment (a belt sander with pressure p = 3828 Pa, and a belt speed of vs = 14.5 m/s) as well as ...
Maciej Sydor   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy