Results 161 to 170 of about 20,157 (236)

Delignification of softwood by ozonation

Pure and Applied Chemistry, 2009
Ozonation of aspen sawdust of various moisture content (MC) values was investigated. Ozone consumption corresponding to the completion of the ozonation process was shown to be governed by the wood MC. Cellulose-containing material of a low (1–3 %) residual lignin content (LC) was produced under ozonation. It is proposed that ozone dissolved in water is
Valery Lunin
exaly   +2 more sources

Introduction of eicosane into biochar derived from softwood and wheat straw: Influence of porous structure and surface chemistry

Chemical Engineering Journal, 2021
Thermal energy storage using phase change materials (PCMs) has received great attention in a wide range of smart applications. However, the development of shape-stabilized organic composite PCMs is a significant barrier to further advancement.
Dimberu G. Atinafu, Beom Yeol Yun, Young Uk Kim, Seunghwan Wi, Sumin Kim   +4 more
semanticscholar   +1 more source

Alkaline sulfonation and thermomechanical pulping pretreatment of softwood chips and pellets to enhance enzymatic hydrolysis

Bioresource Technology, 2020
To assess the impact of alkalinity on sulfonation and the enzyme-mediated hydrolysis of softwood cellulose, Lodgepole pine chips were impregnated with 8% sodium sulfite and increasing loadings of sodium carbonate before thermomechanical pulping.
Pablo G Del Rio, Chang Soo Kim, Scott Renneckar   +2 more
exaly   +2 more sources

Yeast Adaptation on Softwood Prehydrolysate

Applied Biochemistry and Biotechnology, 1998
Several strains and genera of yeast, including Saccharomyces cerevisiae D5A, Pachysolen tannophilus, S. cerevisiae K-1, Brettanomyces custersii, Candida shehatae, and Candida acidothermophilum, are screened for growth on dilute acid-pretreated softwood prehydrolysate.
F A, Keller, D, Bates, R, Ruiz, Q, Nguyen   +3 more
openaire   +2 more sources

Clonal Propagation of Softwoods

2005
Softwoods or gymnosperms, which make up 60% of the forested areas of the world, are economically important as a source of lumber, pulp, and paper. Reforestation is a major activity worldwide and the potential benefits of using clonal planting stock have long been recognized. Tissue culture clonal methods or micropropagation is a newer approach that can
Trevor A, Thorpe, Indra S, Harry, Edward C, Yeung   +2 more
openaire   +2 more sources

Solvent fractionation of softwood and hardwood kraft lignins for more efficient uses: Compositional, structural, thermal, antioxidant and adsorption properties

Industrial crops and products (Print), 2019
This work summarizes the impact of solvent fractionation on the chemical structure, antioxidant activity, heating values, and thermal and adsorption properties of industrial hardwood and softwood kraft lignins.
Ayumu Tagami, Claudio Gioia, M. Lauberts, Tetyana M. Budnyak, Rosana Moriana, Mikael E. Lindström, O. Sevastyanova   +6 more
semanticscholar   +1 more source

Quantitative glucose release from softwood after pretreatment with low-cost ionic liquids

Green Chemistry, 2019
Softwood is an abundantly available feedstock for the bio-based industry, however, achieving cost-effective sugar release is particularly challenging owing to its guaiacyl-only lignin.
Florence J. V. Gschwend, C. Chambon, M. Biedka, Agnieszka Brandt-Talbot, Paul S. Fennell, J. Hallett   +5 more
semanticscholar   +1 more source

Structural characteristics of different softwood lignins according to 1D and 2D NMR spectroscopy

, 2020
Along with cellulose, lignin is one of the most common polymers of plant origin. Numerous studies show that the complex and irregular structure of lignin is still unknown.
A. Faleva, A. Kozhevnikov, Sergey A Pokryshkin, D. Falev, S. Shestakov, J. A. Popova   +5 more
semanticscholar   +1 more source

Application of neural networks for classifying softwood species using near infrared spectroscopy

Journal of Near Infrared Spectroscopy, 2020
Lumber species identification is an important issue for the wood industry. In this study, three types of neural networks (artificial neural network (ANN), deep neural network (DNN), and convolutional neural network (CNN)) were employed for classifying ...
Sang-Yun Yang, O. Kwon, Yonggun Park, Hyunwoo Chung, Hyunbin Kim, Se-Yeong Park, I. Choi, Hwanmyeong Yeo   +7 more
semanticscholar   +1 more source

Sinonasal Cancer and Exposure to Softwood

Acta Oto-Laryngologica, 1985
In order to study the connection between occupation and sinonasal cancer we have reviewed the files and histological sections of 70 patients (24 females and 46 males) treated at the Department of Oto-rhino-laryngology, National Hospital of Norway. Detailed information concerning previous occupations was obtained by telephone interviews according to a ...
R, Voss, T, Stenersen, B, Roald Oppedal, M, Boysen   +3 more
openaire   +2 more sources