Results 61 to 70 of about 23,645 (231)

Composites of kraft lignin

open access: yes, 2022
Many materials, man-made and natural, have a composite structure, i.e. they comprise two or more constituent materials with distinct differences. Concrete is a common example. It consists of sand or gravel, cement and water. Wood is also a composite. It has strong, crystalline cellulose structures glued together by hemicelluloses and lignin. The unique
Nättinen Kalle   +2 more
openaire   +1 more source

Electrical Breakdown Analysis of Emerging Oil–Paper Insulation Systems

open access: yesHigh Voltage, EarlyView.
ABSTRACT This investigation addresses the effect of particulate additives on the electrical breakdown strength of the oil impregnated insulation paper system. The morphological complexity is addressed by converting data from scanning electron microscope images to a data set suitable for numerical simulation analysis. Then, by using the conventional oil‐
Yue Xu   +9 more
wiley   +1 more source

The Influence of Cellulose, Lignins, and Organic Compounds on Biochemical Oxygen Demand [PDF]

open access: yes, 1963
Biochemical Oxygen Demand (B.O.D. as it is commonly called) is the oxygen, in parts per million, required during stabilization of the decomposable organic matter by aerobic bacterial action.
Phenicie, Dale
core   +1 more source

Can Wapiti (Cervus elaphus) Browsing Stimulate the Chemical Defense of Taxus cuspidata—A Case of Northeast China Tiger and Leopard National Park

open access: yesIntegrative Zoology, EarlyView.
We study that browsing by wapiti reduces the growth of saplings, and it develop chemical defenses to prevent themselves browsed again. These results reduce our concern about wapiti browse T. cuspidate saplings, and provide basic data for the study of the interaction between them, and also provide theoretical basis for the population restoration and ...
Jianan Feng   +3 more
wiley   +1 more source

Management of the Rice Tungro Virus Vector \u3ci\u3eNephotettix virescens\u3c/i\u3e (Homoptera: Cicadellidae) with Controlled-Release Formulations of Carbofuran [PDF]

open access: yes, 1984
Field trials were conducted in lowland flooded rice in the Philippines to evaluate a number of carbofuran controlled-release formulations in comparison with commercial formulations. The test formulations were based on a biodegradable matrix of pine kraft
Aquino, G. B.   +4 more
core   +1 more source

Root Structural and Metabolic Plasticity Confers Tolerance to Salinity in Wild Barley Species Grown Under Waterlogging

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Salinity combined with waterlogging is a major abiotic stress that severely limits crop growth and yield. We investigated species‐specific adaptations to salinity under constant waterlogging conditions in the wild halophytic barleys Hordeum marinum and H. glaucum, compared with the cultivated H. vulgare.
Stanislav Isayenkov   +10 more
wiley   +1 more source

Birch hardwood fibers with kraft lignin as peat substitutes: Effects on plant growth and rhizosphere microbiome

open access: yesScientia Horticulturae
Research on peat alternatives for horticultural growing media used in containerized plant production has gained interest due to greenhouse gas emissions linked to peat extraction and the resulting EU and German national goals. We evaluated birch hardwood
Bunlong Yim   +4 more
doaj   +1 more source

Thermal Characteristics of Lignin Residue from Industrial Processes

open access: yesBioResources, 2013
Many pulp mills and biorefineries today are focusing on the utilization of their residual lignin for economic return. Although lignin can be burned to produce energy, it also has the potential for the production of value-added products. Technical lignins
Sally Krigstin   +3 more
doaj   +1 more source

An Evaluation of Never-Dried Pulp at Multiple Freeness Levels [PDF]

open access: yes, 1998
Recycled paper is a viable and economical source of useful wood fiber for paper manufacture. Two of the largest contributors to today\u27s paper waste stream are Mixed-Office Waste (Softwood Kraft Pulp) and Newsprint (Stone Groundwood Pulp).
Liverance, Timothy Clifford
core   +1 more source

Influence of production variables and starting material on charcoal stable isotopic and molecular characteristics [PDF]

open access: yes, 2008
We present a systematic study on the effect of starting species, gas composition, temperature, particle size and duration of heating upon the molecular and stable isotope composition of high density (mangrove) and low density (pine) wood.
Alemany   +76 more
core   +1 more source

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