Results 71 to 80 of about 25,938 (258)

Reading hominin life history in fossil bones and teeth: methods to test hypotheses regarding its evolution

open access: yesBiological Reviews, EarlyView.
ABSTRACT Human life history is derived compared to that of our closest living relatives, the great apes. It has been suggested that these derived traits are causally related to aspects of our ecology, social behaviour and cognitive abilities. However, resolving this requires that we know the evolutionary trajectory of our distinctive pattern of growth,
Paola Cerrito   +2 more
wiley   +1 more source

Control of Dioxins From the Pulp and Paper Industry Under the Clean Water Act and Lead in Soil at Superfund Mining Sites: Two Case Studies in EPA's Use of Science [PDF]

open access: yes
This paper discusses EPA's acquisition and use of science in addressing dioxins (and other organochlorines) from the pulp and paper industry under the Clean Water Act and lead in soil at large Superfund mining sites.
Powell, Mark
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An \u3cem\u3eIn Vitro\u3c/em\u3e Spectroscopic Analysis to Determine the Chemical Composition of the Precipitate Formed by Mixing Sodium Hypochlorite and Chlorhexidine [PDF]

open access: yes, 2011
Introduction—The purpose of this in vitro study was to determine the chemical composition of the precipitate formed by mixing sodium hypochlorite (NaOCl) and Chlorhexidine (CHX), and relative molecular weight of the components. Methods—Using commercially
Nowicki, James B., Sem, Daniel S.
core   +1 more source

Purification of cellulosic pulp by hot water extraction [PDF]

open access: yes, 2016
Hot water extraction (HWE) of pulp in a flow-through reactor was evaluated as a method to purify paper-grade pulps. About 50–80 % of the xylan and up to 50 % of the lignin in unbleached birch Kraft pulp was extracted by the HWE without losses in ...
Borrega Sabate, Marc, Sixta, Herbert
core   +1 more source

Beyond Profit: Do Mergers and Acquisitions and the Board of Directors Increase the Environmental, Social, and Governance?

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines the relationship between mergers and acquisitions (M&A), board characteristics, and ESG performance in BRICS companies, considering the moderating role of sectoral sensitivity. The study analyzes 11,402 observations from 2293 BRICS companies, employing Two‐Stage Least Squares (2SLS) to address endogeneity and logistic ...
Geovane Camilo dos Santos   +2 more
wiley   +1 more source

Enhancing dissolving pulp quality of mixed raw materials through pre-hydrolysis kraft-cooking: A study on Acacia crassicarpa and Terminalia catappa

open access: yesCommunications in Science and Technology
Acacia crassicarpa wood is widely used in Indonesia as a raw material for dissolving pulp (DP) by the kraft-cooking process. Given that Indonesia has a rich variety and abundance of cellulose-rich wood, it is deemed crucial to research alternative raw ...
Yusnimar Sahan   +7 more
doaj   +1 more source

Development of a co‐culture of Ureibacillus thermosphaericus and Cupriavidus taiwanensis for inhibitors removal from hemicellulose prehydrolysate

open access: yesBiotechnology Progress, EarlyView.
For biofuels production, hemicellulose pre‐hydrolysate is considered as an attractive feedstock rich in fermentable sugars. The pre‐hydrolysate derived from lignocellulosic biomass comprises, along with sugars, several inhibitors which can hamper its efficient conversion.
Mariem Theiri   +3 more
wiley   +1 more source

Effect of different combinations of papain-based gels on dissolving pulp tissue

open access: yesBioscience Journal, 2017
The focus of this study was to evaluate the capacity to dissolve pulp tissue of various combinations of papain-based gels and other antimicrobial agents.
Matheus Melo Pithon   +6 more
doaj   +3 more sources

Effect of Boric Acid Addition on the Prehydrolysis of Whangee

open access: yesBioResources, 2016
Prehydrolysis is an important step in the kraft-based dissolving process for pulp production, as it helps remove as much hemicellulose as possible from cellulose fibers before the material is subjected to the main delignification operation, i.e., pulping.
Ruiping Tong   +3 more
doaj   +1 more source

Substituting Wood with Nonwood Fibers in Papermaking: A Win-Win Solution for Bangladesh [PDF]

open access: yes
Bangladesh is facing an acute shortage of fibrous raw materials for the production of pulp and paper. On the other hand, the demand for paper and paper products is increasing day by day.
A. F. M. Ataur Rahman   +2 more
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