Results 51 to 60 of about 216,293 (272)

Mechanistic Insights Into Cellulose Dissolution in Solvents for Advanced Industrial Applications: A Systematic and Bibliometric Review

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Cellulose dissolution is important for various industries, including textiles, bioplastics, foods and pharmaceuticals, yet achieving efficient dissolution remains challenging. Deep eutectic solvents (DES) have emerged as promising alternatives to traditional solvents due to their low toxicity, biodegradability and sustainability.
Chigozie Charity Okwuwa   +4 more
wiley   +1 more source

Process for purification of waste water produced by a Kraft process pulp and paper mill [PDF]

open access: yes, 1979
The water from paper and pulp wastes obtained from a mill using the Kraft process is purified by precipitating lignins and lignin derivatives from the waste stream with quaternary ammonium compounds, removing other impurities by activated carbon produced
Humphrey, M. F.
core   +1 more source

KELT-7b: A hot Jupiter transiting a bright V=8.54 rapidly rotating F-star [PDF]

open access: yes, 2015
We report the discovery of KELT-7b, a transiting hot Jupiter with a mass of $1.28 \pm 0.18$ MJ, radius of $1.53_{-0.047}^{+0.046}$ RJ, and an orbital period of $2.7347749 \pm 0.0000039$ days.
Beatty, Thomas G.   +33 more
core   +5 more sources

Influence of Botanical Origin on the Optical, Surface, and Nanomechanical Properties of Nanocellulose‐Based Films: A Comparative Study

open access: yesJournal of Applied Polymer Science, EarlyView.
Schematic representation of the processing and multiscale characterization of nanocellulose films from different botanical sources. ABSTRACT Although the influence of botanical origin on nanocellulose properties is well recognized, an integrated multiscale framework linking chemical composition, fractal surface descriptors, and nanomechanical behavior ...
Márcia da Silva Costa   +9 more
wiley   +1 more source

Determination of optimum Refining of paper made of recovered Kraft liner [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2008
This study has been performed in order to determination of optimum refining of paper made of recovered Kraft liner. Recovered Kraft liner has been prepared from anzali city.
Hamid Noori chaparprdy   +3 more
doaj   +1 more source

Quiver Subtractions

open access: yes, 2018
We study the vacuum structure of gauge theories with eight supercharges. It has been recently discovered that in the Higgs branch of $5d$ and $6d$ SQCD theories with eight supercharges, the new massless states, arising when the gauge coupling is taken to
Cabrera, Santiago, Hanany, Amihay
core   +1 more source

Why do people choose to enter and exit the teaching profession? An interdisciplinary quantitative synthesis

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Many nations experience recurring shortages of teachers in particular subjects, prompting concerns that pupils' education is suffering as a result. Researchers have responded by generating a sizable literature on the reasons for which people enter and exit the teaching profession.
Sam Sims   +2 more
wiley   +1 more source

Optimization of Cellulose-Based Kraft Paper from Gigantochloa levis Bamboo: Physicochemical, Mechanical, and Thermal Properties for Sustainable Packaging Applications

open access: yesJournal of Natural Fibers
This study optimizes and characterizes the kraft pulping process for Gigantochloa levis (GL), a native Malaysian bamboo species, to evaluate its potential as a sustainable feedstock for pulp and paper production. Optimization was performed using response
Husain Siti nor Hawanis   +8 more
doaj   +1 more source

Stripped elliptical galaxies as probes of ICM physics : III. Deep Chandra observation of NGC 4552 - Measuring the viscosity of the intracluster medium [PDF]

open access: yes, 2017
We present results from a deep (200 ks) Chandra observation of the early-type galaxy NGC 4552 (M89) which is falling into the Virgo cluster. Previous shallower X-ray observations of this galaxy showed a remnant gas core, a tail to the South of the galaxy,
Churazov, E.   +9 more
core   +2 more sources

Understanding the paradox of primary teacher shortage in low‐income countries: Insights from Malawi

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Malawi faces a persistent and chronic teacher shortage, particularly at the primary school level, with much of the challenge attributed to teacher supply constraints. While the causes of teacher shortages are known to be complex and context‐dependent, there remains a lack of in‐depth, country‐specific research to guide effective policies ...
Peter Mtika, Edward M. Sosu
wiley   +1 more source

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