Preparation and Characterization of Lignin-Containing Cellulose Nanofibril from Poplar High-Yield Pulp via TEMPO-Mediated Oxidation and Homogenization

2019 ◽  
Vol 7 (6) ◽  
pp. 6131-6139 ◽  
Author(s):  
Yangbing Wen ◽  
Zhaoyang Yuan ◽  
Xiongli Liu ◽  
Jialei Qu ◽  
Shuo Yang ◽  
...  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
M. H. Sanad ◽  
A. B. Farag ◽  
S. F. A. Rizvi

Abstract This study presents development and characterization of a radiotracer, [125I]iodonefiracetam ([125I]iodoNEF). Labeling with high yield and radiochemical purity was achieved through the formation of a [125I]iodoNEF radiotracer after investigating many factors like oxidizing agent content (chloramines-T (Ch-T)), substrate amount (Nefiracetam (NEF)), pH of reaction mixture, reaction time and temperature. Nefiracetam (NEF) is known as nootropic agent, acting as N-methyl-d-aspartic acid receptor ligand (NMDA). The radiolabeled compound was stable, and exhibited the logarithm of the partition coefficient (log p) value of [125I]iodonefiracetam as 1.85 (lipophilic). Biodistribution studies in normal mice confirmed the suitability of the [125I]iodoNEF radiotracer as a novel tracer for brain imaging. High uptake of 8.61 ± 0.14 percent injected dose/g organ was observed in mice


2001 ◽  
Vol 8 (5) ◽  
pp. 2257-2267 ◽  
Author(s):  
Michael E. Cuneo ◽  
Roger A. Vesey ◽  
John L. Porter ◽  
Gordon A. Chandler ◽  
David L. Fehl ◽  
...  

2005 ◽  
Vol 19 (12) ◽  
pp. 1215-1219 ◽  
Author(s):  
G. M. Mizanur Rahman ◽  
H. M. ‘Skip’ Kingston ◽  
Matt Pamukcu

ChemInform ◽  
2003 ◽  
Vol 34 (35) ◽  
Author(s):  
Markus Allmendinger ◽  
Philipp Zell ◽  
Amal Amin ◽  
Ulf Thewalt ◽  
Martti Klinga ◽  
...  

Author(s):  
Alex E. Roher ◽  
Kenneth C. Palmer ◽  
John Capodilupo ◽  
Arun R. Wakade ◽  
Melvyn J. Ball

ABSTRACT:Purification of amyloid plaque core proteins (APCP) from Alzheimer's disease brains to complete homogeneity and in high yield permitted its chemical fractionation and characterization of its components. APCP is mainly made of β-amyloid (βA) and an assortment of glycoproteins (accounting for 20%) rich in carbohydrates compatible with N-and O-linked saccharides. When added to tissue culture of sympathetic and sensory neurons APCP and βA inhibited neuritic sprouting, a reversible phenomenon at low doses. Higher concentrations of both substances kill the neurons in culture. APCP is significantly more toxic than βA, suggesting the minor components may play an important role in increasing the toxicity of βA. If the observed toxic effects of APCP in situ are occurring in vivo during the course of AD, then the accumulation of these extracellular proteins could be largely responsible for some of the neuronal death observed in this neuropathology.


2008 ◽  
Vol 62 (6-7) ◽  
pp. 914-917 ◽  
Author(s):  
Ping Ou ◽  
Gang Xu ◽  
Zhaohui Ren ◽  
Xiaohong Hou ◽  
Gaorong Han

Author(s):  
Blas Mola ◽  
Xiaoqian Xu ◽  
Oskar Englund ◽  
Ioannis Dimitriou

Research Highlights: (1) Reed canary grass (RCG) is analysed in Sweden compared to willow and poplar for 2001-2020 (2) Each crop presents a different land-use and climatic profile (3) Average yield records of reed canary grass are similar to willow and poplar (4) There are divergences between trial-based and commercial yields (5) Existing LUC patterns suggest meadow>RCG and RCG>cereal (6) RCG land area is very sensitive to policy incentives. Background and objectives: RCG is an alternative crop for biomass-to-energy due to high yield and frost tolerance. We assess the cultivation in Sweden by using an extensive compilation of data, with emphasis on the extension of the cultivation, areas planted, climatic profile, land use patterns and yield levels. Material and methods: All RCG plantations are analysed for 2001-2020. A geostatistical analysis is performed to characterize where is cultivated and the land uses associated. Climatic, productivity and yield profiles are compared to willow and poplar plantations, from experiments and from commercial plantations. Results: The results show that the cultivation of reed canary grass expanded after 2005, with a maximum of 800 ha in 2009 to then decrease to the current levels of about 550 ha. It is mainly grown in colder climatic areas, with lower agricultural productivity than willow and poplar. Mean yields from trials are 6 odt ha-1 yr-1; commercial yields are 3.5 odt ha-1 yr-1. RCG replace meadow land and is replaced by cereals, when abandoned. Conclusions: Reed canary grass is an interesting alternative, growing on colder areas but on similar yield levels than other energy crops. The cultivation is more sensitive to policy incentives


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