ARGET ATRP of Methacrylates and Acrylates with Stoichiometric Ratios of Ligand to Copper

2008 ◽  
Vol 209 (17) ◽  
pp. 1797-1805 ◽  
Author(s):  
Nicky Chan ◽  
Michael F. Cunningham ◽  
Robin A. Hutchinson
Keyword(s):  
Arget Atrp ◽  
Stoichiometric Ratios

ARGET ATRP of Methacrylates and Acrylates with Stoichiometric Ratios of Ligand to Copper

2008 ◽  
Vol 209 (18) ◽  
pp. 1949-1949 ◽  
Author(s):  
Nicky Chan ◽  
Michael F. Cunningham ◽  
Robin A. Hutchinson
Keyword(s):  
Arget Atrp ◽  
Stoichiometric Ratios

scholarly journals Nutrient and Stoichiometric Characteristics of Aggregates in a Sloping Farmland Area under Different Tillage Practices

2021 ◽  
Vol 13 (2) ◽  
pp. 890
Author(s):  
Jie Zhang ◽  
Yaojun Liu ◽  
Taihui Zheng ◽  
Xiaomin Zhao ◽  
Hongguang Liu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Size Distribution ◽  
Soil Aggregates ◽  
Soil Aggregate ◽  
Elemental Content ◽  
Stoichiometric Ratio ◽  
Longitudinal Ridge ◽  
Stoichiometric Ratios ◽  
Sloping Farmland ◽  
Ridge Tillage

Sloping farmland is prevalent in hilly red soil areas of South China. Improper tillage patterns induce decreased soil organic matter, soil aggregate breakdown, and nutrient imbalance, thereby restricting crop production. However, the stoichiometric characteristics could reflect the nutrient availability which was mostly studied on bulk soil. The stoichiometric characteristics of soil aggregates with multiple functions in farmlands has rarely been studied. The study was to reveal the impact of tillage patterns on the size distribution, nutrient levels, and stoichiometric ratios of soil aggregates after 20 years’ cultivation. Soil samples of 0–20 cm and 20–40 cm from five tillage patterns, bare-land control (BL), longitudinal-ridge tillage (LR), conventional tillage + straw mulching (CS), cross-ridge tillage (CR), and longitudinal-ridge tillage + hedgerows (LH) were collected. The elemental content (C, N and P) and soil aggregate size distribution were determined, and the stoichiometric ratios were subsequently calculated. Through our analysis and study, it was found that the nutrient content of >2 mm soil aggregates in all plots was the highest. In the hedgerow plots, >2 mm water-stable soil aggregate content was increased. Therefore, LH plots have the highest content of organic matter and nutrients. After 20 years of cultivation, stoichiometric ratio of each plot showed different changes on soil aggregates at different levels. the C:N, C:P, and N:P ratios are lower than the national average of cultivated land. Among of them, the stoichiometric ratio in the LH plot is closer to the mean and showed better water-stable aggregate enhancement. Therefore, longitudinal-ridge tillage + hedgerows can be recommended as a cultivation measure. This study provides a reference for determining appropriate tillage measures, balancing nutrient ratios, and implementing rational fertilization.

scholarly journals A Cu(ii) metal–organic framework as a recyclable catalyst for ARGET ATRP

2016 ◽  
Vol 7 (47) ◽  
pp. 7199-7203 ◽  
Author(s):  
Hui-Chun Lee ◽  
Markus Antonietti ◽  
Bernhard V. K. J. Schmidt
Keyword(s):  
Electron Transfer ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Metal Organic Framework ◽  
Recyclable Catalyst ◽  
Atom Transfer ◽  
Arget Atrp ◽  
Metal Organic ◽  
Organic Framework

A Cu(ii) MOF can serve as an comprehensive catalyst for activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) in the synthesis of benzyl methacrylate, styrene, isoprene and 4-vinylpyridine.

scholarly journals Carbide Synthesis from Graphite/molybdenum Powder Mixtures at Sub-Stoichiometric Ratios under Solar Radiation Heating to 1900°C

2008 ◽  
Vol 49 (11) ◽  
pp. 2673-2678 ◽  
Author(s):  
Bernard Granier ◽  
Jean-Marie Badie ◽  
Fernando Almeida Costa Oliveira ◽  
Teresa Magalhães ◽  
Nobumitsu Shohoji ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Molybdenum Powder ◽  
Radiation Heating ◽  
Powder Mixtures ◽  
Stoichiometric Ratios

Copper-catalyzed ARGET ATRP of styrene from ethyl α-haloisobutyrate in EtOAc/EtOH, using ascorbic acid/Na2CO3 as reducing system

2021 ◽  
pp. 110675
Author(s):  
Marco Borsari ◽  
Niccolò Braidi ◽  
Mirko Buffagni ◽  
Franco Ghelfi ◽  
Francesca Parenti ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Arget Atrp

scholarly journals How Elemental Stoichiometric Ratios in Microorganisms Respond to Thinning Management in Larix principis-rupprechtti Mayr. Plantations of the Warm Temperate Zone in China

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 684
Author(s):  
Mengke Cai ◽  
Shiping Xing ◽  
Xiaoqing Cheng ◽  
Li Liu ◽  
Xinhao Peng ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Temperature ◽  
Microbial Communities ◽  
Microbial Biomass Carbon ◽  
Gram Negative Bacteria ◽  
Medium Density ◽  
Biomass Carbon ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Stoichiometric Ratios

The stoichiometric ratios of elements in microorganisms play an important role in biogeochemical cycling and evaluating the nutritional limits of microbial growth, but the effects of thinning treatment on the stoichiometric ratio of carbon, nitrogen, and phosphorus in microorganisms remain unclear. We conducted research in a Larix principis-rupprechtti Mayr. plantation to determine the main factors driving microbial carbon (C): nitrogen (N): phosphorus (P) stoichiometry following thinning and the underlying mechanisms of these effects. The plantation study varied in thinning intensity from 0% tree removal (control), 15% tree reduction (high density plantation, HDP), 35% tree reduction (medium density plantation, MDP), and 50% tree reduction (low density plantation, LDP). Our results indicated that medium density plantation significantly increased litter layer biomass, soil temperature, and other soil properties (e.g., soil moisture and nutrient contents). Understory vegetation diversity (i.e., shrub layer and herb layer) was highest in the medium density plantation. Meanwhile, thinning had a great influence on the biomass of microbial communities. For example, the concentration of phospholipid fatty acids (PLFA) for bacteria and fungi in the medium density plantation (MDP) was significantly higher than in other thinning treatments. Combining Pearson correlation analysis, regression modeling, and stepwise regression demonstrated that the alteration of the microbial biomass carbon: nitrogen was primarily related to gram-positive bacteria, gram-negative bacteria, soil temperature, and soil available phosphorus. Variation in bacteria, actinomycetes, gram-positive bacteria, gram–negative bacteria, and soil total phosphorus was primarily associated with shifts in microbial biomass carbon: phosphorus. Moreover, changes in microbial biomass nitrogen: phosphorus were regulated by actinomycetes, gram-negative bacteria, and soil temperature. In conclusion, our research indicates that the stoichiometric ratios of elements in microorganisms could be influenced by thinning management, and emphasizes the importance of soil factors and microbial communities in driving soil microbial stoichiometry.

Preparation of LCST regulable DES-lignin-g-PNVCL thermo-responsive polymer by ARGET-ATRP

2021 ◽  
Author(s):  
Ruixia Liu ◽  
Tingting Ding ◽  
Pingping Deng ◽  
Xiaofan Yan ◽  
Fuquan Xiong ◽  
...  
Keyword(s):  
Responsive Polymer ◽  
Arget Atrp

scholarly journals Corrigendum: Control of cationic nanogel PEGylation in heterogeneous ARGET ATRP emulsion polymerization with PEG macromonomers

2018 ◽  
Vol 57 (5) ◽  
pp. 648-648
Author(s):  
David S. Spencer ◽  
Bryan C. Luu ◽  
David W. Beckman ◽  
Nicholas A. Peppas
Keyword(s):  
Emulsion Polymerization ◽  
Arget Atrp

scholarly journals ARGET ATRP of Triblock Copolymers (PMMA-b-PEO-b-PMMA) and Their Microstructure in Aqueous Solution

ACS Omega ◽  
2018 ◽  
Vol 3 (11) ◽  
pp. 15996-16004 ◽  
Author(s):  
Qun Lei ◽  
Baoliang Peng ◽  
Kris King Yiu Ma ◽  
Zhen Zhang ◽  
Xiaocong Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Triblock Copolymers ◽  
Arget Atrp
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