The removal of aqueous uranium by SBA-15 modified with phosphoramide: a combined experimental and DFT study

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 68695-68704 ◽  
Author(s):  
Yiming Ren ◽  
Ruizhu Yang ◽  
Lang Shao ◽  
Hao Tang ◽  
Shaofei Wang ◽  
...  
Keyword(s):  
Primary Amine ◽  
Dft Study ◽  
Phosphoryl Chloride ◽  
Step Process

Phosphoramide-modified SBA-15 materials were prepared via a two-step process involving: (1) the synthesis of phosphoramide via amidation of phosphoryl chloride with a primary amine and (2) modification of the phosphoramide onto SBA-15.

scholarly journals Intramolecular Hydroamination by a Primary Amine of an Unactivated Alkene on Gold Nanoclusters: A DFT Study

ChemCatChem ◽  
2017 ◽  
Vol 9 (24) ◽  
pp. 4450-4450
Author(s):  
Karan Bobuatong ◽  
Hidehiro Sakurai ◽  
Masahiro Ehara
Keyword(s):  
Primary Amine ◽  
Gold Nanoclusters ◽  
Dft Study

New Views on the Reaction of Primary Amine and Aldehyde from DFT Study

2015 ◽  
Vol 119 (18) ◽  
pp. 4252-4260 ◽  
Author(s):  
Yun-qiao Ding ◽  
Yue-zhi Cui ◽  
Tian-duo Li
Keyword(s):  
Primary Amine ◽  
Dft Study

scholarly journals Intramolecular Hydroamination by a Primary Amine of an Unactivated Alkene on Gold Nanoclusters: A DFT Study

ChemCatChem ◽  
2017 ◽  
Vol 9 (24) ◽  
pp. 4490-4500 ◽  
Author(s):  
Karan Bobuatong ◽  
Hidehiro Sakurai ◽  
Masahiro Ehara
Keyword(s):  
Primary Amine ◽  
Gold Nanoclusters ◽  
Dft Study

Mechanisms of ethylene biosynthesis and response in plants

2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Ethylene Biosynthesis ◽  
Unsaturated Hydrocarbon ◽  
Flower Senescence ◽  
Detailed Knowledge ◽  
Plant Growth And Development ◽  
Step Process ◽  
Ethylene Response ◽  
Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

Making Repeated Choices: A Dual-Step Process

2008 ◽  
Author(s):  
Shenghua Luan ◽  
Shuli Yu
Keyword(s):  
Step Process

Platelet Adhesion to Native Collagens Involves Proteoglycans and May Be a Two-Step Process

1987 ◽  
Vol 58 (02) ◽  
pp. 786-789 ◽  
Author(s):  
O Behnke
Keyword(s):  
Electron Microscope ◽  
Platelet Adhesion ◽  
Close Contact ◽  
Blood Platelets ◽  
Collagen Fibrils ◽  
Platelet Membrane ◽  
Step Process ◽  
Rat Blood ◽  
Wide Gap ◽  
Rat Tail

SummaryAdhesion of rat blood platelets to native rat tail collagen fibrils was studied in the electron microscope under conditions that preserved collagen-associated proteoglycans (CAPG). The CAPG molecules were aligned in chain-like configurations that encircled the fibrils with a 65 nm period; they appeared to coat the fibrils completely and extended 60-100 nm away from the fibril. The initial platelet-fibril contact occurred between the platelet glycocalyx and the CAPG of the fibrils i.e. between two surfaces with net-negative charges. When close contact was established between the fibril surface proper and the platelet membrane, CAPG were not identified in the area of contact, and the collagen-platelet distance was reduced to a ~10-12 nm wide gap traversed by delicate links in register with fibril periodicities.

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