scholarly journals Application of reaction method based on the meanings hidden in overt behaviors and its effect on marital adaptability

2021 ◽  
Vol 20 (6) ◽  
pp. 719-729
Author(s):  
ahad solatpetloo ◽  
shahram vaziri ◽  
farah lotfikashani ◽  
◽  
◽  
...  
Keyword(s):  
Reaction Method

Grand-Reaction Method for Simulations of Ionization Equilibria and Ion Partitioning in a Broad Range of pH and Ionic Strength

2019 ◽  
Author(s):  
Jonas Landsgesell ◽  
Oleg Rud ◽  
Pascal Hebbeker ◽  
Raju Lunkad ◽  
Peter Košovan ◽  
...  
Keyword(s):  
Mean Field ◽  
Coarse Grained ◽  
Reactive System ◽  
Acid Base ◽  
Buffer Solution ◽  
Reaction Method ◽  
Ionization Equilibria ◽  
Coarse Grained Simulations ◽  
Ph Range ◽  
Weak Polyelectrolytes

We introduce the grand-reaction method for coarse-grained simulations of acid-base equilibria in a system coupled to a reservoir at a given pH and concentration of added salt. It can be viewed as an extension of the constant-pH method and the reaction ensemble, combining explicit simulations of reactions within the system, and grand-canonical exchange of particles with the reservoir. Unlike the previously introduced methods, the grand-reaction method is applicable to acid-base equilibria in the whole pH range because it avoids known artifacts. However, the method is more general, and can be used for simulations of any reactive system coupled to a reservoir of a known composition. To demonstrate the advantages of the grand-reaction method, we simulated a model system: A solution of weak polyelectrolytes in equilibrium with a buffer solution. By carefully accounting for the exchange of all constituents, the method ensures that all chemical potentials are equal in the system and in the multi-component reservoir. Thus, the grand-reaction method is able to predict non-monotonic swelling of weak polyelectrolytes as a function of pH, that has been known from mean-field predictions and from experiments but has never been observed in coarse-grained simulations. Finally, we outline possible extensions and further generalizations of the method, and provide a set of guidelines to enable safe usage of the method by a broad community of users.<br><br>

Formulation of Modified Release Atorvastatin Nanoparticles by Emulsion Interfacial Reaction Method

2015 ◽  
Vol 8 (3) ◽  
pp. 2937-2940
Author(s):  
Sudhakar Sekar ◽  
Shee Sim May
Keyword(s):  
Interfacial Reaction ◽  
Therapeutic Potential ◽  
Chitosan Nanoparticles ◽  
In Vitro Release ◽  
Morphological Characteristics ◽  
Preparation Technique ◽  
Modified Release ◽  
Reaction Method ◽  
Vitro Release

The aim of the study is to formulate a modified release chitosan nanoparticles for the oral delivery of atorvastatin and to study the in vitro release of atorvastatin from chitosan nanoparticles. Atorvastatin-loaded chitosan nanoparticles were prepared with different concentration of cross-linking agent (glutaraldehyde) by emulsion interfacial reaction method. The formed nanoparticles were characterized in terms of size and morphological characteristics by scanning electron microscopy (SEM) and transmission electron microscope (TEM). Spherical and regular nanoparticles with the size range of 100-250nm were formed. Atorvastatin encapsulation efficiency of nanoparticles was found to be highest in ANP3, followed by ANP2 and ANP1. The in vitro release of atorvastatin was studied by membrane diffusion technique. The resulted cumulative percentage of drug released for ANP1, ANP2 and ANP3 were 60.08%, 34.81% and 20.39% respectively. Through this study, the nanoparticles preparation technique has shown to be a promising approach for enhancing the dissolution of hydrophobic drugs like atorvastatin calcium. The application of this novel delivery system offers good therapeutic potential in the management of hypercholesterolemia and dyslipidemia.

Preparation and Evaluation of Chitosan Loaded Naproxen Nanoparticles by Emulsion Interfacial Reaction Method

2019 ◽  
Vol 9 (2) ◽  
pp. 89-96
Author(s):  
Abbaraju Krishna Sailaja ◽  
Juveria Banu
Keyword(s):  
Drug Release ◽  
Interfacial Reaction ◽  
Polymer Concentration ◽  
Chitosan Nanoparticles ◽  
Particle Diameter ◽  
Entrapment Efficiency ◽  
Reaction Method ◽  
Release Data ◽  
Mean Particle Diameter

Aim: The aim of this investigation was to develop and characterize naproxen loaded chitosan nanoparticles by emulsion interfacial reaction method. Methodology: For emulsion interfacial reaction method chitosan was used as a polymer. In this method, eight formulations were prepared by varying drug to polymer concentration. Discussion: Out of eight formulations prepared using emulsion interfacial reaction method EI8 formulation was found to be the best formulation. The drug content was observed as 94.4%, entrapment efficiency and loading capacity were found to be 87.5% and 75%, respectively. The mean particle diameter was measured as 324.6nm and the Zeta potential value was found to be -42.4mv. In vitro drug release data showed 97.2% of drug release rate sustained up to 12hrs. Conclusion: The results clearly reveal that EI8 formulation having the highest amount of drug was considered as the best formulation because of its small mean particle diameter, good entrapment efficiency, and stability.

Fabrication and Properties of Zinc Silicate Phosphors through Solid State Reaction

2010 ◽  
Vol 160-162 ◽  
pp. 594-598
Author(s):  
Guo Jian Jiang ◽  
Jia Yue Xu ◽  
Hui Shen ◽  
Yan Zhang ◽  
Lin He Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Emission Peak ◽  
Zinc Silicate ◽  
Red Phosphor ◽  
Reaction Method ◽  
Long Afterglow ◽  
Luminescent Mechanism ◽  
Silicate Phosphors

Zinc silicate-based (Zn2SiO4:Eu3+) long afterglow phosphors were produced by solid state reaction method. The effects of borax and Eu2O3 additive on the properties of fabricated products have been studied. The results show that, there is not much difference in phase compositions within the borax additive amount; however, their SEM morphologies are different. Borax additive can increase the grain size of the product. Some sintering phenomena could be observed in the sample with Eu2O3 addition. The fluorescence spectroscopy results indicate that, the emission peak of the sample with Eu3+ additive located at 612nm, which may be a good candidate for red phosphor applications. The luminescent mechanism of Zn2SiO4:Eu3+ is also discussed.

scholarly journals Influence of the Substrate, Process Conditions, and Postannealing Temperature on the Properties of ZnO Thin Films Grown by the Successive Ionic Layer Adsorption and Reaction Method

ACS Omega ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 2665-2674
Author(s):  
Bijoy Chandra Ghos ◽  
Syed Farid Uddin Farhad ◽  
Md Abdul Majed Patwary ◽  
Shanta Majumder ◽  
Md. Alauddin Hossain ◽  
...  
Keyword(s):  
Thin Films ◽  
Zno Thin Films ◽  
Process Conditions ◽  
Reaction Method ◽  
Layer Adsorption ◽  
Ionic Layer

Enhancing the performance of Cu2ZnSnS4 solar cell fabricated via successive ionic layer adsorption and reaction method by optimizing the annealing process

Solar Energy ◽  
2021 ◽  
Vol 220 ◽  
pp. 204-210
Author(s):  
Kaiwen Sun ◽  
Ao Wang ◽  
Zhenghua Su ◽  
Fangyang Liu ◽  
Xiaojing Hao
Keyword(s):  
Solar Cell ◽  
Annealing Process ◽  
Reaction Method ◽  
Layer Adsorption ◽  
Ionic Layer
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