scholarly journals Synergistic effect of polymer-surfactant mixtures on the stability of aqueous silica suspensions

2007 ◽  
Vol 27 (2-3) ◽  
pp. 611-618 ◽  
Author(s):  
Aylin Şakar-Deliormanlı
Keyword(s):  
Synergistic Effect ◽  
Surfactant Mixtures ◽  
The Stability ◽  
Polymer Surfactant ◽  
Silica Suspensions ◽  
Aqueous Silica

scholarly journals Higher Performance of DSSC with Dyes from Cladophora sp. as Mixed Cosensitizer through Synergistic Effect

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Andery Lim ◽  
Noramaliyana Haji Manaf ◽  
Kushan Tennakoon ◽  
R. L. N. Chandrakanthi ◽  
Linda Biaw Leng Lim ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Structural Changes ◽  
Dye Sensitized Solar Cells ◽  
Life Time ◽  
Effect Of Temperature ◽  
Synergistic Activity ◽  
Electron Recombination ◽  
Positive Interaction ◽  
Effective Electron ◽  
The Stability

Chlorophyll and xanthophyll dyes extracted from a single source of filamentous freshwater green algae (Cladophora sp.) were used to sensitize dye sensitized solar cells and their performances were investigated. A more positive interaction is expected as the derived dyes come from a single natural source because they work mutually in nature. Cell sensitized with mixed chlorophyll and xanthophyll showed synergistic activity with improved cell performance of 1.5- to 2-fold higher than that sensitized with any individual dye. The effect of temperature and the stability of these dyes were also investigated. Xanthophyll dye was found to be more stable compared to chlorophyll that is attributed in the ability of xanthophyll to dissipate extra energy via reversible structural changes. Mixing the dyes resulted to an increase in effective electron life time and reduced the process of electron recombination during solar cell operation, hence exhibiting a synergistic effect.

The synergistic effect of medial and lateral patellar retinaculum on the stability of patella in full extension

2017 ◽  
Vol 2 ◽  
pp. 80-80 ◽  
Author(s):  
Jiangfeng Lu ◽  
Yanru Wang ◽  
Yingzhen Niu ◽  
Weixia Bai ◽  
Shurong Liang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Full Extension ◽  
The Stability

Phase behavior of polymer-surfactant systems in relation to polymer-polymer and surfactant-surfactant mixtures

1993 ◽  
Vol 65 (5) ◽  
pp. 953-958 ◽  
Author(s):  
B. Lindman ◽  
Ali Khan ◽  
E. Marques ◽  
M. Graca da Miguel ◽  
L. Piculell ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Surfactant Mixtures ◽  
Surfactant Systems ◽  
Polymer Surfactant

scholarly journals Aggregation kinetics and shear rheology of aqueous silica suspensions

2012 ◽  
Vol 4 (2) ◽  
pp. 169-178 ◽  
Author(s):  
Cigdem O. Metin ◽  
Roger T. Bonnecaze ◽  
Larry W. Lake ◽  
Caetano R. Miranda ◽  
Quoc P. Nguyen
Keyword(s):  
Aggregation Kinetics ◽  
Shear Rheology ◽  
Silica Suspensions ◽  
Aqueous Silica

scholarly journals Effect of molecular weight of polyvinylpyrrolidone on the skin irritation potential and properties of body wash cosmetics in the coacervate form

2019 ◽  
Vol 91 (9) ◽  
pp. 1521-1532 ◽  
Author(s):  
Tomasz Bujak ◽  
Tomasz Wasilewski ◽  
Zofia Nizioł-Łukaszewska
Keyword(s):  
Molecular Weight ◽  
Skin Irritation ◽  
Innovative Technology ◽  
Foaming Properties ◽  
Cosmetic Products ◽  
Surfactant Mixtures ◽  
Innovative Solutions ◽  
Basic Quality ◽  
Strong Competition ◽  
The Stability

Abstract Body wash cosmetics are among the most common groups of cosmetics used by consumers. Faced with strong competition in the marketplace, cosmetic manufacturers search for innovative solutions both in terms of product composition and form. An example of an innovative technology which can be used in the production of body wash cosmetics is the process of coacervation which yields a concentrated body wash product. Another important aspect which needs to be considered in the formulation of body wash cosmetics is their safety of use. It is crucial to ensure that such cosmetic products do not induce skin irritations. At present, the most widespread method of reducing the skin irritation potential of cosmetic products is the use of surfactant mixtures. The study is an attempt to evaluate the effect of using polyvinylpyrrolidone in the formulations of model body wash cosmetics in the coacervate form on the skin irritation potential and basic quality determinants of body wash products. Polyvinylpyrrolidone was found to contribute to a significant reduction in the irritant effect, and the skin irritation potential decreased in proportion to increasing molecular mass of the polymer. The application of polyvinylpyrrolidone with the different molecular weight also has an impact on improving the foaming properties of model body wash cosmetics and the stability of foam they produce.

Inhibition of Related JAK/STAT Pathways with Molecular Targeted Drugs Shows Strong Synergy with Ruxolitinib in Chronic Myeloproliferative Neoplasms

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 5054-5054
Author(s):  
Santiago Barrio ◽  
Miguel Gallardo ◽  
Alicia Arenas ◽  
Rosa M. Ayala ◽  
Inmaculada Rapado ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Western Blot ◽  
Molecular Mechanisms ◽  
Conflicts Of Interest ◽  
Myeloproliferative Neoplasms ◽  
Targeted Drugs ◽  
Antitumor Effects ◽  
Chronic Myeloproliferative Neoplasms ◽  
The Stability ◽  
And Control

Abstract Abstract 5054 Objectives: In the present study we have determined the antitumor effects, molecular mechanisms of action and potential synergies between Ruxolitinib and the molecular targeted drugs Sorafenib, KNK437, Dasatinib and Perifosine, in Philadelphia negative chronic myeloproliferative neoplasms (MPN). Materials and methods: The cytotoxic and cytostatic effects of the different compounds were determined in the JAK2V617F positive cell lines HEL and Ba/F3 JAK2V617F EPOR, and in mononuclear and bone marrow CD34 positive cells from 19 MPN patients. The effects of different drugs at the molecular level were analyzed by flow cytometry and western blot. The IC50 and the synergy combination index (CI) were determined with GrafPath Prism software and Calcusyn software respectively. Results: Ruxolitinib (IC50PV=15nM), as well as Sorafenib (IC50PV=8uM), KNK437 (IC50PV=100uM) and Perifosine (IC50PV=15uM), was able to inhibit proliferation in cell line models and in cells from MPN patients. Dasatinib (IC50PV=12nM), however, was only effective in patient samples, with similar effects in both MPN patients and control donors. Moreover, Dasatinib, KNK437 and Sorafenib showed a strong synergistic effect in combination with Ruxolitinib (CIPV<0. 3, table 1). The Western blot analysis confirmed that Sorafenib inhibited the activation of ERK and P38, and, as a consequence, of STAT5. Ruxolitinib blocked the ERK and STAT5 activation, Dasatinib blocked SRC and STAT5, and KNK437 decreased the stability of the protein JAK2, reducing its expression. Conclusions: The blockage of JAK2 related proliferative pathways has the potential to inhibit cell proliferation in MPNs. Furthermore, the combination of Ruxolitinib with inhibitors targeted against these pathways has a strong synergistic effect. This may be related to a decrease in the activation of the final common effector STAT5. Disclosures: No relevant conflicts of interest to declare.

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