Ultrasound as a Method to Control Protein-Polysaccharide Foam Stability by Microscopic Parameter Alteration

2014 ◽  
Vol 39 (6) ◽  
pp. 1272-1277 ◽  
Author(s):  
Karina Martínez ◽  
Cecilio Carrera Sanchez
Keyword(s):  
Foam Stability ◽  
Microscopic Parameter ◽  
Control Protein

HSF1 is a Direct, Master AMPK Antagonist to Control Protein Cholesteroylation

2018 ◽  
Author(s):  
Kuo-Hui Su ◽  
Siyuan Dai ◽  
Zijian Tang ◽  
Chengkai Dai
Keyword(s):  
Control Protein

Novel asymmetrical bis-surfactants with naphthalene and two amide groups: Synthesis, foamability and foam stability

2021 ◽  
Vol 329 ◽  
pp. 115534
Author(s):  
Yue Jia ◽  
Xiangfeng Guo ◽  
Lihua Jia ◽  
Zhenlong Zhao ◽  
Rui Yang ◽  
...  
Keyword(s):  
Foam Stability

scholarly journals Impact of tailored water chemistry aqueous ions on foam stability enhancement

2021 ◽  
Author(s):  
Zuhair AlYousef ◽  
Subhash Ayirala ◽  
Majed Almubarak ◽  
Dongkyu Cha
Keyword(s):  
Aqueous Solutions ◽  
Water Chemistry ◽  
Foam Stability ◽  
Chloride Salt ◽  
Foam Generation ◽  
Monovalent Ions ◽  
Injection Water ◽  
Foam Stabilization ◽  
Aqueous Ions ◽  
The Impact

AbstractGenerating strong and stable foam is necessary to achieve in-depth conformance control in the reservoir. Besides other parameters, the chemistry of injection water can significantly impact foam generation and stabilization. The tailored water chemistry was found to have good potential to improve foam stability. The objective of this study is to extensively evaluate the effect of different aqueous ions in the selected tailored water chemistry formulations on foam stabilization. Bulk and dynamic foam experiments were used to evaluate the impact of different tailored water chemistry aqueous ions on foam generation and stabilization. For bulk foam tests, the stability of foams generated using three surfactants and different aqueous ions was analyzed using bottle tests. For dynamic foam experiments, the tests were conducted using a microfluidic device. The results clearly demonstrated that the ionic content of aqueous solutions can significantly affect foam stabilization. The results revealed that the foam stabilization in bulk is different than that in porous media. Depending on the surfactant type, the divalent ions were found to have stronger influence on foam stabilization when compared to monovalent ions. The bulk foam results pointed out that the aqueous solutions containing calcium chloride salt (CaCl2) showed longer foam life with the anionic surfactant and very weak foam with the nonionic surfactant. The solutions with magnesium chloride (MgCl2) and CaCl2 salts displayed higher impact on foam stability in comparison with sodium chloride (NaCl) with the amphoteric alkyl amine surfactant. Less stable foams were generated with aqueous solutions comprising of both magnesium and calcium ions. In the microfluidic model, the solutions containing MgCl2 showed higher resistance to gas flow and subsequently higher mobility reduction factor for the injection gas when compared to those produced using NaCl and CaCl2 salts. This experimental study focusing about the role of different aqueous ions in the injection water on foam could help in better understanding the foam stabilization process. The new knowledge gained can also enable the selection and optimization of the right injection water chemistry and suitable chemicals for foam field applications.

scholarly journals Correlations between the Type of Aggregates in the Bulk Phase and the Functionality and Safety of All-Purpose Cleaners

2021 ◽  
Vol 22 (12) ◽  
pp. 6592
Author(s):  
Artur Seweryn ◽  
Tomasz Wasilewski ◽  
Anita Bocho-Janiszewska
Keyword(s):  
Sodium Chloride ◽  
Magnesium Chloride ◽  
Foam Stability ◽  
Bulk Phase ◽  
Magnesium Salt ◽  
Foaming Properties ◽  
Performance Properties ◽  
Salt Addition ◽  
And Performance ◽  
The Given

The article shows that the type and concentration of inorganic salt can be translated into the structure of the bulk phase and the performance properties of ecological all-purpose cleaners (APC). A base APC formulation was developed. Thereafter, two types of salt (sodium chloride and magnesium chloride) were added at various concentrations to obtain different structures in the bulk phase. The salt addition resulted in the formation of spherical micelles and—upon addition of more electrolyte—of aggregates having a lamellar structure. The formulations had constant viscosities (ab. 500 mPa·s), comparable to those of commercial products. Essential physical-chemical and performance properties of the four formulations varying in salt types and concentrations were evaluated. It was found that the addition of magnesium salt resulted in more favorable characteristics due to the surface activity of the formulations, which translated into adequately high wettability of the investigated hydrophobic surfaces, and their ability to emulsify fat. A decreasing relationship was observed in foaming properties: higher salt concentrations lead to worse foaming properties and foam stability of the solutions. For the magnesium chloride composition, the effect was significantly more pronounced, as compared to the sodium chloride-based formulations. As far as safety of use is concerned, the formulations in which magnesium salt was used caused a much lesser irritation compared with the other investigated formulations. The zein value was observed to decrease with increasing concentrations of the given type of salt in the composition.

Fitting IGM, FGM and NLS switching models to NaNO2-PVA composite transients for its microscopic parameter estimation

2021 ◽  
Author(s):  
Lakhbir Singh ◽  
Baljinder Kaur ◽  
Tarun Garg ◽  
Vishal Sharma ◽  
Navneet Dabra ◽  
...  
Keyword(s):  
Parameter Estimation ◽  
Switching Models ◽  
Microscopic Parameter

Black Rice Huskash is a Useful Template for Foam Stability to Enhance Oil Recovery (EOR)

2021 ◽  
Vol 56 (6) ◽  
pp. 962-970
Author(s):  
Ishaq Ahmad ◽  
Liu Chengwen ◽  
Wu Mingxuan ◽  
Xu Zhengxiao ◽  
Atif Zafar ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Foam Stability ◽  
Black Rice ◽  
Enhance Oil Recovery

A new method for studying foam stability

1996 ◽  
Vol 6 (6) ◽  
pp. 220-221 ◽  
Author(s):  
Valery V. Krotov ◽  
Aleksandr G. Nekrasov ◽  
Anatoly I. Rusanov
Keyword(s):  
Foam Stability ◽  
New Method

scholarly journals Disabling complement regulatory activities of vaccinia virus complement control protein reduces vaccinia virus pathogenicity

Vaccine ◽  
2011 ◽  
Vol 29 (43) ◽  
pp. 7435-7443 ◽  
Author(s):  
John Bernet ◽  
Muzammil Ahmad ◽  
Jayati Mullick ◽  
Yogesh Panse ◽  
Akhilesh K. Singh ◽  
...  
Keyword(s):  
Vaccinia Virus ◽  
Complement Control Protein ◽  
Control Protein

Chemistry, Physical Nature, and Rheology of Aqueous Stimulation Foams

1981 ◽  
Vol 21 (04) ◽  
pp. 410-414 ◽  
Author(s):  
David L. Holcomb ◽  
Ed Callaway ◽  
Lynn L. Curry
Keyword(s):  
High Pressure ◽  
Surfactant Concentration ◽  
High Pressures ◽  
Foam Stability ◽  
Streaming Potential ◽  
Physical Nature ◽  
Chemical Additives ◽  
Laboratory Equipment ◽  
Foaming Agent ◽  
Fracturing Fluids

Abstract Laboratory equipment has been designed specificallyto study effectively the microscopic structure offlowing foams at high pressures. In addition, application of foaming-agent optimization techniquesto design stable foams at varying foam qualities isdemonstrated at high pressures - i.e., 500 to 2,000psig (3448 to 13 792 kPa). Capillary viscosity datafor these foams is established and correlated with avideo-photomicroscopic study of the flowing foamand their designated bubble qualities. Foaming-agent screening information from the tests is providedindicating the foaming-agent generic chemistry thatallows optimal foam stability under high-pressure conditions. Introduction The study of contemporary foam rheology has arather interrupted history beginning with Fried'swork in 1961 on a foam drive process, which was followed by Raza and Marsden's 1965 paper onrheology and streaming potential. During 1969Blauer et al. studied foam flow properties andmade successful comparisons of data obtained incapillary viscometer tests and actual oilfield tubulardata. These investigations lead to the development ofdata and calculated procedures for using high-qualityfoams as fracturing fluids to transport proppanteffectively with extremely low formation damage as aresult of smaller amounts of water or liquid incontact with the formation. With all the theoretical depiction of flowing foamstructure, it was felt that a study was needed to showvisually the actual flowing foam under pressure. Thiswas undertaken in a study' where oil-foamingsurfactant concentrations were optimized using anapparatus similar to ours. (The majority of foamstimulation treatments use aqueous bases, and thisstudy was conducted exclusively with them.) The goal of this project was to design equipmentthat could be adapted to a TV camera/microscopesystem to allow videotaping of flowing foam in aview cell under pressure. To study effectively thechemical nature of four different surfactant foams, the temperature was kept at 80 deg. F (26.7 deg. C)throughout the study. Also, one foam quality of88%, or 88% nitrogen and 12% water was chosenusing 2% KCl water as the liquid phase. Selected pictures from the videotape are presented to show thesuccession of bubble-structure change with pressure.In addition, the effect of surfactant concentration (which had been thought to play a small role, if any, in the rheology of foams) is shown. This allows aneven greater ability to optimize surfactant concentration in the production of stable foams forstimulation. The subjective bubble-quality scale of Holcomb etal. is refined by showing the average bubblediameters at various study pressures and is demonstrated photographically in Figs. 1 through 3.For the viscosity tests through the capillaryviscometer system, a constant 1,000-psi input pressure was maintained for the generation of foam. Testing Apparatus, Procedure, and Chemical Additives The high-pressure test apparatus was designed tomeet the rate requirements for a laboratory testsample of 700 cm (liquid) or more. The system iscapable of pressures to 3,000 psi (20 683 kPa). The pump is a Williams Oscillamatic TM single-strokemodel with a pressure rating to 10,000 psi (68 946kPa). All main lines are 6.35 mm in diameter. Trunklines to the gauges are 3.175-mm-diameter tubing.All tubing in the apparatus is 316 stainless steel. (SeeFig. 4.) SPEJ P. 410^

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