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Latvia Reasonable Design Temperature-Resistant And Salt-Resistant Polyacrylamide

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Simple and efficient protocol for immunoglobulin Y ...

Simple and efficient protocol for immunoglobulin Y ...

Dec 24, 2020 · Since the concentration of IgY in egg yolk is high (15–25 mg/ml (Akita and Nakai, 1993)), and since it can be recovered from the eggs of laying hens for prolonged periods, IgY can be very easily produced in large amounts and production can be scaled-up, thereby providing a long-term supply of substantial amounts of antibodies (∼40 g/year/hen) (Stadelman and …
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Hydrogels: From soft contact lenses and implants to self ...

Hydrogels: From soft contact lenses and implants to self ...

Oct 06, 2009 · Hydrogels formed by crosslinking of HPMA copolymer precursors with coiled-coil modules underwent dramatic volume transitions (de-swelling up to 10-fold) at the melting temperature of the coiled-coil modules. 150 This is a new temperature response mechanism for hydrogels that can be tuned over a wide temperature range by assembling gels with ...
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Discovery of a novel antibacterial protein CB6-C to target ...

Discovery of a novel antibacterial protein CB6-C to target ...

Jan 04, 2022 · Given a serious threat of multidrug-resistant bacterial pathogens to global healthcare, there is an urgent need to find effective antibacterial compounds to treat drug-resistant bacterial infections. In our previous studies, Bacillus velezensis CB6 with broad-spectrum antibacterial activity was obtained from the soil of Changbaishan, China. In this …
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Frontiers | Waste Stream Porous Alkali Activated Materials ...

Frontiers | Waste Stream Porous Alkali Activated Materials ...

May 22, 2019 · The resistance to high temperatures of AAM strongly depends from the composition of raw materials, i.e., Dupuy et al. has reported that all argillite-based AAM samples show low resistance to thermal shock (800°C, 10 min) and strength decreased up to 10 times (Dupuy et al., 2018), while other report by K. Hemra and P. Aungkavattana states that ...
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Acrylamide concentration determines the direction and ...

Acrylamide concentration determines the direction and ...

Sep 24, 2013 · Gentile F, et al. SDS-resistant active and thermostable dimers are obtained from the dissociation of homotetrameric beta-glycosidase from hyperthermophilic Sulfolobus solfataricus in SDS. Stabilizing role of the A-C intermonomeric interface. J Biol Chem. 2002; 277 (46):44050–44060. [Google Scholar]
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Viscoelasticity of mixed polyacrylamide solution

Viscoelasticity of mixed polyacrylamide solution

The flow resistance of mixed polyacrylamide with higher elasticity is also greater than that of single polyacrylamide solution in porous medium. ...
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Thermal Analysis Excellence - Mettler Toledo

Thermal Analysis Excellence - Mettler Toledo

Nimonic 80A is a temperature resistant alloy made of Ni, Cr, Ti and Al. The crucible can be sealed thanks to its thread using a special sealing tool. After the measurement, it can be opened, cleaned and reused about 20 times with a seal disk each time. The maximum pressure is 10 MPa. When sealed, the 270 µL crucible has a height of about 10 mm and
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Multifunctional Biodegradable Polyacrylamide Nanocarriers ...

Multifunctional Biodegradable Polyacrylamide Nanocarriers ...

Aug 28, 2012 · Current cancer therapy usually involves surgery, so as to remove the tumors, if possible, followed by chemotherapy and/or radiation. 1 When feasible, maximal surgical resection of the tumor may indeed improve survival. 2 But success in surgery still relies on the surgeon’s ability to judge the presence of residual tumor tissue at the time of surgery, 3 the reason being …
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Design, expression, and characterization of a novel ...

Design, expression, and characterization of a novel ...

Oct 25, 2012 · A novel specifically targeted antimicrobial peptide (STAMP) that was especially effective against methicillin-resistant Staphylococcus aureus (MRSA) was designed by fusing the AgrD1 pheromone to the N-terminal end of plectasin. This STAMP was named Agplectasin, and its gene was synthesized and expressed in Pichia pastoris X-33 via pPICZαA. The highest …
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Comparative Studies on Enhanced Oil Recovery - ACS Publications

Comparative Studies on Enhanced Oil Recovery - ACS Publications

Feb 15, 2017 ... High-molecular-weight polyacrylamide (PAM) has been widely used in ... Thermothickening and Salinity Tolerant Hydrophobically Modified ...
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Design and Study of a Novel Thermal-Resistant and Shear-Stable ...

Design and Study of a Novel Thermal-Resistant and Shear-Stable ...

Jul 21, 2017 ... The amphoteric polyacrylamide showed perfect temperature resistance in high-salinity solution. The viscosity retention reached 38.9% at 120 ...
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Molecular Detection of Antimicrobial Resistance

Molecular Detection of Antimicrobial Resistance

Another modification of the heteroduplex assay is the double-gradient (DG) variant of the original denaturing gradient gel electrophoresis (DGGE). DG-DGGE uses both a temperature and a polyacrylamide gradient to optimize separation. DG-DGGE was able to detect all rifampin-resistant isolates among a set of 117 isolates .
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Preparation of a Hydrophobic-Associating Polymer with Ultra-High ...

Preparation of a Hydrophobic-Associating Polymer with Ultra-High ...

Apr 4, 2019 ... Currently, polymers with temperature and salt resistance are ... a pentamer polymer was designed by copolymerizing acrylamide (AM), ...
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Performance Evaluation of STARPAM Polymer and Application in ...

Performance Evaluation of STARPAM Polymer and Application in ...

Dec 18, 2018 ... Based on the properties of high temperature and salinity reservoir, the water-soluble polymer with good heat resistance and salt tolerance ...
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Enhanced tendon healing by a tough hydrogel with an ...

Enhanced tendon healing by a tough hydrogel with an ...

Jan 03, 2022 · A hydrogel serving as a high-capacity drug depot and combining a dissipative tough matrix on one side and a tendon-adhesive surface on the other side boosts tissue healing in rat models of tendon ...
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Haruyuki FUJIMAKI | Professor (Full) | PhD | Tottori ...

Haruyuki FUJIMAKI | Professor (Full) | PhD | Tottori ...

The objective of this study was to compare the contribution of four long-term land-use systems (crop, bush, grass, and forest) coupled with anionic polyacrylamide (PAM = 0, 25, and 200 mg L−1 ...
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Gene expression and genetic control to cold tolerance ...

Gene expression and genetic control to cold tolerance ...

Apr 29, 2020 · The mean water content of the seeds at the time of the tests was 12.8 with a maximum variation of 1%. Regarding the physiological quality, when the germination was carried out at 25 °C, there were no significant differences between the evaluated materials (Table 1).Thus, it can be affirmed that all analyzed materials, parent lines and hybrids, presented similar results …
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Recently advances in flexible zinc ion batteries - IOPscience

Recently advances in flexible zinc ion batteries - IOPscience

Oct 01, 2021 · [21] Wang D H, Li H F, Liu Z X et al 2018 A nanofibrillated cellulose/polyacrylamide electrolyte-based flexible and sewable high-performance Zn-MnO2 battery with superior shear resistance Small 14 1803978. Go to reference in article Crossref Google Scholar
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UA1 - Protease-resistant peptide ligands ...

UA1 - Protease-resistant peptide ligands ...

This invention relates generally to the discovery of novel protease-resistant peptide ligands and uses thereof. Specifically, the present invention provides a protease-resistant peptide with three to twenty amino acids capable of binding a biological and comprising one or more basic amino acid(s) and I or aromatic amino acids, wherein one or more of the amino acids is substituted …
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Rapid identification of a stripe rust resistant gene in a ...

Rapid identification of a stripe rust resistant gene in a ...

Feb 15, 2018 · A recessive gene controls the APR of R39 to CYR33. As shown in Table 1, R39 was resistant (IT 0;), whereas Mingxian 169 was susceptible (IT 4), and F 1 plants were also susceptible (IT 3–4). The ...
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Current development and application of chemical ...

Current development and application of chemical ...

Feb 01, 2013 · At present, salt tolerance surfactants and 100°C temperature re- sistant polymers have been selected through screening. It is difficult to apply chemical combination flooding in high-temperature, high-salinity reservoirs, because the devel- opment of salt-tolerance, temperature-resistant polymers and salt-tolerance surfactants has bottleneck.
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Swelling performance of sodium polyacrylate and poly ...

Swelling performance of sodium polyacrylate and poly ...

Dec 19, 2019 · By monitoring the appearance of the gel structure on the wall of the inverted thermal resistant glass bottles at varying time intervals (see Fig. 7), the hydrogel strength codes of E and I with viscosity limitations of 5–6 and 11–13 Pa.s, were arrived at for the poly(acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate samples, respectively …
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Designing hydrogels for controlled drug delivery

Designing hydrogels for controlled drug delivery

To increase the resistance to rupture (that is, the toughness), one can modulate the cross-link density 93 or use interpenetrating networks to form hydrogels. 94 For example, an alginate–polyacrylamide interpenetrating network hydrogel achieved extremely high toughness 95,96, and mechanically resembled soft tissues such as cartilage and ...
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Journal of Physics: Conference Series, Volume 2009, 2021 ...

Journal of Physics: Conference Series, Volume 2009, 2021 ...

Aug 24, 2021 · The viscosity of the composite gel reached 10000 mPa S, at 0.1% polyacrylamide concentration, the gel forming range of pH was 6~12, and the viscosity of 20000 mg/L NaCl solution reached 15000 mPa/s, which had better salt resistance.
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Current development and application of chemical ...

Current development and application of chemical ...

Feb 01, 2013 · The polymer applied at early stage for ASP flooding is hy- drolyzed polyacrylamide (HPAM), which is poor in salt tol- erance and temperature resistance, only suitable for tempera- tures below 75 °C, can only reach good viscosity prepared with fresh water; most commonly used surfactants are sul- fonate which have a poor salt and divalent resistance ability.
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Co-immunoprecipitation and semi-quantitative ...

Co-immunoprecipitation and semi-quantitative ...

Sep 17, 2021 · Note: The protocol for the PEI transfection solution was adapted from Polysciences (Warrington, PA). As per requirement, apr. Dispense 100 mg of PEI into a 200 mL glass beaker and add 90 mL ultrafiltered, deionized water (ddH 2 O, milli-Q, Millipore). Add a stir bar and gently stir the solution ...
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Synthesis and properties of a betaine type copolymer ...

Synthesis and properties of a betaine type copolymer ...

Jul 01, 2020 · Temperature resistant capacity. In order to investigate the temperature resistance of the polymer fluid loss additive, the API fluid loss and rheological parameters of the polymer freshwater base slurry system with a mass fraction of 2.0% after aging for 16 h at different temperatures were tested. The experimental results are shown in Fig. 5.
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Swelling performance of sodium polyacrylate and poly ...

Swelling performance of sodium polyacrylate and poly ...

Dec 19, 2019 · After 2-h of free swelling, the absorbency of the poly (acrylamide-co-acrylic acid) potassium salt decreased with increasing temperature with the peak absorbency occurring at 25 °C whereas and the lowest at 100 °C (Fig. 9a). At 25 °C, the polymer network formed hydrogen bonds with the water molecules, developing a hydration shell around the ...
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Review of friction reducers used in slickwater fracturing ...

Review of friction reducers used in slickwater fracturing ...

Feb 01, 2019 · The basic design is to add a large amount of salt-resistant monomers (such as AMPS) to the polymer backbone chain, and to use a twin-tailed nonionic hydrophobic monomer to synthesize a hydrophobically associating polymer (Mao et al., 2018). Further test showed that the DR rate of a newly synthesized FR reached about 70% at a concentration of 0 ...
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Molecular design of modified polyacrylamide for the salt ...

Molecular design of modified polyacrylamide for the salt ...

May 29, 2012 · In our work, three kinds of functional monomers were selected to modify polyacrylamide (PAM) or partially hydrolyzed polyacrylamide (HPAM) by molecular dynamics simulation so as to achieve the stronger salt-tolerance of modified HM-HPAM. The radius of gyration (R g), the hydrodynamic radius (R H), the effective length (L ef) and the intrinsic …
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Thickening mechanism of water-soluble polymer in the ...

Thickening mechanism of water-soluble polymer in the ...

Sep 17, 2021 · In enhanced oil recovery (EOR), water-soluble polymer is widely used as thickening agent to improve mobility control ability [1,2,3].Partially hydrolyzed polyacrylamide (HPAM) is the most commonly used polymer for its high viscosity in low salinity water [4, 5].However, the viscosity is found to decrease dramatically in high salinity water.
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PRGLILHGZLWKSODQWRLODVDGGLWLYHLQZDWHU …

PRGLILHGZLWKSODQWRLODVDGGLWLYHLQZDWHU …

2Pipeline Design Institute, ... due to their hydrophobic associative ability in high-temperature and high-salt conditions. ... easier flowability and better salt resistance at a reasonable ...
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A novel high anti-corrosion performance polymer based ...

A novel high anti-corrosion performance polymer based ...

Reasonable design, preparation and application of highly effective fillers are the main challenges to significantly improve the protective performance of coatings. Herein, based on the EP coating, [email protected] dodecyl benzenesulfonate‑cerium dioxide-montmorillonite ([email protected] 2-MMT) filler was elaborately designed.
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Thickening mechanism of water-soluble polymer in the presence ...

Thickening mechanism of water-soluble polymer in the presence ...

Sep 17, 2021 · The results may provide a good strategy for the design of salt-resistant polymers. Introduction In enhanced oil recovery (EOR), water-soluble polymer is widely used as thickening agent to improve mobility control ability [ 1 , 2 , 3 ].
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Synthesis of Polyacrylamide with Superb Salt-Thickening ...

Synthesis of Polyacrylamide with Superb Salt-Thickening ...

The influence of salt and temperature on the viscosity of a hydrophobically modified polyacrylamide-based (PAM-based) novel functional polymer (RH-4) was investigated.
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Polymers for application in high temperature and high salinity ...

Polymers for application in high temperature and high salinity ...

Benefits of polymer flooding reported in the literature (Abidin, Puspasari. & Nugroho, 2012) refer to the use of Xanthan Gum,. PAM (polyacrylamide), HPAM ( ...
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