High-molecular-weight insoluble polymers that contain functional cationic groups capable of undergoing exchange reactions with anions.
High molecular weight, insoluble polymers which contain functional groups that are capable of undergoing exchange reactions (ION EXCHANGE) with either cations or anions.
High molecular weight insoluble polymers which contain functional anionic groups that are capable of undergoing exchange reactions with cations.
A chlorinated epoxy compound used as an industrial solvent. It is a strong skin irritant and carcinogen.
Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components.
A histamine H1 antagonist used as an antiemetic, antitussive, for dermatoses and pruritus, for hypersensitivity reactions, as a hypnotic, an antiparkinson, and as an ingredient in common cold preparations. It has some undesired antimuscarinic and sedative effects.
Negatively charged atoms, radicals or groups of atoms which travel to the anode or positive pole during electrolysis.
Separation technique in which the stationary phase consists of ion exchange resins. The resins contain loosely held small ions that easily exchange places with other small ions of like charge present in solutions washed over the resins.
A plant species of the genus PINUS that contains isocupressic acid.
Polymerized forms of styrene used as a biocompatible material, especially in dentistry. They are thermoplastic and are used as insulators, for injection molding and casting, as sheets, plates, rods, rigid forms and beads.
Flammable, amorphous, vegetable products of secretion or disintegration, usually formed in special cavities of plants. They are generally insoluble in water and soluble in alcohol, carbon tetrachloride, ether, or volatile oils. They are fusible and have a conchoidal fracture. They are the oxidation or polymerization products of the terpenes, and are mixtures of aromatic acids and esters. Most are soft and sticky, but harden after exposure to cold. (From Grant & Hackh's Chemical Dictionary, 5th ed & Dorland, 28th ed)
Synthetic resins, containing an inert filler, that are widely used in dentistry.

Modification of chitosan to improve its hypocholesterolemic capacity. (1/88)

Cholestyramine is the most widely used bile acid sequestrant in the treatment of hypercholesterolemia. However, cholestyramine has unpleasant side effects as a consequence of its hydrophobic backbone. Therefore, high-capacity bile acid sequestering biopolymers with cationic chitosan derivatives were developed, because electrostatic interactions are important for binding with bile acid anions. Dialkylaminoalkylation and reductive amination of chitosan were done to add dialkylaminoalkyl and an additional free amino group at a hydroxyl site in the chitosan backbone respectively and the amino-derivatized chitosan derivatives were quaternized with methyl iodide to produce a cationic polyelectrolyte. The in vitro bile acid binding capacity of the chitosan derivatives in aqueous NaCl was measured by reversed-phase HPLC. The binding capacities of sodium glycocholate (a major bile acid) to chitosan, DEAE-chitosan, quaternized DEAE-chitosan, and cholestyramine were 1.42, 3.12, 4.06, and 2.78 mmol/g resin, respectively. With quaternized DEAE-chitosan, the bile acid binding capacity increased approximately 50% over that of cholestyramine. The bile acid binding capacity of dialkylaminoalkyl chitosan derivatives increased with the number of carbons in the alkyl groups, indicating that hydrophobic interaction is a secondary factor for the sequestration of bile acids.  (+info)

Combined biochemical and electron microscopic analyses reveal the architecture of the mammalian U2 snRNP. (2/88)

The 17S U2 small nuclear ribonucleoprotein particle (snRNP) represents the active form of U2 snRNP that binds to the pre-mRNA during spliceosome assembly. This particle forms by sequential interactions of splicing factors SF3b and SF3a with the 12S U2 snRNP. We have purified SF3b and the 15S U2 snRNP, an intermediate in the assembly pathway, from HeLa cell nuclear extracts and show that SF3b consists of four subunits of 49, 130, 145, and 155 kD. Biochemical analysis indicates that both SF3b and the 12S U2 snRNP are required for the incorporation of SF3a into the 17S U2 snRNP. Nuclease protection studies demonstrate interactions of SF3b with the 5' half of U2 small nuclear RNA, whereas SF3a associates with the 3' portion of the U2 snRNP and possibly also interacts with SF3b. Electron microscopy of the 15S U2 snRNP shows that it consists of two domains in which the characteristic features of isolated SF3b and the 12S U2 snRNP are conserved. Comparison to the two-domain structure of the 17S U2 snRNP corroborates the biochemical results in that binding of SF3a contributes to an increase in size of the 12S U2 domain and possibly induces a structural change in the SF3b domain.  (+info)

Separation of nucleotide oligomers by unitary anion-exchange. (3/88)

This paper is the first report on the retention behavior of synthetic oligonucleotides and nucleotide oligomers on a continuous-bedmatrix, strong-anion-exchange column. The separation mechanism is predominantly an anion-exchange process, but hydrophobic interaction plays a role as well. The separation is based on the chain length of the oligonucleotide. Both the addition of organic mobile phase modifiers and changes in column temperature affect the retention of oligomers significantly. A volatile buffer system (e.g., triethylamine acetate) could be employed to purify oligonucleotides, and no desalting procedure would be required after the column separation step. The recoveries from the separation are 70% or higher. The maximum loading capacity of an analytical column (35 x 7-mm i.d.) was found to be more than 366 micrograms.  (+info)

Quantitation of intracellular triphosphate of emtricitabine in peripheral blood mononuclear cells from human immunodeficiency virus-infected patients. (4/88)

An analytical methodology combining solid-phase extraction (SPE) and high-performance liquid chromatography (HPLC) was developed to quantitate the intracellular active 5'-triphosphate (TP) of beta-L-2',3'-dideoxy-5-fluoro-3'-thiacytidine (emtricitabine) (FTC) in human peripheral blood mononuclear cells (PBMCs). The FTC nucleotides, including 5'-mono-, di-, and triphosphates, were successively resolved on an anion-exchange SPE cartridge by applying a gradient of potassium chloride. The FTC-TP was subsequently digested to release the parent nucleoside that was finally analyzed by HPLC with UV detection (HPLC-UV). Validation of the methodology was performed by using PBMCs from healthy donors exposed to an isotopic solution of [(3)H]FTC with known specific activity, leading to the formation of intracellular FTC-TP that was quantitated by an anion-exchange HPLC method with radioactive detection. These levels of FTC-TP served as reference values and were used to validate the data obtained by HPLC-UV. The assay had a limit of quantitation of 4. 0 pmol of FTC-TP (amount on column from approximately 10(7) cells). Intra-assay precision (coefficient of variation percentage of repeated measurement) and accuracy (percentage deviation of the nominal reference value), estimated by using quality control samples at 16.2, 60.7, and 121.5 pmol, ranged from 1.3 to 3.3% and -1.0 to 4. 8%, respectively. Interassay precision and accuracy varied from 3.0 to 10.2% and from 2.5 to 6.7%, respectively. This methodology was successfully applied to the determination of FTC-TP in PBMCs of patients infected with human immunodeficiency virus after oral administration of various dosing regimens of FTC monotherapy.  (+info)

The use of histological techniques for the demonstration of ion exchange resins. (5/88)

AIM: To establish the staining characteristics of certain ion exchange resins in histological material, with a view to enabling confident differential identification. METHODS: Various histological staining procedures were applied to selected pathological material and prepared agar blocks containing the cation exchange resin calcium polystyrene sulphonate and the anion exchange resin cholestyramine. RESULTS: Calcium polystyrene sulphonate uniquely stained strongly by a direct Schiff's reagent procedure without any preoxidation and by the Ziehl-Neelsen method. Cholestyramine was negative by the former method but stained strongly with a standard Congo red technique. CONCLUSIONS: These staining results are consistent with the known structure and properties of polystyrene sulphonate and cholestyramine resins. Polystyrene sulphonate resins have the virtually pathognomonic feature of direct Schiff positivity, while morphology, location, and strong non-birefringent Congo red positivity facilitate the identification of cholestyramine. It is possible that the intrinsic staining characteristics of cholestyramine may be lost once it has bound to its target.  (+info)

An analytical system for rapid separation of tissue nucleotides at low pressures on conventional anion exchangers. (6/88)

An analytical anion-exchange procedure has been developed for the rapid separation of acid-soluble nucleotides (the so-called "free" or tissue nucleotides). It permits assay at low pressures (275-415 kPa; 40-60 psi) in less than 1 h on 10-cm columns of Aminex resins (conventional styrene-type anion exchangers) with alkaline citrate solutions as the eluent. Separation variables have been investigated, to determine optimum conditions for the routine analysis of samples containing tissue nucleotides. Also described here is a simple solvent-extraction procedure for removing HCIO4 or CCI3CO2H quantitatively from cell extracts that contain acid-soluble nucleotides: they are removed from aqueous acid solutions with a water-insoluble amine dissolved in a water-immiscible solvent.  (+info)

Analysis of the physicochemical interactions between Clostridium difficile toxins and cholestyramine using liquid chromatography with post-column derivatization. (7/88)

A potential therapy for antibiotic-associated pseudomembranous colitis is to bind Clostridium difficile toxins A and B using cholestyramine, a hydrophobic anion exchange medium. Frontal analysis in isotonic phosphate buffer was studied using post-column derivatization with o-phthalaldehyde, which gave a highly sensitive (> or =30 ng) flow-through analysis. Following load (1.5-3.0 microg toxin/3.6 mg), toxin A was bound at a slightly higher capacity than B, due to slower kinetics. A salt gradient eluted roughly 20% of bound toxin A with 0.6 M NaCl and toxin B with 1.1 M NaCl, hence toxin A showed weaker electrostatic affinity. The remainder of toxin A (65%) and some of toxin B (10% out of 50%) were eluted using a subsequent gradient to 60% acetonitrile in normal saline, which measured predominantly hydrophobic binding. Low and high affinity populations of both toxins were observed. Glycocholic acid or amino acids were competitive binders, although these components had little effect on the toxin A population bound primarily through ionic interactions. Competitive protein constituents in hamster cecal contents were also profiled. These results help to explain the variable clinical response in using cholestyramine to treat colitis. Using quaternary amine-polyhydroxymethacrylate (PHM) ion exchange chromatography, a trend for increased binding at higher pH was observed, especially for toxin A. Binding to strong cation exchange resins (sulfonate-PHM) was not observed. A range of reversed phase media retained both toxins, although recovery was very poor relative to protein standards. Size exclusion chromatography with light scattering detection showed that toxin B exists in different aggregation states, while toxin A remains monomeric.  (+info)

Liquid-chromatographic analysis for neutral carbohydrates in serum glycoproteins. (8/88)

We describe a sensitive, reproducible procedure of analysis for the six neutral carbohydrates in glycoproteins, by high-resolution anion-exchange chromatography. As many as 16 neutral carbohydrates can be separated by elution with a concentration gradient of boric acid (pH 7, 67 to 672 mmol/liter). The carbohydrates are detected with a cerate oxidimetric detector system, which monitors the fluorescence of Ce3+ produced by the reaction of the eluted constituents with Ce4+. Sensitivity to 1 nmol of fucose is demonstrated. Analytical methods and results are presented for mannose, fucose, and galactose in serum glycoproteins for both normal women and those with metastatic breast cancer. We briefly discuss the possibility of separating and analyzing for the three neutral carbohydrates in serum glycoproteins in 4 h by isocratic (constant eluent concentration) elution from a chromatographic column.  (+info)

Product Details of LH-301 Macroporous weakly Basic Anion exchange resin, LH-301 Macroporous weakly Basic Anion exchange resin from China manufacturer on Hisupplier.com.
The present paper demonstrates application of isotopic tracer technique in characterization of anion exchange resins Dowex-SBR LC and Indion-454 for which 131I and 82Br radio isotopes were used. The characterization was made based on iodide and bromide ion-isotopic exchange reaction kinetic data obtained for the two resins. It was observed that during iodide ion-isotopic exchange reaction performed at 35.0 °C, 1.000 g of ion exchange resins and 0.002 mol/L labeled iodide ion solution, the values of specific reaction rate (min-1), amount of ion exchanged (mmol), initial rate of ion exchange (mmol/min) and log Kd were 0.379, 0.426, 0.161 and 16.2 respectively for Dowex-SBR LC resin, which was higher than the respective values of 0.156, 0.243, 0.038 and 13.4 as that obtained by using Indion-454 resins. The identical trend was observed for the two resins during bromide ion-isotopic exchange reaction. The results of present investigation also indicate that during the two ion-isotopic exchange reactions, for
The counteranion exchange of quaternary 1,2,3-triazolium salts was examined using a simple method that permitted halide ions to be swap for a variety of anions using an anion exchange resin (A¯ form). The method was applied to 1,2,3-triazolium-based ionic liquids and the iodideto- anion exchange proceeded in excellent to quantitative yields, concomitantly removing halide impurities. Additionally, an anion exchange resin (N3¯ form) was used to obtain the benzyl azide from benzyl halide under mild reaction. Likewise, following a similar protocol, bis(azidomethyl)arenes were also synthesized in excellent yields. The results of a proton NMR spectroscopic study of simple azolium-based ion pairs are discussed, with attention focused on the significance of the charged-assisted ( ...
Use UNOsphere strong anion exchange resin for efficient biopharmaceutical molecule capture from crude feedstreams. Polymer with ultrahigh binding capacities.
Anion exchange resins (AERs) were compared with aluminum-based coagulants for reducing disinfection by-product (DBP) precursor concentrations from a source water collected in northeast Ohio, USA. Three AERs (IRA-910, IRA-958, and MIEX) were evaluated to determine which resin would remove the most natural organic matter (NOM) and moieties responsible for DBP formation. All the AERs were found to be highly proficient at NOM removal specifically the moieties that absorb UV254 (i.e., chromophores) over 75 min of contact time; however, MIEX removed NOM at a faster rate than IRA-910 and IRA-958 resins. Enhanced coagulation was effective at removing approximately 35% of the NOM and 40-60% of the chromophores and fluorophores (i.e., excitation-emission matrix pairs A and C). DBP formation was determined as a function of pH for the different NOM removal processes. MIEX treatment resulted in significant reduction in DBP concentrations when compared to chlorinating the raw source water. MIEX generally ...
The removal of copper from plating waste water by weakly basic chelating anion exchange resins, such as Dowex 50 x 4, Dowex 50 x 2 and Dowex M-4195, i..
QIAGEN-tips contain a unique, patented anion-exchange resin which eliminates the need for expensive equipment and reagents such as ultracentrifuges, HPLC/FPLC‚ or CsCl. Toxic and mutagenic substances such as phenol, chloroform, and ethidium bromide are also not required. Plasmid purification on QIAGEN resin is based on the interaction between negatively charged phosphates of the DNA backbone and positively charged DEAE groups on the surface of the resin (see figure |a href=/hu/resources/technologies/plasmid-resource-center/qiagen anion-exchange resin/images/chemical structure of positively charged deae groups of qiagen resin/|Chemical structure of positively charged DEAE groups of QIAGEN resin|/a|). The salt concentration and pH conditions of the buffers used determine whether DNA is bound or eluted from the column. The key advantage of QIAGEN anion-exchange resin arises from its exceptionally high charge density. The resin consists of defined silica beads with a particle size of 100 µm, a
QIAGEN-tips contain a unique, patented anion-exchange resin which eliminates the need for expensive equipment and reagents such as ultracentrifuges, HPLC/FPLC‚ or CsCl. Toxic and mutagenic substances such as phenol, chloroform, and ethidium bromide are also not required. Plasmid purification on QIAGEN resin is based on the interaction between negatively charged phosphates of the DNA backbone and positively charged DEAE groups on the surface of the resin (see figure |a href=/ca/resources/technologies/plasmid-resource-center/qiagen anion-exchange resin/images/chemical structure of positively charged deae groups of qiagen resin/>Chemical structure of positively charged DEAE groups of QIAGEN resin|/a>). The salt concentration and pH conditions of the buffers used determine whether DNA is bound or eluted from the column. The key advantage of QIAGEN anion-exchange resin arises from its exceptionally high charge density. The resin consists of defined silica beads with a particle size of 100 µm, a
Improved separations of xylose, mannose, galactose, arabinose, glucose, xylitol, arabitol; sorbitol, galactitol, or mannitol (and other monosaccharides and sugar alcohols) from other sugars and sugar alcohols may be achieved by chromatography over hydroxyl-form anion exchange surfaces prepared from anion exchange resins at relatively low hydroxyl concentrations. When a strong base anion exchange resin, such as a chloride-form strong base anion exchange resin, is conditioned with a low concentration of hydroxyl (for example, an NaOH solution with a concentration between 0.1 and 1000 mM, most preferably between 1 and 10 mM), the conditioned resin separates a number of sugars and sugar alcohols from one another, while still allowing ready desorption from the resin.
A multi-step process was developed for microbial d-lactic acid purification, followed by poly-d-lactic acid (PDLA) synthesis via azeotropic polycondensation process. Several anion exchange resins were screened for their binding capacity using model lactic acid solutions. Amberlite® IRA67 (weak base anion exchange resin) showed the highest lactic acid adsorption, with maximum adsorption capacity, qmax, of 136.11 mg lactic acid / g of resin, and was further selected to purify D-lactic acid from DDGS hydrolysates through a three-step process; (1) treatment with 7% w/v activated carbon, (2) acidification of fermentation broth (Amberlite® IRA120) and (3) adsorption of lactic acid by anion exchange (Amberlite® IRA67). At the end of the purification process, 80.4% (w/w) D-lactic acid was recovered with 91.8% (w/w) purity, indicating the effectiveness of the developed downstream process. Furthermore, a clear yellowish solid polymer with a molecular weight of 3010 Da was obtained, suitable for ...
The present invention relates to iodine demand disinfectants. It relates in particular to a process for preparing a polyiodide-resin for use as an iodine demand disinfectant wherein a porous strong base anion exchange resin in a salt form, is contacted with a material capable of donating a member absorbable by the resin so as to convert the resin to the polyiodide-resin. The adsorbable member is selected from the group comprising I2 and polyiodide ion having a valence of -1. The process is characterized in that conversion of the anion exchange resin to the polyiodide-resin is effected at elevated temperature and elevated pressure, the elevated temperature being 100 degrees C or higher, the elevated pressure being greater than atmospheric pressure. The present invention also relates to disinfectant substance comprising an iodine (impregnated) resin as produced by the above process.
Nanocomposite sorbents are an emerging technology for drinking water treatment of multiple pollutants. Here, we used anticipatory life cycle assessment to proactively guide sustainable development of nanocomposite sorbents by comparing synthesis methods and treatment options, identifying critical steps in de Sustainable Nanotechnology Organization 2015
As one of the leading weakly basic anion resin manufacturers and suppliers in China, we warmly welcome you to wholesale discount weakly basic anion resin made in China here from our factory. All our customized water filtration medias are with high quality and competitive price. Contact us for free sample, pricelist and quotation.
Prior art available in the literature is about the recovery of extraction solvent from degraded lean solvent stream. However, IIP has developed adsorption process for removal of salt from aqueous NMP. In this process aqueous NMP is first treated with a conditioned anion exchange resin to remove chlorides and any acidity. This is followed by treatment with cation exchange resin to remove added alkalinity. But this process does not work when salt content levels are higher than 5000 ppm. Moreover, additional infrastructure i.e. ion exchange columns are needed for this route. But present invention deals with altogether different problem i.e. recovery of extraction solvent from highly concentrated brine solution. To date no solution of such problem is discussed in the open literature. Also no patent is available. The present invention is a new idea generated in our laboratory ...
Learn more about a strategy to expand viable and undifferentiated hASCs in this application note. A significant quantity of mesenchymal stem cells were generated for research and future cellular therapeutic approaches using the Corning HYPERFlask® vessel and via cells injected or inoculated into the Corning CellSTACK®.
Millions of people across the Indian subcontinent are at risk of chronic exposure to arsenic and fluoride in aquifers with excess TDS (|500 mg/L). Hybrid anion exchange resins with nanoparticles of zirconium oxide (HAIX-NanoZr) were created for effective fluoride removal; zirconium oxide selectively bound fluoride, silica, and phosphate. The zeta potential of HAIX-NanoZr was directly correlated to the fluoride removal capacity. Thus, to increase fluoride capacity and achieve partial desalination concurrently, a weak acid cation (WAC) exchange pretreatment was used to lower alkalinity, hardness, pH, and TDS. Consistent partial desalination (~50%) occurred in proportion to influent alkalinity and hardness. With regular acid conditioning of WAC, the fluoride capacity of HAIX-NanoZr increased 10x, 300 bed volumes (BVs) to 3500 BVs. Upon regeneration with 2% NaOH, |95% of capacity was restored; fluoride treatment was identical over three consecutive cycles with water from a fluoride-contaminated well (Nakuru
A broad and simple method permitted halide ions in quaternary heteroaromatic and ammonium salts to be exchanged for a variety of anions using an anion exchange resin (A− form) in non-aqueous media. The anion loading of the AER (OH− form) was examined using two different anion sources, acids or ammonium salts, and changing the polarity of the solvents. The AER (A− form) method in organic solvents was then applied to several quaternary heteroaromatic salts and ILs, and the anion exchange proceeded in excellent to quantitative yields, concomitantly removing halide impurities. Relying on the hydrophobicity of the targeted ion pair for the counteranion swap, organic solvents with variable polarity were used, such as CH3OH, CH3CN and the dipolar nonhydroxylic solvent mixture CH3CN:CH2Cl2 (3:7) and the anion exchange was equally successful with both lipophilic cations and anions.
A homogeneous catalyst, iron-tetrasulfophthalocyanine (FeTsPc), was electrostatically immobilized on the powdered anion exchange resin (Amb-FeTsPc) for the enha
57) Abstract:. The invention relates to methods for selection of individual amino acids (tyrosine and tryptophan) from their mixtures and can be used in chemical, food, microbiological industry and agriculture. The purpose of the invention is the separation of components of a mixture without the use of auxiliary reagents. It is achieved by passing hydrochloric acid solution of the amino acids at pH of 1.0 through a strong base anion exchange resin AV-17-2P in C1 form, followed by washing with water. The invention relates to a method of allocating individual aromatic and heterocyclic amino acids from mixtures thereof and can be used in chemical, microbiological, food industry, agriculture.. Known methods reagentless division and separation of individual amino acids by methods of ion-exchange chromatography. The closest solution to this invention the method of separation of L-serine and glycine chromatographic method [BP 0213736, C 07 C 99/12, 1987]. In addition, similar to the solution of the ...
With this mAb purification process, combining a Protein A capturing and a polishing step on a salt-tolerant anion exchange resin, dsp costs can be reduced by 45% and production output increased by 58%.
Read independent reviews on Thermo Scientific™ TCC-3000RS Rapid Separation Thermostatted Column Compartment from Thermo Fisher Scientific on SelectScience
SPE Part: 8B-S053-FBJ Strata™-XL-A 100 µm Polymeric Strong Anion, 200 mg / 3 mL, Tubes , 50/Pk Phase: Polymeric strong anion exchange Sorbent Type: Polymer-based Format: Tube Target Analytes: Weakly acidic compounds present in viscous samples
SPE Part: 8B-S123-ECH Strata™-X-A 33 µm Polymeric Strong Anion, 100 mg / 6 mL, Tubes , 30/Pk Phase: Polymeric strong anion exchange Sorbent Type: Polymer-based Format: Tube Target Analytes: Weakly acidic compounds
Browse Sigma-Aldrichs Anion Exchange Media to find products in Amberlite Strong Anion Exchangers, Amberlite® Weak Anion Exchangers, Diaion® Strong Anion Exchanger, Diaion® Weak Anion Exchangers, Dowex® Strong Anion Exchangers, Dowex® Weak Anion Exchangers, Lewatit® Strong Anion Exchanger, Lewatit® Weak Anion Exchanger
A method for the removal of a substance carrying a negative charge and being present in an aqueous liquid (I). The method comprises the steps of: (i) contacting the liquid with a matrix carrying a plurality of ligands comprising a positively charged structure and a hydrophobic structure, and (ii) desorbing the substance. The characterizing feature is that (I) each of said ligands together with a spacer has the formula: -SP-[Ar-R1-N+(R2R3R4)] where (A) [Ar-R1-N+(R2R3R4)] represents a ligand a) Ar is an aromatic ring, b) R1 is [(L)nR′1]m where n and m are integers selected amongst zero or 1; L is amino nitrogen, ether oxygen or thioether sulphur; R′1 is a linker selected among 1) hydrocarbon groups; 2) -C(═NH)-; c) R2-4 are selected among hydrogen and alkyls; (B) SP is a spacer providing a carbon or a heteroatom directly attached to Ar-R1-N+(R2R3R4); (C)-represents that SP replaces a hydrogen in (Ar-R1-N+(R2R3R4); (D)-represents binding to the matrix; and (II) desorption. There is also described (a)
Polar Strong Anion (PSA) Exchange - AccuBONDII Sorbents for SPE Chromatography, Agilent Technologies : Bulk sorbents for packing SPE cartridges or to
Gao, B., Wu, N. and Li, Y. (2005), Interaction between the strong anionic character of strong anions and the hydrophobic association property of hydrophobic blocks in macromolecular chains of a water-soluble copolymer. J. Appl. Polym. Sci., 96: 714-722. doi: 10.1002/app.21505 ...
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Fans of Netflixs Sweet Tooth are hoping for a second season to find out what happens to their favorite new hybrid characters after everything that happened in the finale. Find out all the big news here!
An eight-week gap between the first and second doses of the Pfizer/BioNTech Covid-19 vaccine is being recommended by scientists as a sweet spot to generate a strong immune response.
Tim Doyle - Sweet Limescreen print signed and numbered edition of 10018 x 24View all the prints from this show here, and all the original works here.
British novelist Ian McEwan discusses his new book, Sweet Tooth, a combination of a Cold War spy novel and a metafictional look at the nature of reading and writing.
Amino Resins are resins formulated by adding formaldehyde to amino compounds like melamine, benzoguanamine, or urea, then undergoing a condensation reaction and etherification with aliphatic monohydric alcohol. They are used as curing agents for thermosetting coatings. There are two types of amino resins: urea-formaldehyde (UF) and melamine-formaldehyde (MF). Neo Amino resins are based on Butylated melamine formaldehyde. They are soluble in alcohols, esters ketones, glycol ethers, aromatic hydrocarbons it has limited soluble in aliphatic hydrocarbons and is insoluble in water. NEO Amino resins are compatible with all short oil alkyds. Oil free polyester, medium and high molecular weight epoxy resin, epoxy ester ,thermosetting acrylics, and PVB resins. Being highly reactive and are used for curing of short oil alkyd, imparting excellent hardness, sharp gloss and mar- proofness to stoving system.. ...
This invention relates to high ortho etherified resole resins. The resole resins are prepared by reacting under acidic conditions phenol with formaldehyde in the presence of a divalent electropositive metal. The resole resins are then etherified with an alcohol and dehydrated to less than 1 percent water. The novel high ortho etherified resole resins are useful in coating, bonding and adhesive compositions. Such resoles are readily curable with coreactive resins providing chemical and solvent resistance.
QIAfilter Cartridges, provided in QIAfilter, HiSpeed, and EndoFree Plasmid Kits, are special filter units designed to replace centrifugation following alkaline lysis of bacterial cells. QIAfilter Cartridges completely remove SDS precipitates and clear bacterial lysates in a fraction of the time needed for centrifugation, reducing plasmid-purification time by up to 1 hour. QIAfilter Mega-Giga Cartridges operate with house vacuum to efficiently clear even large volumes of bacterial lysate with minimal effort. QIAfilter Mega and Midi Cartridges have a syringe format and lysates are cleared rapidly by pushing the liquid through the filter.. The unique anion-exchange resin in QIAGEN-tips is developed exclusively for the purification of nucleic acids. Its exceptional separation properties result in DNA purity equivalent or superior to that obtained by two successive rounds of CsCl gradient centrifugation. Prepacked QIAGEN-tips operate by gravity flow and never run dry, minimizing the hands-on time ...
Peptide-oligonucleotide conjugates were synthesized using two strategies: a mimetic signal peptide-conjugated oligonucleotide was assembled stepwise on CPG by using 2,2-dimethyl-3-hydroxypropionic acid as a linker. To solve the precipitation problem in the coupling reaction caused by the electrostatic interaction of arginine-rich peptides and oligonucleotide, oligonucleotides were absorbed on an anion-exchange resin, and then the on-resin fragment was applied for the conjugation with arginine-rich peptide. The peptide-antisense oligonucleotides showed permeability to the cell membrane of HepG-2 cells. ...
The MaxCyte® STX™ Scalable Transfection System uses a proprietary flow electroporation technology that can transfect up to 1E10 cells with target, reporter and protein expression plasmids, as well as other molecules, in less than 30 minutes. Transfected cells can be assayed immediately or cryopreserved for future use. Here we demonstrate the use of the MaxCyte STX system in coordination with Cornings ® HYPERFlask® Cell Culture Vessel to provide an efficient and economical solution for culturing large numbers of adherent CHO cells before and after transfection. The HYPERFlask Cell Culture Vessel features Cornings HYPER (High Yield PERformance) technology, which utilizes a gas permeable film to provide gas exchange between the internal culture environment and the external atmospheric environment. The unique, space-saving, 10-layer film design results in 1720 cm2 cell growth surface area, which is approximately 10 times that of a normal T-175 flask. We also show that cells transfected with a ...
UltraPure™ Agarose,UltraPure™ Agarose resolves DNA and RNA fragments from 100 bp to >30 kb. UltraPure™ Agarose is a standard melting temperature multi-purpose agarose that is ideal for routine separation analysis. Its high gel strength specification ensures that gels will not break during handling nor d,medicine,medical supply,medical supplies,medical product
Sucrose, Ultrapure Bioreagent, J.T.Baker™ 1kg; Poly Bottle Sucrose, Ultrapure Bioreagent, J.T.Baker™ Stau to Sz -Organics
Column chromatography After the initial fractionation steps we move to column chromatography. The mixture of substances (proteins) to be fractionated is dissolved in a liquid or gaseous fluid called the mobile phase. This solution is passed through a column consisting of a porous solid matrix called the stationary phase. These are sometimes called resins when used in liquid chromatography. The stationary phase has certain physical and chemical characteristics that allow it to interact in various ways with different proteins. Common types of chromatographic stationary phases Ion exchange Hydrophobic Gel filtration Affinity
Laboratoire de Phytopathologie Moleculaire, URA CNRS 1128, Universite Paris-sud, Orsay, France.. A new Arabidopsis thaliana (ecotype Columbia) genomic library has been constructed in Yeast Artificial Chromosomes: the CIC library (for CEPH, INRA and CNRS). Optimization of plant culture conditions and protoplast preparation allowed the recovery of large amounts of viable protoplasts. Mechanical shearing of DNA was minimized by isolation of DNA from protoplasts embedded in agarose. Cloning of large inserts was favored by including two successive size fractionation steps (after partial EcoRI digestion and after ligation with the vector arms), which selected DNA fragments larger than 350 kb. The library consists of 1152 clones with an average insert size of 420 kb. Clones carrying chloroplast DNA and various nuclear repeated sequences have been identified. Twenty-one per cent of the clones are found to contain chloroplast DNA. Therefore, the library represents around four nuclear genome equivalents. ...
Mouse Fibrinogen Purified from Innovative Research has been purified from plasminogen depleted Mouse Plasma using a combination of several chromatographic and fractionation steps. This is a frozen liquid buffered in 0.02M Sodium Citrate-HCl; pH 7.4, with a concentration of 2.0 mg/ml and a purity of >95%. This produc
RUN series resins are a new type of nylon resins prepared by blending a reinforcing material densely into a base polymer alloy consisting of both crystalline and amorphous nylons. The RUN series resins are composite materials only of UNITIKA own that are improved in bending resistance and appearance, frequently found problems in conventional glass-reinforced resins, made available by UNITIKAs proprietary polymer alloying technology, and have well-balanced properties suitable for use in applications including the automobile, electric/electronic, and machinery parts ...
In mice F4/80 is a well-established, yet not exclusive, macrophage marker. Anti-F4/80 MicroBeads UltraPure have been optimized for the rapid and simple isolation of mouse macrophages from single-cell suspensions from lymphoid and non-lymphoid tissues. The UltraPure MicroBeads greatly improve recovery and purity of the sorted population by specifically enriching viable cells. - USA
Albillos A, Cuervas-Mons V, Millan I, Canton T, Montes J, Barrios C, Garrido A, Escartín P. Ascitic fluid polymorphonuclear cell count and serum to ascites albumin gradient in the diagnosis of bacterial peritonitis. Gastroenterology. 1990 Jan 31;98(1):134-40 ...
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PLEASE NOTE: Order processing and delivery will be delayed as our warehouse staff are practicing social distancing and increased sanitization, and are not operating at full capacity. We apologize for any delays, but rest assured customer and staff safety remains our top concern. ...
China Supplier & Manufacturer Ion Exchange Resin Water Softener Resin,Cation Exchange Resin,Anion Exchange Resin,we offered that you can trust. Welcome to do business with us.
0087] Perchlorate selective anion exchange resins currently used for the removal of perchlorate in ground water were screened using a static beaker test for their potential application for the removal of perchlorate from typical sodium chlorate liquors. Purolite strong basic anion exchange resins A-530E were chosen for further evaluation using packed bed continuous flow operation. Purolite A-530E is a unique dual amine bi-functional resins that exhibit a high selectivity for perchlorate. The resins were originally developed and commercialized by Oak Ridge National Laboratories (ORNL) as D-3696 or BiQuat resins. Regeneration of the ion exchange resins using ferric chloride/hydrochloric acid in methanol as well as a high strength ferric chloride/hydrochloric acid regeneration methods as cited in U.S. Pat. No. 6,448,299 were also evaluated. A Bio-Rad 1×30 cm jacketed econo-column was filled with 20 cm3 of resins. The resins were hydrated in deionised water (DI) for at least 24 hours, prior to ...
Amberlite Resin is contains a stoichiometric equivalent mixture of uniform particle size gel polystyrene cation and anion exchange resins.
TA201D (recovery of heavy metals- Equivilent to Purolite A-500) TA201D is a strong base anion exchange resin of macroporous type, with polymer structrure as -N+(CH3)3 polystyrene. Its main application is used for preparation of pure water, recovery o
TY - JOUR. T1 - Fabrication of gadolinium hydroxide nanoparticles using ion-exchange resin and their MRI property. AU - Kobayashi, Y.. AU - Morimoto, H.. AU - Nakagawa, T.. AU - Kubota, Y.. AU - Gonda, K.. AU - Ohuchi, N.. N1 - Publisher Copyright: © 2016 The Ceramic Society of Japan and the Korean Ceramic Society.. PY - 2016/3/1. Y1 - 2016/3/1. N2 - This paper describes a method to fabricate gadolinium hydroxide (Gd(OH) 3 ) nanoparticles. An opaque solution was prepared by adding basic anion exchange resin (BAER) to a Gd(NO 3 ) 3 aqueous solution at room temperature and aging the solution for 12-24 h; the solution became basic because of the exchange of H 2 O with OH - . The particles in the opaque solution have a needle structure, and their crystal structure was hexagonal Gd(OH) 3 . Their longitudinal and lateral average particle sizes tend to increase in the ranges of 175.0-222.1 and 33.9-52.3 nm when the aging time increases from 12 to 24 h, respectively. The relaxivity value for T 1 ...
스티렌과 디비닐벤젠을 이용한 공중합체의 합성에 희석제로서 헵탄과 톨루엔을 사용하여 다공성 및 미세구조에 미치는 영향을 조사하였다. 스티렌디비닐벤젠 공중합체를 아미노화하여 음이온 교환수지를 합성하였으며 이 수지의 이온교환용량과 알코올 수용액에서 붕산에 대한 분포계수 값을 구하였고 이온교환 크로마토그래피와 질량분석기를 이용하여 붕소의 동위원소 분리효과를 연구하였다. For the separation of boron isotopes, aminated polystyrenedivinylbenzene ion-exchange resins were prepared by chloromethylation of styrene-divinylbenzene copolymer (DVB 10%), followed by the reaction of methylamine. During the preparation of styrene-divinylbenzene copolymer, heptane for the porous resin and toluene for the non-porous resin were used as diluent, and the pore volume of the resins was determined by mercury porosimeter. In both water and aqueous alcohol solutions, the
Deionization also called as Demineralization, is an ion exchange resin based process which can generate water, free of dissolved salt. DM process configuration includes basic cationic and anionic beds. Typically, the cation resin operates in the hydrogen cycle. The cations in the water (i.e. calcium, magnesium and sodium) pass through the canion exchange resin where they are chemically exchanged for hydrogen ions. The Water then passes through the anion exchange resin where the anions (i.e. chloride, sulphate, nitrate and bicarbonate) are chemically exchange for hydroxide ions. The final water from this process consists essentially of hydrogen ions and hydroxide ions, which is the chemical composition of pure water.. ...
AmberLite™ HPR9200 Cl Ion Exchange Resin is a Uniform Particle Size, Macroporous, Strong Base Anion Exchange Resin for Industrial Demineralization Applications. It is a robust, high-quality resin for use in industrial demineralization applications when a combination of exceptional physical stability, simple and reliable operation, and long resin life is required.
AmberLite™ IRN67 Ion Exchange Resin is Nuclear-grade, Gel, Acrylic, Weak Base Anion Exchange Resin for Water Treatment Applications in the Nuclear Power Industry It is designed specifically for use in nuclear loops where highest resin purity and stability are required, and where the supplied resin must have a minimum of ionic and non-ionic contamination.
Colestyramine (INN) or cholestyramine (USAN) (trade names Questran, Questran Light, Cholybar, Olestyr) is a bile acid sequestrant, which binds bile in the gastrointestinal tract to prevent its reabsorption. It is a strong ion exchange resin, which means it can exchange its chloride anions with anionic bile acids in the gastrointestinal tract and bind them strongly in the resin matrix. The functional group of the anion exchange resin is a quaternary ammonium group attached to an inert styrene-divinylbenzene copolymer. Colestyramine removes bile acids from the body by forming insoluble complexes with bile acids in the intestine, which are then excreted in the feces. As a result of this loss of bile acids, more plasma cholesterol is converted to bile acids in the liver to normalise levels. This conversion of cholesterol into bile acids lowers plasma cholesterol levels. Bile acid sequestrants such as colestyramine were first used to treat hypercholesterolemia, but since the introduction of statins, ...
J Mater Sci. DOI 10.1007/s10853-014-8333-x. Adsorption characteristics of noble metals on the strongly basic anion exchanger Purolite A-400TL. A. Wolowicz • Z. Hubicki. Received: 14 March 2014/Accepted: 16 May 2014. © The Author(s) 2014. This article is published with open access at Springerlink.com. Abstract Ion exchange is an alternative process for uptake of noble metals from aqueous solutions. In the present study, the sorption ofPd(II), Pt(IV), and Au(III) ions from aqueous solution was investigated by using Purolite A-400TL (strongly basic anion exchanger, gel, type I) in a batch adsorption system as a function of time (1 min-4 h). Initial Pd(II) concentration (100-1000 mg/L), beads size (0.425-0.85 mm), rate of phases mixing (0-180 rpm), and temperatures (ambient, 313 K) were taken into account during the Pd(II) sorption process. Moreover, the column flow adsorption study was carried out, and the breakthrough curves were obtained for Pd(II) ions. The equilibrium, kinetic, desorption, ...
FCT Water Treatment works with ResinTech as a supplier for high quality ION Exchange resins and membranes.. Ion exchange resins are particularly well suited for the removal of ionic impurities for several reasons: the resins have high capacities for ions that are found in low concentrations, the resins are stable and readily regenerated, temperature effects are for the most part negligible, and the process is excellent for both large and small installations.. ...
Since colestipol hydrochloride is an anion exchange resin, it may have a strong affinity for anions other than the bile acids. In vitro studies have indicated that colestipol hydrochloride binds a number of drugs. Therefore, COLESTID Tablets may delay or reduce the absorption of concomitant oral medication. The interval between the administration of COLESTID Tablets and any other medication should be as long as possible. Patients should take other drugs at least one hour before or four hours after COLESTID Tablets to avoid impeding their absorption.. Repeated doses of colestipol hydrochloride given prior to a single dose of propranolol in human trials have been reported to decrease propranolol absorption. However, in a follow-up study in normal subjects, single-dose administration of colestipol hydrochloride and propranolol and twice-a-day administration for 5 days of both agents did not affect the extent of propranolol absorption, but had a small yet statistically significant effect on its rate ...
The WECO Backwashing filter with A600E ion-exchange resin is a Point-Of-Entry (POE) filtration system for municipal and well water supplies. The main application of this filter system is removal of alkalinity, nitrate and uranium form well and municipal w
Oxidative damage to red blood cells (RBCs) may contribute to pathogenesis of sickle cell anemia. Reducing the deleterious effects of oxidants by exposing RBCs to a number of antioxidants has been shown to have protective effects against lipid and protein peroxidation. We hypothesize that antioxidants may also have beneficial effects on the abnormal membrane permeability of sickle cells. Increased cation permeability of these cells encourages HbS polymerization by causing RBC dehydration and also leads to externalization of the prothrombotic aminophospholipid phosphatidylserine (PS). Three antioxidants with different mechanisms of action were investigated - dithiothreitol, N-acetylcysteine, and quercetin. All three were found to inhibit the main cation pathways responsible for dehydration - the deoxygenation-induced cation conductance (or Psickle), the Ca2+-activated K+ channel (or Gardos channel), and the K+-Cl− cotransporter. They also reduced Ca2+-induced PS exposure and hemolysis. Findings provide
Salt catalysts containing basic anions and acidic cations for the sol-gel process of titanium alkoxide: controlling the kinetics and dimensionality of the resultant titanium oxide
Lagu V BTS Sweet Night kembali membuat kejutan. Lagu itu berhasil menduduki puncak chart Billboard. Hal itu diketahui setelah Billboard baru saja mengeluarkan rilisannya untuk chart Digital Song Sales untuk pekan 28 Maret 2020.. Dilansir dari Soompi, lagu ini berhasil menduduki peringkat ke #2 dengan 11.000 kopi pada minggu pertama perilisannya di Amerika Serikat. Seperti kalian tahu, Sweet Night juga menjadi salah satu OST drama Itaewon Class, yang dibintangi oleh sahabat V, Park Seo Joon.. Park Seo Joon dan V BTS telah berteman lama, bahkan mereka pernah beradu peran bersama dalam drama Hwarang. Inilah yang membuat keduanya kompak.. ...
Considering the performance of parent Fe(III)-Cu(II) binary oxide nanoparticles in removing numerous contaminants from water, in order to prevent the release of the nanostructures into the cleaned water a deposit with the same composition was introduced into the matrix of a synthetic porous material (ion exchange resin), whereby a hybrid ion exchanger (HIX) was obtained. Amberlite 900 Cl, a commercially available strongly basic macroreticular anion exchanger, was used as the supporting material. The inorganic deposit was introduced into its structure in two steps performed batchwise at ambient temperature. Fe(III)-Cu(II) binary oxide could be deposited into the matrix of the strongly basic anion exchanger owing to the affinity of its functional groups for FeCl4− and CuCl42− ions. When in the ion exchange reaction the anion exchanger bound both the ions and the reaction medium alkalized, the respective oxides FeOOH and CuO precipitated in its structure. The oxide deposit was introduced into ...
A new and distinct cultivar of |i|Echinacea |/i|plant named Sweet271, characterized by its upright and relatively compact plant habit; moderately vigorous growth habit; freely branching habit; stron
Sweet Magnolias star JoAnna Garcia Swisher tells Showbiz Cheat Sheet what surprises fans will find on her website The Happy Place.
Product Cat No. Pack Size ExtractMe Plasmid Maxi Endotoxin-Free Kit EM19-10 10 preps EM19-25 25 preps The EXTRACTME PLASMID MAXI ENDOTOXIN-FREE kit is designed for the efficient purification of high quality plasmid DNA from 200-1000 ml of cultured bacterial cells. The kit is based on modified anion-exchange resin, allowing extraction of ultrapure, transfection-grade pDNA, which is highly […]
Figure 2 Separation of a 1 µL sample injection using UHPLC. A flow rate of 0.8 mL/min, nearly half that of the HPLC separation, was used for elution of the sample using an X-PressPak C18S column with 2 µm particles (2.1 mm i.d. X 50 mm L). This resulted in an analysis time of 1.3 min, approximately 7 times faster than the HPLC separation. The gradient elution program of 1.5 min is 10 times shorter than that for HPLC.. Table II Comparison between UHPLC and conventional HPLC.. Table 2. Comparison between UHPLC and conventional HPLC ...
Invitrogen™ UltraPure™ Buffer-Saturated Phenol 400mL Invitrogen™ UltraPure™ Buffer-Saturated Phenol PCR Specific Buffers
Definition of anion exchange in the Legal Dictionary - by Free online English dictionary and encyclopedia. What is anion exchange? Meaning of anion exchange as a legal term. What does anion exchange mean in law?
Gel Filtration and Size Exclusion resins are employed in the separation of molecules based on size/shape. These resins are typically used for larger molecules like peptides and proteins, as well as, other biomolecules such as lipids, steroids and hormones
Synergy Ultrapure Water System,Water for Basic Laboratory Needs, Synergy systems produce ultrapure water from pre-treated water at a flow rate from 1 to 1.2 L/min to meet the basic needs of scientific laboratories. The Synergy 185 system incorporates a dual-wavelength UV lamp (185 nm and 254 nm) to produce water with low leve,medicine,medical supply,medical supplies,medical product
ORGANIC POLLUTANTS DEGRADATION USING PULSELESS CORONA DISCHARGE: APPLICATION IN ULTRAPURE WATER PRODUCTION - Ultrapure water;Corona discharge;Ozonation;Radical species;
This resin is part of the Sepharose Fast Flow ion exchange platform, which is well established in industrial downstream processing. Composed of crosslinked 6% agarose beads with diethylaminoethyl (DEAE) weak anion exchange groups, the resin has high chemical stability, allowing well-proven cleaning-in-place (CIP) and sanitization protocols.. Read more ...
Lead was also used, in later times, to seal tin cans when canning of meat was first introduced: they didnt understand the connection even in the 19th century. Sams long time successor in the Navy Victualling office in the 19th century decided that HM Navy should have the new tinned meat - the ratings were suspicious of the new food preferring the old salt pork (which Sams ratings would have had). They called the new canned meat sweet FA - commenting on the unknown origins of the meat. Sweet FA was Sweet Fanny Adams a London girl who was abducted, abused, murdered and dumped. The case was a newspaper sensation - she was always called Sweet Fanny Adams. The ratings were right to be suspicious: lead poisoning is thought to have been a main cause for the disaster of the vanished Franklin expedition to discover the NW passage. Probably language hat is now going to tell us all that this is *not* the derivation of sweet FA, but it is what I read somewhere (probably to do with the Franklin ...
Doctors and health care practitioners have long known that a good nights sleep is good for you - necessary, in fact, for overall health and well-being.
Historic BBQ is in Kansas City competing in the American Royal. Orders will not be shipped until I return on September 21st.. ...
The major advantages of monolithic phases are their ability to withstand high mobile phase flow rates and the rapid separations at low back pressure that can be achieved with their use.
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Samples are available in a variety of Corning Life Sciences plasticware products. 10- and 40-Stack CellSTACK® Culture Chambers, HYPERFlask® Cell Culture Vessel, microarray products and specialized microplates may be sampled with approval by Corning management. Corning excludes glassware and equipment from the sample offering. Sample volumes may vary based on the request from the customer. Sample request volumes greater than a single internal packaging unit (i.e. bag, rack, pack, and sleeve) must be approved by Corning management.. ...
Packing material, adsorbents for solid phase extraction. Silica modified with quaternary amine (SAX, strongly basic anion exchanger).
Antonio M. Munoz, Paul Yourik, Vaishnavi Rajagopal, Jagpreet S. Nanda, Jon R. Lorsch, Sarah E. Walker RNA Biology, 2017, VOL. 14, NO. 2,
UltraPure agarose and reagents are made from the highest purity biochemicals for superior performance and reliability in your nucleic acid analysis and purification protocols.
Here, we developed a straightforward methodology to generate TCRαβ negative (allogeneic) cells for CAR-T cell therapies. With an early and transient expression of an anti-CD3 CAR in the engineered donor T cells, we programmed these cells to self-eliminate the TCR+ cell population and obtained an ultrapure TCRαβ- population (99-99.9%) at the end of the CAR-T production. This novel and easy-to-implement procedure preserves the production yield and cell fitness and has the potential to streamline the manufacturing of
Explore the different options we offer in anion exchange chromatography. With columns specifically for polymers, proteins, peptides, DNA/RNA and carbohydrates.
Chromatography is an essential technology used for the purification of the biomolecules. Demand for the resins used for chromatography applications is growing with the rising applications of this technique. Chromatography resins are used in the process of separation and purification of the products and biomolecules in various methods used across different industrial verticals. Rising demand from different ...
strong anion exchanger, suspension in 20% ethanol and 150 mM NaCl (40-90 µm) Find MSDS or SDS, a COA, data sheets and more information.
Accell Plus ion exchange packings are 40µm, 300 angstrom polymer-coated silica-based materials and are available in strong anion and weak cation exchangers. These packings, for all preparative isolations based on ionic interactions, particularly proteins, enzymes and immunoglobulins and be packed into our Advanced Purification (AP) glass columns.
UREA FORMALDEHYDE RESIN of KF-ZH grade. GOST 14231-88 (HS code 390 910 9000). The resins are widely used in the process of production of plywood, gluing of furniture parts, joinery, for cored foundry mold, ground stabilization and also for press materials production, laminated plastics, plastic foam, adhesives, and coating of paper and textile processing.. ...
Vadim- I have re-nickelated Ni-NTA-agarose resins with varying success. I believe Qiagen provides a protocol for doing this. If I remember correctly, it involves stripping the resin with EDTA and then passing nickel sulfate over the column. Alternatively, I have also used Ni-NTA columns many more than 5 times and have had pretty good resolution. Since these resins are available for about $5/ml, I would suggest using the resin as long as you still get good resolution and then either replace it (if it is a relatively small volume), or attempting to regenerate it if it is a large volume ...
Dr. Jeff Lineberry presents a case study to explain how bulk-fill resins are proving to be a viable option for efficient and predictable posterior direct restorations.
Plexiglas® Impact modified grade resins are characterized by three primary features: toughness, heat resistance, and processability.
What does dental bonding involve?. To begin, the dentist will isolate the teeth included in the procedure, etching them in preparation for bonding. After applying the etching conditioning liquid, the surface of the teeth will have small crevices that allow the tooth stronger adhesion with the bonding agent. The dentist will then apply a bonding resin which cements the composite in place. After several layers of tooth-colored composite are applied, the composite and bonding resin are shaped and hardened with a specially calibrated light. Once the composite is fully set, the bonded areas are smoothed, buffed, and polished to blend in naturally with the surrounding teeth. If you want to regain confidence in your smile, contact our practice to learn more about bonding.. ...
... which are negatively charged anions. Anion-exchange resins relieve itching caused by excess bile acids in circulation by ... These anion-exchange resins are nonabsorbed, highly positively charged substances that bind bile acids, ... Bloating or constipation may occur with anion-exchange resins. Cholestyramine may affect absorption of UDCA; if cholestyramine ... Treatment options for pruritus that does not improve with anion-exchange resins include: rifampicin, naltrexone, or sertraline ...
44Ti is adsorbed onto column filled with anion-exchange resin. 44Sc is eluted with 20 mL of 0.005M H2C2O4/0.07M HCl solution. ... The eluate is directly post-processed on miniaturized column filled with cation-exchange resin where 44Sc is quantitatively ...
... s are polymeric compounds that serve as ion-exchange resins. Bile acid sequestrants exchange anions such ... The bile acid sequestrants are a group of resins used to bind certain components of bile in the gastrointestinal tract. They ... The bile-acid-binding resins can raise triglycerides modestly (about 5%) and cannot be used if the triglycerides are elevated. ... Three drugs are members of this class; all are synthetic polymeric resins: Cholestyramine (generic and various propriety names ...
The nanoparticles are produced by adding base anion exchange resin to gadolinium(III) nitrate. Logvinenko, V.; Bakovets, V.; ... "Fabrication of gadolinium hydroxide nanoparticles using ion-exchange resin and their MRI property". Journal of Asian Ceramic ...
"Chromatographic Enrichment of 10B by Using Weak-Base Anion-Exchange Resin". Separation Science and Technology. 21 (6): 643-654 ... A typical motif is exemplified by the tetraborate anions of the common mineral borax, shown at left. The formal negative charge ... For example, fluoride (F−) and boron trifluoride (BF3) combined to give the tetrafluoroborate anion, BF4−. Boron trifluoride is ... Isotopic fractionation of boron is controlled by the exchange reactions of the boron species B(OH)3 and [B(OH)4]−. Boron ...
Further, NDMA can form or be leached during treatment of water by anion exchange resins. Contamination of drinking water with ...
Anion resins and cation resins are the two most common resins used in the ion-exchange process. While anion resins attract ... An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange. It is an insoluble ... There are multiple types of ion-exchange resin. Most commercial resins are made of polystyrene sulfonate. Ion-exchange resins ... This, combined with a high rate of ion exchange, make weakly base anion resins well suited for the organic salts. For anion ...
"The determination of thyroxine by competitive protein-binding analysis employing an anion-exchange resin and radiothyroxine". ...
Positively charged molecules bind to cation exchange resins while negatively charged molecules bind to anion exchange resins. ... "Anion-Exchange Chromatography of Phosphopeptides: Weak Anion Exchange versus Strong Anion Exchange and Anion-Exchange ... 6 arginines for binding to a cation-exchange resin or 6 glutamates for binding to an anion-exchange resin such as DEAE- ... The two types of ion chromatography are anion-exchange and cation-exchange. Cation-exchange chromatography is used when the ...
... anion exchange membrane, cation exchange membrane, and resin. The most simplified configuration consists of 3 compartments, to ... Only anions can go through the anion exchange membrane and only cations can go through the cation exchange membrane. This ... Finally, they are replaced in resin exchange positions by hydroxyl anions and hydrogen cations. - Regeneration: the continuous ... The purpose of the ion exchange resin is to maintain stable conductance of the feed water. Without the resins, the conductance ...
A dealkalizer contains strong base anion exchange resin that exchanges chloride (the Cl- ion of the NaCl) for carbonate (CO− 3 ... In the case of a water softener, the cation exchange resin is exchanging sodium (the Na+ ion of NaCl) for hardness minerals ... As water passes through the anion resin the carbonate, bicarbonate and sulfate ions are exchanged for chloride ions. "Higher ... Chloride cycle anion ion-exchange dealkalizers remove alkalinity from water. Chloride cycle dealkalizers operate similar to ...
Correspondingly, anion-exchange resins are typically provided in the form of chloride Cl−, which is a highly mobile ... Ion-exchange resins are polymers with a net negative or positive charge. Cation-exchange resins consist of an anionic polymer ... Depending on their charge, proteins are associated with a variety of smaller anions and cations. In plant cells, the anion ... The solubility of cations in organic solvents can be enhanced when the anion is lipophilic. Similarly, the solubility of anions ...
This exchange is utilized to separate proteins that have faintly differing charges. Like all anion exchangers, the resin ... "Whatman® anion exchange cellulose DE52". Sigma-Aldrich. Retrieved 11 May 2016. Reuveny, S.; Silberstein, L.; Shahar, A.; ... Diethylaminoethyl cellulose (DEAE-C) is a positively charged resin used in ion-exchange chromatography, a type of column ... The resin is a weak exchanger because it is only partially ionized over most pH values, and an efficient separation with DEAE-C ...
Alkali anion exchange membrane Ion Ion chromatography Ion-exchange membranes Ion-exchange resin Desalination Reverse osmosis ... which contain a mixture of anion- and cation-exchange resins, or passing the solution through several different ion-exchange ... Thus, ion-exchange is used in nuclear reprocessing and the treatment of radioactive waste. Ion-exchange resins in the form of ... Most ion-exchange systems use columns of ion-exchange resin that are operated on a cyclic basis. During the filtration process ...
... such as ion-exchange resins. Anion-exchange membranes contain fixed cationic groups with predominantly mobile anions; because ... and the anion exchange membranes used in certain alkaline fuel cells to transport OH− anions. An ion-exchange membrane is ... anions are the majority species, most of the conductivity is due to anion transport. The reverse holds for cation-exchange ... When applied in an electrodialysis desalination process, anion- and cation-exchange membranes are typically arranged in an ...
... was awarded to Arup K Sengupta for his invention and implementation of ArsenXnp hybrid anion exchange (HAIX) resin. The ...
The plant comprises three groups of cation, anion and mixed bed ion exchange resin units, together with vacuum degassing and ...
Traditional anion exchange resins are effective in removing As(V), but not As(III), or arsenic trioxide, which doesn't have a ... Ion exchange and activated alumina have been considered but not commonly used. Chaff-based filters have been reported to reduce ... Ion exchange has long been used as a water softening process, although usually on a single-home basis. ... Effective long-term ion exchange removal of arsenic requires a trained operator to maintain the column. Both reverse osmosis ...
It is a strong ion exchange resin, which means it can exchange its chloride anions with anionic bile acids in the ... The functional group of the anion exchange resin is a quaternary ammonium group attached to an inert styrene-divinylbenzene ... gastrointestinal tract and bind them strongly in the resin matrix. ...
Mixed bed deionization is a 50/50 mixture of cation and anion resin combined in a single ion-exchange column. With proper ... A control system operates pumps and valves for the regenerants of spent anions and cations resins within the ion exchange ... Deionization is a chemical process that uses specially manufactured ion-exchange resins, which exchange hydrogen and hydroxide ... except by incidental trapping in the resin. Specially made strong base anion resins can remove Gram-negative bacteria. ...
... and anion-cation exchange resin columns. Sulfolane is also added to hydrofluoric acid as a vapor suppressant, commonly for use ...
... macroreticular anion exchange resin over a 2-year period.: 45 Gas centrifuge, laser isotopic separation and gas diffusion ... Kawakami, Fumiaki (September 1, 2011). "Plant designing of ion exchange chemical uranium enrichment and its non-proliferation ...
It is usually followed by anion-exchange chromatography using 6 molar HCl as eluant. A cation-exchange resin column (Dowex-50 ... Separation of trivalent actinides from lanthanide fission products can be done by a cation-exchange resin column using a 90% ... The actinide elution sequence is reversed from that of the cation-exchange resin column. The einsteinium separated by this ... In this case, isolation of einsteinium is a tedious procedure which involves several repeating steps of cation exchange, at ...
The anionic actinide complexes are retained by anion exchange sites that are on the resin and neutral species pass through the ... typically by changing the mobile phase passed through the resin bed. Anion exchange-based separations of actinides, while ... Anion exchange separation methods are widely used in the purification of actinides and actinide bearing materials through the ...
... resins, and liquid organics impregnated with chelating agents are all used to exchange cations or anions with the solution.[ ... Solvent Extraction Ion Exchange Gas reduction. Treating a solution of nickel and ammonia with hydrogen affords nickel metal as ... The metal will be exchanged from the organic to the electrolyte. The resulting streams will be a stripped organic and a rich ... Tasker, Peter A.; Tong, Christine C.; Westra, Arjan N. (2007). "Co-extraction of cations and anions in base metal recovery". ...
... strongly basic anion exchange resins, dye leveling agents and a number of basic dyes. Gas sensors to test for fish freshness ... strongly basic anion exchange resins, dye leveling agents, and a number of basic dyes. At higher concentrations it has an ...
... readily measurable species to be released by a spent anion exchange resin and is therefore used as the trigger for anion resin ... The conductivity of cation exchange effluent is always quite high due to the presence of anions and hydrogen ion and therefore ... The anion analysis for seven most common inorganic anions (sulfate, chloride, fluoride, phosphate, nitrite, nitrate, and ... polishing by ion exchange resins or electrodeionization (EDI), and finally filtration or ultrafiltration. Some systems use ...
Anion exchange resins will bind to negatively charged molecules, displacing the counter-ion. Anion exchange chromatography is ... Anion-exchange chromatography is a process that separates substances based on their charges using an ion-exchange resin ... If it is stable at pH values above the pI then the anion exchange column can be used. Lee, Y.C. (1990). "High-performance Anion ... The stability of the protein at values above or below the pI, will determine if an anion exchange column or cation exchange ...
... ion exchange resins MeSH D27.720.470.420.050 - anion exchange resins MeSH D27.720.470.420.275 - cation exchange resins MeSH ...
... a peptide binding efficiently to anion-exchange resin such as Mono-Q (EEEEEE) polyarginine tag, a peptide binding efficiently ... to cation-exchange resin (from 5 to 9 consecutive R) E-tag, a peptide recognized by an antibody (GAPVPYPDPLEPR) FLAG-tag, a ...
... exhibit a dynamic range greater than 104-fold in stability based on anion exchange or solvent exchange - Illustrated that these ... Wiesner groups at Cornell to create reactive solvent-free nanofluids to create new resins and materials and exotic cross- ...
Tulla-Puche J.; Barany G (2005). "Development of resin-to-resin transfer reactions (RRTR) using Sonogashira chemistry". ... The result is competition between the amine and the alkyne group for this ligand exchange, which is why the amine is generally ... which could be the real catalysts in the presence of anions and halides. The active Pd0 catalyst is involved in the oxidative ... There are also examples of the coupling partners both being attached to allyl resins, with the Pd(0) catalyst effecting ...
The ion-exchange resins act to retain the ions, allowing these to be transported across the ion-exchange membranes. The main ... prevented from further migration toward the cathode by the positively charged anion-exchange membrane. As a result of the anion ... compartment formed by an anion exchange membrane and a cation exchange membrane placed between two electrodes. In almost all ... These ions pass through the positively charged anion-exchange membrane, but are prevented from further migration toward the ...
H2O NaO3 and LiO3 must be prepared by action of CsO3 in liquid NH3 on an ion-exchange resin containing Na+ or Li+ ions: CsO3 + ... Reduction of ozone gives the ozonide anion, O− 3. Derivatives of this anion are explosive and must be stored at cryogenic ... It is isoelectronic with the nitrite anion. Naturally occurring ozone can be composed of substituted isotopes (16O, 17O, 18O). ...
Available forms include anion and cation exchangers, as well as gel filtration resins, with varying degrees of porosity; bead ... "Sephadex® ion exchange media" (PDF). chembio.uoguelph.ca. Pharmacia Biotech. GE Healthcare. "Sephadex LH-20". Retrieved 2019-12 ... Sephadex is also used for buffer exchange and the removal of small molecules during the preparation of large biomolecules, such ... Sephadex is also used for ion-exchange chromatography. Sephadex is used to separate molecules by molecular weight. Sephadex is ...
"Sequential Anion and Cation Exchange Reactions for Complete Material Transformations of Nanoparticles with Morphological ... must be used with curable resins containing solid particle dispersions of the thermoelectric material of choice, and inkjet ... Cation exchange is the process of surrounding a parent crystal with an electrolyte complex, so that the cations (positively ... As to why it was thought to improve the ZT value, the mechanics of cation exchange often bring about crystallographic defects, ...
The principle is that an ion exchange resin can remove potentially toxic metals (cationic resins), or chlorides, sulfates and ... As the silicate anion captures H+ ions (raising the pH), it forms monosilicic acid (H4SiO4), a neutral solute. Monosilicic acid ... Once the contaminants are adsorbed, the exchange sites on resins must be regenerated, which typically requires acidic and basic ... In the bulk solution, the silicate anion is very active in neutralizing H+ cations in the soil solution. While its mode-of- ...
were granted a patent for a CO2 extraction device from seawater, in the form of an electrolytic-cation exchange module (E-CEM ... Previous studies had concluded that CO2, under the form of the bicarbonate anion (HCO3-) dominant (96% mole fraction) in the ... "Separation and recovery of food coloring dyes using aqueous biphasic extraction chromatographic resins". Journal of ... "Separation and recovery of food coloring dyes using aqueous biphasic extraction chromatographic resins". Journal of ...
Ion-exchange resins are based on special organic polymer membranes which contain a specific ion-exchange substance (resin). ... Selectivity of crystalline membranes can be for both cation and anion of the membrane-forming substance. An example is the ... Usage of specific resins allows preparation of selective electrodes for tens of different ions, both single-atom or multi-atom ... Glass membranes are made from an ion-exchange type of glass (silicate or chalcogenide). This type of ISE has good selectivity, ...
Practice for Evaluating the Kinetic Behavior of Ion Exchange Resins D6304 - 16e1 Test Method for Determination of Water in ... Groundwater and Drinking Water Using Anion Exchange Chromatography with UV Detection D6995 - 05(2013) Test Method for ... Test Methods for Softening Point of Hydrocarbon Resins and Rosin Based Resins by Automated Ring-and-Ball Apparatus D6494 - 99( ... Test Method for Testing Alkyd Compatibility with Resin or Resin Solutions D6888 - 16 Test Method for Available Cyanides with ...
... silicic acids can be prepared by removing the sodium cations from solutions of sodium silicates with an ion-exchange resin, or ... Like the silicate anions, which are their better known conjugate bases, silicic acids are proposed to be oligomeric or ... Silicic acids and silicates in solution react with molybdate anions, yielding yellow silicomolybdate complexes. This reaction ...
Ion exchange processes in the resins result in separation of uranium. Uranium from resins is washed with a solution of ammonium ... Actinides with oxidation state +6, except for the AnO22+-type cations, form [AnO4]2−, [An2O7]2− and other complex anions. For ... Thus actinium is either synthesized in nuclear reactions from isotopes of radium or separated using ion-exchange procedures. ... Another separation method uses polymeric resins as a polyelectrolyte. ...
... monolithic anion-exchange chromatography as a useful alternative to CsCl gradient purification of bacteriophage particles". ... Slovenia to commercialize a new chromatographic resin based on monolith technology. Monolithic resin was developed ... "Adsorption behavior of large plasmids on the anion-exchange methacrylate monolithic columns". Journal of Chromatography A. 1218 ... "Rapid high-performance liquid chromatographic analysis of adenovirus type 5 particles with a prototype anion-exchange ...
I. Hydrogen Exchange and Polycondensation of Methane and Alkanes in FSO3H-SbF5 ("Magic Acid") Solution. Protonation of Alkanes ... The Jeffrey pine is noted for producing exceptionally high levels of n-heptane in its resin, for which reason its distillate ... usually a carbocation and the very unstable hydride anion. Carbon-localized free radicals and cations are both highly unstable ...
... ligand-exchange chromatography, ion-exchange chromatography of proteins, high-pH anion-exchange chromatography of carbohydrates ... Polystyrene resins allow cross linkage which increases the stability of the chain. Higher cross linkage reduces swerving, which ... A decrease in pH reduces the retention time in cation exchange while an increase in pH reduces the retention time in anion ... In ion-exchange chromatography (IC), retention is based on the attraction between solute ions and charged sites bound to the ...
SpyDock can be expressed in E. coli as soluble protein, purified using Ni-NTA and anion-exchange resins and immobilized to ... SpyDock-bound proteins are eluted by incubating the resin with 2.5 M imidazole in neutral buffer. The SpyDock resin can be ... SpyDock resin is compatible with all SpyTag generations (SpyTag, SpyTag002, SpyTag003) and it does not interfere with the later ... Non-specifically bound proteins are removed by washing the resin with a neutral buffer and the target protein eluted at neutral ...
A common method for water softening involves the use of ion-exchange resins, which replace ions like Ca2+ by twice the number ... and carbonate and bicarbonate anions (CO2− 3 and HCO− 3). The presence of the metal cations makes the water hard. However, ... The softening of hard water by ion exchange does not increase its corrosivity per se. Similarly, where lead plumbing is in use ... Ions causing permanent hardness of water can be removed using a water softener, or ion-exchange column. Temporary hardness is ...
... the ionic groups of an ion-exchange resin). Such interactions generally involve electrostatic forces and van der Waals forces, ... anion A negatively charged ion; i.e. an atom or molecule with a net negative electric charge caused by an excess of electrons ... Negatively charged anions always move toward the anode. Contrast cathode. aqua regia A liquid mixture of nitric acid (HNO3) and ... hydroxide A diatomic anion consisting of a hydrogen atom covalently bonded to an oxygen atom, having an overall negative charge ...
The cobalt(III) anion [Co(EDTA)]− has been resolved into enantiomers. Many complexes of EDTA4− adopt more complex structures ... EDTA was used in separation of the lanthanide metals by ion-exchange chromatography. Perfected by F. H. Spedding et al. in 1954 ... EDTA causes the lanthanides to migrate down the column of resin while separating into bands of pure lanthanides. The ... Due to the expense of this method, relative to countercurrent solvent extraction, ion exchange is now used only to obtain the ...
China CATION EXCHANGE RESIN, China ANION EXCHANGE RESIN ... ANION EXCHANGE RESIN. Jiangsu Suqing Water Treatment ... Anion exchange Resins. Jiangsu Suqing Water Treatment Engineering Group Co., Ltd. More>>. ... ION EXCHANGE RESIN. CAS NO:104219-63-8;11128-96-4;. Jiangsu Suqing Water Treatment Engineering Group Co., Ltd. More>>. ... CATION EXCHANGE RESIN. Jiangsu Suqing Water Treatment Engineering Group Co., Ltd. More>>. ...
For more information on the weak base anion exchange resins we offer, visit over to our website! ... Purolite manufactures two types of weak base anion ion exchange resins: gel and macroporous. ... Overview Biocatalysis Screening Ligand Addition Protein Ion Exchange Chromatography Reference / Calibration Reversed Phase ...
Professor Limin WANG, one of the company founders and disciple of Chinese resin ancestor Binglin HE, has ample experience in ... resin MFG and R&D. The company owns a professional high-tech research and development team, with a number of world-class resin ... It is a functional resin company integrating R&D, MFG, sales and service, mainly for international sales. ... SH Scenic Resin Co. Ltd. is located in Shanghai Pudong Senlan Economic Park. ...
Anion exchange resins produced in industry are mostly made of styrene divinylbenzene copolymer spheres as the skeleton,and ... Strong base anion exchange resin (SBA) * 201X2 Strong base anion exchange resin ... Strong base anion exchange resin (SBA) *201X2 Strong base anion exchange resin ... Strong acid cation exchange resin (SAC) * 001X4 Strong acid cation exchange resin ...
The extraction of platinum and palladium from a synthetic cyanide heap leach solution with strong base anion exchange resins ... The elution of platinum and palladium cyanide from strong base anion exchange resins. ... The elution of platinum and palladium cyanide from strong base anion exchange resins. International Journal of Mineral ... Ion exchange resins were investigated for the effective recovery of platinum, palladium, and gold from a pregnant cyanide heap ...
Anion exchange resin-Sichuang YiNeng KS Environmental Protection Technology co.,LTD ... Introduction to anion exchange resin. Q/510101YNKS 002-2020. The main role of anion exchange resin in the application of ion- ... 2, the exchange capacity is large. The resin has a large exchange capacity for the above-specific anion exchange, and is more ... than twice the exchange capacity of ordinary anion exchange resins;. 3, structural stability. The resin structure strength is ...
Anion Exchange Resin and Cation Exchange Resin Your current location: Home >> News >> Ion exchange resin knowledge ... Anion exchange resins can be divided into cationic resins, anionic resins, double-bed resins, polishing core-grade resins and ... Strong Acid Cation Resin Series Weak Acid Cation Resin Series Strong Base Anion Resin Series Weak Base Anion Resin Series Food ... Anion Exchange Resin and Cation Exchange Resin. Date of release:2019-03-15 Author: Click:. ...
Anion exchange resins. Our anion exchange resins are available as 4 % and 8 % divinylbenzene (DVB) cross-linked polymers but ... All anion exchange resins are provided in chloride (Cl-) form. Typical applications are: exchange of anions of salts; cyclic ... Ion exchange resin ROTI®Change 1 x 4 100-200 mesh, analytical grade, Cl--form. ... The corresponding polystyrene based resins were specially purified to reduce extractable residues to less than 1 mg/g resin. ...
AMBERLITE IRN-150 (MIXED BED RESIN) (STRONGLU ACIDIC CATION AND STRONGLY BASIC ANION EXCHANGE RESIN). د.إ200.00 ... AMBERLITE IRN-150 (MIXED BED RESIN) (STRONGLU ACIDIC CATION AND STRONGLY BASIC ANION EXCHANGE RESIN) quantity. ... AMBERLITE IRN-150 (MIXED BED RESIN) (STRONGLU ACIDIC CATION AND STRONGLY BASIC ANION EXCHANGE RESIN) ...
... ion exchange resin at a very slow rate. An anion exchange resin, such as a styrene/divinylbenzene anion exchange resin is ... exchange resin to purify the novolak resin solution, comprising: a) washing an anion exchange resin with water followed by ... an anion exchange resin is unexpectedly effective for removing cations. Generally, an anion exchange resin is used to remove ... b) preparing a solution of a novolak resin in a suitable novolak resin solvent; c) washing the anion exchange resin with a ...
The acrylic matrx guarantees longer operation life than polystyrene based resins - Sunresin. ... This resin has outstanding stability and resistance to organic fouling and specially used in the purification of organic acids ... Weak Base Anion Exchange Resin » Purification of Organic Acids » SEPLITE® CM1670 Gel, weak base anion resin ... weak base anion resin Descriptions. SEPLITE® Monojet™ CM1670 Ion Exchange Resin is a narrow particle size weak base anion based ...
Use of anion exchange resin-packed capillary column for rapid detection of anti-double-stranded DNA antibody in systemic lupus ... Use of anion exchange resin-packed capillary column for rapid detection of anti-double-stranded DNA antibody in systemic lupus ... Use of anion exchange resin-packed capillary column for rapid detection of anti-double-stranded DNA antibody in systemic lupus ... T1 - Use of anion exchange resin-packed capillary column for rapid detection of anti-double-stranded DNA antibody in systemic ...
... by using the anion exchange resin. For MS2, the anion exchange resin method allowed for an average improvement in detection of ... Here, we adapted an anion exchange resin-based method, initially developed to concentrate negatively charged viruses from water ... and further concentrated via adsorption to an anion exchange resin that is suspended within this liquid. Viral nucleic acids ... and sampled using BioSamplers with and without anion exchange resin. Compared to direct testing of the BioSampler liquid, ...
Sr and Am/Cm isotopes with an anion exchange resin, UTEVA resin, Sr resin and DGA resin in environmental samples. After the ... Finally, Am/Cm fractions were purified with the DGA and anion exchange resins. After α source preparation for the purified Pu, ... uranium and americium/curium isotopes in environmental samples with anion exchange, UTEVA, Sr and DGA resin. ... Sequential anion-exchange separation of trace U, Th, Pb and lanthanides in environmental samples. ...
Charcoal and anion exchange resin columns in the circuit cleanse and regenerate the albumin dialysate. Clinical studies have ... and exchange transfusions, have been used; however, no controlled study has shown long-term benefit. ...
A thermo-stable anion exchange resin-Raney Cu system was found as the most effective solid catalyst for low-temperature liquid- ... Novel anion exchange resin-based catalyst for liquid-phase methanol synthesis at 373-393 K. Aika, Ken-Ichi,Kobayashi, Hidenobu, ... Simultaneously the ion exchange between Cu(acac)2 and NH4Y occurs at about 174 °C. During the activation process from 230 to ... The mechanism of dimethyl carbonate synthesis on Cu-exchanged zeolite Y. Zhang, Yihua,Bell, Alexis T.. , p. 153 - 161 (2008). ...
239000003957 anion exchange resin Substances 0.000 description 3 * 229910001385 heavy metal Inorganic materials 0.000 ... 239000003456 ion exchange resin Substances 0.000 claims description 9 * 229920003303 ion-exchange polymer Polymers 0.000 claims ... 238000005349 anion exchange Methods 0.000 claims description 15 * 238000005516 engineering process Methods 0.000 claims ... 239000003729 cation exchange resin Substances 0.000 claims description 10 * MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide ...
... comprehensive portfolio of ion exchange water-treatment and separation products support optimal plant productivity in multiple ... DuPont™ AmberLyst™ Ion Exchange Resin is a highly porous, granular, weak base anion exchange resin based on crosslinked phenol- ... DuPont™ AmberLyst™ Ion Exchange Resin is a highly porous, granular, weak base anion exchange resin based on crosslinked phenol- ... MB premixed strong acid cation and strong base anion exchange resins.. For fossil power plants. Our ion exchange resins, chosen ...
Methylmalonic acid (MMA) is extracted from plasma along with an added internal standard using an anion exchange resin. The ...
Isomaltulose-forming microorganisms are immobilized on a carrier that is a weakly basic anion exchange substance in the form of ... synthetic anion exchange resins such as phenolformaldehyde resins, acrylic resins and polystyrene resins, as well as agarose or ... The anion exchange material useful as a carrier in the present invention should have an anion exchange capacity which renders ... dextrin based anion exchange resins. The preferred carrier is a porous, particulate anion exchange substance derived from ...
George RH, Youngs DJ, Johnson EM, et al. Anion-exchange resins in pseudomembranous colitis. Lancet 1978;2:624. ...
Factors affecting the amount of phosphate extracted from soil by anion exchange resin. Barrow, N. J. & Shaw, T. C., 1 Jan 1977 ...
Cholestyramine is a nonabsorbable anion exchange resin that selectively binds bile salts, fatty acids, and intestinal oxalate. ... In the kidney, oxalate is secreted in the proximal tubule via 2 separate carriers involving sodium and chloride exchange. ... Because chloride is released from the resin, hyperchloremic acidosis is a potential complication. Cholestyramine interferes ...
effective adsorption and desorption of naturally occuring organic substances anion exchange resin ...
Shanghai, China). AMBERLITE FPA98 CI macroporous anion exchange resin was purchased from Rohm and Haas (Philadelphia, PA). ... A natural heparinoid was obtained from the clam C. antiquata by enzymatic hydrolysis, ion exchange, and ethanol precipitation. ...
Ion exchange, using nitrate specific anion exchange resins, can be used to remove nitrate ions from water. Water is passed ... Ion-exchange resin. A synthetic organic ion-exchange material, used for example in ion-exchange softeners and nitrate removal ... through a bed of anion exchange resin and the anions in the water, including nitrate, are replaced by chloride ions. The resins ... Conventional anion exchange resins have a higher affinity for sulphate than for nitrate. This means that they preferentially ...
Anion Exchange (AIX) This method uses synthetic resins, produced from polymeres with charged groups. These resins retain the ... Ion-exchange resins (IX) (coombined with destructive methods to treat regeneration fluids) ...
  • The typical operating capacity of a weak base anion exchange resin is 70 to 90 % of the total capacity. (dardel.info)
  • Ion exchange resins are made by organic synthesis. (sgrhb.com)
  • SEPLITE® Monojet™ CM1670 Ion Exchange Resin is a narrow particle size weak base anion based on acrylic polymer matrix.This resin has outstanding stability and resistance to organic fouling and specially used in the purification of organic acids in food applications. (seplite.com)
  • DuPont™ AmberLite™ SCAV organic scavenging resins. (dupont.com)
  • Dissolved organic matter removal using magnetic anion exchange resin treatment on biological effluent of textile dyeing wastewater. (semanticscholar.org)
  • TRILITE AMP14 is recommended as the working anion exchanger in demineralizers or condensate polishing, used as a protective measure against organic fouling of anion exchangers in multi-stage or mixed bed type demineralizers. (watermart.co.id)
  • Preconcentration and purification of the initial generator eluate are performed using a miniaturized column with organic cation-exchanger resin and hydrochloric acid/acetone eluent. (snmjournals.org)
  • Ionic exchange modification mechanism between organic modifier and Lou soil]. (dbcls.jp)
  • AmberLite™ FPC cation exchange resins. (dupont.com)
  • EP-B-0 049 801 discloses the immobilization of a sucrose converting enzyme isolated from P. rubrum on various carrier materials such as hollow fibers or cation exchange resins. (justia.com)
  • it can be also used in sugar making industry, the strongly basic exchange group and macroporous structure are helpful to the absorption of pigment and impurity in sugar solution. (scenicresin.com)
  • A strongly basic anion exchange resin whose main constituent is polystyrene trimethylbenzylammonium Cl(-) anion. (nih.gov)
  • Prefilter (to remove particulate distilled water is free of ammonia, by passing interferences): 37-mm cellulose ester it through an ion exchange column comprised membrane filter (0.8-µm pore size) of a mixture of both strongly acidic cation and supported by stainless steel screen in two strongly basic anion exchange resins. (cdc.gov)
  • This second case is typical of strongly acidic and strongly basic resins, which are more difficult to regenerate, so that an excess of regenerant chemical must be passed through the resin bed. (dardel.info)
  • Weak and strong acid cation exchangers and weak base anion exchangers are used for this purpose and the demineralized whey can then be used in various food applications, or to recover proteins or lactose. (dupont.com)
  • Ion exchange resins, combined with membrane technologies, are used to purify whey - a byproduct of the production of cheese - by removing mineral salts. (dupont.com)
  • STIC is a salt-tolerant anion-exchange membrane effective at removing contaminants in buffers containing up to 200 mM NaCl, saving time and reducing costs by avoiding buffer changes. (bioprocessintl.com)
  • To prevent this damage, power producers traditionally used a combination of membrane separation and ion exchange processes to remove impurities from their feed water. (mpwservices.com)
  • EDI combines ion-exchange membrane technology with ion-exchange media to provide a high efficiency demineralization process. (mpwservices.com)
  • That is to say, the ions in the resin exchange with the ions in the solution, so that the ions in the solution can be separated. (sgrhb.com)
  • Firstly, it can be divided into cationic resins and anionic resins, which can exchange ions with cations and anions in solution respectively. (sgrhb.com)
  • The present invention provides methods for producing water insoluble, aqueous alkali soluble novolak resins having a very low level of metal ions, utilizing a specially treated anion exchange resin. (everypatent.com)
  • A method is also provided for producing photoresist composition having a very low level of metal ions from such novolak resins and for producing semiconductor devices using such photoresist compositions. (everypatent.com)
  • and d) passing the solution of novolak resin through the washed anion exchange resin bed at a flow rate such that the residence time is greater than 60 minutes, and thereby providing a level of sodium and iron ions in the novolak resin solution of less than 100 ppb each. (everypatent.com)
  • 5. The method of claim 1 wherein the level of sodium ions in the novolak resin produced by the method of claim 1 is less than 50 ppb. (everypatent.com)
  • The present invention relates to a process for producing novolak resins having a very low level of metal ions, especially sodium and iron, and for using such novolak resins in light-sensitive compositions. (everypatent.com)
  • Ion exchange is a cyclic process: ions are loaded to resins, the resins get progressively exhausted, and when there is no place to load more ions, the loading phase is interrupted, and the resins must be regenerated. (dardel.info)
  • In other words, the total capacity is the maximum theoretical quantity of ions that the resin can load. (dardel.info)
  • It is also the number of resin charges - not the number of ions because some ions have more than one charge - picked up by the resin in one cycle. (dardel.info)
  • In other words, the operating capacity is the actual quantity of ions loaded on the resin between regenerations. (dardel.info)
  • During the exhaustion run, the exchange front would be absolutely flat, meaning that each infinitesimal resin layer would be instantaneously converted from regenerated to exhausted, capturing the incoming ions with an infinite speed of exchange. (dardel.info)
  • However, the exchange reaction is not infinitely fast , as the ions must find their way to available sites inside each resin bead. (dardel.info)
  • The one other option is to use an ion exchange column to sequester sulfate ions, then you acidify the column with another (cheaper) acid and H 2 SO 4 is released. (chemicalforums.com)
  • Splitting water at the surface of the resin beads creates hydrogen and hydroxyl ions, which continuously regenerate the ion-exchange resins. (mpwservices.com)
  • The dilute resin bed gets the highest concentration of divalent ions at the entry point. (mpwservices.com)
  • The existence of side reaction will cause additional crosslinking of cross-linked polystyrene, which will cause the change of the performance of the final product - anion exchange resin . (cnionresin.com)
  • The corresponding polystyrene based resins were specially purified to reduce extractable residues to less than 1 mg/g resin. (carlroth.com)
  • The acrylic matrx guarantees longer operation life than polystyrene based resins. (seplite.com)
  • Isomaltulose-forming microorganisms are immobilized on a carrier that is a weakly basic anion exchange substance in the form of a substantially non-compressible porous particulate solid material, and are used for isomerization of sucrose to isomaltulose. (justia.com)
  • The behaviour shown here is typical of weakly acidic and weakly basic ion exchange resins, that can be fully regenerated with a minimum amount of regenerant, close to the stoichiometric value. (dardel.info)
  • Accelerate your biologic drug development with Praesto ® chromatography resins. (purolite.com)
  • for example, by ion exchange chromatography (IEC). (pharmtech.com)
  • The common gel type anion exchange resin requires 2.5 times the amount of methyl chloride to make it fully swollen and able to be stirred. (cnionresin.com)
  • All anion exchange resins are provided in chloride (Cl - ) form. (carlroth.com)
  • In the kidney, oxalate is secreted in the proximal tubule via 2 separate carriers involving sodium and chloride exchange. (medscape.com)
  • QUESTRAN ® (Cholestyramine for Oral Suspension USP), the chloride salt of a basic anion exchange resin, a cholesterol lowering agent, is intended for oral administration. (rxlist.com)
  • ResinTech ASM-10-HP is a chloride form arsenic selective hybrid anion exchange resin. (resintech.com)
  • Even so, it is not economical to regenerate the resin totally, which would mean a very high regenerant dosage, so in practice the resin bed is only partially regenerated. (dardel.info)
  • Moreover after regenerating H2SO4 with the cheaper acid how should i regenerate the resin? (chemicalforums.com)
  • Ion exchange resins are insoluble in water and general solvents. (sgrhb.com)
  • Cholestyramine resin is quite hydrophilic, but insoluble in water. (rxlist.com)
  • QUESTRAN resin adsorbs and combines with the bile acids in the intestine to form an insoluble complex which is excreted in the feces. (rxlist.com)
  • High-molecular-weight insoluble polymers that contain functional cationic groups capable of undergoing exchange reactions with anions. (bvsalud.org)
  • They can dissociate some cations (e.g. h or na) or anions (e.g. oh-or cl-) in aqueous solution and adsorb other cations or anions that existed in the solution at the same time. (sgrhb.com)
  • Cations and anions in the water exchange with H + and OH - in the resins, producing H 2 O (water). (thoughtco.com)
  • EP-B-0 200 069 discloses the selective immobilization of extracted saccharose mutase enzyme on an anionisable carrier material, especially a sulphonic acid cation-exchange matrix. (justia.com)
  • These resins retain the hazardous substances and thus purify the water, while their performance can be manipulated by various parameters. (cdmsmith.com)
  • The pictures here indicate a resin bed with downflow loading and upflow regeneration. (dardel.info)
  • However, the regeneration of the resin is very different. (mpwservices.com)
  • Anion exchange resins produced in industry are mostly made of styrene divinylbenzene copolymer spheres as the skeleton, and introduced quaternary ammonium groups or other amine groups through chloromethylation and amination. (cnionresin.com)
  • Our anion exchange resins are available as 4 % and 8 % divinylbenzene (DVB) cross-linked polymers but with quaternary amines as active groups. (carlroth.com)
  • The cholestyramine resin in QUESTRAN is not absorbed from the digestive tract. (rxlist.com)
  • Four grams of anhydrous cholestyramine resin is contained in 9 grams of QUESTRAN powder. (rxlist.com)
  • Composite anion-exchange membranes (AEMs) consisting of a porous substrate and a vinyl imidazolium poly(phenylene oxide) (VIMPPO)/acrylamide copolymer layer were fabricated in a straightforward process, for use in redox flow batteries. (mdpi.com)
  • Using raw materials (thermoplastic pellets and rolls of fiber tows), this invention will continuously impregnate fiber tows with molten thermoplastic resin for fabrication of custom composite shapes, unlike current methods, which do not use raw materials and are extremely expensive processes. (rpi.edu)
  • Moreover, unlike other aesthetic adhesive materials, such as composite resins, adhesion to dental structures of GIC is less sensitive to technique and its quality increases with time 10 . (bvsalud.org)
  • Resin beads exchange salts in cation and anion form for hydrogen and hydroxide. (mpwservices.com)
  • Porous-type ion-exchange resins of porous polymer matrix have good resistance against swelling and shrinking, though their exchange capacity is lower than gel-type ion exchange resins of the same degree of cross-linkage. (pyvot.tech)
  • The main role of anion exchange resin in the application of ion-liquid desulfurization technology is to remove the anions in the stable salt structure accumulated in the system, and the anion exchange resin provided by the company has the characteristics of high strength, selectivity, large exchange capacity and stable performance. (scynks.com)
  • The size of resin particles is generally in the range of 0.3-1.2 mm, most of which are in the range of 0.4-0.6 mm. (sgrhb.com)
  • Nucleic acid extraction of the viral particles is then performed directly from the anion exchange resin, with the resulting sample suitable for molecular analyses. (cdc.gov)
  • Disadvantages include the inability of this protocol to assess infectivity of resin-adsorbed viral particles, and potentially the need for the optimization of the liquid sampling buffer used within the impinger. (cdc.gov)
  • for example, by creating a fouling layer on membranes, coating ion exchange resins. (pharmtech.com)
  • Anion exchange resins can be divided into cationic resins, anionic resins, double-bed resins, polishing core-grade resins and so on. (sgrhb.com)
  • If you don't mind can you suggest me which anion exchange resin would be best suitable for the job. (chemicalforums.com)
  • Anion exchange resin_Sichuang YiNeng KS Environmental Protection Technology co. (scynks.com)
  • 2, the exchange capacity is large. (scynks.com)
  • The total capacity of a resin sample is the number of ion exchange sites. (dardel.info)
  • Also called useful capacity , it is the number of ion exchange sites where exchange has really taken place during the loading run. (dardel.info)
  • The ion exchange capacity is expressed as eq/L (equivalents per litre of resin). (dardel.info)
  • In such a case, the operating capacity would be equal to the total capacity of the resin. (dardel.info)
  • At this stage, the ion exchange resin is not fully exhausted, so the operating capacity is smaller than the total capacity. (dardel.info)
  • The operating capacity is, as defined above, the difference between the exhausted resin at the start and at the end of the run. (dardel.info)
  • For weak acid cation resin, operating capacity depends on several parameters, so there is no such simple estimate. (dardel.info)
  • However, WAC resins having a high total capacity and being regenerated almost stoichiometrically, i.e. without an excess ( see regenerant ratio ), their use is very helpful for waters containing a high concentration of alkalinity and hardness. (dardel.info)
  • Typically the operating capacity of SAC and SBA resins is 40 to 60 % of their total capacity. (dardel.info)
  • TOYOPEARL GigaCap Q-650S high capacity, high resolution anion-exchange resin for process scale applications was recently introduced by Tosoh Corporation. (bioprocessintl.com)
  • ASM-10-HP has hydrated iron oxide monoatomically dispersed throughout the polymer giving the product hybrid properties and exceptional capacity for certain anions. (resintech.com)
  • In this system, anion exchange resin is coupled with liquid impingement-based air sampling devices for efficacious concentration of negatively-charged viruses from bioaerosols. (cdc.gov)
  • Thus, the resin serves as an additional concentration step in the bioaerosol sampling workflow. (cdc.gov)
  • Recombinant secreted embryonic alkaline phosphatase (SEAP) expression was induced by medium exchange and temperature shift. (bioprocessintl.com)
  • Lim, TK, Nakamura, N & Matsunaga, T 2000, ' Use of anion exchange resin-packed capillary column for rapid detection of anti-double-stranded DNA antibody in systemic lupus erythematosus serum ', Biotechnology and Bioengineering , vol. 68, no. 5, pp. 571-575. (elsevier.com)
  • This resin, with dynamic binding capacities (DBCs) approaching 190 g/L for bovine serum albumin (BSA), is the newest member of the TOYOPEARL® product line. (bioprocessintl.com)
  • Calculation of the serum anion gap may also help to differentiate between primary metabolic alkalosis and metabolic compensation for respiratory acidosis. (medscape.com)
  • QIAGEN Plasmid Kits provide gravity-flow, anion-exchange tips for purification of transfection-grade plasmid DNA. (qiagen.com)
  • The QIAGEN Plasmid Kits uses gravity-flow QIAGEN anion-exchange tips for efficient purification of plasmid DNA. (qiagen.com)
  • The unique anion-exchange resin in QIAGEN-tips is developed exclusively for the purification of nucleic acids. (qiagen.com)
  • Ion exchange resins contain one or several chemically active groups, which are exchange functional groups. (sgrhb.com)
  • Our innovations in ion exchange (IX) water treatment and separation have driven key improvements in reliability, productivity, efficiency, and safety. (dupont.com)
  • Within the Amber series, we offer ion exchange resins that help meet a range of water-treatment and separation needs for industries and markets, resulting in critical improvements in reliability, productivity, quality, efficiency, and safety. (dupont.com)
  • DuPont Water Solutions has been a partner to the water-treatment industry and plant owners for decades, with a history of application development, technical service, and product innovations in ion exchange technologies that contribute to measurable improvements in reliability, productivity, efficiency, and safety. (dupont.com)
  • Also i have read that the efficiency of the resin decreases over time. (chemicalforums.com)
  • Envirogen offers Ion Exchange treatment paired with our high-efficiency system design to maximize the use of the exchange resin and lower costs. (envirogen.com)
  • For lower influent concentrations of perchlorate, our high-efficiency ion exchange systems offer high levels of perchlorate removal and sound economics. (envirogen.com)
  • Envirogen can back our high efficiency ion exchange installations with pay-for-performance guarantees over the lifetime of the installation, offering a low lifecycle cost. (envirogen.com)
  • The main function of anion exchange resins is to reduce hardness. (sgrhb.com)
  • As a result, this eliminates the need for chemicals to regenerate the resins. (mpwservices.com)
  • Binderless zeolite macrostructures in the form of ZK-4 microspheres were prepared using anion exchange resin beads as shape directing macrotemplates. (preprints.org)
  • A broad and deep portfolio of ion exchange water treatment and separation products for optimal plant productivity in multiple industries and markets. (dupont.com)
  • Backed by extensive performance testing and world-class application experience, the Amber series ion exchange resin portfolio for industrial water will help you maximize the performance of our products in your hands and provide the quality and reliability you need on a daily basis. (dupont.com)
  • Whatever the complexity of your manufacturing processes, our industry-leading ion exchange products can help beverages and foods look and taste better, products achieve greater consistency, and plants run more productively. (dupont.com)
  • Our ion exchange products can play a critical role in meeting consumers' demands for quality, value, and consistency of beverages, including their clarity, taste, and nutritional value. (dupont.com)
  • Perchlorate is a highly soluble salt anion that is used in the manufacture of solid rocket fuel, fireworks, road flares, explosives and other products. (envirogen.com)
  • This method uses synthetic resins, produced from polymeres with charged groups. (cdmsmith.com)
  • Fully crystalline spheres similar in size and shape to the original resin beads were obtained by a hydrothermal treatment at the highest temperatures (150 - 180 °C) for a short treatment time of 24 h. (preprints.org)
  • EDI regenerates the resin beads continuously using electricity. (mpwservices.com)
  • Additionally, because the resin beads don't require backwashing or fluidized beds, they do not need to be installed in the large pressurized tanks. (mpwservices.com)
  • The Amber series of resins are available in a wide range of chemical compositions and polymer structures. (dupont.com)
  • California regulators - who have the greatest experience with this contaminant - have identified two Best Available Control Technologies for perchlorate water treatment: ion exchange and biological treatment, specifically the fluidized bed bioreactor. (envirogen.com)
  • Ion exchange resin is usually installed in double bed or reverse osmosis to produce high-purity water. (sgrhb.com)
  • Deionized water is made by running tap water, spring water, or distilled water through an electrically charged resin. (thoughtco.com)
  • for example, ion exchange-based water softening, which has been in use for almost 100 years. (pharmtech.com)
  • Ion exchange is an alternative and proven treatment method for perchlorate contamination in drinking water. (envirogen.com)
  • Ion exchange column would be too expensive for a commercial process. (chemicalforums.com)
  • Well I work in a commercial process, and we use acid recovery via ion exchange resin on the hundreds of kg scale per exchange column. (chemicalforums.com)
  • Furthermore, this eliminates the batch process that requires traditional ion exchange to be off-line from time to time while being regenerated, often at off-site locations. (mpwservices.com)
  • DuPont™ AmberLite™ HPR weak and strong acid cation and weak and strong base anion exchange resins. (dupont.com)
  • The invention also relates to a carrier material comprising an anion exchange material and having immobilized thereon viable isomaltulose-forming micro-organism cells. (justia.com)
  • Regenerate the ion exchange column b. (cdc.gov)
  • At some point, the flat front would reach the bottom of the column, and the resin would then be totally exhausted. (dardel.info)
  • Usually, a mixed ion exchange bed with both positive and negative charged resins is used. (thoughtco.com)
  • Ion exchange resins were investigated for the effective recovery of platinum, palladium, and gold from a pregnant cyanide heap leach solution. (edu.au)
  • Detection of viruses from bioaerosols using anion exchange resin. (cdc.gov)
  • Bengbu Sanyi Resin Technology Co., Ltd. (cnionresin.com)
  • Ion exchange is an ideal technology for addressing perchlorate in low influent concentrations where minimal variations in influent composition are expected and where additional anions are also at low concentrations. (envirogen.com)
  • The main properties and types of resins are determined by the types of chemical active groups in resins. (sgrhb.com)