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Showing 1 to 14 of 14 for “"turbidimetry"”.
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EVALUATING THE USE OF TURBIDIMETRY FOR STUDYING FIBRIN STRUCTURAL PROPERTIES
… the diameter and mass-length ratio of fibers is turbidimetry, which uses light scattering theory for randomly oriented, thin, cylindrical rods to estimate fibrin fiber structural properties from scattering data. There are several different approaches that use turbidimetry to solve for these …
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Structural Studies of Scallop Abductin, a Compressible Elastomer that Translates Hydrophobic Interactions to Elasticity
… of this phenomenon via temperature-dependent turbidimetry revealed that this peptide self-assembles or aggregates at 23 °C. Secondary structural studies of this peptide at different temperatures revealed that it undergoes an inverse temperature transition much like soluble elastin peptides. …
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Synthesis and characterization of thermo-responsive polyethers
… of copolymers was characterized by NMR, turbidimetry and micro-calorimetry respectively to study the phase transition behavior. Tetraoctylammonium bromide was used as initiator resulting with a bromide as the end group. Bromide was substituted by azide group to be used in click chemistry …
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Protein stability: Impact of formulation excipients and manufacturing processes in protein-based pharmaceuticals
… light scattering (DLS). Thioflavin T assay and turbidimetry analysis were used as complementary studies. In protein-based freeze dried formulations, at accelerated storage conditions, the presence of aggregates were studied in samples containing arginine or lysine using ThT assay and …
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Development of functional hydrogels for sensor applications
… Influenza viruses were detected in solution by turbidimetry in solution as well as by a copolymerized solvatochromic dye to track binding via the changes of the polymers’ fluorescence by said binding event. This effect could also be achieved by utilizing the thermoresponsive behavior. Another …
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Amphiphilic BAB-triblock copolymers bearing fluorocarbon groups : synthesis and self-organization in aqueous media
… highly concentrated aqueous solutions using DLS, turbidimetry, 1H- and 19F-NMR, rheology, determination of the CMC, foam height- and surface tension measurements and microscopy. Furthermore, their ability to stabilize emulsions and microemulsions and the wetting behaviour of their aqueous …
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Optical methods for monitoring biological parameters of phototropic microorganisms during cultivation
… a photobioreactor is quantified with the help of turbidimetry measurements, which require extensive calibration. Another problem frequently encountered when using spectral analysis for investigating solutions is that samples of interest are often undiluted and highly scattering and do not adhere …
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Effects Of Nutrient Overload And Environmental Conditions On Algal Bloom Formation: A Case Study Of Water Sources In Eastern Kentucky
… (spectrophotometry, EPA method 365.3), and turbidimetry (EPA method 180). Commercially available semi-quantitative kits from LaMotte and HACH were utilized as secondary measures of phosphates, nitrates, nitrites, and sulfates. Environmental conditions such as rainfall, water pH, dissolved …
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Synthesis and self-assembly of multiple thermoresponsive amphiphilic block copolymers
… solution was investigated by a combination of turbidimetry, dynamic light scattering, TEM measurements, NMR as well as fluorescence spectroscopy. The successive conversion of such block copolymers from a hydrophilic into a hydrophobic state includes intermediate amphiphilic states with a …
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The multifarious self-assembly of triblock copolymers : from multi-responsive polymers and multi-compartment micelles
… The stepwise self-assembly was followed by turbidimetry, dynamic light scattering (DLS) and 1H NMR spectroscopy as these methods reflect the behavior on the macroscopic, mesoscopic and molecular scale. Although the first phase transition could be easily monitored due to the onset of …
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Design, Synthesis and Characterisation of Amphiphilic Symmetrical triblock copolymers by the RAFT process : their self-organisation in dilute and concentrated aqueous solutions
… in water with A made of PNIPAM was examined by turbidimetry and dynamic light scattering (DLS). The cloud point of the copolymers was nearly identical to the cloud point of the homopolymer and varied between 28-32 °C with concentrations from 0.01 to 50 wt%. This is attributed to the formation of …
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Smart Hydrogels based on Responsive Star-Block Copolymers
… independently of each other as confirmed by turbidimetry and dynamic light scattering. They form hydrogels at relatively low concentrations upon heating above the transition temperature of PDEGMA independent of the pH value. The fraction of DEGMA is an important parameter for the gelation …
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Kritické zhodnocení vybraných metod stanovení síranů ve vodách
Obsahem této práce bylo zhodnocení a optimalizace metod pro stanovení síranů ve vodném prostředí s aplikací na různé typy vod. Ke stanovování síranů byly využity dva rozdílné postupy, turbidimetrický a volumetrický. U turbidimetrického stanovení byly optimalizovány podmínky pro stanovení síranů v …
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Linear and Cross-linked UCST-Type Polymers : Synthesis and Properties
… on the cloud point was analyzed by means of turbidimetry measurements. In Publication 3, the previously synthesized trithiocarbonate end-functionalized PNAGA, synthesized via RAFT polymerization (shown in Publication 1), was grafted onto gold nanoparticles (AuNPs) by ligand exchange in …