Sentences with phrase «on liquid chromatography»

Performed all preventative maintenance and troubleshooting repairs on Liquid Chromatography and Mass Spectrometers (LC / MS).

Support offered under this TNA: Comprehensive targeted metabolomics profiling based on liquid chromatography — mass spectrometry.

Not exact matches

Editor's Note: Brian Ruddell, a New Zealander studying in Australia, was kind enough to write us about High Performance Liquid Chromatography tests that he performed on a number of chiles that he grew in his garden, as well as a famous hot sauce.

by Brian Ruddell Editor's Note: Brian Ruddell, a New Zealander studying in Australia, was kind enough to write us about High Performance Liquid Chromatography tests that he performed on a number of chiles that he grew in his garden, as well as a famous hot sauce.

Our researchers may offer a broad range of laboratory work or focus on specific technical tasks, such as high - performance liquid chromatography or statistical analysis.

King's group was the first to put funnel - web venom through a separation method called high - performance liquid chromatography (HPLC), which can separate out different components in a mixture based on properties like size or charge.

The process involving liquid chromatography - electrospray ionization - tandem mass spectrometry relies on a vital step called «charge derivatization» or using a permanently charged reagent to selectively trap the estrogens and isolate them from the lipids and proteins that could interfere with estrogen detection, Schug said.

The team used a nanoflow liquid chromatography instrument to sort the molecules in the meteorite sample, then applied nanoelectrospray ionization to give the molecules an electric charge and deliver them to a high - resolution mass spectrometer instrument, which identified the molecules based on their mass.

This technique performs mass spectrometry on a whole extract, rather than separating it first by liquid chromatography.

These include: acid hydrolysis and monosaccharide composition using gas - liquid chromatography [3], microscopic observation of xylem stem sections [4, 5], seedling growth on medium containing cell wall hydrolyzing enzymes [6] and Fourier - Transform Infrared (FT - IR) microspectroscopy [7, 8].

Liquid chromatography on - line tandem mass spectrometry (LC / MS / MS) is the method of choice for small molecule quantitation because it provides accurate, reliable and consistent data and requires fewer specimens.

Reversed - phase high - performance liquid chromatography (HPLC) with electrochemical detection was used to analyse ascorbic acid, based on the method of Iriyama et al. with modifications [29], [30].

In MudPIT, a complex mixture of proteins and peptides are separated using 2 - D liquid chromatography, and then the separate proteins are digested (chopped into smaller «peptide» pieces with enzymes) and subjected to the sensitive technique of mass spectrometry (which identifies the components based on their masses).

Pooled fecal samples collected within the last week of each dietary period were prepared for analysis of neutral and acidic fecal sterols as described previously.20 Gas — liquid chromatography of neutral and acidic fecal sterols was performed on a gas chromatograph (model HP5890, Hewlett — Packard, Palo Alto, Calif.) equipped with an automatic sample injector.

Professional Duties & Responsibilities Biomedical and biotechnology engineer with background in design of biomaterials, biosensors, drug delivery devices, microfrabrication, and tissue engineering Working knowledge of direct cell writing and rapid prototyping Experience fabricating nanocomposite hydrogel scaffolds Proficient in material analysis, mechanical, biochemical, and morphological testing of synthetic and biological materials Extensive experience in bio-imaging processes and procedures Specialized in mammalian, microbial, and viral cell culture Working knowledge of lab techniques and instruments including electrophoresis, chromatography, microscopy, spectroscopy, PCR, Flow cytometery, protein assay, DNA isolation techniques, polymer synthesis and characterization, and synthetic fiber production Developed strong knowledge of FDA, GLP, GMP, GCP, and GDP regulatory requirements Created biocompatible photocurable hydrogels for cell immobilization Formulated cell friendly prepolymer formulation Performed surface modification of nano - particle fillers to enhance their biocompatibility Evaluated cell and biomaterial interaction, cell growth, and proliferation Designed bench - top experiments and protocols to simulate in vivo situations Designed hydrogel based microfluidic prototypes for cell entrapment and cell culture utilizing computer - aided robotic dispenser Determined various mechanical, morphological, and transport properties of photocured hydrogels using Instron, FTIR, EDX, X-ray diffraction, DSC, TGA, and DMA Assessed biocompatibility of hydrogels and physiology of entrapped cells Evaluated intracellular and extracellular reactions of entrapped cells on spatial and temporal scales using optical, confocal, fluorescence, atomic force, and scanning electron microscopies Designed various biochemical assays Developed thermosensitive PET membranes for transdermal drug delivery application using Gamma radiation induced graft co-polymerization of N - isopropyl acylamide and Acrylic acid Characterized grafted co-polymer using various polymer characterization techniques Manipulated lower critical solution temperature of grafted thermosensitive co-polymer Loaded antibiotic on grafted co-polymer and determined drug release profile with temperature Determined biomechanical and biochemical properties of biological gels isolated from marine organisms Analyzed morphological and mechanical properties of metal coated yarns using SEM and Instron Performed analytical work on pharmaceutical formulations using gas and high performance liquid chromatography Performed market research and analysis for medical textile company Developed and implement comprehensive marketing and sales campaign

On the day that families completed questionnaires in the clinic, each patient provided blood for A1c, measured by high - performance liquid chromatography (reference range 4.0 — 6.0 %; Tosoh 2.2; Tosoh Bioscience, South San Francisco, CA).