Flow analysis and chromatography. Medical search. Frequent questions

1985) and in rat urine by high-performance liquid chromatography (HPLC) with ultraviolet (UV) absorbance detection following formation of the 2,4-dinitrophenylhydrazone derivative (Shara et al. (cdc.gov)
High performance liquid chromatography (HPLC) work in the food industry forms an integral part of analytics, occupying approximately one-fifth of the daily users (1,2), and its well-earned role should receive more attention. (chromatographyonline.com)
In addition, chromatography using ProSwift SCX-1S columns can be performed on standard HPLC systems with only minor plumbing changes to minimize instrument delay volumes. (chromatographyonline.com)
The data highlights improved stability but also suggests that an exothermic process does occur with an onset temperature of 118 °C. Finally, an 18-hour continuous operation of the reaction procedure using high-performance liquid chromatography (HPLC) pumps is reported. (whiterose.ac.uk)

The team measured concentrations of 108 metabolites using liquid chromatography and flow injection analysis with tandem mass spectrometry. (umn.edu)
Her postdoctoral work was focused on a category of lipids, termed sphingolipids, using tandem mass spectrometry in combination with liquid chromatography for "lipidomic" analysis. (umc.edu)
We investigated the suitability of isotope-dilution liquid chromatography coupled with tandem mass spectrometry for identifying vitamin E acetate (VEA) in bronchoalveolar lavage (BAL) fluid. (cdc.gov)

Recent developments and applications of selected ion flow tube mass spectrometry (SIFT-MS). (nih.gov)
Selected Ion Flow Tube-Mass Spectrometry (SIFT-MS) as an Alternative to Gas Chromatography/Mass Spectrometry (GC/MS) for the Analysis of Cyclohexanone and Cyclohexanol in Plasma. (nih.gov)

Chapters 3-8 cover the complementary methods, based on the combination of mass spectroscopy with various chromatographic techniques such as high-performance liquid chromatography, gas chromatography and supercritical fluid chromatography. (chemtec.org)
The use of continuous flow methods in this technology for extraction, chromatography, and reactions with supercritical fluids provides several advantages over the batch process. (grandviewresearch.com)
When conducting analysis with the Nexera UC supercritical fluid chromatography system, because diffusion of the sample band in the mobile phase is high compared with liquid chromatography, separation behavior changes significantly depending on the types of columns used. (shimadzu.com)
The high separation power and short analysis time obtained demonstrate for the first time that supercritical fluid chromatography is a fast and reliable technique for the analysis of lignin-derived phenols in complex environmental samples. (lu.se)
Alkaline cupric oxide (CuO) oxidation is one of the mostly performance supercritical fluid chromatography (UHPSFC) adopted methods for analyzing lignin in various complex using columns with sub-2 m packing can further improve environmental matrices such as soils and sediments [9]. (lu.se)
UHPSFC , ultra- pacted by other parameters, such as the addition of the mod- high performance supercritical fluid chromatography ifier and the change of the mobile phase density [20]. (lu.se)

Often used in size exclusion chromatography for polymer analysis. (wikipedia.org)

Flow Injection Analysis is a simple and versatile analytical technology for automating wet chemical analysis, based on the physical and chemical manipulation of a dispersed sample zone formed from the injection of the sample into a flowing carrier stream and detection downstream. (vici.com)
OI Analytical has been an innovator in instrumentation for Total Organic Carbon analysis (TOC) since 1972. (xylem.com)
OI Analytical designs and manufactures instrumentation for chemical analysis. (xylem.com)
Life science and analytical instruments are also used in the identification of safety of food sample as well as in the analysis of DNA for the discovery of new drugs. (medgadget.com)
However, food analysis is still a major focus for chromatographers from a scientific and an analytical point of view. (chromatographyonline.com)
Food analysis encompasses a broad spectrum of analytical challenges, including determining heterogeneous bioactive compounds, residues, pesticides, toxins, and allergens in various and often very complex matrices. (chromatographyonline.com)
We demonstrate that when combined with fast micro- or analytical flow-rate chromatography, Zeno SWATH MS increases protein identification with low sample amounts. (elifesciences.org)
Using 5 min analytical flow-rate chromatography (800 µl/min), Zeno SWATH MS identified 4907 proteins from a triplicate injection of 2 µg of a human cell lysate, or more than 3000 proteins from a 250 ng tryptic digest. (elifesciences.org)

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. (bdbiosciences.com)
BRCA1 and BRCA2 proteins were quantified by perfusion affinity chromatography. (nih.gov)

The aim of the course is to enable students to acquire in depth theoretical and practical knowledge of common modern separation techniques, such as chromatography, mass spectrometry and capillary electrophoresis. (lu.se)
Overview of capillary electrophoresis and field flow fractionation. (lu.se)

In liquid chromatography: Charged aerosol detector (CAD) Evaporative light scattering detector (ELSD) In gas chromatography: Flame ionization detector (FID) Flame photometric detector (FPD) Nitrogen Phosphorus Detector (NPD) Atomic-emission detector (AED) In all types of chromatography: Mass spectrometer (MS) In liquid chromatography: UV detectors, fixed or variable wavelength, which includes diode array detector (DAD or PDA). (wikipedia.org)
Formaldehyde has been measured in blood by gas chromatography (GC) in conjunction with mass spectrometry (MS) after derivatization of the formaldehyde to the pentafluorophenylhydrazone (Heck et al. (cdc.gov)
The combination of chromatography with mass spectroscopy is a very useful technique which is being increasingly used by polymer chemists to improve existing polymers and to discover new ones with specific physical properties such as thermal stability and retention of properties over a long service life. (chemtec.org)
This technique is extremely powerful for the analysis and characterisation of polymers and is often based on the use of controlled chromatography - mass spectroscopy to measure a polymer's decomposition with techniques such as pyrolysis, followed by chromatography to separate any breakdown product, and, finally, mass spectroscopy, to achieve an unequivocal identification of the pyrolysis products obtained. (chemtec.org)
Pyrolysis chromatography-mass spectroscopy is a method of studying the structure of polymers which involves subjecting the polymer pyrolysis products to a chromatographic technique to simplify subsequent analysis and, finally mass spectroscopy to identify the pyrolysis products with the possibility of deducing finer details of polymer structure than were previously attainable by classical methods (Chapters 9-11). (chemtec.org)
Flow injection analysis (FIA)-mass spectrometry (MS) is a valuable platform for untargeted metabolomics, however this technique requires high-resolution MS to resolve complex samples without front-end separation. (bruker.com)
Flow and mass transport processes through porous materials are ubiquitous in nature and industry. (uni-marburg.de)
Using this framework, we simulated the flow and mass transport (advection-diffusion problem) in several types of ordered and disordered porous materials. (uni-marburg.de)
Mass spectrometry-based proteomic and lipidomic analysis of CA1 hippocampus samples from 74 neurologically normal human donors, aged 66-104, was used in combination with multiple regression models and gene set enrichment analysis to identify age-dependent changes in the proteome and lipidome. (biomedcentral.com)
ESRF-ESF is an inline gas flow sensor, based on the hot-film anemometer principle for mass gas flow measurements. (a2zinc.net)
ES Systems has developed ESRF-ESF, an inline gas flow sensor , based on the hot-film anemometer principle for mass gas flow measurements. (a2zinc.net)
ES Systems has developed ESRF-HF, a family of insertion gas flow transmitters, based on the hot-film anemometer principle for mass gas flow measurements. (a2zinc.net)
The six amines were dosed in four vehicles (water and three generic water-based MWF formulations) and analyzed using a scintillation counter or gas chromatography/mass spectrometry. (cdc.gov)
Instrumentation and experimental techniques for high-resolution chromatography as well as linking of chromatography to mass spectrometry and its applications in e.g. food, drug and environmental analysis. (lu.se)
Mass spectrometric detection for quantitative and qualitative analysis connected to both gas and liquid chromatography. (lu.se)

A chromatography detector is a device used in gas chromatography (GC) or liquid chromatography (LC) to detect components of the mixture being eluted off the chromatography column. (wikipedia.org)
High Performance Liquid Chromatography: Fundamental Principles and Practice. (wikipedia.org)
Liquid Chromatography Detectors. (wikipedia.org)
The Cheminert low pressure fittings are ideally suited for flow injection analysis, low pressure liquid chromatography, and stream sampling devices. (vici.com)
The purity of ACT‑3 was determined using high‑performance liquid chromatography. (iasp-pain.org)
This work describes the use of Sequential Injection Liquid Chromatography (SIC) coupled to a long path length optical flow cell with 100 cm long Liquid Core Waveguide (LCW) to improve the limits of detection (LOD) and quantification (LOQ) for determination of atrazine (ATR), propazine (PRO) and simazine (SIM). (usp.br)
To demonstrate the advantages and simplicity of model-assisted ultrahigh-pressure liquid chromatography (UHPLC) method development, the following brief study will demonstrate a real-life example for soy isoflavons. (chromatographyonline.com)
Such mixed solutions are also useful in separation science, as extraction solvents and in liquid chromatography. (scirp.org)
The specific microfluidic flow, TRDF, was applied to capillary liquid chromatography [8] and micro-extraction [9]. (scirp.org)
The first part of this work (Chapter 1) is addressing a timely question of high-performance liquid chromatography on whether particle size distribution of the modern packing materials gives any advantage in terms of separation efficiency. (uni-marburg.de)

Analysis time can be reduced at a high flow rate without impairing the separation performance. (shimadzu.com)
Rational Design and Numerical Analysis of a Hybrid Floating cIDE Separator for Continuous Dielectrophoretic Separation of Microparticles at High Throughput. (uni-bremen.de)
Separation of a standard protein mixture at increasing flow rates and constant column volume gradient is shown in Figure 1(a). (chromatographyonline.com)

Sandahl, Margareta LU and Turner, Charlotta LU ( 2023 ) In Journal of chromatography. (lu.se)

Improve workflow with OI Analytical's flow chemistry analyzers, providing the capability to run multiple flow methods simultaneously. (xylem.com)
The global flow chemistry market was valued at USD 1.60 billion in 2022 and is expected to grow at a compound annual growth rate (CAGR) of 11.2% over the forecast period. (grandviewresearch.com)
The U.S. Food and Drug Administration (FDA) is advocating the use of flow chemistry for Active Pharmaceutical Ingredients (APIs) production. (grandviewresearch.com)
The market's competitive landscape is driven by technological innovation for the use of flow chemistry. (grandviewresearch.com)
The chemicals segment led the market and accounted for over 37.8% of the global revenue in 2022 on account of increased use of environmentally friendly technologies such as flow chemistry in order to reduce greenhouse emissions. (grandviewresearch.com)
The program focuses on six applicable core research areas: Chemometrics and Process Control Algorithms, Spectroscopy/Imaging, Chromatography, Continuous Flow Chemistry and Analysis & Process Control. (iths.org)
Journal of Flow Chemistry, 6 (3). (whiterose.ac.uk)

Antibodies of the clones 4-13, 4-58, 1-19 and 6-39 have been purified by protein G-sepharoses chromatography and, except mAb 4-58, biotinylated. (uni-muenchen.de)

Shim-pack UC series was designed with a variety of stationary phases, making it suitable for analysis of various compounds. (shimadzu.com)

In the present study, the effects of ACT‑3 on anticancer effects of MCF‑7 cells were determined by measuring the level of apoptotic cell death and cell cycle regulator using flow cytometry analysis and western blot analysis, respectively. (iasp-pain.org)
Flow cytometry analysis showed a G(1)/S phase cell cycle-arrest after treatment of the cells with 10 microM lycopene for 48 h. mRNA expression was studied by quantitative reverse transcription-polymerase chain reaction using the Taqman method. (nih.gov)

The Quantitative Distribution Analysis in ASTRA 8.2 provides histograms of particle number vs. radius, similar to those generated by particle counting methods. (wyatt.com)

The course covers the basics, principles and limitations for the most common methods for multivariate statistics (analysis of variance, principal component analysis and partial least squares regression), experimental design (super-saturated and factorial designs) and method validation with a focus on practical use. (lu.se)

Rather, the intention is to identify well-established methods that are used as the standard methods of analysis. (cdc.gov)
Methods: This is an analysis of two cross-sectional surveys that were conducted as part of a program evaluation of an infant and young child feeding and micronutrient powder intervention that included anemia as a primary outcome. (cdc.gov)
Methods reported for the analysis of 11 major lignin- mic substances. (lu.se)

The determination of fluoroquinolone antibiotics in complex matrices, such as food, often requires reasonable sample extraction and preparation process prior to instrumental analysis. (hindawi.com)

The simulated flow velocity field and dynamics of the random-walk tracer ensemble were used to study the transient and asymptotic behavior of macroscopic transport parameters: permeability, effective diffusion, and hydrodynamic dispersion coefficients. (uni-marburg.de)

Total Organic Carbon (TOC) is an important water quality parameter, and OI Analytical's reliable TOC instrumentation process naturally-occurring and synthetic compounds for analysis of TOC, TIC, and NPOC content. (xylem.com)

After analysis of deduced amino acid sequences from cloned cDNAs of dipeptidyl peptidase IV (DPP IV) and aminopeptidase A (APA), it was noticed that DPP IV and APA are type II membrane proteins that have one transmembrane domain near the N-terminus. (nature.com)
For instance, using 20 min micro-flow-rate chromatography, Zeno SWATH MS identified more than 5000 proteins consistently, and with a coefficient of variation of 6%, from a 62.5 ng load of human cell line tryptic digest. (elifesciences.org)

Ultrasonic flow measurement has set a new standard for reliability, durability, and measurement accuracy in both the natural gas and process gas industries over the past two decades. (sick.com)
As USMs can satisfy all the requirements very well, they are ideal for custody transfer flow measurement in future transport and distribution networks, whether for hydrogen admixtures or pure hydrogen. (sick.com)

Although no literature citations were found, it would seem that formate in urine and blood could be determined by a method based on ion chromatography (IC). (cdc.gov)
A simple flow injection chemiluminescence (FL-CL) method with MSPD technique for determination of ENRO in eggs was described. (hindawi.com)
Method development of a segmented flow system f. (envirotech-online.com)
ASTRA's LNP-NA Analysis method quantifies the DNA or RNA payload of lipid nanoparticles according to size. (wyatt.com)
Method is fast, robust, reproducible, and can be used for analysis of ranitidine in various samples. (helixchrom.com)
Multivariate experimental design and different statistical analysis tools (variance analysis, principal component analysis and least squares method). (lu.se)
The new ultra-high performance super- critical fluid chromatography method was also applied for the qualitative and quantitative analysis of lignin-derived phenolic compounds obtained upon alkaline cupric oxide oxida- tion of a commercial humic acid. (lu.se)

It should include a filter or a combination organic vapor, acid gas, and particulate cartridge/filter combination or a continuous flow respirator for air levels greater than AEGL-1. (cdc.gov)
Anticancer effects of the HDAC inhibitor, 3β,6β‑dihydroxyurs‑12‑en‑27‑oic acid, in MCF‑7 breast cancer cells via the inhibition of Akt/mTOR pathways. (iasp-pain.org)
The anticancer activity of 3β,6β‑dihydroxyurs‑12‑en‑27‑oic acid (ACT‑3), a major component isolated from , has not yet been investigated in detail. (iasp-pain.org)
N-terminal amino acid sequence analysis of the purified DPP IV revealed that the N-terminus is not processed. (nature.com)

1987-05 Freddy Ståhlberg, PhD: NMR Flow Imaging- A study of flow perpendicular to the imaging plane using o.o8-1.5 T NMR imaging units. (lu.se)

Operation at reduced flow rates minimizes consumption of sample and eluents, greatly reducing the cost of analysis. (chromatographyonline.com)

Food analysis is often handled less thoroughly than pharmaceutical analysis because of the smaller life-threatening risk expected from foodstuffs. (chromatographyonline.com)
Due to the compact design, and versatility, ESRF-ESF gas flow sensors are ideal for medical, process & pharmaceutical equipment where high accuracy and reliability are of the essence. (a2zinc.net)

Flow analysis automates both simple and complex, multi-step analysis procedures requiring in-line sample preparation. (xylem.com)
In Proteomics Sample Preparation a summary of the pros and cons is given, as well as step-by-step protocols adaptable to any specific proteome analysis task. (chipsbooks.com)
At the UMMC Cancer Institute, she has been responsible for the overall management of the Flow Cytometry Core, sample analysis and cell sorting for several immunology, biochemistry and cancer biology groups. (umc.edu)
FIA-MRMS requires only five minutes of analysis time per sample and detects thousands of metabolite features with exceptional reproducibility. (bruker.com)
Two aspects of HHANES, especially, should be taken into account when conducting any analyses: the sample weights and the complex survey design. (cdc.gov)

The M Series syringe-free pump is a syringe-free pump capable of delivering a bidirectional flow to six orders of magnitude. (vici.com)

To determine the absorption of six amines used as corrosion inhibitors and biocides in MWFs, porcine skin flow-through diffusion cell experiments were conducted with hydrophilic ethanolamines (mono-, di- and triethanolamine, MEA, DEA and TEA respectively) and a mixture of lipophilic amines (dibutylethanolamine, dicyclohexylamine and diphenylamine). (cdc.gov)

Laboratory sessions (7.5 credits): Experimental techniques for high-resolution chromatography. (lu.se)

Mothers completed a questionnaire about smoking habits of household members, and urine samples were obtained from infants for analysis of cotinine levels. (who.int)

Simultaneous analysis of multiple pesticides with a wide polarity range from hydrophobic to hydrophilic ones. (shimadzu.com)

Flow cytometer analyses demonstrated an increased frequency following the stimulation with Concanavalin A. The frequency of mAb 4-13- and mAb 4-58-positive cells matched the total frequency of CD4- and CD8-positive cells. (uni-muenchen.de)
Examine the range and frequency of values of a variable before conducting an analysis of data. (cdc.gov)
The frequency counts may be useful to determine which analyses may be worthwhile. (cdc.gov)

Flow cytometric analysis was performed using a BD™ LSR II Flow Cytometer System. (bdbiosciences.com)
Chromatography was controlled by the Chromeleon Chromatography Data System. (chromatographyonline.com)

Herein, we report a continuous-flow process for the preparation of triazenes, whereby diazonium salts are generated and converted into their masked or protected triazene derivatives. (whiterose.ac.uk)

The results of surveys, analyses, and studies are made known primarily through publications and the release of data on the internet. (cdc.gov)

Journal of chromatography. (cdc.gov)

Gas network operators and gas suppliers are therefore wondering how this will affect the performance of their gas flow meters. (sick.com)

This is because the added hydrogen affects the properties of the natural gas: the density, viscosity, explosivity, flow rate, and sound velocities of the gas change. (sick.com)

Moreover, the use of green solvents such as methanol and acetone can be safely carried out in a flow reactor under high pressure and elevated temperatures. (grandviewresearch.com)

The use of Gel Chromatography Column Scanning in research and routine clinical work. (lu.se)

Analysis of VOCs in drinking water, sulfur and fluorinated contaminants in petrochemicals, and pesticide residues on food products. (xylem.com)

Gas chromatography with capillary columns and different injection techniques. (lu.se)

Anatomy1

Organisms3

Chemicals and Drugs7

Analytical, Diagnostic and Therapeutic Techniques and Equipment32

Psychiatry and Psychology1

Phenomena and Processes17

Disciplines and Occupations2

Information Science3

Health Care3

HPLC4

Tandem mass spectro3

Selected ion flow tub2

Supercritical6

Size exclusion chro1

Analytical8

Affinity chromatography2

Capillary electrophoresis2

Mass15

Liquid10

Separation3

20231

Chemistry7

Protein1

Stationary phases1

Cytometry analysis2

Particle1

Multivariate statistics1

Methods3

Extraction1

Behavior1

Instrumentation1

Proteins2

Measurement2

Method7

Acid4

Imaging1

Eluents1

Pharmaceutical2

Sample5

Bidirectional1

Experiments1

High-resolution1

Urine1

Pesticides1

Frequency3

System2

Continuous1

Studies1

Journal1

Performance1

Density1

Safely1

Work1

Products1

Columns1