Results 31 to 40 of about 1,565,920 (282)

A comprehensive survey on investigation techniques of exhaled breath (EB) for diagnosis of diseases in human body

Informatics in Medicine Unlocked, 2021
The breath analysis technique is one of the oldest investigation strategies for disease diagnosis and human health monitoring. This strategy explores volatile organic compound (VOCs) present in human exhaled breath (EB) and their organic connection with ...
Nilakshi Maruti Mule, Dipti D. Patil, Mandeep Kaur   +2 more
doaj   +1 more source

Evaluation of Solvent Compatibilities for Headspace-SIFT-MS Analysis of Pharmaceutical Products

Analytica, 2023
Procedures for determination of the residual solvent and volatile impurity content in pharmaceutical products usually rely on dissolution in a solvent, followed by headspace-gas chromatography (HS-GC) analysis. Whereas chromatographic systems can utilize
Mark J. Perkins, Leslie P. Silva, Vaughan S. Langford   +2 more
doaj   +1 more source

Cyanogenesis in Macadamia and Direct Analysis of Hydrogen Cyanide in Macadamia Flowers, Leaves, Husks, and Nuts Using Selected Ion Flow Tube–Mass Spectrometry

Foods, 2020
Macadamia has increasing commercial importance in the food, cosmetics, and pharmaceutical industries. However, the toxic compound hydrogen cyanide (HCN) released from the hydrolysis of cyanogenic compounds in Macadamia causes a safety risk. In this study,
Hardy Z. Castada, Jinyi Liu, Sheryl Ann Barringer, Xuesong Huang   +3 more
doaj   +1 more source

Kinetic Measurements of Cl Atom Reactions with C₅–C₈ Unsaturated Alcohols

Atmosphere, 2020
The reactions of five structurally similar unsaturated alcohols, i.e., (Z)-2-penten-1-ol, (E)-2-hexen-1-ol, (E)-3-hexen-1-ol, (Z)-3-hexen-1-ol, and 1-octen-3-ol, with Cl atoms in the gas phase, were investigated at 296 ± 2 K and 1 atm by the ...
Asma Grira, Cornelia Amarandei, Manolis N. Romanias, Gisèle El Dib, André Canosa, Cecilia Arsene, Iustinian Gabriel Bejan, Romeo Iulian Olariu, Patrice Coddeville, Alexandre Tomas   +9 more
doaj   +1 more source

Sub-parts per billion detection of trace volatile chemicals in human breath using Selected Ion Flow Tube Mass Spectrometry

BMC Research Notes, 2008
Background Selected ion flow tube mass spectrometry (SIFT-MS) allows the real time quantification of trace gases in air. Due to its tolerance of high humidity levels the technique is particularly suited to the chemical analysis of breath.
Ross Brian M
doaj   +1 more source

Hyphenated Mass Spectrometry versus Real-Time Mass Spectrometry Techniques for the Detection of Volatile Compounds from the Human Body

Molecules, 2021
Mass spectrometry (MS) is an analytical technique that can be used for various applications in a number of scientific areas including environmental, security, forensic science, space exploration, agri-food, and numerous others.
Oliver Gould, Natalia Drabińska, Norman Ratcliffe, Ben de Lacy Costello   +3 more
doaj   +1 more source

Adoption of SIFT-MS for VOC Pollution Monitoring in South Korea

Environments, 2023
The pollution of air and water with volatile organic compounds (VOCs), both hazardous and odorous, is of significant concern due to impacts on human health and quality of life, as well as the environment. South Korea is a highly industrialized and densely populated nation and suffers from significant VOC and ozone pollution.
Vaughan S. Langford, Minyoung Cha, Daniel B. Milligan, Jihoon Lee   +3 more
openaire   +1 more source

Evaluation of the effectiveness of an incentive strategy on the questionnaire response rate in parents of premature babies: a randomised controlled Study Within A Trial (SWAT) nested within SIFT [PDF]

, 2021
Background Loss to follow-up resulting in missing outcomes compromises the validity of trial results by reducing statistical power, negatively affecting generalisability and undermining assumptions made at analysis, leading to potentially biased and ...
Hurd, Madeleine, Edmund Juszczak, Bari, Vasha, Vasha Bari, Linsell, Louise, Oliver Hewer, on behalf of the SIFT Investigator Group, Dorling, Jon, Hewer, Oliver, Jon Dorling, Ursula Bowler, Christopher Partlett, Madeleine Hurd, Juszczak, Edmund, Bowler, Ursula, Partlett, Christopher, Louise Linsell   +16 more
core   +1 more source

Identification of Corrosive Volatile Compounds Found in the Headspace of Chicken Noodle Soup Retorted in Metal Cans

International Journal of Food Science, 2023
This study investigated the development of volatile compounds in the headspace of canned chicken noodle soup (and sought to develop appropriate testing methods).
Yajun Wu, Ken Ruffley, Elliot Dhuey, Christopher M. Hadad, Melvin A. Pascall   +4 more
doaj   +1 more source

Effect of pH, Reducing Sugars, and Protein on Roasted Sunflower Seed Aroma Volatiles

Foods, 2023
Sunflower seeds are a popular snack in many countries, such as the United States, China, and Spain. Sunflower seeds are typically roasted to create desirable aromas before being eaten.
Jessica Laemont, Sheryl Barringer
doaj   +1 more source