Results 11 to 20 of about 70,371 (306)

Surface‐Enhanced Raman Spectroscopy for the Detection of a Metabolic Product in the Headspace Above Live Bacterial Cultures

Angewandte Chemie - International Edition, 2018
In situ surface-enhanced Raman spectra of the headspace above cultures of six bacterial species showed strong characteristic bands from chemisorbed methyl sulfide.
Sheila Patrick, Steven E J Bell
exaly   +2 more sources

Influence of headspace pressure on methane production in Biochemical Methane Potential (BMP) tests

Waste Management, 2016
The biochemical methane potential test is the most commonly applied method to determine methane production from organic wastes. One of the parameters measured is the volume of biogas produced which can be determined manometrically by keeping the volume ...
Jesus A Montes, JOSÉ Luis Rico, CARLOS Rico   +2 more
exaly   +2 more sources

Sixteen years of innovation in youth mental healthcare: Outcomes for young people attending Australia’s headspace centre services

PLoS ONE, 2023
Australia’s headspace initiative is world-leading in nation-wide youth mental healthcare reform for young people aged 12 to 25 years, now with 16 years of implementation.
D. Rickwood, J. McEachran, A. Saw, N. Telford, J. Trethowan, P. McGorry   +5 more
semanticscholar   +1 more source

Health Care Workers’ Need for Headspace: Findings From a Multisite Definitive Randomized Controlled Trial of an Unguided Digital Mindfulness-Based Self-help App to Reduce Healthcare Worker Stress

JMIR mHealth and uHealth, 2022
Background Health care workers experience high stress. Accessible, affordable, and effective approaches to reducing stress are lacking. In-person mindfulness-based interventions can reduce health care worker stress but are not widely available or ...
Heather F. Taylor, K. Cavanagh, A. Field, C. Strauss   +3 more
semanticscholar   +1 more source

Efficacy and Conflicts of Interest in Randomized Controlled Trials Evaluating Headspace and Calm Apps: Systematic Review

JMIR Mental Health, 2022
Background Although there are thousands of mental health apps, 2 apps, Headspace and Calm, claim a large percentage of the marketplace. These two mindfulness and meditation apps have reached tens of millions of active users.
Alison O'Daffer, S. Colt, Akash R. Wasil, Nancy Lau   +3 more
semanticscholar   +1 more source

Identification of Terpene Compositions in the Leaves and Inflorescences of Hybrid Cannabis Species Using Headspace-Gas Chromatography/Mass Spectrometry

Molecules, 2023
Although cannabidiol and tetrahydrocannabinol in Cannabis species exert their pharmacological effects via the endocannabinoid system, it is believed that other phytochemicals, particularly terpenes, can modulate therapeutic outcomes through the entourage
Sangin Lee, Eun Jae Kim, Eunjeong Kwon, Seo Jeong Oh, Mansoo Cho, Chul Min Kim, Wonwoong Lee, Jongki Hong   +7 more
doaj   +1 more source

Antibacterial Activity of Thymus vulgaris L. Essential Oil Vapours and Their GC/MS Analysis Using Solid-Phase Microextraction and Syringe Headspace Sampling Techniques

Molecules, 2021
While the inhalation of Thymus vulgaris L. essential oil (EO) is commonly approved for the treatment of mild respiratory infections, there is still a lack of data regarding the antimicrobial activity and chemical composition of its vapours.
J. Antih, M. Houdkova, K. Urbanova, L. Kokoska   +3 more
semanticscholar   +1 more source

Technical note: CO2 is not like CH4 – limits of and corrections to the headspace method to analyse pCO2 in fresh water

, 2021
. Headspace analysis of CO 2 frequently has been used to quantify the concentration of CO 2 in fresh water. According to basic chemical theory, not considering chemical equilibration of the carbonate system in the sample vials will result in a systematic
M. Koschorreck, Y. Prairie, Jihyeon Kim, R. Marcé   +3 more
semanticscholar   +1 more source

Characterization of the Key Aroma Compounds of Three Kinds of Chinese Representative Black Tea and Elucidation of the Perceptual Interactions of Methyl Salicylate and Floral Odorants

Molecules, 2022
Jinjunmei (JJM), Keemun (KM), and Dianhong (DH) are the representative black teas in China, and they have always been favored by consumers. In this study, we aim to obtain the aroma characteristic information of volatile components in black tea samples ...
Yunwei Niu, Yiwei Ma, Zuobing Xiao, Jiancai Zhu, Wen Xiong, Feng Chen   +5 more
doaj   +1 more source

Fast and Reliable Multiresidue Analysis of Aromas in Wine by Means of Gas Chromatography Coupled with Triple Quadrupole Mass Spectrometry

Analytica, 2021
The paper would like to show a direct injection into GC-MS/QqQ for the determination of secondary aromas in white wine samples fermented in two different ways.
Ettore Guerriero, Massimo Iorizzo, Marina Cerasa, Ivan Notardonato, Bruno Testa, Francesco Letizia, Cristina Di Fiore, Mario Vincenzo Russo, Pasquale Avino   +8 more
doaj   +1 more source