Results 91 to 100 of about 303,782 (301)

Comparison of carrier gases for the separation and quantification of mineral oil hydrocarbon (MOH) fractions using online coupled high performance liquid chromatography-gas chromatography-flame ionisation detection

open access: yes
On-line coupled high performance liquid chromatography-gas chromatography-flame ionisation detection (HPLC-GC-FID) was used to compare the effect of hydrogen, helium and nitrogen as carrier gases on the chromatographic characteristics for the ...
Groschke, Matthias, Becker, Roland
core   +1 more source

Characterisation of the Volatile Compounds and Key Odourants in Japanese Mandarins by Gas Chromatography–Mass Spectrometry and Gas Chromatography–Olfactometry

open access: yesSeparations
Japanese mandarins are becoming increasingly popular due to their pleasant aroma. The volatiles in four varieties of Japanese mandarins (Iyokan, Ponkan, Shiranui, and Unshiu mikan) were extracted by headspace solid-phase microextraction (HS-SPME) and ...
Lingyi Li   +9 more
doaj   +1 more source

Label‐Free Detection of a Neurotransmitter Using an Aptamer‐Functionalized Amorphous IGZO Transistor

open access: yesAdvanced Materials Interfaces, EarlyView.
An aptamer‐functionalized amorphous IGZO thin‐film transistor enables label‐free electrical detection of the neurotransmitter serotonin under liquid‐gated operation. Stepwise surface functionalization ensures stable biomolecule integration and efficient electrostatic coupling.
Ngoc Thanh Ho   +3 more
wiley   +1 more source

Production of Cannabis Products Lab (BT 243) class syllabus

open access: yes, 2023
This course emphasizes skills needed to work in the Cannabis industry. Students will build on basic laboratory skills, learning product development and testing methods specific to the industry.
Paul, Emily
core   +1 more source

Turning Humidity Into Function: Heterojunction Interfaces for Dual‐Mode Removal of Nonpolar Vapors

open access: yesAdvanced Materials Interfaces, EarlyView.
A wire‐grown MIL–88B(Fe)@Fe3(PO4)2 heterojunction converts ambient humidity into a functional mediator for nonpolar VOC purification. Water forms a hydration layer that enhances cyclohexane uptake while simultaneously promoting •OH generation, resulting in synergistic adsorption–photocatalysis under humid conditions.
Jinwook Lee, Jooyoun Kim
wiley   +1 more source

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

open access: yesAdvanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard   +7 more
wiley   +1 more source

Quantitative Aspects of Gas Chromatography

open access: yesCHIMIA, 1963
R. S. Evans, R. P. W. Scott
doaj   +1 more source

Enhancing Small Molecule Sensing With Aptameric Functionalized Nano Devices

open access: yesAdvanced Materials Technologies, EarlyView.
Unveiling an ultra‐sensitive, non‐invasive neurotransmitter sensor. For the first time, a nanoscale sensor for detecting an important neurotransmitter was demonstrated using micro‐electromechanical systems (MEMS) technology. Our approach utilized field‐effect transistor (FET)‐based readout to enable pico‐molar detection of biomarkers in sweat.
Thi Thanh Ha Nguyen   +11 more
wiley   +1 more source

Estudo quimico e avaliação da atividade analgesica e antimicrobiana de hedyosmum brasiliense mart.ex.miq (chloranthaceae). [PDF]

open access: yes, 1997
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.O estudo químico de Hedyosmum brasiliense Mart. ex. Miq. planta medicinal conhecida pelo nome popular de cidreira ou erva cidreira no sul do Brasil,
Guedes, Alessandro
core  

Detection and quantification of phytosterols in yogurt using gas chromatography [PDF]

open access: yesBihdāsht-i Mavādd-i Ghaz̠āyī, 2019
Sterols form the largest proportion of the unsaponifiable fraction of lipids. Plant fats and oils contain phytosterol as naturally occurring constituents.
M. Jeddy, J. Khandaghi
doaj  

Home - About - Disclaimer - Privacy