Results 71 to 80 of about 3,036,350 (270)

Quantitative thing layer chromatography for evaluation of carotenoid composition of tomatoes Solanum lycopersicum

open access: yesОвощи России, 2018
Qualitative and quantitative evaluation of tomatoes carote-noid composition is considered to be the basis of tomato selection. Among known methods of identification and carotenoid content determination thing layer chromatography (TLC) is characterized by
N. A. Golubkina   +5 more
doaj   +1 more source

Programmable Functional Silicification of DNA Origami Nanostructures

open access: yesAdvanced Materials, EarlyView.
This work introduces additional functionality into silica‐coated DNA origami nanostructures using non‐standard silica precursors. A fluorescent precursor enables enhanced intracellular tracking, while a disulfide‐containing reagent yields redox‐responsive, degradable silica coatings.
Anna V. Baptist   +4 more
wiley   +1 more source

ESTIMATION OF METHIONINE AND LYSINE IN PROTEIN BY THIN-LAYER CHROMATOGRAPHY [PDF]

open access: yesIranian Journal of Public Health, 1983
A thin-layer chromatography method has been developed and evaluated for the separation and determination of lysine and methonine in a mixture of amino acids obtained from acid or enzyme hydrolysis of protein.
H.Mohammadiha, P. Mostafavi
doaj   +2 more sources

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  

Electrolyte Design for Fast‐Charging Lithium‐Based Batteries

open access: yesAdvanced Materials, EarlyView.
A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley   +1 more source

Evaluation of Aflatoxin in Gossypium hirsutum (Cottonseeds) and Arachis hypogaea (Peanuts

open access: yesUMYU Journal of Microbiology Research, 2017
This study was carried out to isolate moulds and detect aflatoxin in maize sold in Katsina Central Market. A total of ten samples of maize were collected from five different vendors in the market and subjected to mould isolation ...
Shamsuddeen, U., Hussaini, M., Kabir, A.
doaj   +1 more source

Thin Layer Chromatography of Marihuana

open access: yesJournal of AOAC INTERNATIONAL, 1972
The various TLC methods employed in the separation and identification of Cannabis products to date are reviewed. Two solvent systems are recommended for rapid identification of marihuana: multiple development, semiquantitatiom, and wedge and loose-layer chromatographic techniques are discussed.
J M, Parker, H L, Fiske
openaire   +2 more sources

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

open access: yesAdvanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park   +14 more
wiley   +1 more source

Sub‐Nanometer Cobalt on Tungsten Titanium Carbide MXene (W2TiC2Tx): An Electrocatalyst for Highly Efficient and Stable Alkaline Hydrogen Evolution at Industrial‐Scale Current Density

open access: yesAdvanced Materials, EarlyView.
A novel W2TiC2Tx MXene prepared through a MAX‐phase route supports sub‐nanometer Co for highly efficient alkaline hydrogen evolution. Strong Co–W interfacial interactions optimize hydrogen adsorption and catalytic activity, enabling low overpotentials of 63 mV at 10 mA cm−2, small Tafel slope of 44.3 mV dec−1, and exceptional durability at industrially
Xiaopeng Liu   +15 more
wiley   +1 more source

Thin-layer chromatography: An efficient method for the optimization of dispersive liquid-liquid microextraction

open access: yesActa Chimica Slovenica, 2018
Thin-layer chromatography (TLC) is an often omitted analytical technique due to its lower sensitivity and separation capacity. Even in the era of high-performance liquid chromatography (HPLC), thin-layer chromatography still offers many advantages, such ...
Elena Kupcova   +2 more
doaj   +1 more source

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