Results 91 to 100 of about 687,001 (274)

Quantitative ultraviolet measurements on wetted thin-layer chromatography plates using a charge-coupled device camera [PDF]

open access: yes, 2008
This paper presents the first study of the UV imaging of spots on thin-layer chromatographic plates whilst still wet with solvent. Imaging of spots of benzophenone during and after development was carried out using a charge-coupled device camera.
Bergstrom, E.T.   +4 more
core   +1 more source

Copper Single‐Atom Decorated Microfibrous Catalysts for Continuous‐Flow Reduction of Nitroarenes

open access: yesAdvanced Functional Materials, EarlyView.
Herein, a Cu‐single‐atom decorated, microfibrous catalyst (Cu1/CMF) is fabricated for chemoselective reduction of nitroarenes, demonstrating a superior processing capacity of 1.92 mmol mgcat−1 h−1 and superior durability (≥ 25 cycles) in a continuous‐flow manner.
Jiahan Zhao   +12 more
wiley   +1 more source

Living Liquid Metal Composites Embedded with Electrogenic Endospores for Next‐Generation Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
A new class of living liquid metal composites is introduced, embedding Bacillus subtilis endospores into eutectic gallium–indium (EGaIn). The spores enhance droplet coalescence, strengthen interfacial conductivity, and provide on‐demand electrogenic functionality after germination. The composites exhibit high conductivity, self‐healing, patternability,
Maryam Rezaie, Yang Gao, Seokheun Choi
wiley   +1 more source

Influence of way of finishing furniture segments on amount emissions VOCs

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010
The study deals with the influence of way of finishing furniture segments on amount emissions VOCs (volatile organic compounds). The so-called Volatile Organic Compounds (VOC) are among the largest pollution sources of both the internal and external ...
Petr Čech
doaj   +1 more source

Review of centrifugal liquid-liquid chromatography using aqueous two-phase solvent (ATPS) systems: Its scale-up and prospects for the future production of high-value biologics [PDF]

open access: yes, 2007
The future challenges in bioprocessing include developing new downstream processes for the purification and manufacture of the protein based medicines of the future to relieve the predicted bottleneck being produced by increasingly high titres from ...
Sutherland, I A
core  

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

open access: yesAdvanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra   +8 more
wiley   +1 more source

Leaf Flavonoids of Chrozophora Neck (Euphorbiceae) Members in Markazi Province Using Chromatographical Methods

open access: yesJournal of Medicinal Plants, 2012
Background: Flavonoids are as one set of the polyphenolic compounds among secondary metabolites in different organs of plants that are used in plant chemotaxonomy and pharmacognosy.
M Noori, H Zare Mayvan, A Mazaheri
doaj  

Stereospecific analysis of natural fats triacyl-sn-glycerols by means of enzymatic methods and high performance liquid chromatography

open access: yesGrasas y Aceites, 1995
This paper is a review in which difficulties for the determination of the fatty acid stereospecific positions in the triacyl-sn-glycerol molecules of natural fats are discussed.
V. Ruiz Gutiérrez, L. J. R. Barrón
doaj   +1 more source

Aspects of the quantitative separation and estimation of thiamine and its phosphate esters : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Biochemistry at Massey University [PDF]

open access: yes, 1981
Methods for the separation and estimation of thiamine, thiamine monophosphate and thiamine diphosphate which would be applicable to biological extracts were investigated.
Scott, Paul Noel
core  

Microneedle‐Based Biofertilizer Delivery Improves Plant Growth Through Microbiome Engineering

open access: yesAdvanced Functional Materials, EarlyView.
This figure shows how microneedles are used to deliver biofertilizers to enhance plant growth through microbial migration, metabolic reprogramming, and changes in plant endogenous microbiome. Abstract This study presents a microneedle‐based system for the delivery of rhizospheric biofertilizers into plant tissues to enhance growth.
Zhicheng Le   +14 more
wiley   +1 more source

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