Results 41 to 50 of about 1,899,364 (316)

Accurate Quantification of Lipid Species by Electrospray Ionization Mass Spectrometry — Meets a Key Challenge in Lipidomics

open access: yesMetabolites, 2011
Electrospray ionization mass spectrometry (ESI-MS) has become one of the most popular and powerful technologies to identify and quantify individual lipid species in lipidomics. Meanwhile, quantitative analysis of lipid species by ESI-MS has also become a
Kui Yang, Xianlin Han
doaj   +1 more source

Simultaneous Extraction and Determination of Lignans from Schisandra chinensis (Turcz.) Baill. via Diol-Based Matrix Solid-Phase Dispersion with High-Performance Liquid Chromatography

open access: yesMolecules, 2023
The quality of Schisandra chinensis (Turcz.) Baill. (S. chinensis) is principally attributed to lignan compounds. In this paper, a simple and rapid strategy for simultaneous extraction and determination of 10 lignans from S.
Yinpeng Wang   +3 more
doaj   +1 more source

Simultaneous Determination of Original, Degraded Ginsenosides and Aglycones by Ultra High Performance Liquid Chromatography Coupled with Quadrupole Time-of-Flight Mass Spectrometry for Quantitative Evaluation of Du-Shen-Tang, the Decoction of Ginseng

open access: yesMolecules, 2014
In the present study, an ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS) method for simultaneous determination of eleven original, fourteen degraded ginsenosides and five aglycones was
Shan-Shan Zhou   +7 more
doaj   +1 more source

Improving diagnosis of von Willebrand disease: Reference ranges for von Willebrand factor multimer distribution

open access: yesResearch and Practice in Thrombosis and Haemostasis, 2020
Background Phenotypic von Willebrand disease (VWD) classification requires multiple tests including analysis of multimeric distributions von Willebrand factor (VWF) and evaluation of its structure.
Inge Vangenechten, Alain Gadisseur
doaj   +1 more source

Quantification of Major Bacteria and Yeast Species in Kefir Consortia by Multiplex TaqMan qPCR

open access: yesFrontiers in Microbiology, 2020
Kefir grains are complex microbial systems of several groups of microorganisms. The identification and quantification of the microbial composition of milk kefirs was described in several studies, which provided an insight into the microbial consortia in ...
Fatemeh Nejati   +3 more
doaj   +1 more source

Screening and Characterization of Phenolic Compounds from Australian Grown Bananas and Their Antioxidant Capacity

open access: yesAntioxidants, 2021
Bananas are an essential source of staple food and fruit worldwide and are widely regarded as the world’s largest fruit crop, with more than 100 million tons total annual production.
Yasmeen M. Bashmil   +4 more
doaj   +1 more source

Comparison of different real-time PCR chemistries and their suitability for detection and quantification of genetically modified organisms [PDF]

open access: yes, 2008
Background The real-time polymerase chain reaction is currently the method of choice for quantifying nucleic acids in different DNA based quantification applications. It is widely used also for detecting and quantifying genetically modified components in
Žel Jana   +11 more
core   +1 more source

Avoiding misleading estimates of among‐individual variance caused by non‐random sampling of individuals in a changeable environment

open access: yesMethods in Ecology and Evolution
Animal ecologists frequently quantify variance in hierarchically structured traits in wild populations. Importantly, phenotypic plasticity within the period of measurement can modify the trait of interest in response to various unmeasured, temporally or ...
Denis Réale   +8 more
doaj   +1 more source

A New Specific and Sensitive RT-qPCR Method Based on Splinted 5′ Ligation for the Quantitative Detection of RNA Species Shorter than microRNAs

open access: yesNon-Coding RNA, 2021
Recently, we discovered a new family of unusually short RNAs mapping to 5.8S ribosomal RNA (rRNA) and which we named dodecaRNAs (doRNAs), according to the number of core nucleotides (12 nt) their members contain.
Marine Lambert   +2 more
doaj   +1 more source

Cup‐Like Nuclei Is a Hallmark of DUX4/ERG Acute Lymphoblastic Leukemia and Reveals Cytoplasmic Mitochondria Accumulation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Cup‐like nuclei are a distinctive morphological feature observed in certain cases of acute lymphoblastic leukemia (ALL). We provide evidence that they characterize DUX4/ERG ALL independently of IKZF1 deletion and reveal marked mitochondrial accumulation in this ALL subset.
Chloé Arfeuille   +9 more
wiley   +1 more source

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