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Deciphering Regulatory Mechanisms in M. xanthus Using Isotopic Ratio Outlier Analysis (IROA) for Metabolome-wide Quantitation
Daniel Krug 1,2, Carsten Volz 1, Aiko Barsch 3, Chris Beecher 4, Felice de Jong 4, Rolf Müller 1,2

Comprehensive study of regulation in myxobacteria with an untargeted metabolomics setup using Isotopic Ratio Outlier Analysis (IROA) and UHR-Q-TOF

Reliable relative quantitation of known and unknown metabolites from a myxobacterial mutant strain in response to induction of the transcriptional antirepressor taA

Compound identification facilitated by the use of ultra-high resolution MS and the knowledge of the number of carbons in each molecule due to IROA

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Analysis of Imported Children's Toys for Heavy Metals
Patricia Atkins, Huifang Lang, William Driscoll

Children’s consumer products have been an active focus for study and regulation due to their ability to expose infants and children to potentially damaging and dangerous chemicals.

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Intact Protein LC-MS: How to Overcome the Challenges?
Robert van Ling, Evert-Jan Sneekes, Sebastiaan Dolman, Laurent Rieux, Mauro DePra, Christian Ravnsborg, Dafydd Milton, Remco Swart

Purpose: Facilitate intact protein LC-MS without compromising performance.
Methods: Construct prototypes of integrated column and sprayer dedicated for intact protein separations and compare performance.
Results: Three prototypes have been directly compared and all showed good protein separations, each with their unique area of strength.

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Instant Connect Gas Sampling Valve Module Introducing a New Flexibility in Gas Sampling for GC and GCMS
Stefano Pelagatti, Paolo Magni, Fausto Pigozzo

Purpose: We present a newly developed gas sampling valve module for the Thermo Scientific™ TRACE™ 1300 Series Gas Chromatograph (GC).

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GC-MS/MS ANALYSIS OF BENZODIAZEPINES USING ANALYTE PROTECTANTS
Jeremy Matthews, Alex Chen, Flavio Bedini

Purpose: Assess the feasibility of using analyte protectants to improve the analysis of benzodiazepines.

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GC-MS/MS Analysis of Pesticide Residues in Green Tea Extracted by QuEChERS with Acetonitrile as Final Solvent
Cojocariu C., Morgan P., Silcock P., Pelagatti S., Magni P. and Pigozzo F.

This poster describes the analysis of several challenging pesticides from green tea samples using GC-MS/MS and acetonitrile as final extraction solvent. The compounds analysed are representatives of various classes of pesticides, such as carboxamids, OC, OP, pyrethriods, aromatic, phenylamides.

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Exploring The Benefits Of Automated Unattended Sample Derivatization Prior To Gas Chromatography Analysis
A. Caruso, M. Santoro, P. Magni, S. Pelagatti, R. Facchetti

Purpose: Exploring the possibility to perform the sample preparation steps necessary for the derivatization of analytes in a fully automated and reliable way by means of the same robotic sampler used for sample injection into the gas chromatograph.
Methods: As an example of application we screened dairy products for melamine and its derivates presence via GC-MS/MS.
Results: The outcome are good and precise results that show how it is possible to reliably automate sample preparation opera

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Determination of Veterinary Drug Residues in Milk by GC/MS and GC/ECD
Yu Chongtian, Lv Jianxia

Purpose: Develop a rapid, sensitive method for determining amitraz and its metabolites in milk.
Methods: Samples were hydrolyzed in acidic condition and extracted with hexane. After derivativation, the samples were analyzed by GC-ECD or directly by GC-MS.
Results: The results show that GC-MS determination of amitraz and its metabolites is rapid and sensitive.

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Automated, Rapid And Reliable Determination Of Dissolved Gases In Water By Static Headspace – Gas Chromatography
A. Caruso, M. Santoro, F. Bedini, P. Magni, S. Pelagatti

Purpose: Exploring the possibility to perform a quantitative determination of dissolved gases in water in a reliable and accurate way. Methods: The quantification of dissolved gases is performed by building a calibration curve spiking blank water samples with increasing quantities of saturated water followed by headspace sampling and GC/ FID analysis. Results: The results show good correlation factors and limit of quantification lower than 10ppb for the four gas analyzed.

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Showing Results 131 - 140 of 1119
Scientific News
Novel Organoid Matrix Enables Long-Term Culture of Human Hepatocytes
Organoid growth matrix to enable long-term culture of genome-stable bipotent stem cells from adult human liver.
New Metabolic Biomarkers Predict Future Cardiovascular Diseases
Scientists of the Helmholtz Zentrum München contributed to the analysis of the biomarkers.
Study Links Deficiency of Cellular Housekeeping Gene with Aggressive Forms of Breast Cancer
Research team studies genes involved in the autophagy process and their roles in cancer, aging, infections, and neurodegenerative diseases.
New Method For Identifying Most Aggressive Childhood Cancers
A research group at Lund University in Sweden has found a new way to identify the most malignant tumours in children. The method involves studying genetic ‘micro-variation’, rather than the presence of individual mutations.
Powerful Tool Promises To Change The Way Scientists View Proteins
Aquaria, a publicly available web resource that streamlines and simplifies the process of gleaning insight from 3D protein structures, is fast, easy-to-use and contains twice as many models as all other similar resources combined.
Rapid Test Kit Detects Dengue Antibodies from Saliva
IBN’s MedTech innovation simplifies diagnosis of infectious diseases.
“Unprecedented Sensitivity and Specificity” in Ovarian Cancer
Study of the use of the Parsortix system as a clinical application in the detection and treatment of ovarian cancer patients.
Nanoparticle Lights Up Artery-Clogging Plaque
A new imaging agent that may light up dangerous plaque in arteries is to be evaluated in a clinical trial.
Study Uncovers Range of Molecular Alterations in Head and Neck Cancers
TCGA tumor genome sequencing analyses offer new insights into the effects of HPV and smoking, and find genomic similarities with other cancers.
Beating The Clock: New Treatment For Rabies Developed
University of Georgia researchers have developed a new treatment for rabies.
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