Results 81 to 90 of about 1,704,789 (385)

Murine Models and Human Cell Line Models to Study Altered Dynamics of Ovarian Follicles in Polycystic Ovary Syndrome

Advanced Biology, EarlyView.
The manuscript examines preclinical murine and human models to study polycystic ovary syndrome (PCOS), delving into the cellular and molecular mechanisms underlying altered ovarian follicular dynamics. It explores the cellular interactions involved in normal and PCOS ovaries and outlines the current and novel strategies in the search for preclinical ...
Arturo Bevilacqua, Cristiano Giuliani, Giovanna Di Emidio, Samuel H Myers, Vittorio Unfer, Carla Tatone   +5 more
wiley   +1 more source

Ageing of resin from Pinus species assessed by infrared spectroscopy [PDF]

, 2016
Resins obtained from Pinus genus species have been widely used in very different fields throughout history. As soon as the resins are secreted, molecular changes start altering their chemical, mechanical and optical properties.
Beltran Sanchidrian, Victòria, Buti Papiol, Salvador, Pradell Cara, Trinitat, Salvadó Cabré, Nativitat   +3 more
core   +2 more sources

On the microstructure of polypropylenes by pyrolysis GC–MS [PDF]

Polymer Degradation and Stability, 2014
Abstract In this work the pyrolysis products of various Polypropylenes (PP) have been identified in terms of structure and isomerism. The different microstructure of Polypropylenes reflected in the pyrolysis products provides a fingerprint which can be used to asses the origin of the different polymers. The distinction amongst various PP was possible
LUDA DI CORTEMIGLIA, Maria Paola, Dall'Anese Riccardo   +1 more
openaire   +2 more sources

Geometry‐Based Scan Curve Analysis: Rapid Method for the Evaluation of Scan Strategies in Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold, Michael Willeke, Alexander Sommereyns, Matthias Gehring, Parmar Yankit Dineshbhai, Nadine Stratmann, Anna Rosa Ziefuss, Sebastian‐Paul Kopp, Stephan Barcikowski, Michael Schmidt   +9 more
wiley   +1 more source

Metabolomics : a tool for studying plant biology [PDF]

, 2005
In recent years new technologies have allowed gene expression, protein and metabolite profiles in different tissues and developmental stages to be monitored.
Gullberg, Jonas
core  

Determination of Glyphosate Levels in Breast Milk Samples from Germany by LC-MS/MS and GC-MS/MS.

Journal of Agricultural and Food Chemistry, 2016
This study describes the validation and application of two independent analytical methods for the determination of glyphosate in breast milk. They are based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass ...
A. Steinborn, L. Alder, B. Michalski, P. Zomer, Paul Bendig, S. Martínez, H. Mol, T. Class, Nathalie Costa Pinheiro   +8 more
semanticscholar   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Comparison of LC-MS-MS and GC-MS Analysis of Benzodiazepine Compounds Included in the Drug Demand Reduction Urinalysis Program.

Journal of Analytical Toxicology, 2016
Liquid chromatography-tandem mass spectrometry (LC-MS-MS) offers specific advantages over gas chromatography-mass spectrometry (GC-MS) such as the ability to identify and measure a broader range of compounds with minimal sample preparation.
E. Perez, J. Knapp, C. K. Horn, Stedra L. Stillman, J. E. Evans, D. Arfsten   +5 more
semanticscholar   +1 more source

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

Advanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta, Metodija Najdoski, Violeta Koleva, Theocharis Tzanoudakis, Frederik Firschke, Peter Bogdanoff, Matthew T. Mayer   +8 more
wiley   +1 more source

Detection and metabolic investigations of a novel designer steroid: 3-chloro-17α-methyl-5α-androstan-17β-ol

, 2015
In 2012, seized capsules containing white powder were analyzed to show the presence of unknown steroid-related compounds. Subsequent gas chromatography–mass spectrometry (GC-MS) and nuclear magnetic resonance (NMR) investigations identified a mixture of ...
Blakey, Karen, Boyd, Sue, Cawley, Adam T., Handelsman, David J., Heather, Alison, McGrath, Kristine C., McLeod, Malcolm D., Waller, Christopher C., Willis, Anthony C.   +8 more
core   +1 more source