Results 61 to 70 of about 11,923,039 (294)
Chemistry &Biodiversity, EarlyView.Abstract An infusion of Ageratina grandifolia, a traditional preparation, and major compounds [3,5‐diprenyl‐4‐hydroxyacetophenone (1), O‐methylencecalinol (2), encecalin (3), and encecalinol (4)], tested at 10, 31.6, and 100 mg/kg, intragastrically administered, showed a significant antinociceptive effect in both phases of the formalin test in mice ...
José Alberto Gutiérrez‐González +5 more
wiley +1 more source
Statistical Time-Frequency Multiplexing of HD Video Traffic in DVB-T2
International Journal of Digital Multimedia Broadcasting, 2009 Digital video broadcast-terrestrial 2 (DVB-T2) is the successor of DVB-T standard that allows a two-dimensional multiplexing of broadcast services in time and frequency domains.
Mehdi Rezaei +2 more
doaj +1 more source
Evaluation of diversity gains for DVB-T systems [PDF]
, 2008 Copyright @ 2008 Eurescom GmbHThe requirements for future DVB-T/H networks demand that broadcasters design and deploy networks that provide ubiquitous reception in challenging indoors and other obstructed situations.
Bard, M +4 more
core
Chemistry &Biodiversity, EarlyView.ABSTRACT Volatile secondary metabolites in plants can serve as valuable biomarkers for the plant's health, stress response, and pest or disease detection. We have investigated the volatilome of Acer saccharum (sugar maple) leaves using two complementary extraction techniques: headspace‐solid phase micro‐extraction coupled with gas chromatography‐mass ...
Jean‐Christophe Séguin +2 more
wiley +1 more source
Sensors, 2020 This paper presents the application of the time-frequency (TF) reassignment technique in passive forward scattering radar (FSR) using Digital Video Broadcasting – Terrestrial (DVB-T) transmitters of opportunity operating in the Very High Frequency (VHF ...
Marek Płotka +4 more
doaj +1 more source
Chemistry &Biodiversity, EarlyView.The volatile profile of Betula papyrifera hardwood has been characterized using both hydrodistillation and HS‐SPME coupled with GC‐MS/FID. Hydrodistillation yields a fatty acid‐rich essential oil, while HS‐SPME reveals a broader range of low‐molecular‐weight volatiles, including aromatics and terpenoids.
David Fortier +2 more
wiley +1 more source
Chemistry–Methods, EarlyView.Fast and Facile! The use of a solid‐phase microextraction fiber allows direct sampling of aqueous solutions of ammonia for quantification using gas chromatography‐mass spectrometry (GC‐MS). The technique is insensitive to the presence of organic cosolvents or transition‐metal ions, making it particularly well suited for the analysis of catalytic ...
Doha Zidouhia +2 more
wiley +1 more source
Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis
ChemSusChem, Volume 18, Issue 6, March 15, 2025.The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo +4 more
wiley +1 more source
Wieviel Feldstärke ist notwendig für akzeptable portabel-indoor-Versorgung mit digitalem Rundfunk? [PDF]
Advances in Radio Science, 2006 Durch eine Fragebogenaktion wurde ermittelt, welche Anforderungen potentielle Teilnehmer an die Güte des indoor-portabel-Empfangs von Radio und Fernsehen stellen.
J. Philipp
doaj
A survey of handover algorithms in DVB-H [PDF]
, 2006 Digital Video Broadcasting for Handhelds (DVB-H) is a standard for broadcasting IP Datacast (IPDC) services to mobile handheld terminals. Based on the DVB-T standard, DVB-H adds new features such as time slicing, MPE-FEC, in-depth interleavers ...
Owens, TJ, Vare, J, Yang, XD
core +1 more source