Search results for "TRIAC"
showing 10 items of 203 documents
One-Pot Analysis: a New Integrated Methodology for Determination of TAG and FA Determination through LC/MS and in-silico Saponification
2017
Vegetable oils differ significantly for their lipid profile and are mainly constituted by triacylglycerols (TAGs). These are esters formed bonding glycerol to three fatty acids (FAs). To the best of our knowledge, FA and TAG profiles in oils and fats are obtained using at least two different experimental techniques. In particular, FA determination requires elaborated procedures for sample preparation and analyte derivatization. In this work, we propose a one-pot analysis able to determine both TAG and FA contents of edible oils, using experimental data obtained from a simple liquid chromatography/mass spectrometry determination of TAGs. This experimental procedure is followed by an in silic…
Carta del abate D. Juan Andres a su hermano D. Carlos Andres, dandole noticia de la literatura de Viena.
1794
Sig. [ ]2, A-H8 Vinyeta a port. Alguna nota a peu de p. - Reclams
A Nanoparticulate Drug-Delivery System for Rivastigmine: Physico-Chemical and in vitro Biological Characterization
2007
The preparation and characterization of surface-PEGylated polymeric nanoparticles are described. These systems were obtained by UV irradiation of PHM and PHM-PEG 2000 as an inverse microemulsion, using an aqueous solution of the PHM/PHM-PEG 2000 copolymer mixture as the internal phase and triacetin saturated with water as the external phase, and characterized by dimensional analysis, zeta-potential measurements and XPS. in vitro biological tests demonstrated their cell compatibility and their ability to escape from phagocytosis. Rivastigmine was encapsulated into the nanoparticle structure and drug-release profiles from loaded samples were investigated in PBS at pH = 7.4 and human plasma.
A New species of long-eared bat (Chiroptera, Vespertilionidae) from Sardinia (Italy)
2002
We describe a new species of long eared bat, genus Plecotus, from the island of Sardinia (Italy). The new species is clearly distinguishable from other European Plecotus species by its mitochondrial 16S rRNA gene (4.1–9.6 % sequence divergence) as well as by a unique combination of morphological characters such as brownish colour of dorsal pelage, a relatively large thumb and thumb claw, an almost cylindrical form of the penis and the characteristic shape of the baculum. The most important morphological diagnostic characters is a relatively long (≥18mm) and wide (≥6mm) tragus. The new species is currently known from three localities on Sardinia. In addition to the new species we discovered …
Monaster bazylianów w Wechracie w świetle dokumentów sporządzonych przed jego kasatą w 1808 roku
2019
W roku 1808 zostały sporządzone inwentarze, m.in. „Realności klasztoru bazyliańskiego werchrackiego”, dzięki którym można w przybliżeniu ocenić jego sytuację materialną. Dokumenty te są obecnie częścią zasobu Centralnego Państwowego Archiwum Historycznego Ukrainy we Lwowie. Klasztor należał wówczas do diecezji przemyskiej, dekanatu potylickiego i cyrkułu żółkiewskiego. Przyczyną podjęcia pracy nad inwentarzem była planowana konfiskata mienia werchrackich bazylianów. Okazało się jednak, że z powodu zaniedbania kasata została odsunięta w czasie, a dostępne dzisiaj regestry nie były pierwszą próbą dokonania spisu dóbr należących do bazylianów w tym trudnym okresie. Konfiskatę dóbr ruchomych i …
Interesterification of rapeseed oil catalyzed by tin octoate
2014
The interesterification of rapeseed oil was performed for the first time by using tin octoate as Lewis acid homogeneous catalysts and methyl or ethyl acetate as acyl acceptors in a batch reactor, within the temperature range 393–483 K. The yields in fatty acid ethyl esters (FAEE) and triacetin (TA) after 20 h of reaction time increased from 8% and 2%–to 61% and 22%, respectively, when the reaction temperature increased from 423 to 483 K. An optimum value of 40 for the acyl acceptor to oil molar ratio was found to be necessary to match good fatty acid alkyl ester yields with high enough reaction rate. The rate of generation of esters was significantly higher when methyl acetate was used as a…
Improving sensitivity in simultaneous determination of copper carboxylates by nonaqueous capillary electrophoresis
2005
Abstract A new method of nonaqueous capillary electrophoresis (NACE) with UV spectrophotometric detection was developed and optimized for the simultaneous determination of seven carboxylates (trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid (CDTA), diethylenetriaminepentaacetic acid (DTPA), ethylenediaminetetraacetic acid (EDTA), N-(2-hydroxyethyl)ethylenediamine-N,N′,N′-triacetic acid (HEDTA), nitrilotriacetic acid (NTA), 1,3-diaminopropane-N,N,N′,N′-tetraacetic acid (PDTA) and triethylenetetraaminehexaacetic acid (TTHA)) as copper complexes. The method development was carried out by using a fused silica capillary. Background electrolyte (BGE) was optimized and the best separation a…
Fatty Acid Transporter CD36 Mediates Hypothalamic Effect of Fatty Acids on Food Intake in Rats
2013
Subject Areas: carotid arteries; emulsions; fatty acids; gene expression; heparin; hypothalamus; neurons; oxidation.; International audience; Variations in plasma fatty acid (FA) concentrations are detected by FA sensing neurons in specific brain areas such as the hypothalamus. These neurons play a physiological role in the control of food intake and the regulation of hepatic glucose production. Le Foll et al. previously showed in vitro that at least 50% of the FA sensing in ventromedial hypothalamic (VMH) neurons is attributable to the interaction of long chain FA with FA translocase/CD36 (CD36). The present work assessed whether in vivo effects of hypothalamic FA sensing might be partly m…
Direct HPLC Monitoring of Lipase Activity in Reverse Micellar Media
1995
Given the profusion of biotechnological applications of the nonaqueous use of lipases, we have evaluated the possibilities of exploiting the inherent advantages of high performance liquid chromatography (HPLC) for a simple, rapid assay of lipase activity in reverse micellar media, as a convenient alternative to previously reported spectroscopic methods, using both a model system and esterification reaction, and different commercial lipases. The results obtained after a screening for optimized chromatographic conditions in the reverse-phase mode indicate that a satisfactory resolution of the reaction components can be obtained following a straightforward protocol, which permits an accurate, …
Coronella austriaca (Smooth snake) and Zamenis longissimus (Aesculapian Snake) Defensive Behavior
2021
We report for the first time caudal vibrating defensive behavior in Coronella austriaca e Zamenis longissimus