Search results for "GC"
showing 10 items of 606 documents
Impact of Ageing on Pea Protein Volatile Compounds and Correlation with Odor
2022
Vegetal proteins are of high interest for their many positive aspects, but their ‘beany’ off-flavor is still limiting the consumer’s acceptance. The aim of this work was to investigate the conservation of pea protein isolate (PPI) during time and especially the evolution of their organoleptic quality under two storage conditions. The evolution of the volatile compounds, the odor and the color of a PPI has been investigated during one year of storage. PPI was exposed to two treatments mimicking a lack of control of storage conditions: treatment A with light exposition at ambient temperature (A—Light 20 °C) and treatment B in the dark but with a higher temperature …
Analytical Method for Quantification of Several Phthalate Acid Esters by Gas Chromatography-Mass Spectrometry in Coffee Brew Samples
2022
Several phthalate acid esters (PAEs), often called phthalate esters or phthalates, are substances classified as harmful due to their carcinogenic and mutagenic properties, and moreover, as dangerous for humans because they interfere with the endocrine system. In general, phthalic esters are used as plasticizers for different polymers and more other consumer products. In the present study, we describe a simple method to quantify PAEs in coffee brew using a liquid-liquid extraction without purification processes through analysing the obtained organic phase by GCMS in the single ion monitoring mode. The totals of single PAEs, in coffee brew samples analysed by us, are in the range of 159-5305 …
RTK-GPS pozicionēšanas sistēma un tās pielietojums pašbaucošajās automašīnās
2016
2016. gada maijā norisinājās automatizētas braukšanas sacensības GCDC 2016, kurās piedalījās arī Elektronikas un datorzinātņu institūts sadarbojoties ar Latvijas Universitāti. Priekš šīm sacensībām tika gatavota automašīna, kurā, lai tā varētu noteikt savu atrašanās vietu, bija nepieciešams implementēt precīzu pozicionēšanas iekārtu. Darba mērķis ir iepazīties ar GNSS darbības principiem, tai skaitā RTK-GPS, integrēt RTK-GPS iekārtu pašbraucošās automašīnas sistēmā, pārbaudīt tās atbilstību sacensību izvirzītajām prasībām, kā arī salīdzināt šo iekārtu ar citām RTK pozicionēšanas iekārtām. Darba rezultātā tika apskatīti GNSS darbības principi, aplūkota OxTS RT3003 v2 iekārtas specifikācija, …
Volatile compounds released by disturbed and undisturbed adults of Anchomenus dorsalis (Coleoptera, Carabidae, Platynini) and structure of the pygidi…
2011
Volatile compounds produced by adults of Anchomenus dorsalis under undisturbed and disturbed conditions were investigated with an all-glass aeration apparatus. GC-MS analysis of the crude extracts from undisturbed and disturbed adults highlighted four major volatile compounds, undecane, heneicosane, Z-9 tricosene and tricosane, of which significantly more undecane was released by disturbed adults compared to undisturbed beetles. The pygidial glands of adults of A. dorsalis were investigated using light and Transmission Electron Microscopy (TEM). Each gland showed dense aggregates of secretory cells organized into visually distinct lobes; a long collecting canal that drains the secretion tow…
Trasplante autólogo de médula ósea en ovario en mujeres con baja reserva ovárica y fallo ovárico precoz, para rejuvenecimiento del nicho ovárico y fa…
2020
Como consecuencia del retraso de la maternidad a causa de las tendencias sociales actuales, existe una disminución de la calidad y cantidad de ovocitos disponibles. Al problema fisiológico de la edad materna avanzada, se suman dos patologías, que asocian una baja reserva ovárica, en pacientes jóvenes: baja respuesta ovárica (del inglés, poor ovarian response, o POR), e insuficiencia ovárica prematura(del inglés, premature ovarian insufficiency o POI). Numerosos protocolos de estimulación ovárica han sido desarrollados, sin ser efectivos, siendo en la mayoría de los casos, la única opción para estas pacientes la donación de ovocitos/embriones. Varios trabajos de investigación han descrito la…
Odorous volatile organic compounds in waste and wastewater management
2012
Nota di commento a Trib. Cagliari 18 giugno 2010
2011
In attesa di introduzione della disciplina di regolamentazione dell’AGCOM, i conflitti di assegnazione dei numeri dei canali sul telecomando del digitale terrestre ricadono nella giurisdizione dell’autorità giudiziaria ordinaria
GC (GC VITAMIN D BINDING PROTEIN ) GĒNA ĢENĒTISKO VARIĀCIJU SAISTĪBA AR 1. TIPA CUKURA DIABĒTU LATVIJAS POPULĀCIJĀ
2022
Galvenais visu D vitamīna metabolītu saistīšanas vai transportēšanas proteīns ir GC gēns. GC gēna ģenētiskās variācijas ir saistītas ar dažādām autoimūnām slimībām, kā 1. tipa cukura diabētu (1TCD) dažādās populācijas. GC gēna polimorfismi rs4588 un rs7041 tiek pētīti kā potenciāli 1. tipa cukura diabēta ietekmējoši faktori. Šī pētījuma mērķis bija analizēt GC gēna viena nukleotīda polimorfisma (SNP; single nucleotide polymorphism) rs4588 A>C un rs7041 T>G asociāciju ar 1. tipa cukura diabētu Latvijas populācijā. Lai noskaidrotu šo abu polimorfismu potenciālo ietekmi uz saslimšanas iespējamību, tika genotipēti 185 1. tipa cukura diabēta slimnieku DNS paraugi un 253 kontroles grupas paraugi,…
Improving the Downwind Sail Design Process by Means of a Novel FSI Approach
2021
The process of designing a sail can be a challenging task because of the difficulties in predicting the real aerodynamic performance. This is especially true in the case of downwind sails, where the evaluation of the real shapes and aerodynamic forces can be very complex because of turbulent and detached flows and the high-deformable behavior of structures. Of course, numerical methods are very useful and reliable tools to investigate sail performances, and their use, also as a result of the exponential growth of computational resources at a very low cost, is spreading more and more, even in not highly competitive fields. This paper presents a new methodology to support sail designers in ev…
The Role of the Skeletal Muscle Secretome in Mediating Endurance and Resistance Training Adaptations
2021
Exercise, in the form of endurance or resistance training, leads to specific molecular and cellular adaptions not only in skeletal muscles, but also in many other organs such as the brain, liver, fat or bone. In addition to direct effects of exercise on these organs, the production and release of a plethora of different signaling molecules from skeletal muscle are a centerpiece of systemic plasticity. Most studies have so far focused on the regulation and function of such myokines in acute exercise bouts. In contrast, the secretome of long-term training adaptation remains less well understood, and the contribution of non-myokine factors, including metabolites, enzymes, microRNAs or mitochon…