Search results for "amine"
showing 10 items of 7299 documents
Turvaa ja turvattomuutta Ranskassa
2016
Advantage of rare infanticide strategies in an invasion experiment of behavioural polymorphism
2012
Killing conspecific infants (infanticide) is among the most puzzling phenomena in nature. Stable polymorphism in such behaviour could be maintained by negative frequency-dependent selection (benefit of rare types). However, it is currently unknown whether there is genetic polymorphism in infanticidal behaviour or whether infanticide may have any fitness advantages when rare. Here we show genetic polymorphism in non-parental infanticide. Our novel invasion experiment confirms negative frequency-dependent selection in wild bank vole populations, where resource benefits allow an infanticidal strategy to invade a population of non-infanticidal individuals. The results show that infanticidal beh…
Hearing Voices in Dreams: Freud's Tossing and Turning with Speech and Writing
2002
In The Interpretation of Dreams, Freud repeatedly claims that there is no original speech in dreams. All dreamed speech is lifted from waking life and used as mutable raw material, whereas thought and writing can occur independently of the dream-work. This article examines Freud's insistence of the unoriginality and mutability of speech, which ostensibly reverses the supposed phonocentric tradition of Western metaphysics. Freud's interpretations, the article suggests, point to the importance of a general linguistic system in the production of meaning in dreams. This system includes non-phonetic writing and the concretization of abstract dream-thoughts into visual images. This concretization…
Fridays for Future Wants to Save the World : But What Do People Think about the Movement?
2023
Fridays for Future is a movement initiated by Greta Thunberg designed to alert millions around the globe that we are amid a climate crisis by organising Friday protests. Led by Greta Thunberg, Fridays for Future has generated a lot of press in recent years: Greta has been listed among the World’s 100 Most Powerful Women as well as being twice nominated for the Nobel Prize. Greta was also named Time Magazine Person of the Year 2019. While her cause may be noble, many criticise the Fridays for Future movement—others simply do not believe in its global warming message. Twitter is a powerful electronic word of mouth (eWOM) platform, which, as a form of peer-to-peer communication, has the power …
Immuno-fluorescence cytochemistry on thin frozen sections of human substantia nigra for staining of monoamine oxidase A and monoamine oxidase B: a pi…
1990
Immunofluorescence cytochemistry on thin frozen sections of human substantia nigra for staining of MAO-A and MAO-B revealed that only about 10% of the melanin-containing neurons are positive for MAO-A, while they are substantially free of MAO-B.
Synthèse et caractérisation de phosphine, borane, amine sur plateforme ferrocène polyfonctionnelle
2016
Ferrocene platforms are useful in coordination chemistry and catalysis thanks to their robustness and versatile functionalization. Ferrocene backbone allows the implantation of several key functional groups in a restricted space, inducing close proximity and potential polyfunctional cooperation (see for instance ferrocenyl polyphosphine chemistry). Ansa ferrocene and ferrocene bearing conformational control inducing groups maximizing the proximity of key groups have been widely reported.The first part of this thesis focuses on the synthesis of new borylated cyclopentadienyl, and their use in formation of borylated metallocenes bearing conformational constraints. NMR analysis and DFT calcula…
Phylogenetic analyses of Fusarium graminearum strains from cereals in Italy, and characterisation of their molecular and chemical chemotypes
2014
The Fusarium graminearum species complex (FGSC) is a pathogen of durum wheat and other cereals worldwide. The complex consists of at least 15 species that can produce various mycotoxins, including trichothecenes, associated with human and animals toxicoses. In particular, deoxynivalenol (DON), nivalenol (NIV) and their different acetylated derivatives can be produced by the different chemotypes of the complex. In this study, 90 strains, isolated mainly from wheat in Italy and belonging to the FGSC, were assessed for their phylogeny and their chemotype and trichothecene genotype. Almost all strains of the FGSC belonged to F. graminearum sensu stricto, whereas two strains were F. cortaderiae…
Evaluation of Fungistatic Activity of Eight Selected Essential Oils on Four Heterogeneous Fusarium Isolates Obtained from Cereal Grains in Southern P…
2020
The aim of the study was to determine the relationship between the chemical composition of eight commercial essential oils (EsO) (garlic, grapefruit, lemon grass, tea tree, thyme, verbena, cajeput, and Litsea cubeba) and their fungistatic activity in relation to four species of Fusarium: F. avenaceum, F. culmorum, F. graminearum, and F. oxysporum. The species identification of Fusarium isolates was confirmed by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometer. The determination of qualitative and quantitative chemical composition of the EsO was carried out using the gas chromatography&ndash
Comparison of the Fungistatic Activity of Selected Essential Oils Relative to Fusarium graminearum Isolates
2019
The aim of the study was to determine the chemical composition of lemon, rosewood, geranium and rosemary oils, and compare their effect on the sensitivity of Fusarium graminearum ZALF 24 and Fusarium graminearum ZALF 339 isolated from infected cereals. The tested oils were added to Potato Dextrose Agar (PDA) medium at concentrations of 0.125%, 0.25%, 0.5%, 1.0% and 2.0%. The activity of the oils on inhibition of the linear growth of mycelium was evaluated by measuring the growth of fungal colonies (growth index), while the fungistatic activity was evaluated on the basis of the percentage growth inhibition of a fungal colony and calculated according to Abbott&rsquo
Laboratoriotöiden tavoitteiden saavuttaminen fysiikan perus- ja aineopintokursseilla : kvantitatiivinen tutkimus opiskelijoiden kokemuksista
2017
Tämän työn tarkoituksena oli selvittää opiskelijoiden kokemuksia fysiikan perus- ja aineopintokurssien laboratoriotöiden hyödyllisyydestä. Tutkimus toteutettiin kyselyaineistolla, joka kerättiin Jyväskylän yliopiston fysiikan laitoksen oppilaslaboratoriossa kevään ja kesän 2016 aikana. Opiskelijat vastasivat kyselyyn vapaaehtoisesti suoritettuaan jonkin laboratoriotyön. Kerätyn aineiston pohjalta (\(N=154\) ) analysoitiin kvantitatiivisesti opiskelijoiden kokemuksia kehittymisestä viidessä keskeisessä laboratoriotyön tavoitteessa. Tämän lisäksi aineistosta etsittiin koettuun hyötyyn yhteydessä olevia taustamuuttujia moniluokitteluanalyysillä (MCA). Saatujen tulosten perusteella opiskelijat …