Search results for "PKI"
showing 10 items of 21 documents
Lipkin method of particle-number restoration to higher orders
2014
Background: On the mean-field level, pairing correlations are incorporated through the Bogoliubov-Valatin transformation, whereupon the particle degrees of freedom are replaced by quasiparticles. This approach leads to a spontaneous breaking of the particle-number symmetry and mixing of states with different particle numbers. In order to restore the particle number, various methods have been employed, which are based on projection approaches before or after variation. Approximate variation-after-projection (VAP) schemes, utilizing the Lipkin method, have mostly been used within the Lipkin-Nogami prescription. Purpose: Without recurring to the Lipkin-Nogami prescription, and using instead st…
Psychometric Properties of Two Brief Versions of the Hopkins Symptom Checklist: HSCL-5 and HSCL-10
2019
The Hopkins Symptom Checklist–25 (HSCL-25) is a widely applied measure of depression and anxiety. The present study examines two of its short forms—the HSCL-5 and HSCL-10, which have been proposed by previous research—in a representative sample of the German general population. To this end, we conducted exploratory and confirmatory analysis on two subsamples ( n = 1,246 and n = 1,216). Our results suggest that, compared with the HSCL-25, both short forms represent economical ways of assessing depression and anxiety. Model fit was good and correlations with established measures demonstrate convergent validity. Both HSCL short forms are strongly invariant across sex, and we found evidence fo…
Classification of pumpkin seed oils according to their species and genetic variety by attenuated total reflection Fourier-transform infrared spectros…
2011
Attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR), followed by multivariate treatment of the spectral data, was used to classify seed oils of the genus Cucurbita (pumpkins) according to their species as C. maxima, C. pepo, and C. moschata. Also, C. moschata seed oils were classified according to their genetic variety as RG, Inivit C-88, and Inivit C-2000. Up to 23 wavelength regions were selected on the spectra, each region corresponding to a peak or shoulder. The normalized absorbance peak areas within these regions were used as predictors. Using linear discriminant analysis (LDA), an excellent resolution among all categories concerning both Cucurbita species a…
Shortcut to Adiabaticity in the Lipkin-Meshkov-Glick Model
2015
We study transitionless quantum driving in an infinite-range many-body system described by the Lipkin-Meshkov-Glick model. Despite the correlation length being always infinite the closing of the gap at the critical point makes the driving Hamiltonian of increasing complexity also in this case. To this aim we develop a hybrid strategy combining shortcut to adiabaticity and optimal control that allows us to achieve remarkably good performance in suppressing the defect production across the phase transition.
Physicochemical characteristics and phenotypic diversity of sicilian winter pumpkin (Cucurbita maxima) populations
2017
Six pumpkin genotypes (G1, G2, G3, G4, G5 and G6) were evaluated for their morphological, agronomical and physico-chemical properties under ecological conditions of Sicily (Italy). Considering the agronomical, morphological and physicochemical data including fiber, humidity, pH, total acidity, soluble solids, carotenoids, phenolic and ascorbic acid content, it was possible to differentiate among genotypes. The morphological analysis showed that the pumpkin genotypes did not have a homogenous morphology and present a large physico-chemical characteristic variability. Furthermore, high contents of carotenoids and dietary fiber, soluble solids, phenolic and ascorbic acid were observed with the…
Bioaccessibility Study of Aflatoxin B1 and Ochratoxin A in Bread Enriched with Fermented Milk Whey and/or Pumpkin
2021
The presence of mycotoxins in cereals and cereal products remains a significant issue. The use of natural ingredients such as pumpkin and whey, which contain bioactive compounds, could be a strategy to reduce the use of conventional chemical preservatives. The aim of the present work was to study the bioaccessibility of aflatoxin B1 (AFB1) and ochratoxin (OTA) in bread, as well as to evaluate the effect of milk whey (with and without lactic acid bacteria fermentation) and pumpkin on reducing mycotoxins bioaccessibility. Different bread typologies were prepared and subjected to an in vitro digestion model. Gastric and intestinal extracts were analyzed by HPLC–MS/qTOF and mycotoxins bio…
Time and heat for sexual reproduction: comparing the phenology of Chara hispida of two populations at different latitudes
2017
Abstract Geographical location affects the main ecological factors driving the timing of plants’ life events. In addition, studying phenology is the simplest procedure to track current global warming and its effects on the success and survival of different populations of the same species. Little is known about the effect of water temperature and its corresponding accumulated heat on charophytes’ phenology. We compared differences in water temperature and sexual reproductive phenology of Chara hispida in two ponds of two countries located at different latitudes (Spain and Switzerland) over the same year. We estimated the accumulated heat required to develop from one phenophase to another (un…
Przegląd metod magazynowania energii w kontekście rozwoju technologii OZE
2017
Rozwój technologii magazynowania energii jest kluczowy dla rozwoju wykorzystania odnawialnych źródeł energii. Wynika to przede wszystkim z nierównomiernej w czasie podaży tej energii, której produkcja dla większości technologii związana jest z warunkami atmosferycznymi. Poza nielicznymi wyjątkami, czas w którym są najlepsze warunki do pozyskania energii odnawialnej nie pokrywa się z czasem, kiedy zapotrzebowanie na energię jest największe. Fluktuacje zarówno podaży tej energii jak i zapotrzebowania na nią mogą mieć charakter krótko, średnio lub długookresowy. Jest to duże ograniczenie, które można w pewnym zakresie można rozwiązać poprzez magazynowanie energii, w różnych jej formach: energi…
Fourfold Increase in Pumpkin Yield in Response to Low-Dosage Root Zone Application of Urine-Enhanced Biochar to a Fertile Tropical Soil
2015
A widely abundant and invasive forest shrub, Eupatorium adenophorum, was pyrolyzed in a cost-efficient flame curtain kiln to produce biochar. The resulting biochar fulfilled all the requirements for premium quality, according to the European Biochar Certificate. The biochar was either applied alone or mixed with fresh cow urine (1:1 volume) to test its capacity to serve as slow release fertilizer in a pumpkin field trial in Nepal. Treatments included cow-manure compost combined with (i) urine-only; (ii) biochar-only or (iii) urine-loaded biochar. All materials were applied directly to the root zone at a biochar dry matter content of 750 kg·ha−1 before seeding. The urine-biochar treatment le…
Räpin terapeuttinen käyttö : ohjaaminen ja inhimillisen kasvun tukeminen
2017
Pro gradu-työssäni nostetaan esiin räpin inhimillistä kasvua tukevia elementtejä sekä määritellään rap-terapiaa aiemmin tuotettujen artikkelien pohjalta. Kyseessä on kirjallisuuskatsaus, jota tukee paikoitellen oma työkokemukseni räppityöpaja- sekä kirjallisuusterapiaohjaajana ja räppärinä. Olen aloittanut omakohtaisen kirjoittamisen yläkouluiässä räpin avulla ja palannut aktiiviseksi räptoimijaksi yliopisto-opintojen myötä niin, että pidin ensimmäisen luokiotasoisen räpkirjoittamisen verkkokurssin syksyllä 2012. Tänä päivänä ohjaan viikossa keskimäärin kymmen tuntia räptyöpajoja erilaisille ryhmille ja teen omaa räppiä noin 20 tuntia viikossa. Kokemuspohjaisen aineiston lisäksi käsittelyss…