Search results for "SELE"
showing 10 items of 4721 documents
A Novel Halogen Bond Acceptor : 1-(4-Pyridyl)-4-Thiopyridine (PTP) Zwitterion
2020
Sulfur is a widely used halogen bond (XB) acceptor, but only a limited number of neutral XB acceptors with bifurcated sp3-S sites have been reported. In this work a new bidentate XB acceptor, 1-(4-pyridyl)-4-thiopyridine (PTP), which combines sp3-S and sp2-N acceptor sites, is introduced. Three halogen bonded cocrystals were obtained by using 1,4-diiodobenzene (DIB), 1,4-diiodotetrafluorobenzene (DIFB), and iodopentafluorobenzene (IPFB) as XB donors and PTP as acceptor. The structures of the cocrystals showed some XB selectivity between the S and N donors in PTP. However, the limited contribution of XB to the overall molecular packing in these three cocrystals and the results from DSC measu…
Selective Synthesis of Z -Silyl Enol Ethers via Ni-Catalyzed Remote Functionalization of Ketones
2021
Journal of the American Chemical Society : JACS 143(22), 8375-8380 (2021). doi:10.1021/jacs.1c01797
Primo Levi: Aselepo
2019
Kirja-arvostelu teoksesta Primo Levi: Aselepo. Suom. Irma Koistinen, italiankielinen I painos 1963, Like 2019, 213 s. nonPeerReviewed
Unstable feature relevance in classification tasks
2011
Bilingvisms un vizuālās meklēšanas uzdevums
2020
Maģistra darbs “Bilingvisms un vizuālās meklēšanas uzdevums” ir uzrakstīts latviešu valodā uz 46 lapām, satur 5 attēlus, 2 tabulas un 81 atsauces uz literatūras avotiem. Pamatojoties uz jaunāko pētījumu secinājumiem, bilingvāļu kognitīvo priekšrocību iemesls ir labāk kontrolēta vizuālā selektīvā uzmanība. Šī darba mērķis bija to pārbaudīt, izmantojot vizuālās meklēšanas uzdevumus. 30 dalībnieki tika iedalīti 3 grupās: monolingvāļi (10 latvieši un 10 krievi) un 10 bilingvāļi. Dalībnieki veica pazīmju un pazīmju kopuma meklēšanas uzdevumus, kuros jāatrod mērķis – Landolt kvadrāts, starp distraktoriem – Landolt kvadrātiem, kuri atšķīrās pēc krāsas un/vai atvēruma. Tika analizēts reakcijas laik…
Ģinšu un sugu krustošanas mēģinājumi krustziežu dzimtā (Cruciferae)
2020
Raksts satur informāciju par latviešu botāniķa Aleksandra Zāmeļa (1897 - 1943) doktora disertāciju "Ģinšu un sugu krustošanas mēģinājumi krustziežu dzimtā (Cruciferae)" (1942), kas glabājas Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju krājumā.
Overflater og linjer i felt og flater : refleksjoner rundt fenomenet ”bruk” i kunsthåndverksfeltet og i skapende arbeid med porselen
2016
Masteroppgave kunstfag- Universitetet i Agder, 2016
Investigation about selective harmonic elimination in unbalanced multilevel inverters
2022
In this paper 5 and 7 levels cascaded H-bridges inverters are considered, feeding by unequal dc voltage sources. The effect of these unbalancing operation is examined concerning harmonic analysis and total harmonic distortion of the output voltages. The system of equations, obtained by the expansion in the Fourier series of phase output voltage, is solved by applying a method of graphic solution that allows obtaining the switching angles able to eliminate the lower order harmonics.
Sourdough and cereal-based foods: traditional and innovative products
2017
Cereals represent the main crop of the five continents and contribute greatly to the diet of several populations. Cereals often undergo a fermentation before eating. This process is fundamental to confer high sensory quality, as well as to preserve and enhance the nutritional and safety aspects of the resulting products. Fermented cereal based foods are complex microbial ecosystems, mainly represented by lactic acid bacteria and yeasts. Among these products, sourdough is worldwide applied to produce breads. Sourdough technology is also used to improve the final characteristics of fortified and gluten–free breads. This chapter focuses on the use of cereals to produce the most relevant fermen…
UPDATE ON THE SICILIAN STRAWBERRY BREEDING PROJECT
2014
The strawberry industry in Sicily differs from that of Italy’s other southern regions since the particularly warm winter weather results in earlier fruit ripening. Cultivar choice is thus of key importance for the success of Sicily’s strawberry industry. The old cultivar Tudla®Milsei has recently been replaced by cultivars ‘Florida Fortuna’, ‘Florida Festival’, ‘Sabrosa®Candonga’, ‘Naiad®Civl35’ and ‘Nora’ developed by both public and private breeding programs in Florida, Spain and Italy. The strawberry breeding program in Sicily started about 20 years ago in an effort to develop new cultivars well adapted to an area of very low winter chilling, with requirements featuring superior performa…