Search results for "PARITY"
showing 10 items of 513 documents
β and γ bands in N = 88, 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory…
2019
A comprehensive systematic study is made for the collective β and γ bands in even-even isotopes with neutron numbers N=88 to 92 and proton numbers Z=62(Sm) to 70 (Yb). Data, including excitation energies, B(E0) and B(E2) values, and branching ratios from previously published experiments are collated with new data presented for the first time in this study. The experimental data are compared to calculations using a five-dimensional collective Hamiltonian (5DCH) based on the covariant density functional theory (CDFT). A realistic potential in the quadrupole shape parameters V(β,γ) is determined from potential energy surfaces (PES) calculated using the CDFT. The parameters of the 5DCH are fixe…
Excited states in 87Br populated in β decay of 87Se
2019
Excited levels in 87Br, populated in β decay of 87Se, have been studied by means of γ-ray spectroscopy using an array of broad energy Ge detectors. 87Se nuclei were produced by irradiating a natural Th target with 25-MeV protons. Fission products were extracted from the target chamber using the IGISOL technique, then separated on a dipole magnet and Penning trap (JYFLTRAP) setup. The scheme of excited levels of 87Br has been significantly extended. 114 new transitions and 51 new levels were established. β feedings and log(ft) values of levels were determined. The upper limit for β feeding to the ground state of 87Br was determined to be 23(5)%. Ground state spin and parity 5/2− was confirme…
In-beam γ-ray and electron spectroscopy of Md249,251
2020
The odd-Z 251Md nucleus was studied using combined γ-ray and conversion-electron in-beam spectroscopy. Besides the previously observed rotational band based on the [521]1/2− configuration, another rotational structure has been identified using γ−γ coincidences. The use of electron spectroscopy allowed the rotational bands to be observed over a larger rotational frequency range. Using the transition intensities that depend on the gyromagnetic factor, a [514]7/2− single-particle configuration has been inferred for this band, i.e., the ground-state band. A physical background that dominates the electron spectrum with an intensity of ≃60% was well reproduced by simulating a set of unresolved ex…
Intra-individual variability in TSH levels of healthy women during the first half of pregnancy
2017
TSH is the parameter most widely accepted to assess thyroid function, especially in pregnant women. The aim of this current study was to analyze intra-individual changes in TSH during the first half of pregnancy in women with TSH levels higher than 2.5mIU/L in early pregnancy.An observational, prospective study was conducted on 243 healthy pregnant women in the first trimester of pregnancy. Thyroid function was assessed by testing TSH and free T4 levels. A subgroup of women with TSH levels2.5mIU/L underwent additional tests (TSH, free T4, peroxidase antibodies). Information on dietary iodine intake and/or iodine supplements was also recorded.Mean TSH level was 1.89mIU/L (range 0.024-6.48mIU…
Jauna stereoredzes testa izstrāde krustotās un nekrustotās disparitātes novērtēšanai
2017
Darbs uzrakstīts angļu valodā uz 49 lappusēm. Tas satur 47 attēlus, 3 tabulas un atsauces uz 27 literatūras avotiem. Darba mērķis bija izstrādāt jaunu datorizētu stereoredzes testu krustotās un nekrustotās disparitātes novērtēšanai. Lokālās un globālās stereoredzes sliekšņi tika novērtēti pielietojot psihofizikālo trepju metodi. Pētījuma dalībnieku uzdevums bija atpazīt telpiskus attēlus. Stimuliem tika izvēlēti dažādi ekspozīcijas laiki – 5 sekundes (ilgais laiks), 550 ms un 250 ms (īsie laiki). Stereoredzes novērtēšanai papildus tika pielietoti tradicionālie stereotesti – TNO, Titmus tests. Pētījumā piedalījās 37 dalībnieki vecumā no 16 līdz 42 gadiem. Rezultāti tika salīdzināti ņemot vēr…
Krustotās un nekrustotās disparitātes stereoslieksnis dažādos vecumos
2020
Maģistra darbs uzrakstīts uz 75 lappusēm, satur 40 attēlus, 10 tabulas un darbā ir atsauces uz 100 literatūras avotiem. Maģistra darba mērķis bija novērtēt krustotās un nekrustotās disparitātes atšķirības dažāda vecuma cilvēkiem. Pētījuma dalībnieki tika iedalīti četrās vecuma grupās. Pētījumā piedalījās 61 dalībnieks (vecumā no 19 līdz 78 gadiem). Pētījuma dalībniekiem nebija acu slimības, redzes asums bija vismaz 0,0 vai labāks (LogMAR sistēmā). Stereoredzes noteikšanai tika izmantots digitālais izliedēto punktu globālā principa stereotests, kopā ar pakāpjveida psihofizikālo metodi. Pētījums parādīja, ka nekrustotās disparitātes stimulu sliekšņi vienmēr bija augstāki, salīdzinot ar krusto…
The fine structure of colleterial glands in two cockroaches and three termites, including a detailed study of Cryptocercus punctulatus (Blattaria, Cr…
2007
1873-5495 (Electronic) Journal Article Research Support, U.S. Gov't, Non-P.H.S.; The colleterial glands of insects are organs associated with the female genital apparatus. In cockroaches, these glands produce secretions that cover two parallel rows of eggs during oviposition, and in oviparous species, these secretions become the tanned, sculpted, rigid outer casing of the ootheca. The goal of this study was to compare the gross anatomy of the colleterial glands and the ultrastructure of their component tubules in the phylogenetically significant genera Cryptocercus (Blattaria) and Mastotermes (Isoptera). Recent studies indicate that cockroaches in the genus Cryptocercus are the sister group…
The Analysis of the Digital Economy and Society Index in the EU
2019
Abstract The paper analyzes the Digital Economy and Society Index (DESI), which characterizes the development of digital economy. Based on the data of 28 European countries for 2013–2018, using the panel regression, we studied the influence of the consumption index growth by the purchasing power parity and unemployment among the active population on the structural units of DESI. It is shown that a 1% increase in the consumption index results in about 0.2 increase in the DESI, and an increase in unemployment by 1% leads to about 0.2 DESI decline. It is also shown that the 98% value of DESI is actually determined by its previous trends, and therefore it is impossible to increase this index ra…
Spins and magnetic moments of 58;60;62;64Mn ground states and isomers
2015
The odd-odd 54;56;58;60;62;64Mn isotopes (Z = 25) were studied using bunched-beam collinear laser spectroscopy at ISOLDE, CERN. From the measured hyperfine spectra the spins and magnetic moments of Mn isotopes up to N = 39 were extracted. The previous tentative ground state spin assignments of 58;60;62;64Mn are now firmly determined to be I = 1 along with an I = 4 assignment for the isomeric states in 58;60;62Mn. The I = 1 magnetic moments show a decreasing trend with increasing neutron number while the I = 4 moments remain quite constant between N = 33 and N = 37. The results are compared to large-scale shell-model calculations using the GXPF1A and LNPS effective interactions. The excellen…
Lapsen emotionaalisten tarpeiden kohtaaminen päiväkodin työpari- ja tiimityössä
2010
Päivähoidossa toiminnan on lähdettävä valtakunnallisten linjausten mukaan lapsen tarpeista. Tähän tutkimukseen valitsin emotionaalisista tarpeista lapsen kiinnittymisen ja autonomian. Tutkimuksen tarkoituksena oli selvittää, kuinka erilaiset organisoitumisen muodot (perinteinen kolmen aikuisen tiimi tai ryhmä, omahoitajatyö ja työparina työskentely) vastasivat tutkimuskenttänä toimineen päiväkodin henkilökunnan kokemusten mukaan edellä mainittuihin tarpeisiin. Tutkimus oli luonteeltaan laadullinen, puolistrukturoitu haastattelu. Haastateltavat saivat kertoa kokemuksiaan ja merkityksiä tiimityöstä, omahoitajuudesta sekä työparin kanssa työskentelystä. Jokaisella oli kokemusta näistä kaikista…