Search results for " Correlation"
showing 10 items of 1380 documents
Characterization of Micelles of Polyisobutylene-block-poly(methacrylic acid) in Aqueous Medium
2000
Four amphiphilic block copolymers polyisobutylene-block-poly(methacrylic acid) (IBm-MAAn; m = 70−134, n = 52−228) were synthesized and transferred into aqueous medium at pH 10−12. Their structure in solution was characterized by fluorescence correlation spectroscopy (FCS), static and dynamic light scattering (SLS, DLS), analytical ultracentrifuge (AUC), and by transmission electron microscopy (TEM) with freeze-fracturing and staining techniques. DLS data, AUC sedimentation traces, and TEM images indicate at least two different kinds of particles. TEM shows spherical micelles; however, especially for polymers with larger hydrophobic blocks, additional particles are observed. FCS shows extrem…
Multivariate correlation between13C and31P NMR spectral data on dissolved lignin and the combustion properties of kraft black liquor
1999
ChemInform Abstract: A Theoretical Determination of the Dissociation Energy of the Nitric Oxide Dimer.
2010
Multi-reference CI methods have been applied to determine the dissociation energy and structure of thecis-N2O2 molecule. The convergence of the theoretical result has been checked with respect to a systematic expansion of the one-electron basis set and the multi-reference CI wave function. The best calculated value, 13.8 kJ/mol, is in agreement with the experimental value, 12.2 kJ/mol. It has been obtained with an extended ANO-type basis set [6s5p3d2f], including the effect of the basis set superposition error (BSSE) in the geometry optimization, and additional effects, such as the electron correlation of core electrons and relativistic corrections, using the average coupled pair functional…
The bleaching efficacy of carbamide peroxide gels containing potassium nitrate desensitizer
2020
Background To evaluate the bleaching efficacy of at-home carbamide peroxide (CP) gels in two concentrations, containing or not a desensitizing agent. Material and methods Forty incisors were divided into four groups (n=10), according to gel concentrations (10% or 22%), and presence or not of 3% potassium nitrate in the gel. A thin layer of gel was applied to the buccal surface of each tooth for 2h/day for 4 weeks. Bleaching efficacy was measured using a spectrophotometer, and ∆E*ab, ∆E00 and ∆WID were calculated. Measurements were performed at baseline, 7, 14, 21, 28, and 35 days following the first gel application. Data were analyzed by two-way RM-ANOVA and Tukey's test (α=0.05). Results R…
Multiscale variation in drought controlled historical forest fire activity in the boreal forests of eastern Fennoscandia
2017
Forest fires are a key disturbance in boreal forests, and characteristics of fire regimes are among the most important factors explaining the variation in forest structure and species composition. The occurrence of fire is connected with climate, but earlier, mostly local-scale studies in the northern European boreal forests have provided little insight into fire-climate relationship before the modern fire suppression period. Here, we compiled annually resolved fire history, temperature, and precipitation reconstructions from eastern Fennoscandia from the mid-16th century to the end of the 19th century, a period of strong human influence on fires. We used synchrony of fires over the network…
Elliptic flow of identified hadrons in Pb-Pb collisions at √sNN = 2.76 TeV
2015
The elliptic flow coefficient (v2) of identified particles in Pb-Pb collisions at √ sNN = 2.76 TeV was measured with the ALICE detector at the Large Hadron Collider (LHC). The results were obtained with the Scalar Product method, a two-particle correlation technique, using a pseudo-rapidity gap of |∆η| > 0.9 between the identified hadron under study and the reference particles. The v2 is reported for π ±, K±, K0 S , p+p, φ, Λ+Λ, Ξ −+Ξ + and Ω−+Ω + in several collision centralities. In the low transverse momentum (pT) region, pT 3 GeV/c. peerReviewed
Anisotropic flow and flow fluctuations of identified hadrons in Pb–Pb collisions at √sNN = 5.02 TeV
2023
The new version of the pictorial scale of Perceived Movement Skill Competence in Spanish children: Evidence of validity and reliability. [La nueva ve…
2019
The purpose of this study was to i) examine reliability and construct validity of the pictorial scale of Perceived Movement Skill Competence (PMSC) aligned to the third version of the Test of Gross Motor Development (TGMD-3) in a sample of Spanish children; and to ii) analyse the validity of the PMSC and children’s perceived motor competence (MC) according to gender. A convenience sample of 361 children (55.7% boys) between 4 and 11 years-old participated. The pictorial scale of PMSC (19 items) was administered (a random subsample repeated the PMSC twice). Test-retest reliability using Intraclass Correlation Coefficients and construct validity using a Bayesian Structural Equation Modeling a…
Radzenes biezuma un acs refrakcijas korelācija bērniem.
2020
Maģistra darbs ir uzrakstīts 46 lappusēm angļu valodā. Tas satur 19 attēlus, 9 tabulas, un 62 informācijas avotus. Šī darba mērķis ir izpētīt korelāciju starp radzenes biezumu un acs refrakciju 5-12 gadus veciem bērniem. Radzenes biezuma kartes un keratometrija tika mērīta, izmantojot Scheimpflug attēl veidošanas sistēmu Schwind Sirius. Keratometrija un refrakcija tika mērīta, izmantojot autokeratorefraktotonometru Topcon TRK-2P cikloplēģijā. Katram parametram tika veikti trīs mērījumi turpmākai analīzei. Šī pētījuma nolūkos tika analizētas 196 acis. Dalībniekiem ar hipermetropiju un hipermetropo astigmātismu novēroja lielākas radzenes biezuma vērtības centrā un radzenes perifērijā, atšķirī…
The effective cross section for double parton scattering within a holographic AdS/QCD approach
2017
A first attempt to apply the AdS/QCD framework for a bottom-up approach to the evaluation of the effective cross section for double parton scattering in proton-proton collisions is presented. The main goal is the analytic evaluation of the dependence of the effective cross section on the longitudinal momenta of the involved partons, obtained within the holographic Soft-Wall model. If measured in high-energy processes at hadron colliders, this momentum dependence could open a new window on 2-parton correlations in a proton.