Search results for "results"
showing 10 items of 2214 documents
Determination of sorption properties of heavy metals in various biosorbents
2018
Various techniques of determination of properties of physicochemical processes of heavy metal sorption in biosorbents were analysed. The methods of preparing and storing samples, conditions of experiment performance, as well as the methods of data interpretation were discussed. Two procedures of study were analysed: (1) in the static system of biosorbent-solution contact and (2) in the system of dynamic flow of solution. Copper cation sorption was studied. The effect of consecutive stages of the study on the quality of final results was shown. A high degree of uncertainty of the sorption capacity assessment was reported, which was dependent on the manner of conducting the study. The applica…
Multiplicity results for asymmetric boundary value problems with indefinite weights
2004
We prove existence and multiplicity of solutions, with prescribed nodal properties, to a boundary value problem of the formu″+f(t,u)=0,u(0)=u(T)=0. The nonlinearity is supposed to satisfy asymmetric, asymptotically linear assumptions involving indefinite weights. We first study some auxiliary half-linear, two-weighted problems for which an eigenvalue theory holds. Multiplicity is ensured by assumptions expressed in terms of weighted eigenvalues. The proof is developed in the framework of topological methods and is based on some relations between rotation numbers and weighted eigenvalues.
Tulevaisuuden avaintaidot puntarissa: Kahdeksannen luokan oppilaiden matematiikan ja luonnontieteiden osaaminen: kansainvälinen TIMSS 2019 -tutkimus …
2020
TIMSS (Trends in International Mathematics and Science Study) on kansainvälinen koulutuksen arvioinnin tutkimusohjelma, jossa joka neljäs vuosi arvioidaan neljäsja kahdeksasluokkalaisten oppilaiden matematiikan ja luonnontieteiden osaamista. Kansainvälinen arviointijärjestö IEA (International Association for the Evaluation of Educational Achievement) on johtanut vertailevan arvioinnin tutkimuksia jo 1960-luvulta lähtien. TIMSStutkimusohjelma alkoi vuonna 1995, ja Suomi osallistui tähän tutkimukseen ensimmäisen kerran vuonna 1999. Vuoden 2011 tutkimuskerralla Suomesta arviointiin osallistuivat sekä neljäs- että kahdeksasluokkalaiset oppilaat, mutta viimekertaisessa TIMSS 2015 -arvioinnissa m…
Perustaidoista vauhtia koulutielle: Neljännen luokan oppilaiden matematiikan ja luonnontieteiden osaaminen: kansainvälinen TIMSS 2019 -tutkimus Suome…
2020
TIMSS (Trends in International Mathematics and Science Study) on kansainvälinen koulutuksen arvioinnin tutkimusohjelma, jossa joka neljäs vuosi arvioidaan neljäs- ja kahdeksasluokkalaisten oppilaiden matematiikan ja luonnontieteiden osaamista. Kansainvälinen arviointijärjestö IEA (International Association for the Evaluation of Educational Achievement) on johtanut vertailevan arvioinnin tutkimuksia jo 1960-luvulta lähtien. TIMSS-tutkimusohjelma alkoi vuonna 1995, ja Suomi osallistui tähän tutkimukseen ensimmäisen kerran vuonna 1999. Vuoden 2011 tutkimuskerralla Suomesta arviointiin osallistuivat sekä neljäs- että kahdeksasluokkalaiset oppilaat, mutta edellisen kierroksen TIMSS 2015 -arvioin…
Search for pair production of first or second generation leptoquarks in proton-proton collisions at sqrt(s)=7 TeV using the ATLAS detector at the LHC
2011
This paper describes searches for the pair production of first or second generation scalar leptoquarks using 35 pb−1 of proton-proton collision data recorded by the ATLAS detector at √s=7 TeV. Leptoquarks are searched in events with two oppositely-charged muons or electrons and at least two jets, and in events with one muon or electron, missing transverse momentum and at least two jets. After event selection, the observed yields are consistent with the predicted backgrounds. Leptoquark production is excluded at the 95% CL for masses MLQ<376 (319) GeV and MLQ<422 (362) GeV for first and second generation scalar leptoquarks, respectively, when assuming the branching fraction of a leptoquark…
Seasonal Modulation of the $^7$Be Solar Neutrino Rate in Borexino
2017
We detected the seasonal modulation of the $^7$Be neutrino interaction rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. The period, amplitude, and phase of the observed time evolution of the signal are consistent with its solar origin, and the absence of an annual modulation is rejected at 99.99\% C.L. The data are analyzed using three methods: the sinusoidal fit, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.
Rosenbluth separation of the $\pi^0$ Electroproduction Cross Section off the Neutron
2017
We report the first longitudinal/transverse separation of the deeply virtual exclusive $\pi^0$ electroproduction cross section off the neutron and coherent deuteron. The corresponding four structure functions $d\sigma_L/dt$, $d\sigma_T/dt$, $d\sigma_{LT}/dt$ and $d\sigma_{TT}/dt$ are extracted as a function of the momentum transfer to the recoil system at $Q^2$=1.75 GeV$^2$ and $x_B$=0.36. The $ed \to ed\pi^0$ cross sections are found compatible with the small values expected from theoretical models. The $en \to en\pi^0$ cross sections show a dominance from the response to transversely polarized photons, and are in good agreement with calculations based on the transversity GPDs of the nucle…
Early sudden gains in an acceptance and values-based intervention: Effects on treatment outcome for depression and psychological flexibility
2018
Abstract Objective The aim of this study was to explore early temporal patterns of change in a treatment delivered by novice therapists. We examined if early sudden gains (ESGs) in a six-session acceptance and values-based intervention would produce superior treatment outcomes when compared to slower improvements. Method The temporal patterns of change of 56 clients diagnosed with depression were analyzed. ESGs were defined as reaching the status of recovered or improved in the Reliable Change Index (RCI) (Jacobson & Truax (1991)) classification after two sessions. The group with ESGs was then compared to participants without ESGs for differences in treatment outcome on measures of symptoma…
Long-term stability of early sudden gains in an acceptance and values-based intervention
2019
Though previous research has extensively reported that sudden gains are associated with superior treatment results, research on the long-term effects and stability of sudden gains is not as consistent. The current study explored the long-term stability of early sudden gains (ESGs) observed in a brief acceptance and values-based intervention for depression provided by novice therapists. The participants were 56 volunteers diagnosed with major depressive disorder. Among the participants, 23% experienced ESGs, i.e. they reached the status of improved or recovered in the Reliable Change Index (RCI; Jacobson & Truax, 1991) classification after only two sessions. The current study examined the le…
Dy159 Electron-Capture: A New Candidate for Neutrino Mass Determination
2021
International audience; The ground state to ground state electron-capture Q value of Dy159 (3/2-) has been measured directly using the double Penning trap mass spectrometer JYFLTRAP. A value of 364.73(19) keV was obtained from a measurement of the cyclotron frequency ratio of the decay parent Dy159 and the decay daughter Tb159 ions using the novel phase-imaging ion-cyclotron resonance technique. The Q values for allowed Gamow-Teller transition to 5/2- and the third-forbidden unique transition to 11/2+ state with excitation energies of 363.5449(14) keV and 362.050(40) keV in Tb159 were determined to be 1.18(19) keV and 2.68(19) keV, respectively. The high-precision Q value of transition 3/2-…