Search results for "Neet"

Triplet-State Position and Crystal-Field Tuning in Opto‐Magnetic Lanthanide Complexes : Two Sides of the Same Coin

2019

Lanthanide complex‐based luminescence thermometry and single‐molecule magnetism are two effervescent research fields, owing to the great promise they hold from an application standpoint. The high thermal sensitivity achievable, their contactless nature, along with sub‐micrometric spatial resolution make these luminescent thermometers appealing for accurate temperature probing in miniaturized electronics. To that end, single‐molecule magnets (SMMs) are expected to revolutionize the field of spintronics, thanks to the improvements made in terms of their working temperature – now surpassing that of liquid nitrogen – and manipulation of their spin state. Hence, the combination of such opto‐magn…

Polarization of the spontaneous magnetic field and magnetic fluctuations in s+is anisotropic multiband superconductors

2018

We show that multiband superconductors with broken time-reversal symmetry can produce spontaneous currents and magnetic fields in response to the local variations of pairing constants. Considering the iron pnictide superconductor Ba1−xKxFe2As2 as an example we demonstrate that both the point-group symmetric s+is state and the C4-symmetry-breaking s+id states produce, in general, the same magnitudes of spontaneous magnetic fields. In the s+is state these fields are polarized mainly on an ab crystal plane, whereas in the s+id state their ab-plane and c-axis components are of the same order. The same is true for the random magnetic fields which are produced by the order parameter fluctuations …

Experimental evidence on microwave induced electron losses from ECRIS plasma

2018

The balance between warm and hot (>1 keV) electron density and their losses from the magnetic confinement system of an Electron Cyclotron Resonance Ion Source (ECRIS) plasma is considered to be one of the main factors determining the rate of the high charge state ion production. One of the key loss channels for heated electrons is thought to be induced by the injected microwaves. While this loss mechanism, referred to as rf-induced pitch angle scattering, has been studied theoretically and with computational tools, direct experimental evidence of its significance in minimum-B ECRIS plasmas remains limited. In this work, experimental evidence of microwave induced electron losses in the axial…

Identification of proprioceptive thalamocortical tracts in children: comparison of fMRI, MEG, and manual seeding of probabilistic tractography

2022

Publisher Copyright: © The Author(s) 2022. Published by Oxford University Press. Studying white matter connections with tractography is a promising approach to understand the development of different brain processes, such as proprioception. An emerging method is to use functional brain imaging to select the cortical seed points for tractography, which is considered to improve the functional relevance and validity of the studied connections. However, it is unknown whether different functional seeding methods affect the spatial and microstructural properties of the given white matter connection. Here, we compared functional magnetic resonance imaging, magnetoencephalography, and manual seedin…

Suurten vähittäiskaupan ketjujen suoramainonta ja muu printtimainonta

1999

Lisäaineiden vaikutus maissin käsittelyyn biokaasuprosessissa

2012

Biokaasun tuotanto energiakasveista on lupaava menetelmä uusiutuvan energian tuottami-seen. Yksipuolinen yhden kasvilajikkeen käyttö biokaasulaitoksen syötteenä saattaa kui-tenkin aiheuttaa hivenainepuutoksia biokaasureaktorissa. Hivenainepuutos häiritsee reakto-rin toimintaa erityisesti korkeilla kuormituksilla ja saattaa alentaa biokaasun tuotantoa. Hivenaineet ovat prosessille tärkeitä, koska ne toimivat osana metanogeenisten arkkien metaboliaa ja toimivat osana metanogeneesissä tärkeiden entsyymien kofaktoreita. Tässä työssä tutkittiin kahden lisäaineen (A1 ja A2) vaikutusta kolmen pelkästään maissilla syötetyn täyssekoitteisen puolijatkuvatoimisen täyssekoitteisen reaktorin (CSTR) toim…

Kasvatetun siian (Coregonus lavaretus) ja kirjolohen (Oncorhynchus mykiss) maksa elintarvikkeena

2020

Modeling optical constants from the absorption of organic thin films using a modified Lorentz oscillator model

2022

Optical constants of organic thin films can be evaluated using the Lorentz oscillator model (LOM) which fails to fit inhomogeneously broadened absorption of highly concentrated molecular films. In modified LOM (MLOM), the inhomogeneous broadening is implemented through a frequency-dependent adjustable broadening function. In this work, we evaluate the optical constants of rhodamine 6G doped poly-vinyl alcohol thin films with varying doping concentration (including also extensively high concentrations) using MLOM, which outperforms LOM by showing a better agreement with the experimental results. Our proposed method provides a way to accurately determine optical constants of isotropic organic…

Development and use of computational tools for modelling negative hydrogen ion source extraction systems

2013

On stochastic modelling and reliability of systems with moving cracked material

2015

In many industrial processes, such as printing paper, a material travels through a series of rollers unsupported and under longitudinal tension. The value of the tension has an important role in the system behaviour, such as fracture and me- chanical stability. This thesis develops stochastic models for a system in which an elastic, isotropic cracked material travels through a series of spans and studies the probabilities of fracture and instability of the material. The models focus on describing tension variations and initial cracks in the material. Time-dependent tension fluctuations are modelled by the stationary Ornstein-Uhlenbeck process, and the occurrence and lengths of the cracks are…