Search results for "ddc:"
showing 10 items of 3080 documents
Quantifying the Covalent Functionalization of Black Phosphorus
2020
Abstract A straightforward quantification method to consistently determine the overall functionalization degree of covalently modified two‐dimensional (2D) black phosphorus (BP) by Raman spectroscopy has been carried out. Indeed, the successful reductive methylation of the BP lattice using sodium intercalation compounds and exhibiting different functionalization degrees has been demonstrated by 31P‐magic angle spinning (MAS) NMR spectroscopy. Furthermore, the correlation of 31P‐MAS NMR spectroscopy and statistical Raman spectroscopy (SRS) revealed the first method to determine the functionalization degree of BP solely by evaluating the intensities of distinct peaks in the Raman spectra of t…
Wannier90 as a community code: new features and applications
2019
Wannier90 is an open-source computer program for calculating maximally-localised Wannier functions (MLWFs) from a set of Bloch states. It is interfaced to many widely used electronic-structure codes thanks to its independence from the basis sets representing these Bloch states. In the past few years the development of Wannier90 has transitioned to a community-driven model; this has resulted in a number of new developments that have been recently released in Wannier90 v3.0. In this article we describe these new functionalities, that include the implementation of new features for wannierisation and disentanglement (symmetry-adapted Wannier functions, selectively-localised Wannier functions, s…
Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
2014
We present an update of the Binoth Les Houches Accord (BLHA) to standardise the interface between Monte Carlo programs and codes providing one-loop matrix elements.
Induction of regulatory Tr1 cells and inhibition of TH17 cells by IL-27
2011
Accumulating evidence indicates that IL-27, a member of the IL-12 family of cytokines, alleviates the severity of autoimmune diseases in both mice and men. The IL-27-induced activation of signal transducer and activator of transcription (Stat)1 and Stat3 promotes the generation of IL-10- producing type 1 regulatory T (Tr1) cells that inhibit effector T cells. In addition, IL-27 also suppresses the development of pathogenic IL-17-producing CD4(+) T cells (T(H)17) cells suggesting that pharmacological manipulations of IL-27 signaling pathway could be exploited therapeutically in regulating tissue inflammation. Here, we review how IL-27 controls inflammation through the regulation of Tr1 and T…
Integrating psychological and neurobiological considerations regarding the development and maintenance of specific Internet-use disorders: An Interac…
2016
Within the last two decades, many studies have addressed the clinical phenomenon of Internet-use disorders, with a particular focus on Internet-gaming disorder. Based on previous theoretical considerations and empirical findings, we suggest an Interaction of Person-Affect-Cognition-Execution (I-PACE) model of specific Internet-use disorders. The I-PACE model is a theoretical framework for the processes underlying the development and maintenance of an addictive use of certain Internet applications or sites promoting gaming, gambling, pornography viewing, shopping, or communication. The model is composed as a process model. Specific Internet-use disorders are considered to be the consequence …
Purchasing Behaviour of Polish Consumers in the Internet
2017
In recent years we may observe the growing importance of the Internet in the lives of consumers. As the data from Central Statistical Office (GUS) shows, in 2015 approximately 75.8% of Polish households had access to the Internet. The value of e-commerce is estimated at PLN 27 billion. 54% of Internet users buy in Polish e-shops and 13% in foreign internet shops. The threat of violations of consumer rights, including cybercrime, is on the increase. This requires caution, the knowledge of legislative solutions and litigation methods of exerting consumers' rights on the part of customers. The article focuses on the purchasing behaviour of Internet users taking into account consumer rights and…
The Adoption of The Internet of Things by Young Consumers – an Empirical Investigation
2017
On the background of theoretical considerations and literature review, this article presents the results of the preliminary study of young consumers about their adoption of the Internet of Things (IoT) - treated as the emerging technology, creating a new quality of information technology usage, despite perceived costs and privacy concerns. The data for the analysis came from purpose sample of 223 young consumers from Eastern Poland via CAWI questionnaire. The primary goal of the research was to explore the adoption of IoT by young consumers in Poland regarding the level of adoption and factors explaining this phenomenon. The main analysis used univariate analysis of variance (UNIANOVA) and …
Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion
2017
Resonant laser ionization and spectroscopy are widely used techniques at radioactive ion beam facilities to produce pure beams of exotic nuclei and measure the shape, size, spin and electromagnetic multipole moments of these nuclei. However, in such measurements it is difficult to combine a high efficiency with a high spectral resolution. Here we demonstrate the on-line application of atomic laser ionization spectroscopy in a supersonic gas jet, a technique suited for high-precision studies of the ground- and isomeric-state properties of nuclei located at the extremes of stability. The technique is characterized in a measurement on actinium isotopes around the N=126 neutron shell closure. A…
Long-ranged and soft interactions between charged colloidal particles induced by multivalent coions
2015
Forces between charged particles in aqueous solutions containing multivalent coions and monovalent counterions are studied by the colloidal probe technique. Here, the multivalent ions have the same charge as the particles, which must be contrasted to the frequently studied case where multivalent ions have the opposite sign as the substrate. In the present case, the forces remain repulsive and are dominated by the interactions of the double layers. The valence of the multivalent coion is found to have a profound influence on the shape of the force curve. While for monovalent coions the force profile is exponential down to separations of a few nanometers, the interaction is much softer and lo…
A fundamental catalytic difference between zinc and manganese dependent enzymes revealed in a bacterial isatin hydrolase
2018
Scientific reports 8(1), 13104 (2018). doi:10.1038/s41598-018-31259-y