153 research outputs found
The Molecular Mechanism Behind Synaptic Transmission
No full textThis eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contac
The Molecular Mechanism Behind Synaptic Transmission
No full textThis eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contac
POWER OF OBSERVATIONAL HUBBLE PARAMETER DATA: A FIGURE OF MERIT EXPLORATION
No full textWe use simulated Hubble parameter data in the redshift range 0 <= z <= 2 to explore the role and power of observational H(z) data in constraining cosmological parameters of the Lambda CDM model. The error model of the simulated data is empirically constructed from available measurements and scales linearly as z increases. By comparing the median figures of merit calculated from simulated data sets with that of current Type Ia supernova (SNIa) data, we find that as many as 64 further independent measurements of H(z) are needed to match the parameter constraining power of SNIa. If the error of H(z) could be lowered to 3%, the same number of future measurements would be needed, but then the redshift coverage would only be required to reach z = 1. We also show that accurate measurements of the Hubble constant H-0 can be used as priors to increase the H(z) data's figure of merit.Astronomy & AstrophysicsSCI(E)36ARTICLE2null73
Li-ion battery electrode remanufacturing by nanosecond pulsed laser ablation
No full textEnergy crisis since 1970’s stimulate people searching for alternative energy after crude oil, Li-ion battery becomes a candidate by then as alternative energy storage method due to its capability for high power and large-scale applications. However, end of life strategies for aged Li-ion battery are severe challenges for scientists and scholars. Li-ion battery degrades to its end of life reflecting as battery capacity loss. Major reason for battery performance degradation and capacity deterioration has been revealed by researchers as formation of solid electrolyte interface (SEI) on electrodes, which reflects as loss of cyclable lithium ions, increase of electrode resistance, isolation formation, electrode material degradation and impedance increase.
This study is aiming at developing an environmental methodology for aged Li-ion battery remanufacturing rather than the normal recycling processes. Laser ablation, a dry, rapid and non-contact process without potential chemical pollutant generation technology is utilized to remove SEI from electrode surface. Throughout this study, detailed process of experimental cell design and fabrication, cell degradation process, electrode characterization process and ablation result validation are presented. Characterization methods, including scanning electron microscope (SEM), Raman spectroscopy (RS), and Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) are used to study the morphology, structure and chemical changes of the SEI on electrode surface. Results show SEI is removed under certain laser parameter condition, and faded capacity has been restored through validation, which indicates laser ablation is a feasible way to clean electrode surface and an effective methodology for aged Li-ion battery remanufacturing to bring end of life Li-ion battery back to life.Embargo status: Restricted until 09/2022. To request the author grant access, click on the PDF link to the left
Notice of Retraction: Ammonia oxidation in integrated powdered activated carbon and microfiltration process
No full textAn empirical research on risk factors identification in scale expansion of China commercial banks
No full textThe fiber-optic evanescent wave fluorescence sensor with a novel sensing architecture for determining penicillin G
No full textThe loss of personal privacy and its consequences for social research
No full textThis article chronicles more than 30 years of public opinion, politics, and law and policy on privacy and confidentiality that have had far-reaching consequences for access by the social research community to administrative and statistical records produced by government. A hostile political environment, public controversy over the decennial census long form, media coverage, and public fears about the vast accumulations of personal information by the private sector were catalysts for a recent proposal by the U.S. Bureau of the Census that would have significantly altered the contents of the 2000 census Public Use Microdata Sample (PUMS). These events show clearly that science does not operate independently from the political sphere but may be transformed by a political world where powerful interests lead government agencies to assume responsibility for privacy protection that can result in reducing access to statistical data
An end-to-end geometric deficiencies elimination algorithm for 3D meshes
No full textThe 3D mesh is an important representation of geometric data. It is widely used in computer graphics and has attracted more attention in computer vision community recently. However, in the generation of mesh data, geometric deficiencies (e.g., duplicate elements, degenerate faces, isolated vertices, self-intersection, and inner faces) are unavoidable. Geometric deficiencies may violate the topology structure of an object and affect the use of 3D meshes. In this paper, we propose an end-to-end algorithm to eliminate geometric deficiencies effectively and efficiently for 3D meshes in a specific and reasonable order. Specifically, duplicate elements can be first eliminated by assessing appear times of vertices or faces. Then, degenerate faces can be removed according to the outer product of two edges. Next, since isolated vertices do not appear in any face vertices, they can be deleted directly. Afterward, self-intersecting faces are detected and remeshed by using an AABB tree. Finally, we detect and remove an inner face according to whether multiple random rays shooted from a face can reach infinity. Experiments on ModelNet40 dataset illustrate that our method can eliminate the deficiencies of 3D meshes thoroughly.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Urban Data Scienc
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