123,018 research outputs found
Modelling the electric field effect in superconducting films
No full textModelling the electric field effect in superconducting films / N. Pavlenko. – In: Annalen der Physik. 516. 2004. S. 52-5
Pavlenko, ou le bonheur selon le «réalisme socialiste»
No full textAucouturier Michel. Pavlenko, ou le bonheur selon le «réalisme socialiste». In: Modernités Russes, n°5, 2004. Le bonheur dans la modernité. pp. 295-300
Modulation of superconductivity by ferroelectric polarization in confined ferroelectric-superconductor-ferroelectric films
No full textModulation of superconductivity by ferroelectric polarization in confined ferroelectric-superconductor-ferroelectric films / N. Pavlenko. – In: Physical review. B. 70. 2004. 09451
Trichocottus brashnikovi Soldatov & Pavlenko 1915
No full textTrichocottus brashnikovi Soldatov & Pavlenko, 1915. Hairhead Sculpin. To 22.5 cm (8.9 in) TL (Mecklenburg et al. 2002). Sea of Okhotsk and Tatar Strait, Sea of Japan (Mecklenburg et al. 2011) to Chukchi Sea as far north as 70°54’N, 164°34’W (Mecklenburg et al. 2011), and eastern Beaufort Sea as far east as 71°36’N, 155°02’W (Personal communication: University of Alaska Fairbanks Fish Collection, Fairbanks, Alaska), and eastern Bering Sea at Saint Matthew Island (60°39’N, 172°43’W) (Maslenikov et al. 2013). Benthic; depth: 7–90 m (23–295 ft), or perhaps to 320 m (1,050 ft) (Mecklenburg et al. 2016).Published as part of Love, Milton S., Bizzarro, Joseph J., Cornthwaite, Maria, Frable, Benjamin W. & Maslenikov, Katherine P., 2021, Checklist of marine and estuarine fishes from the Alaska-Yukon Border, Beaufort Sea, to Cabo San Lucas, Mexico, pp. 1-285 in Zootaxa 5053 (1) on page 126, DOI: 10.11646/zootaxa.5053.1.1, http://zenodo.org/record/557800
Influence of hydrothermal treatment on the crystalline form of SiO 2 synthesized by the sol-gel method
No full textPavlenko V. I. Influence of hydrothermal treatment on the crystalline form of SiO 2 synthesized by the sol-gel method / V. I. Pavlenko, N. I. Cherkashina, L. N. Demkina // IOP Conf. Series: Materials Science and Engineering. - 2018. - Vol.327. - 052026.The hydrothermal method and traditional sol-gel process for the synthesis of SiO2 particles were comparatively studied. For the synthesis of SiO2, tetraethyl orthosilicate (tetraethoxysilane or TEOS) and ammonium chloride (NH4OH) (as a catalyst) were used. SiO2 was prepared by the TEOS hydrolysis reaction at room temperature and hydrothermal treatment.
Morphology and structure of the final products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrum (FT-IR) and scanning electron micrograph (SEM). It was found that SiO2 product synthesized by the TEOS hydrolysis reaction at room temperature has an amorphous phase. XRD analysis shows the presence of an amorphous halo - a strong peak at Bragg angle 21 °-22 °. The hydrothermal treatment leads to crystallization of the material
A systems perspective analysis of an increased use of forest bioenergy in Canada: Potential carbon impacts and policy recommendations
No full textThe Government of Canada aims at reducing overall greenhouse gas emissions by 30% by 2030 (compared to 2005) and reaching net-zero GHG emissions by 2050. Several of the climate actions under development would incentivize an increased use of forest biomass for energy. However, lessons learned from bioenergy policies worldwide have shown that increasing the use of bioenergy can impact the forest sector as a whole and that the carbon impacts of bioenergy should be assessed holistically to limit unintended negative consequences. This study aims to summarize and present existing data in a manner that enables the Canadian government and stakeholders to identify bioenergy pathways that can contribute to Canada's decarbonization targets. Firstly, we synthetize existing statistical datasets on wood removals and uses into a holistic picture of wood flows across Canada's economy. We find that, in 2017, a minimum of 77.7 Mm3 of wood were used for energy in Canada, and that reported quantities of wood used exceeded the amount of wood removals by 14–33 Mm3 annually. Thus, while 72% of wood used for energy in 2017 derived from secondary industry residues, the origin of 26% of wood for energy cannot be identified, seriously hindering any consideration on the sustainability of the current forest bioenergy use in Canada. Secondly, we assess that the amount of wood used for energy might increase by 5.5–20.4 Mm3 by 2030. In order to identify the potential impacts of this extra bioenergy demand on GHG emissions, we reviewed relevant literature based on our qualitative analysis of the system dynamics of the forest sector in response to such an increased demand. Our results show that unless targeted measures are defined to stimulate the use of residues, it is possible that direct and indirect biogenic GHG emissions from increased use of forest bioenergy will undermine Canada's decarbonization goals. We recommend several measures to avoid this, including: discouraging the dedicated harvest of logs for bioenergy, prioritizing the collection and use of logging residues which are usually burned at roadside, and favoring the recovery and use of post-consumer wood. In addition, we recommend improving the consistency among statistical datasets on Canada's forestry sector
Modification of Optical Characteristics of a Polymer Composite Material under Irradiation
No full textCherkashina N. I. Modification of Optical Characteristics of a Polymer Composite Material under Irradiation / N. I. Cherkashina, A. V. Pavlenko // Technical Physics. - 2018. - Vol.6, № 4. - P. 571-575.Polymer composites based on polystyrene and modified SiO2 are synthesized. Effect of the SiO2 concentration on the surface (thermostatic) properties of the composites is analyzed. Surfaces of composites with different SiO2 concentrations are microscopically studied. Minor amounts of spherical agglomerates are obtained at relatively high SiO2 concentrations, and the size of the agglomerates may amount to 80 μm at a SiO2 concentration of 30 wt %. Variations in the integral absorbance of solar radiation are studied for the polymer composites irradiated with vacuum-UV radiation at a temperature of 125°C
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Crossover Between Mean-Field and Ising Critical Behavior in a Lattice-Gas Reaction-Diffusion Model
No full textLattice-gas models for CO oxidation can exhibit a discontinuous nonequilibrium transition between reactive and inactive states, which disappears above a critical CO-desorption rate. Using finite-size-scaling analysis, we demonstrate a crossover from Ising to mean-field behavior at the critical point, with increasing surface mobility of adsorbed CO or with decreasing system size. This behavior is elucidated by analogy with that of equilibrium Ising-type systems with long-range interactions.This article is published as Liu, Da-Jiang, N. Pavlenko, and J. W. Evans. "Crossover between mean-field and Ising critical behavior in a lattice-gas reaction-diffusion model." Journal of statistical physics 114, no. 1 (2004): 101-114, doi:10.1023/B:JOSS.0000003105.50683.c6. Posted with permission.</p
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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