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Institution

Wrocław University of Technology

EducationWrocław, Poland
About: Wrocław University of Technology is a education organization based out in Wrocław, Poland. It is known for research contribution in the topics: Laser & Fuzzy logic. The organization has 13115 authors who have published 31279 publications receiving 338694 citations.


Papers
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Journal ArticleDOI
TL;DR: It was found that the tested biostimulants did not influence statistically significantly the plant height, length of ear, and shank length, and the yield was comparable in all the experimental groups.
Abstract: The aim of the field trials was to determine the influence of supercritical algal extracts on the growth and development of winter wheat (variety Akteur). As a raw material for the supercritical fluid extraction (SFE), the biomass of microalga Spirulina plantensis, brown seaweed – Ascophyllum nodosum and Baltic green macroalgae was used. Forthial and Asahi SL constituted the reference products. It was found that the tested biostimulants did not influence statistically significantly the plant height, length of ear and shank length. The ear number per square meter was the highest in the group where the Baltic macroalgae extract was applied in the dose 1.0 L/ha (statistically significant differences). Number of grains in ear (statistically significant differences) and shank length was the highest in the group treated with Spirulina at the dose 1.5 L/ha. In the group with Ascophyllum at the dose 1.0 L/ha, the highest length of ear was observed. The yield was comparable in all the experimental groups (lack of statistically significant differences). Among the tested supercritical extracts, the best results were obtained for Spirulina (1.5 L/ha). The mass of 1000 grains was the highest for extract from Baltic macroalgae and was 3.5% higher than for Asahi, 4.0% higher than for Forthial and 18.5% higher than for the control group (statistically significant differences). Future work is needed to fully characterize the chemical composition of the applied algal extracts. A special attention should be paid to the extracts obtained from Baltic algae because they are inexpensive source of naturally occurring bioactive compounds, which can be used in sustainable agriculture and horticulture.

68 citations

Journal ArticleDOI
TL;DR: In this paper, the best laboratory 1st and 2nd generation solar cells that were recently achieved are described and the scheme of the layer structure and energy band diagrams will be analyzed in order to explain the boost of their efficiency with reference to the earlier standard designs.
Abstract: Photovoltaic (PV) technologies which play a role in PV market are divided into basic two types: wafer-based (1st generation PV) and thin-film cell (2nd generation PV). To the first category belong mainly crystalline silicon (c-Si) cells (both mono- and multi-crystalline). In 2015 around 90% of the solar market belonged to crystalline silicon. To the 2nd generation solar cells belongs thin film amorphous silicon (a-Si) or a combination of amorphous and microcrystalline silicon (a-Si/μc-Si), compound semiconductor cadmium telluride (CdTe), compound semiconductor made of copper, indium, gallium and selenium (CIS or CIGS) and III–V materials. The PV market for thin film technology is dominated by CdTe and CIGS solar cells. Thin film solar cells’ share for all thin film technologies was only 10% in 2015. New emerging technologies, called 3rd generation solar cells, remain the subject of extensive R&D studies but have not been used in the PV market, so far. In this review the best laboratory 1st and 2nd generation solar cells that were recently achieved are described. The scheme of the layer structure and energy band diagrams will be analyzed in order to explain the boost of their efficiency with reference to the earlier standard designs.

68 citations

Journal ArticleDOI
TL;DR: In this article, the densities of convolutional semigroups of probability measures are given under specific assumptions on the corresponding Levy measure and the Levy-Khinchin exponent.
Abstract: Estimates of densities of convolution semigroups of probability measures are given under specific assumptions on the corresponding Levy measure and the Levy–Khinchin exponent. The assumptions are satisfied, e.g., by tempered stable semigroups of J. Rosinski.

68 citations

Journal ArticleDOI
TL;DR: In this paper, miniature atmospheric pressure glow discharges (APGDs) were generated in contact with small-sized flowing liquid cathode systems, where solid pin electrodes or a miniature flow Ar microjet were applied as anodes.
Abstract: Miniaturized atmospheric pressure glow discharges (APGDs) were generated in contact with small sized flowing liquid cathode systems. As anodes a solid pin electrode or a miniature flow Ar microjet were applied. Both discharge systems were operated in the open to air atmosphere. Hydrogen peroxide (H2O2) as well as ammonium (NH4 +), nitrate (NO3 −), and nitrite (NO2 −) ions were quantified in solutions treated by studied discharge systems. Additionally, an increase in the acidification of these solutions was noted in each case. Emission spectra of the near cathode zone of both systems were measured in order to elucidate mechanisms that lead to the formation of active species in gas and liquid phases of the discharge. Additionally, the concentration of active species in the liquid phase (H2O2, NH4 +, NO3 − and NO2 −) was monitored as a function of the solution uptake rate and the flow rate of Ar. The suitability of investigated discharge systems in the water treatment was tested on artificial wastewaters containing an organic dye (methyl red), hardly removable by classical methods non-ionic surfactants (light Triton x-45 and heavy Triton x-405) and very toxic Cr(VI) ions. Preliminary results presented here indicate that both investigated flow-through APGD systems may successfully be applied for the efficient and fast on-line continuous flow chemical degradation of toxic and hazardous organic and inorganic species in wastewater solutions.

68 citations

Journal ArticleDOI
TL;DR: In this article, a 3D scanner was used to evaluate and describe the morphology of selected concrete substrate surfaces, and a special focus was placed on the advantages and disadvantages of the latter over the other scanners.

68 citations


Authors

Showing all 13239 results

NameH-indexPapersCitations
Krzysztof Palczewski11463146909
Claude B. Sirlin9847533456
Marek Czosnyka8874729117
Alfred Forchel85135834771
Jerzy Leszczynski7899327231
Kim R. Dunbar7447020262
Massimo Olivucci6729214880
Nitesh V. Chawla6138841365
Edward R. T. Tiekink60196721052
Bobby G. Sumpter6061923583
Wieslaw Krolikowski5950412836
Pappannan Thiyagarajan5924510650
Marek Samoc5840111171
Lutz Mädler5823227800
Rafał Weron5828512058
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202372
2022231
20211,579
20201,769
20191,753
20181,963