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Polyurethane Composites synthesized Using Natural Oil-based Polyols and sisal Fibe

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Journal of Renewable materials 2018年第4期6卷 426-437页

作者： s.michalowski m.A.mosiewicki m.Kuran´ska m.I.Aranguren A.Prociak Department of Chemistry and Technology of Polymers Faculty of Chemical Engineering and TechnologyCracow University of TechnologyWarszawska 2431-155CracowPoland Instituto de Investigaciones en Ciencia y Tecnología de materiales-Universidad Nacional de mar del Plata Consejo Nacional de Investigaciones Científicas y TécnicasAv.J.B.Justo 43027600Mar del PlataArgentina

Elastomeric polyurethanes were prepared from a reference polyurethane system modified with biobased polyols synthesized using rapeseed or palm *** reference material was modified by replacement of the commercial polyol by 10%of biopolyols and also by addition of sisal fibers up to 5 wt%.The higher functionality of the biopolyols increased the crosslinking density of the networks and this was reflected by an increase in hardness and a decrease in water *** effect of the sisal fibers mainly improved the mechanical and thermomechanical properties of the system with rapeseed oil because of good dispersion and strong fiber-matrix *** system containing palm oil polyol corresponded to an initial formulation of high viscosity and,consequently,the resulting composites presented lower densities than the theoretically expected *** results are associated with fiber dispersion problems in the initial reactive mixture.

关键词： biopolyols palm oil rapeseed oil polyurethane composites

Deadwood affects the soil organic matter fractions and enzyme activity of soils in altitude gradient of temperate forests

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Forest Ecosystems 2023年第3期10卷 316-327页

作者： Ewa błońska Wojciech Prazuch Jarosław Lasota Department of Ecology and silviculture Faculty of ForestryUniversity of Agriculture in Krakow29 Listopada 46 Str.31-425KrakowPoland

The main objective of our study has been to determine the role of deadwood in the shaping of the amount of soil organic matter fractions in mountain forest *** this purpose,a climosequence approach comprising north(N)and south(s)exposure along the altitudinal gradient(600,800,1000 and 1200 m a.s.l.)was set *** comparing the properties of decomposing deadwood and those of the soils located directly beneath the decaying wood we drew conclusions about the role of deadwood in the shaping of soil organic matter fractions and soil carbon storage in different climate *** basic properties,enzymatic activity and fractions of soil organic matter(sOm)were determined in deadwood and affected directly by the components released from decaying *** decomposed deadwood impacts soil organic matter stabilization more strongly than the less decayed deadwood and the light fraction of sOm is more sensitive to deadwood effects than the heavy fraction regardless of the location in the altitude *** in sOm mineral-associated fraction C content is more pronounced in soils under the influence of deadwood located in lower locations of warmer *** released from decaying wood stimulate the enzymatic activity of soils that are within the range of deadwood influence.

关键词： Enzyme activity Forest soils Heavy fraction Light fraction soil organic matter

Luminescent properties of praseodymium doped Y_2O_3 and LaAlO_3 nanocrystallites and polymer composites

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Journal of Rare Earths 2011年第12期29卷 1123-1129页

作者： m.Dudek A.Jusza K.Anders L.Lipińska m.baran R.Piramidowicz Faculty of Physics Warsaw University of Technology Institute of microelectronics and Optoelectronics Warsaw University of Technology Institute of Electronic materials Technology

Luminescent properties of Y2O3 and LaAlO3 nanopowders doped with Pr^3＋ ions and PmmA-based composite materials doped with these powders were reported. The set of active nanopowders differing in praseodymium ions concentration was prepared using sol-gel method and carefully characterized with respect to emission properties in the visible spectral range. In particular, the excitation and emission spectra were measured together with fluorescence decay profiles and the differences between optical properties of these materials were discussed and compared with data available for bulk materials. Finally, the PmmA-based composite materials doped with Pr^3＋：Y2O3 and Pr^3＋：LaAlO3 nanopowders were manufactured and characterized. The obtained results showed that polymer composites doped with active nanopowders in general tended to keep the luminescent properties of the original nanopowders.

关键词： nanocrystals praseodymium Y2O3 LaAlO3 visible emission PmmA nanocomposites rare earths

Discovery of Two New Peculiar subgenera and Two New species of Tipula Linnaeus,1758(Diptera,Tipulidae)from baltic Amber

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Acta Geologica sinica(English Edition) 2021年第3期95卷 715-723页

作者： Wieslaw KRZEmIŃsKI Iwona KANIA Wiktoria JORDAN-sTAsIŁO Herman DE JONG Ewa KRZEmIŃska Kornelia sKIbIŃska Institute of biology Pedagogical University of KrakówPodbrzezieKraków 331-054Poland Department of Paleobiology and Evolutionary biology University of RzeszówZelwerowiczaRzeszów 435–601Poland Naturalis biodiversity Center DarwinwegCR Leiden 22333Netherlands Institute of systematics and Evolution of Animals Polish Academy of SciencesSławkowskaKraków 1731-016Poland

Two new fossil subgenera and two new fossil species of the genus Tipula Linnaeus,1758,Tipula(succinica)berendti *** *** Tipula(Gedanica)adamowiczi *** sp.n.,are described from baltic amber and compared with other species of Tipula known from the *** two new subgenera and species described herein are an excellent bridge between recent specimens and those preserved in sedimentary rocks,and thus enrich knowledge on the evolution of the family.

关键词： invertebrate paleontology taxonomy craneflies Tipulomorpha Tipula Eocene Lutetian–Priabonian

Anthropogenic noise interacts with the predation risk assessment in a free-ranging bird

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Current Zoology 2024年第3期70卷 277-283页

作者： Piotr matyjasiak Patrycja Chacińska Piotr Książka Institute of biological sciences Cardinal Stefan Wyszyński University in WarsawWóycickiego 1/3PL-01-815 WarsawPoland Department of Environmental Acoustics Institute of Environmental Protection—National Research InstituteKolektorska 4PL-01-692 WarsawPoland

Anthropogenic noise can affect a number of behavioral,physiological,and ecological aspects of animals from major taxonomic groups,raising serious conservation *** example,noise pollution impacts communicative behavior and perception of signals,movements and distribution,as well as predator–prey interactions,such as hunting success or predator detection and predation risk *** have carried out an experimental playback study,in which we investigated whether exposure to anthropogenic noise(sound of a tractor)distracts free-ranging barn swallows Hirundo rustica from paying attention to an approaching human“predator”(the“cognitive distraction”hypothesis),or whether noise leads to increased responsiveness to this“predator”(the“increased threat”hypothesis).The subjects were male barn swallows attending their breeding territories during the time when the females were *** found that barn swallow males initiated fight at signifcantly greater distances to the approaching human“predator”in the noise treatment than during the quiet control *** results suggest that anthropogenic noise causes increased vigilance and reactivity rather than a distraction,enabling birds to avoid the“predator”more *** further discuss the mechanism behind the increased alertness in response to noise and contrast the“increased threat”mechanism,usually tested in previous studies,with an alternative“cognitive sensitization”mechanism.

关键词： anthropogenic noise barn swallow cognitive distraction flight initiation distance Hirundo rustica predation risk assessment

scale of seismic and rock burst hazard in the silesian companies in Poland

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mining science and Technology 2009年第5期19卷 604-608页

作者： PATY■ska Renata KAbIEsZ Józef Central mining Institute

Presently the seismic and rock burst hazard appears still to be important in most of hard coal mines in Poland. Recently, there was a significant increase of seismic activity of the silesian rock massive, when compared with the previous years. In the period 1999-2008 the hard coal mines experienced 34 rock bursts. The causes of rockburst occurrence are presented based on the analysis of the rockbursts occurring in the Polish hard coal mines. The scale of the rockburst hazard has been characterized with respect to the mining and geological conditions of the existing exploitation. Of the factors influencing the state of rockburst hazard, the most essential one is considered the depth interval ranging from 600 m to 900 m. The basic factors that promote the rockburst occurrence are as follows： seismogenic strata, edges and remnants, goal, faults, pillars and excessive paneling.

关键词： rockbursts mining and geological conditions

Resource optimisation in aquaponics facility via process monitoring and graph-theoretical approach

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Carbon Resources Conversion 2022年第4期5卷 255-269页

作者： Vojtˇech Ondruˇska bing shen How michal Netolický Vítˇezslav m´aˇsa sin Yong Teng brno University of Technology Institute of Process Engineering&NETME CentreTechnick´a 2896/261669 BrnoCzech Republic biomass Waste-to-Wealth special Interest Group Research Centre for Sustainable TechnologiesFaculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang Tiga93350KuchingSarawakMalaysia Flenexa plus s.r.o. Pˇr´aslavice 33578354Pˇr´aslaviceOlomoucCzech Republic Radboud University Institute for Molecules and MaterialsP.O.Box 90106500 GL Nijmegenthe Netherlands

Energy efficiency and economic viability are the often-quoted issues in aquaponic *** work aims to(i)identify process technologies and technical measures which would enhance the profitability of aquaponics business while conserving energy and other resources,and(ii)to validate the determined optimal measures on the testing aquaponics *** process network synthesis technique was used to search for an optimal process pathway while the image processing technique was applied to automatically monitor the growth rate of produce since it is the main revenue stream in *** the aid of P-graph method,the optimal feasible structure has 9 times higher annual net income than that of the existing *** optimal solution includes the integration of electrical heat pump,biogas system,and utilizes black solider fly(bsF)facility to produce fish *** light energy savings were achieved by practical installation of reflective foils which improved 16.88%of Photosynthetic photon flux density(PPFD)on growth *** measures can help the aquaponics farms to become more competitive and to decrease their ecological footprint.

关键词： Aquaponics Process monitoring P-graph Process optimization Energy savings

Combining pmINFLUX,graphene energy transfer and DNA-PAINT for nanometer precise 3D super-resolution microscopy

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Light(science & Applications) 2023年第4期12卷 585-592页

作者： Jonas Zähringer Fiona Cole Johann bohlen Florian steiner Izabela Kamińska Philip Tinnefeld Department of Chemistry and Center for Nanoscience Ludwig-Maximilians-Universität MünchenButenandtstr.5-13 Haus E81377 MünchenGermany Institute of Physical Chemistry Polish Academy of sciences Kasprzaka 44/5201-224WarsawPoland Department of Physics Ludwig-Maximilians-Universität MünchenSchellingstra■e 480799 MünchenGermany

3D super-resolution microscopy with nanometric resolution is a key to fully complement ultrastructural techniques with fluorescence ***,we achieve 3D super-resolution by combining the 2D localization of pmINFLUX with the axial information of graphene energy transfer(GET)and the single-molecule switching by *** demonstrate≤2 nm localization precision in all 3 dimension with axial precision reaching below 0.3 *** 3D DNA-PAINT measurements,structural features,i.e.,individual docking strands at distances of 3 nm,are directly resolved on DNA origami *** and GET represent a particular synergetic combination for super-resolution imaging near the surface such as for cell adhesion and membrane complexes as the information of each photon is used for both 2D and axial localization ***,we introduce local PAINT(L-PAINT),in which DNA-PAINT imager strands are equipped with an additional binding sequence for local upconcentration improving signal-to-background ratio and imaging speed of local clusters.L-PAINT is demonstrated by imaging a triangular structure with 6 nm side lengths within seconds.

关键词： resolution transfer precise

Piezoresponse force microscopy and dielectric spectroscopy study of ba_(0.6)sr_(0.4)TiO_(3)thin films

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Journal of Advanced Dielectrics 2019年第3期9卷 29-35页

作者： Dionizy Czekaj Agata Lisińska-Czekaj Department of materials Engineering and Welding Faculty of mechanical Engineering Gdansk University of Technology 11/12 Narutowicza St.Gdansk 80-233Poland

Research on synthesis,characterization and determination of processing-structure-property relationships of commercially important ferroelectric thin films has been *** sol-gel type solution deposition technique was applied to produce good quality thin films of ba_(0.6)sr_(0.4)TiO_(3)(bsT60/40)chemical composition on the stainless steel *** thin films were characterized in terms of their microstructure,crystal structure,phase composition,piezoelectric and dielectric *** was found that the bsT60/40 thin film adopted the cubic structure at room temperature with an elementary cell parameter a-3:971e8TÅ.morphology of the thin film surface was studied with Atomic Force microscopy(AFm).Average roughness of the thin films surface was found(sa=0:055μm).Piezoresponse Force microscopy(PFm)was applied for the thin film *** piezoelectric regions were found in bsT60/40 thin ***,dielectric response measured at room temperature was studied in assumption of piezoelectric electric equivalent circuit.

关键词： Thin film ba_(0.6)sr_(0.4)TiO_(3) crystal structure dielectric spectroscopy piezoresponse force microscopy