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Effect of scots pine forest management on soil properties and carabid beetle occurrence under post-fire environmental conditions——a case study from Central Europe

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Forest Ecosystems 2020年第3期7卷 366-377页

作者： Ewa Błońska bartłomiej bednarz Magdalena Kacprzyk Wojciech Piaszczyk Jarosław Lasota Department of Ecology and Forest Silviculture Faculty of ForestryUniversity of Agriculture in KrakowAl.29-go Listopada 4631-425KrakówPoland Department of Forest Ecosystems Protection Faculty of ForestryUniversity of Agriculture in KrakowAl.29-go Listopada 4631-425KrakówPoland

Background: Fires have a fundamental impact on phytocoenoses and, depending on the size of the fire, can have a positive or negative effect. The role of fires in the formation of the species composition of plants, restoration of stands and changes in soil properties is well studied. However, the long-term relationship between forest management methods, soil properties and epigeic entomofauna assemblages in post-fire areas is still not clear. The effects of Scots pine stand management methods on biochemical soil properties and ground beetle assemblages in the largest post-fire area in Central Europe after the second World were investigated. The study was conducted in the Rudy Raciborskie Forest district in southern Poland. The soil properties and epigeic beetle community structure were analysed. The research covered areas with natural and artificial pine regeneration, which were subjected to various care ***: The tendency for higher accumulations of organic matter in the soil of stands that underwent natural regeneration was proven. The stimulating role of soil organic carbon on the activity of dehydrogenases in the soil of naturally renewed areas with silvicultural treatment(NRAT) was noted. Regardless of the manner of stand regeneration, the activity of β-glucosidase was higher in the areas in which breeding treatments were ***, managed forest stands presented a higher abundance of carabid beetles than stands without treatment practices. Thirteen epigeic beetle species from the families Geotrupidae, Carabidae, Curculionidae,Cerambycidae and Silphidae were captured, with beetles from the first two families being the most numerous. Rare epigeal carabid species in the fauna of Poland and Europe, such as Carabus glabratus(Paykull) and Carabus auronitens Fabr., found appropriate habitat conditions for survival in the post-fire areas. Compared with the other areas, in the NRAT area, there were better stand and soil properties and more fea

关键词： Stand treatment strategy Forest regeneration Enzyme activity Soil organic carbon Epigeic beetle assemblage structure

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Preliminary assessment of growth and survival of green alder(Alnus viridis), a potential biological stabilizer on fly ash disposal sites

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Journal of Forestry Research 2015年第1期26卷 131-136页

作者： Marcin Pietrzykowski Wojciech Krzaklewski bartomiej Wo Department of Forest Ecology Forest FacultyUniversity of Agriculture in Krakow

This paper presents preliminary assessment of seedling survival and growth of green alder（Alnus viridis（Chaix） DC. in Lam. ＆ DC.） planted on fly ash disposal sites. This kind of post-industrial site is extremely hard to biologically stabilize without top-soiling. The experiment started with surface preparation using NPK start-up mineral fertilizer at 60–36–36 kg ha-1followed by initial stabilization through hydro-seeding with biosolids（sewage sludge 4 Mg ha-1dry mass） and a mixture of grasses（Dactylis glomerata L. and Lolium multiflorum Lam.）（200 kg ha-1）. Subsequently, three-years-old green alder seedlings were planted in plots on two substrate variants：the control（directly on combustion waste） and plots with3 dm3 lignite culm from a nearby mine introduced into the planting pit. Five years of preliminary monitoring show good survival seedling rates and growth parameters（height（h）, average increase in height（Dh）, number of shoots（L o）and leaf nitrogen supply in the fly ash disposal *** of the site with a combination of lignite culm in planting pits and preliminary surface preparation by hydroseeding and mineral fertilization had the most positive effect on green alder seedling parameters. The results indicate that it is possible and beneficial to use green alder for biological stabilization on fly ash disposal sites.

关键词： Fly ash Green alder Seedlings survival Growth Biological stabilisation

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Effect of selective laser treatment on initiation of fatigue crack in the main part of an undercarriage drag strut

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Chinese Journal of Aeronautics 2019年第3期32卷 701-714页

作者： Anna BIE? Marek SZKODO Jerzy DOBERSKI bart?omiej KARPI?SKI Technical Sciences Faculty University of Warmia and Mazury in Olsztyn Mechanical Engineering Faculty Gdansk University of Technology Military Aircraft Factory No.2 Joint Stock Company Szubińska 107 85-915 Bydgoszcz Poland

This paper presents the results of material characterization and a fatigue test conducted for a laser-re-melted drag strut used in an aircraft landing gear. The drag strut was re-melted with a CO_2 laser beam. Eight re-melted paths were made in the form of spiral lines along the axis of the drag strut. Next, the drag strut was subjected to variable loads on a testing machine simulating loads occurring when an aircraft lands. The fatigue test showed that the laser-treated drag strut was able to withstand 1700 simulated cycles of landing. This result was 70% better than that obtained for a drag strut with no laser treatment. In order to find the reason for the increase in the number of cycles of simulated landings, tests were carried out using transmission and scanning electron microscopes, a computer microtomograph, an X-ray diffractometer, and a nanoindenter,respectively. Results of the conducted research indicated that the reasons for the increased fatigue life of the laser-treated undercarriage drag strut were both an ultra-fine cellular martensitic microstructure and compressing residual stresses generated during the laser re-melting of the surface layer of the material.

关键词： Fatigue wear Laser re-melting Nanoindentation testing Residual stresses Steel alloy

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Hey mister Tambourine Dove, sing a song for me: simple but individually specific songs of Turtur tympanistria from Cameroon

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Avian Research 2019年第2期10卷 209-220页

作者： Tomasz S.Osiejuk bart?omiej ?bikowski Amie Wheeldon Micha? Budka Department of Behavioural Ecology Institute of Environmental BiologyFaculty of BiologyAdam Mickiewicz University

Background: The broadcast song of the Tambourine Dove (Turtur tympanistria) is a repetitive coo series produced in a very stereotyped way. The song is similar to those of the other species within the Turtur genus and likely reflects the adaptation to long distance signalling in tropical habitats. There is no study assessing individual variation of the Tambourine Dove song or for the possibility of identity coding through song features. Methods: We obtained recordings of 578 songs from 41 males within a population inhabiting montane forest in Cameroon between 2008 and 2018. Additionally, we analysed also recordings from automatic recorders working for a longer time during the year. Songs were analysed to get basic information about within- and between-individual spectro-temporal variation. Potential of identity coding and discriminant analyses were used to investigate if and how these songs may convey information about male identity. Results: The song of the Tambourine Dove is a very simple series of short, unmodulated whistles with low frequency and a narrow bandwidth. Measurements of single song features indicated either none or a weak potential for identity coding. The overall variation in song frequency characteristics was very low. However, the number of notes forming a song (and consequently the duration) had a similar variability both within- and between individuals. When using multiple song measurements discrimination analysis revealed a high potential for identity coding although it seems that the temporal pattern of the beginning of a song carries the most information about sender identity. The production of initial notes within a song has very precise, individually specific timing allowing for up to 96.7% correct recognitions of songs. Comparison of recordings from the same points but separated in time by over a month indicates that song parameters are individually stable over longer period. Conclusions: Despite having highly stereotyped and simple songs,

关键词： Cameroon Identity coding Song Tambourine Dove Turtur tympanistria

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Field and CFD Study of Fuel Distribution in Pulverized Fuel(PF)Boilers

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Journal of Thermal Science 2020年第3期29卷 535-545页

作者： CIUKAJ Szymon HERNIK bartlomiej Institute of Power Engineering and Turbomachinery Silesian University of Technology(SUT)Konarskiego 2044-101 GliwicePoland

The article presents both field and CFD results of a new concept of a mechanical pulverized fuel(PF)*** goal of the study was to improve the pulverized coal-air mixture separation in PF boilers where the fuel preparation and feeding system was operated in a combined coal and biomass grinding *** numerical analysis was preceded after a field study,where measurements were carried out in a pulverized coal-fired(PC)boiler equipped with a technology of NOx reduction by means of primary *** distribution of a pulverized coal-air mixture to the individual burners is one of the fundamental tasks of the combustion systems where the primary methods are implemented to control the NOx *** maintaining the proper distribution of fuel to the burners related primarily to the boilers where the coal and biomass co-grinding is *** the load of coal-mills and fuel type at the same time(i.e.,different types of biomass)could result in less effective separation of pulverized fuel particles in PF *** of an appropriate construction of a distributor will allow the better control of the combustion process which results in decreased NOx emission while keeping the proper combustion efficiency,i.e.,less unburned carbon(UBC)in the fly *** results of the field measurements made it possible to create a CFD distribution base model,which was used for the analysis of a new splitter construction to be used in a PF *** analysis of the numerical splitter enables precise analysis of its construction,including the efficiency of separation and the prediction of conveying of the coal and biomass particles.

关键词： pulverized fuel(PF)boiler NOx reduction biomass co-firing fuel distribution

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Secondary release of the peripheral nerve with autologous fat derivates benefits for functional and sensory recovery

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Neural Regeneration Research 2021年第5期16卷 856-864页

作者： Natalia E.Krzesniak Anna Sarnowska Anna Figiel-Dabrowska Katarzyna Osiak Krystyna Domanska-Janik bartłomiej H.Noszczyk Department of Plastic and Reconstructive Surgery Center of Postgraduate Medical EducationProf.W.Orlowski Memorial HospitalWarsawPoland 2Mossakowski Medical Research CenterPolish Academy of SciencesWarsawPoland

The reconstruction of nerve continuity after traumatic nerve injury is the gold standard in hand ***,tension-free,end-to-end nerve suture ensures the best *** recovery is mostly promising;however,in a few cases,insufficient outcomes in motor or sensory function are ***-and extra-fascicular scarring accompanies the nerve regeneration process and limits final *** nerve release in those cases is ***,scarring recurrence cannot be eliminated after secondary revision and *** supportive influences of mesenchymal stem cells in the process of nerve regeneration were observed in many preclinical ***,a limited number of studies in humans have analyzed the clinical usage of mesenchymal stem cells in peripheral nerve reconstruction and *** objective of this study was to evaluate the effects of undifferentiated adipose-derived stromal/stem cell injection during a last-chance surgery(neurolysis,nerve release)on a previously reconstructed *** patients(one female,two males;mean age 59±4.5 years at the time of injury),who experienced failure of reconstructions of median and ulnar nerves,were included in this *** the revision surgery,nerve fascicles were released,and adiposederived stromal/stem cells were administered through microinjections along the fascicles and around the adjacent tissues after external *** 36 months of followup,patients noticed gradual signs of sensory and in consequence functional *** adverse effects were *** nerve release with adipose-derived stromal/stem cells support is a promising method in patients who need secondary nerve release after nerve *** method can constitute an alternative procedure in patients experiencing recovery failure and allow improvement in cases of limited nerve *** study protocol was approved by the Institutional Review Board(IRB)at the Centre of Pos

关键词： nerve release neurolysis stem cells adipose-derived stem cells scar threshold sensation pain hypersensitivity forearm

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Geomorphometric relief classification with the κ-median method in the Silesian Upland,southern Poland

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Frontiers of Earth Science 2020年第1期14卷 152-170页

作者： bartlomiej SZYPULA Malgorzata WIECZOREK Institute of Earth Sciences Faculty of Natural SciencesUniversity of Silesia in KatowiceSosnowiec 41-200Poland Department of Geoinformatics and Cartography Faculty of Earth Sciences and Environment ManagementUniversity of WroclawWroclaw 50-137Poland

The aim of this study is geomorphometric relief classification of a temperate latitude upland area in Central *** Silesian Upland represents diversified structural relief which contains a fan-shaped configuration of long thresholds and wide erosion depressions.A 20 m × 20 m digital elevation model(DEM)provided input data for the *** κ-median method was applied to examine morphometric variables of the *** aim of these activities was to identify clusters with objects of similar mathematical *** clusters were the basis of landform *** numbers of clusters 4 transparently show hypsometric *** elements of the morphology of the area were clearly *** division into 6 clusters gives the best results-a detailed but clear image of the morphological diversity by distinguishing characteristic landform *** results for 8 clusters show significant background noise and are ambiguous,which makes them diflBcult to *** research has confirmed that the κ-median method is a useful tool for landform *** determined optimal parameters of this method(filtering window size,DEM resolution,number of clusters,aspect influence).

关键词： κ-median method relief classifications digital elevation model(DEM) geomorphometry Silesian Upland

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Low-pressure Nitriding according to the FineL PN technology in Multi-Purpose Vacuum Furnaces

Low-pressure Nitriding according to the FineL PN technology ...

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2nd International Conference on Advanced Materials and Information Technology Processing(AMITP 2012)

作者： Kula Piotr Pietrasik Robert Wo?owiec Emilia Januszewicz bart?omiej Rzepkowski Adam Institute of Materials Science and Engineering Technical University of Lodz

ISBN: (纸本)9783037855232

Developing steady state models to conduct and control repeatable processes of low-pressure nitriding is not possible in practice as the nitrogen content in a nitrided layer depends not only on the nitriding parameters, but also on the content of alloying elements in steel and the nucleation stage which is difficult to control. Therefore, a new concept of conducting such processes has been proposed. It has been shown that application of an appropriate method of activation of steel parts surface makes the nucleation stage uniform and reduces its duration. A system based on artificial intelligence methods has also been proposed, which enables modelling and control of non-equilibrium processes of low-pressure nitriding of tool steels. This model is based on the "boost-diffusion" schedule of the process.

关键词： Low-pressure nitriding vacuum nitriding nitrides heat treatment tool steels neural networks

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Long-term monitoring of the recruitment and dynamics of large wood in Kamienica Stream, Polish Carpathians

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Journal of Mountain Science 2020年第6期17卷 1281-1293页

作者： Pawel MIKUS bartlomiej WYZGA Institute of Nature Conservation Polish Academy of Sciencesal.Mickiewicza 3331-120 KrakowPoland

Studies presenting long-term observations of the recruitment and mobility of large wood in mountain watercourses are scarce,but they can considerably contribute to the knowledge of river/riparian forest interactions and the assessment of flood hazard resulting from wood mobility during *** dieback of riparian forest along the headwater course of Kamienica Stream in the Polish Carpathians,caused by bark beetle infestation of spruce trees,has raised concerns about potential increases of large wood recruitment to the stream and of the flood hazard to downstream valley *** October 2009,429 trees growing along three sections of the stream were tagged with numbered metal plates and monitored over 10 years to determine the timing and causes of their delivery to the channel and the lengths of their displacement during individual flood ***,in 2012 the mode of location of wood deposits and a degree of wood decay were determined in the second-to fourth-order stream *** monitoring of tagged trees indicated that trees were recruited to the channel during highintensity meteorological and hydrological events,mostly as a result of bank erosion during floods or *** 22%of tagged trees recruited to the channel during 10 years,the rate of turnover of the riparian trees was estimated at 45 *** the riparian area is overgrown with trees with ages up to^160 years,the rate evidences substantial intensification of large wood recruitment to the channel in the recent *** of large wood inventory and the 10-year-long monitoring of tagged trees indicated variable mobility of large wood along the upper course of the *** mobility was negligible in the second-order stream reach,very small in the third-order reach,and greater,but still limited in the fourth-order *** is transported longer distances only during major ***,the advanced state of decay of most pieces leads to their disintegration during floods,pr

关键词： Large wood Wood dynamics Wood monitoring Wood inventory Wood recruitment Polish Carpathians

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Carbon sink potential and allocation in above-and below-ground biomass in willow coppice

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Journal of Forestry Research 2021年第1期32卷 349-354页

作者： Marcin Pietrzykowski bartłomiej Woś PawełTylek Dariusz Kwaśniewski Tadeusz Juliszewski Józef Walczyk Justyna Likus-Cieślik Wojciech Ochał Sylwester Tabor Department of Ecology and Silviculture Faculty of ForestryUniversity of Agriculture in KrakowAl.29 Listopada 4631-425 KrakówPoland Department of Forest Work Mechanization Faculty of ForestryUniversity of Agriculture in KrakowAl.29 Listopada 4631-425 KrakówPoland Institute of Agricultural Engineering and Informatics Faculty of Production and Power EngineeringUniversity of Agriculture in Krakowul.Balicka 116B30-149 KrakówPoland Institute of Machinery Management Ergonomics and Production ProcessesFaculty of Production and Power EngineeringUniversity of Agriculture in Krakowul.Balicka 116B30-149 KrakówPoland Department of Biometry and Forest Productivity Faculty of ForestryUniversity of Agriculture in KrakowAl.29 Listopada 4631-425 KrakówPoland

This research estimates carbon sink and allocation in above-and below-ground biomass of a 12-year-old willow coppice plantation on fl uvisol soil near the Vistula River(southern Poland).The plantation showed high C sink potential and sequestration rates.C sequestration by aboveground biomass was estimated at 10.8 Mg C ha^−1 a^−*** in coarse roots was estimated at 1.5 Mg C ha^−1 a^−1 and in fi ne roots at 1.2 Mg C ha^−1 a^−*** C sequestered(above-ground biomass,coarse roots and fi ne roots)was estimated at 13.5 Mg C ha^−1 a^−*** results confi rm the potential of fast-growing plantations of willow to mitigate,over a short time span,the eff ects of high CO 2 concentrations.

关键词： Willow coppice Biomass Roots Carbon sequestration

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