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Fe-N-C catalysts for oxygen electroreduction under external magnetic fields:Reduction of magnetic O_(2) to nonmagnetic H_(2)O

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Journal of Energy Chemistry 2022年第1期31卷 296-308,I0008页

作者： wojciech Kicinski Jakub P.Sek Agata Kowalczyk Sylwia Turczyniak-Surdacka Anna M.Nowicka Slawomir Dyjak Boguslaw Budner Mikolaj Donten Institute of Chemistry Military University of Technology2 Kaliskiego Str.PL 00-908 WarsawPoland Faculty of Chemistry University of WarsawPasteura 1 StrPL 02-093 WarsawPoland Faculty of Chemistry Biological and Chemical Research CentreUniversity of WarsawZwirki i Wigury 101 StrPL 02-089 WarsawPoland Institute of Optoelectronics Military University of Technology.2 Kaliskiego StrPL 00-908 WarsawPoland

An extensive analysis of iron-nitrogen-carbon(Fe-N-C)electrocatalysts synthesis and activity is presented concerning synthesis conditions such as initial Fe content,pyrolysis temperature and atmosphere(inert N_(2),reducing NH_(3),oxidizing Cl_(2) and their sequential combinations)and the influence of an external magnetic field on their performance in oxygen reduction reaction(ORR).Thermosetting porous polymers doped with FeCl_(3) were utilized as the Fe-N-C catalysts *** pyrolysis temperature was varied within a 700-900℃*** temperature and atmosphere of pyrolysis strongly affect the porosity and compositi on of the resultant Fe-N-C catalysts,while the in itial amount of Fe precursor shows much weaker *** under NH_(3) yields materials similar to those pyrolyzed under an inert atmosphere(N_(2)).In contrast,pyrolysis under Cl_(2) yields carbon of peculiar character with highly disordered structure and extensive *** application of a static external magnetic field strongly enhances the ORR process(herein studied in an alkaline environment)and the enhancement correlates with the Fe content in the Fe-N-C *** Fe-N-C materials containing ferromagnetic iron phase embedded in N-doped microporous carbon constitute attractive catalysts for magnetic field-aided anion exchange membrane fuel cell technology.

关键词： Oxygen reduction reaction Fe-N-C catalyst PGM-free catalyst Magnetic field Chronoamperometry Anion exchange membrane fuel cell (AEMFC)

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Concept of a swirling diffuser in batch blending tanks

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Chinese Journal of Chemical Engineering 2020年第2期28卷 378-382页

作者： wojciech Artichowicz Jerzy M.Sawicki Gdańsk University of Technology Faculty of Civil and Environmental EngineeringNarutowicza 11/1280-233 GdańskPoland

The mixing of two or more components belongs to the category of the most common unit operations, both in technology and in nature. One particular version is homogenization(blending), the effectivity of which is strongly related to the blending time. Among many differentiated individual solutions of mixing systems used in blenders, one should distinguish the class of agitators with diffusers. An analysis of the character of the velocity field during a blending chamber operation leads to the conclusion that it would be of avail to outfit a straight diffuser with different setups of elbows. In consequence, the vertical direction of the inflowing fluid stream would be changed into the horizontal direction of the outflowing stream, which should intensify the blending process. The concept has been verified experimentally, making use of the tracer methodology. The obtained results confirmed the theoretical conclusion that the blending time for the swirling-diffuser was shorter than for the classical straight one.

关键词： Batch blending chamber Swirling diffuser Blending time

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Transposable elements significantly contributed to the core promoters in the human genome

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Science China(Life Sciences) 2019年第4期62卷 489-497页

作者： Marten Kellner wojciech Maka?owski Institute of Bioinformatics Faculty of Medicine University of Münster

Transposable elements(TEs) are major components of the human genome constituting at least half of it. More than half a century ago, Barbara McClintock and later Roy Britten and Eric Davidson have postulated that they might be major players in the host gene regulation. We have scanned a large amount of data produced by ENCODE project for active transcription binding sites(TFBSs) located in TE-originated parts of polymerase II promoters. In total, more than 35,000 promoters in six different tissues were analyzed and over 26,000 of them harbored TEs. Moreover, these TEs usually provide one or more of TFBSs in the host promoters, which resulted in more than 6% of active TFBSs in these regions located in the TE-originated sequences. Rewiring of transcription circuits played a major role in mammalian evolution and consequently increased their functional and morphological diversity. In this large-scale analysis, we have demonstrated that TEs contributed a large fraction of human TFBSs. Interestingly,these TFBSs usually act in a tissue-specific manner. Thus, our study clearly showed that TEs played a significant role in shaping expression pattern in mammals and humans in particular. Furthermore, since several TE families are still active in our genome,they continue to influence not only our genome architecture but also gene functioning in a broader sense.

关键词： transposable elements genome evolution gene expression evolution transcription factors transcription binding sites,ENCODE project promoters

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In elderly population prophylactic anticoagulation favors early detection of digestive track cancers: an observational study in eastern Poland

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Journal of Geriatric Cardiology 2019年第6期16卷 495-497页

作者： Malgorzata Szlendak wojciech Myslinski Jerzy Mosiewicz wojciech Barud Department of Internal Diseases Medical University in Lublin Poland Human Anatomy Department Medical University in Lublin Poland

The launch of non-VKA oral anticoagulants (NOACs) caused revolution in thrombosis prevention, which was mainly due to their safety and simplicity in treatment when compared to vitamin K antagonists (VKA). Clinical observations indicate that despite the benefits of NOACs, many patients still use VKA even if they cannot cope with dose modifications and often do not control INR.

关键词： Anticoagulants Colonic neoplasms Gastrointestinal hemorrhage

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Analysis of the State of the Fine-Dispersive Precipitations in the Structure of High Strength Steel Weldox 1300 by Means of Electron Diffraction

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Journal of Iron and Steel Research(International) 2011年第S1期18卷 135-142页

作者： Ozgowicz wojciech Labisz Krzysztof Division of Constructional and special Materials Division of Materials Processing Technology Management and Computer Techniques in Materials ScienceInstitute of Engineering Materials and BiomaterialsSilesian University of TechnologyKonarskiego St.18A44-100 GliwicePoland

The paper deals with investigations concerning the structure and state of dispersive precipitations of the phases consolidating in the high-strength steel Weldox 1300 after its high temperature thermomechanical *** use of transmission technique of electron microscopy (TEM) mainly the microstructure and morphology of martensite was analysed,as well as the state of dispersive precipitations of carbides and nitrides resulting from microadditives of such alloys as Nb,V,Ti or B,introduced into the *** revealed both a fine lathed and twin structure of the matrix of martensite in the investigated *** means of the method of electron diffraction particles of secondary strengthening phases of the M(C,N) type of a nanocrystalline size could be identified,and also non-metallic oxide inclusions,affecting the mechanism of strengthening of the investigated steel.

关键词： weldox 1300 HSLA steel thermomechanical treatment martensitic steel structural steel

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The Influence of Environmental Factors on the Behavior and Mortality Risk of Polypedates megacephalus Tadpoles

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Asian Herpetological Research 2021年第1期12卷 100-109页

作者： Jakub PACON wojciech KRUSZYNSKI Jaroslaw PACON Department of Genetics Wroclaw University of Environmental and Life SciencesKozuchowska 751-631 WroclawWroclaw 51631Poland Department of Internal Medicine and Clinic of Diseases of Horses Dogs and CatsWroclaw University of Enviromnental and Life SciencesPl.Grunwaldzki 4750-366 WroclawWroclaw 50366Poland

Since tadpoles change their behavior when facing adverse environmental conditions, observing tadpoles in a tank can help detect problems in their ma intena nce. Detecting such a bnormal behavior early, an amphibian breeder can react quickly, by changing the conditions. If quick and appropriate, such a reaction can save unnecessary deaths. The paper presents an experimental study on the behavior of tadpoles of Polypedates megacephalus in various adverse environmental conditions. In addition to a control 25-liter tank, 5-liter tanks with 10 tadpoles each were studied, each having various improper conditions. Observations included the degree of tank exploration by the tadpoles, their mortality, anomalies in swimming behavior, and eating behavior.

关键词： Polypedates megacephalus tadpole mortality the spot-legged tree frog

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Complete Oxidation of Methane over Palladium Supported on Alumina Modified with Calcium,Lanthanum,and Cerium Ions

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Journal of Natural Gas Chemistry 2007年第4期16卷 342-348页

作者： Beata Stasinska wojciech Gac Theophilos Ioannides Andrzej Machocki University of Maria Curie-Sklodowska Faculty of Chemistry Department of Chemical Technology3 Maria Curie-Sklodowska Square20-031 LublinPoland Foundation for Research & Technology-Hellas Institute of Chemical Engineering and High Temperature Chemical Processes(FORTH/ICE-HT) P.O.Box 1414PatrasGR-26500Greece

The activity and thermal stability of Pd/Al2O3 and Pd/（Al2O3＋MOx）（M=Ca, La, Ce） palladium catalysts in the reaction of complete oxidation of methane are presented in this study. The catalyst supports were prepared by sol-gel method and they were dried either conventionally or with supercritical carbon dioxide. Then they were impregnated with palladium nitrate solution. The catalysts with unmodified alumina had a high surface area. The activity and thermal stability of the aluminasupported catalyst was also very high. The introduction of calcium, lanthanum, or cerium oxide into alumina support caused a decrease of the surface area in the way dependent on the support precursor drying method. These modifiers decreased the activity of palladium catalysts, and they required higher temperatures for the complete oxidation of methane than unmodified Pd/Al2O3. The improvement of the palladium activity by lanthanum and cerium support modifier was observed only at low temperatures of the reaction.

关键词： catalytic oxidation of methane palladium catalysts alumina support modification lan- thanum modifier cerium modifier calcium modifier

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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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Effects of feet reflexology versus segmental massage in reducing pain and its intensity,frequency and duration of the attacks in females with migraine：a pilot study

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Journal of Traditional Chinese Medicine 2017年第2期37卷 214-219页

作者： wojciech Kobza Pawel Lizis Halina Romualda Zieba Physiotherapy Cabinet Bielski Collegenamed after Tyszkiewicz Bielsko-Biala 43-300 Poland Department of Education and Health Protection Holycross College Kielce 25-709 Poland Institute of Health Science Pod-hale State Higher Vocational School Nowy Targ 34-400 Po-land

OBJECTIVE:To evaluate the effects of feet reflexology versus segmental massage in reducing pain and its intensity, frequency and duration of the attacks in females suffering from ***:Forty eight females aged 33-58, suffering from migraine for 2 to 10 years were included in this study from November 2013 to *** study protocol was carried out in Department of Chronic Diseases at the Regional Hospital in *** the reflexology group(RG) the patients received a series of 10 treatments 2 times per week; in the segmental massage group(SMG) the patients received a series of 15 treatments 3 times per *** during migraine attacks was assessed using the visual analog scale(VAS), and headache features such as intensity(IA), frequency(FA) and duration(DA) of attacks were assessed before the treatment, just after the treatment, 3months after the ***:All variables(VAS, IA, FA and DA) decreased within RG and SMG 3 months after the treatment in compare with the baseline values, and the differences were statistically *** differences between groups were also statistically ***:Feet reflexology and segmental massage provide a safe alternative for the pharmacological treatment of *** patients with migraine obtain significant health benefits with feet reflexology.

关键词：周期性偏头痛混乱按摩视觉模拟规模试验性项目

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Why on the snow？ Winter emergence strategies of snow-active Chironomidae （Diptera） in Poland

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Insect Science 2016年第5期23卷 754-770页

作者： Agnieszka Soszynska-Maj Lauri Paasivirta wojciech Gilka Faculty of Biology and Environmental Protection Department of Invertebrate Zoology and Hydrobiology University of Lodz Banacha 12116 90-237 Lodz Poland Ruuhikoskenkatu 17 B 5 FIN-24240 Salo Finland Department of Invertebrate Zoology and Parasito- logy University of Gdansk Wita Stwosza 59 80-308 Gdansk Poland

A long-term study of adult non-biting midges （Chironomidae） active in winter on the snow in mountain areas and lowlands in Poland yielded 35 species. The lowland and mountain communities differed significantly in their specific composition. The mountain assemblage was found to be more diverse and abundant, with a substantial contribution from the subfamily Diamesinae, whereas Orthocladiinae predominated in the lowlands. Orthocladius wetterensis Brundin was the most characteristic and superdominant species in the winter-active chironomid communities in both areas. Only a few specimens and species of snow-active chironomids were recorded in late autumn and early winter. The abundance ofchironomids peaked in late February in the mountain and lowland areas with an additional peak in the mountain areas in early April. However, this second peak of activity consisted mainly of Orthocladiinae, as Diamesinae emerged earliest in the season. Most snow-active species emerged in mid- and late winter, but their seasonal patterns differed between the 2 regions as a result of the different species composition and the duration of snow cover in these regions. Spearman＇s rank correlation coefficient tests yielded positive results between each season and the number of chironomid individuals recorded in the mountain area. A positive correlation between air temperature, rising to ＋3.5 ~C, and the number of specimens recorded on the snow in the mountain community was statistically significant. The winter emergence and mate-searching strategies of chironomids are discussed in the light of global warming, and a brief compilation of most important published data on the phenomena studied is provided.

关键词： Chironomidae Diamesinae Diptera Orthocladiinae snow activity weather influence winter emergence

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