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Effects of different external carbon sources and electron acceptors on interactions between denitrification and phosphorus removal in biological nutrient removal processes

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2018年第4期19卷 305-316页

作者： Xiang HU Dominika SOBOTKA krzysztof CZERWIONKA Qi ZHOU Li XIE Jacek MAKINIA Anhui Guozhen Environmental Protection Sci.& Tech.Co. Ltd. Faculty of Civil and Environmental Engineering Gdansk University of Technology State Key Laboratory of Pollution Control and Resources Reuse Tongji University

The effects of two different external carbon sources （acetate and ethanol） and electron acceptors （dissolved oxygen, nitrate, and nitrite） were investigated under aerobic and anoxic conditions with non-acclimated process bi- omass from a full-scale biological nutrient removal-activated sludge system. When acetate was added as an external carbon source, phosphate release was observed even in the presence of electron acceptors. The release rates were 1.7, 7.8, and 3.5 mg P/（g MLVSS.h）（MLVSS： mixed liquor volatile suspended solids）, respectively, for dissolved oxygen, nitrate, and nitrite. In the case of ethanol, no phosphate release was observed in the presence of electron acceptors. Results of the experiments with nitrite showed that approximately 25 mg NO2-N/L of nitrite inhibited anoxic phosphorus uptake regardless of the concentration of the tested external carbon sources. Furthermore, higher deni- trification rates were obtained with acetate （1.4 and 0.8 mg N/（g MLVSS.h）） compared to ethanol （1.1 and 0.7 mg N/ （g MLVSS.h）） for both anoxic electron acceptors （nitrate and nitrite）.

关键词： Biological nutrient removal (BNR) Denitriflcation Enhanced biological phosphorus removal (EBPR) External carbon source Electron acceptor

Developmental Toxicity in Mice Following Paternal Exposure to Di-N-Butyl-Phthalate (DBP)

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Biomedical and Environmental Sciences 2011年第5期24卷 569-578页

作者： Malgorzata M.DOBRZY SKA Ewa J.TYRKIEL krzysztof A.PACHOCKI Department of Radiation Protection and Radiobiology National Institute of Public Health-National Institute of Hygiene00-791 WarsawPoland Department of Environmental Toxicology National Institute of Public Health-National Institute of Hygiene00-791 WarsawPoland

Objective The aim of the present study was to investigate the effects of paternal Di‐N‐butyl‐phthalate （DBP） exposure pre‐ and postnatally on F1 generation offspring,and prenatally on F2 generation *** Male mice were exposed to either 500 mg/kg or 2 000 mg/kg of DBP for 8 weeks,and mated with non‐exposed ***‐quarters of the females were sacrificed a day prior to parturition,and examined for the number of living and dead implantations,and incidence of gross *** from the remaining females were assessed for developmental markers,growth parameters,as well as sperm quantity and *** There were no changes in the fertility of parents and in intrauterine development of the *** of DBP‐exposed males demonstrated growth‐*** paternal exposure to 500 mg/kg bw of DBP,there were almost twice the number of males than females born in the F1 generation.F1 generation females had a 2.5‐day delay in vaginal *** exposure to 2 000 mg/kg bw of DBP increased the incidence of sperm head malformations in F1 generation males;however,there were no changes in the fertility and viability of foetuses in the F2 *** Paternal DBP exposure may disturb the sex ratio of the offspring,delay female sexual maturation,and deteriorate the sperm quality of F1 generation males.

关键词： Di‐n‐butyl phthalate Paternal exposure Pre‐ and postnatal effects Male‐mediated developmental toxicity

Framework design guidelines: conventions, idioms, and patterns for reusable .NET libraries 英文版

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The GeoLink knowledge graph

丛书名：图灵程序设计丛书.微软技术系列

2010年

作者： (美) krzysztof Cwalina Brad Abrams

本书关注直接影响框架可编程能力的设计问题, 为框架设计师和广大开发人员设计高质量的软件提供了权威的指南, 这一版更新至.NET 3.5。书中内容涉及框架设计的基本原则和规范, 常用设计惯用法, 为命名空间、类型、成员等框架各部分命名... 详细信息

ISBN: (纸本)9787115214454;9787894798046

本书关注直接影响框架可编程能力的设计问题, 为框架设计师和广大开发人员设计高质量的软件提供了权威的指南, 这一版更新至.NET 3.5。书中内容涉及框架设计的基本原则和规范, 常用设计惯用法, 为命名空间、类型、成员等框架各部分命名的规范, 框架中常用设计模式的规范等。

关键词： Microsoft .NET Framework Application program interfaces (Computer software

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Big Earth Data 2018年第2期2卷 131-143页

作者： Michelle Cheatham Adila Krisnadhi Reihaneh Amini Pascal Hitzler krzysztof Janowicz Adam Shepherd Tom Narock Matt Jones Peng Ji Department of Computer Science and Engineering Wright State UniversityDaytonOHUSA Department of Computer Science Universitas IndonesiaDepokIndonesia Geography Department University of California at Santa BarbaraSanta BarbaraCAUSA Woods Hole Oceanographic Institution Woods HoleMAUSA Mathematics/Physics Department Notre Dame of Maryland UniversityBaltimoreMDUSA National Center for Ecological Analysis and Synthesis Santa BarbaraCAUSA Lamont-Doherty Earth Observatory Columbia UniversityPalisadesNYUSA

GeoLink has leveraged linked data principles to create a dataset that allows users to seamlessly query and reason over some of the most prominent geoscience metadata repositories in the United *** GeoLink dataset includes such diverse information as port calls made by oceanographic cruises,physical sample meta-data,research project funding and staffing,and authorship of technical *** data has been published according to best practices for linked data and is publicly available via a SPARQL Protocol and RDF Query Language(SPARQL)end point that at present contains more than 45 million Resource Description Framework(RDF)triples together with a collection of ontologies and geo-visualization *** article describes the geoscience datasets,the modeling and publication process,and current uses of the *** focus is on providing enough detail to enable researchers,application developers and others who wish to lever-age the GeoLink data in their own work to do so.

关键词： Geoscience data oceanographic data knowledge graph linked data ontology

Binary Relations between Magnitudes of Different Dimensions Used in Material Science Optimization Problems Pseudo-State Equation of Soft Magnetic Composites

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Materials Sciences and Applications 2014年第14期5卷 1040-1047页

作者： krzysztof Z.Sokalski Bartosz Jankowski Barbara Slusarek Institute of Computer Sciences Czestochowa University of TechnologyCzestochowaPoland Tele and Radio Research Institute WarszawaPoland

New algorithm for optimizing technological parameters of soft magnetic composites has been derived on the base of topological structure of the power loss characteristics. In optimization magnitudes obeying scaling, it happens that one has to consider binary relations between the magnitudes having different dimensions. From mathematical point of view, in general case such a procedure is not permissible. However, in a case of the system obeying the scaling law it is so. It has been shown that in such systems, the binary relations of magnitudes of different dimensions is correct and has mathematical meaning which is important for practical use of scaling in optimization processes. The derived structure of the set of all power loss characteristics in soft magnetic composite enables us to derive a formal pseudo-state equation of Soft Magnetic Composites. This equation constitutes a relation of the hardening temperature, the compaction pressure and a parameter characterizing the power loss characteristic. Finally, the pseudo-state equation improves the algorithm for designing the best values of technological parameters.

关键词： Soft Magnetic Composites Scaling Binary Relations Pseudo-State Equation

On Return Periodof the Largest Historical Flood

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Journal of Geoscience and Environment Protection 2014年第3期2卷 144-152页

作者： Witold G.Strupczewski krzysztof Kochanek Ewa Bogdanowicz Institute of Geophysics Polish Academy of SciencesKsięcia JanuszaWarsawPoland Institute of Meteorology and Water Management PodlesnaWarsawPoland

The use of nonsystematic flood data for statistical purposes depends on reliability of assessment both flood magnitudes and their return period. The earliest known extreme flood year is usually the beginning of the historical record. Even though the magnitudes of historic floods are properly assessed, a problem of their retun periods remains unsolved. Only largest flood (XM) is known during whole historical period and its occurrence carves the mark of the beginning of the historical period and defines its length (L). So, it is a common practice of using the earliest known flood year as the beginning of the record. It means that the L value selected is an empirical estimate of the lower bound on the effective historical length M. The estimation of the return period of XM based on its occurrence, i.e. , gives the severe upward bias. Problem is to estimate the time period (M) representative of the largest observed flood XM. From the discrete uniform distribution with support of the probability of the L position of XM one gets ?which has been taken as the return period of XM and as the effective historical record length. The efficiency of using the largest historical flood (XM) for large quantile estimation (i.e. one with return period T = 100 years) has been assessed using maximum likelihood (ML) method with various length of systematic record (N) and various estimates of historical period length ?com- paring accuracy with the case when only systematic records alone (N) are used. The i-th simula- tion procedure incorporates systematic record and one largest historic flood (XMi) in the period M which appeared in the Li year backward from the end of historical period. The simulation result for selected distributions, values of their parameters, different N and M values are presented in terms of bias (B) and root mean square error (RMSE) of the quantile of interest and widely discussed.

关键词： Flood Frequency Analysis Historical Information Error Analysis Maximum Likelihood Monte Carlo Simulations

Continuous Reaction Crystallization of Struvite in a DTM Type Crystallizer With Jet Pump of Ascending Suspension Flow in a Mixing Chamber–Kinetic Approach of the Process

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Journal of Crystallization Process and Technology 2012年第3期2卷 96-104页

作者： Agata Mazienczuk Andrzej Matynia krzysztof Piotrowski Boguslawa Wierzbowska Silesian University of Technology Department of Chemical & Process Engineering Gliwice Poland Wroclaw University of Technology Faculty of Chemistry Wroclaw Poland

Reaction crystallization of struvite in water solutions containing 0.20 mass % of phosphate(V) ions by magnesium and ammonium ions addition was investigated experimentally. Process was carried out in DTM type crystallizer with liquid jet pump device in 298 K assuming stoichiometric conditions. Struvite crystals of mean size Lm 5.2-23.0 μm were produced depending on pH (9-11) and mean residence time of suspension in a crystallizer τ (900-3600 s). Under these conditions linear growth rate of struvite crystals (SIG MSMPR kinetic model) decreased 2-time with the increase in pH and 3-time with the elongation of mean residence time of crystal suspension from 7.11×10-9 m/s (pH 9, τ900 s) to 1.65×10-9 m/s (pH 11, τ3600 s). Nucleation rate varied within the 7.9×108-1.8×1010 1/(sm3) limits. Struvite product of maximal linear size exceeded 100 μm with 10 vol. % of < 3 μm fraction corresponded to pH 9 and τ3600 s.

关键词： Struvite Crystal Size Distribution (CSD) Reaction Crystallization Kinetics Continuous DTM Type Crystallizer Jet Pump

Determining the Thermal Conductivity in Walls of Cast Iron Castings by the Ultrasound Technique

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材料科学与工程（中英文A版） 2021年第4期11卷 120-128页

作者： Jerzy Stanisław Zych Marcin Myszka krzysztof Piotrowski Faculty of Foundry Engineering AGH University of Science and TechnologyReymonta 23Cracow 30-059Poland Krakodlew S.A. Ujastek 130-969 CracowPoland

Research results concerning the application of ultrasound technique for determining the averaged thermal conductivity in walls of castings produced of cast iron(solidifying in a steady system)containing carbon precipitates in a graphite form,are presented in the hereby *** concern castings of unalloyed cast *** influence of the form of graphite precipitates on the cast iron thermal conductivity as well as on the propagation velocity of the ultrasound wave,including the longitudinal wave velocity CL,was investigated in the *** influence of the graphite form,described by the shape indicator(f),on the thermal conductivity(l)(determined on samples by the steady heat flow method)as well as the influence of this indicator(f)on the wave propagation velocity(CL),was investigated.A series of melts of cast iron,of the near eutectic chemical composition,were *** introduced in a wide range,allowed obtaining various graphite forms from flake,via mixed,vermicular to ***:l=f(CL),CL=f(f)were determined and at the final phase the empirical dependencel=f(CL)was also *** thermal conductivity and ultrasound wave velocity were tested on the same *** thermal conductivity coefficient of cast iron(l)was changing in a wide range from approximately 32 to 46 W/s·m,while the wave velocity CL respectively:from approximately 4,300 to 5,800 m/*** empirical dependencel=f(CL),determined in the described variability ranges,is of a linear character and the correlation level equals:R2=*** validation of the experimental results was performed on cast iron castings of slag ladles,since they are required to be of a good thermal *** possibility of assessing the thermal conductivity directly in walls of such castings by means of non-destructive ultrasound method,was *** real thermal conductivity determined in the walls of the castings is used to simulate the heating and cooling process of slag ladles

关键词： Thermal conductivity ultrasounds cast iron research tools.

Effect of Copper (II) Ions on Quality of Struvite Produced in Continuous Reaction Crystallization Process at the Magnesium Ions Excess

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Advances in Chemical Engineering and Science 2013年第4期3卷 1-6页

作者： Nina Hutnik Boguslawa Wierzbowska krzysztof Piotrowski Andrzej Matynia Silesian University of Technology Department of Chemical & Process Engineering M. Strzody Gliwice Poland Wroclaw University of Technology Faculty of Chemistry Wybrzeze Wyspianskiego Wroclaw Poland

The research results concerning continuous removal of phosphate (V) ions from solutions containing 1.0 or 0.20 mass % of phosphate (V) ions and 0.2 or 0.5 mg/kg of copper (II) ions using magnesium and ammonium ions addition are presented. Continuous reaction crystallization of struvite MgNH4PO4 × 6H2O ran both under stoichiometric conditions and at 20% excess of magnesium ions (pH 9, t 900 s). It was concluded, that presence of copper (II) ions in a process system influenced product quality moderately advantageously. Mean size of struvite crystals enlarged by ca. 6% only. Lower concentration of phosphate (V) ions and excess of magnesium ions caused, that products of ca. 9% - 13% larger crystal mean size (up to ca.40mm) were removed from the crystallizer. Presence of struvite crystals and copper (II) hydroxide were detected analytically in the products (Cu in a product varied from 6 to 90 mg/kg). Presence of copper (II) ions favored crystallization of struvite in the form of tubular crystals.

关键词： Struvite Phosphate(V) Ions Copper Ions Continuous Reaction Crystallization DT MSMPR Crystallizer Crystal Size Distribution Product Quality