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Optimization of growth medium for microbially induced calcium carbonate precipitation(MICP) treatment of desert sand

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Journal of Arid Land 2023年第7期15卷 797-811页

作者： monika DAGLIYA Neelima SATYAM Ankit GARG Department of Civil Engineering Indian Institute of TechnologyIndore 453552India Guangdong Engineering Center for Structure Safety and Health Monitoring Shantou UniversityShantou 515063China

Wind-induced sand erosion is a natural process, and can have several negative impacts on human health, environment, and economy. To mitigate the wind-induced sand erosion, an environmental friendly technique that helps to bind soil particles is desirable. The microbially induced calcium carbonate precipitation(MICP) treatment has lately become renowned and a viable alternative to enhance the binding of sand particles(especially against wind erosion). The efficiency of Sporosarcina pasteurii bacteria in inducing calcite formation can be influenced by various factors, including the type of growth media used for bacterial culture. Most of the studies have mainly validated the efficiency of S. pasteurii bacteria usually under single growth media for the MICP treatment. However, the efficiency of S. pasteurii under different growth media on calcite formation is rarely explored. The current study explores the effect of *** bacteria on calcite formation under the presence of three different growth media, namely,molasses(MS), tryptic soy broth(TB), and nutrient broth(NB). The three growth media have been applied in the laboratory with and without bacterial solution(control samples). Altered cementation media concentrations(0.5 and 1.0 M) with different pore volumes(PVs), namely, 0.25, 0.50, and 1.00 PV were used in sand-filled tubes for 7 and 14 treatment cycles(1 cycle=24 h). The pH and EC were measured for 12-h period in every 2 h interval, to monitor values at the time of treatment at room temperature. The calcite precipitation was confirmed using SEM(scanning electron microscope), PXRD(powder X-ray diffraction), and calcimeter tests. It was observed that MS generates lower calcite precipitation as compared with NB and TB. However, MS has the advantage of being more economical and abundant(waste product from sugar mills and refineries) as compared with other growth media(NB and TB). It was observed that the minimum and the maximum calcite precipitation using MS i

关键词： growth media molasses tryptic soy broth nutrient broth S.pasteurii calcium carbonate

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Photoluminescence and electrochemiluminescence studies of chosen rare earths systems

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Journal of Rare Earths 2008年第2期26卷 192-197页

作者： Stefan Lis Slawomir But Krzysztof Staninski monika Jesiolowska Department of Rare Earths Faculty of Chemistry Adam Mickiewicz University Grunwaldzka 6

Eu（Ⅲ） complexes with chosen Keggin polyoxomatalates, POM, containing organic counter cations （tetrabutylarnmonium, tetrabutylphosphonium, triphenylethylphosphonium）, were synthesized, and their photophysical properties were studied. The synthesized complexes had the general formula of XnH5-n[EuSiW11O39], formulated based on the results of elemental and thermogravimetric analysis and FTIR spectroscopy. The photophysical properties of the obtained compounds were investigated using photoluminescence and electrochemiluminescence, ECL, methods in solutions and solids. The most intense luminescence of Eu（Ⅲ） was observed for the complexes with tetrabutylarnmonium cations. After the addition of phenanthroline to the XnH5-n[EuSiW11O39] solutions, a large increase in the Eu（Ⅲ） luminescence intensity and a lengthening of its luminescence lifetime were observed as a result of the formation of ternary complexes. Attempts to apply ECL as a method of light emission by generating species capable of forming excited states in Ln/POMs, i.e., Tb（Ⅲ） and Eu（Ⅲ） in the Na9EuW10O36 and Na9TbW10O36 complexes, were made. The influence of the POM complexes on the ECL was also tested using the Tb/EDDHA （EDDA=ethylenediamine di（o-hydroxyphenylacetic acid）） complex, which is effective in generating ECL.

关键词： Ln(Ⅲ) luminescence electrochemiluminescence polyoxometalates complexes rare earths

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Quantifying the impacts of spatiotemporal land use and land cover changes on soil loss across agroecologies and slope categories using GIS and RUSLE model in Zoa watershed,southwest Ethiopia

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Ecological Processes 2023年第1期12卷 344-364页

作者： Ginjo Gitima Menberu Teshome Meseret Kassie monika Jakubus Department of Geography and Environmental Studies University of GondarP.O.Box 196GondarEthiopia Department of Geography and Environmental Studies Debre Tabor UniversityP.O.Box 272Debre TaborEthiopia Department of Soil Science and Microbiology Poznan University of Life SciencesUl.Szydłowska 5060-656 PoznanPoland

Background Soil erosion in Ethiopian highlands is highly consistent with land use/land cover(LULC)changes that are associated with deforestation and a decline in ***,identifying soil erosion-prone areas and quantifying soil loss in rugged terrains and various agroecologies due to LULC changes have not been dedicated to scientific ***,we quantified the impacts of spatiotemporal LULC changes on soil loss across agroecologies and slope categories using GIS and RUSLE model from 1985 to 2021 in Zoa watershed,southwest ***,prioritizing erosion severity risks at sub-watersheds and quantifying temporal sediment yield is essential for better conservation *** images,rainfall,Digital Elevation Model,and soil data were obtained from field observations and secondary *** Bareland and farmland have been expanding at the expense of other land use *** annual soil loss in the watershed ranged from 0 to 113.21 t ha^(-1) year^(-1),0 to 163.16 t ha^(-1) year^(-1),and 0 to 194.58 t ha^(-1) year^(-1)with a mean annual soil loss of 21.07,29.35 and 40.93 t ha^(-1) year^(-1) in 1985,2000,and 2021,*** LULC classes,the highest soil loss was generated from bareland(31.73 t ha^(-1) year^(-1))and farmland(27.08 t ha^(-1) year^(-1))in 1985 later upsurged to 35.52 t ha^(-1) year^(-1)and 59.91 t ha^(-1) year^(-1) in 2021,respectively,due to the maximum susceptibility of soil erosion risks from unprotected *** results also revealed that the lowland agroecology generated the highest mean soil loss of 24.05 t ha^(-1) year^(-1)in 1985,39.74 t ha^(-1) year^(-1) in 2000,and increased to 57.55 t ha^(-1) year^(-1)in *** the slope categories,the highest and most excruciating soil loss was engendered from steep(35.55–60.78 t ha–1 year–1)and very steep(52.48–72.69 t ha^(-1) year^(-1))slope terrains during 1985–*** northwestern part of the watershed is the most erosion-prone area which is now ex

关键词： Soil erosion RUSLE Land use/land cover Slope gradient Tolerable soil loss Soil conservation

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Impact of environmental factors on the sampling rate ofβ-blockers and sulfonamides from water by a carbon nanotube-passive sampler

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Journal of Environmental Sciences 2021年第3期33卷 413-427页

作者： Klaudia Godlewska Aleksandra Jakubus Piotr Stepnowski monika Paszkiewicz Department of Environmental Analysis Faculty of ChemistryUniversity of Gdanskul.Wita Stwosza 63Gdansk 80-308Poland

Passive techniques are a constantly evolving approach to the long-term monitoring of micropollutants,including pharmaceuticals,in the aquatic *** paper presents,for the first time,the calibration results of a new CNTs-PSDs(carbon nanotubes used as a sorbent in passive sampling devices)with an examination of the effect of donor phase salinity,water pH and the concentration of dissolved humic acids(DHAs),using both ultrapure and environmental *** rates(R_(s))were determined for the developed kinetic *** has been observed that the impact of the examined environmental factors on the R_(s) values strictly depends on the type of the *** the case ofβ-blockers,the only environmental parameter affecting their uptake rate was the salinity of water.A certain relationship was noted,namely the higher the salt concentration in water,the lower the Rs values ofβ-*** the case of sulfonamides,water salinity,water pH 7-9 and DHAs concentration decreased the uptake rate of these compounds by *** determined Rs values differed in particular when the values obtained from the experiments carried out using ultrapure water and environmental waters were *** general conclusion is that the calibration of novel CNTs-PSDs should be carried out under physicochemical conditions of the aquatic phase that are similar to the environmental matrix.

关键词： Carbon nanotubes Passive sampling Pharmaceuticals Sampling rates(R_s)

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Trajectory analysis at intersections for traffic rule identification

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Geo-Spatial Information Science 2021年第1期24卷 75-84,I0010页

作者： Chenxi Wang Stefania Zourlidou Jens Golze monika Sester Institute of Cartography and Geoinformatics Leibniz University HannoverHannoverGermany

In this paper,we focus on trajectories at intersections regulated by various regulation types such as traffic lights,priority/yield signs,and right-of-way *** test some methods to detect and recognize movement patterns from GPS trajectories,in terms of their geometrical and spatio-temporal *** particular,we first find out the main paths that vehicles follow at such *** then investigate the way that vehicles follow these geometric paths(how do they move along them).For these scopes,machine learning methods are used and the performance of some known methods for trajectory similarity measurement(DTW,Hausdorff,and Fréchet distance)and clustering(Affinity propagation and Agglomerative clustering)are compared based on clustering ***,the movement behavior observed at six different intersections is analyzed by identifying certain movement patterns in the speed-and time-profiles of *** show that depending on the regulation type,different movement patterns are observed at *** finding can be useful for intersection categorization according to traffic *** practicality of automatically identifying traffic rules from GPS tracks is the enrichment of modern maps with additional navigation-related information(traffic signs,traffic lights,etc.).

关键词： Traffic rules traffic regulators GPS trajectories intersection classification speed-profiles clustering similarity measures

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Corrosion Resistance of AZ91 Magnesium Alloy after Laser Remelting Treatment

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Journal of Wuhan University of Technology(Materials Science) 2016年第5期31卷 1075-1080页

作者： STRZELECKA monika IWASZKO Jozef MALIK Marcin A Czestochowa University of Technology 42-200 Czestochowa Poland

The main objective of the study was the modification of the surface layer of magnesium alloy by the COlaser. The studied material was the commercial AZ91 magnesium alloy. The effectiveness of the alternations caused by the remelting process was verified on the basis of microscopic observation and corrosion investigations, i e, recording of potentiodynamic polarization curves, electrochemical noise measurements and hydrogen evolution rate measurements. For the adopted range of the treatment parameters, favourable changes were observed in the surface layer such as the refinement of structure and more uniform arrangement of individual phases. As a consequence of those favourable structural changes the improvement of the corrosion resistance of the alloy was achieved in comparison to its non-remelted equivalent. For the treated material corrosion rates expressed as corrosion current densities were at least three times lower than the appropriate values for the untreated alloy comparing them for the same period of samples immersion in the test solution. The obtained results have confirmed the effectiveness of the applied surface treatment resulting in favourable changes in the structure and corrosion properties of the AZ91 magnesium alloy.

关键词： magnesium alloy CO_2 laser surface layer modification corrosion

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Cut stumps vs broken stumps:Does it make any difference in the maintenance of plant and lichen biodiversity in Central European mountain forests?

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Forest Ecosystems 2024年第4期11卷 457-468页

作者： monika Staniaszek-Kik Jan Zarnowiec Damian Chmura Department of Geobotany and Plant Ecology University of Lodz90-237LodzPoland Institute of Nature Protection and Engineering University of Bielsko-BialaWillowa Str 243-309Bielsko-BiałaPoland

Fxcessive forest exploitation significantly contributes to land degradation and the creation of human-made *** are sometimes ignored in studies on the biodiversity of coarse woody *** investigated whether the type of stump,*** stumps(naturally created)and cut stumps(formed during forestry operations)had an impact on the species composition and species diversity as well as due to this fact they can be characterized by plant *** research covered 728 spruce stumps(287 broken and 441 cut stumps)that were inhabited by lichens,liverworts,mosses and vascular plants in mountain forest belt(Karkonosze Mts.,Poland).The following types of microhabitats were included in the research:the upper surface and the lateral surface of a stump with both bark and *** are statistically significant compositional differences between the two types of stumps,which was demonstrated by ordination analyses and indicator species *** to the generalized linear models,the probability of occurrence increases in cut stumps in case of liverworts and vascular plants and also along the decomposition *** generalized linear mixed-effects model showed that there was a higher species richness of liverworts,mosses and vascular plants on the cut stumps and less drier but the reverse situation was in *** generalized additive models for their cover showed similar *** all of the taxonomic groups were affected by altitude both in terms of species composition and total cover on the *** concluded that cut stumps are an important type of deadwood for biodiversity and provide a convenient habitat,especially for many lichens and bryophytes.

关键词： Coarse woody debris Spruce stumps Epixylic flora Plant indicators

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PLANTAGO PSYLLIUM-GRAFTED-POLYACRYLONITRILE:SYNTHESIS,CHARACTERIZATION AND ITS USE FOR SOLID REMOVAL FROM SEWAGE WASTEWATER

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Chinese Journal of Polymer Science 2005年第1期23卷 113-118页

作者： Anuradha Mishra Alpa Yadav monika Agarwal Rajani Srinivasan Department of Chemistry Institute of Engineering and Technology.CSJM UniversityKanpur-208 024IndiaDepartment of ChemistryInstitute of Engineering and Technology.CSJM UniversityKanpur-208 024IndiaDepartment of ChemistryInstitute of Engineering and Technology.CSJM UniversityKanpur-208 024India

Plantago psyllium mucilage(PSY),an anionic natural polysaccharide consisting of pentosan and uronic acidobtained from the seeds of Plantago psyllium(Plantago family),was grafted with acrylonitrile(AN).Graft copolymers wereprepared by ceric ion initiated solution polymerization technique and were characterized by FT-IR spectroscopy,scanningelectron microscopy and differential scanning *** copolymers are good flocculating agents for removal ofsuspended(SS)and total dissolved solid(TDS)in sewage wastewater *** effects of copolymer dose,pH andcontact time on flocculation capacity of one selected copolymer sample were studied by jar test *** suitable pHrange for maximum solid removal was 7.0 to 9.2 and the optimum copolymer dose was 1.2 mg/*** overall process forsolid removal took 4 h.X-ray diffraction(XRD)patterns of grafted copolymer,PSY grafted polyacrylonitrile(PSY-g-PAN)and solid waste,before and after treatment are used to suggest the interaction of the solid waste with PSY-g-PAN copolymer.

关键词： Plantago psyllium-g-polyacrylonitrile(PSY-g-PAN) Flocculant X-ray Jar test Sewage wastewater.

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Optimality Conditions and Duality for Nondifferentiable Multiobjective Semi-Infinite Programming Problems with Generalized(C,α,ρ,d)-Convexity

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Journal of Systems Science & Complexity 2015年第1期28卷 47-59页

作者： MISHRA Shashi Kant JAISWAL monika HOAI AN Le Thi Department of Mathematics Banaras Hindu University Laboratory of Theoretical and Applied Computer Science LITA UFR MIMUniversity of Lorraine

This paper obtains sufficient optimality conditions for a nonlinear nondifferentiable multiobjective semi-infinite programming problem involving generalized(C,α,ρ,d)-convex *** authors formulate Mond-Weir-type dual model for the nonlinear nondifferentiable multiobjective semiinfinite programming problem and establish weak,strong and strict converse duality theorems relating the primal and the dual problems.

关键词： Duality generalized convexity optimality conditions semi-infinite programming.

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Auxetic Woven Fabrics—Pores' Parameters Observation

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Journal of Donghua University(English Edition) 2013年第5期30卷 416-420页

作者： VYSANSKA monika VINTROVA Petra Department of Textile Technologies Faculty of Textile EngineeringTechnical University of Liberec Department of Design Faculty of Textile EngineeringTechnical University of Liberec

Manufacturing of a macro-scale helix auxetic yarn(HAY)was described. Consequently areal woven fabric and three kinds of woven fabrics various in weaves were introduced respectively. Their expected auxetic effect( assured by double helix yarn) was tested through the Poisson's ratio value(for auxetic structure is negative).Other observed parameters talked about variation in woven fabric porosity and the pores' parameters during the sample *** of this non-standard test( connection between dynamometer and image analysis) was also introduced. The differences among observed parameters were evaluated and conclusions for three types of woven fabrics were determined. It was found that less auxetic behavior caused less porosity. Less auxetic structure( satin) with longer floating threads embodies bigger pores' size and less circularity. The plain pattern has the greatest porosity but the smallest pores; the satin pattern behaves by contraries.

关键词： auxetic behavior helical auxetic yarn(HAY) pores woven fabric

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