检索结果-南通市图书馆

Potential Renaturalisation of Lakes as An Element Building Up Water Resources： An Example of Mosina Lake, Poland

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Geographical Science 2017年第1期27卷 8-12页

作者： ptak mariusz Institute of Physical Geography and Environmental Planning Adam Mickiewicz University Dziegielowa 27 Poznan 61-680 Poland

Water deficits observed in many regions of the world make it necessary to implement measures intended to improve this situation. Poland is one of the countries with the poorest water resources in Europe due to its natural conditions and human impact. As a result of land reclamation carried out over decades, many elements of its hydrographic system have been changed, and some of them, like lakes, have disappeared altogether. In the days of the socio-economic transformation and more frequent extreme events, what seems worth considering is the renaturalisation of non-existing lakes, an idea presented in this paper on a selected example.

关键词： environment transformation drainage water resources human activity Mosina Lake Poland

Long-term daily water temperatures unveil escalating water warming and intensifying heatwaves in the Odra river Basin,Central Europe

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2024年第6期15卷 321-335页

作者： Jiang Sun Fabio Di Nunno mariusz Sojka mariusz ptak Quan Zhou Yi Luo Senlin Zhu Francesco Granata College of Hydraulic Science and Engineering Yangzhou UniversityYangzhouChina Department of Civil and Mechanical Engineering(DICEM) University of Cassino and Southern LazioVia Di Biasio4303043CassinoFrosinoneItaly Department of Land Improvement Environmental Development and Spatial ManagementPoznanUniversity of Life SciencesPia˛tkowska 94E60649 PoznanPoland Department of Hydrology and Water Management Adam Mickiewicz UniversityB.Krygowskiego 1061-680 PoznanPoland GIS Technology Research Center of Resource and Environment in Western China Yunnan Normal UniversityKunmingChina

Water temperature is a critical indicator and weathervane of aquatic ***,the vast majority of rivers lack long-term continuous and complete water temperature *** this study,ensemble models by combining NARX(nonlinear autoregressive network with exogenous inputs)and air2stream were used to reconstruct daily river water temperatures for 27 hydrological stations in the Odra River Basin,one of the largest river systems in *** each hydrological station,both the NARX and air2stream models were calibrated and validated,and the better-performed model was selected to reconstruct daily river water temperatures from 1985 to *** results showed that hybrid modeling by combining NARX and air2stream is promising for reconstructing daily river water *** on the reconstructed dataset,annual and seasonal trends of water temperature and characteristics of river heatwaves were *** results indicated that annual river water temperatures showed a consistent warming trend over the past 40 years with an average warming rate of 0.315C/*** river water temperatures indicated that summer warms faster,followed by autumn and spring,and winter river water temperatures showed an insignificant warming *** heatwaves are increased in frequency,duration,and intensity in the Odra River Basin,and 6 out of 27 hydrological stations have river heatwaves categorized as‘severe’and‘extreme’,suggesting that mitigation measures are needed to reduce the impact of climate warming on aquatic ***,results showed that air temperature is the major controller of river heatwaves,and river heatwaves tend to intensify with the warming of air temperatures.

关键词： River water temperature Ensemble modeling Annual variation Seasonal pattern River heatwaves

Water level changes in Polish lakes during 1976–2010

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2016年第1期26卷 83-101页

作者： Dariusz WRZESI?SKI mariusz ptak Institute of Physical Geography and Environmental Planning Adam Mickiewicz University

The paper presents the analysis of tendencies in water level changes in 32 lakes in Poland during 1976–*** of monthly,seasonal,and annual precipitation and air temperature for 9 meteorological stations were also *** trend analysis for all of the studied series of water levels in lakes showed high spatial and temporal *** of annual water levels in the case of 6 lakes showed statistically significant increasing tendencies,and in 7 lakes,significant decreasing *** of annual amplitudes in the majority of lakes(22) showed a decreasing trend,but they were statistically significant only in three *** tendencies for air temperature fluctuations are more statistically significant than *** key role in determining water level changes is played by local factors,particularly including human economic activity,obscuring the effect of natural factors on water level *** paper describes cases of changes in water levels in lakes under anthropopressure related to among others: agricultural irrigations,hydropower infrastructure,water transfers,navigation,or mining.

关键词： lake-level trends lake-level regime Mann-Kandell Test climate change human activity

Causes of Lake Area Changes in Poland

在线全文

学校读者我要写书评

暂无评论

Journal of Resources and Ecology 2011年第2期2卷 175-180页

作者： Adam CHOINSKI Agnieszka LAWNICZAK mariusz ptak Leszek SOBKOWIAK 亚当密茨凯维奇大学自然地理与环境规划研究所波兹南大学生命科学学院生态学与农业环境保护研究室

The northern part of Poland is occupied by numerous lakes formed during the last glaciation as a result of the Scandinavian ice sheet. Studies carried out in the lake district areas show progressive reduction of the surface area of the lakes, which leads to their eventual disappearance. The paper discusses the degree of the observed changes and points out main natural and anthropogenic factors influencing changes of lake area in Poland, including climate change, depth of lake basins, biomass growth, deforestation, hydrotechnical works, use of fertilizers and discharge of wastewater.

关键词： Northern Poland lake districts lake area changes natural factors anthropogenic factors

Tannic acid and saponin for removing arsenic from brownfield soils: Mobilization, distribution and speciation

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2014年第4期26卷 855-864页

作者： Zygmunt mariusz Gusiatin Department of Environmental Biotechnology University of Warmia and Mazury

Plant biosurfactants were used for the first time to remove As and co-existing metals from brownfield soils. Tannic acid （TA）, a polyphenol, and saponin （SAP）, a glycoside were tested. The soil washing experiments were performed in batch conditions at constant biosurfactant concentration （3%）. Both biosurfactants differed in natural pH, surface tension, critical micelle concentration and content of functional groups. After a single washing, TA （pH 3.44） more efficiently mobilized As than SAP （pH 5.44）. When both biosurfactants were used at the same pH （SAP adjusted to 3.44）, arsenic mobilization was improved by triple washing. The process efficiency for TA and SAP was similar, and depending on the soil sample, ranged between 50%-64%. Arsenic mobilization by TA and SAP resulted mainly from decomposition of Fe arsenates, followed by Fe3＋ complexation with biosurfactants. Arsenic was efficiently released from reducible and partially from residual fractions. In all soils, As（V） was almost completely removed, whereas content of As（III） was decreased by 37%-73%. SAP and TA might be used potentially to remove As from contaminated soils.

关键词： arsenic tannic acid saponin distribution speciation soil washing

Pharmacogenetics research on chemotherapy resistance in colorectal cancer over the last 20 years

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第29期20卷 9775-9827页

作者： mariusz Panczyk Laboratory of Molecular Diagnostics and Pharmacogenomics Department of Pharmaceutical BiochemistryMedical University of Lodz Division of Teaching and Outcomes of Education Faculty of Health ScienceMedical University of Warsaw

During the past two decades the first sequencing of the human genome was performed showing its high degree of inter-individual differentiation,as a result of large international research projects(Human Genome Project,the 1000 Genomes Project International HapMap Project,and Programs for Genomic Applications NHLBI-PGA).This period was also a time of intensive development of molecular biology techniques and enormous knowledge growth in the biology of *** clinical use in the treatment of patients with colorectal cancer(CRC),in addition to fluoropyrimidines,another two new cytostatic drugs were allowed:irinotecan and *** research into new treatment regimens and a new generation of drugs used in targeted therapy has also been *** last 20years was a time of numerous in vitro and in vivo studies on the molecular basis of drug *** of the most important factors limiting the effectiveness of chemotherapy is the primary and secondary resistance of cancer *** the genetic factors and mechanisms that contribute to the lack of or low sensitivity of tumour tissue to cytostatics is a key element in the currently developing trend of personalized *** hope to increase the percentage of positive treatment response in CRC patients due to practical applications of pharmacogenetics/*** the past 20 years the clinical usability of different predictive markers has been tested among which only a few have been confirmed to have high application *** review is a synthetic presentation of drug resistance in the context of CRC patient *** multifactorial nature and volume of the issues involved do not allow the author to present a comprehensive study on this subject in one review.

关键词： Pharmacogenetics Pharmacogenomics Drug resistance Colorectal cancer Chemoresistance Individualized medicine

Biochemical and microbial soil functioning after application of the insecticide imidacloprid

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2015年第1期27卷 147-158页

作者： mariusz Cycoń Zofia Piotrowska-Seget Department and Institute of Microbiology and Virology School of Pharmacy with the Division of Laboratory Medicine Medical University of Silesia Department of Microbiology University of Silesia

Imidacloprid is one of the most commonly used insecticides in agricultural practice, and its application poses a potential risk for soil microorganisms. The objective of this study was to assess whether changes in the structure of the soil microbial community after imidacloprid application at the field rate（FR, 1 mg/kg soil） and 10 times the FR（10 × FR, 10 mg/kg soil）may also have an impact on biochemical and microbial soil functioning. The obtained data showed a negative effect by imidacloprid applied at the FR dosage for substrate-induced respiration（SIR）, the number of total bacteria, dehydrogenase（DHA）, both phosphatases（PHOS-H and PHOS-OH）, and urease（URE） at the beginning of the experiment. In 10 × FR treated soil, decreased activity of SIR, DHA, PHOS-OH and PHOS-H was observed over the experimental period. Nitrifying and N2-fixing bacteria were the most sensitive to imidacloprid. The concentration of NO3-decreased in both imidacloprid-treated soils,whereas the concentration of NH4＋in soil with 10 × FR was higher than in the *** of the bacterial growth strategy revealed that imidacloprid affected the r- or K-type bacterial classes as indicated also by the decreased eco-physiological（EP） *** affected the physiological state of culturable bacteria and caused a reduction in the rate of colony formation as well as a prolonged time for growth. Principal component analysis showed that imidacloprid application significantly shifted the measured parameters, and the application of imidacloprid may pose a potential risk to the biochemical and microbial activity of soils.

关键词： Imidacloprid Enzyme activities Nitrogen transformation Physiological state Soil microorganisms

Mapping cultural ecosystem services in mountain forests using mobile phone data

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2023年第12期20卷 3437-3449页

作者： CIESIELSKI mariusz KAMINSKA Agnieszka Department of Geomatics Forest Research InstituteSękocin StaryBraci leśnej 305-090Poland

The aim of the work was to determine the spatial distribution of activity in the forest on the area of the Forest Promotional Complex“Sudety Zachodnie”using mobile phone *** study identified the sites with the highest(hot spot)and lowest(cold spot)***,stand,demographic,topographic and spatial factors affecting the distribution of activity were also *** approaches were applied in our research:global and local Moran’s coefficients,and a machine learning technique,Boosted Regression *** results show that 11,503,320 visits to forest areas were recorded in the“Sudety Zachodnie”in *** most popular season for activities was winter,and the least popular was *** global and local Moran’s I coefficients,three small hot clusters of activity and one large cold cluster were *** with high values with similar neighbours(hot-spots)were most often visited forest areas,averaging almost 200,000 visits over *** fewer visits were recorded in cold-spots,the average number of visits to these areas was about 4,*** value of global Moran’s I was equal to 0.54 and proved significant positive spatial *** of Boosted Regression Trees modeling of visits in forest,using tree stand habitat and spatial factors accurately explained 76%of randomly selected input *** variables that had the greatest effect on the distribution of activities were the density of hiking and biking trails and diversity of *** methodology presented in this article allows delineation of Cultural Ecosystem Services hot spots in forest areas based on mobile phone *** also allows the identification of factors that may influence the distribution of visits in *** data are important for managing forest areas and adapting forest management to the needs of society while maintaining ecosystem stability.

关键词： Ecosystem services Big data Traffic research Monitoring Forests

Increase in efficiency of dye-sensitized solar cells by porous TiO_2 layer modification with gadolinium-containing thin layer

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2011年第8期29卷 783-786页

作者： Maciej Zalas mariusz Walkowiak Grzegorz Schroeder Faculty of Chemistry Adam Mickiewicz University Institute of Non-Ferrous Metals Branch in Poznań Central Laboratory of Batteries and Cells

Modified with gadolinium-containing layer, nanoporous titania electrode and its application in dye-sensitized solar cells were reported. The electrode prepared was characterized with UV-Vis and X-ray diffraction （XRD） techniques. The amount of gadolinium was measured with inductively coupled plasma-optical emission spectrometry （ICP-OES） experiments. The modified electrode showed reduced N3 dye adsorption ability, but increased light conversion efficiency in comparison with the non-modified electrode. The overall conversion efficiencies, determined under 400 W/m2 irradiation with tungsten-halogen lamp at room temperature, were 0.55% for non-modified and 0.74% for modified electrodes.

关键词： dye-sensitized solar cell surface modification of TiO2 Gd-doped TiO2 rare earths