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Background. Piemontese wines are well known and valued all over the world. The most popular of them are Barolo and Barbaresco wines. However, in Poland, they are still little known and only now are being gradually introduced to a wider range of consumers. Objective. The aim of this study was to evaluate the content of inorganic anions, minerals, sugars and glycerol of Piemontese wines from micro-region Langhe, classified as DOCG („Denominazione di Origine Controllata e Garantita”, ie. controlled designation of origin guaranteed) and DOC („Denominazione di Origine Controllata”, ie. controlled designation of origin) products. Material and Methods. Seven types of red wines and one type of white wine were tested. High Performance Ion Chro­matography with conductometric detection (HPLC-CD) was used to measure the content of inorganic anions, ie. fluorides, chlorides, sulfates and phosphates. Flame atomic absorption spectrometry (F-AAS) was used to measure the content of minerals, ie. magnesium, calcium, sodium, copper, potassium, zinc and iron, while High Performance Liquid Chromatography with charged aerosol detection (HPLC-CAD) was used to measure the content of glycerol and sugars, ie. fructose, glucose and sucrose. Results. Our studies show that although Piemontese wines are characterized by a relatively low content of minerals in comparison with the wines from other regions, they contain a lot of ingredients that have beneficial effects for human health. Moreover, we observed that the studied wines contain particularly high concentration of inorganic ions – phosphates and fluorides. Furthermore, all tested red wines show far reaching similarities in their chemical properties, which is possibly a direct consequence of using in their production locally cultivated grape varieties. Conclusions. Analysis of the wines from the Piemont region, classified as DOCG, DOC, confirmed that these are dry wines of a high quality.
This paper presents the results of speciation analysis of aluminium in the River Silnica. The concentration of individual aluminium forms has been correlated with the select physical and chemical parameters of water.
The taxonomic composition of macroinvertebrates in the Liwiec River and its tributaries situated in central and eastern Poland was studied during three seasons (spring, summer and autumn). Simultaneously, physical and chemical parameters of water were measured. Water parameters were different in each study period. Macroinvertebrates samples collected in summer and autumn were much more diversified than the samples collected in spring. In the spring samples a greater EPT diversity was observed, while in the samples collected in autumn Odonata, Coleoptera and Heteroptera were more diversified. The values of the BMWP-PL index were slightly higher for the summer and autumn samples than for the spring ones. Correlation between the concentration of oxygen in water and the number of individuals of Plecoptera and Trichoptera larvae was noted. The negative correlation between the values of BOD₅, the concentration of nitrate ions and conductivity, and the number of macroinvertebrate families was observed. A negative correlation also was noted between nitrate and phosphate ion concentrations and the number of individual insect larvae.
Alcoholic emulsion creams are characterized with high viscosity and density, which makes the alcohol content and other physical and chemical parameters determination of products significantly difficult. Analytical methods applied for the determination of ethanol, are labor-consuming, they are characterized with low precision, require the sample distillation and the achieved results are mostly underestimated. On a base of comparison of various distillation techniques and determination methods, it can be stated that ethanol concentration measurements in alcoholic creams using pycnometric and DMA-58 density-meter after previous sample distillation (100 cm3 of cream + 200 cm3 of water), are distinguished with relatively high precision and result repeatability. Also applying the SPME extraction in gaseous phase along with chromatographic analysis seems to be advantageous. The method based on the refractometric measurement of toluene and benzene extracts of egg emulsions is characterized with short performance time, sufficient precision and very low costs.
The mediterranean’s karst basin waters is the topic of this research paper. The aim of the research is to help protect the karst underground waters through wastewater management of the basin’s area. The main difficulty for our research was a shortage of knowledge in the identification of the karst’s hydrological system, such as in the case of a researched system where the system’s inlet and outlet are not completely known and the whole system is only partially explained from hydrogeological and hydrological aspects. For the research spot we chose a particular karst basin. Municipial wastewaters are discharged into the basin without any purification and, after being held in the underground, they appear at the spring that supplies water for the biggest lake in the Balkans. Correlation data between low water and the characteristics of the basin (i.e. hydrological balance analysis data of specific capacity) do not exist. A series of hydro-chemical measurements at low water were undertaken in parallel at the inlet and the outlet in order to determine this correlation by an input-output balancing of pollutants’ load calculating their mass flow. The hold time of pollutants in the underground karst water was determined by correlating the particular water quality indexes. Hold time amounts to 55 to 78 hours, depending primarily on the water ingredient features.
New particle formation and growth were observed at a coastal site (Preila station, Lithuania) during 1997 and 2000–2002. The total amount of data analysed covers 291 one-day periods, 45 (15%) of which were long-term, new particle formation days. Short-term nucleation events (from a few minutes to one hour) and long-term events (from one to eight hours) were identified. The mean particle growth rate, condensation sink and condensable vapour source rate during nucleation events were 3.9 nm h−1, 1.45 × 10−3 cm−3 s−1 and 7.5 × 104 cm−3 s−1 respectively. The average formation rate J10 was 0.4 cm−3 s−1. The nucleation events were accompanied mainly by air masses transported from the north (43%) and north-west (19%). Meteorological parameters and trace gas (O3, SO2, NO2) concentrations were also analysed. It was found that nucleation events are related to high levels of solar radiation.
Seydisuyu Basin, which contains very important agricultural areas and boron deposits of Turkey, is located in Eskişehir province. In this paper, the groundwater quality of Seydisuyu Basin was evaluated by using some physiochemical (temperature, conductivity, salinity, and demanded oxygen) and chemical (boron and arsenic) parameters. Groundwater samples were collected seasonally (2011-12) from 14 wells from the Seydisuyu Basin and all of the data obtained experimentally were compared with national and international drinking and usage water standards. Also, cluster analysis (CA) was applied to the results to classify the stations according to the contents of arsenic and boron levels by using the Past package program, factor analysis (FA) was applied to the results to classify the affective factors on groundwater quality, and Pearson Correlation Index was applied to the results to determine the relations of parameters by using the SPSS 17 package program. According to data, arsenic and boron accumulations of wells were higher than the drinking water limits specified by the Turkish Standards Institute (TS266), European Communities (EC), and World Health Organization (WHO) Drinking Water Standards. According to the results of FA, three effective factors that explain 76.36% of the total variance was detected and arsenic-boron contents of groundwater were positively loaded with the second factor, named as “Boron Works and Environmental Factor.” According to results of CA identified by using arsenic and boron accumulations, station 1, which was the closest well to the boron facility, showed the highest distance and lowest similarity with the other stations.
The interactions between bacteria and heterotrophic protists are essential for the ecosystem ecology of freshwater. The basic objective of the study was to analyse the seasonal dynamics of changes in particular elements of the microbial loop (bacteria, flagellates and ciliates) in various types of small water bodies. The classification into particular trophic groups of ciliates and the role of the organisms in the functioning of the microbial loop was also analysed. The abundance and biomass of microbial communities has been assessed in eight reservoirs of varied origin (peat pits, clay pits and post-mining reservoirs), in order to test a hypothesis that the microbial communities differed among reservoirs and that differences could be related to fertility of habitats. Fieldwork was done from April to November 2010-2012. From each reservoirs once a month, three samples were collected with a 5-litre planktonic sampler. Samples were taken on two stations: pelagic – located in the deepest part of each reservoirs and littoral. The density and biomass of bacteria and protists significantly differed between the studied reservoirs, with the lowest numbers in the peat pits and clay pits and the highest in the post-mining reservoirs. All of the studied reservoirs were generally dominated by ciliates belonging to the orders Oligotrichida and Scuticociliatida constituted > 30% of the total numbers. In all reservoirs bacterivorous ciliates occurred in the highest numbers, while predators ones in the lowest. Generally, concentrations of nutrients (especially total phosphorus) is not a factor having the strongest effect on the abundance of bacteria and heterotrophic flagellates and the number and strength of correlations between microbial loop components. The relations demonstrated between bacteria and protists point to an important process of matter and energy flow from bacteria to higher trophic levels. In peat pits, relations between bacteria and ciliates were stronger. Only in clay pits and post-mining reservoirs the correlation between bacteria and heterotrophic flagellates were found. Consuming much of bacterial productions, protozoa become an important link between bacteria and micrometazoans.
The objective of the study was to monitor the activity of soil enzymes related to C, N and P transformations as well as some chemical parameters as influenced by an area covered with black locust (Robinia pseudoacaciaL). Samples of typical brown soil were collected from the surface layer of a cultivated field (0 - 24 m, every 2 m) adjacent to a planted area under black locust trees. Activities of the enzymes of the C-cycle (β-glucosidase), N-cycle (nitrate reductase, arginine deaminase and urease), P-cycle (alkaline and acid phosphatases) and dehydrogenases were determined colorimetrically. Moreover, pH in KCl, CORG, NTOT, PE-R and N-NH₄⁺ determinations were made. Significant differentiation of chemical parameters and enzymatic activity (except for acid phosphatase activity) was noted with increasing distance from black locust trees. CORG, NTOT concentrations and dehydrogenases, alkaline phosphatase, urease andβ-glucosidase activitiesdecreased with the distance fromR. pseudoacaciawhile PE-Rand N-NH₄⁺contents as well as nitratere ductase and deaminase arginine positively correlated with the distance from the black locust stand.
Sunflower husk ash containing the primary and secondary plant nutrients – phosphorus (10.94% P2O5), potassium (25.84% K2O), calcium (19.07% CaO), magnesium (18.58% MgO), and also some micronutrients (zinc, copper, cobalt, manganese, iron, and molybdenum) may be used for fertilization of variety plants. The sunflower husk has low plasticity, and the granulation process occurs better when binding materials (sugar factory lime, molasses, urea formaldehyde resin) are used. This study investigates determination of the optimal parameters of the granulation process as recycling and moisture content, ratio of ingredients and influence of additives by using laboratory equipment. The main product quality parameters as chemical composition, static crushing strength of granules, granulometric composition, and pH of 10% solution by standard method were examinated. The results show that sunflower husk may be used for fertilizers of 0-6-13 grade production.
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