Wyniki wyszukiwania - Biblioteka Nauki

1

Photogrammetric method of measuring deformations of soil sample sheared in triaxial apparatus

100%

Buczek W. , Orlowski P. , Halkowski J.

Annals of Warsaw Agricultural University. Land Reclamation

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1986

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tom 22

2

Effect of fonofos on soil dehydrogenase activity

100%

Stepniewska Z. , Wolinska A. , Lipinska R.

International Agrophysics

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2007

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tom 21

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nr 1

3

Systematic errors of photographing with non-metric camera the soil sample investigated in triaxial apparatus

86%

Buczek W.

Annals of Warsaw Agricultural University. Land Reclamation

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1986

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tom 22

4

Impact of curing process on ultrasonic pulse velocity in stabilized soils

86%

Miturski M.

Acta Scientiarum Polonorum. Architectura

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2021

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tom 20

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nr 4

5

Content of selenium in arable soils near Wroclaw

86%

Patorczyk-Pytlik B. , Kulczycki G.

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nr 4

EN

The material for this study consisted of 60 soil samples collected from the arable layer of cultivated fields located in the vicinity of Wrocław. The samples varied in their properties and reflected a whole range of soil types to be found in the region of Lower Silesia. The examinations proved that selenium content in arable soils near Wroclaw ranged from 81 to 449 μg⋅kg-1 and the average value of Se content in these soils was 202 μg⋅kg-1. The lowest Se content appeared in sandy soils (174 μg⋅kg-1), while the highest value was found in loamy soils. The mean value of Se content calculated for this group of soils was 228 μg⋅kg-1. Selenium content in soils varied to a high degree (V=42%). The value lower than 100 μg⋅kg-1, assumed as a critical one for the quality of plant yield, was recorded for 4 samples, while in 33 soil samples the Se content fell in the range of 101- -200 μg⋅kg-1 and in 14 samples it ranged from 201 to 300 μg⋅kg-1. Only 9 soils out of these subjected to investigation characterized selenium value higher than 300 μg⋅kg-1, i.e. the value regarded as medium soil fertility. Se content in soils was highly correlated with their content of silt and clay, as well as colloidal parts and also with the amount of C and total content of such chemical elements as P, S, Fe, Cu, Zn and Ni.

PL

Materiał do badań stanowiło 60 prób glebowych pobranych z warstwy ornej pól uprawnych położonych w okolicach Wrocławia. Ich właściwości były w znacznym stopniu zróżnicowane i odzwierciedlały przekrój gleb występujących na terenie województwa dolnośląskiego. Wykazano, że zawartość selenu w glebach gruntów ornych okolic Wrocławia wahała się od 81 do 494 μg⋅kg-1, wartość uśredniona wyniosła 202 μg⋅kg-1. Najniższą zawartość Se stwierdzono w glebach piaszczystych (174 μg⋅kg-1), a najwyższą w glebach gliniastych. Określona dla tej grupy średnia zawartość Se kształtowała się na poziomie 228 μg⋅kg-1. Zawartość selenu w glebach była w znacznym stopniu zróżnicowana (V=42%). Wartość niższą niż 100 μg⋅kg-1 – uznawaną za krytyczną dla jakości zbieranych plonów roślin – stwierdzono w 4 próbkach, a w 33 glebach zawartość Se mieściła się w przedziale 101-200 μg⋅kg-1, natomiast w 14 od 201 do 300 μg⋅kg-1. Spośród badanych gleb jedynie w 9 zawartość ta była większa niż 300 μg⋅kg-1 – wartość uznawana jako średnia zasobność. Zawartość selenu w glebach była wysoko istotnie skorelowaną z zawartością zarówno części spławianych, jak i koloidalnych, a także z ilością węgla oraz całkowitą zawartością P, S, Fe, Cu, Zn i Ni.

6

Changes in soil contamination by selected herbicides used in protection of cereals

86%

Kucharski M. , Domaradzki K.

Polish Journal of Soil Science

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2014

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tom 47

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nr 2

EN

The aim of the studies was to evaluate the herbicidal contaminations in soil. Monitoring tests were carried out in two periods: 2002–2008 and 2010–2013, on cereal plantations located in south-western Poland. The samples of soil were collected at harvest time. The determination of 2,4-D, MCPA, diflufenican, dicamba, chlortoluron, fluroxypyr, isoproturon, clopyralid residues were conducted using the chromatography GC/ECD and HPLC/UV. Comparing the research results from both periods, a decrease of several percent in the number of the samples with residues was observed. In the years 2010–2013, the average residues of herbicide determined in 27% of samples ranged from 0.0012 to 0.0052 mg kg⁻¹ .1

7

First insight into microbial community composition in a phosphogypsum waste heap soil

86%

Zielińska S. , Radkowski P. , Ossowski T. , Ludwig-Gałęzowska A. , Łoś J. , Łoś M.

Acta Biochimica Polonica

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2017

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tom 64

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nr 4

693-698

EN

The aim of this study was to investigate the soil microbial communities of a phosphogypsum waste heap. The soil microbial community structures can differ over time, as they are affected by the changing environmental conditions caused by a long-term exposure to different kinds of pollutions, like is the case of soil in the post-production waste area in Wiślinka (in the northern part of Poland) currently undergoing restoration. Our analyses indicated that the most abundant phyla were Proteobacteria, Acidobacteria, and Actinobacteria, and generally such an abundance is common for most of the studied soils. The most dominant class were Alphaproteobacteria, with their participation in 33.46% of the total reads. Among this class, the most numbered order was Sphingomonadales, whereas among this order the Sphingomonadaceae family was the most abundant one. The Sphingomonadaceae family is currently in the center of interest of many researchers, due to the ability of some of its members to utilize a wide range of naturally occurring organic compounds and many types of environmental contaminants. This kind of knowledge about microbial populations can support efforts in bioremediation and can improve monitoring changes in the contaminated environments.

8

ODR modifications by the storing conditions of soil samples

86%

Bieganowski A. , Wyczolkowski A. , Gawlik J.

|

tom 35

EN

ODR was calculated for the soil water extracts prepared from freshly taken soil, wet soil stored in plastic bags and air dry soil. ODR in KCI solution was used as reference.ODR recorded for the extracts obtained from freshly taken soil was lower than for the extracts prepared from the stored soil samples. This indicates that for ODR measurements fresh soil should be investigated.

9

Oribatid fauna [Acari: Oribatida] of abandoned galena-calamine wastelands

86%

Skubala P.

|

2003

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tom 29

|

nr 2

10

Evaluation of potassium quantity-intensity parameters of selected Polish agricultural soils

72%

Diatta J. B. , Kocialkowski W. , Grzebisz W.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2006

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tom 09

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nr 4

11

The evaluation of methods for detection of Bacillus anthracis spores in artificially contaminated soil samples

72%

Bielawska-Drozd A. , Niemcewicz M. , Bartoszcze M.

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nr 1

5-10

EN

The nested PCR has been used to evaluate the usefulness and efficiency of different Bacillus anthracis spore isolation methods in contaminated soil samples. The best results were obtained using two methods described by Beyer et al. [1] and Cheun et al. [9]. Outer and inner pairs of primers were designed from the protective antigen gene of plasmid pXO1 as well as from genes B and C of the capsule region of the plasmid pXO2. The influence of soil types on obtained results was also studied. The type of soil samples did not affect the nested PCR results. Furthermore, the sensitivity of nested PCR and PCR – ELISA was also examined.

12

Landscape patch pattern effect on relationships between soil properties and earthworm assemblages: a comparison of two farmlands of different spatial structure

72%

Regulska E. , Kolaczkowska E.

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nr 4

EN

Our survey was carried out in two study sites of approximately 3.3 ha each located in the Suwałki Lake District in NE Poland in the year 2008. Earthworms and soil samples were collected during two campaigns (spring and autumn) from 25 × 25 cm and 30 cm deep sampling points. The complex arable landscape (CAL) supported higher earthworm diversity, density and biomass than the similarly managed but homogeneous arable landscape (HAL). The spring and autumn earthworm sampling campaigns revealed very different patterns, and we conclude that autumn sampling is the most adequate for biomonitoring. On the other hand, the spring collections were significantly correlated to soil physical parameters, thus spring sampling is more suitable for studying such correlations. Significant correlations occurred almost exclusively for CAL and the soil parameters significantly relating with earthworm community were: soil moisture, nitrogen and organic carbon contents. The possible reason for it is the presence of numerous refuges for lumbricids offered by field margins, balks, woodlots and meadows in the CAL and lack of them in the HAL.

13

High occurrence of Acanthamoeba genotype T4 in soil sources from Bolivar State, Venezuela

72%

Wagner C. , Reyes-Batlle M. , Hernan A. , Rojas E. , Perez G. , Lopez-Arencibia A. , Sifaoui I. , Martinez-Carretero E. , Pinero J. E. , Valladares B. , Lorenzo-Morales J.

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nr 3

14

Mining association rules applied to goethite and haematite abundances in manganese-contaminated soils

72%

Ekosse G. I. E. , Forcheh N.

|

2007

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tom 16

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nr 4

531-538

EN

Mining association rules (MAR) are applied in elucidating on the abundances and association of Fe minerals in soils within the proximity of an abandoned manganese oxide (MnO^) mine. Four hundred soil samples were obtained from a 4 km2 area close to the abandoned mine in Kgwakgwe, Botswana. The Fe minerals in the soil samples were identified by x-ray diffractometry. Results depicted haematite and goe- thite present in different abundances: none, trace, minor and major in soils from the study area but only haematite in soils from the control site. From 16 possible combinations of the two Fe minerals in the soil samples, MAR results for confidence, certainty factor, lift and support, depicted haematite in major quantity to be the most influential. This fact is substantiated by its occurrence in the country shales.

15

Concentrations of 137Cs, 40K radionuclides and some heavy metals in soil samples of Chocholowska Valley from Tatra National Park

72%

Kubica B. , Kwiatek W. M. , Stobinski M. , Skiba S. , Skiba M. , Golas J. , Kubica M. , Tuteja-Krysa M. , Wrona A. , Misiak R. , Krzan Z.

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2007

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tom 16

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nr 5

723-729

EN

This paper presents the results of determination of artificial 137cs and natural 40K activity concentrations and some heavy metals in soil samples from the region of one of the main valleys of Tatra National Park (Chochołowska). Our investigation concentrated on 137Cs and heavy metal levels in mountain soil taken from Chochołowska Valley, which revealed great variability in their concentration. The results show considerably small amounts of radionuclides 137cs and 40K in the soils. Larger amounts of those elements can be found in the organic surface horizons of the soils. The evaluation of the content of those elements must be based on the bulk density analysis of the soil.

16

Study on buffering capacity and organic matter of some soil samples from Rungicherra Tea-Estate, Bangladesh

72%

Zamir R. , Islam N. , Hossain M. F.

International Letters of Natural Sciences

|

2015

|

tom 44

EN

In this study, soil samples from three different hills of three topographic positions were evaluated on the basis of buffer capacity and organic matter. Maximum soil samples were found to have good buffer capacity where soil samples of topographical positions hill base and hill top showed maximum and minimum values respectively, leaving hill slope samples in medium value of buffer capacity. Our study suggested this variation of buffer capacity may be due to the differences of organic matter amongst the topographical positions and profiles.

17

Checklist of soil Mesostigmata (Acari) of Central Croatia (Dalmatia) with some microenvironmental remarks

72%

Kaczmarek S. , Marquardt T. , Falenczyk-Kozirog K.

Polish Journal of Entomology

|

2009

|

tom 78

|

nr 2

EN

Mesostigmatid mites (Acari) were studied in various microhabitats of Central Croatia (Dalmatia). Altogether 320 samples (taken during August 2002) and 2074 individuals were examined. Checklist of soil Mesostigmata, with microenvironmental notices was prepared.

18

The effect of edaphic factors on the similarity of parasitic nematodes in the soil sampled in nurseries of ornamental trees and shrubs

72%

Chalanska A. , Labanowski G.

Journal of Horticultural Research

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2014

|

tom 22

|

nr 1

19

Detection of Giardia intestinalis DNA in environmental water and soil samples collected from the Pomerania Province and the Warmia-Masuria Province, Poland using real-time PCR and nested–PCR

72%

Lass A. , Szostakowska B.

|

tom 62

|

nr Suppl.

20

Isolation and characterization of extracellular bioflocculants produced by bacteria isolated from Qatari ecosystems

72%

Abd-El-Haleem D. A. M. , Al-Thani R. F. , Al-Mokemy T. , Al-Marii S. , Hassan F.

Polish Journal of Microbiology

|

2008

|

tom 57

|

nr 3

EN

Compared with conventional synthetic flocculants, bioflocculants has special advantages such as safety, strong effect, biodegradable and harmlessness to humans and the environment, so they may potentially be applied in drinking and wastewater treatment, downstream processing, and fermentation processes. To utilize bioflocculants widely in industrial fields, it is desirable to find various microorganisms with high bioflocculant-producing ability and improve the flocculating efficiency of the bioflocculant. In the present study, screening of new flocculant-producing microorganisms was carried out using samples collected from different Qatari ecosystems. The flocculating activity of the novel bioflocculants produced by isolated microorganisms was investigated. A total of 5 g/l Kaolin suspension was used to measure the flocculating activity. Isolated bioflocculant-producing bacteria were identified by 16S rDNA analysis, using PCR with universal primers. Comparative analysis of the 16S rDNA sequence (~550 bp) in the GenBank database revealed that these bacteria are related to the genus Bacillus. FT-IR spectrometry analysis of the extracted bioflocculants indicated the presence of carboxyl, hydroxyl and amino groups preferred for the flocculation process. Influences of pH and bioflocculant dosage on the flocculation were also examined. The maximum flocculating rates were observed at pH 7, 7 and 3 of the bioflocculants derived from strains QUST2, QUST6 and QUST9, respectively. However, 20.0 mg/l was the dose that gave the highest flocculating rate with all examined bioflocculants. The elemental analysis of examined bioflocculants revealed the mass proportion of C, H, N and S. Carbon and nitrogen contents of examined bioflocculants were in the range of 42-48% and 11-12%, respectively.