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1

Recent progress, opportunities and challenges in collaborative learning and orchestrating creativity

100%
Chen J., Gao X., Yan L., Xu D.
World Scientific News
|
2015
|
tom 09
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Recent progress in monoaromatic pollutants removal from groundwater through bioremediation

100%
Chen J., Gao X., Yan L., Xu D.
International Letters of Natural Sciences
|
2015
|
tom 07
Monoaromatic pollutants such as benzene, toluene, ethylbenzene and mixture of xylenes are now considered as widespread contaminants of groundwater. In situ bioremediation under natural attenuation or enhanced remediation has been successfully used for removal of organic pollutants, including monoaromatic compounds, from groundwater. Results published indicate that in some sites, intrinsic bioremediation can reduce the monoaromatic compounds content of contaminated water to reach standard levels of potable water. However, engineering bioremediation is faster and more efficient. Also, studies have shown that enhanced anaerobic bioremediation can be applied for many BTEX contaminated groundwaters, as it is simple, applicable and economical.This paper reviews microbiology and metabolism of monoaromatic biodegradation and in situ bioremediation for BTEX removal from groundwater under aerobic and anaerobic conditions. It also discusses the factors affecting and limiting bioremediation processes and interactions between monoaromatic pollutants and other compounds during the remediation processes.
3

Spatial variability of soil physical properties based on GIS and geo-statistical methods in the red beds of the Nanxiong Basin, China

100%
Yan P., Peng H., Yan L., Lin K.
Polish Journal of Environmental Studies
|
2019
|
tom 28
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nr 4
Spatial variability of soil has an important influence on the structure and function of soil. The spatial distribution of soil physical properties provides basic and useful information relevant to soil management and ecological protection. A typical red beds basin was selected for this study, soil samples at 0-20 cm were taken from 150 locations in the northeast part of Nanxiong Basin, in which GIS and geostatistics were used to analyze the spatial variability of the soil physical properties. The results show that the coefficients of variation of soil bulk density, total porosity and capillary porosity are 9.82%, 4.47%, and 3.72%, respectively, which indicate weak variation. Pearson correlation indicated that soil bulk density was significantly positively correlated with soil moisture and capillary water capacity (p<0.01), with correlation coefficients of 0.85 and 0.91, respectively, but was significantly negatively correlated with total porosity, capillary porosity and non-capillary porosity, with correlation coefficients of 0.82, 0.71 and 0.94, respectively (p<0.01). The spatial distributions of soil physical properties using ordinary kriging (OK) and empirical bayesian kriging (EBK) methods were subjected to comparative analysis. In addition, different cross-validation indicators were applied to assess the performance of different interpolation methods. Cross-validation demonstrated that EBK performed better than OK. And EBK produced smaller regions of predicted soil physical properties than OK, highlighting the necessity of choosing the appropriate methods in studying the spatial distribution of soil properties.
4

Overexpression of human CUTA isoform2 enhances the cytotoxicity of copper to HeLa cells

76%
Yang J., Li Q., Yang H., Yan L., Yang L., Yu L.
Acta Biochimica Polonica
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2008
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tom 55
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nr 2
411-415
Copper, an essential transient element, can be toxic to cells when present in excess. Altered copper homeostasis is involved in pathological events of many diseases. Human CUTA isoform2 is a member of cation tolerance protein (CutA1) family. In this study, we examined the effect of CUTA isoform2 overexpression on copper toxicity. It was shown that overexpressed CUTA isoform2 sensitized HeLa cells to copper toxicity by promoting copper-induced apoptosis. The inhibition effect of excessive copper on cell proliferation was also enhanced by overexpressed CUTA isoform2. So CUTA isoform2 was implicated to be involved in the cytotoxicity of copper.
5
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Mixing characteristics of the subarctic front in the Kuroshio-Oyashio confluence region

76%
Ke-Lan Z., Xi C., Ke-Feng M., Dong H., Sen H., Yan L.
Oceanologia
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2019
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tom 61
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nr 1
6

Interaction of boron and aluminum on the physiological characteristics of rape (Brassica napus L.) seedlings

76%
Yan L., Riaz M., Wu X., Wang Y., Du C., Jiang C.
Acta Physiologiae Plantarum
|
2018
|
tom 40
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nr 02
It has been reported that aluminum (Al) toxicity is a major limiting factor for plant growth and production on acidic soils. Boron (B) is indispensable micronutrient for normal growth of higher plants, and its addition could alleviate Al toxicity. The rape seedlings were grown under three B (0.25, 25 and 500 μM) and two Al concentrations [0 (−Al) and 100 μM (+Al) as AlCl₃·6H₂O]. The results indicated that Al stress severely hampered root elongation and root activity at 0.25 μM B while the normal (25 μM) and excess (500 μM) B improved the biomass of rape seedlings under Al exposure. Additionally, normal and excess B treatment reduced accumulation of Al in the roots and leaves under Al toxicity, which was also confirmed by hematoxylin with light staining. This indicates that both normal and excess B could alleviate Al toxicity. Furthermore, it also decreased the contents of malondialdehyde and soluble protein under Al toxicity. Likewise, superoxide dismutase activity (SOD) improved by 97.82 and 131.96% in the roots, and 168 and 119.88% in the leaves at 25 and 500 µM B, respectively, while the peroxidase and catalase activities dropped as a result of Al stress. The study results demonstrated that appropriate B application is necessary to avoid the harmful consequences of Al toxicity in rape seedlings.
7

A novel single nucleotide polymorphism of the POU1F1 gene associated with meat quality traits in rabbits

76%
Wang J., Li G., Elzo M. A., Yan L., Chen S., Jia X., Lai S.
Annals of Animal Science
|
2015
|
tom 15
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nr 3
8

Biomass Co-Firing Retrofit with ROFA for NOx Reduction

64%
Higgins B., Yan L., Gadalla H., Meier J., Fareid T., Liu G., Milewicz M., Repczynski A., Ryding M., Blasiak W.
Polish Journal of Environmental Studies
|
2010
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tom 19
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nr 6
9

Frequency of double minute chromosomes and combined cytogenetic abnormalities and their characteristics

52%
Fan Y., Mao R., Lv H., Xu J., Yan L., Liu Y., Shi M., Ji G., Yu Y., Bai J., Jin Y., Fu S.
Journal of Applied Genetics
|
2011
|
tom 52
|
nr 1
Double minute chromosomes (DMs) are the cytogenetic hallmark of extra-chromosomal genomic amplification. The frequency of DMs in primary cancer and the cytogenetic features of DMs-positive primary cancer cases are largely unknown. To unravel these issues, we retrieved the Mitelman database and analyzed all DMs-positive primary cancerous karyotypes (787 karyotypes). The overall frequency of DMs is 1.4% (787 DMs-positive cases; total 54,398 cases). We found that DMs have the highest frequency in adrenal carcinoma (28.6%, topography) and neuroblastoma (31.7%, morphology). The frequencies of DMs in each tumor were much lower than in previous reports. The frequency ofDMs in malignant cancers is significantly higher than in benign cancers, which confirms that DMs are malignant cytogenetic markers. DMs combined cytogenetic abnormalities are identified and sorted into two groups by principal component analysis (PCA), with one group containing −4, −5, −8, −9, −10, −13, −14, −15, −16, −17, −18, −20, −21, and −22, and the other containing −1p, −5q, +7, and +20. The prominent imbalance in DMs-positive cancer cases is chromosome loss. However, DMs-positive cancer cases, deriving from different morphologic cancers, cannot be clearly divided into subgroups. Our large database analysis provides novel knowledge of DMs and their combined cytogenetic abnormalities in primary cancer.
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