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1

China’s low carbon economic growth efficiency: an analysis involving carbon sink

100%
Ma D.
Polish Journal of Environmental Studies
|
2017
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tom 26
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nr 3
By establishing an evaluation system of low carbon economic growth efficiency (LCEGE), inclusive of carbon sink, a non-radical DEA model with slacks-based measure (SBM) was used to measure provincial LCEGEs in China during the period from 1998 to 2013. Based on this data, the spatial auto-correlation of Chinese LCEGE was analyzed. Finally, according to the 1998-2013 panel data from 30 provinces across the country, the paper built up a spatial panel data model to conduct empirical research on the factors influencing LCEGE. The research results show that during the sample period, China’s provincial LCEGEs differentiate from each other, and the average LCEGE in eastern coastal provinces phenomenally exceeds those of the inland provinces. In terms of the three regions, eastern China witnesses the highest LCEGE, which is followed by western China; and central China was last in the ranking. Moran’s I statistic result indicates that provincial LCEGEs have significant spatial auto-correlation and tend to cluster. Factors of industrial structure, energy consumption structure, and government policy exert a remarkably negative effect on LCEGE; while technological innovation, human capital, FDI, and foreign trade lend LCEGE a helping hand.
2

Estimation and comparative analysis of environmental efficiency in China, with and without consideration of Haze

51%
Ma D., He F., Li G., Chen L.
Polish Journal of Environmental Studies
|
2018
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tom 27
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nr 1
This paper aims to introduce the new constraints of PM2.5 into the environmental efficiency research framework, based on the provincial panel data of China during 2001-12. The authors examine environmental efficiency with and without consideration of PM2.5, conduct hypothesis tests on these environmental efficiencies, and analyze the energy savings and haze reduction. The results indicate that the overall environmental efficiency score is inefficient. The average environmental efficiency scores are 0.706 and 0.867 with and without the consideration of PM2.5, respectively, and omitting PM2.5 would result in biased environmental efficiency change. In addition, empirical analysis shows that there is an unbalanced regional development and significant differences among provinces in environmental efficiency. Last but not the least, the potential savings of energy, water, and regional haze reduction average 24.26%, 39.16%, and 26.49%, respectively.
3
Content available remote

The role of hydrogen sulfide in pathologies of the vital organs and its clinical application

45%
Jin Z., Chan H., Ning J., Lu K., Ma D.
Journal of Physiology and Pharmacology
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2015
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tom 66
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nr 2
4

Systemic inflammation induces a profound long term brain cell injury in rats

39%
Fan L., Wang T., Chang L., Song Y., Wu Y., Ma D.
Acta Neurobiologiae Experimentalis
|
2014
|
tom 74
|
nr 3
The long term impact of neuroflammation induced by systemic inflammation on astroglial transcription factor nuclear factor (NF)-KB activation in the sub-region of hippocampus as well as its' association with the ultra-structural changes in brain cells are yet unknow. In this study, rats received 10 mg/kg of lipopolysaccharide (LPS, ip injection) and NF-KBp65 expression on the astroglia as well as the neuronal and astroglial ultra-structural changes and/or death and microvasculature damage were assessed with immunofluorescence and transmission electron microscopy respectively up to 16 days after treatment. The results showed that in the CA1 and CA3 region of the hippocampus, the fluorescence intensity of NF-KBp65 was increased from day 1 after LPS injection, reaching a peak at day 3, and stayed at higher level when compared to the control up to 16 days after LPS treatment (P<0.05). Electron microscopy studies revealed sustainable substructural alterations, injury or even death of astrocytes, neurons and capillaries even after 16 days post LPS injection. Our study demonstrated that long-term sustainable activation of astroglial NF-KB following systemic inflammation was associated with brain cell and microvasculature injury in the sub-region of the hippocampus which ultimately likely results in brain functional impairment.
5
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Abundance and community structure of ammonia oxidizing archaea and bacteria in response to peanut growth under controlled condition in Shandong, China

39%
Huang C., Xu N., Fu Z., Sun B., You S., Ma D., Yu J.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
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tom 18
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nr 6
Based on a three-year field experiment under controlled condition in Ji’nan, China, the effects of peanut growth on the variation in the abundance and community structure of ammonia oxidizing bacteria (AOB) and archaea (AOA) before and after peanut growth were investigated through quantitative PCR and cluster analysis of terminal-restriction fragment length polymorphism. Our results show that the community composition of AOA and AOB was greatly affected by the peanut growth leading to the decreased abundance of AOA and increased abundance of AOB. Furthermore, AOA and AOB community structures varied before and after peanut growth. Phylogenetic analysis indicated that all AOA and AOB community sequences were clustered into the uncultured group. Altogether, the results suggested that the abundance of AOA and AOB in soil and their community compositions can be greatly affected by the peanut growth.
6

Exogenous hydrogen sulfide alleviates salt stress by improving antioxidant defenses and the salt overly sensitive pathway in wheat seedlings

33%
Ding H., Ma D., Huang X., Hou J., Wang C., Xie Y., Wang Y., Qin H., Guo T.
Acta Physiologiae Plantarum
|
2019
|
tom 41
|
nr 07
Hydrogen sulfide (H₂S) has the ability to strengthen plant stress tolerance; however, the effects of H₂S on wheat seedlings under salt stress and the underlying molecular mechanism are still unclear. This study examined the effects of exogenous NaHS as H₂S donor on photosynthesis, antioxidant system, and the expression profile of genes related to antioxidant defense responses, the salt overly sensitive (SOS) and mitogen-activated protein kinase (MAPK) pathways in wheat seedlings treated with NaCl stress. H₂S application improved photosynthesis, and decreased H₂O₂ and malondialdehyde (MDA) contents in wheat seedling leaves under NaCl stress. In addition, antioxidant enzyme activity and the content of ascorbic acid and reduced glutathione increased with H₂S application. Moreover, H₂S pretreatment up-regulated expression levels of genes related to antioxidant system, SOS pathway and MAPK pathway as well as the transcription factor dehydration-responsive element binding gene. Overall, these findings suggest that H₂S alleviates salt stress in wheat seedlings not only by strengthening antioxidant defense systems, but by coordinating signal transduction pathways related to the stress response at a transcriptional level.
7

Polycyclic aromatic hydrocarbons in soil around coal-fired power plants in Shandong, China

33%
Cheng Q., Ge W., Chai C., Wu J., Ma D., Zeng L., Zhu X., Chen Q., Li J.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 1
This study comprehensively investigated the concentrations, distribution patterns, sources, and health risks of 16 polycyclic aromatic hydrocarbons (PAHs) found in soils around two thermal power plants in Shandong, China. The total concentrations of the 16 total PAHs (Σ₁₆PAH) in the Longguang (LG) and Xinyuan (XY) thermal power plants were 1,031.78-2,744.06 and 1,383.8-2,924.8 μg/kg, respectively, with mean values of 1,925.2 and 2,303.1 μg/kg, respectively. Seven carcinogenic PAHs accounted for 45.5% and 55.7% of Σ₁₆PAHs in soils around LG and XY thermal power plants, respectively. A similar composition pattern of PAHs was observed in soils around the two power plants. The contributions of four-ring PAHs, namely, fluoranthene (FLA), pyrene (PYR), benz[a]anthracene (BaA), and chrysene (CHR), were high; thus, the four-ring PAHs dominated in soils around the two power plants. With the increase of distance, most individual PAH concentrations decreased, and ∑₁₆PAHs concentrations decreased significantly from 200 m to 500 m. However, the contributions of two- to three-ring PAHs increased with distance, whereas the contributions of four-ring PAHs decreased. Four PAH sources in soils around the two thermal power plants were identified by positive matrix factorization. Coal combustion was the main source of soil PAHs. Health-risk assessment based on toxic equivalency factors of benzo[a]pyrene indicated no risk of PAH contamination in soils around LG power plant and a low risk in those around XY power plant. This study highlights the distribution and sources of PAHs in soil around thermal power plants.
8

A sweet potato cinnamate 4-hydroxylase gene, IbC4H, increases phenolics content and enhances drought tolerance in tobacco

27%
Wang A., Zhu M., Luo Y., Liu Y., Li E., Kou M., Wang X., Zhang Y., Meng X., Zheng Y., Ma D.
Acta Physiologiae Plantarum
|
2017
|
tom 39
|
nr 12
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