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1

Effects of human activities in the Wei river basin on the lower Yellow river, China

100%
He L.
Polish Journal of Environmental Studies
|
2017
|
tom 26
|
nr 6
Water and soil conservation practices in the Wei River Basin (WRB) may influence the Lower Wei River (LWR) itself and the Lower Yellow River (LYR), of which the Wei is a tributary. Based on data of measured and natural runoff and suspended sediment load (SSL) in the WRB, the connections between runoff and SSL from the WRB and deposition in the LWR, the elevation of Tonggguan Hydrology Station, and deposition in the LYR are analyzed. For the compound effects of human activity and climate change in the WRB, the amount of deposition reduction in the LWR during 2000-2009 is about three times what it decreased during 1970-1979. For per square kilometers of soil conservation, the effect of human activities in the WRB on deposition in the LWR during period of 2000-09 is about four times that of the period of 1970-1979. As decreased runoff and SSL from the WRB, deposition in the LYR decreased during the periods of 1970-1979 and 1990-1999, while deposition in the LYR increased during the periods of 1980-1989 and 2000-2009. For the planned reservoir in the Jing River Basin, the decreased deposition in the LYR may be smaller than that of the LWR.
2

Effects of human activities in the middle drainage area on the lower channel as influenced by the Xiaobeiganliu River reach, Yellow River

100%
He L.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 3
The fluvial processes of sediment-laden flow running through the Xiaobeiganliu (XBGL) River reach changed dramatically after the year 2000. Thus, the connection between the sediment source area (area between Toudaoguai and Longmen) and the lower channel requires further analysis. This study aims to investigate the effects of human activities in the drainage area of Toudaoguai-Longmen on XBGL River reach and the Lower Yellow River (LYR). Prior to 1999, deposition in XBGL was positively correlated with inflow sediment and runoff entering the river reach. The correlation between these two variables became negative after 1999. The ratios between deposition in XBGL and change of runoff and sediment by human activities in the upper drainage area were 0 in 1971-1984, 0.15 in 1985-1998, and -0.39 in 1999-2012. For the changed deposition processes of the XBGL, the ratios between deposition in the LYR and change of runoff and sediment by human activities in the upper drainage area were 0.87 in 1971-1984, 0.92 in 1985-1998, and 2.33 in 1999-2012. The analyses revealed the important role of XBGL in sediment storage in the river system, where the decrease in inflow suspended sediment load of XBGL results in a likely increase in the outflow of the river reach.
3

Coupling analysis of connectivity between coarse sediment source areas and deposition area in the Yellow River, China

63%
He L., Yan M.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 2
As a coupling river system, watershed management in sediment source areas may influence downstream reach. However, the connectivity between water and sediment retention (WSR) in two coarse sediment source areas (tributaries entering the Inner Mongolia Reach, IMR, and tributaries entering the Middle Yellow River, MYR) and deposition in the Lower Yellow River (LYR) have rarely been compared. Experiential fitted models for each river segment (IMR, MYR, and LYR) are loosely linked to investigate the coupling relationship between source areas and deposition area. Analysis shows that, at the zonal scale, the connectivity between WSR in different zones and deposition reduction in different river reaches differs. WSR in tributaries of the IMR may benefit the local channel (IMR) with a priority ratio, and WSR in the stem channel of the IMR may benefit both the local (IMR) and the lower (LYR) channels with almost the same magnitude. WSR in the MYR may benefit the local channel (LT reach) and the lower channel (LYR), while the LYR has more propriety. At the zonal scale, the temporal scales over which changes in hillslopes occur also differ, as WSR in the IMY and MYR during the non-flood season may also contribute to deposition reduction in the MYR and LYR. In total, the loosely linked model may provide information of sediment along the whole river network.
4

A simulation-based nonlinear goal programming model for goundwater remediation systems design

51%
Li J., He L., Lu H.
Polish Journal of Environmental Studies
|
2015
|
tom 24
|
nr 2
This study proposes an integrated method that simulates and optimizes groundwater design and management in combination with goal programming, which establishes the equilibrium between technical and environmental constraints in a pump-and-treat system. This method is applied to a petroleum-contaminated site in Western Canada to identify optimal remediation strategies given a set of remediation scenarios. The significant influential factors are remediation duration, standard concentration levels, and total pumping rate. Results indicate that goal programming can greatly enhance the remediation effect under low contaminant concentrations. In the pump-and-treat system, wells I2, E1, and E3 are the dominant components, whereas wells M7 and M5 are sensitive to variations in the identified influential factors. These wells must therefore be monitored intentionally. Moreover, these factors influence one another in interaction. Thus, high total pumping rates do not always generate favorable outcomes, and a long remediation period is unnecessary. In conclusion, the three identified factors should be spontaneously considered in the general goal-programming framework.
5

Analysis of heavy metals of muscle and intestine tissue in fish - in Banan section of Chongqing from Three Gorges reservoir, China

51%
Zhang Z., He L., Li J., Wu Z.
Polish Journal of Environmental Studies
|
2007
|
tom 16
|
nr 6
949-958
The present study was carried out to investigate contamination of heavy metals in 19 fish species from the Banan section of Chongqing in the Three Gorges, yangtze River. The results showed that the mean concentra­tions of heavy metals were higher in intestine than muscle, except zinc in upper strata. In the fish inhabiting the upper strata, there were significant differences between mean concentrations of As, Cr, Cu and H in muscle and intestine (P <0.05). There were also significant differences between mean concentrations of Cr and Cu in muscle and intestine in the fish inhabiting middle strata. however, significant differences between mean concentrations of As, Cd, hg, Pb and zn were measured in fish inhabiting bottom strata in both intestine and muscle tissues (P <0.05). For the fish inhabiting different strata, the concentrations of As, Cd, Cr, Cu, H and Pb in muscle and intestine of the fish from bottom strata (BS) were higher than those in both upper strata (US) and middle strata (MS); whereas a higher concentration of zn was measured in muscle and intestine from fish inhabiting upper strata. Mean metal concentrations were found to be higher in age II than those in age I in Coreius heterodon (2- and 1-year odl fish respectively). The overall results indicated that fish muscle in the Banan section were slightly contaminated by heavy metals, but did not exceed Chinese food standards.
6

An Inexact Sequential Response Planning approach for optimizing combinations of multiple floodplain management policies

51%
Lu H., He L., Du P., Zhang Y.
Polish Journal of Environmental Studies
|
2014
|
tom 23
|
nr 4
This study proposes an inexact sequential response planning (ISRP) approach for floodplain management on the basis of two-stage stochastic programming techniques. It can facilitate rapid response decision making for upcoming severe flood disasters by efficiently operating available multiple control measures in a quantified manner. The case study considers a floodplain management problem where decision makers want to obtain a cost-effective combination of multiple floodplain management policies (i.e. constructing hydraulic engineering, flood diversion) for coping with the upcoming flooding disasters with various severity levels. Optimal management strategies obtained from ISRP are analyzed, following by the demonstration of extending potentials.
7

Bi-Level decision-making Approach for GHG emissions control and municipal solid waste management under parameter uncertainty: a case study in Beijing, China

51%
Chen Y., He L., Lu H., Li J.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 4
Greenhouse gas (GHG) emissions from municipal solid waste (MSW) management significantly contribute to high global warming potential (GWP). However, most studies have failed to facilitate identifying MSW management schemes capable of comprehensively meeting the goals from decision-makers at different hierarchical levels under uncertainties. This study develops an inexact bi-level linear programming (IBLP) model for collaborative control of GHG emissions and waste management in Beijing: MGU-MCL. The MGU-MCL model implies a leader-follower decision process, with the environmental sector providing the upper-level objective and the local authority dominating the lower-level objective. Then, an interactive fuzzy possiblistic approach is introduced to represent the satisfactory degrees of different decision-making levels. Results show that the MGU-MCL model decisions would reduce GHG emissions by about 9%, but increase management costs by 4% compared with the decisions from conventional models; the contribution of the landfill facilities to GHG emissions would be predominant, especially methane emissions; while the composting and incineration facilities would account for a large proportion of management cost. Further comparative analysis among the bi-level and single-level models indicates that the bi-level model could provide coordinated schemes under an integrated consideration of economic efficiency and environmental impact.
8
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Proteins and enzymatic systems in three varieties of Helianthus annuus L.

51%
Kalinowski A., Klimko M., He L., Kluza M.
Roczniki Akademii Rolniczej w Poznaniu. Botanika
|
2001
|
tom 04
The paper reports results of analysis of protein and eight enzymatic systems of three varieties of Helianthus annuus L. (Wielkopolski, Coril, and Frankasol) performed by three electrophoretic methods. Electrophoretic analyses allowed finding protein and isoenzymes markers for each of variety. The two interline hybrids Coril and Frankasol shared more features in common than the population variety Wielkopolski with each of the former. Mean values of the polymorphism index for the protein and the eight enzymes indicate that the variety Wielkopolski is more homogeneous than Coril and Frankasol.
9

Energetic asymmetry connected with energy flow changes in response to eutrophication: a study of multiple fish species in subtropical shallow lakes

39%
Fu H., Zhang H., He L., Sha Y., Zhao K., He Y., Xu J.
Polish Journal of Ecology
|
2019
|
tom 67
|
nr 4
10

Protective role of mucilage against Al toxicity to root apex of pea (Pisum sativum)

39%
Geng M., Xu M., Xiao H., Wang H., He L., Zhao Z., Yu M.
Acta Physiologiae Plantarum
|
2012
|
tom 34
|
nr 4
Mucilage can strongly bind Al in the rhizosphere. Although there are still debates about the role of mucilage in protection of the root apex from Al toxicity, we considered that it might be associated with the characteristics of Al adsorption in mucilage. When the mucilage was kept intact, the accumulation of Al and induction of callose in root tips of pea (Pisum sativum) remained lower; thus root elongation was less inhibited than when mucilage was removed under Al exposure in mist culture. Size exclusion chromatography showed both a high and a low molecular weight polysaccharide fraction from root mucilage. Aluminum was predominately detected in high molecular weight polysaccharides, which strongly bound cations. The results indicate that the persistence of mucilage does protect the root apex from Al toxicity by immobilizing Al in high molecular weight polysaccharides.
11

Application of saline to seeds enhances the biosynthesis of 2-acetyl-1-pyrroline in aromatic rice seedlings (Oryza sativa L.)

33%
Luo H., Liu J., Xing P., Lai R., Zhang T., Wang Z., He L., Tang X.
Acta Physiologiae Plantarum
|
2020
|
tom 42
|
nr 06
12

Vps41, a protein involved in lysosomal trafficking, interacts with caspase-8

33%
Wang L., Pan X., He L., Zhang R., Chen W., Zhang J., Lu M., Hua Z.-C.
Acta Biochimica Polonica
|
2013
|
tom 60
|
nr 1
 Caspase-8 is a member of the cysteine-aspartic acid protease (caspase) family which plays a central role in apoptosis and development. We screened caspase-8 interacting proteins from mouse T-cell lymphoma and 7.5-day embryo cDNA libraries by yeast two-hybrid system and obtained eleven positive clones, including Vacuolar protein sorting 41 (Vps41), a protein involved in trafficking of proteins from the late Golgi to the vacuole. The interaction of Vps41 with caspase-8 was confirmed by co-immunoprecipitation (co-IP) and co-localization studies in HEK293T cells. Co-IP experiments also showed that Vps41 binds to the p18 subunit of caspase-8 through its WD40 region and RING-finger motif. Furthermore, we found that overexpression of Vps41 promotes Fas-induced apoptosis in A549 human lung adenocarcinoma cells. The cleavage of caspase-3, a caspase-8 downstream effector, was increased when cells were transfected with Vps41-overexpressing plasmid. Together, these results suggest a novel interaction of caspase-8 with Vps41 and provide a potential role of Vps41 beyond lysosomal trafficking.
13

Missense mutations in IHH impair Indian hedgehog signaling in C3H10T1-2 cells: implications for brachydactyly type A1, and new targets for hedgehog signaling

27%
Guo S., Zhou J., Gao B., Hu J., Wang H., Meng J., Zhao X., Ma G., Lin C., Xiao Y., Tang W., Zhu X., Cheah K. S. E., Feng G., Chan D., He L.
Cellular and Molecular Biology Letters
|
2010
|
tom 15
|
nr 1
153-176
Heterozygous missense mutations in IHH result in Brachydactyly type A1 (BDA1; OMIM 112500), a condition characterized by the shortening of digits due to hypoplasia/aplasia of the middle phalanx. Indian Hedgehog signaling regulates the proliferation and differentiation of chondrocytes and is essential for endochondral bone formation. Analyses of activated IHH signaling in C3H10T1/2 cells showed that three BDA1-associated mutations (p.E95K, p.D100E and p.E131K) severely impaired the induction of targets such as Ptch1 and Gli1. However, this was not a complete loss of function, suggesting that these mutations may affect the interaction with the receptor PTCH1 or its partners, with an impact on the induction potency. From comparative microarray expression analyses and quantitative real-time PCR, we identified three additional targets, Sostdc1, Penk1 and Igfbp5, which were also severely affected. Penk1 and Igfbp5 were confirmed to be regulated by GLI1, while the induction of Sostdc1 by IHH is independent of GLI1. SOSTDC1 is a BMP antagonist, and altered BMP signaling is known to affect digit formation. The role of Penk1 and Igfbp5 in skeletogenesis is not known. However, we have shown that both Penk1 and Igfbp5 are expressed in the interzone region of the developing joint of mouse digits, providing another link for a role for IHH signaling in the formation of the distal digits.
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