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1

Immunotherapy of rheumatoid arthritis targeting inflammatory cytokines and autoreactive T cells

100%
Chen G.
Archivum Immunologiae et Therapiae Experimentalis
|
2010
|
tom 58
|
nr 1
27-36
2

Research on big data attribute selection method in submarine optical fiber network fault diagnosis database

100%
Chen G.
Polish Maritime Research
|
2017
|
tom 24
|
nr Special Issue S3
At present, in the fault diagnosis database of submarine optical fiber network, the attribute selection of large data is completed by detecting the attributes of the data, the accuracy of large data attribute selection cannot be guaranteed. In this paper, a large data attribute selection method based on support vector machines (SVM) for fault diagnosis database of submarine optical fiber network is proposed. Mining large data in the database of optical fiber network fault diagnosis, and calculate its attribute weight, attribute classification is completed according to attribute weight, so as to complete attribute selection of large data. Experimental results prove that ,the proposed method can improve the accuracy of large data attribute selection in fault diagnosis database of submarine optical fiber network, and has high use value
3
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Content available

Physical properties of cumin and caraway seeds

51%
Zare D., Bakhshipour A., Chen G.
International Agrophysics
|
2013
|
tom 27
|
nr 4
Physical properties of cumin and caraway seeds were measured and compared at constant moisture content of 7.5% w.b. The average thousand mass of grain, mean length, mean width, mean thickness, equivalent diameter, geometric meann diameter, surface area, volume, sphericity, aspect ratio, true density, bulk density and porosity were measured for cumin and caraway. There are significant differences (p<0.01) in most physical properties of cumin and caraway, except porosity and sphericity.
4
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Content available

The response of cyclonic eddies to typhoons based on satellite remote sensing data for 2001-2014 from the South China Sea

51%
Yu F., Yang Q., Chen G., Li Q.
Oceanologia
|
2019
|
tom 61
|
nr 2
5

Integrating truck arrival management into tactical operation planning at container terminals

51%
Yang Z.-Z., Chen G., Song D.-P.
Polish Maritime Research
|
2013
|
tom 20
|
nr Special Issue S1
Truck arrival management (TAM) has been recognized as an effective solution to alleviate the gate congestion at container terminals. To further utilize TAM in improving the overall terminal performance, this study integrates TAM with the other terminal operations at a tactical level. An integrated planning model and a sequential planning model are presented to coordinate the major terminal planning activities, including quayside berth allocation, yard storage space allocation and TAM. A heuristic-based genetic algorithm is developed to solve the models. A range of numerical examinations are performed to compare two planning models. The result shows that: the integrated model can improve the terminal performance significantly from the sequential model alone, particularly when the gate capacity and the yard capacity are relatively low; whereas the sequential model is more efficient than the integrated model in terms of computational time
6

Functional analysis of tomato LeEIL1 in an Arabidopsis ein2 mutant

45%
Pan Y., Chen G., Lu C., Chen X., Hu Z.
Acta Physiologiae Plantarum
|
2011
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tom 33
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nr 2
The ETHYLENE-INSENSITIVE3 (EIN3)/EIN3- Like (EIL) EIN3/EILs, novel nuclear proteins, are located at the downstream position of the ethylene signal transduction pathway. LeEIL1, which is expressed in fruit throughout ripening, is key transcription factor in the ethylene signaling pathway in tomato. To reveal its function, the LeEIL1 gene has been transformed into and expressed in the ein2 mutant of Arabidopsis. The expression levels of the transgene in the single copy line, LeEIL1-ein2-b, were higher than those in the multiple-copy line, LeEIL1-ein2-a. The ethylene-insensitive phenotype of the ein2 mutant plants has been partially recovered by expression of LeEIL1. The florescence of LeEIL1-ein2-a and LeEIL1- ein2-b exceeded that of the ein2 mutant but was still less than that of wild type of Arabidopsis. The expression of four pathology-related genes (AtPR3, 4, AtPDF1.2 and AtGST2) has been analyzed in LeEIL1 transgenic ein2 mutant plants. The expression of AtPR3 and AtPR4, which was reduced in the ein2 mutant, was enhanced in the two transgenic Arabidopsis plants. The expression of the AtPDF1.2 gene was unaffected in the two transgenic Arabidopsis lines, the ein2 mutant and wild-type Arabidopsis plants. In addition, the expression level of AtGST2 in transgenic Arabidopsis plants was lower even than that in ein2 mutant and wild-type Arabidopsis plants.
7

The abundance of certain metabolites responds to drought stress in the highly drought tolerant plant Caragana korshinskii

45%
Zhang J., Chen G., Zhao P., Zhou Q., Zhao X.
Acta Physiologiae Plantarum
|
2017
|
tom 39
|
nr 05
8

Motion characteristics after ricochet: an experimental investigation

45%
Chen G., Hu J., Liu A., Feng J., Hu Q.
Polish Maritime Research
|
2020
|
tom 27
|
nr 2
9

Differential responses of two rice varieties to perchlorate stress

45%
Chen G., He H., Gao H., Li H., Zhang Z.
Polish Journal of Environmental Studies
|
2015
|
tom 24
|
nr 1
Two rice varieties, one perchlorate-tolerant (Gannuoxiang, GN) and the other perchlorate-sensitive (IR65598-112-2, IR), were exposed to 20, 200, and 400 mg/kg soil perchlorate to investigate their physiological responses and perchlorate accumulation. It was found that perchlorate decreased leaf chlorophyll content in both rice varieties. The activities of superoxide dismutase (SOD) and catalase (CAT) decreased while peroxidase (POD) increased in both rice varieties under perchlorate stress at tillering stage. Rice variety IR showed earlier physiological response and was more affected by perchlorate than GN. Perchlorate induced physiological response in different ways depending on perchlorate contamination level, rice variety, and growing stage. Perchlorate concentration in leaves was significantly higher than that in roots, stems and seeds. Perchlorate accumulation in IR leaves was higher than GN, but GN stored more perchlorate in its edible portion at low perchlorate level. These results indicated that high sensitivity of the rice variety IR to perchlorate stress might be due to antioxidant enzymes in perchlorate-detoxification and its higher perchlorate accumulation in leaves.
10
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Calibration of backward-in-time model using drifting buoys in the East China Sea

45%
Yu F., Li J., Zhao Y., Li Q., Chen G.
Oceanologia
|
2017
|
tom 59
|
nr 3
In the process of oil exploitation and transportation, large amounts of crude oil are often spilled, resulting in serious pollution of the marine environment. Forecasting oil spill reverse trajectories to determine the exact oil spill sources is crucial for taking proactive and effective emergency measures. In this study, the backward-in-time model (BTM) is proposed for identifying sources of oil spills in the East China Sea. The wind, current and random walk are three major factors in the simulation of oil spill sources. The wind drag coefficient varies along with the uncertainty of the wind field, and the random walk is sensitive to various traits of different regions, these factors are taken as constants in most of the state-of-the-art studies. In this paper, a self-adaptive modification mechanism for drift factors is proposed, which depends on a data set derived from the drifter buoys deployed over the East China Sea shelf. It can be well adapted to the regional characteristics of different sea areas. The correlation factor between predicted positions and actual locations of the drifters is used to estimate optimal coefficients of the BTM. A comparison between the BTM and the traditional method is also made in this study. The results presented in this paper indicate that our method can be used to predict the actual specific spillage locations.
11

Effects of variable sulfur supply on the accumulation, subcellular distribution, and chemical forms of cadmium in Hydrilla verticillata

45%
Li G., Li Q., Wang L., Chen G., Zhang D.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 3
Indoor experiments were performed to determine the accumulation, subcellular distribution, and chemical forms of Cd at five S levels in Hydrilla verticillata. The Cd content increased from 1.229 mg/g to 3.329 mg/g in leaves, and decreased from 2.794 mg/g to 1.023 mg/g in roots, respectively. Excess S supply stimulated Cd assimilation in leaves as Cd accumulation was inhibited in roots. The Cd content in leaves at subcellular levels revealed that Cd was stored mainly in the soluble fraction (71.9-88.2%), and in small quantities in the cell wall (6.1-22.4%) and cell organelles (4.8-6.9%). As S increased, the Cd content in leaf soluble fractions and cell walls increased remarkably. The content of NaCl-extracted Cd in leaves increased as S supply increased, and this parameter was much higher than that of other Cd forms. In leaves, the Cd concentrations in the cell walls were significantly correlated with the chemical forms extracted by HAc, HCl, and NaCl, with correlation coefficients of 0.985, 0.964, and 0.957, respectively. The high correlation indicated that Cd in soluble fractions or cell walls was mainly in the form of pectates/protein, phosphate, and oxalate. The application of S alleviated Cd-induced oxidative stress by increasing the proline accumulation. Furthermore, sulfhydryl proteins such as glutathione and cysteine may play a crucial role in the reversal of Cd-induced oxidative stress.
12

Effects of hybrid giant napier biochar on cadmium migration in a cabbage-soil system contaminated with cadmium and butachlor

45%
He H., Pan J., Yu P., Chen G., Li H.
Polish Journal of Environmental Studies
|
2017
|
tom 26
|
nr 2
We investigated the effects of high-productivity plant hybrid giant Napier (HGN)-derived biochars prepared at different pyrolysis temperatures on Cd migration in a soil-cabbage system contaminated with Cd and butachlor. The results showed that with the enhancement amount of biochar applied, soil pH and electrical conductivity (EC) increased, whereas the available Cd content dropped significantly (P<0.05). The maximum decreasing value (66.08%) of the available Cd content was observed, while with 5% biochar prepared at 400ºC. Further application of this biochar caused a significant biomass increase and a Cd content decrease of cabbage (P<0.05). Notably, the cabbage biomass even increased to 573.58%. The application inhibited Cd migrations from the soil to the underground part and, successively, the overground part of the cabbage, leading to reduced bioaccumulation of Cd. With 5% biochar prepared at 400ºC, the maximum decrease of the Cd content reached up to 90% in the aboveground part and 70% in the underground part of cabbage, respectively. Hence, the investigation demonstrates that high-productivity HGN-derived biochar can be a good candidate for immobilizing Cd and reducing its bioaccumulation.
13

Effects of progressive drought stress on the physiology, antioxidative enzymes and secondary metabolites of Radix Astragali

45%
Jia X., Sun C., Li G., Li G., Chen G.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 12
The dried roots of Radix Astragali are widely used in traditional Chinese medicine, and flavonoids present in the root of this herb have been implicated in its bioactivity. We subjected 2-year-old Astragalus membranaceus Bge. var. mongholicus (Bge.) Hsiao to a progressive drought stress over 14 days of water withholding and studied the physiological and biochemical responses and secondary metabolite accumulation. Results indicated that drought stress reduced relative water content, reduced yield, but increased electrolyte leakage, malondialdehyde, proline and soluble sugar content. Mild and moderate drought stress enhanced some antioxidative enzyme activity to protect plants from damaging, but antioxidative enzyme activity was limited by severe stress. The calycosin- 7-O-β-D-glycoside and ononin content of plant roots was enhanced with degree of drought stress, whereas calycosin and formononetin levels did not differ significantly until 14 days. These results demonstrate that Radix Astragali can adapt to water stress by up-regulating antioxidant enzymes and accumulation of osmotic agents, and a certain degree of drought stress can enhance accumulation of some flavonoids, potentially facilitating higher yields of pharmacological activity of calycosin-7-O-β-D-glycoside production.
14

Effects of drought stress on the antioxidant system, osmolytes and secondary metabolites of Saposhnikovia divaricata seedlings

45%
Men Y., Wang D., Li B., Su Y., Chen G.
Acta Physiologiae Plantarum
|
2018
|
tom 40
|
nr 11
15

Effects of Na2CO3 and NaCl stresses on the antioxidant enzymes of chloroplasts and chlorophyll fluorescence parameters of leaves of Puccinellia tenuiflora (Turcz.) scribn.et Merr.

39%
Wang Y., Sun G., Suo B., Chen G., Wang J., Yan Y.
Acta Physiologiae Plantarum
|
2008
|
tom 30
|
nr 2
Antioxidant enzymes in chloroplasts and chlorophyll fluorescence parameters of leaves of Puccinellia tenuiflora (Turcz.) scribn.et Merr. under isotonic Na2CO3 and NaCl stresses were studied. Ascorbate peroxidase (APX) and superoxide dismutase (SOD) activities showed a similar increasing trend and then decreased with the decreasing osmotic potential of culture solution, peaking at –4.74 x 10⁵ Pa under NaCl stress and at –3.40 x 10⁵ Pa under Na2CO3 stress. APX, glutathione transferase and SOD activities were higher under NaCl stress than those under Na2CO3 stress, and higher activities of antioxidant enzymes in chloroplasts were accompanied by lower MDA content under NaCl stress. Fv/Fm, Fv/Fo and Fv'/Fm' all initially increased and then decreased with the decreasing osmotic potential of culture solution, while ΦPSII, qNP and HDR showed a constant increase. Fv/Fm, Fv/Fo, ΦPSII and qNP under NaCl stress were also shown to be higher than those under Na2CO3 stress. The present study suggested that acidity played an important role in the hurt to Puccinellia tenuiflora seedlings, which was due to higher activities of antioxidant enzymes, qNP and ΦPSII, and the Na2CO3 resistance to Puccinellia tenuiflora was also supposed to be less than NaCl resistance in present work.
16

The phosphorylation of an actin depolymerizing factor by a calcium-dependent protein kinase regulates cotton fiber elongation

39%
Huang Q.-S., Chen X.-J., Li J.-P., Hao X.-Y., Chen G., Zumuremu, Shao L.
Acta Physiologiae Plantarum
|
2014
|
tom 36
|
nr 10
A cotton fiber is a single and highly elongated ovule epidermal cell. However, the mechanism that governs the development of fiber traits remains unclear. In this study, we cloned a calcium-dependent protein kinase (GhCPK1) and an actin depolymerizing factor (GhADF1) from Gossypium hirsutum. Real-time PCR analyses indicated that the expression of GhCPK1 and GhADF1 correlated with the elongation pattern of cotton fibers. Yeast two-hybrid assays using full-length GhCPK1 and truncated forms of GhCPK1 as baits identified GhADF1 as an interactor of GhCPK1. Furthermore, GhCPK1 is capable of phosphorylating GhADF1 in vitro in a calcium-dependent manner, and the phosphorylation of GhADF1 by GhCPK1 occurs on the Ser-6 of GhADF1. In addition, we observed that the heterologous expression of the GhCPK1 gene induced longitudinal growth of the host cells by 3.18-fold, with no apparent effect on other aspects of the host cells. The results strongly suggest that GhCPK1 may regulate the function of GhADF1 by phosphorylating this protein during cotton fiber elongation.
17

Effects of heavy metals (Cd, Pb, Cu, Zn, and Ni) on Ipomoea aquatica Forsk. Growth in soil containing metal-biochar application

39%
Yu B., Li D., Zhang R., He H., Li H., Chen G.
Polish Journal of Environmental Studies
|
2020
|
tom 29
|
nr 4
18
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Identifcation of novel and conserved microRNAs involved in fruit development and ripening in Fragaria vesca

39%
Han Y., Chen G., Zhou H., Zhang Q., Qin L., Xing Y.
Acta Societatis Botanicorum Poloniae
|
2019
|
tom 88
|
nr 2
19
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Content available

An improved Otsu method for oil spill detection from SAR images

39%
Yu F., Sun W., Li J., Zhao Y., Zhang Y., Chen G.
Oceanologia
|
2017
|
tom 59
|
nr 3
In recent years, oil spill accidents have become increasingly frequent due to the development of marine transportation and massive oil exploitation. At present, satellite remote sensing is the principal method used to monitor oil spills. Extracting the locations and extent of oil spill spots accurately in remote sensing images reaps significant benefits in terms of risk assessment and clean-up work. Nowadays the method of edge detection combined with threshold segmenta- tion (EDCTS) to extract oil information is becoming increasingly popular. However, the current method has some limitations in terms of accurately extracting oil spills in synthetic aperture radar (SAR) images, where heterogeneous background noise exists. In this study, we propose an adaptive mechanism based on Otsu method, which applies region growing combined with both edge detection and threshold segmentation (RGEDOM) to extract oil spills. Remote sensing images from the Bohai Sea on June 11, 2011 and the Gulf of Dalian on July 17, 2010 are utilized to validate the accuracy of our algorithm and the reliability of extraction results. In addition, results according to EDCTS are used as a comparator to further explore validity. The comparison with results according to EDCTS using the same dataset demonstrates that the proposed self-adapting algorithm is more robust and boasts high-accuracy. The accuracy computing by the adaptive algorithm is significantly improved compared with EDCTS and threshold method.
20

Comparative response of two wucai (Brassica campestris L.) genotypes to heat stress on antioxidative system and cell ultrastructure in root

39%
Yuan L., Liu S., Zhu S., Chen G., Liu F., Zou M., Wang C.
Acta Physiologiae Plantarum
|
2016
|
tom 38
|
nr 09
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