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1

Construction of time-space structure model of deep stope and stability analysis

100%
Wen Z., Tan Y., Han Z., Meng F.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 6
To quantitatively characterize the evolution process of disaster-causing stress fields and to analyze the whole time domain characteristics of a stope from moving to stability, we constructed the four-dimensional time-space structure model of deep stope using PFC discrete element modeling software, and embedded transducers in the goaf area to monitor overlying strata movement characteristics. Targeting the gangue in the goaf area, the compression characteristics, energy absorption characteristics, and evolution of hulking coefficient over time during compaction are analyzed under different mining conditions. Results indicate that: 1. In the first stage of development of overlying strata, an intact time-space structure model of the stope cannot be formed. This means the stope structure has not reached final mechanical equilibrium. 2. Compression of the gangue fragments is an important mechanism of energy release of key strata as the strata are ruptured. The energy absorbed by the gangue reaches the maximum when the intact time-space structure model of the stope is formed. 3. The strength of the immediate roof is directly related to the development of the stope structure. 4. The development of the time-space structure of the stope is divided into two stages, which are marked by the time point when the advance distance is equal to the width of the working face. The above analysis can explain reasons for the delayed occurrence of dynamic disasters, laying a basis for reducing dynamic disasters.
2

Removal of sulfonamides in water using an electro/peroxydisulfate system catalyzed with activated carbon

100%
Wu N., Tan Y., Qian H., Wang Y.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 3
Sulfonamides are frequently detected in surface water and groundwater, which have the characteristics of low concentration, high toxicity, and being difficult to remove. In this study, an electro/peroxydisulfate system catalyzed with activated carbon (EC/AC/PS) was used to treat sulfamethoxazole (SMX). The results showed that the removal efficiency of SMX was 88.5% by the EC/AC/PS system. An increase of SMX concentration led to a decrease of SMX degradation efficiency, followed by an increase of intermediate products. Acidic conditions improved the degradation of SMX with optimum pH value of 5. A separate increase of AC concentration, PS concentration, and current density would enhance the degradation efficiency of SMX. But the extent was limited when reaching a certain level. There was an optimum plate spacing of 9 cm for SMX degradation efficiency. After repeating the use of AC 4 times, the removal efficiency of SMX still exceeded 80%. The free radical experiments showed that SO₄ •- played a leading role. The benzene ring structure of SMX was gradually decomposed with reaction. According to data analysis, the reaction kinetic model was Ct = C₀ exp(-1.100×10-3[AC]⁰‧⁴⁴⁷¹ [PS]⁰‧⁶³⁹⁷ [current density]⁰‧⁵⁶⁵⁸ [plate spacing]⁰‧⁸⁴⁰⁵t). This study implied that the EC/AC/PS process could effectively remove sulfonamide antibiotics in water, which was an environmentally friendly treatment method.
3

How air-drying affects DGT P results in calcareous soils

88%
Zhang Y., Wang Y., Tan Y., Li L., Wang X.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 3
Diffusive gradients in thin films (DGT) technology has been increasingly proved to be a promising tool for accurately predicting plant-available phosphorus (P) in soil using air-dried samples. However, the effects of the air-drying process on DGT-measured P are unknown compared to those of using moist samples in which plant roots survive throughout a growing season. We investigated the differences between the Olsen P and DGT P values in 58 air-dried and moist soil samples. The results showed that the discrepancy in the DGT P values between air-dried and moist samples increased with an increase in the organic P concentration in soils. It was presumed that the air-drying process converted some easily mineralized organic P into its inorganic form, thereby allowing it to be measured by the DGT method. The DGT P values in moist samples can be calculated from the values obtained in air-dried samples using the following equation: . However, the Olsen P values were highly correlated (R²= 0.95) when using air-dried and moist samples, although significant differences were observed. We concluded that the effects of air-drying on predicting soil available P using the Olsen P method can be neglected due to the high correlation relationship. The availability of easily mineralized organic P needs to be further explored.
4

The increasing aluminum content affects the growth, cellular chlorophyll a and oxidation stress of cyanobacteria Synechococcus sp. WH7803

88%
Shi R., Li G., Zhou L., Liu J., Tan Y.
Oceanological and Hydrobiological Studies
|
2015
|
tom 44
|
nr 3
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Short-term variation in zooplankton community from Daya Bay with outbreaks of Penilia avirostris

88%
Li K., Yin J., Tan Y., Huang L., Song X.
Oceanologia
|
2014
|
tom 56
|
nr 3
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Potential risk of Mesodinium rubrum bloom in the aquaculture area of Dapeng’ao cove, China: diurnal changes in the ciliate community structure in the surface water

76%
Liu H., Song X., Huang L., Tan Y., Zhong Y., Huang J. R.
Oceanologia
|
2012
|
tom 54
|
nr 1
Diurnal changes in the structure of the ciliate community in surface waters were studied in the aquaculture area of Dapeng’ao cove, China. Two periods of heavy rainfall occurred during the study period, intensifying water column stratification and influencing the water’s properties. A total of 21 ciliate taxa from 15 genera were identified; the dominant species was Mesodinium rubrum. The maximum abundance of M. rubrum reached 3.92×104 indiv. dm−3, contributing 95.1% (mean value) to the total ciliate abundance. Diurnal changes in M. rubrum abundance were highly variable, the driving force probably being irradiance and food availability. The results suggest that M. rubrum may form blooms in aquaculture areas when there is a suitable physical regime with enriched nutrients, which is potentially harmful to the fish-farming industry.
7

Response of picophytoplankton to a warm eddy in the Northern South China Sea

76%
Wang J., Tan Y., Huang L., Ke Z., Tan J., Hu Z., Wang Q.
Oceanological and Hydrobiological Studies
|
2016
|
tom 45
|
nr 2
8

Molecular cloning, sequence characteristics analysis and tissue expression profiles of three novel genes RhoB, RhoF and RhoH from the Black-boned sheep (Ovis aries)

64%
Li W., Chen Z., Yang L., Tan Y., He Y., Liu Q., Wu G., Peng B., Mao H., Deng W.
Journal of Animal and Feed Sciences
|
2009
|
tom 18
|
nr 2
9

Comprehensive genomic analysis and expression profiling of Argonaute gene family and examination of their regulatory roles in water-use efficiency and abiotic stress responses in apple

64%
Zhou S., Ma S., Li M., Li C., Gong X., Guan Q., Tan Y., Shao Y., Li C., Ma F.
Acta Physiologiae Plantarum
|
2016
|
tom 38
|
nr 09
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Development of an indirect ELISA based on glycoprotein B gene for detecting of Feline herpesvirus type 1

64%
Tan Y., Dong G., Niu J., Guo Y., Yi S., Sun M., Wang K., Hu G.
Polish Journal of Veterinary Sciences
|
2019
|
tom 22
|
nr 3
11

Talin1 regulates the endometrial epithelial cell adhesive capacity by interacting with LASP1 and Vitronectin

64%
Li J., Lin J., Yang Y., Chen S., Huang P., Jiang R., Tan Y., Huang Y., Mo L., Qin A.
Reproductive Biology
|
2020
|
tom 20
|
nr 2
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