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| 1 | Evaluation of Mixture Performance Recycled Asphalt Pavement Materials as Base Layer with or without Rejuvenator into the Asphalt显示文摘The binder properties were determined in accordance with Chinese standard such as ductility test, which allowed to measure the distance in centimeters that a standard briquette of asphalt had been stretched before breaking. Then, penetration test was carried out in order to know some properties of the asphalt, which are the hardness and the softness. Finally, softening point test was carried out in order to determine the temperature at which the bitumen attains a particular degree of softening under the specification of the test. According to Chinese standard for performance tests, firstly, Marshall test was carried out in order to measure the theoretical density, air voids, voids filled with asphalt, stability, flow, and voids in mineral aggregate of asphalt specimens. Secondly, Freeze-thaw splitting test was carried out in order to determine Splitting strength ratio. Finally, dynamic stability (rutting) test was carried out to determine average dynamic stability. Beside the tests carried out, the gradation of the extracted aggregate in accordance with American Association of State Highway and Transportation Officials was carried out to determine the dimensions of the particles weight distribution. Furthermore, both the percentage of recycled asphalt pavement materials and binder in mixture were determined to know how much of the new material during the mixture was needed. However, two specimens were used to evaluate the performance of recycled asphalt pavement materials. One specimen of recycled asphalt pavement materials was ten years old, and another one of recycled asphalt pavement materials was five years old. The results show that the conditions of the environment such as moisture, temperature, and age, decrease the ductility and penetration properties of binder when increase the softening point property of binder. Then the gradation of recycled asphalt pavement aggregate is of the required values to reuse in the mixture, while the flow ratio, the splitting strength ratio, and the dynamic stability ratio, are less than the required value test. With regard to the properties of mixture of recycled asphalt pavement material binder with rejuvenator, the results show that when the penetration and ductility versus percentage of rejuvenator increase, softening point versus percentage of rejuvenator decreases. Also, when the bitumen and rejuvenator percentage increase, the air voids decrease. Consequently, voids filled with asphalt and voids in the mineral aggregate increase. Moreover, the theoretical density and stability values decrease in a mixture containing four-point fifty percent to six percent of bitumen and rejuvenator, whereas the flow values increase. More interestingly, with four percent to four-point fifty percent mixture ratio of bitumen and rejuvenator, density, stability, and flow values increase. The splitting strength ratio values of mixtures and the dynamic stability test (rutting test) values of mixtures with forty percent of specimen one and specimen two respectively are greater than the required value of the standard test. In addition, the high percentage of rejuvenator increases the rut of pavement, in the same manner, the low percentage of rejuvenator induces low rut. In conclusion, the binder content from recycled materials without rejuvenator seems not be sufficient to be reused on the new pavement while the aged recycled material seems to be performed better than no aged recycled material with rejuvenator into bitumen. Then, the rejuvenator can influence the bitumen properties and performance of the pavement. Finally, the pavement made by only recycled pavement materials as a base layer appears to be more economical but cannot be more effective than the pavement made by mixture of new and recycled pavement materials as a base layer. | Alaye Quirin Engelbert Ayeditan LING XianZhang DONG Zejiao Bambou Ghislain | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，3： | 4 |
| 2 | The biosorption of Cr(VI) ions by dried biomass obtained from a chromium-resistant bacterium显示文摘biomaterials 的许多不同类型的 biosorption 潜力广泛地被学习了。然而,几乎由弄干的生物资源 Cr (VI ) 的 biosorption 机制上没有很少数据。从水的溶液的 Cr (VI ) 离子的简历移动因此从一个铬抵抗的细菌用弄干的生物资源被调查。细菌从从污水处理植物被获得的除去的污泥样品被孤立。平衡和运动实验在不同金属集中, pH 价值,和 biosorbents 剂量被执行。生物资源用扫描电子显微镜学和精力散的 X 光检查光谱学被描绘。在可以在 biosorption 过程起一个作用的杆菌仙影拳生物资源的功能的组被 Fourier 变换识别红外线的光谱学。biosorption 过程被发现是高度依赖的 pH 和为 Cr (VI ) 的吸附的最佳 pH 是 2.0 吗? | Paul Fabrice NGUEMA Zejiao LUO Jingjing LIAN | 2014 | Frontiers of Chemical Science and Engineering2014，8，4： | 4 |
| 3 | Chlorobenzenes Contamination in Soils/Sediments at a Site of Decommissioned Plant in Central China显示文摘China is one of the most important producers and suppliers of the chlorobenzenes(CBs), accounting for more than 50% of the world production. Although CBs contamination at the sites of chemical production factories is well-known, the knowledge on spatial distribution and contaminated degree of CBs are still limited. To better understand the occurrence of CBs, a total of 161 soil/sediment samples were collected from 36 sampling points within a 20 m deep from a site of decommissioned chlorobenzenes-producing factory in Wuhan City, Hubei Province, central China. The results showed that monochlorobenzene(MCB) is the predominant contaminants with the ΣCBs levels ranging from 0.05 to 8 600 mg/kg dry weight(dw) with a mean value of 384 mg/kg dw. The vertical distribution of CBs indicated that CBs may have clearly transported to deeper sections in the subsurface. Statistical analyses showed that there are no good correlations between the ΣCBs concentration with soil organic matter(SOM) content and the moisture content. | Mei Yu Zejiao Luo Yanxin Wang Junxia Li | 2018 | Journal of Earth Science2018，29，3： | 3 |
| 4 | Construction and evaluation of a multistage Mycobacterium tuberculosis subunit vaccine candidate Mtb10.4–HspX显示文摘 | Hongxia Niu Lina Hu Qing Li Zejiao Da Bingxiang Wang Kefeng Tang Qi Xin Hongjuan Yu Ying Zhang Yong Wang Xingming Ma Bingdong Zhu | 2011 | Vaccine2011，，51： | 1 |
| 5 | Highly efficient flexible perovskite solar cells with vacuum-assisted low-temperature annealed SnO2 electron transport layer显示文摘The demand for lightweight, flexible, and high-performance portable power sources urgently requires high-efficiency and stable flexible solar cells. In the case of perovskite solar cells(PSCs), most of the common electron transport layer(ETL) needs to be annealed for improving the optoelectronic properties,while conventional flexible substrates could barely stand the high temperature. Herein, a vacuumassisted annealing SnO_(2) ETL at low temperature(100℃) is utilized in flexible PSCs and achieved high efficiency of 20.14%. Meanwhile, the open-circuit voltage(V_(oc)) increases from 1.07 V to 1.14 V. The flexible PSCs also show robust bending stability with 86.8% of the initial efficiency is retained after 1000 bending cycles at a bending radius of 5 mm. X-ray photoelectron spectroscopy(XPS), atomic force microscopy(AFM), and contact angle measurements show that the density of oxygen vacancies, the surface roughness of the SnO_(2) layer, and film hydrophobicity are significantly increased, respectively. These improvements could be due to the oxygen-deficient environment in a vacuum chamber, and the rapid evaporation of solvents. The proposed vacuum-assisted low-temperature annealing method not only improves the efficiency of flexible PSCs but is also compatible and promising in the large-scale commercialization of flexible PSCs. | Xiaoguo Li Zejiao Shi Fatemeh Behrouznejad Mohammad Hatamvand Xin Zhang Yaxin Wang Fengcai Liu Haoliang Wang Kai Liu Hongliang Dong Farhan Mudasar Jiao Wang Anran Yu Yiqiang Zhan | 2022 | Journal of Energy Chemistry2022，31，4： | 1 |
| 6 | Research on Rheological Performance of SBS Modified Asphalt at Low Tempera- ture显示文摘 | Cao Liping Dong Zejiao Tan Yiqiu | 2009 | GeoHunan International Conference2009，，： | 1 |
| 7 | Stabilizing α-phase FAPbI3 solar cells显示文摘Organic–inorganic hybrid perovskite solar cells(PSCs)have been recognized as a promising and cost-effective photovoltaic technology with the power conversion efficiency(PCE) exceeding 25%[1–3]. The high efficiency is attributed to the exceptional optoelectronic properties, such as high absorption coefficient, long carrier diffusion length, low non-radiative recombination rate, and so on[4–7]. | Yaxin Wang Xin Zhang Zejiao Shi Lixiu Zhang Anran Yu Yiqiang Zhan Liming Ding | 2022 | Journal of Semiconductors2022，43，4： | 0 |
| 8 | Characteristics and Genesis of Acid Drainage Contamination from a Rock Tunneling Project Site显示文摘While acid mine drainage(AMD)issues have become a topic of global concern,few studies have focused on acid drainage problems of non-mining activities.We conducted field research and a series of laboratory experiments to investigate the characteristics,release processes and formation of acid drainage contamination.Spoil rock samples and adjacent surface water,groundwater,soil and sediment samples were collected at a railway tunnel construction site in central China,and various parameters,such as the p H,mineral ion concentrations,and heavy metal concentrations,were measured.Based on the measured concentrations,surface water and sediments were seriously contaminated by acids,sulfate salts and heavy metals.Contamination in surface water showed a decreasing tendency as the distance from the spoils increased,while that in sediments showed a greater influence of coprecipitation and adsorption processes of heavy metal ions.The eluviation experiments of three rock samples indicated that R2(silty fine sandstone)was the most likely major acid drainage contributor.Thiobacillus ferrooxidans was cultured and isolated from contaminated water to study the oxidation conditions during the release processes.The significant release of acid drainage when air and bacteria were both in the culture container suggested that oxygen and bacteria were necessary to produce acid drainage from spoils. | Yanyun Li Zejiao Luo Shihua Qi | 2024 | Journal of Earth Science2024，35，1： | 0 |
| 9 | Performance prediction of expressway pavement in high maintenance level areas based on cosine deterioration equation: A case study of Zhejiang Province in China显示文摘Accurate prediction of performance decay law is an important basis for long-term planning of maintenance strategy.The statistical regression prediction model is the most widely employed method to calculate pavement performance due to its advantages such as the small amount of calculation and good accuracy,but the traditional prediction model seems not applicable to the high maintenance level areas with excellent pavement conditions.In this paper,the service life and the cumulative number of the axle load were determined as the independent variables of prediction models of pavement performance.The pavement condition index(PCI)and rutting depth index(RDI)were selected as maintenance decision control indexes to establish the unified prediction model of PCI and RDI respectively by applying the cosine deterioration equation.Results reveal that the deterioration law of PCI presents an anti-S type or concave type and the deterioration law of RDI shows an obvious concave type.The prediction model proposed in this study added the pavement maintenance standard factor d,which brings the model parameterα(reflecting the road life)and the deterioration equations are more applicable than the traditional standard equations.It is found that the fitting effects of PCI and RDI prediction models with different traffic grades are relatively similar to the actual service state of the pavements. | Liping Cao Lingwen Li Chen Yang Bingtao Zhang Zejiao Dong | 2022 | Journal of Road Engineering2022，2，3： | 0 |
| 10 | Exposure-response of Cr(Ⅲ)-organic complexes to Saccharomyces cerevisiae显示文摘Hexavalent chromium[Cr(VI)]bioreduction produces soluble Cr(Ⅲ)-organic complexes.The Cr(Ⅲ)-organic complexes are relatively stable once they are formed,and no data about their toxicity were reported.Therefore,this study aims to investigate the bioavailability and toxicity of the soluble Cr(Ⅲ)-organic complexes.Saccharomyces cerevisiae L^(-1)wild type yeast strain was chosen as the model organism and Cr(Ⅲ)-citrate was selected as the representative compound of the Cr(Ⅲ)-organic complexes.The short-term chronic aquatic toxicity tests of the Cr(Ⅲ)-citrate was explored by measuring growth inhibition,direct viable cell count,dry biomass,biosorption,and the amount of CO_(2)production.Cr(Ⅲ)-citrate exerted a toxicity of 51 mg/L with an EC_(50),which was calculated from the percent growth inhibition.These toxicity data would be helpful to define the toxic potential of the organo-chromium-Ⅲcompounds in the environment. | Nivedita CHATTERJEE Zejiao LUO | 2010 | Frontiers of Environmental Science & Engineering2010，4，2： | 0 |
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