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| 1 | Rockburst mechanism research and its control显示文摘A new rockburst classification, innovative works in developing a ‘‘strainburst test machine' and an‘‘impact-induced rockburst test machine' that can reproduce rockbursts in laboratory were researched.New concepts were proposed regarding the stress paths that take into account both the static and dynamic stresses analogous to that at excavation boundaries for generating artificially-induced strainburst and impact-induced rockburst. As an important method for rockburst control, a novel energyabsorbing bolt was developed, which has a constant-resistance under both static and impact loadings and a large-elongation capacity for containing large deformations of rock masses under burst-prone conditions. | Manchao He Fuqiang Ren Dongqiao Liu | 2018 | International Journal of Mining Science and Technology2018，28，5： | 21 |
| 2 | Heavy metals contents in soil profiles of typical agricultural lands in Yixing,Jiangsu Province,China显示文摘The effect of land use pattern on the heavy metals(HMs)distribution in soil profiles was investigated in Yixing City,China,for the four typical types of land utilization,i.e.vegetable fields on the plain,paddy fields,tea gardens on hilly lands and bamboo groves.The variance of HMs concentration in the depth of 0-15 cm,15-30 cm,30-60 cm of soil profiles was compared among the different tillage ages. Results showed there was a notable accumulation of Cd,Hg,Cu,Pb,Zn and Cr in the soil profiles of vegetable fields and paddy fields causing a pollution of Cu,Hg and Cd in some profiles,while no remarkable accumulation of HMs in the soil profiles of the tea gardens and bamboo groves was found. The accumulation extent of HMs in the soil profiles of the four kinds of land use followed a sequence of vegetable fields>paddy fields>tea gardens>bamboo groves.The accumulation of HMs was mainly due to the industry,transportation,other urban human activities,and intensive use of fertilizers and pesticides.The downward leaching of HMs was relatively remarkable in the soil profiles of vegetable fields. There was an accumulation in surface and subsurface layers for Cd,Hg,Pb,Zn in the soil profiles of paddy fields and tea gardens,and for Cd,Hg in those of bamboo groves.Serious pollution effects of Hg, Pb,and Zn have been shown in the soil of vegetable fields.All the four kinds of agricultural land are basically free from the pollution of the external sources of As and Ni.With the increase of tillage time, the soil of vegetable and paddy fields will face the potential risk of HMs pollution,which mainly comes from Hg,Cd and Cu,whereas that of tea gardens and bamboo groves faces a relatively small risk. | Zhou ShengLu Liao FuQiang Wu ShaoHua Zhang HongFu Ren Kui | 2008 | Chinese Science Bulletin2008，53，S1： | 11 |
| 3 | Spatial distribution and sources of soil heavy metals in the outskirts of Yixing City,Jiangsu Province,China显示文摘City outskirts serve as the concentration centers for the pollutants discharged from various sources such as industry,agriculture and transportation.With the acceleration of industrialization and urbanization,the eco-environment of the city outskirts has become a hot spot of public concern.An analysis was conducted in this paper on the soil in the outskirts of Yixing City using frequency distribution functions.The heavy metal sources in this region had been divided into two components,i.e.natural background component and strong human disturbance component.The corresponding interpretation of the distribution pattern and features of heavy metal elements was presented by spatial analysis.The results showed that the strong human disturbance components of Hg,Pb,and Cu accounted for 36.9%, 26.7%,and 23.3%in their contents respectively,which indicated directly the serious effect of human activities on heavy metal contents.Hg and Pb,because of the human disturbance,showed the greatest spatial variability,and human activities intensified the heterogeneity of the spatial distribution.The anisotropic analysis showed the higher organisation of Hg and Zn in the direction of urban-rural transition,which indicated their spatial characteristics with urban-rural transition.Pb displayed distinctive structure in the vertical direction of urban-rural transition,which was largely controlled by highway distribution.Cu content in paddy fields was significantly higher than those of other land-use-types,and the agricultural non-point source pollution played an important role in the distribution pattern of Cu. | ShaoHua Wu ShengLu Zhou DeZhi Yang FuQiang Liao HongFu Zhang Kui Ren | 2008 | Chinese Science Bulletin2008，53，S1： | 7 |
| 4 | Study of lithium/polypyrrole secondary batteries with Lithium as cathode and polypyrrole anode显示文摘Lithium/polypyrrole (Li/PPy) batteries were fabricated using lithium sheet as cathode, PPy as anode, microporous membrane polypropylene/polyethylene/polypropylene (PP/PE/PP) composite as separator and LiPF6/ethylene carbonate-dimethyl carbonate-methyl ethyl carbonate (EC-DMC-EMC) as electrolyte. Polypyrrole was prepared by chemical polymerization. Certain fundamental electrochemical performances were investigated. Properties of the batteries were characterized and tested by SEM, galvanostatic charge/discharge tests, cyclic voltammetry (CV), and a.c. impedance spectroscopy. The influences of separator, morphology, and conductivity of PPy anode, cold-molded pressure, and electric current on the performances of the batteries were studied. Using PP/PE/PP membranes as separator, the battery showed good storage stability and cycling property. The conductivity of materials rather than morphology affected the behavior of the battery. The higher the conductivity, the better performances the cells had. Proper cold-molded pressure 20 MPa of the anode pellet would make the properties of the cells good and the fitted charge/discharge current was 0.1 mA. The cells showed excellent performance with 97%-100% coulombic efficiency. The highest discharge capacity of 95.2 mAh/g was obtained. | REN Li WANG Lixin AN Haoyuan ZHANG Fuqiang | 2007 | Rare Metals2007，26，6： | 6 |
| 5 | Characteristics of evolution of mining-induced stress field in the longwall panel:insights from physical modeling显示文摘The evolution of mining-induced stress field in longwall panel is closely related to the fracture field and the breaking characteristics of strata.Few laboratory experiments have been conducted to investigate the stress field.This study investigated its evolution by constructing a large-scale physical model according to the in situ conditions of the longwall panel.Theoretical analysis was used to reveal the mechanism of stress distribution in the overburden.The modelling results showed that:(1)The major principal stress field is arch-shaped,and the strata overlying both the solid zones and gob constitute a series of coordinated load-bearing structures.The stress increasing zone is like a macro stress arch.High stress is especially concentrated on both shoulders of the arch-shaped structure.The stress concentration of the solid zone in front of the gob is higher than the rear solid zone.(2)The characteristics of the vertical stress field in different regions are significantly different.Stress decreases in the zone above the gob and increases in solid zones on both sides of it.The mechanical analysis show that for a given stratum,the trajectories of principal stress are arch-shaped or inverselyarched,referred to as the‘‘principal stress arch’’,irrespective of its initial breaking or periodic breaking,and determines the fracture morphology.That is,the trajectories of tensile principal stress are inversely arched before the first breaking of the strata,and cause the breaking lines to resemble an inverted funnel.In case of periodic breaking,the breaking line forms an obtuse angle with the advancing direction of the panel.Good agreement was obtained between the results of physical modeling and the theoretical analysis. | Jinfu Lou Fuqiang Gao Jinghe Yang Yanfang Ren Jianzhong Li Xiaoqing Wang Lei Yang | 2021 | International Journal of Coal Science & Technology2021，8，5： | 3 |
| 6 | Shell cross-linked stearic acid grafted chitosan oligosaccharide self-aggre- gated micelles for controlled release of paclitaxel 显示文摘 | HU Fuqiang REN Guofei YUAN Hong | 2006 | Colloids and Surfaces B: biointerfaees2006，50，2： | 1 |
| 7 | Boosting xenon adsorption with record capacity in microporous carbon molecular sieves显示文摘Xenon/krypton(Xe/Kr)separation is an important task in industry,yet it remains challenging to develop adsorbents with high Xe/Kr selectivity and adsorption capacity of Xe,especially at low partial pressures.Herein,we report a series of microporous carbon molecular sieves(CMSs)for Xe/Kr separation.Those materials have ideal bimodal pore size distributions that not only provide substantial space for the accommodation of gas molecules,but also allow selective diffusion of gas molecules.Additionally,the carbon frameworks decorated with polar oxygen-containing functional groups afford higher affinity for Xe than Kr,which is proven by density functional theory(DFT)calculations and charge density difference analysis.The optimal CPVDC-700 exhibits a high selectivity of Xe/Kr and,more importantly,a record-high uptake of Xe(2.93 mmol g^(-1))at 0.2 bar and298 K,which is the highest among all the reported carbon adsorbents.Breakthrough experiments confirm the excellent performance of such CMSs for Xe/Kr separation,and the dynamic adsorption uptake of Xe and productivity of high-purity Kr are calculated to be 2.91 mmol g^(-1)and 208 m L g^(-1)(9.29 mmol g^(-1)),respectively,which also set up a new benchmark for Xe/Kr separation of carbon adsorbents. | Fuqiang Chen Xinlei Huang Liu Yang Zhiguo Zhang Qiwei Yang Yiwei Yang Dan Zhao Qilong Ren Zongbi Bao | 2023 | Science China Chemistry2023，66，2： | 1 |
| 8 | Shell cross-linked stearic acid grafted chitosan oligosaccharide self-ag- gregated micelles for controlled release of paclitaxel 显示文摘 | HU Fuqiang REN Guofei YUAN Hong | 2006 | Colloids and Surfaces B: Biointerfaces2006，50，： | 1 |
| 9 | Effect of Different Thawing Methods on Post-thaw Motility of Cow Semen in Cryopreservation Straws显示文摘The study was to investigate the effects of different thawing temperatures(5,15,40,75,90 ℃) and times(1- 120 s) on properties of post-thaw cow semen by detecting frozen-thawed semen motility,acrosome integrity and tail membrane integrity,further obtaining the optimal thawing method of straw frozen semen from dairy cow. The results showed that(1) Thawing of the straw frozen semen of dairy cow at 75 ℃ for 3 s yielded the highest semen motility,followed by 40 ℃for 20 s,and the least by low temperature 5 ℃ and room temperature 15 ℃ with a semen motility of 0. 3,moreover thawing at high temperature 90 ℃ was not suitable for large scale production due to the difficult control of the temperature;(2) The acrosome intact rate and plasma membrane integrity rate of semens thawed at90 ℃ were remarkably lower than that at 40 ℃ and 75 ℃ significantly(P < 0. 05),while its semen malformation rate was significantly higher than that at 40 ℃and 75 ℃(P < 0. 05);(3) The Survival time of semens at 37 ℃ varied largely among different thawing temperature,in detail by 40 ℃ > 75 ℃ > 90 ℃. In practice,the thawing method of straw frozen semen of dairy cow should be selected according to the specific circumstance and inseminated immediately,with the recommended condition of thawing at 75 ℃ for 3 s. If the thawed semen could not be inseminated immediately,the thawing should be performed at 20 s for 40 ℃to maintain the motility for a longer term. | Qiao Limin Guo Tong Qiao Fuqiang Yao Hua Xiao Xishan Hou Yinxu Fu Jingtao Ren Kang | 2014 | Animal Husbandry and Feed Science2014，6，4： | 1 |
| 10 | Extremely efficient electro-Fenton-like Sb(Ⅲ) detoxification using nanoscale Ti-Ce binary oxide: An effective design to boost catalytic activity via non-radical pathway显示文摘Environmental risks posed by discharge of the emerging contaminant antimony(Sb) into water bodies have raised global concerns recently.The toxicity of Sb has been shown to be species-dependent,with Sb(Ⅲ) demonstrating much greater toxicity than Sb(V).Here,we proposed an electrochemical filtration system to achieve rapid detoxification of Sb(Ⅲ) via a non-radical pathway.The key to this technology was an electroactive carbon nanotube filter functionalized with nanoscale Ti-Ce binary oxide.Under an electric field,in situ generated H_(2) O_(2) could react with the Ti-Ce binary oxide to produce hydroperoxide complexes,which enabled an efficient transformation of Sb(Ⅲ) to the less toxic Sb(V)(τ<2 s) at neutral pH.The impact of important operational parameters was assessed and optimized,and system efficacy could be maintained over a wide pH range and long-term operation.An optimum detoxification efficiency of> 90% was achieved using lake water spiked with Sb(Ⅲ) at 500 μg/L.The results showed that Ti/Ce-hydroperoxo surface complexes were the dominant species responsible for the non-radical oxidation of Sb(Ⅲ) based on extensive experimental evidences and advanced characterizations.This study provides a robust and effective strategy for the detoxification of water containing Sb(Ⅲ) and other similar heavy metal ions by integrating state-of-the-art advanced oxidation processes,electrochemistry and nano-filtration technology. | Yifan Ren Yanbiao Liu Fuqiang Liu Fang Li Chensi Shen Zhuangchun Wu | 2021 | Chinese Chemical Letters2021，32，8： | 0 |
| 11 | A method for detecting two-dimensional plane stress distribution in basin-type insulator based on critically refracted longitudinal wave显示文摘Basin-type insulator often has small cracks due to stress concentration.The current method cannot accurately reflect the stress condition of the insulator to find the stress concentration areas.To solve these problems,a method for detecting two-dimensional plane stress(δ_(1) andδ_(2))within different depth ranges in a basin-type insulator is proposed based on critically refracted longitudinal(LCR)wave.First,the acoustoelastic equation characterising the relationship between the variation of LCR wave propagation time and the plane stress was derived.Next,the propagation characteristics of LCR wave in epoxy resin samples were investigated.Then,the stress distribution within different depth ranges of the insulator subjected to hydraulic load was measured using the proposed method,including direction(θ),δ_(1) andδ_(2).The results show that the magnitude of the stress alone cannot accurately characterise the stress state.Points with equal distances to the centre have similar stress magnitudes,but their directions are not the same.With increasing depth,θremains essentially unchanged at the same location,whileδ1 andδ2 decrease,and the rate of decrease varies at different locations.Comparing the measured and simulated data,the results showed that they were in good agreement,and the maximum errors of stress value andθwere 0.69 MPa and 2.97°,respectively,which confirmed the feasibility and accuracy of the stress detection in the proposed method. | Zhaoyang Kang Fuqiang Ren Hongru Zhang Jingjing Yang Kaining Hou Qingquan Li Dongxin He Hongshun Liu Yongzhi Zhao Huaxin Wen | 2024 | High Voltage2024，9，1： | 0 |
| 12 | Mechanical behaviors of coal measures and ground control technologies for China's deep coal mines-A review显示文摘This paper reviews the major achievements in terms of mechanical behaviors of coal measures,mining stress distribution characteristics and ground control in China’s deep underground coal mining.The three main aspects of this review are coal measure mechanics,mining disturbance mechanics,and rock support mechanics.Previous studies related to these three topics are reviewed,including the geo-mechanical properties of coal measures,distribution and evolution characteristics of mining-induced stresses,evolution characteristics of mining-induced structures,and principles and technologies of ground control in both deep roadways and longwall faces.A discussion is made to explain the structural and mechanical properties of coal measures in China’s deep coal mining practices,the types and dis-tribution characteristics of in situ stresses in underground coal mines,and the distribution of mining-induced stress that forms under different geological and engineering conditions.The theory of pre-tensioned rock bolting has been proved to be suitable for ground control of deep underground coal roadways.The use of combined ground control technology(e.g.ground support,rock mass modification,and destressing)has been demonstrated to be an effective measure for rock control of deep roadways.The developed hydraulic shields for 1000 m deep ultra-long working face can effectively improve the stability of surrounding rocks and mining efficiency in the longwall face.The ground control challenges in deep underground coal mines in China are discussed,and further research is recommended in terms of theory and technology for ground control in deep roadways and longwall faces. | Hongpu Kang Fuqiang Gao Gang Xu Huaiwei Ren | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，1： | 0 |
| 13 | Effects of Storage Temperature on the Effective Activity of Straw Frozen Semen after Thawing显示文摘The aim was to discuss the optimal storage environment and proper insemination time after thawing of 0. 25 m L straw frozen semen. Straw frozen semen was thawed at 40 ℃ for 20 s,and then stored at 0- 4 ℃,14- 16 ℃,25- 27 ℃ for 2,4,6,8 and 10 h,respectively. The sperm motility was detected. After thawing,semen was stored at 0- 4 ℃ and 14- 16 ℃ for 10 h. Their sperm motilities( 0. 434 ± 0. 016 7 and 0. 423 ± 0. 019 6) had no significant differences( P> 0. 05) with initial thawing motility( 0. 441 ± 0. 030). Sperm motility reduced as the storage time prolonged at 25- 27 ℃. Sperm motility after 6 h had significant differences with that of initial thawing motility( P < 0. 05),and sperm motilities after 8 and 10 h showed extremely significant differences( P < 0. 01).Thus,sperm motility after thawing was still very high after stored at 0- 4 ℃ and 14- 16 ℃ within 10 h,which met the requirements for insemination. Under this temperature and time ranges,sperm could be carried over long distances,which had small effects on sperm quality and reached the expected insemination effects.However,under the temperature of 25- 27 ℃,semen should be used for insemination within 6 h after thawing. | Qiao Limin Ma Jianmin Qiao Fuqiang Yao Hua Xiao Xishan Hou Yinxu Fu Jingtao Ren Kang | 2015 | Animal Husbandry and Feed Science2015，7，4： | 0 |
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