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| 1 | Characteristics of acoustic emission signals in damp cracking coal rocks显示文摘A uniaxial load experiment on coal rocks at different stress rates was carried out, based on the characteristics of acoustic emission (AE) signals in cracking coal rocks, decomposition, de-noising and reconstruction for the AE signals through wavelet packet transform for solving the current problems created by the presence of noise in AE signals and the existing problems in AE signal processing. The results show that the various characteristics of AE signals in coal rocks cracking under different situations can be clearly reflected, after the AE signals are de-noised by the wavelet packet. Compared to dry coal rocks, the number of AE occurrences in damp coal rocks was significantly reduced, as well as the average amplitude. The number of AE occurrences in damp and dry coal rocks clearly increased with increases in the loading rate, but the largest amplitude of the AE signals in damp coal rocks has been reduced. There is no clear evidence of change in dry coal rocks. | TANG Shoufeng, TONG Minming, HU Junli, HE Xinmin School of Information and Electrical Engineering, China University of Mining & Technology, Xuzhou 221008, China | 2010 | Mining Science and Technology2010，20，1： | 17 |
| 2 | Maximal Dimension of Invariant Subspaces to Systems of Nonlinear Evolution Equations显示文摘In this paper,the dimension of invariant subspaces admitted by nonlinear systems is estimated under certain conditions.It is shown that if the two-component nonlinear vector differential operator F=(F 1,F 2) with orders {k 1,k 2 } (k 1 ≥ k 2) preserves the invariant subspace W 1 n 1 × W 2 n 2 (n 1 ≥ n 2),then n 1 n 2 ≤ k 2,n 1 ≤ 2(k 1 + k 2) + 1,where W q n q is the space generated by solutions of a linear ordinary differential equation of order n q (q=1,2).Several examples including the (1+1)-dimensional diffusion system and Ito 's type,Drinfel'd-Sokolov-Wilson's type and Whitham-Broer-Kaup's type equations are presented to illustrate the result.Furthermore,the estimate of dimension for m-component nonlinear systems is also given. | Shoufeng SHEN Changzheng QU Yongyang JIN Lina JI | 2012 | Chinese Annals of Mathematics,Series B2012，33，2： | 13 |
| 3 | A SYBR-Green I quantitative Real-time Reverse Transcription-PCR assay for rabies viruses with different virulence显示文摘Dear Editor,To establish a more specific diagnostic assay than thecurrent methods for rabies virus(RABV)infection in ca-nines and wildlife species,we developed a SYBR-GreenI quantitative real-time reverse transcription-PCR(RT-PCR).Three primers were designed and synthesized:oneof which,located within the leader sequences and target-ed for the whole viral genome amplification to obtain | Lindong Wang Ye Liu Shoufeng Zhang Ying Wang Jinghui Zhao Fuchun Miao Rongliang Hu | 2014 | Virologica Sinica2014，29，2： | 6 |
| 4 | All-solid-state BiVO4/ZnIn2S4 Z-scheme composite with efficient charge separations for improved visible light photocatalytic organics degradation显示文摘Constructing a Z-scheme is a significant approach to improve the separation of photogene rated carriers for effective organic pollutant degradation.Herein,a BiVO4/ZnIn2S4(BZ) Z-scheme composite was successfully synthesized,and applied to photodegrade methyl orange(MO) irradiated by a LED lamp.Anchoring the BiVO4 on the ZnIn2S4 nanoparticles promoted the separation of photogenerated electronholes and broadened the light response range.The detailed characterizations,including surface morphology,elements valence state,and photocurrent performance,demonstrated that the enhanced separation of photogenerated carriers was the pivotal reason for the enhanced photocatalysis reaction.Benefiting from the excellent photocatalytic characteristics,the 5% mass ratio of BZ composite presented the highest MO degradation rate of 0.00997 min^-1,which was 1.9 and 10.3 times greater than the virgin ZnIn2S4 and BiVO4,respectively.Furthermore,the BZ hybrid materials indicated a well photo-stability in the four recycling tests. | Deling Yuan Mengting Sun Shoufeng Tang Yating Zhang Zetao Wang Jinbang Qi Yandi Rao Qingrui Zhang | 2020 | Chinese Chemical Letters2020，31，2： | 5 |
| 5 | Applicable conditions for a classification system of aquifer-protective mining in hallow coal seams显示文摘Based on the conclusions of domestic and foreign research, we have analyzed the collapse-fall characteristics of overlying strata and the mechanism of aquifer-protective mining in shallow coal seam working faces at the Shendong Mine. We have selected the height of the water-conducting fracture zone in overlying strata as a composite index and established the applicable conditions of aquifer-protective mining in shallow coal seams with a multi-factor synthetic-index classification method. From our calculations and analyses of variance, we used factors such as the overlying strata strength, mining disturbing factors and rock integrity as related factors of the composite index. We have classified the applicable conditions of aquifer-protective mining in shallow coal seams into seven types by comparing the result of the height of water-conducting fractured zones of long-wall and short-wall working faces with the thickness of the bedrock, the thickness of the weathered zone and the size of safety coal-rock pillars. As a result, we propose the preliminary classification system of aquifer-protective mining in shallow coal seams. It can provide a theoretical guidance for safe applications of aquifer-protective mining technology in shallow coal seams under similar conditions. | Liu Yude Zhang Dongsheng Fan Gangwei Yah Shoufeng | 2011 | Mining Science and Technology2011，21，3： | 4 |
| 6 | BER Performance of FSO Communication System with Differential Signaling over Correlated Atmospheric Turbulence Fading显示文摘Free space optical(FSO) communication system with differential signaling possesses the advantage of requiring no channel state information and avoiding computational load or link throughput reduction compared to the systems with conventional receivers. In this work, we investigate bit error rate(BER) performance of this system over partially and fully correlated atmospheric turbulence fading. In order to conduct the above analysis, we obtain a probability density functions(PDF) of the channel fading on the differential signals and derive our instantaneous BER using differential signaling scheme. Based on these results, we develop two closed-form mathematical expressions for the average BER under fully correlated and partially correlated fading in the convergent infinite series confirmed by Cauchy’s ratio test. The accuracy of the derived BER expressions is demonstrated by the Monte Carlo simulations, and the analyses for the effects of the system parameters on the BER performance are provided. | Xiaoyan Li Xiaohui Zhao Peng Zhang Shoufeng Tong | 2020 | China Communications2020，17，4： | 3 |
| 7 | Fox- and raccoon-dog–associated rabies outbreaks in northern China显示文摘Dear Editor,Rabies is a generally fatal disease caused by the rabies virus(RABV),and is transmitted mainly by Carnivora and Chiroptera(Fooks A R,et al.,2014;Tao X,et al.,2013).In China,stray dogs and some wild animals(e.g.,Chinese ferret badgers,foxes,and raccoon dogs)are the principal reservoirs for RABV(Hu R L,et al.,2009).Historically,rabies in wild foxes and raccoon dogs(Nyctereutes procyonoides)was recorded in the | Ye Liu Shoufeng Zhang Jinghui Zhao Fei Zhang Nan Li Hai Lian Wurengege Shiyu Guo Rongliang Hu | 2014 | Virologica Sinica2014，29，5： | 3 |
| 8 | Ultrasound-assisted microfeeding of fine powders显示文摘Ultrasonic microfeeding of powders is a new and promising method for use in solid freeforming and pharmaceutical dosing. In this work, computer-controlled microfeeding systems using ultrasonic vibration of a capillary were built. A wide range of controlled, stable rates of flow and switching control were achieved in the acoustic vibration system and uniform powder doses were obtained in the ultrasonic system. Experimental results show that nozzle diameter, transmission fluid depth, waveform, voltage amplitude, frequency and oscillation duration all influence the dose mass. Among these factors, nozzle diameter, voltage amplitude and oscillation duration can be best used to control the dose mass. An artificial neural network (ANN) technique was applied to predict the dose mass. Based on these research results, four types of microfeeding were proposed. | Xuesong Lu Shoufeng Yang Julian R.G. Evans | 2008 | Particuology2008，6，1： | 2 |
| 9 | Ferric ion-ascorbic acid complex catalyzed calcium peroxide for organic wastewater treatment:Optimized by response surface method显示文摘Hydrogen peroxide(H_(2)O_(2))disproportionation,iron precipitation,and narrow pH range are the drawbacks of traditional Fenton process.To surmount these barriers,we proposed a ferric ion(Fe^(3+))-ascorbic acid(AA)complex catalyzed calcium peroxide(CaO_(2))Fenton-like system to remove organic dyes in water.This collaborative Fe^(3+)/AA/CaO_(2)system presented an obvious improvement in the methyl orange(MO)decolorization,and also effectively eliminated other dyes.Response surface method was employed to optimize the running parameters for this coupling process.Under the optimized arguments(2.76 mmol/L Fe^(3+),0.68 mmol/L AA,and 4 mmol/L CaO_(2)),the MO removal achieved 98.90%after 15 min at pH 6.50,which was close to the computed outcome of 99.30%.Furthermore,this Fenton-like system could perform well in a wide range of pH(3-11),and enhance the H_(2)O_(2)decomposition and Fe ions recycle.The scavenger experiment result indicated that hydroxyl radical,superoxide anion free radical,and singlet oxygen were acted on the dye elimination.Moreover,electron spin resonance analysis corroborated that the existences of these active species in the Fe^(3+)/AA/CaO_(2)system.This study could advance the development of Fenton-like technique in organic effluent disposal. | Deling Yuan Chen Zhang Shoufeng Tang Zetao Wang Qina Sun Xiaoyu Zhang Tifeng Jiao Qingrui Zhang | 2021 | Chinese Chemical Letters2021，32，11： | 2 |
| 10 | VIRTUAL DESIGN OF A NEW TYPE OF HYDRAULIC SUPPORT显示文摘Using virtual reality to design a new type of hydraulic support is discussed. That is how to make use of the virtual design to develop coal mining machine in practice. The advantages of virtual design are studied and the simple virtual reality system is built. The 3D parts and elements of hydraulic support are modeled with parametric design in CAD software, then exported to VR environment, in which the virtual hydraulic support is assembled, operated and tested. With the method, the errors and faults of design can be fined easily, many improvements are made and the new hydraulic support is developed successfully. | Dong Zhifeng Chang Hong Wang Shoufeng Zheng Yi Yang YanxiuDepartment of Mechanical and Electronic Engineering, China University of Mining and Technology,Beijing 100083, China | 2002 | Chinese Journal of Mechanical Engineering2002，15，3： | 2 |
| 11 | In sight of K-deficient layered K_(x)MnO_(2) cathode for potassium-ions batteries显示文摘Potassium-ions batteries(PIBs)are attracting increasing attention as up-and-coming youngster in largescale grid-level energy storage benefiting from its low-cost and high energy density.Nevertheless,enough researches regarding indispensable cathode materials for PIBs are badly absent.Herein,we synthesize K-deficient layered manganese-based oxides(P2-K_(0.21)MnO_(2) and P3-K_(0.23)MnO_(2))and investigate them as cathode of PIBs for the first time.As the newcomer of potassium-containing layered manganese-based oxides(K_(x)MnO_(2))group,P2-K_(0.21)MnO_(2) delivers high discharge capacity of 99.3 mAh g^(-1) and P3-K_(0.23)MnO_(2) exhibits remarkable capacity retention rate of 75.5%.Besides,in-situ XRD and ex-situ XRD measurements reveal the reversible phase transition of P2-K_(0.21)MnO_(2) and P3-K_(0.23)MnO_(2) with the potassium-ions extraction and reinsertion,respectively.This work contributes to a better understanding for the potassium storage in K-deficient layered K_(x)MnO_(2)(x≤0.23),possessing an important basic scientific significance for the exploitation and application of layered K_(x)MnO_(2) in PIBs. | Tiezhong Liu Shuang Hou Youpeng Li Shoufeng Xue Junhua Hu Haikuo Fu Chenghao Yang Lingzhi Zhao | 2022 | Journal of Energy Chemistry2022，31，1： | 2 |
| 12 | Effects of different factors on drivers' guidance compliance behaviors under road condition information shown on VMS显示文摘 | ZHONG Shiquan ZHOU Lizhen MA Shoufeng | 2012 | Transportation Research A: Policy and Practice2012，46，9： | 1 |
| 13 | Rough recognition of knowledge and its applications显示文摘 | Shoufeng Yin Haiqing Hu Kaiquan Shi | 2004 | An International Journal of Advances in Systems Sciences and Applications2004，，1： | 1 |
| 14 | Incidence and Risk Factors of Neurological Deficits of Surgical Correction for Scoli- osis Analysis of 1373 Cases at One Chinese Institution 显示文摘 | Qiu Y Shoufeng Wang Bin Wang | 2008 | 33(5): 519-5262008，33，5： | 1 |
| 15 | Analysis of honk effect on the traffic flow in a cellular automaton model 显示文摘 | Liang Zheng Shoufeng Ma Shiquan Zhong | 2011 | Physica A: Statistical Mechanis and Its Applications2011，39，6： | 1 |
| 16 | Rough recognition of knowledge and its application显示文摘 | Shoufeng Yin Haiqing Hu Kaiquan Shi | 2004 | An International Journal of Advances in Systems Sciences and Applications2004，1，： | 1 |
| 17 | Design and application of an up-scaled dielectric barrier discharge plasma reactor for regeneration of phenol-saturated granular activated carbon显示文摘 | Tang Shoufeng Lu Na Li Jie | 2012 | Separation and Puri-fication Technology2012，95，： | 1 |
| 18 | Rough recognition of knowledge and its applications显示文摘 | YIN Shoufeng HU Haiqing SHI Kaiquan | 2004 | An International Journal of Advances in System Sciences and Applications2004，，1： | 1 |
| 19 | Fabrication of CeO2 nanoparticles modified glassy carbon electrode and its application forelectrochemical determination of UA and AA simultaneously 显示文摘 | Wei Yan Li Maoguo Jiao Shoufeng | 2006 | Electrochimica Acta2006，52，3： | 1 |
| 20 | Reactivity, stability and electrochemical behavior of lithium iron phosphates显示文摘 | Shoufeng Yang Yanning Song Peter Y Zavalij | 2002 | Electrochemistry Communications2002，4，： | 1 |
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