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| 1 | Rock brittleness indices and their applications to different fields of rock engineering:A review显示文摘Brittleness is an important parameter controlling the mechanical behavior and failure characteristics of rocks under loading and unloading conditions,such as fracability,cutability,drillability and rockburst proneness.As such,it is of high practical value to correctly evaluate rock brittleness.However,the definition and measurement method of rock brittleness have been very diverse and not yet been standardized.In this paper,the definitions of rock brittleness are firstly reviewed,and several representative definitions of rock brittleness are identified and briefly discussed.The development and role of rock brittleness in different fields of rock engineering are also studied.Eighty brittleness indices publicly available in rock mechanics literature are compiled,and the measurement method,applicability and limitations of some indices are discussed.The results show that(1)the large number of brittleness indices and brittleness definitions is attributed to the different foci on the rock behavior when it breaks;(2)indices developed in one field usually are not directly applicable to other fields;and(3)the term“brittleness”is sometimes misused,and many empirically-obtained brittleness indices,which lack theoretical basis,fail to truly reflect rock brittleness.On the basis of this review,three measurement methods are identified,i.e.(1)elastic deformation before fracture,(2)shape of post-peak stressestrain curves,and(3)methods based on fracture mechanics theory,which have the potential to be further refined and unified to become the standard measurement methods of rock brittleness.It is highly beneficial for the rock mechanics community to develop a robust definition of rock brittleness.This study will undoubtedly provide a comprehensive timely reference for selecting an appropriate brittleness index for their applications,and will also pave the way for the development of a standard definition and measurement method of rock brittleness in the long term. | Fanzhen Meng Louis Ngai Yuen Wong Hui Zhou | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，1： | 8 |
| 2 | POWER FLOW ANALYSIS AND APPLICATION SIMULATION OF ELECTROMAGNETIC CONTINUOUSLY VARIABLE TRANSMISSION显示文摘With the structure of two air gaps and two rotors,the electromagnetic continuously variable transmission(EMCVT) is a novel power-split continuously variable transmission(CVT).There are two kinds of power flowing through the EMCVT,one is mechanical power and the other is electric power. In the mean time,there are three power ports in the EMCVT,one is the outer rotor named mechanical power port and the other two are the inner rotor and the stator named electric power ports.The mechanical power port is connected to the driving wheels through the fmal gear and the electric ports are connected to the batteries through the transducers.The two kinds of power are coupled on the outer rotor of the EMCVT.The EMCVT can be equipped on the conventional vehicle being regarded as the CVT and it also can be equipped on the hybrid electric vehicle(HEV) as the multi-energy sources assembly.The power flows of these two kinds of applications are analysed.The back electromotive force(EMF) equations are illatively studied and so the dynamic mathematic model is theorized.In order to certify the feasibility of the above theories,three simulations are carried out in allusion to the above two kinds of mentioned applications of the EMCVT and a five speed automatic transmission(AT) vehicle.The simulation results illustrate that the efficiency of the EMCVT vehicles is higher than that of the AT vehicle owed to the optimized operation area of the engine.Hence the fuel consumption of the EMCVT vehicles is knock-down. | LUO Yutao TAN Di MENG Fanzhen | 2008 | Chinese Journal of Mechanical Engineering2008，21，6： | 3 |
| 3 | Drug-loaded balloon with built-in NIR controlled tip-separable microneedles for long-effective arteriosclerosis treatment显示文摘Drug-eluting balloon(DEB)angioplasty has emerged as an effective treatment for cardiovascular and cerebrovascular diseases.However,distal embolism and late lumen restenosis could be caused by drug loss during DEB handling and rapid drug metabolization.Here,a drug-loaded balloon equipped with tip-separable microneedles on the balloon surface(MNDLB)was developed.Inbuilt near-infrared(NIR)ring laser inside the catheter inner shaft was introduced to activate the biodegradable microneedle tips for the first time.The drug-loaded tips thus could be embedded in the vasculature and then released antiproliferative drug-paclitaxel slowly via polymer degradation for more than half a year.A significant increase in drug delivery efficiency and superior therapeutic effectiveness compared with the standard DEB were demonstrated using an atherosclerosis rabbit model. | Li Huang Huaqiang Fang Teng Zhang Binbin Hu Shichen Liu Fanzhen Lv Zhaoxia Zeng Huijie Liu Weimin Zhou Xiaolei Wang | 2023 | Bioactive Materials2023，，5： | 2 |
| 4 | Cognitive decline following major surgery is associated with gliosis, β-amyloid accumulation, and τ phosphorylation in old mice显示文摘 | Yanjie Wan Jing Xu Fanzhen Meng Yuhua Bao Yeying Ge Niyati Lobo Marcela P. Vizcaychipi Denghai Zhang Steve M. Gentleman Mervyn Maze Daqing Ma | 2010 | Critical Care Medicine2010，，11： | 1 |
| 5 | Secret sharing scheme with inherited characteristic显示文摘To assure the shareholders can look for their “legal” attorneys to renew the secret, once the secret sharing scheme is initialized, a secret sharing scheme with inherited characteristic is constructed. In this scheme, each shareholder can produce a new share by his algorithm, which is equivalent to the primary one. Together with other shares, the primary secret can be renewed. Since this scheme is constructed not by replacing the primary share with a new share produced by the dealer in his primitive secret sharing scheme, so no matter how much shares the shareholder produces, these shares can not be gathered together to renew the secret in this scheme. Compared with the existing secret sharing schemes, this scheme provides more agility for the shareholders by investing each of them a function but not affect its security. | Ye Zhenjun Meng Fanzhen | 2006 | Journal of Systems Engineering and Electronics2006，17，4： | 1 |
| 6 | Chaotic Video Encryption Algorithm Based on Baker Map显示文摘 | Meng Z Fanzhen W LIUZhong-xin S U N | 2011 | Journal of Image and Graphics2011，9，11： | 1 |
| 7 | Convergence and stability of the semi - implicit Euler method for a linear stochastic differential delay equation显示文摘 | Liu M Z Cao Wanrong Cheng Fanzhen | 2004 | J Corn App Math2004，170，： | 1 |
| 8 | Cognitive decline following major surgery is associated with gliosis, β-amyloid accumulation, and τ phosphorylation in old mice显示文摘 | Yanjie Wan Jing Xu Fanzhen Meng Yuhua Bao Yeying Ge Niyati Lobo Marcela P. Vizcaychipi Denghai Zhang Steve M. Gentleman Mervyn Maze Daqing Ma | 2010 | Critical Care Medicine2010，，11： | 1 |
| 9 | The de- velopment of highly loaded turbine rotating blades by using 3D optimization design method of turbomachin- ery blades based on artificial neural network & genet- ic algorithm显示文摘 | Zhou Fanzhen Feng Guotai Jiang Hongde | 2003 | Chinese Journal of Astronautica Sin- ica2003，16，4： | 1 |
| 10 | 显示文摘 | XuXiaojing(许晓静) SongTao(宋涛) FanZhen(范真)eta1 | 2012 | 稀有金属材料与工程2012，41，2： | 1 |
| 11 | 显示文摘 | SongTao(宋涛) XuXiaojing(许晓静) FanZhen(范真)eta1 | 2012 | 稀有金属材料与工程2012，41，2： | 1 |
| 12 | The potential for biochar application in rubber plantations in Xishuangbanna,Southwest China:a pot trial显示文摘Biochar can enhance crop production and sequester carbon,but there have been few studies with tree crops.Rubber plantations cover more than 8 million hectares in Southeast Asia,so we assessed the feasibility of biochar application in these plantations with a pot trial.Rubber seedlings were planted in soil with four concentrations(0,1.25%,2.5% and 5%,w/w)of biochar combined with two concentrations of compound fertilizer(0 kg/ha and 300 kg/ha).Soil properties and seedling growth were measured,and a leaching experiment was conducted in the rainy season.Our results show that biochar increased pH,water content(27.4-65.1%),total carbon(25.4-53.6%),nitrate nitrogen,and available phosphorus in the soil,and decreased bulk density(3.2-23.9%).Biochar treatment reduced leaching of ammonium nitrogen and ortho-P.Biochar increased seedling nutrient uptake(C,N,P and K),with 2.5% and 5% biochar showing the largest effects,but seedling biomass was the highest with 1.25%,and declined in 2.5% and 5%.Our results suggest that biochar addition is an effective way to improve rubber plantation soils,sequester more carbon and decrease nutrient leaching,but the optimum application rate under field conditions needs further research. | Libing Pan Fanzhen Xu Huizhu Mo Richard T.Corlett Liqing Sha | 2021 | Biochar2021，3，1： | 0 |
| 13 | Detector development at the Back-n white neutron source显示文摘Purpose Back-n is a white neutron beamline at China spallation neutron source,which was established in the year of 2018.It is a powerful facility for nuclear data measurement,neutron detector calibration,and radiation effect research.Method A series of detectors were built for different experiments,including beam monitoring,beam profile measurement,neutron induced secondaries(fission fragments,light charged particles and gamma)cross section measurement,and neutron resonance radiography,etc.A common digitization electronics and a cluster-based DAQ were developed for these detector systems.Most detectors have been employed at Back-n and serviced for experiments from the beginning of the beamline running.Results and conclusion As an overview of detectors of Back-n,the details of the detector design and the experiment performing are described in this paper.Some developing systems,e.g.,MTPC and B-MCP,are also included. | Fan Ruirui Li Qiang Bao Jie Li Yang Liu Rong Jiang Wei Ren Jie Zhang Qiwei Cao Ping Gu Minhao Ren Zhizhou Yi Han Tang Jingyu An Qi Bai Haofan Bai Jiangbo Chen Qiping Chen Yonghao Chen Zhen Cui Zengqi Fan Anchuan Feng Changqing Feng Fanzhen Gao Keqing Han Changcai Han Zijie He Guozhu He Yongcheng Hong Yang Hu Yiwei Huang Hanxiong Jia Weihua Jiang Haoyu Jiang Zhijie Jin Zhengyao Kang Ling Li Bo Li Chao Li Gong Li Jiawen Li Xiao Liu Jie Liu Shubin Luan Guangyuan Ning Changjun Qi Binbin Ruan Xichao Song Zhaohui Sun Kang Tan Zhixin Tang Shengda Wang Pengcheng Wang Zhaohui Wen Zhongwei Wu Xiaoguang Wu Xuan Xie Likun Yang Yiwei Yu Yongji Zhang Guohui Zhang Linhao Zhang Mohan Zhang Xianpeng Zhang Yuliang Zhang Yue Zhang Zhiyong Zhao Maoyuan Zhou Luping Zhou Zhihao Zhu Kejun The CSNS Back-n Collaboration | 2023 | Radiation Detection Technology and Methods2023，7，2： | 0 |
| 14 | Ultrasmall Ru nanoparticles supported on chitin nanofibers for hydrogen production from NaBH4 hydrolysis显示文摘In this work,a series of chitin-supported Ru catalysts,composed of ultrasmall Ru nanoparticles supported on the chitin nanofibers,with different Ru content from 0.07 wt%to 0.93 wt%,are fabricated.Results from catalyzed NaBH4 hydrolysis experiments indicate that the catalytic activity of the fabricated chitin-supported Ru catalysts increases gradually with the decreasing of Ru content.The rate of hydrogen generation from NaBH4 hydrolysis catalyzed by the catalyst with 0.07 wt%Ru content is as high as 55.29 L min 1 gRu-1 at 30℃,and this reaction exhibits activation energy of 39.16 kJ/mol.The augment of NaBH4 dosage in the experiments does not weaken the catalytic activity.In addition,the fabricated chitin-supported Ru catalysts show excellent durability in NaBH4 hydrolysis,with only 9.2%activity loss after used for 20 cycles.With excellent catalytic activity and durability,the as-obtained Ru catalysts provide a promising choice for promoting hydrogen production from NaBH4 hydrolysis. | Jiapeng Zhang Fanzhen Lin Lijing Yang Zhaoyi He Xiaoshan Huang Dingwei Zhang Hua Dong | 2020 | Chinese Chemical Letters2020，31，7： | 0 |
| 15 | Recurrent neural networks-based multivariable system PID predictive control显示文摘A nonlinear proportion integration differentiation(PID)controller is proposed on the basis of recurrent neural networks,due to the difficulty of tuning the parameters of conventional PID controller.In the control process of nonlinear multivariable system,a decoupling controller was constructed,which took advantage of multi-nonlinear PID controllers in parallel.With the idea of predictive control,two multivariable predictive control strategies were established.One strategy involved the use of the general minimum variance control function on the basis of recursive multi-step predictive method.The other involved the adoption of multi-step predictive cost energy to train the weights of the decou-pling controller.Simulation studies have shown the efficiency of these strategies. | ZHANG Yan WANG Fanzhen SONG Ying CHEN Zengqiang YUAN Zhuzhi | 2007 | Frontiers of Electrical and Electronic Engineering in China2007，2，2： | 0 |
| 16 | Highly dispersed Ru/Co catalyst with enhanced activity for catalyzing NaBH4 hydrolysis in alkaline solutions显示文摘Ru and Co are highly dispersed on the surface of TiO2 nanopa rticles with an easy coprecipitation method to fabricate a novel Ru-based catalyst(Ru/Co-TiO2).The fabricated Ru/Co-TiO2 catalyst exhibits superior catalytic performance for promoting NaBH4 hydrolysis in alkaline medium,showing an impressive hydrogen generation rate per gram Ru as high as 172 L min-1 gRu-1 which is better than most of recently reported Ru-based catalysts.In addition,the fabricated Ru/Co-TiO2 catalyst also shows excellent du rability in cycle use,with only 2.9% activity loss after being used for 5 cycles.These advantages make the developed Ru/Co-TiO2 catalyst a potential choice for promoting hydrogen generation from NaBH4 hydrolysis. | Jiapeng Zhang Fanzhen Lin Lijing Yang Hua Dong | 2020 | Chinese Chemical Letters2020，31，9： | 0 |
| 17 | The Application of Spanning Tree Algorithm in Arabic Language Rules for Contextual Analysis | BIAN Fuping MENG Fanzhen HOU Wenhua(Department of Mathematics, Tianjin University, Tianjin 300072) | 1996 | Systems Science and Systems Engineering1996，6，4： | 0 |
| 18 | Design and realization of threshold secret sharing scheme with random weights显示文摘A new threshold secret sharing scheme is constructed by introducing the concept of share vector, in which the number of shareholders can be adjusted by randomly changing the weights of them.This kind of scheme overcomes the limitation of the static weighted secret sharing schemes that cannot change the weights in the process of carrying out and the deficiency of low efficiency of the ordinary dynamic weighted sharing schemes for its resending process.Thus,this scheme is more suitable to the case that the number of shareholders needs to be changed randomly during the scheme is carrying out. | Ye Zhenjun Fang Zhenming Wang Chunfeng Meng Fanzhen | 2009 | Journal of Systems Engineering and Electronics2009，20，5： | 0 |
| 19 | Shear behavior and off-fault damage of saw-cut smooth and tension-induced rough joints in granite显示文摘The damage of rock joints or fractures upon shear includes the surface damage occurring at the contact asperities and the damage beneath the shear surface within the host rock.The latter is commonly known as off-fault damage and has been much less investigated than the surface damage.The main contribution of this study is to compare the results of direct shear tests conducted on saw-cut planar joints and tension-induced rough granite joints under normal stresses ranging from 1 MPa to 50 MPa.The shear-induced off-fault damages are quantified and compared with the optical microscope observation.Our results clearly show that the planar joints slip stably under all the normal stresses except under 50 MPa,where some local fractures and regular stick-slip occur towards the end of the test.Both post-peak stress drop and stick-slip occur for all the rough joints.The residual shear strength envelopes for the rough joints and the peak shear strength envelope for the planar joints almost overlap.The root mean square(RMS)of asperity height for the rough joints decreases while it increases for the planar joint after shear,and a larger normal stress usually leads to a more significant decrease or increase in RMS.Besides,the extent of off-fault damage(or damage zone)increases with normal stress for both planar and rough joints,and it is restricted to a very thin layer with limited micro-cracks beneath the planar joint surface.In comparison,the thickness of the damage zone for the rough joints is about an order of magnitude larger than that of the planar joints,and the coalesced micro-cracks are generally inclined to the shear direction with acute angles.The findings obtained in this study contribute to a better understanding on the frictional behavior and damage characteristics of rock joints or fractures with different roughness. | Fanzhen Meng Feili Wang Louis Ngai Yuen Wong Jie Song Muzi Li Chuanqing Zhang Liming Zhang | 2024 | Journal of Rock Mechanics and Geotechnical Engineering2024，16，4： | 0 |
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