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| 1 | A method for static aeroelastic analysis based on the high-order panel method and modal method显示文摘A method for static aeroelastic analysis based on the high-order panel method and modal method is presented. The static aeroelastic characteristics of flexible wings are investigated using this method. Three-dimensional aerodynamic models of flexible wings are constructed based on the geometry of wing configuration, and the modal method is adopted to achieve the fluid-structure coupling. The static aeroelastic characteristics of the AGARD445.6 wing and a low-aspect-ratio wing are investigated in this study. The influences of elastic structural deformation on aerodynamic forces are studied with an emphasis analyzing the aerodynamic coefficients, wing root loads, structural deformation and pressure distribution of different sections, and results are compared with the results from wind-tunnel tests and the elastic results based on experimental aerodynamic forces. It is concluded that aerodynamic forces can be accurately calculated with the high-order panel method. The method presented in this study is feasible, credible and efficient. Comprehensive static aeroelastic characteristics can be provided by the method for early phases of aircraft design. | YANG Chao ZHANG BoCheng WAN ZhiQiang WANG YaoKun | 2011 | Science China(Technological Sciences)2011，54，3： | 9 |
| 2 | SOME DIAGNOSTICS IN NONLINEAR REPRODUCTIVE DISPERSION MODELS显示文摘This article discusses the problem of the detection of influential cases in nonlinear reproductive dispersion models (NRDM). A diagnostic based on case\|deletion approach in estimating equations is proposed. The relationships between the generalized leverage defined by Wei et al. in 1998, statistical curvature, and the local influence of the response vector perturbations are investigated in NRDM. Two numerical examples are given to illustrate the results. | Tang Niansheng 1,2 \ Wei Bocheng 1\ Wang Xueren 21 Dept. ofAppl.Math., SoutheastUniv.,Nanjing 210096.2 Adult Education College,Yunnan Univ.,Kunm ing 650091. | 2000 | Applied Mathematics(A Journal of Chinese Universities)2000，15，1： | 9 |
| 3 | Overall assessment of antibiotic substitutes for pigs:a set of meta-analyses显示文摘Background:Antibiotic growth promoters are widely used to improve weight gain.However,the abuse of antibiotics can have many negative effects on people.Developing alternatives to antibiotics is an urgent need in livestock production.We aimed to perform a meta-analysis and network meta-analysis(NMA)to investigate the effects of feed additives as potential antibiotic substitutes(ASs)on bacteriostasis,growth performance,intestinal morphology and immunity.Furthermore,the primary,secondary,and tertiary ASs were defined by comparing their results with the results of antibiotics.Results:Among 16,309 identified studies,37 were summarized to study the bacteriostasis effects of feed additives,and 89 were included in the meta-analysis and NMA(10,228 pigs).We summarized 268 associations of 57 interventions with 32 bacteria.The order of bacteriostasis effects was as follows:antimicrobial peptides(AMPs)≈antibiotics>organic acids>plant extracts>oligosaccharides.We detected associations of 11 feed additives and 11 outcomes.Compared with a basal diet,plant extract,AMPs,probiotics,microelements,organic acids,bacteriophages,lysozyme,zymin,and oligosaccharides significantly improved growth performance(P<0.05);organic acids,probiotics,microelements,lysozyme,and AMPs remarkably increased the villus height:crypt depth ratio(V/C)(P<0.05);and plant extracts,zymin,microelements,probiotics,and organic acids notably improved immunity(P<0.05).The optimal AMP,bacteriophage,lysozyme,microelements,oligosaccharides,organic acids,plants,plant extracts,probiotics,and zymin doses were 0.100%,0.150%,0.012%,0.010%,0.050%,0.750%,0.20%,0.040%,0.180%,and 0.100%,respectively.Compared with antibiotics,all investigated feed additives exhibited no significant difference in effects on growth performance,IgG,and diarrhoea index/rate(P>0.05);AMPs and microelements significantly increased V/C(P<0.05);and zymin significantly improved lymphocyte levels(P<0.05).Furthermore,linear weighting sum models were used to comprehensively estimate the overall impact of each feed additive on pig growth and health.Conclusions:Our findings suggest that AMPs and plant extracts can be used as primary ASs for weaned piglets and growing pigs,respectively.Bacteriophages,zymin,plants,probiotics,oligosaccharides,lysozyme,and microelements can be regarded as secondary ASs.Nucleotides and organic acids can be considered as tertiary ASs.Future studies should further assess the alternative effects of combinational feed additives. | Bocheng Xu Jie Fu Luoyi Zhu Zhi Li Mingliang Jin Yizhen Wang | 2021 | Journal of Animal Science and Biotechnology2021，12，2： | 9 |
| 4 | Research of Fast Satellite Selection Algorithm for Multi-constellation显示文摘We propose a fast satellite selection algorithm for multi-constellation, which is based on both Newton's identities for Geometric dilution of precision(GDOP)fast computation and optimal satellite geometric distribution for less cycle participation. An effective closed-form formula is proposed for GDOP approximation, avoiding conventional matrix inversion and complexity. We reduce computational cycles with auxiliary optimal satellite geometric distribution, which improves the efficiency of realtime positioning under the combined action of both. Simulation results indicate that we can save more than 44% and99% computational complexity when selecting 7 satellites from 10 and 30 visible satellites respectively. The GDOP of proposed method is very close to optimal result, better than that of Quasi-Optimal algorithm. | MENG Fanchen WANG Shan ZHU Bocheng | 2016 | Chinese Journal of Electronics2016，25，6： | 6 |
| 5 | Ultrathin wavy Rh nanowires as highly effective electrocatalysts for methanol oxidation reaction with ultrahigh ECSA显示文摘Direct methanol fuel cells (DMFCs) have received tremendous research interests because of the facile storage of liquid methanol vs.hydrogen.However,the DMFC today is severely plagued by the poor kinetics and rather high overpotential in methanol oxidation reaction (MOR).Here we report the investigation of the ultrathin Rh wavy nanowires as a highly effective MOR electrocatalyst.We show that ultrathin wavy Rh nanowires can be robustly synthesized with 2-3 nm diameters.Electrochemical studies show a current peak at the potential of 0.61 V vs.reversible hydrogen electrode (RHE),considerably lower than that of Pt based catalysts (~ 0.8-0.9 V vs.RHE).Importantly,with ultrathin diameters and favorable charge transport,the Rh nanowires catalysts exhibit an ultrahigh electrochemically active surface area determined from CO-stripping (ECSAco) of 144.2 m2/g,far exceeding that of the commercial Rh black samples (20 m2/g).Together,the Rh nanowire catalysts deliver a mass activity of 722 mA/mg at 0.61 V,considerably higher than many previously reported electrocatalysts at the same potential.The chronoamperometry studies also demonstrate good stability and CO-tolerance compared with the Rh black control sample,making ultrathin Rh wavy nanowires an attractive electrocatalyst for MOR. | Xiaoyang Fu Zipeng Zhao Chengzhang Wan Yiliu Wang Zheng Fan Frank Song Bocheng Cao Mufan Li Wang Xue Yu Huang Xiangfeng Duan | 2019 | Nano Research2019，12，1： | 3 |
| 6 | A cost-effective detection of low-abundance mutation with DNA three-way junction structure and lambda exonuclease显示文摘We presented a low-abundance mutation detection method with lambda exonuclease and DNA threeway junction structure.The assistant strand in the DNA three-way junction structure could regulate the reaction system from the kinetics and thermodyna mics aspects.The optimization of the assista nt strand helps to improve the selectivity of the mutant-type DNA to the wild-type DNA about 35 times.Moreover,the cost of the optimization process could be saved by about 90%.The method was applied to the detection of a human ovarian cancer-related gene mutation BRCA1(rs1799949,c.2082 C>T).The limit of detection to the mutation abundance in the DNA three-way junction structure system(0.2%) was one order lower compared with that in the double-stranded DNA structure system(2%).The mutation abundance in different standard samples was quantitively measured,and the results were consistent with the initial abundance in the standard samples. | Zishan Feng Wei Zhang Longjie Li Bocheng Tu Weicong Ye Xiaofeng Tang Hongbo Wang Xianjin Xiao Tongbo Wu | 2021 | Chinese Chemical Letters2021，32，2： | 1 |
| 7 | Theoretical investigation of stokes shift of 3, 4-diaryl-substituted male imide fluorophores显示文摘 | Wang Bocheng Liao Hsienren Yeh H | 2005 | J Lumin2005，113，3： | 1 |
| 8 | Detection of influential observations in nonlinear models 显示文摘 | TANG Niansheng WEI Bocheng WANG Xueren | 2002 | Aust N Z J Star2002，44，2： | 1 |
| 9 | Flatness maintenance and roughness reduction of silicon mirror in chemical mechanical polishing process显示文摘As an important optical component in laser system,silicon mirror surface is required to have micron-level flatness and subnanometer-level roughness.The research concentrates on how to improve roughness as far as possible while maintaining flatness of silicon mirror surface during chemical mechanical polishing(CMP)process.A polishing edge effect model is established to explain the reason of flatness deterioration,and a roughness theoretical model is set up to get the limit of perfect surface roughness.Based on the models above,a polishing device is designed to maintain the surface flatness,and the optimized polishing process parameters are obtained by orthogonal tests to get a near-perfect surface roughness.Finally the maintenance of flatness and the improvement of roughness can be achieved at the same time in one step of CMP process.This work can be a guide for silicon mirror manufacture to improve optical reflection performance significantly. | JIANG BoCheng ZHAO DeWen WANG BingQuan ZHAO HuiJia LIU YuHong LU XinChun | 2020 | Science China(Technological Sciences)2020，63，1： | 1 |
| 10 | Effects of long-chain fatty acid supplementation on the growth performance of grower and finisher pigs: a meta-analysis显示文摘Background: Supplementation of feed with long-chain fatty acids(LCFAs) during the grower and finisher phases has long been discussed as a growth promotion strategy in pigs, but its effects are inconsistent. The purpose of our study was to comprehensively evaluate its effects on the growth performance based on the average daily gain(ADG), average daily feed intake(ADFI) and gain: feed(G:F) ratio and to unveil the roles of the basal diet, LCFA concentration and LCFA saturation.Results: We searched the Pub Med and Web of Science databases(articles published from Jan 1 st, 2000, to Sep 30 th,2018;restricted to English) and compared LCFA-supplemented diets with control diets. We retrieved 2346 studies, 18 of which(1314 pigs, 26 records) were eligible for our analysis. We used a random-effects model to calculate the weighted mean differences(WMDs) and 95% confidence intervals(CIs). LCFA supplementation in the grower-finisher phase improved the ADG(WMD = 41.74 g/d, 95% CI: 8.81 to 74.66, P = 0.013) and G:F ratio(WMD = 0.019, 95% CI: 0.006 to 0.032, P = 0.003). For supplementation solely in the finisher phase, we found a similar performance in the ADG(WMD = 39.93 g/d, 95% CI: 26.48 to 53.38, P < 0.001) and G:F ratio(WMD = 0.019, 95% CI: 0.006 to 0.032, P < 0.001) but a reduction in the ADFI(WMD =-83.863 g/d, 95% CI:-156.157 to-11.569, P = 0.023). Specifically, approximately 5%LCFA supplementation in the finisher phase had significant effects on the ADG(WMD = 51.385 g/d, 95% CI: 35.816 to66.954, P < 0.001), ADFI(WMD =-102.869 g/d, 95% CI:-189.236 to-16.502, P = 0.02) and G:F ratio(WMD = 0.028, 95%CI: 0.018 to 0.039, P < 0.001), whereas a concentration of approximately 1% exhibited no effects.Conclusions: Overall, regardless of the basal diet and saturation, LCFA supplementation greatly improves the growth performance of grower and finisher pigs, primarily by increasing the energy density. | Zhi Li Bocheng Xu Zeqing Lu Yizhen Wang | 2019 | Journal of Animal Science and Biotechnology2019，10，4： | 1 |
| 11 | Accurate closed-form eigensolutions of three-dimensional panel flutter with arbitrary homogeneous boundary conditions显示文摘Highly accurate closed-form eigensolutions for flutter of three-dimensional(3D)panel with arbitrary combinations of simply supported(S),glide(G),clamped(C)and free(F)boundary conditions(BCs),such as cantilever panels,are achieved according to the linear thin plate theory and the first-order piston theory as well as the complex modal analysis,and all solutions are in a simple and explicit form.The iterative Separation-of-Variable(iSOV)method proposed by the pre-sent authors is employed to obtain the highly accurate eigensolutions.The flutter mechanism is studied with the benefit of eigenvalue properties from mathematical senses.The effects of boundary conditions,chord-thickness ratios,aerodynamic damping,aspect ratios and in-plane loads on flut-ter properties are examined.The results are compared with those of Kantorovich method and Galerkin method,and also coincide well with analytical solutions in literature,verifying the accu-racy of the present closed-form results.It is revealed that,(A)the flutter characteristics are domi-nated by the cross section properties of panels in the direction of stream flow;(B)two types of flutter,called coupled-mode flutter and zero-frequency flutter which includes zero-frequency single-mode flutter and buckling,are observed;(C)boundary conditions and in-plane loads can affect both flutter boundary and flutter type;(D)the flutter behavior of 3D panel is similar to that of the two-dimensional(2D)panel if the aspect ratio is up to a certain value;(E)four to six modes should be used in the Galerkin method for accurate eigensolutions,and the results converge to that of Kantorovich method which uses the same mode functions in the direction perpendicular to the stream flow.The present analysis method can be used as a reference for other stability issues characterized by complex eigenvalues,and the highly closed-form solutions are useful in parameter designs and can also be taken as benchmarks for the validation of numerical methods. | Qiaozhen SUN Yufeng XING Bo LIU Bocheng ZHANG Zekun WANG | 2023 | Chinese Journal of Aeronautics2023，36，1： | 1 |
| 12 | A Discusion on Limited Load-Carrying Capacity of Rectangular Plates显示文摘The elastic-plastic method is often used in designing the inner flat bulkhead plates of submarines, and the upper structure of ships and drilling platforms. Such bulkhead plates can bear the load only once. For the improvement of the load-carrying capacity or the reduction of the weight of plates, the yield line analytical method is employed in this paper to design the bulkhead plate to improve economy and increase the effiective load. Besides, a further sutdy of this method has been made theoretically and experimentally, and the data of the limited load-carrying capacity of the plate have been obtained. Furthermore, the safety coefficients for such a method are presented, which can be used as reference for related departments and staffs. | Li Changchun Shi Depei Wang Bocheng Associate Professor, Department of Naval Architecture and Ocean Engineering, Jiao Tong University,Shanghai 200030Engineer, Shangsha Shipyard, Shangsha 410013 | 1996 | China Ocean Engineering1996，11，4： | 0 |
| 13 | Choledocholithiasis caused by anatomical variation of cystic duct: A case report显示文摘Laparoscopic cholecystectomy(LC)has gradually become the first choice for the treatment of cholecystolithiasis in recent years.Iatrogenic bile duct injury(IBDI)is an important clinical problem in LC.The anatomical variation of the cystic duct increases the probability of IBDI and the difficulty of operation.We present a case of a 44-year-old male with a anatomical variation of the cystic duct complicated with cholecystolithiasis and choledocholithiasis,who successfully underwent choledocholithotomy,choledochoscopic exploration and T-tube drainage surgery.The patient recovered well and was discharged home on postoperative day 10.The T-tube was removed at 1 month postoperatively after cholangiography examination of no choledocholithiasis left. | Meng Tong Yumeng Li Xuedi Sun Yingli Wang Shuai Yang Bocheng Zhang Feiyu Jia Lijun Peng Jinghua Liu | 2022 | Laparoscopic, Endoscopic and Robotic Surgery2022，5，1： | 0 |
| 14 | Analytical modeling and vibration analysis of fiber reinforced composite hexagon honeycomb sandwich cylindrical-spherical combined shells显示文摘This study analyzes and predicts the vibration characteristics of fiberreinforced composite sandwich(FRCS)cylindrical-spherical(CS)combined shells with hexagon honeycomb core(HHC)for the first time based on an analytical model developed,which makes good use of the advantage of the first-order shear deformation theory(FSDT),the multi-segment decomposition technique,the virtual spring technology,the Jacobi-Ritz approach,and the transfer function method.The equivalent material properties of HHC are firstly determined by the modified Gibson’s formula,and the related energy equations are derived for the HHC-FRCS-CS combined shells,from which the fundamental frequencies,the mode shapes,and the forced vibration responses are solved.The current model is verified through the discussion of convergence and comparative analysis with the associated published literature and finite element(FE)results.The effects of geometric parameters of HHC on the dynamic property of the structure are further investigated with the verified model.It reveals that the vibration suppression capability can be greatly enhanced by reducing the ratio of HHC thickness to total thickness and the ratio of wall thickness of honeycomb cell to overall radius,and by increasing the ratio of length of honeycomb cell to overall radius and honeycomb characteristic angle of HHC. | Hui LI Bocheng DONG Zhijiang GAO Jing ZHAO Haiyang ZHANG Xiangping WANG Qingkai HAN | 2022 | Applied Mathematics and Mechanics(English Edition)2022，43，9： | 0 |
| 15 | Detection of Recurrent Cervical Cancer by Whole-body FDG PET Scans显示文摘OBJECTIVE To evaluate the role of whole-body{ 18 F}fluro-2-dexoxyglucose(FDG)positron emission tomography(PET)scans in the detection of recurrent cervical cancer. METHODS Between June,2000 and January,2006,25 patients had undergone a PET scan at the Peking Union Medical College Hospital to evaluate possible recurrent cervical cancer.All the PET findings were reviewed and compared to available clinical data to classify each PET scan result as a true positive,true negative,false positive,or false negative. RESULTS A total of 38 PET scans were conducted on the 25 patients whose median age was 46 years.The Stage distributions were IA(n=1),IB(n=11),IIA(n=5),IIB(n=4),IIIB(n=2),IVB(n =1),and unknown Stage(n=1).There were 22 cases of squamous cell carcinoma and 3 cases of adenocarcinoma resulting in 9 true positive PET scans,27 true negatives,2 false positives and no false negatives.The sensitivity of the FDG PET scans for detecting recurrent cervical cancer was 100%,specificity 93.1%,positive predictive value 81.8%,and negative predictive value 100%. CONCLUSION The whole body FDG PET scans are a sensitive and specific imaging modality for the detection of recurrent cervical cancer.However the cost of PET scans is too high at this time.A large prospective study will determine whether this modality should be used routinely and take the place of other imaging methods in the early detection of recurrent cervical | Jiaxin Yang Jinhui Wang Zhaohui Zhu Keng Shen Bocheng Wang | 2008 | Chinese Journal of Clinical Oncology2008，5，2： | 0 |
| 16 | A slow orbit feedback algorithm based on expanded responsematrix for SSRF storage ring显示文摘Background Most of the global orbit feedback algorithms in storage rings are based on response matrix(RM)singular value decomposition method.Commonly,the RM is the orbit distortion along the ring responding to the steering magnet changes.For those methods RF frequency feedback is in a separated process.Methods and Results In this paper,the response matrix is expanded to the orbit distortion caused by the RF frequency variation.With this expanded RM,the orbit correction via steering magnet changes and RF frequency adjustment can be accomplished in one step.The commissioning results are carried out showing that the algorithm works stably. | Bocheng Jiang Hanghua Xu Kun Wang | 2022 | Radiation Detection Technology and Methods2022，6，4： | 0 |
| 17 | Tracking code simulation for passive harmonic cavity in the SSRF storage ring显示文摘Background A passive third harmonic cavity is planned to install in the Shanghai Synchrotron Radiation Facility(SSRF)storage ring to increase the beam lifetime.Transient beam loading effect generated by the gap between the bunch trains can suppress the bunch lengthening effect of the third harmonic cavity.Besides,the field excited in the passive operation of the harmonic cavity depends on the bunch distribution.Purpose To estimate the effect of transient beam loading,the tracking codes have been developed.Methods The tracking simulation has been performed for three uniform filling cases and a nonuniform filling case.The lengthened bunch distribution has also been included into tracking code simulation.The effect of the lengthened bunch has also been investigated.Results The uniform filling pattern with shorter bunch trains shows lower transient beam loading effect and can give much higher bunch lengthening factors compared to those of non-uniform filling case.The effect caused by the reduction of the harmonic voltage generated by lengthened bunch distribution causes a great reduction on bunch lengthening effect in uniform filling case,while the lengthening factor of non-uniform filling case does not affect much in this issue.Conclusion The tracking codes have been developed to estimate the effect of transient beam loading for three uniform filling cases and a non-uniform filling case.The larger gap in the filling pattern can cause the higher transient beam loading effect and lower bunch lengthening effect.The lengthened bunch distribution has also been included into tracking code simulation.The effect of the lengthened bunch has also been investigated.The more the bunch is lengthened,the greater reduction on bunch lengthening effect. | Thanapong Phimsen Bocheng Jiang Hongtao Hou Shunqiang Tian Manzhou Zhang Qinglei Zhang Kun Wang Zhentang Zhao | 2018 | Radiation Detection Technology and Methods2018，2，1： | 0 |
| 18 | A Convolutional Network Coding Oriented Four-Stage Contention Protocol for All-to-All Broadcasting Networks显示文摘Most practical networks are cyclic and demand Convolutional network coding(CNC). Researches on application of CNC in practical networks are still insufficient. Conventional graph theories cannot model the multicast channel properly. This paper introduces a multicast graph with multicast edges to model the multicast networks, and proposes a Multicast edge generation and max-flow detection(MEGAMAD) algorithm to approach the lower bound of necessary multicast edge number for a multicast network. Based on the algorithm we designed a new Media access control(MAC) protocol, the CNC oriented four-stage contention protocol(NC-FSCP) for the all-to-all broadcasting networks. The protocol runs a four stage reservation procedure to reserve time slots for encoded data transmission. Simulation proves that the reserved slot number approaches the lower bound for data dispersion in an all-to-all broadcasting network. | LIU Yun WANG Shan ZHU Bocheng | 2016 | Chinese Journal of Electronics2016，25，1： | 0 |
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