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| 1 | Fundamental mechanisms and phenomena of clathrate hydrate nucleation显示文摘Insights into the mechanism of hydrate nucleation are of great significance for the development of hydrate-based technologies,hydrate relevant flow assurance,and the exploration of in situ natural gas hydrates.Compared with the thermodynamics of hydrate formation,understanding the nucleation mechanism is challenging and has drawn substantial attention in recent decades.In this paper,we attempt to give a comprehensive review of the recent progress of studies of clathrate hydrate nucleation.First,the existing hypotheses on the hydrate nucleation mechanism are introduced and discussed.Then,we summarize recent experimental studies on induction time,a key parameter evaluating the velocity of the nucleation process.Subsequently,the memory effect is particularly discussed,followed by the suggestion of several promising research perspectives. | Jinlong Cui Zhenfeng Sun Xiaohui Wang Bin Yu Shudong Leng Guangjin Chen Changyu Sun | 2019 | Chinese Journal of Chemical Engineering2019，27，9： | 11 |
| 2 | The status of exploitation techniques of natural gas hydrate显示文摘Natural gas hydrate(NGH)has been widely considered as an alternative form of energy with huge potential,due to its tremendous reserves,cleanness and high energy density.Several countries involving Japan,Canada,India and China have launched national projects on the exploration and exploitation of gas hydrate resources.At the beginning of this century,an early trial production of hydrate resources was carried out in Mallik permafrost region,Canada.Japan has conducted the first field test from marine hydrates in 2013,followed by another trial in 2017.China also made its first trial production from marine hydrate sediments in 2017.Yet the low production efficiency,ice/hydrate regeneration,and sand problems are still commonly encountered;the worldwide progress is far before commercialization.Up to now,many gas production techniques have been proposed,and a few of them have been adopted in the field production tests.Nevertheless,hardly any method appears really promising;each of them shows limitations at certain conditions.Therefore,further efforts should be made on the economic efficiency as well as sustainability and environmental impacts.In this paper,the investigations on NGH exploitation techniques are comprehensively reviewed,involving depressurization,thermal stimulation,chemical inhibitor injection,CO2–CH4 exchange,their combinations,and some novel techniques.The behavior of each method and its further potential in the field test are discussed.The advantages and limitations of laboratory studies are also analyzed.The work could give some guidance in the future formulation of exploitation scheme and evaluation of gas production behavior from hydrate reservoirs. | Lei Yang Yulong Liu Hanquan Zhang Bo Xiao Xianwei Guo Rupeng Wei Lei Xu Lingjie Sun Bin Yu Shudong Leng Yanghui Li | 2019 | Chinese Journal of Chemical Engineering2019，27，9： | 9 |
| 3 | Multi-functional polyethersulfone nanofibrous membranes with ultra-high adsorption capacity and ultra-fast removal rates for dyes and bacteria显示文摘The adsorption technology has been widely applied in water remediation for contamination removal of dyes and bacteria,by virtue of the advantages of adsorption technology including high efficiency,energy conservation and ease of operation.Simultaneous removal of dyes and bacteria has been realized by some reported materials,but to achieve satisfactory adsorption amounts and rates remain an unmet goal for decades.Herein,a poly(methacrylatoethyl trimethyl ammonium chloride-co-methyl methacrylate)copolymer was synthesized,and then blended with polyethersulfone for the fabrication of nanofibrous membranes via electrospinning for the use of fast and massive removal of dyes and bacteria.Owing to the introduction of abundant quaternary ammonium groups,the maximum adsorption amount for methyl orange was up to 909.8 mg g^(-1).In addition,the modified nanofibrous membranes showed good recyclability,broad applications in severe environments,selective adsorption ability,and excellent dynamic removal performance.Especially,thanks to the abundant functional groups,the membranes showed fast adsorption ability for bacteria through electrostatic interaction.It should be noted that the clearance ratio for Staphylococcus aureus or Escherichia coli by 6 min of static adsorption could reach 93%or 90%for each.Additionally,dynamic removal ratio via filtration with the nanofibrous membranes could reach 99.7%for Staphylococcus aureus or 98.7%for Escherichia coli in 90 s.Therefore,the proposed approach towards the quaternary ammonium modified polyethersulfone nanofibrous membranes creates a new route for ultra-high adsorption capacity and ultra-fast removal rates for dyes and bacteria in water remediation. | Jianxu Bao Hang Li Yuanting Xu Shengqiu Chen Zhoujun Wang Chunji Jiang Huilin Li Zhiwei Wei Shudong Sun Weifeng Zhao Changsheng Zhao | 2021 | Journal of Materials Science & Technology2021，，19： | 4 |
| 4 | Multi-EAP: Extended EAP for multi-estimate extraction for SMC-PHD filter显示文摘The ability to extract state-estimates for each target of a multi-target posterior, referred to as multi-estimate extraction(MEE), is an essential requirement for a multi-target filter, whose key performance assessments are based on accuracy, computational efficiency and reliability. The probability hypothesis density(PHD) filter, implemented by the sequential Monte Carlo approach,affords a computationally efficient solution to general multi-target filtering for a time-varying number of targets, but leaves no clue for optimal MEE. In this paper, new data association techniques are proposed to distinguish real measurements of targets from clutter, as well as to associate particles with measurements. The MEE problem is then formulated as a family of parallel singleestimate extraction problems, facilitating the use of the classic expected a posteriori(EAP) estimator, namely the multi-EAP(MEAP) estimator. The resulting MEAP estimator is free of iterative clustering computation, computes quickly and yields accurate and reliable estimates. Typical simulation scenarios are employed to demonstrate the superiority of the MEAP estimator over existing methods in terms of faster processing speed and better estimation accuracy. | Li Tiancheng Juan M.Corchado Sun Shudong Fan Hongqi | 2017 | Chinese Journal of Aeronautics2017，30，1： | 4 |
| 5 | Aqueous Synthesis of Mesostructured BiVO_(4) Quantum Tubes with Excellent Dual Response to Visible Light and Temperature显示文摘Analysis of the atomic structure of monoclinic BiVO4 reveals its fascinating structure-related dual response to visible light and temperature.Although there have been a few reported studies of its responses to visible light and temperature,an understanding of the effects of quantum size,particle shape or specific exposed facets on its dual responsive properties remains elusive;this is primarily due to the limited availability of high-quality monodisperse nanocrystals with extremely small sizes and specific_(4)exposed facets.Herein,we describe a novel assembly-fusion strategy for the synthesis of mesostructured monoclinic BiVO_(4)quantum tubes with ultranarrow diameter of 5 nm,ultrathin wall thickness down to 1 nm and exposed{020}facets,via a convenient hydrothermal method at temperatures as low as 100℃.Notably,the resulting high-quality quantum tubes possess significantly superior dual-responsive properties compared with bulk BiVO_(4)or even BiVO4 nanoellipsoids,and thus,show high promise for applications as visible-light photocatalysts and temperature indicators offering improved environmental quality and safety.This mild and facile methodology should be capable of extension to the preparation of other mesostructured inorganic quantum tubes with similar characteristics,giving a range of materials with enhanced dual-responsive properties. | Yongfu Sun Yi Xie Changzheng Wu Shudong Zhang Shishi Jiang | 2010 | Nano Research2010，3，9： | 4 |
| 6 | Importance measure of system reliability upgrade for multi-state consecutive k-out-of-n systems显示文摘Importance measures in reliability systems are used to identify weak components in contributing to a proper function of the system. Traditional importance measures mainly concerned the changing value of the system reliability caused by the change of the reliability of the component, and seldom considered the joint effect of the probability distribution, improvement rate of the object component. This paper studies the rate of the system reliability upgrading with an improvement of the component reliability for the multi-state consecutive k-out-of-n system. To verify the multi-state consecutive k-out-of-n system reliability upgrading by improving one component based on its improvement rate, an increasing potential importance (IPI) and its physical meaning are described at first. Secondly, the relationship between the IPI and Birnbaum importance measures are discussed. And the IPI for some different improvement actions of the component is further discussed. Thirdly, the characteristics of the IPI are analyzed. Finally, an application to an oil pipeline system is given. | HonQvan Dui Shubin si Zhiqiang Cai Shudong Sun Yingfeng Zhang | 2012 | Journal of Systems Engineering and Electronics2012，23，6： | 3 |
| 7 | Learning Bayesian network structure with immune algorithm显示文摘Finding out reasonable structures from bulky data is one of the difficulties in modeling of Bayesian network(BN), which is also necessary in promoting the application of BN. This paper proposes an immune algorithm based method(BN-IA) for the learning of the BN structure with the idea of vaccination. Furthermore, the methods on how to extract the effective vaccines from local optimal structure and root nodes are also described in details.Finally, the simulation studies are implemented with the helicopter convertor BN model and the car start BN model. The comparison results show that the proposed vaccines and the BN-IA can learn the BN structure effectively and efficiently. | Zhiqiang Cai Shubin Si Shudong Sun Hongyan Dui | 2015 | Journal of Systems Engineering and Electronics2015，26，2： | 3 |
| 8 | Efficacy of Bismuth-Containing Quadruple Therapies for Clarithromycin-, Metronidazole-, and Fluoroquinolone-Resistant Helicobacter pylori Infections in a Prospective Study显示文摘 | Xiao Liang Xiaoqing Xu Qing Zheng Wei Zhang Qinjuan Sun Wenzhong Liu Shudong Xiao Hong Lu | 2013 | Clinical Gastroenterology and Hepatology2013，，7： | 3 |
| 9 | A decomposition approach to job-shop scheduling problem with discretely controllable processing times显示文摘Job-shop scheduling problem with discretely controllable processing times (JSP-DCPT) is modeled based on the disjunctive graph, and the formulation of JSP-DCPT is presented. A three-step decomposition approach is proposed so that JSP-DCPT can be handled by solving a job-shop scheduling problem (JSP) and a series of discrete time-cost tradeoff problems. To simplify the decomposition approach, the time-cost phase plane is introduced to describe tradeoffs of the discrete time-cost tradeoff problem, and an extreme mode-based set dominant theory is elaborated so that an upper bound is determined to cut discrete time-cost tradeoff problems generated by using the proposed decomposition approach. An extreme mode-based set dominant decomposition algorithm (EMSDDA) is then proposed. Experimental simulations for instance JSPDCPT_FT10, which is designed based on a JSP benchmark FT10, demonstrate the effectiveness of the proposed theory and the decomposition approach. | NIU GangGang SUN ShuDong LAFON Pascal YANG HongAn | 2011 | Science China(Technological Sciences)2011，54，5： | 2 |
| 10 | Pre-deformation for Assembly Performance of Machine Centers显示文摘The current research of machine center accuracy in workspace mainly focuses on the poor geometric error subjected to thermal and gravity load while in operation,however,there are little researches focusing on the effect of machine center elastic deformations on workspace volume.Therefore,a method called pre-deformation for assembly performance is presented.This method is technically based on the characteristics of machine tool assembly and collaborative computer-aided engineering(CAE)analysis.The research goal is to enhance assembly performance,including straightness,positioning,and angular errors,to realize the precision of the machine tool design.A vertical machine center is taken as an example to illustrate the proposed method.The concept of travel error is defined to obtain the law of the guide surface.The machine center assembly performance is analyzed under cold condition and thermal balance condition to establish the function of pre-deformation.Then,the guide surface in normal direction is processed with the pre-deformation function,and the machine tool assembly performance is measured using a laser interferometer.The measuring results show that the straightness deviation of the Z component in the Y-direction is 158.9%of the allowable value primarily because of the gravity of the spindle head,and the straightness of the X and Y components is minimal.When the machine tool is processed in pre-deformation,the straightness of the Z axis moving component is reduced to 91.2%.This research proposes a pre-deformation machine center assembly method which has sufficient capacity to improving assembly accuracy of machine centers. | SUN Yongping WANG Delun DONG Huimin XUE Runiu YU Shudong | 2014 | Chinese Journal of Mechanical Engineering2014，27，3： | 2 |
| 11 | Effects of simulated microgravity on antioxidant system in testis of adult rats显示文摘Objective:To study the effects of simulated microgravity induced by tail-suspension on histological structures and antioxidant system in testis of adult rats.Methods:Forty Spraque-Dawley adult male rats were randomly divided into four groups,two experimental groups and two synchronic control groups.Rats in the two experimental groups were tail-suspended for 14 d and 28 d respectively,then serum hormone,testicular morphology and biochemical changes were evaluated.Results:Compared with the synchronic controls,serum testosterone(T)levels and testicular superoxide dismutase(SOD)significantly decreased(P < 0.05),while testicular malondialdehyde(MDA)significantly increased(P < 0.05)in tail-suspended rats.The changes were more prominent in the 28 d tail-suspended rats.In addition,hematoxylin and eosin(HE)staining showed that seminiferous tubules atrophied,spermatogenic cells decreased,and seminiferous epithelial cells disintegrated and shed,abnormal multinucleated giant cells appeared and the lumina were azoospermic in tail-suspended rats.Conclusion:Simulated microgravity induced by tail-suspension has a harmful effect on male reproduction of adult rats by decreasing the ability of testicular antioxidant defense. | Dangxia Zhou Shudong Qiu Ying Sun Jie Zhang Haixue Wang | 2006 | Journal of Nanjing Medical University2006，20，4： | 2 |
| 12 | Nucleation and growth mechanism of cefodizime sodium at different solvent compositions显示文摘 | Xinwei ZHANG Shudong ZHANG Xiaodan SUN Zequn YIN Quanjie LIU Xiwen ZHANG Qiuxiang YIN | 2013 | Frontiers of Chemical Science and Engineering2013，7，4： | 1 |
| 13 | An Object - Oriented Modeling Approach to Process Knowiedgc Management 显示文摘 | Zhang Houdao Sun Shudong Zhang Zhemning | 2008 | International Conference on Advanced Computer Theory and Engineering2008，，： | 1 |
| 14 | Integrated importance measure for multi-state coherent systems of k level显示文摘To verify the effectiveness of the integrated importance measure (IIM) for multi-state coherent systems of k level,the definition and physical meaning of IIM are demonstrated.Then,the improvement potential and Δ-importance measures are generalized to multi-state coherent systems based on the system performance level,and the relationships between IIM and traditional importance measures are discussed.The characteristics of IIM are demonstrated in both series and parallel systems.Also,an application to an oil transportation system is given.The comparison results show that: (i) IIM has some useful properties that are not possessed by traditional importance measures; (ii) IIM is effective in evaluating the component role in multi-state systems when the component reliability and the failure rate are simultaneously considered. | Xibin Zhao Shubin Si Hongyan Dui Zhiqiang Cai Shudong Sun | 2013 | Journal of Systems Engineering and Electronics2013，24，6： | 1 |
| 15 | Integrated importance measures of multi-state systems under uncertainty 显示文摘 | SI Shubin CAI Zhiqiang SUN Shudong | 2010 | Computers & Industrial Engineering2010，59，4： | 1 |
| 16 | Theory of constraints product mix optimization based on immune algo- rithm显示文摘 | WANG Junqiang SUN Shudong SI Shubin | 2009 | International Journal of Production Research2009，47，16： | 1 |
| 17 | Theory of constraints product mix optimisation based on immune algo- rithm显示文摘 | WANG Junqiang SUN Shudong SI Shubin | 2009 | International Journal of Production Research2009，47，16： | 1 |
| 18 | Effect of Fluoroquinolone Resistance on 14‐day Levofloxacin Triple and Triple Plus Bismuth Quadruple Therapy显示文摘 | Jingxian Liao Qing Zheng Xiao Liang Wei Zhang Qinjuan Sun Wenzhong Liu Shudong Xiao David Y. Graham Hong Lu | 2013 | Helicobacter2013，，5： | 1 |
| 19 | Fight sample degeneracy and impoverishment in particle filters: a review of intelligent approaches显示文摘 | Li Tiancheng Sun Shudong Tariq Pervez Sattar | 2014 | Expert Systems With Applications2014，41，8： | 1 |
| 20 | Deterministic Resampling:Unbiased Sampling to Avoid Sample Impoverishment in Particle Filters显示文摘 | Tariq Pervez Sattar Tiancheng Li Shudong Sun | | 0，，92： | 1 |
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