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| 1 | Effect of Preparation Methods on Mechanical Properties of PVA/HA Composite Hydrogel显示文摘Poly(vinyl alcohol) (PVA)/hydroxyapatite (HA) composite hydrogel specimens were prepared with 15% PVA and 1%,2%, 3%, 4% and 5% HA by repeated freezing-thawing. The tests of static and dynamic mechanical properties were carried out todiscuss the influence of different contents of HA and freezing-thawing cycles on the mechanical properties of PVA/HA compositehydrogel. The results of static mechanical tests showed that the PVA/HA composite hydrogel with 3% HA and ninefreezing-thawing cycles had excellent stress relaxation properties, higher relaxation ratio, lower stress equilibrium value andpresented better properties of creep and recovery. The results of dynamic mechanical test showed that the PVA/HA compositehydrogel with nine freezing-thawing cycles had higher storage modulus and loss modulus, so was the PVA/HA compositehydrogel with 3% HA. | Dekun Zhang~1, Junjie Duan~1, Dagang Wang~2, Shirong Ge~2 1. School of Materials Science and Engineering, China University of Mining and Technology Xuzhou 221116, P. R. China 2. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, P. R. China | 2010 | Journal of Bionic Engineering2010，7，3： | 8 |
| 2 | Pd embedded in porous carbon (Pd@CMK-3) as an active catalyst for Suzuki reactions: Accelerating mass transfer to enhance the reaction rate显示文摘 | Zhencai Wang Wei Chen Zhenliang Han Jie Zhu Na Lu Yun Yang Dekun Ma Ying Chen Shaoming Huang | 2014 | Nano Research2014，7，9： | 7 |
| 3 | Multidimensional CdS nanowire/CdIn2S4 nanosheet heterostructure for photocatalytic and photoelectrochemical applications显示文摘Nanomaterial 形状能在材料性质上有深刻效果,因此提供一个有效方法改进设计材料和设备的表演。象一个那样的多维的体系结构的合理制造维(1D ) 二维(2D ) 混合 nanomaterials 能集成单个部件的优点并且提供提高的功能。然而,因为 nanostructures 的不同生长机制,它仍然很正在质问制作 1D/2D 体系结构。这里,我们在场一新调停溶剂,出现为 CdS nanowire (NW ) 的合成的反应驱动的生长线路 /CdIn 2 S 4 nanosheet (NS ) 1D/2D 体系结构。同样获得的 CdS NW/CdIn 2 S 4 NS 结构为比单个部件切开的水展出高得多的 visible-light-responsive photocatalytic 活动。CdS NW/CdIn 2 S 4 NS heterostructure 进一步被制作进 photoelectrodes,哪个完成了 2.85 妈癩的可观的光电流密度?? | Ting Wang Yuanyuan Chai Dekun Ma Wei Chen Weiwei Zheng Shaoming Huang | 2017 | Nano Research2017，10，8： | 7 |
| 4 | Synthesis and Characterization of PVA-HA-Silk Composite Hydrogel by Orthogonal Experiment显示文摘 | Dekun Zhang Kai Chen Lin Wu Dagang Wang Shirong Ge | 2012 | Journal of Bionic Engineering2012，9，2： | 6 |
| 5 | A Facile Modifier-free Approach to Fabricate Antistatic Superhydrophobic Composite Coatings with Remarkable Thermal Stability and Corrosion Resistance显示文摘Research on antistatic superhydrophobic surfaces has attracted widespread attention in some fields.However,in the application of superhydrophobic materials,fabricating stable and practical superhydrophobic surfaces through facile and low-cost approaches still faces considerable challenges.Herein,a polyphenylene sulfide(PPS)-based antistatic superhydrophobic composite coating with a high water contact angle(166°)and a low sliding angle(2°)was fabricated on a Q345 steel surface through a simple spray-coating method without any modifier.Furthermore,the as-prepared superhydrophobic coating also displayed excellent superhydrophobicity for water droplets at different pH values,as well as self-cleaning,anti-fouling and anti-icing properties.Importantly,the superhydrophobic coating still exhibited superhydrophobicity after calcination at 350°C for 1 h,indicating its outstanding thermal stability.Excellent antistatic and anticorrosion properties were obtained on the prepared coating surface,which allows the coating to be applied under harsh conditions.Benefiting from the above characteristics,compared with the commercial coating,the as-obtained antistatic superhydrophobic coating may be applied more widely in related fields. | Xiang Liu Dekun Zhang Zhiguang Guo | 2020 | Journal of Bionic Engineering2020，17，3： | 6 |
| 6 | Investigation of ZSM-5/MCM-41 Composite Molecular Sieve for Reducing Olefin Content of FCC Gasoline显示文摘ZSM-5/MCM-41 composite molecular sieve was prepared by the nano-assembling method.The ZSM-5 molecular sieve,the MCM-41 molecular sieve,the ZSM-5/MCM-41 mechanical mixture and the ZSM-5/MCM-41 composite molecular sieve were characterized by X-ray powder diffractometry,N2 adsorption isotherms,temperature programmed desorption of ammonia and scanning electron microscopy and their properties were analyzed.Using FCC gasoline as the feed,activities of different molecular sieves for reducing olefin content were investigated in a continuous high-pressure micro-reactor unit under the following conditions:a reaction temperature of 400℃,a reaction time of 2 h,a weight hourly space velocity of 3h-1,and a reaction pressure of 2.0 MPa.The results showed that the HMCM-41 molecular sieve had low reaction performance,and the HZSM-5 molecular sieve demonstrated high aromatization activity,while the ZSM-5/MCM- 41 composite molecular sieve exhibited a best olefin-reducing performance because of its high isomerization activity and moderate aromatization activity.With a largest olefin-reducmg capability and a reasonable distribution of products,the composite molecular sieve was more suitable for FCC gasoline upgrading compared to other three catalysts. | Ji Dekun~(1,2) Li Shuyuan~1 Ding Fuchen~2 Chi Yaoling~2 (1.Chemical Engineering School,China University of Petroleum(Beijing),Beijing 102249 2.Department of Chemical Engineering,Beijing Institute of Petrochemical Technology) | 2009 | China Petroleum Processing & Petrochemical Technology2009，11，4： | 5 |
| 7 | Preparation and properties of a new cutting pick of coal shearers显示文摘Reliability and wear resistance of cutting picks play a significant role in coal mine exploitation with coal shearers.Tool bit separation,blade breaking,severe erosion of the cutting body and fatigue fractures are the main reasons for failure of cutting picks.We carried out carburization on a 30CrMnMo alloy to synthesize a new cutting pick material with improved mechanical properties and high wear resistance.The results indicated that carburization can effectively strengthen the surface of the 30CrMnMo alloy by forming a thick carburized layer and thus significantly improve the surface hardness and wear resistance.In addition,the excellent toughness of 30CrMnMo alloy as a substrate of cutting picks can prevent brittle ruptures and fatigue fractures under high impact stress conditions.The significant decrease in both frictional coefficient and rate of erosion of this carburized 30CrMnMo alloy suggests that this alloy is a potential material for cutting picks of coal shearers after rational carburization. | LUO Yong ZHANG Dekun WANG Qingliang LIU Hongtao CHENG Gang GE Shirong | 2010 | Mining Science and Technology2010，20，5： | 5 |
| 8 | Temperature-controlled ionic liquid dispersive liquid phase microextraction combined with ultra-high-pressure liquid chromatography for the rapid determination of triclosan,triclocarban and methyl-triclosan in aqueous samples显示文摘As extraction solvents,ionic liquids have green characteristics.In this study,an environmentally benign analytical method termed temperature-controlled ionic liquid dispersive liquid phase microextraction (TIL-DLME) combined with ultra-highpressure liquid chromatography (UHPLC)-tunable ultraviolet detection (TUV) was developed for the pre-concentration and determination of triclosan (TCS),triclocarban (TCC) and methyl-triclosan (M-TCS) in water samples.Significant parameters that may affect extraction efficiencies were examined and optimized,including the types and amount of ionic liquids,volume of the diluent,heating temperature,cooling time,salt effect and pH value.Under the optimum conditions,linearity of the method was observed in the ranges of 0.0100-100 μgL-1 for TCS and M-TCS,and 0.00500-50.0 μgL-1 for TCC with correlation coefficients (r2) > 0.9903.The limits of detection (LODs) ranged from 1.15 to 5.33 ngL-1.TCS in domestic water and TCC in reclaimed water were detected at the concentrations of 1.01 and 0.126 μgL-1,respectively.The spiked recoveries of the three target compounds in reclaimed water,irrigating water,waste water and domestic water samples were obtained in the ranges of 68.4%-71.9%,61.6%-87.8%,58.9%-74.9% and 64.9%-92.4%,respectively.Compared with the previous dispersive liquid-liquid microextraction method (DLLME) about the determination of TCS,TCC and M-TCS,this method is not only more environmentally friendly but also more sensitive. | GUO JieHong 1,2,LI XingHong 2,CAO XueLi 1,QU Lei 2,3,HOU DeKun 2 & XU XiaoBai 2 1 School of Chemical and Environmental Engineering,Beijing Technology and Business University,Beijing 100048,China 2 State Key Laboratory of Environmental Chemistry and Eco-toxicology Research Center of Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China 3 Zhengzhou University,Zhengzhou 450001,China | 2010 | Science China Chemistry2010，53，12： | 5 |
| 9 | 防止海上事件与中美海上军事互信机制建设(英文)显示文摘This paper seeks to analyze the deficiencies, underlying flaws, and prospects of the Sino-US military maritime safety consultation mechanism, based on maritime incident prevention theories and typical cases. It also on also offers suggestions on the future development of the Sino-US maritime offers maritime confidence-building mechanism. | Zhang Yuan Hu Dekun | 2014 | 国际问题研究2014，，2： | 4 |
| 10 | Research on the friction and wear mechanism of Poly(vinyl alcohol)/hydroxylapatite composite hydrogel显示文摘Poly(vinyl alcohol)/Hydroxylapatite(PVA/HA) composite hydrogel was prepared with poly(vinyl alcohol) and hydroxylapatite as raw materials, using the method of repeated freezing and thawing.The morphologies of PVA/HA composite hydrogel were observed by means of high-accuracy 3D profiler and scanning electron microscope(SEM).The compressive elastic modulus and the stress relaxation characteristics of PVA/HA composite hydrogel were measured using the flat-head cylinder indenter.The friction and wear tests between PVA/HA composite hydrogel and bovine knee articular cartilage were performed on the micro-tribometer.The worn morphologies of PVA/HA composite hydrogel were observed with environmental scanning electron microscope(ESEM).The results showed that PVA/HA composite hydrogel has the cross-link network microstructure which is similar to that of the natural bovine knee articular cartilages.With the increase of freezing-thawing cycles and the HA content, the degree of cross-link and the crystallization of PVA/HA composite hydrogel both increase, the elastic modulus increases evidently, the rate of stress relaxation is improved and the value of balance stress decreases.The friction coefficient decreases with the increase of the freezing-thawing cycles and the HA content.The more the freezing-thawing cycles are, the earlier the friction coefficient reaches the stable balance value.The friction deformation depth between PVA/HA composite hydrogel and bovine knee articular cartilage is inversely proportional to freezing-thawing cycles and the HA content.The main wear mechanisms of PVA/HA composite hydrogel are plastic flowing and adhesive flaking.The wear severity degree decreases with the increase of freezing-thawing cycles and the HA content. | ZHANG DeKun SHEN YanQiu GE ShiRong | 2009 | Science China(Technological Sciences)2009，52，8： | 3 |
| 11 | Effect of fretting amplitudes on fretting wear behavior of steel wires in coal mines显示文摘Given that fretting wear causes failure in steel wires, we carried out tangential fretting wear tests of steel wires on a self-made fretting wear test rig under contact loads of 9 and 29 N and fretting amplitudes ranging from 5 to 180 μm. We observed morphologies of fretted steel wire surfaces on an S-3000N scanning electron microscope in order to analyze fretting wear mecha-nisms. The results show that the fretting regime of steel wires transforms from partial slip regime into mixed fretting regime and gross slip regime with an increase in fretting amplitudes under a given contact load. In partial slip regime, the friction coefficient has a relatively low value. Four stages can be defined in mixed fretting and gross slip regimes. The fretting wear of steel wires in-creases obviously with increases in fretting amplitudes. Fretting scars present a typical morphology of annularity, showing slight damage in partial slip regime. However, wear clearly increases in mixed fretting regime where wear mechanism is a combination of plastic deformation, abrasive wear and oxidative wear. In gross slip regime, more severe degradation is present than in the other regimes. The main fretting wear mechanisms of steel wires are abrasive wear, surface fatigue and friction oxidation. | SHEN Yan, ZHANG Dekun, GE Shirong School of Materials Science and Engineering, China University of Mining & Technology, Xuzhou 221116, China | 2010 | Mining Science and Technology2010，20，6： | 3 |
| 12 | Electrochemical corrosion behavior of steel wires in a coalmine with a corrosive medium显示文摘6 脳升起电报的 19 点接触被用作我们的研究目标在一个实验室检验钢电线的腐蚀的进步,在 coalmine 模仿实际工作条件。一个电气化学的方法被用来与腐蚀剂酸溶液的不同表面处理调查钢电线的腐蚀行为。在当,赤裸的钢电线的阳极激活过程最快的地方,结果证明钢电线的阳极激活主要发生在腐蚀前期间是他们的相应腐蚀速度,当涂的钢电线和他们的相应腐蚀加速的油的阳极激活过程最低时。在中间、迟了的沉浸时期期间,一部被动电影在钢电线的表面上被产生,它逐渐地与时间的推移被损坏。本地 pitting 腐蚀与一个高极化的潜力在钢电线的表面上容易发生。合适的相等的电路被选择在各种各样的腐蚀剂时间和不同表面处理适合钢电线的电气化学的阻抗光谱学(EIS ) ,它显示好恰当的结果。双电的层费用转移抵抗在顺序增加:赤裸的钢电线,未经治疗的钢电线和油涂的钢电线和他们的腐蚀抵抗接着减少,它与他们的极化曲线一致。油层在未经治疗的钢电线上提供某个保护的效果,但是它的效果不是完全清楚的。 | Wang Songquan Zhang Dekun Wang Dagang Zhang Zefeng | 2011 | Mining Science and Technology2011，21，1： | 3 |
| 13 | Overexpression of Hdac6 enhances resistance to virus infection in embryonic stem cells and in mice显示文摘亲爱的编辑, | Dekun Wang Qingwen Meng Lihong Huo Meng Yang Lingling Wang Xinyu Chen JianchaoWang Zhiguo Li Xiaoying Ye Na Liu Qiuyan Li Zhen Dai Hongsheng Ouyang Ning Li Jun Zhou Lingyi Chen Lin Liu | 2015 | Protein & Cell2015，6，2： | 3 |
| 14 | Research on the Interstitial Fluid Load Support Characteristics and Start-Up Friction Mechanisms of PVA-HA-Silk Composite Hydrogel显示文摘 | Kai Chen Dekun Zhang Zuming Dai Songquan Wang Shirong Ge | 2014 | Journal of Bionic Engineering2014，11，3： | 3 |
| 15 | Amorphous M0S2 confined in nitrogen-doped porous carbon for improved electrocatalytic stability toward hydrogen evolution reaction显示文摘Developing non-precious metal catalysts with high activity and stability for electrochemical hydrogen evolution reaction(HER)is of great significance in both scie nee and tech no logy.In this work,N-doped CMK-3,which was prepared with a casting method using SBA-15 as thehard template and ammonia as the nitrogen source,has been utilized to hold MoS2 and restrict its growth to form MoS2@N-CMK-3 composite.As a result,M0S2 was found to have poorly crystallized and the limited space of porous N-CMK-3 made its size much small.Then there are moreactive sites in MoS2.Accordingly,MoS2@N-CMK-3 has exhibited good electrocatalytic performance toward HER in acids with a quite small Tafelslope of 32 mV·dec^-1.And more importantly,compared to MoS2@CMK-3,its stability has been greatly improved,which can be attributedto the interaction between M0S2 and nitrogen atoms avoiding aggregation and mass loss.This work provides an idea that doping a porouscarbon support with nitrogen is an effective way to enhance the stability of the catalyst. | Shaojie Lu Wenjing Wang Shengshuang Yang Wei Chen Zhongbin Zhuang Wenjing Tang Caihong He Jiajing Qian Dekun Ma Yun Yang Shaoming Huang | 2019 | Nano Research2019，12，12： | 2 |
| 16 | Coordination of glycerol utilization and clavulanic acid biosynthesis to improve clavulanic acid production in Streptomyces clavuligerus显示文摘The glycerol utilization (gyl) operon is involved in clavulanic acid (CA) production by Streptomyces clavuligerus, and possibly supplies the glyceraldehyde-3-phosphate (G3P) precursor for CA biosynthesis. The gyl operon is regulated by GylR and is induced by glycerol. To enhance CA production in S. clavuligerus, an extra copy of ccaR expressed from Pgyl (the gyl promoter) was integrated into the chromosome of S. clavuligerus NRRL 3585. This construct coordinated the transcription of CA biosynthetic pathway genes with expression of the gyl operon. In the transformants carrying the Pgyl-controlled regulatory gene ccaR, CA production was enhanced 3.19-fold in glycerol-enriched batch cultures, relative to the control strain carrying an extra copy of ccaR controlled by its own promoter (PccaR). Consistent with enhanced CA production, the transcription levels of ccaR, ceas2 and claR were significantly up-regulated in the transformants containing Pgyl-controlled ccaR. | GUO DeKun ZHAO YouBao YANG KeQian | 2013 | Science China(Life Sciences)2013，56，7： | 2 |
| 17 | Methane coupling in microwave plasma under atmospheric pressure显示文摘Methane coupling in microwave plasma under atmospheric pressure has been investigated.The effects of molar ratio n(CH4)/n(H2),flow rate and microwave power on the reaction have been studied.(1)With the decrease of n(CH4)/n(H2)ratio,methane conversion,C2 hydrocarbon yield,energy yield and space-time yield of acetylene increased,but the yield of carbon deposit decreased.(2)With the increase of microwave power,energy yield of acetylene decreased,but space-time yield of acetylene increased.(3)With the increase of flow rate,energy yield and space-time yield of acetylene increased first and then decreased.Finally,under the reaction conditions of CH4 flow rate of 700 mL/min,n(CH4)/n(H2)ratio of 1/4 and microwave power of 400 W,the energy yield and space-time yield of acetylene could reach 0.337 mmol/kJ and 12.3 mol/(s m3),respectively.The reaction mechanism of methane coupling in microwave plasma has been investigated based on the thermodynamics of chemical reaction.Interestingly,the acetylene yield of methane coupling in microwave plasma was much higher than the maximum thermodynamic yield of acetylene.This phenomenon was tentatively explained from non-expansion work in the microwave plasma system. | Changsheng Shen Dekun Sun Hongsheng Yang | 2011 | Journal of Natural Gas Chemistry2011，20，4： | 2 |
| 18 | Optical properties of conductive silver-nanowire films with different nanowire lengths显示文摘 | Xiaoming Yu Xuan Yu Jianjun Zhang Liqiao Chen Yunqian Long Dekun Zhang | 2017 | Nano Research2017，10，11： | 2 |
| 19 | Effect of various kinematic parameters of mine hoist on fretting parameters of hoisting rope and a new fretting fatigue test apparatus of steel wires显示文摘 | Dagang Wang Dekun Zhang Zefeng Zhang Shirong Ge | 2012 | Engineering Failure Analysis2012，，： | 2 |
| 20 | Statistical Analysis of Regularity of Pesticide Residues in Vegetables Produced in Inner Mongoli显示文摘[Objective]The paper was to study regularity of pesticide residues in vegetables produced in Inner Mongolia.[Method]Mathematical statistic analysis was carried out on 6 800 samples of veggies,fruits,leguminous vegetables,nuts and seeds produced in Inner Mongolia.[Result]The dominated vegetables in Inner Mongolia were green leafy vegetables,solanaceous vegetables and melon vegetables,and their yields accounted for 70%of the total vegetables production.Since 2003,with the rapid increase of detected vegetable numbers,the status of vegetable quality safety had entered into a new stage of sustainable steady after a rapid decline or periodic fluctuation,and the differences in safety levels were obvious,of which the range of exceeding standard rate of pesticide residues in solanaceous vegetables,melon vegetables and leguminous vegetables(about 55%of the total vegetables)was under 2%,with average values of 1.1%,1.6%and 3.1%,respectively.They belonged to stable type.The exceeding standard rate of pesticide residues in green leafy vegetables and Chinese cabbage group(about 30%of total vegetables)presented a decreasing trend year by year,wondering in the range of 7%-10%.They belonged to main risk type.The time period of exceeding standard of pesticide residues in root vegetables and cole vegetables was under predictable,and its exceeding standard rate in some years was over 5%(amplitude variation is over 15percentage points).They belonged to random risk type.The kinds of pesticides,which exceeding standard rate in vegetables were relatively intensive,presented variance in different vegetable species.70%of the pesticides belonged to intermittent over-limits and the probability was below 5%.About 20%tradition pesticides often exceeded standard and their probabilities were over 30%.The exceeding standard of organophosphorus and carbamates pesticides in vegetables presented a decreasing tend,while the risk of some new pesticides containing nitrogen element and high effective pyrethroids showed an increasing tendency.[Conclusion]The paper provided decision making services for agricultural management departments. | Fujin ZHANG Dekun HOU Jiang HE Tianyun GAO Hong LUO Songyan LANG Xinxin ZHANG Yiping YAO | 2013 | Agricultural Science & Technology2013，14，10： | 2 |
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