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| 1 | Vascularity of hepatic VX2 tumors of rabbits: Assessment with conventional power Doppler US and contrast enhanced harmonic power Doppler US显示文摘AIM: To investigate the characteristics of the vascularity ofhepatic metastasis.METHODS: Six New Zealand rabbits, weighing averagely2.7±0.4 kg, were selected and operated to establish hepaticVX2 tumor carrier model. Hepatic VX2 tumors were thenimaged with conventional B mode US, second harmonicimaging (SHI), color Doppler flow imaging (CDFI), powerDoppler imaging (PDI) and harmonic PDI by a transducerS8 connected to HP-5 500 ultrasound system. A kind of selfmade echo contrast agent was intravenously injected at adose of 0.01 mL/kg through ear vein, and then the venouspassage was cleaned with sterilized saline.RESULTS: Totally, 6 hypoechoic lesions and 3 hyperechoiclesions were found in the six carrier rabbits with a mean sizeabout 2.1±0.4 cm under conventional B mode ultrasound, theywere oval or round in shape with a dear outline or a hypoechoichalo at the margin of the lesions. Contrast agent could notchange the echogenicity of the lesions under conventional Bmode and SHI, however, it could greatly increase the flowsensitivity of the lesions under PDI and harmonic PDI. Nutrientartery of these metastatic lesions might also be well depictedunder contrast enhanced PDI and harmonic PDI.CONCLUSION: Our result suggested that contrast enhancedPDI, especially harmonic PDI, was a promised method inthe detection of vascularity of hepatic tumor nodules. | Wen-Hua Du Wei-Xiao Yang Xiang Wang Xiu-Qin Xiong Yi Zhou Tao Li Department of US, Daping Hospital & Research Institute of Surgery, the Third Military Medical University, Chongqing 400042, China | 2003 | World Journal of Gastroenterology2003，9，2： | 17 |
| 2 | Growth and nutrient dynamics of Betula alnoides seedlings under exponential fertilization显示文摘Betula alnoides is a fast-growing hardwood species grown in large plantations in Southeast Asia and South China.Nitrogen requirements for producing robus seedlings,growth and nutrient dynamics were investigated using exponential fertilization treatments.Root collar diameter,height,dry mass and nutrient contents of seedlings increased exponentially in all fertilization treatments as time progressed.Moreover,with water soluble fertilizer(Plant Products plus microelements N–P_2O_5–K_2O:20–20–20),300 mg N seedling^(-1)was adequate.Vector analysis revealed that P was the most responsive nutrient element followed by N and K.Dilutions of N and K were evident in the plants without N addition,which induced initial P sufficiency and then luxury consumption probably due to the antagonistic interaction between N and P.However deficiencies of N,P and K were mostly observed in al exponential regimes during the experiment because seedling growth rate exceeded nutrient uptake rate,inferring that further study on improving the nutrient uptake efficiency is needed.Analysis of relationships among nutrient supply,dry mass,N content and N concentration demonstrated that 100–400 mg N seedling^(-1)induced sufficiency to luxury consumption of nitrogen without significant change in dry mass,and 400 mg N seedling^(-1)is recommended to apply for nutrient loading of seedlings before outplanting.The findings will help improve seedling quality and enhance the production of robust seedlings for plantation forestry of this species. | Lin Chen Chunsheng Wang Bernard Dell Zhigang Zhao Junjie Guo Daping Xu Jie Zeng | 2018 | Journal of Forestry Research2018，29，1： | 14 |
| 3 | Flexible and transparent graphene/silver-nanowires composite ?lm for high electromagnetic interference shielding effectiveness显示文摘Herein, an efficient approach to prepare flexible, transparent, and lightweight films based on graphene nanosheets(GNS) and silver nanowires(AgNWs) for high electromagnetic interference(EMI) shielding effectiveness(SE) has been explained. High-conductive GNS were fabricated by liquid phase stripping and composited with AgNWs by a two-step spin-coating method. Owing to the high transparency, good conductivity, and homogeneous distribution of both GNS and AgNWs, the obtained GNS/AgNWs film exhibits superb EMI SE and light transmittance, yielding a significantly high EMI SE up to 26 dB in both Ku-band and K-band and light transmittance higher than 78.4%. Moreover, this GNS/AgNWs film shows good flexibility and excellent structural stability. The obtained flexible, light and transparent film could have a great potential for transparent EMI shielding and smart electronics. | Ning Zhang Zhe Wang Rongguo Song Qianlong Wang Hongye Chen Bin Zhang Haifei Lv Zhi Wu Daping He | 2019 | Science Bulletin2019，64，8： | 12 |
| 4 | Highly sensitive wearable sensor based on a flexible multi-layer graphene film antenna显示文摘The use of advanced carbon nanomaterials for flexible antenna sensors has attracted great attention due to their outstanding electromechanical properties. However, carbon nanomaterial based composites have yet to overcome drawbacks, such as low conductivity and toughness. In this work, a flexible multi-layer graphene film(FGF) with a high conductivity of 10~6 S/m for antenna based wearable sensors is investigated. A 1.63 GHz FGF antenna sensor exhibits significantly high strain sensitivity of 9.8 for compressive bending and 9.36 for tensile bending, which is super than the copper antenna sensor(5.39 for compressive bending and 4.05 for tensile bending). Moreover, the FGF antenna sensor shows very good mechanical flexibility, reversible deformability and structure stability, and thus is well suited for applications like wearable devices and wireless strain sensing. | Danli Tang Qianlong Wang Zhe Wang Quantao Liu Bin Zhang Daping He Zhi Wu Shichun Mu | 2018 | Science Bulletin2018，63，9： | 7 |
| 5 | Study of high-precision earth sensor with triple-FOV显示文摘Earth sensors are widely used in spacecraft for attitude determination. They need to have a very large field of view(FOV)( > 120°) and relatively low accuracy while being used in the aircrafts around orbit. A triple-FOV infrared earth sensor is proposed in this paper. It uses three pieces of standard infrared detectors with a wavelength range of 14;16μm,to sense the horizontal circle by detecting the infrared light emitted from the earth. From which,the geocentric vector can be obtained. A mathematic model is established and a validation model is set up to provide input parameters for the mathematic model. The simulation results of the two models show that the output of the mathematic model coincides with the known parameters. Based on the above analysis,a prototype has been built and tested. The test results show that the angle measurement error is about 0. 002° and hence such a triple-FOV earth sensor is capable to provide high-precision position information for autonomous navigation. | WANG Hongjian XING Fei YOU Zheng CHU Daping ZHENG Lungui | 2014 | Instrumentation2014，1，2： | 6 |
| 6 | Radar maneuvering target tracking algorithm based on human cognition mechanism显示文摘Radar Maneuvering Targets Tracking(RMTT) in clutter is a quite challenging issue due to the errors in the models and the varying dynamics of the processes. Modern radar tracking system calls for the adaptive signal and data processing algorithm urgently to adapt the uncertainty of the environment. The mechanism of human cognition can help persons cope with the similar diffi-culties in visual tracking. Inspired by human cognition mechanism, a comprehensive method for RMTT is proposed. In the method, the model transition probability in Interacting Multiple Model(IMM) and the validation gate can be adjusted dynamically with target maneuver;the waveform in radar transmitter can vary with the perception of the environment. Experimental results in cluttered scenes show that the proposed algorithm is more accurate for perceiving the environment and targets, and the waveform selection algorithm is better than that with fixed waveform. | Shuliang WANG Daping BI Huailin RUAN Mingyang DU | 2019 | Chinese Journal of Aeronautics2019，32，7： | 4 |
| 7 | Assessment of hepatic VX2 tumors of rabbits with second harmonic imaging under high and low acoustic pressures显示文摘AIM: To investigate the possible clinical application value of second harmonic imaging under low acoustic pressure.METHODS: Six New Zealand rabbits, averaging 2.7±0.4kg, were selected and operated upon to construct hepatic VX2 tumor carrier model. Hepatic VX2 tumors were imaged with B mode Ultrasonography (US), and second harmonic imaging (SHI) under high mechanic index (1.6) and low mechanic index (0.1). Echo agent was intravenously injected through ear vein at a dose of 0.01 mL/kg under B mode US and high MI SHI, and 0.05 mL/kg under low MI SHI, and then the venous channel was cleaned with sterilized saline.All the images were recorded by magnetic optics (MO),and they were analyzed further by at least two independent experienced sonographers.RESULTS: Totally 6 hypoechoic and 3 hyperechoic lesions were found in the six carrier rabbits with a mean size about 2.1±0.4 under B mode ultrasound, they were oval or round in shape with a clear outline or a hypoechoic halo at the margin of the lesions. Contrast agent could not change the echogenicity of the lesions under B mode US and SHI under high acoustic pressure. However, it could greatly increase the real time visualization sensitivity of the lesions with SHI under low acoustic pressure.CONCLUSION: Our results suggest that contrast enhanced SHI with low MI and a bubble non-destructive method would be much more helpful than conventional SHI in our future clinical applications. | Wen-Hua Du Wei-Xiao Yang Xiang Wang Xiu-Qin Xiong Yi Zhou Tao Li, Department of Ultrasonography, Daping Hospital and Research Institute of Surgery, the Third Military Medical University, Chongqing 400042, China | 2003 | World Journal of Gastroenterology2003，9，8： | 3 |
| 8 | IN SlTU TRUING/DRESSING OF DIAMOND WHEEL FOR PRECISION GRINDING显示文摘An application for achieving on-machine truing/dressing and monitoring of diamond wheel is dealt with in dry grinding.A dry electrical discharge(ED)assisted truing and dressing method is adopted in preparation of diamond grinding wheels.Effective and precise troing/dressing of a diamond wheel is carried out on a CNC curve grinding machine by utilizing an ED assisted diamond dresser.The dressed wheel is monitored online by a CCD vision system.It detects the topography changes of a wheel surface.The wear condition is evaluated by analyzing the edge deviation of a wheel image.The benefits of the proposed methods are confirmed by the grinding experiments.The designed truing/dressing device has high material removal rate,low dresser wear,and hence guarantees a desired wheel surface.Real-time monitoring of the wheel profile facilitates determining the optimum dressing amount,dressing interval,and the compensation error. | WAN Daping WANG Yan HU Dejin | 2008 | Chinese Journal of Mechanical Engineering2008，21，3： | 3 |
| 9 | Effect of organic carbon on nitrification effciency and community composition of nitrifying biofilms显示文摘The effects of organic carbon/inorganic nitrogen(C/N) ratio on the nitrification processes and the community shifts of nitrifying biofilms were investigated by kinetic comparison and denaturing gradient gel electrophoresis(DGGE) analysis.The results showed that the nitrification rate decreased with an increasing organic concentration.However,the effect became weak when the carbon concentration reached a suffciently high level.Denitrification was detected after organic carbon was added.The 12 h ammonium removal rate ranged from 85% to 30% at C/N = 0.5,1,2,4,8,and 16,as compared to the control(C/N = 0).The loss of nitrogen after 24 h at C/N = 0.5,1,2,4,8,and 16 was 31%,18%,24%,65%,59%,and 62%,respectively.The sequence analysis of 16S rRNA gene fragments revealed that the dominant populations changed from nitrifying bacteria(Nitrosomonas europaea and Nitrobacter sp.) to denitrifying bacteria(Pseudomonas sp.,Acidovorax sp.and Comamonas sp.) with an increasing C/N ratio.Although at high C/N ratio the denitrifying bacteria were the dominant populations,nitrifying bacteria grew simultaneously.Consequently,nitrification process coexisted with denitrification. | HU Jie LI Daping LIU Qiang TAO Yong HE Xiaohong WANG Xiaomei LI Xudong GAO Ping | 2009 | Journal of Environmental Sciences2009，21，3： | 3 |
| 10 | Fuzzy Views on Black-Litterman Portfolio Selection Model显示文摘 | FANG Yong BO Lin ZHAO Daping WANG Shouyang | 2018 | Journal of Systems Science & Complexity2018，31，4： | 2 |
| 11 | Experimental Study on Structural Optimization of a Supercritical Circulating Fluidized Bed Boiler with an Annular Furnace and Six Cyclones显示文摘Annular furnace CFBs with six cyclones represent new designs for large capacity CFB boilers over 660 MW. To investigate the gas-solid flow non-uniformity and its main influencing factors, an experimental study was carried out in the cold-test rig of an annular furnace CFB with six cyclones. The influence of furnace structure and cyclone arrangement on the non-uniformity of gas-solid flow was obtained. On the basis of these findings, the structure of the annular furnace CFB with six cyclones was optimized, and an optimal structure was obtained. The results show that for newly designed annular furnace CFBs, the non-uniformity of gas-solid flow among loops is no greater than that of traditional CFBs. In terms of uniformity, side cyclones rotating inward are superior to those rotating outward. The position of the side cyclones determines the basic solid circulating rate distribution trend and can dramatically improve flow non-uniformity. The middle cyclone positions and the symmetric modes of the cyclones do not determine the solid circulating rate distribution trend and have less effect on DEVGs. Forty-five degree chamfers of outer ring walls can reduce wall erosion and the non-uniformity of gas-solid flow in the circulating fluidized bed. Regarding the operating and structural conditions in this work, the optimal structure of annular furnace CFBs is Type 6: side cyclones rotating inward and b = a/2, d = 0.1c; the center of the middle cyclone inlet located at the centerline of the furnace cross-section; cyclones on the two sides of the furnace in an axisymmetric arrangement; and a furnace corner shape of 45° chamfers. Under the given operating conditions, the DEV_(Gs) for the optimal structure are approximately 4.0%~10.3%. | WANG Xiaofang SHUAI Daping LYU Qinggang | 2017 | Journal of Thermal Science2017，26，5： | 2 |
| 12 | Interleukin 1 beta-induced chloride currents are important in osteoarthritis onset:an in vitro study显示文摘Persistent hypotonic and inflammatory conditions in the joint cavity can lead to the loss of cartilage matrix and cell death,which are the important mechanisms of osteoarthritis(OA)onset.Previous studies have confirmed that the existence of a hypotonic environment is a red flag for inflammation,as hypotonic environment induces the opening of the chloride channel of the cell and promotes chloride ion efflux,which prompts the cell volume to increase.Chloride channels play an important role in the regulation of mineralization and chondrocyte death.Here,we reported that OA chondrocytes showed a significant increase of cell death rate and the imbalance of cartilage matrix catabolism.We found that the distribution of skeleton protein F-actin was disordered.In addition,the volume-sensitive chloride current of OA chondrocytes decreased significantly with the increase of the expression levels of inflammation-related proteins caspase-1,caspase-3,and NLRP3.Moreover,interleukin-1β(IL-1β)showed a potential to activate the chloride current of normal chondrocytes.These results indicate that IL-1β-induced chloride channel opening in chondrocytes may be closely related to the occurrence of OA.This chloride channel opening process may therefore be a potential target for the treatment of OA. | Zhiqin Deng Zicong Lin Qing Zhong Minqiang Lu Huankun Fang Jianquan Liu Li Duan Lixin Chen Liwei Wang Daping Wang Wencui Li | 2021 | Acta Biochimica et Biophysica Sinica2021，53，4： | 2 |
| 13 | Ultra-small platinum nanoparticles segregated by nickle sites for efficient ORR and HER processes显示文摘In the electrochemical process,Pt nanoparticles(NPs)in Pt-based catalysts usually agglomerate due to Oswald ripening or lack of restraint,ultimately resulting in reduction of the active sites and catalytic efficiency.How to uniformly disperse and firmly fix Pt NPs on carbon matrix with suitable particle size for catalysis is still a big challenge.Herein,to prevent the agglomeration and shedding of Pt NPs,Ni species is introduced and are evenly dispersed in the surface of carbon matrix in the form of Ni-N-C active sites(Ni ZIF-NC).The Ni sites can be used to anchor Pt NPs,and then effectively limit the further growth and agglomeration of Pt NPs during the reaction process.Compared with commercial Pt/C catalyst,Pt@Ni ZIF-NC,with ultralow Pt loading(7 wt%)and ideal particle size(2.3 nm),not only increases the active center,but also promotes the catalysis kinetics,greatly improving the ORR and HER catalytic activity.Under acidic conditions,its half-wave potential(0.902 V)is superior to commercial Pt/C(0.861 V),and the mass activity(0.38 A per mg Pt)at 0.9 V is 4.7 times that of Pt/C(0.08 A per mg Pt).Besides,it also shows outstanding HER performance.At 20 and 30 mV,its mass activity is even 2 and 6 times that of Pt/C,respectively.Whether it is under ORR or HER conditions,it still shows excellent durability.These undoubtedly indicate the realization of dual-functional catalysts with low-Pt and high-efficiency properties. | Lvhan Liang Huihui jin Huang Zhou Bingshuai Liu Chenxi Hu Ding Chen Jiawei Zhu Zhe Wang Hai-Wen Li Suli Liu Daping He Shichun Mu | 2022 | Journal of Energy Chemistry2022，31，2： | 2 |
| 14 | A novel non-precious metal catalyst synthesized via pyrolysis of polyaniline-coated tungsten carbide particles for oxygen reduction reaction显示文摘 | Kezhu Jiang Qingmin Jia Mingli Xu Daping Wu Lunquan Yang Guotao Yang Linyan Chen Guanghua Wang Xikun Yang | 2012 | Journal of Power Sources2012，，： | 1 |
| 15 | CO2 Laser Beam Modulating for Surface Texturing Machining 显示文摘 | Daping Wan Hongbin Liu Yuming Wang | 2008 | Optics & Laser Technology2008，40，1： | 1 |
| 16 | Telomerase Reverse Transcriptase Gene Promoter Mutations Help Discern the Origin of Urogenital Tumors: A Genomic and Molecular Study显示文摘 | Song Wu Peide Huang Chong Li Yi Huang Xianxin Li Yongqiang Wang Chao Chen Zhaojie Lv Aifa Tang Xiaojuan Sun Jingxiao Lu Weiping Li Jie Zhou Yaoting Gui Fangjian Zhou Daping Wang Zhiming Cai | 2013 | European Urology2013，，： | 1 |
| 17 | Feedrate scheduling and jerk control algorithm for high-speed CNC machining显示文摘 | WAN Daping WANG Shilong ZHU Caichao | 2009 | International Journal of Manufacturing Technology and Management2009，17，3： | 1 |
| 18 | A novel non-precious metal catalyst synthesized via pyrolysis of polyaniline-coated tungsten carbide particles for oxygen reduction reaction显示文摘 | Kezhu Jiang Qingmin Jia Mingli Xu Daping Wu Lunquan Yang Guotao Yang Linyan Chen Guanghua Wang Xikun Yang | 2012 | Journal of Power Sources2012，，： | 1 |
| 19 | FTIR spectroscopic comparison of serum from lung cancer patients and healthy persons显示文摘 | Xin Wang Xiang Shen Daping Sheng | 2014 | Spectrochimica Acta2014，122，7： | 1 |
| 20 | Treatment of early stage osteonecrosis of the femoral head with autologous implantation of bone marrow-derived and cultured mesenchymal stem cells显示文摘 | Dewei Zhao Daping Cui Benjie Wang Fengde Tian Lin Guo Lei Yang Baoyi Liu Xiaobing Yu | 2011 | Bone2011，，1： | 1 |
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