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1Effects of mowing and nitrogen addition on soil respiration in three patches in an oldfield grassland in Inner Mongolia显示文摘Aims Vegetation type is important in determining variations in soil carbon(C)efflux under grassland managements.This study was conducted to examine the effects of mowing and nitrogen(N)addition on soil respiration and their dependences upon vegetation types in an oldfield grassland of northern China.Methods Soil respiration,temperature,moisture and aboveground net primary productivity(ANPP)and belowground net primary productivity(BNPP)were examined in response to mowing and N addition among the three patches dominated by different species(named as grass,forb and mixed patches,respectively)in the growing seasons(May–October)from 2006 to 2008.Important Findings Across the 3 years,soil respiration in the grass patch was greater than those in the forb and mixed patches,which could have been ascribed to the higher soil moisture(SM)in the grass patch.Mowing had no impact on soil respiration due to unaltered SM and plant growth.Soil respiration was stimulated by 6.53%under N addition,and the enhancement was statistically significant in 2006 but not in 2007 or 2008 because of the limited water availability in the later 2 years.There were no interactive effects between mowing and N addition on soil respiration.Soil respiration showed positive dependence upon SM,ANPP and BNPP across plots.The results suggest that soil water availability and plant growth could be the primary factors in controlling the temporal and spatial variations in soil respiration and its response to different treatments.Our observations indicate that grassland managements(i.e.mowing for hay once a year)may have little influence on soil respiration of the oldfield grassland in northern China.Yi Han Zhe Zhang Changhui Wang Fenghe Jiang Jianyang Xia 2012Journal of Plant Ecology2012,5,2:14
2Deformation Compensation of Ram Components of Super-heavy-duty CNC Floor Type Boring and Milling Machine显示文摘Ram is a very important component of super-heavy-duty computer numerical control (CNC) floor type boring-milling machine, and deformation of ram is a significant source causing errors in machining process. To compensate the deformation error of super-heavy-duty CNC floor type boring-milling machine, based on force analysis theory, the law and compensation measures of deformation of ram are researched. Based on the principle of torque (force) balance of the ram components, the formulas of compensation forces and compensation torques are derived, the relations between compensation forces (compensation torques) and the stroke distance of the ram are given. According to theoretical analysis results and the structural characteristics of super-heavy-duty CNC floor type boring and milling machine of TK6932, rods compensation, hydrostatic pressure compensation and wire rope compensation measures are taken to compensate the deformation error of ram. The experiments and computer simulation results show that the straightness of the ram at its overhanging end meets the national machinery industry standards.WU Fenghe QIAO Lijun XU Yaoling 2012Chinese Journal of Aeronautics2012,25,2:9
3Lattice-based linearly homomorphic signature scheme over binary field显示文摘To design an efcient post-quantum linearly homomorphic signature scheme,using the pre-image sampling function,a lattice-based linearly homomorphic signature scheme over a binary feld is proposed in this paper.Linear homomorphism is achieved through the homomorphism of the lattice-based hash function used in the proposed signature scheme.It is shown that the proposed scheme satisfes the privacy property.Based on the hardness of the short integer solution problem,the proposed scheme is unforgeable against the type 1 and type 2adversaries in the random oracle model.Moreover,compared with a presented linearly homomorphic signature scheme in 2011,the proposed scheme has some advantages with respect to the public key size,signature length and computational cost.WANG FengHe HU YuPu WANG BaoCang 2013Science China(Information Sciences)2013,56,11:9
4Demonstration of an on-chip TE-pass polarizer using a silicon hybrid plasmonic grating显示文摘An on-chip, high extinction ratio transverse electric(TE)-pass polarizer using a silicon hybrid plasmonic grating is proposed and experimentally demonstrated. Utilizing plasmonics to manipulate the effective index and mode distribution, the transverse magnetic mode is reflected and absorbed, while the TE mode passes through with relatively low propagation loss. For a 6-μm-long device, the measurement result shows that the extinction ratio in the wavelength range of 1.52 to 1.58 μm varies from 24 to 33.7 dB and the insertion loss is 2.8–4.9 dB. Moreover,the structure exhibits large alignment tolerance and is compatible with silicon-on-insulator fabrication technology.BOWEN BAI FENGHE YANG ZHIPING ZHOU 2019Photonics Research2019,7,3:4
5Single-drive high-speed lumped depletion-type modulators toward 10 fJ/bit energy consumption显示文摘Reduction of modulator energy consumption to 10 fJ∕bit is essential for the sustainable development of communication systems.Lumped modulators might be a viable solution if instructed by a complete theory system.Here,we present a complete analytical electro-optic response theory,energy consumption analysis,and eye diagrams on absolute scales for lumped modulators.Consequently the speed limitation is understood and alleviated by single-drive configuration,and comprehensive knowledge into the energy dependence on structural parameters significantly reduces energy consumption.The results show that silicon modulation energy as low as 80.8 and 21.5 fJ∕bit can be achieved at 28 Gbd under 50 and 10 Ω impedance drivers,respectively.A 50 Gbd modulation is also shown to be possible.The analytical models can be extended to lumped modulators on other material platforms and offer a promising solution to the current challenges of modulation energy reduction.XINBAI LI FENGHE YANG FANG ZHONG QINGZHONG DENG JURGEN MICHEL ZHIPING ZHOU 2017Photonics Research2017,5,2:4
6In vitro immunomodulation of magnesium on monocytic cell toward anti-inflammatory macrophages显示文摘Biodegradable magnesium(Mg)has shown great potential advantages over current bone fixation devices and vascular scaffold technologies;however,there are few reports on the immunomodulation of corrosive Mg products,the micron-sized Mg particles(MgMPs).Human monocytic leukemia cell line THP-1 was set as the in vitro cell model to estimate the immunomodulation of MgMPs on cell proliferation,apoptosis,polarization and inflammatory reaction.Our results indicated highconcentration of Mg^2+ demoted the proliferation of the THP-1 cells and,especially,THP-1-derived macrophages,which was a potential factor that could affect cell function,but meanwhile,cell apoptosis was almost not affected by Mg^2+.In particular,the inflammation regulatory effects of MgMPs were investigated.Macrophages exposed to Mg^2+ exhibited down-regulated expressions of M1 subtype markers and secretions of pro-inflammatory cytokines,up-regulated expression of M2 subtype marker and secretion of anti-inflammatory cytokine.These results indicated Mg^2+ could convert macrophages from M0 to M2 phenotype,and the bioeffects of MgMPs on human inflammatory cells were most likely due to the Mg^2+-induced NF-jB activation reduction.Together,our results proved Mg^2+ could be used as a new anti-inflammatory agent to suppress inflammation in clinical applications,which may provide new ideas for studying the immunomodulation of Mg-based implants on human immune system.Lei Sun Xiaoyu Li Menghan Xu Fenghe Yang Wei Wang Xufeng Niu 2020Regenerative Biomaterials2020,7,4:3
7Effects of p75 neurotrophin receptor knockout on axonal regeneration in a mouse model of facial nerve injury显示文摘BACKGROUND:Previous studies have shown that p75 neurotrophin receptor plays an important role in peripheral nerve injury.However,the role of p75 neurotrophin receptor in the regeneration of peripheral nerves remains poorly understood. OBJECTIVE:To study the effect of p75 neurotrophin receptor on facial nerve regeneration. DESIGN,TIME AND SETTING:A randomized controlled experiment was performed in the Regeneration Laboratory of Flinders University,Australia and the Biomedical Laboratory of Dentistry School,Shandong University from March 2005 to February 2006. MATERIALS:Cholera toxin B subunit,fast blue,and biotin rabbit-anti goat IgG were provided by Sigma,USA;goat-anti choleratoxin B subunit antibody was provided by List Biologicals,USA. METHODS:In p75 neurotrophin receptor knockout and wild type 129/sv mice,the facial nerves on one side were crushed.At days 2 and 4 following injury,regenerating motor neurons in the facial nuclei were labeled by fast blue,and the regenerating axon was labeled by the anterograde tracer choleratoxin B subunit. MAIN OUTCOME MEASURES:Axonal regenerative velocity and number were detected by immunohistochemical staining of choleratoxin B subunit,growth-associated protein,protein gene product 9.5,and calcitonin-gene-related peptide;survival of motor neurons in the facial nuclei was detected by retrograde fast blue. RESULTS:Axonal growth in the facial nerve of p75 neurotrophin receptor knockout mice was significantly less than in wild type mice.At day 7 after injury,the number of regenerating motor neurons in p75 neurotrophin receptor knockout mice remained significantly less than in wild type mice(P<0.05).The number of positively stained fibers for growth-associated protein-43,protein gene product 9.5,and calcitonin-gene-related peptide in p75 neurotrophin receptor knockout mice was significantly less than in wild type mice(P<0.01). CONCLUSION:p75 neurotrophin receptor promoted axonal regeneration and enhanced the survival rate of motor neurons following facial nerve injury.Fenghe Zhang Ping Huang Pishan Yang Xue Zhang 2009Neural Regeneration Research2009,4,8:3
8Hybrid-integrated high-performance microwave photonic filter with switchable response显示文摘The integrated microwave photonic filter(MPF),as a compelling candidate for next-generation radio-frequency(RF)applications,has been widely investigated for decades.However,most integrated MPFs reported thus far have merely incorporated passive photonic components onto a chip-scale platform,while all necessary active devices are still bulk and discrete.Though few attempts to higher photonic integration of MPFs have been executed,the achieved filtering performances are fairly limited,which impedes the pathway to practical deployments.Here,we demonstrate,for the first time to our knowledge,an all-integrated MPF combined with high filtering performances,through hybrid integration of an In P chip-based laser and a monolithic silicon photonic circuit consisting of a dual-drive Mach–Zehnder modulator,a high-Q ring resonator,and a photodetector.This integrated MPF exhibits a high spectral resolution as narrow as 360 MHz,a wide-frequency tunable range covering the S-band to K-band(3 to 25 GHz),and a large rejection ratio of>40 d B.Moreover,the filtering response can be agilely switched between the bandpass and band-stop function with a transient respond time(48μs).Compared with previous MPFs in a similar integration level,the obtained spectral resolution in this work is dramatically improved by nearly one order of magnitude,while the valid frequency tunable range is broadened more than twice,which can satisfy the essential filtering requirements in actual RF systems.As a paradigm demonstration oriented to real-world scenarios,high-resolution RF filtering of realistic microwave signals aiming for interference rejection and channel selection is performed.Our work points out a feasible route to a miniaturized,high-performance,and cost-effective MPF leveraging hybrid integration approach,thus enabling a range of RF applications from wireless communication to radar toward the higher-frequency region,more compact size,and lower power consumption.YUANSHENG TAO HAOWEN SHU XINGJUN WANG MING JIN ZIHAN TAO FENGHE YANG JINGBO SHI JUN QIN 2021Photonics Research2021,9,8:2
9On cross-correlation indicators of an S-box显示文摘替换盒子(S 盒子) 经常在许多对称的加密算法被用作最重要的非线性的部件。S 盒子的密码的性质直接影响整个零系统的安全。最近,概括了全球雪崩特征(GGAC ) 被介绍测量在二任意的布尔功能之间的关联。在这份报纸,更好评估 S 盒子的安全,我们在场为它的二跨关联的指示物。另外,由学习相关性质在二平衡布尔功能之间跨关联,我们为 S 盒子为二平衡功能并且也在与 GGAC 有关的 sum-of-squares 指示物上建议更低的界限。Sheng GAO Wenping MA Zepeng ZHUO Fenghe WANG 2011Frontiers of Computer Science2011,5,4:2
10Commercial Production of Tiger Puffer(Takifugu rubripes)in Winter Using a Recirculating Aquaculture System显示文摘Tiger puffer(Takifugu rubripes) is a promising species for aquaculture production because of its high value and limited supply. However, in the north of China, using sea cages to culture this species in winter is hampered by the fact that the seawater temperature is extremely low. Here, a large scale commercial production of tiger puffer has been successfully realized using a recirculating aquaculture system(RAS) from 3 October 2012 to 31 May 2013. The RAS was comprised of nine culture tanks(total water volume 200 m3) and stocked with approximately a total of 14400 fish(initial mean weight 160 g). The tiger puffer was hand-fed at a rate of 0.7% of total body weight per day, and the feed conversion rate was(1.21 ± 0.3) kg kg-1. The recycle water in RAS was treated by a sieve bend screen, a foam fractionator, a submerged biofilter, an UV sterilizer and a submersible aerator. During the whole culture period, an excellent water quality control was achieved in RAS. At the end of this experiment, the survival rate of tiger puffer was more than 98%. The final tank densities averaged 31.2 kg m-3, and the final individual mean weight was 440 g.LIN Zhongling WANG Hua YU Chunyan LV Fenghe LIU Hengming ZHANG Tao 2017Journal of Ocean University of China2017,16,1:2
11Simulation of Heat and Mass Transfer in a Grain Pile on the Basis of a 2D Irregular Pore Network显示文摘The so-called pore network model has great advantages in describing the process of heat and mass transfer in porous media.In order to construct a random two-dimensional(2D)irregular pore network model for an unconsolidated material,image processing technology was used to extract the required topological and geometric information from a 2D sample of soybean particles,and a dedicated algorithm was elaborated to merge some adjacent small pores.Based on the extracted information,a 2D pore network model including particle information was reconstructed and verified to reflect the pore structure of discrete particles.This method was used to reconstruct a random 2D irregular pore network model of wheat.Accordingly,a multi-scale heat and mass transfer model was implemented to simulate the drying of wheat.The simulation results were consistent with the experimental results,which indicates that the reconstructed irregular pore network model can effectively simulate the real pore structure inside unconsolidated porous media.The present approach may be regarded as the foundation for establishing in the future a three-dimensional pore network model and studying the heat and mass transfer process in a grain pile.Pengxiao Chen Kai Huang Fenghe Wang Weijun Xie Shuo Wei Deyong Yang 2019Fluid Dynamics & Materials Processing2019,15,4:2
12Some new development of eddycurrent testing显示文摘You Fenghe 2001NDT of China2001,23,2:1
13Caveolin-lprotects against sepsis by modulating inflammatory response,alleviating bacterial burden,and suppressing thymocyte apoptosis显示文摘FengH GuoL SongZ 0,,33:1
14EfficiencyofknownresistancegenesandresistanceofvarietiesofhybridricetoblastdiseaseinSichuanprovince(水稻抗稻瘟病基因和杂交稻品种在四川的抗性评价)显示文摘ZHANGXM(张雪梅) FENGH(冯慧) BAIYL(白玉莲) etal 2012SouthwestChinaJournalofAgriculturalSciences2012,25,4:1
15Sequential separation of Cu(Ⅱ)/Ni(Ⅱ)/Fe(Ⅱ)from strong-acidic pickling wastewater with a two-stage process based on a bi-pyridine chelating resin显示文摘A self-synthesized bi-pyridine chelating resin(PAPY)could separate Cu(Ⅱ)/Ni(Ⅱ)/Fe(Ⅱ)sequentially from strong-acidic pickling wastewater by a two-stage p H-adjusted process,in which Cu(Ⅱ),Ni(Ⅱ),and Fe(Ⅱ)were successively preferred by PAPY.In the first stage(p H 1.0),the separation factor of Cu(Ⅱ)over Ni(Ⅱ)reached 61.43 in Cu(Ⅱ)-Ni(Ⅱ)-Fe(Ⅱ)systems.In the second stage(p H 2.0),the separation factor of Ni(Ⅱ)over Fe(Ⅱ)reached 92.82 in Ni(Ⅱ)-Fe(Ⅱ)systems.Emphasis was placed on the selective separation of Cu(Ⅱ)and Ni(Ⅱ)in the first-stage.The adsorption amounts of Cu(Ⅱ)onto PAPY were 1.2 mmol/g in the first stage,while those of Ni(Ⅱ)and Fe(Ⅱ)were lower than 0.3 mmol/g.Cu(Ⅱ)adsorption was hardly affected by Ni(Ⅱ)with the presence of dense Fe(Ⅱ),but Cu(Ⅱ)inhibited Ni(Ⅱ)adsorption strongly.Part of preloaded Ni(Ⅱ)could be replaced by Cu(Ⅱ)based on the replacement effect.Compared with the absence of Fe(Ⅱ),dense Fe(Ⅱ)could obviously enhance the separation of Cu(Ⅱ)-Ni(Ⅱ).More than 95.0%of Cu(Ⅱ)could be removed in the former 240 BV(BV for bed volume of the adsorbent)in the fixed-bed adsorption column process with the flow rate of 2.5 BV/h.As proved by X-ray photoelectron spectrometry(XPS)and density functional theory(DFT)analyses,Cu(Ⅱ)exerted a much stronger deprotonation and chelation ability toward PAPY than Ni(Ⅱ)and Fe(Ⅱ).Thus,the work shows a great potential in the separation and purification of heavy metal resources from strong-acidic pickling wastewaters.Yingzhi Lv Lidan Zong Zicheng Liu Jianwei Du Fenghe Wang Yanhong Zhang Chen Ling Fuqiang Liu 2021Chinese Chemical Letters2021,32,9:1
16A copper-deficiency-induced root reductase is different from the iron-deficiency-induced one in red clover显示文摘SHAO JIANZHENG YUN FENGHE YUSUKE ARAKAWA 2005Plant and Soil2005,273,12:1
17Receptor Interacting Protein Kinase-3 Determines Cellular Necrotic Response to TNF-α显示文摘Sudan He Lai Wang Lin Miao Tao Wang Fenghe Du Liping Zhao Xiaodong Wang 2009Cell2009,,6:1
18Artesunatedown-regulatesimmuno-suppressionfromcolorectalcancerColon26andRKOcellsinvitrobydecreasingtransforminggrowthfactorβ1andinterleukin-10显示文摘CuiC FengH ShiX etal 2015IntImmunopharmacol2015,27,1:1
19Single image based reverse engineering method显示文摘Wu Fenghe Sun Lei 0,,1:1
20Topology Optimization with Aperiodic Load Fatigue Constraints Based on Bidirectional Evolutionary Structural Optimization显示文摘Because of descriptive nonlinearity and computational inefficiency,topology optimization with fatigue life under aperiodic loads has developed slowly.A fatigue constraint topology optimization method based on bidirectional evolutionary structural optimization(BESO)under an aperiodic load is proposed in this paper.In viewof the severe nonlinearity of fatigue damagewith respect to design variables,effective stress cycles are extracted through transient dynamic analysis.Based on the Miner cumulative damage theory and life requirements,a fatigue constraint is first quantified and then transformed into a stress problem.Then,a normalized termination criterion is proposed by approximatemaximum stress measured by global stress using a P-normaggregation function.Finally,optimization examples show that the proposed algorithm can not only meet the requirements of fatigue life but also obtain a reasonable configuration.Yongxin Li Guoyun Zhou Tao Chang Liming Yang Fenghe Wu 2022Computer Modeling in Engineering & Sciences2022,,1:1
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