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Journal of Materials Science & Technology 2022年第5期100卷 246-253页

作者： J.f.zhao H.P.Wang B.Wei School of Physical Science and Technology Northwestern Polytechnical UniversityXi’an 710072China

A new intermetallic compound of thermodynamically stable Nb_(2)Ni phase is discovered within Nb-Ni binary system,refreshing the current situation that there are only three stable intermediate phases of Nb_(7)Ni_(6),NbNi_(3) and NbNi_(8).The new stable phase is generated from the peritectoid transition:(Nb)+Nb_(7)Ni_(6)→Nb_(2)Ni,and the transformation temperature is 1533 *** refreshes the current equilibrium Nb-Ni binary phase *** is confirmed by transmission electron microscopy and the annealing experiments,which is determined to be the fCC structure(Pearson:cf96,space grope:fd-3m O2,a=11.888A).furthermore,the equilibrium properties of Nb_(2)Ni phase are produced by density functional theory,including the formation energy,cohesive energy,bulk modulus and lattice constant.

关键词： Intermetallic compound Peritectoid transition Transmission electron microscopy Density functional theory Nb alloy

NUMERICAL SIMULATION Of A TWO-DIMENSIONAL SQUARE MOVING NEAR fREE SURfACE

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Journal of Hydrodynamics 2001年第1期13卷 54-57页

作者： Hong, f.W. zhao, f. Zhou, L.D. China Ship Sci. Res. Cent. P. O. Box 116 Wuxi 214082 China

A body moving near the free surface is a focus in fluid dynamic research. Many numerical methods were developed for the simulation of the induced flow field. In this paper, a two-dimensional square moving near the free surface was simulated by the volume of fluid method (VOf). The flow field and drag exerted on the square were studied. The drag would increase due to the presence of the free surface. The iteration factor of the pressure interpolation of surface cells was modified, and through this modification the iteration became more stable. The capability of dealing with the large deformation of the free surface was raised.

关键词： Computational fluid dynamics Computer simulation Drag Numerical methods

Adaptive filtering algorithm to GPS/INS integrated system

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Adaptive filtering algorithm to GPS/INS integrated system

Analytical solutions of uniform extended dislocations and tractions over a circular area in anisotropic magnetoelectroelastic bimaterials

International Conference on Info-Tech and Info-Net (ICII 2001)

作者： feng, WJ Yang, SZ zhao, f Chongqing Univ Inst Commun Chongqing 400044 Peoples R China

ISBN: (纸本)7900081585

GPS/INS integrated systems have applications in the self-positioning of the high dynamic targets. This paper conceives state equations and observation equations by the integrated system and GPS observation, respectively. An adaptive filtering algorithm is introduced which estimates observation noise covariance with observation data, and estimates dynamic noise covariance by use of Sage-Husa filtering algorithm which has faster convergent speed and better stability than the conventional Kalman filtering algorithm At last, simulations are given to verify the effectiveness of the algorithm.

关键词： GPS/INS integrated adaptive filtering Kalman filtering

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Acta Mechanica Sinica 2013年第1期29卷 73-84页

作者： Y.-f. zhao X.-C. Shang E. Pan Dept. of Civil Engineering University of Akron Dept. of Applied Mechanics University of Science and Technology

In this paper, we derive the analytical solutions in a three-dimensional anisotropic magnetoelectroelastic bimaterial space subject to uniform extended dislocations and tractions within a horizontal circular area. By virtue of the Stroh formalism and fourier transformation, the final expression of solutions in the physical domain contains only line integrals over [0, 2π] rather than infinite integrals. As the reduced cases, the half-space and homogeneous full-space solutions can be directly derived from the present solutions. Also, in terms of material domains, the present solutions can be reduced to the piezoelectric, piezomagnetic, purely elastic materials with different symmetries of material prop- erty. To carry out numerical calculations, Gauss quadrature is adopted. In the numerical examples, the effect of different loading locations on the response at the interface is analyzed. It is shown that, when the magnetic traction or electric dislocation is applied, the physical quantities on the interface may not decrease monotonically as the loading area moves away from the interface. The distributions of different in-plane physical quantities on the upper and lower interfaces under various extended horizontal loadings are compared and the differences are discussed. The work presented in this paper can serve as benchmarks for future numerical studies in related research fields.

关键词： Anisotropic bimaterial space. Magnetoelectroe- lastic Extended dislocations Extended tractions Circular loading Analytic solutions

A Low-cost and High Efficiency Architecture of AES Crypto-engine

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China Communications 2008年第2期5卷 8-15页

作者： Z.f.zhao D.Y.Yu L.Li Vinno Technologies Inc

The growing market of WPAN has led to an increasingdemand of security measures and devices forprotecting the user data transmitted over the *** Encryption Standards(AES)isthe basic security approach for *** meet thelow cost,low power feature and high security demandof WPAN,a low cost,high efficient AES coreis proposed in this *** achieve low cost,methods of integration and resource sharing are usedin designing a very low-complexity architecture,especially in(inverse)byte substitution(inv)SubBytes)modules and(inverse)mix column(inv)MixColumn)modules,*** more,AESEncryptor and Decryptor is integrated into a fullfunctional *** very low-cost andhigh efficiency AES core of IEEE 802.15.4-2006 isdesigned and emulated on Xilinx *** show that this kind of design can be used inresource critical applications,such as smart card,PDA and mobile phones.

关键词： AES S-box Sub-Byte WPAN

Analysis of Cold flowfield of Multi-Annular Opposed Jets

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Journal of Thermal Science 1992年第2期1卷 135-139页

作者： H.f.zhao G.C.Benelli InstituteofEngineeringThermophysics ChineseAcademyofSciencesBeijing100080China ENEL－CRTN，ViaA.Pis

The technique of the use of multi-annular opposed jets as different from using swirl and bluff body creates an excellent recirculation zone with desired size in a large *** size of recirculation,the magnitude of reverse velocity and turbulence intensity are much greater than those formed by bluff *** affecting the flowfield include the velocity ratio of the opposed jets to the primary air J,the diameter and construction of the opposed jet ring,secondary air velocity and configuration,and confined or unconfined flow condition and so *** method is a promising way for flame stabilization in combustion technology.

关键词： multi-annular opposed jets cold flowfield

抑制P21活化激酶1通过减少Bad的磷酸化促进血管平滑肌细胞凋亡

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中华高血压杂志(中英文) 2024年第9期 900-900页

作者： Jiao L Yi W Chang YR Cheng WL Cao JL Chao SP zhao f Lu Z 刘青

p21活化激酶1（P21-activated kinase 1,Pak1）对细胞凋亡有影响，近期有报道称其在多种心血管疾病中发挥重要作用，而血管平滑肌细胞（vascular smooth muscle cell,VSMC）凋亡是其中的关键过程。因此，研究者推测Pak1可能是调节VSMC...

p21活化激酶1（P21-activated kinase 1,Pak1）对细胞凋亡有影响，近期有报道称其在多种心血管疾病中发挥重要作用，而血管平滑肌细胞（vascular smooth muscle cell,VSMC）凋亡是其中的关键过程。因此，研究者推测Pak1可能是调节VSMC行为的一个新靶点。方法与结果：在该研究中，研究者发现，在给予H2O2后，VSMC中Pak1的表达显著上调，且依赖于刺激时间。

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Two types of the crust-mantle interaction in continental subduction zones

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Science China Earth Sciences 2015年第7期58卷 1269-1283页

作者： zhao Zifu DAI LiQun ZHENG Yongfei CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China

Plate subduction is an important mechanism for exchanging the mass and energy between the mantle and the crust,and the igneous rocks in subduction zones are the important carriers for studying the recycling of crustal materials and the crust-mantle *** study presents a review of geochronology and geochemistry for postcollisional mafic igneous rocks from the Hong’an-Dabie-Sulu orogens and the southeastern edge of the North China *** available results indicate two types of the crust-mantle interaction in the continental subduction zone,which are represented by two types of mafic igneous rocks with distinct geochemical *** first type of rocks exhibit arc-like trace element distribution patterns(*** of LILE,LREE and Pb,but depletion of HfSE)and enriched radiogenic Sr-Nd isotope compositions,whereas the second type of rocks show OIB-like trace element distribution patterns(*** of LILE and LREE,but no depletion of HfSE)and depleted radiogenic Sr-Nd isotope *** of them have variable zircon O isotope compositions,which are different from those of the normal mantle zircon,and contain residual crustal *** geochemical features indicate that the two types of mafic igneous rocks were originated from the different natures of mantle *** mantle source for the second type of rocks would be generated by reaction of the overlying juvenile lithospheric mantle with felsic melts originated from previously subducted oceanic crust,whereas the mantle source for the first type of rocks would be generated by reaction of the overlying ancient lithospheric mantle of the North China Block with felsic melts from subsequently subducted continental crust of the South China ***,there exist two types of the crust-mantle interaction in the continental subduction zone,and the postcollisional mafic igneous rocks provide petrological and geochemical records of the slab-mantle interactions in continental coll

关键词： geochemistry postcollisional mafic igneous rocks crust-mantle interaction continental subduction zone

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New evidence for the epigenetic regulation of skeletal stem cells

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Science Bulletin 2024年第13期69卷 2004-2006页

作者： Liming zhao Jun Xiao Charles K.f.Chan Institute for Stem Cell Biology and Regenerative Medicine Stanford University School of MedicineStanford CA 94305USA Department of Surgery Division of Plastic and Reconstructive SurgeryStanford University School of MedicineStanford CA 94305USA Department of Orthopaedic Surgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Skeletal stem cells(SSCs)are crucial for skeletal development and regeneration,yet the epigenetic regulation of these cells remains poorly *** studies have delineated the epigenetic landscape across the developmental trajectory of SSCs,highlighting the involvement of Ptip in regulating SSC *** skeletal system undergoes dynamic remodeling throughout *** stem cells(SSCs),residing within the skeleton and lineage-restricted,serve as a cellular reserve to foster development and maintain skeletal *** categorized within the broader mesenchymal stromal/stem cells(MSCs).

关键词： skeletal involvement maintain

CORROSION BEHAVIOR Of Cu-Nb AND Ni-Nb AMORPHOUS fILMS PREPARED BY ION BEAM ASSISTED DEPOSITION

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 266-270页

作者： B. zhao, f. Zeng, DM. Li and f. PanLaboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China Laboratory of Advanced Materials Department of Materials Science and Engineering Tsinghua Univexsity

The Cu25 Nb75 and Ni45Nb55 amorphous films with about 500nm thickness were prepared by ion beam assisted deposition (IBAD). Potentiodynamic polarization measurement was adopted to investigate the corrosion resistance of samples and the tests were carried out respectively in 1mol/L H2SO4 and NaOH aquatic solution. The corrosion performance of the amorphous films was compared with that of multilayered and pure Nb films. Experimental results indicated that the corrosion resistance of amorphous films was better than that of the corresponding multilayers and pure Nb films for both Ni-Nb system with negative heat of formation and Cu-Nb system with positive heat of formation.

关键词： amorphous film ion beam assisted deposition corrosion resis- tance polarization measurement