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Trans. Nonferrous Met. Soc. China 30(2020) 3333-3346 Preparation of NaYF4:Yb3+,Tm3+@NaGdF4:Ce3+,Eu3+ double-jacket microtubes for dual-mode fluorescent anti-counterfeiting Yin CHEN1, Shao-wen XIE1... luminescent inks for creating highly secured and fluorescent-based anti-counterfeiting patterns via inkjet printing. Key words: lanthanide-doped fluoride; core-shell structure; dual-mode luminescence......
and Cr3 C2 + NiCr coatings''.Through depositing the coating on the surface of boiler overheater tubes and on the surface of baffle- wall of carrying- coal grain blower to test its anti- erosion......
called SW U M which is without tail rotor. We adopt " stator wing" as an anti- torque compensation mechanism instead of a tail rotor.First,the attitude control test around yaw axis was performed using......
; 文献标志码:A 文章编号:1672-7207(2010)06-2264-05 An improved e-commerce anti-counterfeiting technique based on RFID ZENG Wen-fei1, 2, WU Yan-peng1...) Abstract: Due to the counterfeiting of commercial field, the initialization of the reader/writer and the tag verification were designed and a new safe anti-counterfeiting scheme was presented......
sintering. The XRD analyses show that the phase of the outer-layer coating is composed of SiO2 and mullite, and the inner-layer coating is mainly composed of β-SiC. The anti-oxidation behavior of the coating and the Rockwell hardness (HRB) of the coating after oxidation were investigated. The oxidation test shows that the as-prepared multi-layer coating exhibits excellent anti- oxidation and thermal......
J. Cent. South Univ. (2012) 19: 1219-1225 DOI: 10.1007/s11771-012-1132-0 Crystal structures and theoretical investigation of anti-/syn-2,4-diphenylpentane- and 2,4-di-p-tolylpentane-2,4-diols JIAO... and compared with the crystal structures of anti- and syn-2,4-diphenylpentane-2,4-diols (1a and 1b). X-ray diffraction indicates that inter and intra-molecular hydrogen bonds are formed in the crystal......
and the temperature changing and creep plastic deformation mechanisms were summarized. The effective ways of raising Sn-3.5Ag-2Bi lead-free solder anti- creep property was also discussed. The results show......
counterfeiting inks while more joyful applications are luminous balls, wrapping papers and adhesive tapes. Not only bulk materials, but micro-and nanoparticles feature mechanoluminescent properties......
counterfeiting inks while more joyful applications are luminous balls, wrapping papers and adhesive tapes. Not only bulk materials, but micro-and nanoparticles feature mechanoluminescent properties......
, ZHANG Feng-yang, JIA Hong-hui. Experiment of anti- counterfeiting banknote based on anti-stokes effect of infrared laser[J]. Laser & Optoelectronics Progress, 2012, 49(11): 111401. [3] YANG Jian-ping......