Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
home > search

Now showing items 145 - 160 of 138613

  • Detection of pathogenic bacteria by magneto-immunoassays:a review

    Eugen Gheorghiu[1]  

    Magnetic particle-based immunoassays are widely used in microbiology-related assays for both microbial capture,separation,analysis,and detection.Besides facilitating sample operation,the implementation of micro-to-nanometer scale magnetic beads as a solid support potentially shortens the incubation time(for magnetic immuno capture)from several hours to less than an hour.Analytical technologies based on magnetic beads offer a rapid,effective and inexpensive way to separate and concentrate the target analytes prior to detection.Magneto-immuno separation uses magnetic particles coated with specific antibodies to capture target microorganisms,bear the corresponding antigens,and subsequently separate them from the sample matrix in a magnetic field.The method has been proven effective in separating various types of pathogenic bacteria from environmental water samples and in eliminating background interferences.Magnetic particles are often used to capture target cells(pathogenic bacteria)from samples.In most commercially available assays,the actual identification and quantitation of the captured cells is then performed by classical microbiological assays.This review highlights the most sensitive analytic methods(i.e.,long-range surface plasmon resonance and electrochemical impedance spectroscopy)to detect magnetically tagged bacteria in conjunction with magnetic actuation.
    Download Collect
  • Magnesium matrix composite reinforced by nanoparticles-A review

    K.B.Nie[1,2]   X.J.Wang   K.K.Deng   X.S.Hu   K.Wu  

    Significant progress has been made in magnesium-based composites during recent decades,especially for the appearance of magnesium matrix composite reinforced by nanoparticles.The nanoparticles added not only exhibit a good strengthening effect,but also maintain the initial toughness of the matrix,effectively balancing the contradiction between the strength and plasticity in the traditional magnesium matrix composites.The magnesium matrix nanocomposites with excellent mechanical properties have pushed the development of magnesium matrix composites to a new stage.However,it is very difficult to disperse the nanoparticles in metal melt especially in magnesium melt which is different from other metal melts and dangerous during the cast processing.This means that the preparation of magnesium matrix nanocomposite is extremely challenging.Further,the magnesium matrix nanocomposites possess a distinctive characteristic in deformation behavior,strengthening and toughening mechanism due to their special size effect of nanoparticles.Accordingly,this review will focus on the new preparation technologies,deformation behavior,mechanical properties and strengthening and toughening mechanisms.The potential applications,development trends and future research ideas of magnesium matrix nanocomposite are also prospected.©2020 Published by Elsevier B.V.on behalf of Chongqing University.
    Download Collect
  • Approximation by (p, q)-Baskakov–Beta operators

    Neha Malik   Vijay Gupta  

    Abstract In the present paper, we consider ( p, q )-analogue of the Baskakov–Beta operators and using it, we estimate some direct results on approximation. Also, we represent the convergence of these operators graphically using MATLAB.
    Download Collect
  • Response to the Letter by Stoop, P.

    Cohn, Barbara A.   La Merrill, Michele   Krigbaum, Nickilou Y.   Yeh, Gregory   Park, June-Soo   Zimmermann, Lauren   Cirillo, Piera M.  

    Download Collect
  • Contemporary Hinduism, written by P. Pratap Kumar

    Aktor   Mikael  

    Download Collect
  • Contemporary Hinduism, written by P. Pratap Kumar

    Aktor, Mikael  

    Download Collect
  • Science Fiction TV by J. P. Telotte

    Schneider, Jen  

    Download Collect
  • Colouring graph by the kernel P system

    Tazir, Khaira   Ali, Yamina Mohamed Ben  

    Download Collect
  • No True Echo by Gareth P. Jones

    Spisak, April  

    Download Collect
  • Approximation by Bivariate (p,?q)-Bernstein–Kantorovich Operators

    Acar, Tuncer   Aral, Ali   Mohiuddine, S. A.  

    Download Collect
  • Useful Review Marked by Conceptual Vagueness

    Verbaarschot, Ceci   Haselager, Pim  

    Download Collect
  • Fault isolation at P/N junction by nanoprober

    Liu, Wan-Yi   Chiang, Chih-Feng   Yen, Chia-Hsiang   Lin, Rung-Jiun   Chang, Te-Fu   Chang, Shih-Hsin   Kuo, Pau-Sheng   Chu, Chih-Hsun  

    Download Collect
  • TiO2 Band Restructuring by B and P Dopants

    Li, Lei; Meng, Fanling; Hu, Xiaoying; Qiao, Liang; Sun, Chang Q; Tian, Hongwei; Zheng, Weitao; Lisesivdin, Sefer Bora  

    An examination of the effect of B- and P-doping and codoping on the electronic structure of anatase TiO2 by performing density functional theory calculations revealed the following: (i) B- or P-doping effects are similar to atomic undercoordination effects on local bond relaxation and core electron entrapment; (ii) the locally entrapped charge adds impurity levels within the band gap that could enhance the utilization of TiO2 to absorb visible light and prolong the carrier lifetime; (iii) the core electron entrapment polarizes nonbonding electrons in the upper edges of the valence and conduction bands, which reduces not only the work function but also the band gap; and (iv) work function reduction enhances the reactivity of the carriers and band gap reduction promotes visible-light absorption. These observations may shed light on effective catalyst design and synthesis. =20
    Download Collect
  • Ancient Epistemology, by Lloyd P. Gerson

    Arola, Adam   Goldman, Michael  

    Download Collect
  • Brazil: Reversal of Fortune - by Montero, Alfred P.

    Arends-Kuenning   Mary  

    Download Collect
  • Brazil: Reversal of Fortune - by Montero, Alfred P.

    Arends-Kuenning, Mary  

    Download Collect
5 6 7 8 9 10 11 12 13 14

Contact

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

Submit Feedback