scholarly journals In situ, in-liquid, all-electrical detection of Salmonella typhimurium using lead titanate zirconate/gold-coated glass cantilevers at any dipping depth

2007 ◽  
Vol 22 (12) ◽  
pp. 3132-3138 ◽  
Author(s):  
Qing Zhu ◽  
Wan Y. Shih ◽  
Wei-Heng Shih
Keyword(s):  
Salmonella Typhimurium ◽  
Lead Titanate ◽  
Electrical Detection ◽  
Coated Glass ◽  
Lead Titanate Zirconate

scholarly journals Fate of Salmonella Typhimurium in laboratory-scale drinking water biofilms

2013 ◽  
Vol 11 (4) ◽  
pp. 629-635 ◽  
Author(s):  
L. M. Schaefer ◽  
V. S. Brözel ◽  
S. N. Venter
Keyword(s):  
Drinking Water ◽  
Green Fluorescent Protein ◽  
Health Risk ◽  
Salmonella Typhimurium ◽  
Fluorescent Protein ◽  
Laboratory Scale ◽  
Green Fluorescent ◽  
In Situ Detection

Investigations were carried out to evaluate and quantify colonization of laboratory-scale drinking water biofilms by a chromosomally green fluorescent protein (gfp)-tagged strain of Salmonella Typhimurium. Gfp encodes the green fluorescent protein and thus allows in situ detection of undisturbed cells and is ideally suited for monitoring Salmonella in biofilms. The fate and persistence of non-typhoidal Salmonella in simulated drinking water biofilms was investigated. The ability of Salmonella to form biofilms in monoculture and the fate and persistence of Salmonella in a mixed aquatic biofilm was examined. In monoculture S. Typhimurium formed loosely structured biofilms. Salmonella colonized established multi-species drinking water biofilms within 24 hours, forming micro-colonies within the biofilm. S. Typhimurium was also released at high levels from the drinking water-associated biofilm into the water passing through the system. This indicated that Salmonella could enter into, survive and grow within, and be released from a drinking water biofilm. The ability of Salmonella to survive and persist in a drinking water biofilm, and be released at high levels into the flow for recolonization elsewhere, indicates the potential for a persistent health risk to consumers once a network becomes contaminated with this bacterium.

Immuno-capture and in situ detection of Salmonella typhimurium on a novel microfluidic chip

2015 ◽  
Vol 853 ◽  
pp. 710-717 ◽  
Author(s):  
Renjie Wang ◽  
Yanan Ni ◽  
Yi Xu ◽  
Yan Jiang ◽  
Chunyan Dong ◽  
...  
Keyword(s):  
Salmonella Typhimurium ◽  
Microfluidic Chip ◽  
In Situ Detection

scholarly journals Gel Synthesis of Hexaferrites Pb1−xLaxFe12−xZnxO19 and Properties of Multiferroic Composite Ceramics PZT–Pb1−xLaxFe12−xZnxO19

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1630
Author(s):  
Inna V. Lisnevskaya ◽  
Inga A. Aleksandrova
Keyword(s):  
Coupling Coefficient ◽  
Lead Titanate ◽  
Electromechanical Coupling ◽  
Electromechanical Coupling Coefficient ◽  
Magnetic Characteristics ◽  
Composite Ceramics ◽  
Magnetic Parameters ◽  
Lead Titanate Zirconate ◽  
Multiferroic Composite ◽  
Tan Δ

We investigated the opportunities for obtaining hexaferrites Pb1−xLaxFe12−xZnxO19 (x = 0–1) from citrate–glycerin gel and showed that synthesis occurs via the formation of the Fe3O4 phase; products with a small amount of hematite impurity Fe2O3 can be obtained after firing at 800 to 900 °C with 0 ≤ x ≤ 0.5. If x > 0.5, perovskite-like LaFeO3 is formed in samples, so that if x = 0.9–1, the synthesis products virtually do not contain phases with hexaferrite structures and represent a mixture of LaFeO3, Fe2O3, and Fe3O4. Within the range of 0 ≤ x ≤ 0.5, the electrical and magnetic characteristics of hexaferrites Pb1−xLaxFe12−xZnxO19 are slightly dependent on x and have the following average values: A relative permittivity ε/ε0 ~ 45, a dielectric loss tangent tan δ ~ 0.6, an electrical resistivity R ~ 109 Ohm cm, coercivity Hc ~ 3 kOe, saturation magnetization Ms ~ 50 emu/g, and remanent magnetization Mr ~ 25 emu/g. The magnetoelectric (ME) ceramics 50 wt.% PZTNB-1 + 50 wt.% Pb1−xLaxFe12−xZnxO19 (PZTNB-1 is an industrial piezoelectric material based on lead titanate zirconate (PZT) do not contain impurity phases and have the following characteristics: Piezoelectric coefficients d33 = 10–60 and −d31 = 2–30 pC/N, piezoelectric voltage coefficients g33 = 2–13 and −g31 = 1–5 mV m/N, an electromechanical coupling coefficient Kp = 0.03–0.13, magnetic parameters Hc = 3–1 kOe, Ms = 50–30, and Mr = 25–12 emu/g. The maximum ME coupling coefficient ΔE/ΔH ~ 1.75 mV/(cm Oe) was achieved with x = 0.5.

High-Deposition-Rate Growth of Lead Titanate Zirconate Films by Reactive Electron Beam Coevaporation

1994 ◽  
Vol 33 (Part 1, No. 9B) ◽  
pp. 5291-5293 ◽  
Author(s):  
Shoichi Mochizuki ◽  
Toshiyuki Mihara ◽  
Tadashi Ishida
Keyword(s):  
Electron Beam ◽  
Deposition Rate ◽  
Lead Titanate ◽  
High Deposition Rate ◽  
Lead Titanate Zirconate
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