scholarly journals Optimization of Aflatoxin B1 Aptasensing

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Marzieh Jafari ◽  
Mohsen Rezaei ◽  
Heibatullah Kalantari ◽  
Maryam Tabarzad ◽  
Bahram Daraei
Keyword(s):  
Horseradish Peroxidase ◽  
Binding Affinity ◽  
Aflatoxin B1 ◽  
Low Cost ◽  
Term Stability ◽  
Long Term Stability ◽  
Conventional Methods ◽  
User Friendly ◽  
Hrp Horseradish Peroxidase

Combination of aptamers with DNAzymes attracted intense attention for development of DNA-based biosensors for detection of mycotoxins. In the present study a combination of aflatoxin B1 specific aptamer and HRP- (horseradish peroxidase-) mimicking DNAzyme was optimized for detecting aflatoxin B1. Detecting approach is based on the binding affinity of aflatoxin B1 to its specific aptamer and conversion of substrate to a detectable colorimetric signal by a linked DNAzyme. Compared to conventional methods for aflatoxin B1 detection, DNA-based assay has the advantages of low cost, long-term stability, and rapid, simple, and user-friendly steps.

scholarly journals Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dingwang Huang ◽  
Lintao Li ◽  
Kang Wang ◽  
Yan Li ◽  
Kuang Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Low Cost ◽  
Solar Hydrogen ◽  
Onset Potential ◽  
Term Stability ◽  
Long Term Stability ◽  
Solar Water Splitting ◽  
Current Densities

AbstractA highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that the Cu3BiS3 film-based photocathode meets the abovementioned requirements. The Cu3BiS3-based photocathode presents a remarkable onset potential over 0.9 VRHE with excellent photoelectrochemical current densities (~7 mA/cm2 under 0 VRHE) and appreciable 10-hour long-term stability in neutral water solutions. This high onset potential of the Cu3BiS3-based photocathode directly results in a good unbiased operating photocurrent of ~1.6 mA/cm2 assisted by the BiVO4 photoanode. A tandem device of Cu3BiS3-BiVO4 with an unbiased solar-to-hydrogen conversion efficiency of 2.04% is presented. This tandem device also presents high stability over 20 hours. Ultimately, a 5 × 5 cm2 large Cu3BiS3-BiVO4 tandem device module is fabricated for standalone overall solar water splitting with a long-term stability of 60 hours.

Low-cost and compact fiber-optic gyroscope with long-term stability

2011 ◽  
Author(s):  
Behzad Moslehi ◽  
Ram Yahalom ◽  
Levy Oblea ◽  
Ferey Faridian ◽  
Richard J. Black ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Low Cost ◽  
Fiber Optic Gyroscope ◽  
Term Stability ◽  
Long Term Stability

Carbon-sandwiched perovskite solar cell

2018 ◽  
Vol 6 (4) ◽  
pp. 1382-1389 ◽  
Author(s):  
Namyoung Ahn ◽  
Il Jeon ◽  
Jungjin Yoon ◽  
Esko I. Kauppinen ◽  
Yutaka Matsuo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Term Stability ◽  
Long Term Stability

Carbon-sandwiched perovskite solar cells have long-term stability and are low cost.

The performance and long-term stability of low-cost separators in single-chamber bottle-type microbial fuel cells

2017 ◽  
Vol 39 (3) ◽  
pp. 288-297 ◽  
Author(s):  
Sanath Kondaveeti ◽  
Ramesh Kakarla ◽  
Hong Suck Kim ◽  
Byung-goon Kim ◽  
Booki Min
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Low Cost ◽  
Single Chamber ◽  
Term Stability ◽  
Long Term Stability

scholarly journals Review of the Techniques to Measure the Hermeticity of Glass Frit Encapsulated Solar Cells

2021 ◽  
Vol 7 (3) ◽  
pp. 80-92
Author(s):  
Jorge Martins ◽  
Dzmitry Ivanou ◽  
Adélio Mendes
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Glass Frit ◽  
Test Procedures ◽  
Term Stability ◽  
Long Term Stability ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Emerging 3rd generation photovoltaic technologies such as perovskite and dye-sensitized solar cells are very attractive for commercialization mainly due to their low-cost materials and fabrication processes. The main drawback of these devices is their poor long-term stability. To increase the long-term stability of these devices, a hermetic encapsulation is required. The hermeticity of encapsulated devices are measured and characterized using hermeticity tests according to standard test procedures. A review of the several techniques to measure the hermeticity is presented, addressing the test methods, limitations and applicability to perovskite and dye-sensitized solar cells glass frit encapsulated devices.

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