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“Ready-to-Use” Hollow Nanofiber Membrane-Based Glucose Testing Strips

21-10-2014 | Xiaoyuan Ji; Zhiguo Su; Ping Wang; Guanghui Ma; Songping Zhang, Analyst, 2014

A novel “ready-to-use” glucose test strip based on polyurethane hollow nanofibers membrane was fabricated through facile co-axial electrospinning. By involving glucose oxidase and horseradish peroxidase in the core-phase solution, and chromogenic agent either in core-solution (in case of ...

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Effect of fiber size on structural and tensile properties of electrospun polyvinylidene fluoride fibers

18-10-2014 | Avinash Baji, Yiu‐Wing Mai, Shing‐Chung Wong, Polymer Engineering and Science, 2014

We use electrospinning to obtain polyvinylidene fluoride (PVDF) fibers and demonstrate simultaneous improvements in β‐crystal microstructure and in tensile properties of fibers with reduction of their diameter. PVDF fibers with average diameters ranging from 70 to 400 nm are obtained by ...

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Processing oxidic waste of lead‐acid batteries in order to recover lead

17-10-2014 | Traian Buzatu, Mircea Ionut Petrescu, Valeriu Gabriel Ghica, Mihai Buzatu, Gheorghe Iacob, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT The main process parameters have been investigated with a relatively new method for lead recovery from oxidic paste. The method consisting in leaching with NaOH and is also useful for processing other secondary resources (volatile dusts resulted from metallurgical extraction of lead ...

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Analysis of the transformation behaviors of a Chinese coal ash using in‐/ex‐situ XRD and SEM‐EXD

17-10-2014 | Xiongchao Lin, Caihong Wang, Jin Miyawaki, Yonggang Wang, Seongho Yoon, Isao Mochida, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT Crystal and phase transitions of a Chinese Datong coal ash were evaluated using room temperature X‐ray diffraction (RT‐XRD), in‐situ high temperature (HT)‐XRD, and scanning electron microscope combining energy dispersive X‐ray analysis (SEM‐EDX) as temperature varied from 300 °C to ...

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Statistical optimization of culture medium for the overproduction of chicken anemia virus immunogen‐ VP1 protein in a recombinant E. coli for vaccine application

17-10-2014 | Meng‐Shiou Lee, I‐Fen Lin, Guan‐Hua Lai, Yen‐Chang Lin, Ken‐Yuon Li, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT The capsid protein VP1 of chicken anemia virus (CAV) is an immunogen usually to be used when developing the diagnostic kits and subunit vaccines. In this study, a codon‐optimized VP1 gene of CAV was used to express VP1 in Escherichia coli. To establish the best culture medium for VP1 ...

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Real-Time UV-Visible Spectroscopy Analysis of Purple Membrane-Polyacrylamide Film Formation Taking into Account Fano Line Shapes and Scattering

17-10-2014 | María Gomariz et al., PLoS ONE, 2014

by María Gomariz, Salvador Blaya, Pablo Acebal, Luis Carretero We theoretically and experimentally analyze the formation of thick Purple Membrane (PM) polyacrylamide (PA) films by means of optical spectroscopy by considering the absorption of bacteriorhodopsin and scattering. We have applied ...

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Sensors, Vol. 14, Pages 19507-19516: Multifrequency Excitation Method for Rapid and Accurate Dynamic Test of Micromachined Gyroscope Chips

17-10-2014 | Deng, Yan ; Zhou, Bin ; Xing, Chao ; Zhang, Rong, Sensors, 2014

A novel multifrequency excitation (MFE) method is proposed to realize rapid and accurate dynamic testing of micromachined gyroscope chips. Compared with the traditional sweep-frequency excitation (SFE) method, the computational time for testing one chip under four modes at a 1-Hz frequency ...

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Electrochemical Behavior of Nicotine at Unmodified Carbon Paste Electrode and Its Determination in a Set of Refilling Liquids for Electronic Cigarettes

16-10-2014 | Matěj Stočes, Ivan Švancara, Electroanalysis, 2014

Abstract In this manuscript, a carbon paste electrode (CPE) from traditional components has been used to study the electrochemical oxidation of nicotine and its feasibility to be performed at unmodified and otherwise untreated carbon paste in an effort to propose a simple voltammetric method ...

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Phytosanitary irradiation in ports of entry: a practical solution for developing countries

16-10-2014 | Emilia Bustos‐Griffin, Guy J. Hallman, Robert L. Griffin, International Journal of Food Science & Technology, 2014

Summary The advantages of using ionising irradiation as a phytosanitary treatment have been demonstrated commercially in the past two decades and several countries currently use the technology for commercial treatments to meet plant quarantine requirements. Although many countries have ...

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Oligopeptide-heavy metal interaction monitoring by hybrid gold nanoparticles based assay.

15-10-2014 | jane politi; JOLANDA SPADAVECCHIA; Mario Iodice; Luca De Stefano, Analyst, 2014

Phytochelatins are small peptides that can be found in several organisms, which uses these oligopeptides to handle heavy metal elements. Here, we report a method of monitoring interactions between lead (II) ions in aqueous solution and Phytochelatin 6 oligopeptides bioconjugated onto pegylated ...

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