In the last few years the Pichia pastoris expression system has been gaining more and more interest for the expression of recombinant proteins. Many groups have employed fermentation technology in their investigations because the system is fairly easy to scale up and suitable for the production in the milligram to gram range. A large number of heterologous proteins from different sources has be...

In this paper, we report the construction and characterization of a sensor to detect volatile organic compounds, particularly alcohols. The was fabricated by depositing polydimethylsiloxane sensing film on surface long-period fiber grating (LPFG). LPFG spectrum, which taken as response, measured in Teflon chamber, where different concentrations methanol, ethanol, propanol, butanol samples were ...

This work presents the development of a quinoxaline and rhodamine conjugate system that acts as colorimetric chemosensor for hydrogen sulfate (HSO4?) ions in methanol media. sensor has been characterized both theoretically experimentally. The detection limits HSO4? are small 0.71 µM 3.8 absorption emission experiments, respectively. effectiveness probe recognizing gel solid phase is evaluated w...

The structure of the sensing element of a gold-deposited optical fiber sensor was simplified and quantitative analyses of various alcohols with the sensor showed improvement of the performance. The sensor uses surface plasmon resonance (SPR) at the interface of a sample solution and a thin (10 - 70 nm) gold film deposited on half of the exposed core of the optical fiber. The sensor with a film ...

We present a feasibility study of ZnO-based FBAR devices and their fabrications for the ultra-mass-sensitive sensor application. In this work, a considerable shift in the resonance frequency is observed due to the mass-loading effect by a mixture of ink and volatile methanol. A high sensitivity of 0.05 10 Hz cm/ng is obtained in the FBAR-based device, which is 5 orders of magnitude higher than ...

adequate coverage is one of the main problems for distributed wireless sensor networks and the effectiveness of that highly depends on the sensor deployment scheme. given a finite number of sensors, optimizing the sensor deployment will provide sufficient sensor coverage and save power of sensors for movement to target location to adequate coverage. in this paper, we apply fuzzy logic system to...

It is not sufficiently appreciated that methly alcohol is very toxic. For econoi' reasons, methyl (wood) alcohol is employed as a substitute for tbyl (grain) alcohol, in what may be termed comparatively innocent products, such as perfumes, hair tonics, skin lotions, , '/ polishes, varnishes, etc. Government analysts, not infrequently, find it employed in the manufacture of various extracts for ...

Calixarene L1 has been designed to behave as a fluorescent molecular sensor capable of distinguishing between chiral amines on the basis of their size and chirality. Fluorescence quenching studies of calixarene L1 in methanol demonstrated no enantiomeric selectivity for a short chain amino alcohol, phenylglycinol, while excellent selectivity was observed for a longer chain amino alcohol, phenyl...