نتایج جستجو برای: fixed film biological processes

تعداد نتایج: 1207571  

2004
X. Richard Zhang Xianfan Xu

We develop high-sensitivity biosensors based on microcantilevers. The polymer microcantilevers are fabricated by fast and cost-effective laser machining processes. Polymer film is selected because it gives better sensitivity of deflection measurements than silicon due to its lower Young’s modulus and also its cost is much lower. We demonstrate using these polymer microcantilevers for biological...

ژورنال: سلامت و محیط زیست 2013
آیتی, بیتا, مرادی پسند, لیلا,

Background and Aim: In this study, the removal of dye blue reactive-171 by combination of advanced oxidation processes UV/H2O2 and SBAR has been investigated. Methods: The efficiency of chemical and biological system was first investigated separately. In chemical system, the kind, power, initial dye concentration and hydrogen parasitize and in biological system, hydraulic detention time, aerati...

2013
Junwei Liu Chuanyi Zhang

This paper introduces the concept of square-mean piecewise almost periodic for impulsive stochastic processes. The existence of square-mean piecewise almost periodic solutions for linear and nonlinear impulsive stochastic differential equations is established by using the theory of the semigroups of the operators and Schauder fixed point theorem. The stability of the square-mean piecewise almos...

Journal: :Optics express 2013
Hongwen Ren Su Xu Yifan Liu Shin-Tson Wu

An optically anisotropic microlens array film directly formed on a single substrate is demonstrated. UV curable diacrylate monomers are coated as a film on the substrate. Under the action of fringing field, not only the film surface is flattened by the generated dielectric force but also the monomers are reoriented to form a gradient refractive index (GRIN) distribution in the film. Via UV expo...

In this paper, we consider double sequence iteration processes for strongly $rho$-contractive mapping in modular space. It is proved, these sequences, convergence strongly to a fixed point of the strongly $rho$-contractive mapping.

1999

A maintained assumption of all the tests used in the previous sections of this chapter is that whatever stochastic process underlies the data is a stable one, i.e., that the form of any serial dependencies within a data series remains stable. In other words, there is one correct model that describes the stochastic process, and the parameters of this correct model remain constant throughout the ...

2007
B.Schiedt J. Cervera S. Mafé P. Ramírez

The theoretical description of ionic transport processes in nanoporous materials is a very interesting topic, since these materials have promising technological applications e.g. in sensing and filtration of molecules with size comparable to the pore diameter, and especially single pores may serve as model systems for biological ion channels. By the track-etching method [1], it is possible to p...

Journal: :Water research 2011
Annalisa Onnis-Hayden Nehreen Majed Andreas Schramm April Z Gu

This study investigated the abundance and distribution of key functional microbial populations and their activities in a full-scale integrated fixed film activated sludge-enhanced biological phosphorus removal (IFAS-EBPR) process. Polyphosphate accumulating organisms (PAOs) including Accumulibacter and EBPR activities were predominately associated with the mixed liquor (>90%) whereas nitrifying...

Journal: :Applied and environmental microbiology 1985
T M Vogel P L McCarty

Tetrachloroethylene (PCE) and trichloroethylene (TCE), common industrial solvents, are among the most frequent contaminants found in groundwater supplies. Due to the potential toxicity and carcinogenicity of chlorinated ethylenes, knowledge about their transformation potential is important in evaluating their environmental fate. The results of this study confirm that PCE can be transformed by r...

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