abstract   background: the compounds which contain nitrogen entering the environment can cause some problems, such as eutrophication for water resources and potential risk for human health because of methemoglobinemia and cancer. biological techniques are effective in removing nitrate. the aim of this study was to remove nitrate from groundwater using denitrification. the main objectives of thi...

With the deep development and application of Internet technology, data need to be processed more and more, when dealing with large amounts of data. Spark is a versatile high-performance and parallel computing framework, which can be applied to data mining. This paper is based on the parallelization of platforms’ K-means algorithm, by building a YARN cluster environment and making experiments to...

Accurate predictions of the amount and the rate of long- term deformation of reinforced soils under an applied load are important key issue in geotechnical engineering, in which the deformation of soil develops with time at a state of constant effective stress. Since geosynthetic is generally considered creep sensitive therefore, evaluation of creep behavior of geosynthetic reinforced soil (GRS...

Internal geometry of a textile reinforcement is an important factor of the reinforcement performance during the composite manufacturing and service life. In this article, generalized geometrical models of structural stitching loops are presented for the sewing, tufting, and dual-needle stitching methods. The term 'structural' presumes here that the stitching yarn does not only consolidate the p...

A wearable computing has been proposed as an alternative of the best mobile computing interfaces and devices. A digital garment acts as a key element of wearable computing. We will apply digital yarn link as material of data communications on purpose to take advantage of a digital garment. This paper proposes the link buffering architecture and the transmission processes for peer-to-peer (P2P) ...

The paper focuses on the importance of using specific values (values where the axial property is normalised by dividing by density) for properties of CNT yarn-like fibres to avoid the huge uncertainties introduced by the state of lateral compression of the yarn, a difficulty not only associated with the measurement of cross sectional area, but exacerbated by the influence of winding forces and ...

Making the most of twists and turns The rise of small-scale, portable electronics and wearable devices has boosted the desire for ways to harvest energy from mechanical motion. Such approaches could be used to provide batteryfree power with a small footprint. Kim et al. present an energy harvester made from carbon nanotube yarn that converts mechanical energy into electrical energy from both to...

The silk yarn containing Ag nanoparticles was prepared through the chemical reduction under ultrasound irradiation. In this system, ethylene glycol served as a reduction reagent and protecting silver nanoparticles from aggregation. The effect of some parameter, such as power of ultrasound irradiation and temperature in growth of the nanometric Ag were studied. Particle sizes and morphology of n...