in this study, nf membrane was used for surface water treatment. the rejection of organic material, measured as total organic carbon (toc), by nanofiltration was examined. the effects of application of pre-ozonation and pre-chlorination on toc removal are discussed and their performances are compared with the performances of nanofiltraion system without pretreatment process. in nf, natural orga...

Organic matter dynamics were studied in five streams at Coweeta Hydrologic Laboratory. Three of these streams drained logged watersheds, and two drained reference deciduous forest watersheds. Litter inputs to the streams draining disturbed watersheds were significantly lower than to reference streams. Additionally, while undisturbed litterfall consisted primarily of relatively refractory leaf s...

We report an experimental study of a planar organic-inorganic microcavity consisting of a porous silicon distributed Bragg reflector, a single layer of acridina orange as active material and a top aluminum reflector. By tuning the cavity resonance energy around the maximum of the organic material photoluminescence, we found an intense emission and a spectral narrowing of the emission band to ab...

In a partly urbanized catchment to the south of Trier, Germany, selected sediment samples were separated into different size fractions ranging from <2 urn to 200 urn. Each sample fraction was analysed for heavy metals, poly chlorinated biphenyls (PCB), poly cyclic aromatic hydrocarbons (PAH) and organic carbon. The results show a linear correlation between heavy metal content and particle size....

vermiculture is the culture of earthworms. the goal is to continually increase the number of worms in order to obtain a sustainable harvest. the worms are either used to expand a vermicomposting operation or sold to customers who use them for the same or other purposes. vermicomposting is the process by which worms are used to convert organic materials (usually wastes) into a humus-like materia...

Mapping and dating soil organic material is of great importance in soil use and evaluation. Yet the most common mapping method of these features is based on visual, qualitative interpretation of air-photos. In this study we examine the feasibility of mapping soil organic material content by using airborne hyperspectral reflective remote sensing methodology. This technique was tested in Henshan ...

A noncatenated, Zn-based metal-organic framework (MOF) material bearing silyl-protected acetylenes was constructed and postsynthetically modified using "click" chemistry. Using a solvent-based, selective deprotection strategy, two different organic azides were "clicked" onto the MOF crystals, resulting in a porous material whose internal and external surfaces are differently functionalized.

This paper presents the results of the economical evaluation of the possibility of RFID technology 7 adoption in an European company involved in the manufacturing of the fuselage of a new long-range, 8 mid-size, wide-body jet airliner made of carbon fibre reinforced polymer. The peculiar constraints to the 9 management of some of the raw materials – Time And Temperature Sensitive (TATS) materia...

This paper presents an analytical review of data on the interaction of volatile corrosion inhibitors with the atmosphere, vaporization processes, methods of experimental and computational estimation of the vapor pressure of organic compounds, and effects of vaporization conditions and compound structure on vapor pressure.