Search Results

You are looking at 41 - 50 of 504 items for :

  • "concentration" x
  • Materials and Applied Sciences x
  • All content x
Clear All

Abstract

This paper presents the results of the floristical examinations performed in the units of a former secondary sedimentation pond system in Hungary. The outcome of analyses on the chromium content of the plants is discussed. Beside the chemical analyses, observations on the plants, the characterization of the ecological state of plant stands adapted to heavy metal load. Results of the elemental analysis for heavy metals revealed that none of the plants constituting the natural vegetation can be treated as hyperaccumulator plant. A green cover and the detoxification process of Cr(VI) by plants is suggested to be more important than the present extensive phytoextraction procedure. It can be stated that due to the disturbance our investigated area has diverse vegetation, in addition these plants can tolerate a high concentration of heavy metals, and they are able to take up them.

Restricted access

Nanoparticle Concentration Eff. results max/increase % Comments [ 17 ] Water Al 2 O 3 0.2, 0.25, 0.3%wt 13% Al 2 O 3 , 11% Fe 2 O 3 Variable flow rate [ 18 ] Water Al 2 O 3 3, 1%vol 52.4, 73 Variable incident angles [ 19 ] Water TiO 2 0.05, 0.1, 0.2, 0.5%vol 56

Open access
Resolution and Discovery
Authors: Svetlana Jovanovic, Olaf C. Haenssler, Milica Budimir, Duška Kleut, Jovana Prekodravac, and Biljana Todorovic Markovic

into water (200 mL) and filtrated until the pH was 7. Chemical reduction of both GO and GQDs was conducted using in situ generated hydrogen [ 7 ]. Synthesized GQD and GO were dispersed in water in a concentration of 1 mg/mL and the ccHCl acid (35

Open access

2008 Continuous monitoring of residual chlorine concentrations in response to controlled microbial intrusions in a laboratory-scale distribution system Water Research 42 3162

Restricted access

bacterial cells were re-suspended in phosphate-buffered saline solution (PBS) and adjusted to the required concentration. Antibacterial activity experiments To assess the ability of K/rGO-CS matrix to capture and kill bacteria, each substrate was immersed in

Open access

). The measurement conditions were an accelerating voltage of 30 kV with a beam diameter of 1 μm for a counting time of 60–120 s and a minimum detectable weight concentration ranging from 0.1 to 1 wt%. Physical separation treatment for Abu Rusheid

Open access

to increase with high replacement level. Terrence [ 52 ] evaluated the efficacy of metakaolin in minimizing the expansion due to alkali-silica reaction (ASR). When HRM is used to replace up to 20% of OPC the alkali concentration of the pore solutions

Open access

transducer surface for the PA probe with inclined elements. The obtained results have shown a high concentration of the ultrasound beam on the focal point direction with reduced effect of side lobes. Fig. 7. Dimensionless displacement amplitude over the

Open access

comparison with other commercial fillers. He reported that the mechanical properties of the vulcanizates filled with rice husk ash were comparable to those filled with inert fillers. The influence of fibre length and concentration on the physical properties

Open access
International Review of Applied Sciences and Engineering
Authors: Adebayo Surajudeen Adekunle, Adekunle Akanni Adeleke, Peter Pelumi Ikubanni, Peter Olorunleke Omoniyi, Tajudeen Adelani Gbadamosi, and Jamiu Kolawole Odusote

–7 ]. Rapid quenching is required to circumvent unwanted concentration of alloying elements along the boundary structure grain. More so, failure not to quench faster than necessary in order to lessen residual stress can result into excessive cracking or

Open access