Slow release of nitrate by charred organic matter used as a soil amendment (i.e. biochar) was recently suggested as potential mechanism of nutrient delivery to plants which may explain some agronomic benefits of biochar. So far, isolated soil-aged and composted biochar particles were shown to release considerable amounts of nitrate only in extended (>1 h) extractions ("slow release"). In this s...

Inexpensive pesticide measurement by Enzyme-Linked lmmunoSorbent Assay (ELISA) technology, widely used for environmental monitoring, may be a useful tool for providing instruction on the environmental f te of pesticides in the classroom. A laboratory experiment hat provides instruction in state-of-the-art ELISA pesticide testing methods and demonstrates the effect of soil organic matter content...

The aim of poplar plantations is to achieve high biomass production over a short rotation period. This requires low mortality and fast development of the transplants. The experiment described in this paper examines methods aimed at enhancing survival and development of Populus trichocarpa plants by application of fertilizers, a hydrogel or a combination of both to dormant cuttings just before p...

Pure and mixed lanthanum and cerium oxides were synthesized via a reverse microemulsion-templated route. This approach yields highly homogeneous and phase-stable mixed oxides with high surface areas across the entire range of La:Ce ratios from pure lanthana to pure ceria. Surprisingly, all mixed oxides show the fluorite crystal structure of ceria, even for 10 lanthanum contents as high as 90%. ...

Soil and crop management practices may alter the quantity, quality, and placement of plant residues that influence soil C and N fractions. We examined the effects of two tillage practices [conventional till (CT) and no-till (NT)] and five crop rotations [continuous spring wheat (Triticum aestivum L.) (CW), spring wheat–fallow (W–F), spring wheat–lentil (Lens culinaris Medic.) (W–L), spring whea...

Organic soil has a high content of water and compressibility. This paper sheds light on organic improving its shear resistance through the use stone columns to strengthen reduce precipitation. Four crushed concrete were used after mixing them with 9% sodium silicate, this ratio was chosen several laboratory tests determine ideal ratio. The curing period gives highest compressive strength for mi...

This paper discusses Mixed Signal LSI technology with embedded power transistors. Trends in Mixed Signal LSI technology are explained at first. Mixed signal LSI technology has proceeded with the help of fine fabrication technology and SOI technology. The BEOL transistor is a new development, which uses InGaZnO (IGZO) as its TFT channel material. The BEOL transistor is one future device which en...

For the purpose of investigating influence fine contents on dynamic properties mixed soil, a series triaxial tests were conducted gravelly soil with contents. The confining pressures 100, 150, and 200 kPa selected. carried out samples 0%, 20%, 40% respectively. axial strain pore water pressure curves specimens obtained when different excitation forces applied. experimental results indicated tha...