1-Cyclo-hexyl-6,7-dimeth-oxy-1,4-di-hydro-naphthalene.

The title compound, C18H24O2, was isolated from the leaves extract of Ficus carica L. The cyclo-hexane ring displays a chair conformation whereas the cyclo-hexa-1,4-diene ring adopts a flattened boat conformation with methyl C atoms at the prow and stern. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds into supra-molecular chains propagated along the b-axis direction.

Composition and Free Radical Scavenging Activity of Kernel Oil from Torreya grandis, Carya Cathayensis, and Myrica R ubra.

In this study, we measured the composition and free radical scavenging activity of several species of nuts, namely, Torreya grandis, Carya cathayensis, and Myrica rubra. The nut kernels of the aforementioned species are rich in fatty acids, particularly in unsaturated fatty acids, and have 51% oil content. T.

[Silkworm excrement organic fertilizer: its nutrient properties and application effect].

In this paper, silkworm excrement was harmless-treated via controlled fermentation to prepare silkworm excrement organic fertilizer (SEOF). The nutrient properties of the SEOF were determined, and a pot experiment was conducted to examine the application effect of the fertilizer. After fermentation, the total N, P, and K contents in the SEOF had a significant increase, being 58.

Kinetics of the pyrolytic and hydrothermal decomposition of water hyacinth.

The kinetics of water hyacinth decomposition using pyrolysis and hydrothermal treatment was compared. With pyrolysis, initial vaporization occurred at 453 K as determined by thermogravimetric analysis, while initial solubilisation occurred at 433 K with subcritical hydrothermal treatment. The "kinetic triplet" was determined for the ranges of 423-483 K (range I) and 473-553 K (range II) using the Coats-Redfern method for both treatments.

Response surface analysis of the water: feed ratio influences on hydrothermal recovery from biomass.

Response surface methodology was employed to analyze the interaction between the water:feed ratio (2.0-9.0), reaction temperature (180-280°C) and retention time (0-60 min) on hydrothermal conversion of lawn grass clippings as a model biomass.

[Effects of organic fish protein liquid fertilizer on enzyme activities and microbial biomass C and N in a silt soil].

By the method of thermostatic culture, this paper studied the effects of different application rates (0.5, 1.5, and 2.

Variability of fecal indicator bacteria in flowing and ponded waters in southern California: implications for bacterial TMDL development and implementation.

Recreational water quality is assessed by using water quality objectives for fecal indicator bacteria (FIB) including total coliform, fecal coliform (or E. coli), and/or Enterococcus. It is required under the Clean Water Act that a TMDL be developed for a bacteria-impaired water body.

[Cu-hyperaccumulators in mining area].

Plant species distributing in three Cu-mining area were investigated, and Cu concentrations in soils and plants were analyzed. The results showed that Cu ore deposit mostly was distributed at the altitude of about 630 m. Elsholtzia splendens and Rumex acetosa were distributed only on the Cu ore deposit or the place with high Cu concentration, and the maximum Cu concentrations in these two plants were 1060 mg.