9-O-methylfusarubin was isolated from a novel source, Fusarion oxysporum, and evaluated for its phytotoxic and chlorotic inducing properties in plants as well as its potential as an antineoplastic agent.
This note shows that for a BVP of Poisson's equation withQm(u, v) as its source function, a direct evaluation of some integrals yields the same exact results as obtained by similarity analysis.
The nonlinear PDEs consist of a heat equation with the Joule heating as a source and a current conservation equation with temperature-dependent electrical conductivity.
An oil sprays made up of DDVP as the main pesticide, 1,2-dichlorobenzene as an auxiliary solvent and diesel oil as a diluent is a new processing preparation. Field tests showed that the oil spray could be used for ULV aerial application, ULV area application and area smoke spraying. Some of the advantages of the oil sprays are : high-speed in killing with poison, good effectiveness, small dosage, easy operation, wide source of raw materials, handy process, low cost and so on.
A brief account is first given on the significance of using slag lignin as a chemi- cal grout material from the viewpoint of utilizing industrial waste, enlarging the source of grout material, decreasing cost and limiting environmental pollution. Main results of laboratory experiments are given in the article, including pro- perties and formulation of slag lignin, factors affecting setting time and strength of congelation, the permeability and viscosity as well as toxicity of slag lignin. All this pr...
Some samples from different geological origins and different geological ages are dated by means of ~(14)C using liquid scintillator method. The samples range from buried old wood in glacier deposits at 4200 and 3900 metersabove sea level in Xie-Cang(Tibet), the wood in karat cave of Qui-Zhow province and charcoal in civilization layers in Li-Yang of Jiang-Su Province with geological ages range from some 1,000 years to 7,000 years ago. The carbon is first converted into calcium carbide at 980C, then it is hy...