Effect of phosphorus concentration on growth of Myriophyllum spicatum and Hydrilla Verticillata

Lemna minor was cultured in the medium containing five different phosphorus concentrations(0.

Characteristic about runoff silt and phosphorous concentration under simulated rainfall

Aerosol mass concentration algorithm based on the number of equivalent spherical particles;

Influence of temperature and relative humidity upon aerosol mass concentrations vertical distributions;

Analysis of aerosol number concentration and mass concentration using APS;

A non-linear mathematics model for the quality concentration C of paper pulps is given in this paper to make linear compensation for the temperature, pH and pulp quality.

Measuring mass concentration of gas-solid multiphase flow by triboelectricity;

Study on variational regularity of airborne dust concentration conversion factor(K-Factor) in tunnel under construct;

Raising seedlings test by sowing was conducted by immersing seed of lanthanon solution with 4 different concentrations and 2 immersed time,the results showed that:To the seedlings of 1-yr-old of Larix olgensis by,its growth in height and basal diameter,length of main root and amount of lateral roots,also in survival rate,can be greatly promoted by all treatment.

The action of optical direct-reading techniques in environment monitoring was described,with analysis of relationship between atmospheric aerosol mass concentration distribution and number distribution by multiple regressions.

According to different aerosol parameters measured by aerodynamic particle sizer(APS)and ta- pered element oscillating microbalance(TEOM)in February 2006 in Beijing,relationship between aerosol mass concentration distribution and number distribution is described,and empirical formulas is given by multiple regression.