Plant community succession of degradation and desertification in sandy grassland.;

Features and Degradation of Eco-Environment of Lakes and Marshes along the East Route of the South-to-North Water Transfer Project;

Experimental Study on the Stiffness Degradation of Composite Laminates under Constant Amplitude Loading;

Studies on the degeneration of artificial cellar mud and countermeasure in industrial scale;

Analysis on Grassland Degeneration in the West Jilin Province Based on Satellite RS;

Development and degeneration of mesonephros in Alligator sinensis embryos;

Standardization of degenerate and retarded linear differential system;

Global existence and blow up of a degenerate parabolic system;

Global Existence and Blow-up for Degenerate and Singular Semilinear Parabolic System with Nonlocal Source;

Deterioration and Destoration of Mountainous Region Ecosystem in Chongqing;

Eco-environmental Deterioration and Strategies for Preventing it in Inner Mongolia.;

Review of the research on structure behavior s deterioration based on corroded reinforced concrete;

Since 1970s,degeneracy and vanish of wetland in the whole world cause grave ecology environment and the community problem,directly threaten the development of the area,the country and even the whole worl.

The pit mud degeneracy of reason was found out.

We analyze the degeneracy phenomenon of sequential Monte Carlo particle filters based on bayesian theorem,put focus on the key techniques(good choice of importance density and use of resampling) to reduce its effects.

This paper introduces a method of taking samples from a highyield fermenter for separation and rejuvenation when the regression phenomenon emerges from the citric acid producer C0827 The effect of nictrogen content in raw materials and α-amylase content on the cintric acid yield is studied.

The evolution of the world history involves both progression and regression.