THE RETURN OF THE NATURE——Thoreau and his environmental thought

With the environmental crisis comes a crisis of the imagination,a need to find new ways to understand nature and humanity's relation to it the most ambitious study to date of how literature represents the natural environment.As we meation this,we can not forget Thoreau,yes the paper tried to display the aspect of thoreaua as a fist environmental sait and denonce scathe the mordern civilization.     

STUDIES OF THE DEVELOPMENT OF KALOULA BOREALIS HARBOUR Ⅱ. THE EFFECT OF FOOD ON THE DEVELOPMENT OF THE DIGESTIVE SYSTEM

Tadpoles of Kaloula borealis Barbour were used for feeding experiments. They were fed separately on four different kinds of food viz, 1) yolk of hardboiled egg,2) algae collected from ponds 3) yolk and algae together and 4) yolk,lgae plus thyroxin. The control specimens consisted of tadpoles richly collected from time to time from outdoor ditches.     

THE EFFECT OF ANION ON THE MORPHOLOGY OF ELECTRODE, THE ADSORPTION OF QUINOLINE AND THE SER SPECTRA

The effect of different anion on the morphology of electrode, the adsorption of quinoline and the SER spectra are investigeted. The adsorption peak of quinoline appears in cyclic voltammogram in Cl~- (or Br~-) -containing electrolyte, but not in NV_3~- solution. We also find that the adsorption of quinoline is correlated with Cl~- concentration. This indicates some complex consist of Cl~- and quinolne are produced on Ag surface, Scanning electron microscopy is used to evaluate differences in surface morphology subjected to ORC treatment in different anion solution.The surface morphology of Aq electrode roughened in NO_3~- solution on which no SER signal can be observed differs greatly from that of Ag electrode which roughened in Cl~-(or Br~-)-containing electrolyte.     

CHOICE OF THE GAUGE FOR THE FIRST POST-NEWTONIAN GRAVITATIONAL POTENTIAL OF THE EARTH

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