In this paper,the existence of periodic solutions for a time dependent agestructured population model is studied.The averaged net reproductive number is introdu
Incubation of dinoflagellate Crythecodinium cohnii chromosomes in cytoplasmic extracts of unfertilized Xenopus laevis eggs resulted in chromosomes decondensatio
Erwinia(E) gum is composed of glucose, fucose, galactose and glucuronic acid. The weightaverage molecular weights M w, numberaverage molecular weights M n and
Combinatorial peptide libraries have become powerful tools to screen functional ligands by the principle of affinity selection. We screened in a phage peptide l
The horminone (C20H28O4, Mr= 332.85) was first isolated from the leaves of Rabdosia Serra (Maxim) Hara and its crystal structure was determined by X-ray diffrac