Chengzeng Zhou, Yichao Ge, Donghe Lan, Meilu Zhao, Bin Wu
Harzianolides B-G: Undescribed Butenolides isolated from the fungus Trichoderma harzianum ZN-4
Fitoterapia
evaluating scientific quality notoriously difficult problem standard solution ideally published scientific results scrutinised true experts field given scores quality quantity according established rules practice however called peer review usually performed committees general competence rather specialists insight needed assess primary research data committees tend therefore resort secondary criteria like crude publication counts journal prestige reputation authors institutions estimated importance relevance research field1 making peer review much lottery rational process2 3 background hardly surprising alternative methods evaluating research sought citation rates journal impact factors seem quantitative objective indicators directly related published science citation data obtained database produced institute scientific information isi philadelphia continuously records scientific citations represented reference lists articles large number worlds scientific journals references rearranged database show many times publication cited within certain period results published science citation index sci basis science citation index authors publication lists annual citation rate papers scientific author research group thus calculated similarly citation rate scientific journalknown journal impact factorcan calculated mean citation rate articles contained journal4 journal impact factors published annually sci journal citation reports widely regarded