>>> 哲学 经济学 法学 教育学 文学 历史学 理学 工学 农学 医学 军事学 管理学 旅游学 文化学 特色库
搜索结果: 1-15 共查到Avian相关记录76条 . 查询时间(0.058 秒)
BMC has an evolving portfolio of some 300 peer-reviewed journals, sharing discoveries from research communities in science, technology, engineering and medicine. In 1999 we made high quality research ...
Find related stories on NSF's Long-Term Ecological Research Program at this link.Ecologists have long wondered about the impact of urbanization on bird biodiversity. Are cities with higher avian biodi...
The aim of the present study was to examine the effects of testosterone (T) and estradiol-17β (E2) on the production of progesterone (P4) by granulosa cells, and of the E2 on the production of P4 and ...
日前,由中国动物学会和北京林业大学联合主办的鸟类学英文学术期刊《Avian Research》期刊编辑部收到美国汤森路透集团(Thomson Reuters)通知,《Avian Research》(《鸟类学研究》)已被Science Citation Index Expanded (SCIE)收录。被检索的文章回溯至2014年创刊起,期刊将于2017年迎来首个影响因子。期刊同时还被Zoologic...
Avian mycobacteriosis was diagnosed in one female Mauritian Pink pigeon (Nesoenas mayeri) from a zoological collection. The bird displayed clinical symptoms of apathy, loss of body weight, ruffled f...
Avian mycobacteriosis was diagnosed in one female Mauritian Pink pigeon (Nesoenas mayeri) from a zoological collection. The bird displayed clinical symptoms of apathy, loss of body weight, ruffled fea...
Avian metapneumovirus causes an acute highly contagious upper respiratory tract infection primarily of turkeys and chickens. The disease can cause significant economic losses in turkey and chicken flo...
Avian tuberculosis was diagnosed in a captured female Ruppell's griffon vulture (Gyps ruppellii) with granulomatous splenitis and hepatitis. At necropsy, whitish to yellow nodules of various sizes wer...
This study reports on the first quantification of avian influenza virus in the organs of mute swans that died during the epizootic of avian influenza (H5N1) between January and April 2006 in the Czech...
High mortality of nestling cockatiels (Nymphicus hollandicus) was observed in one breeding flock in Slovakia. The nestling mortality affected 50% of all breeding pairs. In general, all the nestlings i...
The aim of this work was to study the presence of mycobacteria in tissue samples from four cadavers fixed with formalin, and tissue samples from a recently deceased unpreserved individual, who had a h...
CHAMPAIGN, Ill. — An international effort involving more than 100 researchers, nine supercomputers and about 400 years of CPU time has yielded the most reliable avian tree of life yet produced, resear...
Montane forests provide habitat for unique assemblages of flora and fauna that contribute significantly to a region’s biodiversity. Previous work indicates that montane forest ecosystems are exceeding...
The world's biodiversity is concentrated in tropical ecosystems, yet tropical forests are being converted for agriculture at a rapid rate. I evaluated the potential of an alternative coffee production...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...