春华秋实，友谊花开——第12届国际孢粉学大会及中国代表活动侧记

四年一届的国际孢粉学界的学术盛会--国际孢粉学大会于2008年8月31日-9月5日在德国美丽的莱茵河畔城市波恩召开.本次会议为第12届会议,并与国际古植物大会同时同地联合召开,吸引了世界各地的800多位代表与会,实为空前盛况.参加本次会议的中国大陆地区代表共计46名,位列各国或地区之第6,真实反映了我国古植物与孢粉学界在近年来的发展状况.另外,中国台湾地区也有6位代表与会.     

THE 8^TH INTERNATIONAL CONGRESS ON THE SYSTEMATICS AND ECOLOGY OF MYXOMYCETES

Dear colleagues,
We sincerely welcome your participation in the 8^th International Congress on the Systematics and Ecology of Myxomycetes （ICSEM8）, which will be held at Jilin Agricultural University, Changchun, China, from August 1 lth to the 15th, 2014. This is the first time our myxomycete congress will meet in Asia.     

THE FUTURE OF BIOETHICS: THREE DOGMAS AND A CUP OF HEMLOCK

In this paper I argue that bioethics is in crisis and that it will not have a future unless it begins to embrace a more Socratic approach to its leading assumptions. The absence of a critical and sceptical spirit has resulted in little more than a dominant ideology. I focus on three key issues. First, that too often bioethics collapses into medical ethics. Second, that medical ethics itself is beset by a lack of self‐reflection that I characterize here as a commitment to three dogmas. Third, I offer a more positive perspective by suggesting how bioethics may benefit from looking towards public health ethics as a new source of inspiration and direction.     

7~(th) INTERNATIONAL CROP SCIENCE CONGRESS AUGUST 14-19,2016 BEIJING,CHINA CROP SCIENCE INNOVATION AND SUSTAINABILITY

<正>ANNOUNCEMENTInternational Crop Science Congress(ICSC)is a regular forum for crop scientists from around the world to integrate current knowledge into a global context and international applications.The Congress is organized about every four years beginning in July,1992.The International Crop Science Society has primary oversight for general operations of Congresses.The location will rotate among     

10. PROCEEDINGS OF THE SEVENTEENTH ANNUAL GENERAL MEETING OF THE S.A. ORNITHOLOGICAL SOCIETY HELD IN THE COMMITTEE ROOM OF THE PUBLIC LIBRARY. JOHANNESBURG,AT 3 P.M., SATURDAY, 8TH MARCH. 1947

Bruderer, B. 1994. Nocturnal bud migration in the Negev (Israel) a tracking radar study. Ostrich 65: 204–212.

The present publication summarizes the methodological possibilities of tracking radar and describes some features of nocturnal migration at two sites in the Negev, which include anwers to basic questions of bird migration. The directions of spring and autumn migration were practically opposite; only the headings in spring indicated some more compensation for stronger westerly winds. The volume of nocturnal spring migration was only about 65% of autumn migration, which may be an indication of mortality outside tie breeding area. Highest densities of migration at the two radar sites in the Negev Highlands (450 m above sea level) and in the Arava Valley (150 m below sea level) indicated flightlevels adjusted to atmospheric conditions aloft, and not to round level. Due to the trade-wind system, the birds heading southward in autumn flew mainly below flew mainly above 1500 m above sea level, while in spring they tended to make use of the anti-trades at higher altitudes. The decisive factor for altitude choice was the speed of tailwind in spring and autumn; other factors, such as temperature, humidity and pressure had no significant influence on the altitude distributions. With respect to the question of non-stop or intermittent flight across large desert areas, the data show that between the eastern deserts of Egypt and the Sinai/Negev complex the nocturnal migrants maintained their schedule of nocturnal flight and diurnal rest. A few exceptions of nocturnal migrants continuing migration at high altitudes into the day were identified mainly as heron- and gull-type birds. The proportion of waders and waterfowl identified by wing-beat pattern in nocturnal migration is nearly the same at both sites, indicating broad-front migration across the desert. The numbers of birds with continuous wingbeats is, however, so large compared to available estimates of waders and waterfowl wintering in Africa that careful reconsideration of the underlying assumptions in the radar and field estimates is necessary.