A catalogue of low-resolution IUE spectra of dwarf novae and nova-like stars

A catalogue is presented of all the low-resolution IUE spectra of dwarf novae and nova-like stars that were recorded until the end of 1987. All spectra have been reduced, and are displayed, in a homogeneous way. In addition to details about these data, to the extent available, their position in the outburst light curves is given, physical information about each system, and a comprehensive list of references for published observations in all wavelength ranges.In collaboration with Janet A. Mattei, American Association of Variable Star Observers, 25 Birch Street, Cambridge, MA 02138-1205, U.S.A.     

《舌尖上的中国》背后鲜为人知的故事

火爆全中国的纪录片《舌尖上的中国》终于有了图书版The hometown of each tongue constitute the wholeof China,and forming a parr of something calledculture,inherited from generation to generation.With wisdom,Chincse got the delicous food fromnature,all this has been able to achieve,duc totheir fear of God and food as well as love of the     

假期的完美计划

老上海风味or新希腊风貌夏天是度假的好时机,我们一定要为即将到来的假期提前做好安排和部署。仔细考虑一下,在这个炎热的夏日,是要出国避暑呢,还是呆在家里做御宅族。暑假是旅游和度假的黄金期,高峰时期的酒店和线路都会涨价、爆满,因此我们必须要提早做好万全的准备。目标是:假期的完美计划!     

传说中的美景 天堂湿地＆海上梦幻乐园

8月一直以来都是旅游的旺季,各国各地的商家都鼓足了劲呐喊摇旗,希望能够吸引到更多的客人。作为一个游客,很幸运地、你可以在本月享受法国的狂欢节、日本的夏日祭典、美国的商场减价促销……当然,你也可以选择避开熙熙攘攘的人群,寻找一处优美的景色,依山傍水,自然地留下,冥冥之中,命运就这样引导了你,寻找那处传说中的美景,然后,尽情享受大自然的恩赐吧。本月,推荐给你的是人间天堂的西溪湿地,享受静谧之美;海上的梦幻乐园,享受蔚蓝之魅。     

An overview of Allied-Signal's avionics development in the CIS

AlliedSignal Commercial Avionics Systems (ASCAS) and its partners have established the following business objectives: short term (forward-fit and retrofit with off-the-shelf products; co-development of integrated systems); mid term (co-production of avionics products in the CIS); long term (become an integrated element of CIS aerospace industry in partnership with local firms and to maintain the necessary focus to achieve these goals). ASCAS has formed a strategic business enterprise which is dedicated to developing the avionics market within the CIS. ASCAS was fortunate to find a joint venture partner who possesses skills that complement its present core competencies. The advantage of this business arrangement is that, while expanding their experience and expertise in the area of systems integration, they can directly benefit from the expertise and capabilities of indigenous airframe and equipment manufacturers (customer knowledge, simulation and integration experience, capable/skilled manpower)     

世界上最壮丽的景色——意大利恺撒奥古斯都酒店

概况海拔1000英尺以上的悬崖上,意大利奥古斯都恺撒酒店提供卡普里岛的最壮观的景色之一。从酒店的客房内,你可以眺望到令人惊叹的美景。那不勒斯湾附近,维苏威火山,索伦托海岸,伊斯基亚和卡普里岛包括由Axel Munthe,我们的别墅是令人惊叹的风景庆祝。     

The winter anomaly of 1983/84 as observed in the A3-absorption and 5 kHz atmospherics in Central Europe

The MAP/WINE winter 1983/84 is studied using the LF-MF-HF A3 absorption and 5 kHz atmospherics observed in Czechoslovakia and some other data. The “normal” winter anomaly in Central Europe is developed well in this winter (maximum in mid-January) and appears to be “free of geomagnetic contamination”. The stratospheric warming activity and related changes of prevailing zonal wind in the lower thermosphere in February and March 1984 are followed by decreases of absorption of radio waves. It agrees with our results from preceding winters /1/.     

A large area multitechnique experiment for hard X-ray astronomy

A balloon-borne multitechnique large area experiment consisting of 2 co-aligned detectors (3200 cm² NaI and 1800 cm² multiwire proportional counters), is described, which is capble of producing observations of the hard X-ray sky with very high sensitivity and good spectral resolution over the whole operative range (15–300 keV).