ISSN:0031-9228    

DOI:10.1063/1.2809718

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2809720

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2809723

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2809725

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The North Pole warmed just in time this spring to avoid a possibly significant depletion of ozone. That conclusion is one outcome of the second Airborne Arctic Stratospheric Expedition, which reported on its findings at the end of April. Earlier, in the first days of February, the participating scientists had released some preliminary results because they were alarmed at seeing very high levels of chlorine monoxide, a reactive chlorine compound associated with ozone destruction. As shown in the figure below, which is based on satellite data, the levels and extent of CLO this January were comparable to those seen during the winter months in the Antarctic, where an “ozone hole” is known to develop at that time.

ISSN:0031-9228    

DOI:10.1063/1.2809726

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The inspections of Iraq mandated by the United Nations as a cease‐fire condition at the end of the Gulf War in February 1991 have revealed a clandestine nuclear materials production and weapons design program of unexpected size and sophistication. The total value of that program, in terms of equipment and personnel deployed between 1981 and 1991, may be on the order of $5‐10 billion. The program employed an estimated 7000 scientists and 20 000 workers.

ISSN:0031-9228    

DOI:10.1063/1.881312

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

“Why are you interested in this man?” they usually ask me. I don't know the answer. It just happened. Maybe my interest in the life of Fritz Houtermans started when I began coming across repeated references in various books to a gifted German physicist who emigrated to the USSR after Hitler came to power, was arrested by the Soviets in 1937 as a German spy and then was extradited back to Germany in 1940, only to return to occupied Kharkov two years later with the conquering Nazis.

ISSN:0031-9228    

DOI:10.1063/1.881313

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Understanding human perception is at the forefront of scientific research goals today. The development of robots, virtual reality, speech coders and speech recognition devices depends on a good understanding of how we hear. The cochlea is the part of the inner ear that converts acoustic signals to the neural code that conveys auditory information to the brain. Modeling the function of the cochlea has been an active area of research since the development of the digital computer, yet several mysteries remain.

ISSN:0031-9228    

DOI:10.1063/1.881349

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2809727

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2809728

出版商:AIP    

年代:1992

数据来源: AIP