منابع مشابه
The Photonic Railway
The Photonic Railway is proposed to overcome the limit of the current propulsion technology based on conventional rocketry for interstellar flight and to potentially open a new space era. The photonic railway, which is a permanent energy-efficient transportation structure based on the Beamed-Laser Propulsion (BLP) by Forward and the Photonic Laser Thruster (PLT) by the author, is proposed to en...
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Proceeding up the country in March last, we bethought ourselves it might be useful to note the state of the line generally, the sanitary and conservancy arrangements in vogue, and the practical conveniences at several stations, with a view to forming an opinion as to the care and attention paid to these matters "on the line." The barrack offices for troops, although somewhat improved of late ye...
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IT was during the Christmas-New Year holiday period that the first rumour reached me at my home in Nigeria that I might have to go to the Congo. It was on January 4 that I received a telephone message instructing me to proceed there with the utmost urgency. So I left next morning and at 8 a.m. on January 7 I arrived at Bakwanga in South Kasai, in a cargo aircraft loaded with salt fish. It appea...
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The Congo red stain has undergone several modifications since it was first used by Bennhold in 1922 in order to increase the specificity for staining amyloid. Most of the laboratories in the United States use the method of Puchtler which uses alkaline Congo red solution. Some of the variables associated with the procedure were investigated by us. Our results showed the following: (1) amyloid sh...
متن کاملThe Railway Traveling Salesman Problem
Weconsider theRailwayTravelingSalesmanProblem (RTSP) in which a salesman using the railway network wishes to visit a certain number of cities to carry out his/her business, starting and ending at the same city, and having as goal to minimize the overall time of the journey. RTSP is an NP-hard problem. Although it is related to the Generalized Asymmetric Traveling Salesman Problem, in this paper...
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ژورنال
عنوان ژورنال: Minutes of the Proceedings of the Institution of Civil Engineers
سال: 1899
ISSN: 1753-7843
DOI: 10.1680/imotp.1899.19056