منابع مشابه
Effect of Different Current Values on Microstructure and Mechanical Properties of Microalloyed Steels Joined by the Submerged Arc Welding Method
In this study, microalloyed steels were joined by using the submerged arc welding method at different welding currents of 350 A, 400 A and 450 A. The effects of selected welding parameters on the microstructure and mechanical properties of welded materials were investigated. Tensile tests and microhardness measurements were performed. Microstructural changes have been identified in the welding ...
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Cooperation in the cerebellum y crossing knockout mice deficient for two cell adhesion molecules, Sakurai et al. have obtained the first genetic evidence for the molecules' functional overlap, and have explained why earlier tissue culture results were not replicated in single knockout mice (page 1259). Sakurai and colleagues started by engineering mice deficient for NrCAM, which had only mild (...
متن کاملJoined-up thinking
Australia is embarking on an ambitious scheme described as a terrestrial version of the Great Barrier Reef, to establish a wildlife corridor along its 2,800-kilometre east coast to help protect the country's remarkable wildlife from potential climate change. The project aims to re-establish a network of habitats from the Australian Alps in the southern state of Victoria to the Atherton tablelan...
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Usually, when letters arrive by the now old-fashioned method of snail-mail, I look forward to opening the envelopes, enjoying the fact that I can still look forward to receiving messages and communications in a more traditional manner, without knowing the title, subject or mail addresses of the senders. Coupled with this is the fact that getting letters delivered to you personally, brings an ai...
متن کاملAcoustic Imaging of Joined Surfaces
In this paper, the results of imaging experinents with the interfacial region~ of representative solid material joints, ~1ng a transmission-type scanning acoustic microscope operating at 150 HHz, are reported. Voids and flaws in specially made joints as well as production-line silicon solder bonds (die bonded headera' have been detected using the transmission~de of operation of the microscope. ...
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ژورنال
عنوان ژورنال: TRENDS IN THE SCIENCES
سال: 1999
ISSN: 1884-7080,1342-3363
DOI: 10.5363/tits.4.7_82