منابع مشابه
Simple oxygen-failure safety device.
Recent correspondence in the British Medical Journall-4 has discussed the need for oxygen-failure devices and the philosophy of their design, so we shall not repeat this discussion here. Briefly, however, we think that very occasional oxygen failures are inevitable, during both anaesthesia and artificial ventilation with oxygen. Because the danger is so remote any safety device that is to gain ...
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OXYGEN FAIL-SAFE SYSTEMS for anaesthetic gas machines have been advocated as standard safety features. 1-4 They are designed to prevent delivery of hypoxic gas mixtures in the event of an interruption or exhaustion of O~ pipeline or tank sources. In such a circumstance the fail-safe device causes all gas flow to cease, so alerting the operator of the apparatus to the problem. Some types of gas ...
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Multiwall carbon nanotubes (MWCNTs) are grown via chemical vapour deposition method directly on a stainless steel substrate. Raman spectroscopy and transmission electron microscopy are the techniques chosen to characterize the structure of the synthesized carbon nanotubes: few structural defects are detected. After their removal from the stainless steel substrate, the as-grown MWCNTs are then a...
متن کاملSimple Photovoltaic Device Based on Multiwall Carbon Nanotube/Silicon Heterojunction
Multiwall carbon nanotubes (MWCNTs) are grown via chemical vapour deposition method directly on a stainless steel substrate. Raman spectroscopy and transmission electron microscopy are the techniques chosen to characterize the structure of the synthesized carbon nanotubes: few structural defects are detected. After their removal from the stainless steel substrate, the as-grown MWCNTs are then a...
متن کاملThe Safety Simple Subset
Regular-LTL (RLTL), extends LTL with regular expressions, and it is the core of the IEEE standard temporal logic PSL. Safety formulas of RLTL, as well as of other temporal logics, are easier to verify than other formulas. This is because verification of safety formulas can be reduced to invariance checking using an auxiliary automaton recognizing violating prefixes. In this paper we define a sp...
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ژورنال
عنوان ژورنال: BMJ
سال: 1974
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.3.5930.570