89,459 research outputs found
Emergency escape system uses self-braking mechanism on fixed cable
Slide-wire system with a twist level slide device incorporates automatic descent and braking for the safe and rapid evacuation of personnel from tall structures. This device is used on any tall structure that might require emergency evacuation. It is also used to transfer materials and equipment
System locates randomly placed remote objects
System to locate objects submerged underwater uses active/passive sonar techniques in which a transmitter is attached to the object to be recovered and a receiver is used for search. The system is rugged, has a long term operating life, and furnishes a precise bearing on the object
Can acyclic conformational control be achieved via a sulfur-fluorine gauche effect?
The gauche conformation of the 1,2-difluoroethane motif is known to involve stabilising hyperconjugative interactions between donor (bonding, σC-H) and acceptor (antibonding, σ*C-F) orbitals. This model rationalises the generic conformational preference of F-Cβ-Cα-X systems (φFCCX ≈ 60°), where X is an electron deficient substituent containing a Period 2 atom. Little is known about the corresponding Period 3 systems, such as sulfur and phosphorus, where multiple oxidation states are possible. Conformational analyses of β-fluorosulfides, -sulfoxides and -sulfones are disclosed here, thus extending the scope of the fluorine gauche effect to the 3rd Period (F-C-C-S(O) n ; φFCCS ≈ 60°). Synergy between experiment and computation has revealed that the gauche effect is only pronounced in structures bearing an electropositive vicinal sulfur atom (S+-O-, SO2)
Study of lunar reflective components of solar radio emission semiannual status report
Solar radio frequency reflection from lunar surface for scattering measuremen
A simulator and flight study of yaw coupling in turning maneuvers of large transport aircraft
Piloted simulator study of yaw coupling in turning maneuvers of supersonic transport compared with flight test data on large variable stability jet transpor
Study and determination of an optimum design for space utilized lithium doped solar cells Quarterly report
Recovery characteristics of electron irradiated, lithium doped, solar cell
The sleep cycle and subcortical-cortical EEG relations in the unrestrained chimpanzee
Sleep cycle and subcortical-cortical EEG relations in unrestrained chimpanze
The Lisbon Strategy and the EU's structural productivity problem
The structural nature of the EU's productivity downturn is confirmed by the analysis in this paper, with the bulk of the deterioration emanating from an outdated and inflexible industrial structure which has been slow to adapt to the intensifying pressures of globalisation and rapid technological change. The EU's productivity problems are driven by the combined effect ofan excessive focus on low and medium-technology industries (with declining productivity growth rates and a globalisation-induced contraction in investment levels); an inability to seriously challenge the US's dominance in large areas of the ICT industry, as reflected in the relatively small size of its ICT production sector; and finally, its apparent slowness in reaping the productivity enhancing benefits of ICT in a range of ICT-using industries, although measurement issues severely complicate an assessment of the gains from ICT production and diffusion.lisbon strategy, productivity, growth, labour market, Denis, Mc Morrow, R�ger, Veugelers, structural productivity
Considerations of electron beam propagation from space vehicles
Theoretical analysis of electron beam array propagation from spacecraf
The use of multispectral sensing techniques to detect ponderosa pine trees under stress from insect or pathogenic organisms Annual progress report
Ground and aerial imaging techniques to detect tree damage caused by bark beetles in forested area
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