5,393 research outputs found
Process development and pilot-plant production of silane polymers of diols Annual summary report, 22 Apr. 1966 - 22 Apr. 1967
Preparation of cross-linkable linear high molecular weight polyaryloxysilane
Patent Institutions: Shifting Interactions Between Legal Actors
This contribution to the Research Handbook on Economics of Intellectual Property Rights (Vol. 1 Theory) addresses interactions between the principal legal institutions of the U.S. patent system. It considers legal, strategic, and normative perspectives on these interactions as they have evolved over the last 35 years. Early centralization of power by the U.S. Court of Appeals for the Federal Circuit, newly created in 1982, established a regime dominated by the appellate court\u27s bright-line rules. More recently, aggressive Supreme Court and Congressional intervention have respectively reinvigorated patent law standards and led to significant devolution of power to inferior tribunals, including newly created tribunals like the USPTO\u27s Patent Trial and Appeals Board. This new era in institutional interaction creates a host of fresh empirical and normative research questions for scholars. The contribution concludes by outlining a research agenda
The Benefits of Trace Cu in Wrought Al-Mg Alloys
The softening and strengthening contributions in pre-deformed and aged
Al-Mg-Cu alloys containing 3wt.%Mg and 0.5wt.%Cu are evaluated by a combination
of microscopy, mechanical testing and modelling. A refined phenomenological
model for the work hardening response, accounting for the separate effects of
recovery and precipitation, is shown to be suitable for an unambiguous
determination of the precipitation hardening contribution in these alloys.
Significantly, it is found that the mechanical response of these alloys is not
strongly impacted by Cu content (in the low Cu content regime), pre-deformation
level or aging temperature meaning that the alloys are robust with respect to
variations in composition. This is interesting from the perspective of alloy
design concepts based on `recycling friendly' compositions in applications that
include paint-baking.Comment: 33 pages, 10 figure
Entanglement between more than two hundred macroscopic atomic ensembles in a solid
We create a multi-partite entangled state by storing a single photon in a
crystal that contains many large atomic ensembles with distinct resonance
frequencies. The photon is re-emitted at a well-defined time due to an
interference effect analogous to multi-slit diffraction. We derive a lower
bound for the number of entangled ensembles based on the contrast of the
interference and the single-photon character of the input, and we
experimentally demonstrate entanglement between over two hundred ensembles,
each containing a billion atoms. In addition, we illustrate the fact that each
individual ensemble contains further entanglement. Our results are the first
demonstration of entanglement between many macroscopic systems in a solid and
open the door to creating even more complex entangled states.Comment: 10 pages, 8 figures; see also parallel submission by Frowis et a
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