Coupling to haloform molecules in intercalated C60?

For field-effect-doped fullerenes it was reported that the superconducting transition temperature Tc is markedly larger for C60.2CHX_3 (X=Cl, Br) crystals, than for pure C60. Initially this was explained by the expansion of the volume per C60-molecule and the corresponding increase in the density of states at the Fermi level in the intercalated crystals. On closer examination it has, however, turned out to be unlikely that this is the mechanism behind the increase in Tc. An alternative explanation of the enhanced transition temperatures assumes that the conduction electrons not only couple to the vibrational modes of the C60-molecule, but also to the modes of the intercalated molecules. We investigate the possibility of such a coupling. We find that, assuming the ideal bulk structure of the intercalated crystal, both a coupling due to hybridization of the molecular levels, and a coupling via dipole moments should be very small. This suggests that the presence of the gate-oxide in the field-effect-devices strongly affects the structure of the fullerene crystal at the interface.Comment: 4 pages, 1 figure, to be published in PRB (rapid communication

CORRELATIONS AMONG GRAIN CHARACTERISTICS USED TO DETERMINE THE EFFECTS OF ROUGH RICE STORAGE TIME AND TEMPERATURE ON AROMATIC RICE QUALITY

Summary statistics and corresponding Spearman correlation coefficients are illustrated for various subsets of aromatic rough rice storage time and temperature data from (a) the College Station texture sensory panel, (b) the New Orleans aroma and flavor sensory panel, and (c) the Beaumont USDA-ARS Rice Quality Laboratory. These correlations represent the inclinations of seemingly-related measures of several attributes to "move together," acting as an indicator of their associations with or impacts on one another.Crop Production/Industries,

CORRELATIONS AMONG GRAIN CHARACTERISTICS USED TO DETERMINE THE EFFECTS OF MILLED RICE STORAGE TIME AND TEMPERATURE ON AROMATIC RICE QUALITY

Summary statistics and corresponding Spearman correlation coefficients are illustrated for various subsets of aromatic milled rice storage time and temperature data from (a) the College Station texture sensory panel, (b) the New Orleans aroma and flavor sensory panel, and (c) the Beaumont USDA-ARS Rice Quality Laboratory. These correlations represent the inclinations of seemingly-related measures of several attributes to "move together," acting as an indicator of their associations with or impacts on one another.Crop Production/Industries,

Surface defects from fractional branes. Part I

We show that the Gukov-Witten monodromy defects of supersymmetric Yang-Mills theory can be realized in perturbative string theory by considering an orbifold background of the Kanno-Tachikawa type and placing stacks of fractional D3-branes whose world-volume partially extends along the orbifold directions. In particular, we show that turning on a constant background value for some scalar fields in the closed string twisted sectors induces a non-trivial profile for the gauge field and one of the complex scalars of the world-volume theory, and that this profile exactly matches the singular behavior that oneexpects for a Gukov-Witten surface defect in the N = 4 super Yang-Mills theory. To keep the presentation as simple as possible, in this work we restrict our analysis to surface defects corresponding to a \u21242 orbifold and defer the study of the most general case to a companion paper

Phenomenology yesterday, today, and tomorrow: a proposed phenomenological response to the double challenges of contemporary recovery-oriented person-centered mental health care

This paper argues that a dialectical synthesis of phenomenology’s traditional twin roles in psychiatry (one science-centered, the other individual-centered) is needed to support the recovery-oriented practice that is at the heart of contemporary person-centered mental health care. The paper is in two main sections. Section I illustrates the different ways in which phenomenology’s two roles have played out over three significant periods of the history of phenomenology in 20th century psychiatry: with the introduction of phenomenology in Karl Jaspers’ General Psychopathology in 1913; with the development a few years later of structural phenomenological psychopathology; and in the period of post-War humanism. Section II is concerned with the role of phenomenology in contemporary mental health. There has been a turn to phenomenology in the current period, we argue, in response to what amounts to an uncoupling of academic psychiatry from front-line clinical care. Corresponding with the two roles of phenomenology, this uncoupling has both scientific aspects and clinical aspects. The latter, we suggest, is most fully expressed in a new model of “recovery,” defined, not by the values of professionals as experts-by-training, but by the values of patients and carers as experts-by-experience, specifically, by what is important to the quality of life of the individual concerned in the situation in question. We illustrate the importance of recovery, so defined, and the challenges raised by it for both the evidence-base and the values-base of clinical decision-making, with brief clinical vignettes. It is to these challenges we argue, that phenomenology through a synthesis of its twin roles is uniquely equipped to respond. Noting, however, the many barriers to such a synthesis, we argue that in the current state of development of the field, it is by way of a dialectical synthesis of phenomenology’s roles that we should proceed. From such a dialectic, a genuine synthesis of roles may ultimately emerge. We conclude with a note on the wider significance of these developments, arguing that contrary to 20th century stereotypes, they show psychiatry to be leading the way for healthcare as a whole, in developing the resources for 21st century person-centered clinical care

MINIMALIST: An Environment for the Synthesis, Verification and Testability of Burst-Mode Asynchronous Machines

MINIMALIST is a new extensible environment for the synthesis and verification of burst-mode asynchronous finite-state machines. MINIMALIST embodies a complete technology-independent synthesis path, with state-of-the-art exact and heuristic asynchronous synthesis algorithms, e.g.optimal state assignment (CHASM), two-level hazard-free logic minimization (HFMIN, ESPRESSO-HF, and IMPYMIN), and synthesis-for-testability. Unlike other asynchronous synthesis packages, MINIMALIST also offers many options:literal vs. product optimization, single- vs. multi-output logic minimization, using vs. not using fed-back outputs as state variables, and exploring varied code lengths during state assignment, thus allowing the designer to explore trade-offs and select the implementation style which best suits the application. MINIMALIST benchmark results demonstrate its ability to produce implementations with an average of 34% and up to 48% less area, and an average of 11% and up to 37% better performance, than the best existing package. Our synthesis-for-testability method guarantees 100% testability under both stuck-at and robust path delay fault models,requiring little or no overhead. MINIMALIST also features both command-line and graphic user interfaces, and supports extension via well-defined interfaces for adding new tools. As such, it is easily augmented to form a complete path to technology-dependent logic

Labor and Employment: The Battle for the Gig Economy

The following is a transcript of a 2016 Federalist Society panel entitled Labor & Employment Law: The Battle for the Gig Economy. The panel originally occurred on November 17, 2016 during the National Lawyers Convention in Washington, D.C. The panelists were: Mark Brnovich, Attorney General, Arizona; Mr. Mark Floyd, Senior Director and Global Relations Lead, Uber Technologies Inc.; Mr. Randel K. Johnson, Senior Vice President, Labor, Immigration and Employee Benefits, U.S. Chamber of Commerce; and Mr. Bill Samuel, Director of Government Affairs, AFL-CIO. The moderator was the Honorable Judge Thomas M. Hardiman of the U.S. Court of Appeals, Third Circuit

Src, PKCα, and PKCδ are required for αvβ3 integrin-mediated metastatic melanoma invasion

<p>Abstract</p> <p>Background</p> <p>Integrins, cell-surface receptors that mediate adhesive interactions between cells and the extracellular matrix (ECM), play an important role in cancer progression. Expression of the vitronectin receptor αvβ3 integrin correlates with increased invasive and metastatic capacity of malignant melanomas, yet it remains unclear how expression of this integrin triggers melanoma invasion and metastasis.</p> <p>Results</p> <p>Two melanoma cell lines C8161.9 and M14 both express high levels of αvβ3 integrin and adhere to vitronectin. However, only the highly metastatic C8161.9 cells are capable of invading vitronectin-enriched Matrigel in an αvβ3-depenent manner. Elevated levels of PKCα and PKCδ, and activated Src were detected specifically in the highly metastatic melanoma cells, but not in the low metastatic M14 cells. Inhibition of Src or PKC activity suppressed αvβ3-dependent invasion. Furthermore, over expression of Src or PKCα and PKCδ was sufficient to confer αvβ3-dependent invasiveness to M14 cells. Stress fiber formation and focal adhesion formation were almost completely absent in C8161.9 cells compared to M14 cells. Inhibition of Src signaling was sufficient to restore normal actin architecture, and resulted in decreased p190RhoGAP phosphorylation and enhanced RhoA activity. Src had no effect on Rac activity. Loss of PKCα expression, but not PKCδ, by siRNA inhibited Rac and PAK activity as well as invasiveness. Loss of PKCα restored focal adhesion formation and partially restored stress fiber formation, while loss of PKCδ primarily restored stress fibers.</p> <p>Conclusion</p> <p>The misregulated expression of PKCα and PKCδ and elevated Src activity in metastatic melanoma cells is required for efficient αvβ3-mediated invasion. PKCα and Src enhance αvβ3-mediated invasion in part by increasing the GTPase activity of Rac relative to RhoA. PKCα influences focal adhesion formation, while PKCδ controls stress fibers.</p