100 research outputs found
The thermal conductivity of the spin-1/2 XXZ chain at arbitrary temperature
Motivated by recent investigations of transport properties of strongly
correlated 1d models and thermal conductivity measurements of quasi 1d magnetic
systems we present results for the integrable spin-1/2 chain. The thermal
conductivity of this model has , i.e. it is infinite for zero frequency . The weight
of the delta peak is calculated exactly by a lattice path
integral formulation. Numerical results for wide ranges of temperature and
anisotropy are presented. The low and high temperature limits are studied
analytically.Comment: 12 page
Health Insurance: The Hawaii Experience
This paper provides a detailed look at the State that is often considered a model for what States can do to help provide universal or near universal health insurance coverage for their residents. The paper discusses the history of health insurance provision in Hawaii, emphasizing two relatively recent State insurance laws: 1) the 1974 law that required employers to offer coverage to most of their employees, and 2) the 1989 law that provided a State subsidy for coverage of those individuals who fell in the gap between employment-based coverage and Medicaid coverage. The paper addresses the difficulties faced in evaluating the impact of Hawaii’s various attempts to provide coverage and access, and speaks to whether all or parts of Hawaii’s experience can be transferred to other States or to the Nation as a whole
What factor within the Japanese Association for Acute Medicine (JAAM) disseminated intravascular coagulation (DIC) criteria is most strongly correlated with trauma induced DIC? A retrospective study using thromboelastometry in a single center in Japan
Thermal conductivity via magnetic excitations in spin-chain materials
We discuss the recent progress and the current status of experimental
investigations of spin-mediated energy transport in spin-chain and spin-ladder
materials with antiferromagnetic coupling. We briefly outline the central
results of theoretical studies on the subject but focus mainly on recent
experimental results that were obtained on materials which may be regarded as
adequate physical realizations of the idealized theoretical model systems. Some
open questions and unsettled issues are also addressed.Comment: 17 pages, 4 figure
Inverse association of antioxidant and phytoestrogen nutrient intake with adult glioma in the San Francisco Bay Area: a case-control study
BACKGROUND: Increasing evidence from epidemiologic studies suggest that oxidative stress may play a role in adult glioma. In addition to dietary antioxidants, antioxidant and weak estrogenic properties of dietary phytoestrogens may attenuate oxidative stress. Our hypothesis is that long-term consumption of dietary antioxidants and phytoestrogens such as genistein, daidzein, biochanin A, formononetin, matairesinol, secoisolariciresinol and coumestrol, may reduce the risk of adult glioma. METHODS: Using unconditional logistic regression models, we compared quartiles of consumption for several specific antioxidants and phytoestrogens among 802 adult glioma cases and 846 controls from two study series from the San Francisco Bay Area Adult Glioma Study, 1991 – 2000, controlling for vitamin supplement usage, age, socioeconomic status, gender, ethnicity and total daily calories. For cases, dietary information was either self-reported or reported by a proxy. For controls, dietary information was self-reported. Gender- and series- specific quartiles of average daily nutrient intake, estimated from food-frequency questionnaires, were computed from controls. RESULTS: Significant p-values (trend test) were evaluated using significance levels of either 0.05 or 0.003 (the Bonferroni corrected significance level equivalent to 0.05 adjusting for 16 comparisons). For all cases compared to controls, statistically significant inverse associations were observed for antioxidant index (p < 0.003), carotenoids (alpha- and beta-carotene combined, p < 0.05), daidzein (p = 0.003), matairesinol (p < 0.05), secoisolariciresinol (p < 0.003), and coumestrol (p < 0.003). For self-reported cases compared to controls, statistically significant inverse associations were observed for antioxidant index (p < 0.05) and daidzein (p < 0.05). CONCLUSION: Our results support inverse associations of glioma with higher dietary antioxidant index and with higher intake of certain phytoestrogens, especially daidzein
Contribution of bone marrow-derived cells to the pro-inflammatory effects of protease-activated receptor-2 in colitis
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