63 research outputs found

    An Empirical Study of Electric Power Demand Control by Real-time Feedback of Consumption Levels: Case of Nushima Island Households

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    AbstractElectric power demand management will play an important role in the creation of smart-energy communities. We are conducting a field experiment on the real-time feedback of electric power consumption via smart meters and tablet PCs with the participation of 51 households on Nushima Island, one of Japan's remote islands. Our estimate of the effect of feedback in reducing power demand by panel data analysis has revealed that such feedback achieves a saving of 7.6 percent in electric power demand

    N=4 Instanton Calculus in Omega and R-R Backgrounds

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    We study the instanton calculus for N=4 super Yang-Mills theory in ten-dimensional Omega-background with the R-symmetry Wilson line gauge field. From the ADHM construction of instantons in the background, we obtain the deformed instanton effective action. For a certain case we get the effective action of N=2^* theory in the Omega-background. We also study the low-energy effective D(-1)-brane action for the D3/D(-1)-brane system in the R-R 3-form field strength backgrounds and find that the action agrees with the instanton effective action in the Omega-background.Comment: 28 page

    Diagnostic criteria for acute-onset type 1 diabetes mellitus (2012): Report of the Committee of Japan Diabetes Society on the Research of Fulminant and Acute-onset Type 1 Diabetes Mellitus

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    Type 1 diabetes is a disease characterized by destruction of pancreatic β-cells, which leads to absolute deficiency of insulin secretion. Depending on the manner of onset and progression, it is classified as fulminant, acute-onset or slowly progressive type 1 diabetes. Here, we propose the diagnostic criteria for acute-onset type 1 diabetes mellitus. Among the patients who develop ketosis or diabetic ketoacidosis within 3 months after the onset of hyperglycemic symptoms and require insulin treatment continuously after the diagnosis of diabetes, those with anti-islet autoantibodies are diagnosed with \u27acute-onset type 1 diabetes mellitus (autoimmune)\u27. In contrast, those whose endogenous insulin secretion is exhausted (fasting serum C-peptide immunoreactivity <0.6 ng/mL) without verifiable anti-islet autoantibodies are diagnosed simply with \u27acute-onset type 1 diabetes mellitus\u27. Patients should be reevaluated after certain periods in case their statuses of anti-islet autoantibodies and/or endogenous insulin secretory capacity are unknown

    Humin Assists Reductive Acetogenesis in Absence of Other External Electron Donor

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    The utilization of extracellular electron transfer by microorganism is highly engaging for remediation of toxic pollutants under &ldquo;energy-starved&rdquo; conditions. Humin, an organo-mineral complex of soil, has been instrumental as an external electron mediator for suitable electron donors in the remediative works of reductive dehalogenation, denitrification, and so forth. Here, we report, for the first time, that humin assists microbial acetogenesis as the extracellular electron donor using the electron acceptor CO 2 . Humin was obtained from Kamajima paddy soil, Japan. The anaerobic acetogenic consortium in mineral medium containing CO 2 / HCO 3 &minus; as the inorganic carbon source used suspended humin as the energy source under mesophilic dark conditions. Retardation of acetogenesis under the CO 2 -deficient conditions demonstrated that humin did not function as the organic carbon source but as electron donor in the CO 2 -reducing acetogenesis. The consortium with humin also achieved anaerobic dechlorination with limited methanogenic activity. Total electron-donating capacity of humin was estimated at about 87 &micro;eeq/g-humin. The metagenomic sequencing of 16S rRNA genes showed the predominance of Firmicutes (71.8 &plusmn; 2.5%) in the consortium, and Lachnospiraceae and Ruminococcaceae were considered as the CO 2 -reducing acetogens in the consortium. Thus, microbial fixation of CO 2 using humin introduces new insight to the holistic approach for sustainable treatment of contaminants in environment

    Genetics of the BB rat: association of autoimmune disorders (diabetes, insulitis, and thyroiditis) with lymphopenia and major histocompatibility complex class II

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    The BB/Wor rat develops spontaneous autoimmune diabetes mellitus and also frequently develops lymphocytic thyroiditis. To clarify the role of T cell lymphopenia and the major histocompatibility complex (MHC) in the development of these autoimmune disorders, we studied back-cross animals between the inbred thyroiditis and diabetes-prone BBNB/Wor subline (MHC RT1.AuBuDuCu) and three nonlymphopenic MHC-congenic rat strains: PVG.RT.1u (RT1.AuBuDuCu), PVG.R8 (RT1.AaBuDuCu), and PVG.R23 (RT1.AuBaDaCav1). We observed that 1) lymphopenia is absolutely required for the development of spontaneous diabetes and insulitis, and is usually associated with the development of thyroiditis; 2) the MHC region to the right of the class I RT1.A locus is strongly correlated with diabetes and insulitis; and 3) this region is also significantly associated with the development of thyroiditis, but the susceptibility of certain MHC class II alleles (u and a) for disease development is distinct for insulitis and thyroiditis. Furthermore, no recombination was observed between lymphopenia (lyp) and the neuropeptide Y (Npy) gene polymorphism, which confirmed that lyp maps very close to Npy. The present data suggest that spontaneous insulitis and thyroiditis in the BB/Wor rat develop through common immune defects involving T cell lymphopenia, but do not always segregate together due to disease-specific interactions with the MHC class II-linked genes

    An Experimental Study of the Impact of Dynamic Electricity Pricing on Consumer Behavior: An Analysis for a Remote Island in Japan

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    The aim of this research was to investigate how consumer behavior changes after application of dynamic electricity pricing and the persistence of those changes. Based on the investigation results, the authors also discuss the policy implications of demand management to shift consumption to days that have more solar radiation, while at the same time reducing overall consumption. The dynamic pricing experiment was implemented on Nushima Island, located in the center of Japan, with the participation of 50 households. The methodologies used in this study are panel analysis with random effects, and the difference in differences method. Several linear regression analyses are performed to predict hourly electricity usage from a number of explanatory variables, such as life-style factors, the frequency of access to the visualization website, control for weather factors (wind speed and temperatures), and other attributes of the households to predict the log of hourly electric energy consumption. The results show that dynamic pricing brought about 13.8% reduction of electric energy consumption in comparison with the pre-experiment period. Also, by applying a new experimental design approach, this study finds data supportive of habit formation by participants. Based on the findings, this research tries to develop a policy for sustainable energy conservation in remote islands
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