Sample records for ad alzheimer disease

  1. alzheimers disease amyloid: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alzheimer???s Disease Medications. Open Access Theses and Dissertations Summary: ??The brain of Alzheimer???s disease (AD) is characterized by accumulations of ??-amyloid peptide...

  2. alzheimer disease amyloid: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alzheimer???s Disease Medications. Open Access Theses and Dissertations Summary: ??The brain of Alzheimer???s disease (AD) is characterized by accumulations of ??-amyloid peptide...

  3. Inside Alzheimer's Disease

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reveal conditions that lead to the disease's signature tangles and plaques in the brain March 12, 2015 Inside Alzheimer's Disease Neuron membrane disruption may underlie...

  4. Educational attainment and rate of cognitive decline in Alzheimer's disease

    E-Print Network [OSTI]

    Hemmy, Laura Sue

    2009-05-15T23:59:59.000Z

    Alzheimer’s disease (AD) progression and hypotheses of the cognitive reserve theory were investigated by testing for a relation between educational attainment and rate of decline in patients with Mild Cognitive Impairment, possible AD, probable AD...

  5. S100 Inhibitors: A New Paradigm for Treating Alzheimer’s Disease 

    E-Print Network [OSTI]

    Mathai, David 1991-

    2011-04-27T23:59:59.000Z

    Alzheimer’s disease (AD) is the most common form of dementia, a neurological condition characterized by cognitive impairment and the inability to perform daily tasks. Neuritic protein aggregates in the brain, known as ...

  6. Why Do We Get Alzheimer's Disease?

    SciTech Connect (OSTI)

    Wyss-Coray, Tony (Stanford University) [Stanford University

    2006-01-02T23:59:59.000Z

    Neurodegenerative diseases and Alzheimer's disease (AD) in particular, are among the major health concerns of the elderly in industrialized societies. The cause of AD is unknown and no disease-modifying treatments are available. The disease is characterized clinically by a progressive dementia and pathologically by the accumulation of protein aggregates in the brain and a profound loss of nerve cells. It has also become clear recently that local immune responses are activated in the AD brain and may have a role in the disease. Our laboratory uses genetic mouse models to understand the disease process and to identify potential therapeutic targets.

  7. alzheimer amyloid peptide: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alzheimer???s Disease Medications. Open Access Theses and Dissertations Summary: ??The brain of Alzheimer???s disease (AD) is characterized by accumulations of ??-amyloid peptide...

  8. Utilization of Fibroblast Steroidogeic Capacity as a Predictive Marker for Alzheimer's Disease

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    the cause of AD must be related to aging · Figure 1. Sex Hormone Dyscrasia Following Menopause Post, including coronary heart disease, stroke, Alzheimer's disease and osteoporosis. Since circulating

  9. New Clues in Predicting Alzheimer's Disease

    ScienceCinema (OSTI)

    Jagust, William

    2013-05-29T23:59:59.000Z

    Theres a new clue in the search to identify the harbingers of Alzheimers disease. More info: http://newscenter.lbl.gov/feature-stories/2008/12/16/predict-alzheimers-disease/

  10. BONE LOSS IN RELATION TO HYPOTHALAMIC ATROPHY IN ALZHEIMER'S DISEASE

    E-Print Network [OSTI]

    Loskutova, Natalia Y.

    2011-05-12T23:59:59.000Z

    considerable burden on the health system, patients, and caregivers. 1.2 Alzheimer’s Disease and Bone Loss Bone health is an important issue in aging and AD. Osteoporosis–related fractures are among the major health and socioeconomic concerns in aging... of bone fractures, and a determining factor in clinical diagnosis of osteoporosis (Ammann and Rizzoli 2003). Several studies in women suggest that low BMD is associated with poorer cognitive function and subsequent cognitive decline (Yaffe, Browner et al...

  11. Motor signs during the course of Alzheimer disease

    E-Print Network [OSTI]

    to 13.1 years (mean 3.6 years) in five centers in Europe and the United States. MOSIs were rated using signs (MOSIs) are common in Alzheimer disease (AD) and may be associated with rates of cognitive decline a standardized portion of the Unified Parkinson's Disease Rating Scale. Overall, 3,030 visits

  12. alzheimer disease current: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    diagnosis of Alzheimers disease: CiteSeer Summary: update on combining genetic and brain-imaging measures Gary W. Small, MD Diagnosis of Alzheimers disease is often missed...

  13. Oxidative Modifications and Aggregation of Cu,Zn-Superoxide Dismutase Associated with Alzheimer and Parkinson Diseases*

    E-Print Network [OSTI]

    Li, Lian

    to cysteic acid in AD and PD brains. Quantitative Western blot analyses demonstrate that the total level(s) that could potentially be tar- geted by similar therapeutic strategies. Alzheimer disease (AD),1 Parkinson

  14. Towards an Objective Assessment of Alzheimer's Disease: The Application of a Novel Evolutionary Algorithm

    E-Print Network [OSTI]

    Fernandez, Thomas

    the way out of a large building. It also affects the drawing of simple three- dimensional geometric shapes countries [4]. The disease occurs when the amyloid -protein forms miliary bodies (plaques) and dense bundles conclusions are drawn in Section 5. 2. ALZHEIMER'S DISEASE Alzheimer's disease (AD) is the most common form

  15. Innovative Alzheimer's disease clinical trial design in the coming age of biomarkers

    E-Print Network [OSTI]

    Hillerstrom, Hampus

    2008-01-01T23:59:59.000Z

    Alzheimer's disease (AD) is a field with huge unmet need and only a few symptomatic treatments with limited efficacy have been made available to patients. With the testing of disease-modifying drugs in recent years, the ...

  16. Aluminum and silica intake in drinking water and the risk of Alzheimer's disease or cognitive decline: findings of the

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Aluminum and silica intake in drinking water and the risk of Alzheimer's disease or cognitive,2 , Commenges Daniel1,2 , Helmer Catherine2,3 , Jean-François Dartigues2,3 . Abbreviations: Al, Aluminum; AD, Alzheimer's Disease; MMSE, Mini Mental State Examination; Si, Silica Running head: Aluminum, silica in water

  17. Iron and aluminum interaction with amyloid-beta peptides associated with Alzheimer’s disease

    SciTech Connect (OSTI)

    Drochioiu, Gabi; Ion, Laura [Alexandru Ioan Cuza University of Iasi, 11 Carol I, Iasi 700506 (Romania); Murariu, Manuela; Habasescu, Laura [Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, Iasi 700487 (Romania)

    2014-10-06T23:59:59.000Z

    An elevation in the concentration of heavy metal ions in Alzheimer’s disease (AD) brain has been demonstrated in many studies. A? precipitation and toxicity in AD brains seem to be caused by abnormal interactions with neocortical metal ions, especially iron, copper, zinc, and aluminum [1–3]. There is increasing evidence that iron and aluminum ions are involved in the mechanisms that underlie the neurodegenerative diseases [4,5]. However, evidence was brought to demonstrate that some A? fragments, at physiological pH, are not able to form binary complexes with Fe(III) ions of sufficient stability to compete with metal hydroxide precipitation [6]. On the contrary, multiple metal ions are known to interact with A? peptides [7]. Consequently, we investigated here the interaction of Fe(II/III) and Al(III) ions with some amyloid-? peptides and fragments that results in peptide aggregation and fibrillation [8,9]. Infrared spectroscopy, atomic force microscopy, scanning electron microscopy, electrophoresis and mass spectrometry demonstrated conformational changes of peptides in the presence of such metals.

  18. Taurine in drinking water recovers learning and memory in the adult APP/PS1 mouse model of Alzheimer's disease

    E-Print Network [OSTI]

    Kim, Hye Yun

    Alzheimer's disease (AD) is a lethal progressive neurological disorder affecting the memory. Recently, US Food and Drug Administration mitigated the standard for drug approval, allowing symptomatic drugs that only improve ...

  19. Metabonomic Profiling of TASTPM Transgenic Alzheimer's Disease Mouse Model

    SciTech Connect (OSTI)

    Hu, Zeping; Browne, Edward R.; Liu, Tao; Angel, Thomas E.; Ho, Paul C.; Chun Yong Chan, Eric

    2012-12-07T23:59:59.000Z

    Identification of molecular mechanisms underlying early stage Alzheimer’s disease (AD) is important for the development of new therapies against and diagnosis of AD. In this study, non-targeted metabotyping of TASTPM transgenic AD mice was performed. The metabolic profiles of both brain and plasma of TASTPM mice were characterized using gas chromatography-mass spectrometry and compared to those of wild type C57BL/6J mice. TASTPM mice were metabolically distinct compared to wild type mice (Q28 Y = 0.587 and 0.766 for PLS-DA models derived from brain and plasma, respectively). A number of metabolites were found to be perturbed in TASTPM mice in both brain (D11 fructose, L-valine, L-serine, L-threonine, zymosterol) and plasma (D-glucose, D12 galactose, linoleic acid, arachidonic acid, palmitic acid and D-gluconic acid). In addition, enzyme immunoassay confirmed that selected endogenous steroids were significantly perturbed in brain (androstenedione and 17-OH-progesterone) and plasma (cortisol and testosterone) of TASTPM mice. Ingenuity pathway analysis revealed that perturbations related to amino acid metabolism (brain), steroid biosynthesis (brain), linoleic acid metabolism (plasma) and energy metabolism (plasma) accounted for the differentiation of TASTPM and wild-type

  20. Learning Brain Connectivity of Alzheimer's Disease from Neuroimaging Data

    E-Print Network [OSTI]

    Li, Jing

    Learning Brain Connectivity of Alzheimer's Disease from Neuroimaging Data Shui Huang2 , Jing Li2 Recent advances in neuroimaging techniques provide great potentials for effective diagnosis of Alzheimer. In this paper, we consider the problem of learning functional brain connectivity from neuroimaging, which holds

  1. Journal of Alzheimer's Disease xx (20xx) xxx DOI 10.3233/JAD-132483

    E-Print Network [OSTI]

    Mandal, Pravat K.

    and Alzheimer's Disease as isoprostanes, neuroprostanes, acrolein, and hydrox- ynonenal (HNE), have also been

  2. Measuring Dementia of the Alzheimer Type More Precisely

    E-Print Network [OSTI]

    Lowe, Deborah Anne

    2012-11-29T23:59:59.000Z

    Alzheimer’s disease (AD) progressively impairs cognitive and functional abilities. Research on pharmacological treatment of AD is shifting to earlier forms of the disease, including preclinical stages. However, assessment methods traditionally used...

  3. Cyclophilin D Deficiency Rescues Axonal Mitochondrial Transport in Alzheimer’s Neurons

    E-Print Network [OSTI]

    Guo, Lan; Du, Heng; Yan, Shiqiang; Wu, Xiaoping; Mckhann, Guy M.; Chen, John Xi; Yan, Shirley ShiDu

    2013-01-31T23:59:59.000Z

    of synapses relevant to the pathogenesis of Alzheimer’s disease (AD). However, the mechanisms controlling axonal mitochondrial function and transport alterations in AD remain elusive. Here, we report an unexplored role of cyclophilin D (Cyp...

  4. alzheimers disease neuroimaging: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Learning Brain Connectivity of Alzheimer's Disease from Neuroimaging Data Mathematics Websites...

  5. Label-Free Quantitative LC?MS Proteomics of Alzheimer’s Disease and Normally Aged Human Brains

    SciTech Connect (OSTI)

    Andreev, Victor P.; Petyuk, Vladislav A.; Brewer, Heather M.; Karpievitch, Yuliya; Xie, Fang; Clarke, Jennifer; Camp, David G.; Smith, Richard D.; Lieberman, Andrew P.; Albin, Roger L.; Nawaz, Zafar; Hokayem, Jimmy E.; Myers, Amanda J.

    2012-06-17T23:59:59.000Z

    Quantitative proteomics analysis of cortical samples of 10 Alzheimer’s disease (AD) brains versus 10 normally aged brains was performed by following the accurate mass and time tag (AMT) approach with the high resolution LTQ Orbitrap mass spectrometer. More than 1400 proteins were identified and quantitated. A conservative approach of selecting only the consensus results of four normalization methods was suggested and used. A total of 197 proteins were shown to be significantly differentially abundant (p-values <0.05, corrected for multiplicity of testing) in AD versus control brain samples. Thirty-seven of these proteins were reported as differentially abundant or modified in AD in previous proteomics and transcriptomics publications. The rest to the best of our knowledge are new. Mapping of the discovered proteins with bioinformatic tools revealed significant enrichment with differentially abundant proteins of pathways and processes known to be important in AD, including signal transduction, regulation of protein phosphorylation, immune response, cytoskeleton organization, lipid metabolism, energy production, and cell death.

  6. Mapping local hippocampal changes in Alzheimer's disease and normal ageing with MRI at 3 Tesla

    E-Print Network [OSTI]

    Thompson, Paul

    Mapping local hippocampal changes in Alzheimer's disease and normal ageing with MRI at 3 Tesla and Alzheimer's disease based on high resolution MRI at 3 Tesla. T1-weighted images were acquired from 19

  7. Emotion Regulation Deficits in Frontotemporal Lobar Degeneration and Alzheimer's Disease

    E-Print Network [OSTI]

    Levenson, Robert W.

    Emotion Regulation Deficits in Frontotemporal Lobar Degeneration and Alzheimer's Disease Madeleine instructed and spontaneous emotion regulation in patients with frontotemporal lobar degeneration (FTLD, N 32) unwarned without instructions to down-regulate, (b) warned without instructions to down-regulate, and (c

  8. alzheimer disease brain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    alzheimer disease brain First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Brain MRI segmentation for the...

  9. alzheimers disease brain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    alzheimers disease brain First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Brain MRI segmentation for the...

  10. Longitudinal Medication Usage in Alzheimer Disease Patients

    E-Print Network [OSTI]

    on ChEIs.1,5­8 In addition to ChEIs and memantine, AD patients are likely to be prescribed other examined in detail patterns of cholinesterase inhibitors (ChEIs) and memantine use and explored characteristics on ChEIs/ memantine use over time. Independent variables included measures of function, cognition

  11. Motor signs predict poor outcomes in Alzheimer disease

    E-Print Network [OSTI]

    ) in five University-based AD centers in the United States and European Union. Four outcomes, assessed every index, and death. Using a standardized portion of the Unified PD Rating Scale (administered every 6 disease (AD). Methods: A total of 533 patients with AD at early stages (mean Folstein Mini-Mental State

  12. Gist Memory in Alzheimer's Disease: Evidence From Categorized Pictures Andrew E. Budson

    E-Print Network [OSTI]

    Schacter, Daniel

    Gist Memory in Alzheimer's Disease: Evidence From Categorized Pictures Andrew E. Budson Edith of items (gist memory; Reyna & Brainerd, 1995; Schacter, Norman, & Koutstaal, 1998). We have argued

  13. Seropositivity to Herpes Simplex Virus Antibodies and Risk of Alzheimer's Disease: A Population-Based Cohort

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Seropositivity to Herpes Simplex Virus Antibodies and Risk of Alzheimer's Disease: A Population for Studies in Aging, Montreal, Quebec, Canada Abstract Background: Herpes Simplex Virus (HSV) infection has) Seropositivity to Herpes Simplex Virus Antibodies and Risk of Alzheimer's Disease: A Population-Based Cohort

  14. UncorrectedAuthorProof Journal of Alzheimer's Disease xx (20xx) xxx

    E-Print Network [OSTI]

    30 31 Correspondence to: Jesse Mez, Gertrude H. Sergievsky Center, College of Physicians and Surgeons;UncorrectedAuthorProof 2 J. Mez et al. / Language versus Memory Alzheimer's Subgroups tion of patients with AD

  15. Exploration of the role of gangliosides and cholesterol in the mechanism of ?-amyloid neurotoxicity in Alzheimer's disease

    E-Print Network [OSTI]

    Yoo, Suk Joon

    2002-01-01T23:59:59.000Z

    Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to the style and content by: Theresa A. Good (Chair of Committee) Gerard L Cote (Member) David M. Ford (Member7-, , g7..., B. S. , Korea University Chair of Advisory Committee Dr. Theresa A. Good Alzheimer's disease (AD) is the most common form of the dementia in the aging population. p-amylotd peptide (Ap l has been indicated as the most important hallmark of AD...

  16. / www.sciencexpress.org / 9 February 2012/ Page 1 / 10.1126/science.1217697 Alzheimer's disease is associated with impaired clearance

    E-Print Network [OSTI]

    Cavusoglu, Cenk

    by apolipoprotein E (ApoE). ApoE expression is transcriptionally induced through the action of the nuclear receptors of Alzheimer's disease resulted in enhanced clearance of soluble A within hours in an apoE- dependent manner factor for sporadic AD is allelic variation in the apolipoprotein E (APOE) gene. Possession of an APOE4

  17. Nanoimaging to Prevent and Treat Alzheimer’s and Parkinson’s Diseases. Scientific/Technical report

    SciTech Connect (OSTI)

    Yuri L. Lyubchenko, PhD, DSc

    2012-12-20T23:59:59.000Z

    This project will develop innovative approaches to characterization of the very early stages of protein aggregation that eventually can be translated to the development of early diagnostic tools and efficient treatments for Alzheimer’s, Parkinson’s and Huntington’s diseases. Funding will be used to acquire nanoimaging technology for nanoscale imaging, manipulation and analysis of biomedical materials to develop treatments that will repair disabled proteins and cure diseases that result from protein malfunction, specifically Alzheimer’s and Parkinson’s diseases. Expected outcomes include tests for early diagnosis and therapeutic treatments for these devastating neurological diseases. To elucidate the mechanisms of protein misfolding, we will establish an extensive program of experimental studies using a broad arsenal of advanced nanoscale and traditional techniques that will be integrated with molecular-scale modeling of protein misfolding and the nucleation of aggregate structures. To identify intracellular machinery or/and multicomponent complexes critically involved in protein misfolding, we will characterize interactions between targeted proteins and specific intracellular components or metabolites that impact on protein conformational pathways leading to protein misfolding accompanied by formation of toxic aggregated morphologies. To design innovative nanotechnology tools for the control of intracellular protein misfolding and aggregation processes, we will develop a predictive molecular scale model for intracellular protein misfolding and the formation of toxic aggregates. Verified through experimental studies, the objective is to establish an enabling foundation for the engineering of novel molecular diagnostics and therapeutics for various cellular pathologies.

  18. Inflammation as a potential mediator for the association between periodontal disease and Alzheimer’s disease

    E-Print Network [OSTI]

    Watts, Amber; Crimmins, Eileen M.; Gatz, Margaret

    2008-09-10T23:59:59.000Z

    antibodies (Aiello et al 2006). HSV-1 is found in a high proportion of non-AD elderly brains (Jamieson et al 1992) and is most often not found to be associated with dementia. This does not preclude the role of HSV in AD, because presence of a virus... health does not improve despite treatment and proper hygiene, release higher levels of IL-1? and prostaglandin-E2 than patients with non- refractory periodontitis (Hernichel-Gorbach et al 1994). Polymorphisms for genes involved in inflammatory process...

  19. Neuronal networks with coupling through amyloid beta: towards a theory for Alzheimer's disease

    E-Print Network [OSTI]

    V. Resmi; G. Ambika; R. E. Amritkar; G. Rangarajan

    2010-11-18T23:59:59.000Z

    Alzheimer's disease (AD) is a common form of dementia observed in the elderly due to neurodegenerative disorder and dysfunction. This arises from alterations in synaptic functioning of neurons leading to cognitive impairment and memory loss. Recent experimental studies indicate that the amyloid beta (A beta) protein, in its dimer and oligomer forms, affects the synaptic activity of neurons in the early stages of AD. However, the precise mechanism underlying A beta induced synaptic depression is still not clearly understood. In this paper, we introduce an electrical model that provides a possible mechanism for this. Our studies show that the competing effects of synaptic activity and the indirect interaction mediated by A beta, can disrupt the synchrony among neurons and severely affect the neuronal activity. This then leads to sub-threshold activity or synaptic silencing. This is in agreement with the reported disruption of cortical synaptic integration in the presence of A beta in transgenic mice. We suggest that direct electrophysiological measurements of A beta activity can establish its role in AD and the possible revival, proposed in our model. The mechanism proposed here is quite general and could account for the role of the relevant protein in other neuronal disorders also.

  20. DEVELOPMENT OF AUTOMATED SOFTWARE PROGRAM FOR THE ANALYSIS OF ALZHEIMER'S DISEASE BETA-AMYLOID SCANS

    SciTech Connect (OSTI)

    Mariotti, Jack; Zubal, George

    2013-12-18T23:59:59.000Z

    Study goal: A Phase 1 evaluation of the kinetics, clearance and cerebral distribution of one novel peripheral benzodiazepine receptors(PBR)positron emission tomography (PET) imaging agent, 18F-PBR-111 following intravenous administration in healthy volunteers and Alzheimer's disease (AD) patients. Short title: Evaluation of PET imaging with PBR-111 in HV and AD subjects Proof of Mechanism. Primary Objective: To evaluate the cerebral distribution of PBR-111 positron emission tomography (PET) for detection/exclusion of microglial activation in patients with Alzheimer's disease subjects compared to healthy volunteers. Secondary objectives: - To assess the dynamic uptake and washout of [18F]PBR-111, a potential imaging bio-marker for inflammatory changes in brain, using positron emission tomography in subjects with Alzheimer's disease (AD) and healthy volunteers (HV). - To perform blood metabolite characterization of [18F]PBR-111 in subjects with AD and HV to determine the nature of metabolites in assessment of [18F]-PBR-111 as a PET brain imaging agent. Name of radioactive drug substance: PBR-111 Dose(s): The applied PBR-111 radioactive dose will be up to 5.0 mCi, diluted in a maximum of 10 ml of saline. The radioligand will be administered as a slow intravenous bolus injection (i.e., 6 sec/ml) into a large vein (e.g., antecubital vein). Route of administration: Intravenous injection Duration of treatment: Single administration of a diagnostic agent Indication: PBR-111 positron emission tomography (PET) imaging has the potential to detect microglial activation. In the presence of PBR-111 uptake (representative of microglial activation), inflammation in the brain can be detected. Diagnosis and main criteria for inclusion: Study participants will be HVs and patients diagnosed with probable AD. HVs must be 18 years of age (at least four subjects 50 years of age) and have no evidence of cognitive impairment or other neurologic disease by medical history. The lack of cognitive impairment will also be based on a Clinical Dementia Rating (CDR) of 0. Patients with probable AD must be 50 years of age and must fulfill the National Institute of Neurological and Communicative Disorders and Stroke, Alzheimer's Disease and Related Disorders Association [NINCDS-ADRDA] criteria for probable AD. The CDR score must be 1.0 and 2.0 and have a modified Hachinski of 4. All HVs and all patients with probable AD must be able to comply with all study procedures. Study design: This is a Phase 1, open-label, single-center, non-randomized single dose study to assess the kinetics, clearance and cerebral distribution of PBR-111 PET imaging in detecting microglial activation in the brain in patients with probable AD compared to HVs. All aspects related to image acquisition, processing, and visual as well as quantitative evaluation will be developed, optimized, and validated (where required). Each subject will be required to visit the study center during the screening phase and on the PBR-111 PET imaging day (baseline). A telephone follow-up visit will be performed 7 days (± 3 days) after PBR-111 PET administration. At the screening visit, each subject (or caregiver in the case of AD subjects) will be asked to provide written informed consent or assent. During the screening phase (maximum duration of 60 days) subject medical, neurological, and surgical history, clinical assessments, and a neuro-psychiatric evaluation will be performed on all eligible subjects. Subjects will be allowed to leave the center after all evaluations have been completed. During this period an MRI of the brain will be performed during the screening period. If an MRI of the brain has been performed within six months of the imaging visit using the methods described in the protocol, and there has been no medically significant events in the interim, the previous MRI may be used. During the PBR-111 PET imaging day, all subjects will receive a single intravenous injection of PBR-111 and scanning will be performed over a 3.5 hour period. Each subject will have a telephone follow-up 7 da

  1. Introduction Alzheimer's disease (AD) is the most common type of

    E-Print Network [OSTI]

    Appanna, Vasu

    of methionine (MET), 5- hydroxyindoleacetic acid (5-HIAAA), vanillylmandelic acid and xanthosine (8 disturbances in glycolytic glucose breakdown, pyruvate oxidation as well as excessive protein degradation

  2. Introduction Alzheimer's disease (AD) has an apparent multifactoral

    E-Print Network [OSTI]

    Graves, Michael V.

    methylation of proteins, phospholipids, neurotransmitters and nucleic acids. In addition, S,9-11). Transgenic mice homozygously-lacking apolipoprotein E (ApoE-/-; 12-14) undergo markedly more severe oxidative damage and cognitive impairment when maintained on a folate-deficient diet than do normal mice (15

  3. alzheimer disease brains: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Brain MRI segmentation for the longitudinal follow-up of regional atrophy in Alzheimers...

  4. Monte Carlo Simulation of Alzheimer's Disease in the United States: 2010-2060

    E-Print Network [OSTI]

    Feres, Renato

    Monte Carlo Simulation of Alzheimer's Disease in the United States: 2010-2060 Michael Blech concerns facing the United States over the next 50 years. This progressive disease is currently the sixth on the United States population, and second, the simulation models both prevalence and mortality. Both

  5. What do family caregivers of Alzheimer's disease patients desire in smart home technologies? Contrasted results of a wide survey.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 What do family caregivers of Alzheimer's disease patients desire in smart home technologies misuse. Keywords: Smart homes, Dementia care, Alzheimer's disease, Family caregivers, Acceptability. I. Introduction This article presents a survey on the views and perceptions of innovative smart home technologies

  6. Sense of identity in Alzheimer's Disease Sense of identity in advanced Alzheimer's dementia: a cognitive

    E-Print Network [OSTI]

    Boyer, Edmond

    (AD) and if its profile remains the same between two examinations. A specifically designed protocol was administered to 16 AD patients in the mild to severe stages of dementia and to 16 matched healthy controls patients. The patterns of their responses were similar to those of controls, and remained consistent over

  7. Will our final years be golden? Mortality by Alzheimer's disease in the United States

    E-Print Network [OSTI]

    Davis, Mary Ann

    2007-09-17T23:59:59.000Z

    Page A.1 Magnetic Resonance Imaging (MRI) of Brain Atrophy in Alzheimer's Disease........................................................... 125 A.2 Population Pyramid Summary for the United States ............. 126 A.3 Percentage..., Decedents Over Age 60, United States 1998-2002.................................................................... 157 G.2 Frequency of Mortality by Ethnicity in Decedents Over Age 60 in the United States, 1998...

  8. Identifying Alzheimers Disease-Related Brain Regions from Multi-Modality Neuroimaging Data

    E-Print Network [OSTI]

    Li, Jing

    1 Identifying Alzheimers Disease-Related Brain Regions from Multi-Modality Neuroimaging Data using sensitivity and specificity. The fast growing neuroimaging techniques hold great promise.8 Research so far has focused on single neuroimaging modalities. However, as different modalities9 provide complementary

  9. Automated ventricular mapping with multi-atlas fluid image alignment reveals genetic effects in Alzheimer's disease

    E-Print Network [OSTI]

    Thompson, Paul

    in Alzheimer's disease Yi-Yu Chou,a Natasha Leporé,a Greig I. de Zubicaray,b Owen T. Carmichael,c James T. Becker,d Arthur W. Toga,a and Paul M. Thompsona, a Laboratory of Neuro Imaging, Department of Neurology

  10. VENTRICULAR MAPS IN 804 SUBJECTS CORRELATE WITH COGNITIVE DECLINE, CSF PATHOLOGY, AND IMMINENT ALZHEIMER'S DISEASE

    E-Print Network [OSTI]

    Thompson, Paul

    ALZHEIMER'S DISEASE Yi-Yu Chou1 , Natasha Leporé1 , Priya Saharan1 , Sarah K. Madsen1 , Xue Hua1 , Clifford R. Jack2 , Leslie M. Shaw3 , John Q. Trojanowski3 , Michael W. Weiner4 , Arthur W. Toga1 , Paul M

  11. S100 Inhibitors: A New Paradigm for Treating Alzheimer’s Disease

    E-Print Network [OSTI]

    Mathai, David 1991-

    2011-04-27T23:59:59.000Z

    identified, this mechanistic information can be used toward the development of S100 inhibitors that improve memory loss in patients. The availability of novel pharmacological interventions for AD will significantly reduce the monetary and societal impacts...

  12. A State-Wide Research Network for Alzheimer's Disease

    SciTech Connect (OSTI)

    Mintzer, Jacobo E.; Bachman, D. L.; Stuckey, M.; Ebeling, M.; Wagner, M. T.; Evans, W. J.; Hirth, V.; Walker, A.; Joglekar, R.; Faison, W.

    2014-03-13T23:59:59.000Z

    The Specific Aim of the proposal was to develop an administrative structure that will facilitate the development of AD research across the state of SC by providing key services such as (but not limited to) seeking funding research opportunities, financial tracking, regulatory management, central recruitment, training for investigators and coordinators, data collection, data storing, and data processing to researchers across the state.

  13. Longitudinal assessment of global and regional atrophy rates in Alzheimer's disease and dementia with Lewy bodies

    E-Print Network [OSTI]

    Mak, Elijah; Su, Li; Williams, Guy B.; Watson, Rosie

    2015-02-07T23:59:59.000Z

    statistical analysis of atrophy across subjects using SIENAr, an extension of SIENA from the FSL package (Bartsch et al., 2004). Built upon the result of the previous SIENA analy- sis, the edge displacement image was dilated for each subject, trans- formed... with Lewy bodies and Alzheimer3s disease using cortical pattern matching: diagnosis and gender effects. Neuroimage 23 (1), 325–335. http://dx.doi.org/10.1016/j. neuroimage.2004.04.02615325380. Bartsch, A.J., De Stefano, N., Homola, G., Smith, S., 2004...

  14. 3D Local Binary Pattern for PET image classification by SVM Application to early Alzheimer disease diagnosis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    3D Local Binary Pattern for PET image classification by SVM Application to early Alzheimer disease of Fluorodeoxyglucose PET scans might become a possibility to make early diagnosis more efficient. Temporal and parietal lobes are the main location of medical findings. We have clues that in PET images these lobes contain

  15. AUTOMATIC CLASSIFICATION OF ALZHEIMER'S DISEASE VS. FRONTOTEMPORAL DEMENTIA: A SPATIAL DECISION TREE APPROACH WITH FDG-PET

    E-Print Network [OSTI]

    Utah, University of

    TREE APPROACH WITH FDG-PET N. Sadeghi1 , N. L. Foster2 , A. Y. Wang2 , S. Minoshima3 , A. P. Lieberman4 48109 ABSTRACT We introduce a novel approach for the automatic classifica- tion of FDG-PET scans-- Brain imaging, decision tree, FDG-PET, Alzheimer's Disease, Frontotemporal dementia. 1. INTRODUCTION

  16. Optimizing power to track brain degeneration in Alzheimer's disease and mild cognitive impairment with tensor-based morphometry

    E-Print Network [OSTI]

    Thompson, Paul

    . Leow a,b , Yi-Yu Chou a , April J. Ho a , Boris Gutman a , Arthur W. Toga a , Clifford R. Jack Jr d,j , Gene E. Alexander l , Michael W. Weiner i,j,k,l , Paul M. Thompson a, and the Alzheimer's Disease

  17. What Do Family Caregivers of Alzheimer's Disease Patients Desire in Smart Home Technologies?

    E-Print Network [OSTI]

    Rialle, Vincent; Guigui, Carole; Hervé, Christian

    2009-01-01T23:59:59.000Z

    Objectives - The authors' aim was to investigate the representations, wishes, and fears of family caregivers (FCs) regarding 14 innovative technologies (IT) for care aiding and burden alleviation, given the severe physical and psychological stress induced by dementia care, and the very slow uptake of these technologies in our society. Methods - A cluster sample survey based on a self-administered questionnaire was carried out on data collected from 270 families of patients with Alzheimer's disease or related disorders, located in the greater Paris area. Multiple Correspondence Analysis was used in addition to usual statistical tests to identify homogenous FCs clusters concerning the appreciation or rejection of the considered technologies. Results - Two opposite clusters were clearly defined: FCs in favor of a substantial use of technology, and those rather or totally hostile. Furthermore the distributions of almost all the answers of appreciations were U shaped. Significant relations were demonstrated betwee...

  18. Key residues for the oligomerization of A{beta}42 protein in Alzheimer's disease

    SciTech Connect (OSTI)

    Ngo, Sam [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States)] [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States); Guo, Zhefeng, E-mail: zhefeng@ucla.edu [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States)] [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States)

    2011-10-28T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer A{beta} oligomers are neurotoxins and likely the causing agents for Alzheimer's disease. Black-Right-Pointing-Pointer A{beta}42 fusion protein form globular oligomers. Black-Right-Pointing-Pointer A{beta}42 fusion protein oligomers contain SDS-resistant tetramers and hexamers. Black-Right-Pointing-Pointer Cysteine substitutions at residues 31, 32, 34, 39-41 disrupt A{beta}42 oligomerization. -- Abstract: Deposition of amyloid fibrils consisting of amyloid {beta} (A{beta}) protein as senile plaques in the brain is a pathological hallmark of Alzheimer's disease. However, a growing body of evidence shows that soluble A{beta} oligomers correlate better with dementia than fibrils, suggesting that A{beta} oligomers may be the primary toxic species. The structure and oligomerization mechanism of these A{beta} oligomers are crucial for developing effective therapeutics. Here we investigated the oligomerization of A{beta}42 in the context of a fusion protein containing GroES and ubiquitin fused to the N-terminus of A{beta} sequence. The presence of fusion protein partners, in combination with a denaturing buffer containing 8 M urea at pH 10, is unfavorable for A{beta}42 aggregation, thus allowing only the most stable structures to be observed. Transmission electron microscopy showed that A{beta}42 fusion protein formed globular oligomers, which bound weakly to thioflavin T and Congo red. SDS-PAGE shows that A{beta}42 fusion protein formed SDS-resistant hexamers and tetramers. In contrast, A{beta}40 fusion protein remained as monomers on SDS gel, suggesting that the oligomerization of A{beta}42 fusion protein is not due to the fusion protein partners. Cysteine scanning mutagenesis at 22 residue positions further revealed that single cysteine substitutions of the C-terminal hydrophobic residues (I31, I32, L34, V39, V40, and I41) led to disruption of hexamer and tetramer formation, suggesting that hydrophobic interactions between these residues are most critical for A{beta}42 oligomerization.

  19. CD147 is a regulatory subunit of the gamma-secretase complex inAlzheimer's disease amyloid beta-peptide production

    SciTech Connect (OSTI)

    Zhou, Shuxia; Zhou, Hua; Walian, Peter J.; Jap, Bing K.

    2005-04-06T23:59:59.000Z

    {gamma}-secretase is a membrane protein complex that cleaves the {beta}-amyloid precursor protein (APP) within the transmembrane region, following prior processing by {beta}-secretase, producing amyloid {beta}-peptides (A{beta}{sub 40} and A{beta}{sub 42}). Errant production of A{beta}-peptides that substantially increases A{beta}{sub 42} production has been associated with the formation of amyloid plaques in Alzheimer's disease patients. Biophysical and genetic studies indicate that presenilin-1 (Psn-1), which contains the proteolytic active site, and three other membrane proteins, nicastrin (Nct), APH-1, and PEN-2 are required to form the core of the active {gamma}-secretase complex. Here, we report the purification of the native {gamma}-secretase complexes from HeLa cell membranes and the identification of an additional {gamma}-secretase complex subunit, CD147, a transmembrane glycoprotein with two immunoglobulin-like domains. The presence of this subunit as an integral part of the complex itself was confirmed through co-immunoprecipitation studies of the purified protein from HeLa cells and solubilized complexes from other cell lines such as neural cell HCN-1A and HEK293. Depletion of CD147 by RNA interference was found to increase the production of A{beta} peptides without changing the expression level of the other {gamma}-secretase components or APP substrates while CD147 overexpression had no statistically significant effect on amyloid {beta}-peptide production, other {gamma}-secretase components or APP substrates, indicating that the presence of the CD147 subunit within the {gamma}-secretase complex directly down-modulates the production of A{beta}-peptides. {gamma}-secretase was first recognized through its role in the production of the A{beta} peptides that are pathogenic in Alzheimer's disease (AD) (1). {gamma}-secretase is a membrane protein complex with unusual aspartyl protease activity that cleaves a variety of type I membrane proteins, such as APP, CD44, DCC, ErbB4, E-cadherin, LRP, N-cadherin, Nectin-1, and Notch, within their transmembranous regions (2-11); therefore, in addition to its role in AD, {gamma}-secretase has been found to participate in other important biological functions, such as intracellular signaling. {gamma}-secretase processing of APP requires prior removal of a major fragment of the APP extracellular domain (sAPP{sub {beta}}) by {beta}-secretase to yield a membrane bound fragment (APP CTF{sub {beta}}). Subsequent cleavage of this membrane bound fragment by {gamma}-secretase results in the release of the Alzheimer's disease (AD) associated amyloid {beta}-peptides (12). The proteolytic activity of {gamma}-secretase is found not to be critically dependent on the specific sequence, but instead on the size of the extracellular domain (13); such sequence independent characteristics of the substrate are reminiscent of those of the 26S proteasome complex that cleaves substrates in a non-sequence specific manner. {gamma}-secretase is present in almost all animal species, vertebrates and invertebrates; it is expressed in many human organs and tissues.

  20. DOMINO-AD protocol: donepezil and memantine in moderate to severe Alzheimer's disease - a multicentre RCT

    E-Print Network [OSTI]

    Jones, Rob; Sheehan, Bart; Phillips, Patrick; Juszczak, Ed; Adams, Jessica; Baldwin, Ashley; Ballard, Clive; Banerjee, Sube; Barber, Bob; Bentham, Peter; Brown, Richard; Burns, Alistair; Dening, Tom; Findlay, David; Gray, Richard; Griffin, Mary; Holmes, Clive; Hughes, Alan; Jacoby, Robin; Johnson, Tony; Jones, Roy; Knapp, Martin; Lindesay, James; McKeith, Ian; McShane, Rupert; Macharouthu, Ajay; O'Brien, John; Onions, Caroline; Passmore, Peter; Raftery, James; Ritchie, Craig; Howard, Rob; Domino-ad Team

    2009-07-24T23:59:59.000Z

    ) factorial (2 × 2) design, whether there is worthwhile ben- efit for patients, for whom there is uncertainty on whether related quality of life after 12 months compared to those patients continuing on either monotherapy; Trials 2009, 10:57 http... and health related quality of life. Methods Design This is a pragmatic, multicentre, double-blind (with patient, carer, clinician, outcome assessor and investiga- tors blinded), randomized, placebo controlled (double dummy), parallel group, 2 × 2 factorial...

  1. Automatic Classification of Alzheimers Disease vs. Frontotemporal Dementia: A Decision Tree Approach

    E-Print Network [OSTI]

    Utah, University of

    Sadeghi1 , Tolga Tasdizen1 , Norman L. Foster2 , Angela Y. Wang2 , Satoshi Minoshima3 , Andrew P Approach with FDG-PET Neda Sadeghi , Tolga Tasdizen , Norman L. Foster , Angela Y. Wang , Satoshi Minoshima , Andrew P. Lieberman § . School of Computing, University of Utah, Center for Alzheimers Care

  2. A comparative study of synchrony measures for the early diagnosis of Alzheimer's disease based on EEG

    E-Print Network [OSTI]

    Vialatte, François

    Stochastic event synchrony Hilbert transform Wavelet transform It is well known that EEG signals of Alzheimer with an increase of power in the low-frequency range (delta and theta) and a decrease of power in the high. It is noteworthy, however, that those two effects are not always easily detectable: there tends to be large

  3. iCons, 2011 Alzheimers and Aluminum: Lesson Plan

    E-Print Network [OSTI]

    Auerbach, Scott M.

    © iCons, 2011 Alzheimers and Aluminum: Lesson Plan Handouts to explore mechanistic link between Alzheimer's and aluminum 5. Brief proposal expanding Points to Aluminum's Link With Alzheimer's Disease" from 1989. Provide handout

  4. New therapeutic targets in Alzheimer's disease: brain deregulation of calcium and zinc

    E-Print Network [OSTI]

    Corona, C; Pensalfini, A; Frazzini, V; Sensi, S L

    2011-01-01T23:59:59.000Z

    39;s disease: brain deregulation of calcium and zinc [39;s disease: brain deregulation of calcium and zinc39;s disease: brain deregulation of calcium and zinc Gotz

  5. Regional dynamics of -amyloid deposition in healthy elderly, Mild Cognitive Impairment and Alzheimer's disease: a voxelwise PiB-PET longitudinal study

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and Alzheimer's disease: a voxelwise PiB-PET longitudinal study Nicolas Villain1,2,3,4 , Gaël Chételat1 CHU de Caen, U1077, Caen, France 5. Dept of Nuclear Medicine and Centre for PET, Austin Health, VIC;2 Corresponding author: Victor Villemagne, Department of Nuclear Medicine and Centre for PET, Austin Health, 145

  6. Faster Cognitive and Functional Decline in Dysexecutive versus Amnestic Alzheimer's Subgroups: A Longitudinal

    E-Print Network [OSTI]

    : A Longitudinal Analysis of the National Alzheimer's Coordinating Center (NACC) Database Jesse Mez1: A dysexecutive subgroup of AD has a unique disease course in addition to cognitive phenotype. Citation: Mez J June 3, 2013 Copyright: ß 2013 Mez et al. This is an open-access article distributed under the terms

  7. Using yeast to study neurodegenerative diseases : amyloid formation as a protective mechanism and a new Alzheimer's disease model

    E-Print Network [OSTI]

    Treusch, Sebastian

    2011-01-01T23:59:59.000Z

    Numerous neurodegenerative diseases are pathologically characterized by idiosyncratic protein amyloid inclusions. Not surprisingly amyloid fibrils have long been proposed to be the toxic protein species in these neurodegenerative ...

  8. Synchronizing an aging brain: can entraining circadian clocks by food slow Alzheimer's disease?

    E-Print Network [OSTI]

    Kent, Brianne A.

    2014-09-01T23:59:59.000Z

    in the external environment. When the SCN is unable to entrain to light-dark cycles, such as when the SCN is experimentally ablated or an animal is in con- ditions of constant darkness, daylight no longer acts as a zeitgeber and circadian organization gradually... . The behavioral arrhythmia was not due to a failing central clock. If these findings translate to AD patients, then it would suggest that the SCN would stay entrained to daylight while the peripheral rhythms affecting behavior become out of sync. If circadian...

  9. ARTICLE IN PRESS 3 Mapping cortical change in Alzheimer's disease, brain development,

    E-Print Network [OSTI]

    Thompson, Paul

    's disease, schizo- 19 phrenia, normal aging, and abnormal brain development based on 20 imaging data, not seen in individual brain scans, often emerge when 45population-based brain data are averaged School of Medicine, Los Angeles, CA 90095-1769, United States 9 b Child Psychiatry Branch, NIMH, Bethesda

  10. Early Brain Response to Low-Dose Radiation Exposure Involves Molecular Networks and Pathways Associated with Cognitive Functions, Advanced Aging and Alzheimer's Disease

    SciTech Connect (OSTI)

    Lowe, Xiu R; Bhattacharya, Sanchita; Marchetti, Francesco; Wyrobek, Andrew J.

    2008-06-06T23:59:59.000Z

    Understanding the cognitive and behavioral consequences of brain exposures to low-dose ionizing radiation has broad relevance for health risks from medical radiation diagnostic procedures, radiotherapy, environmental nuclear contamination, as well as earth orbit and space missions. Analyses of transcriptome profiles of murine brain tissue after whole-body radiation showed that low-dose exposures (10 cGy) induced genes not affected by high dose (2 Gy), and low-dose genes were associated with unique pathways and functions. The low-dose response had two major components: pathways that are consistently seen across tissues, and pathways that were brain tissue specific. Low-dose genes clustered into a saturated network (p < 10{sup -53}) containing mostly down-regulated genes involving ion channels, long-term potentiation and depression, vascular damage, etc. We identified 9 neural signaling pathways that showed a high degree of concordance in their transcriptional response in mouse brain tissue after low-dose radiation, in the aging human brain (unirradiated), and in brain tissue from patients with Alzheimer's disease. Mice exposed to high-dose radiation did not show these effects and associations. Our findings indicate that the molecular response of the mouse brain within a few hours after low-dose irradiation involves the down-regulation of neural pathways associated with cognitive dysfunctions that are also down regulated in normal human aging and Alzheimer's disease.

  11. Inside Alzheimer's Disease

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of experience, Gonzales is the group's de facto guru. The other three members-Zachary Leonard, Monica Martinez-Archuleta, and Randy Merker-are all former math or science teachers...

  12. This article examines the possible involvement of nutrients in the pathogenesis, prevention, or management of Alzheimer's disease (AD).

    E-Print Network [OSTI]

    Wurtman, Richard

    -enzymatic processes (e.g., acting as antioxidants). This article first considers the evidence that deficiencies subnormal levels of a characteristic peptide, A-beta 1­42, in cerebrospinal fluid (CSF) and abnormal brain

  13. A novel approach to the identification and quantitative elemental analysis of amyloid deposits-Insights into the pathology of Alzheimer's disease

    SciTech Connect (OSTI)

    Rajendran, Reshmi; Minqin, Ren [Centre for Ion Beam Applications, Department of Physics, Blk S 12, Faculty of Science, National University of Singapore, 2, Science Drive 3, Singapore 117542 (Singapore)] [Centre for Ion Beam Applications, Department of Physics, Blk S 12, Faculty of Science, National University of Singapore, 2, Science Drive 3, Singapore 117542 (Singapore); Ynsa, Maria Dolores [Centro de Micro-Analisis de Materiales (CMAM), Universidad Autonoma de Madrid, Campus de Cantoblanco, 28049 Madrid (Spain)] [Centro de Micro-Analisis de Materiales (CMAM), Universidad Autonoma de Madrid, Campus de Cantoblanco, 28049 Madrid (Spain); Casadesus, Gemma [Department of Neurosciences, Case Western Reserve University, Cleveland, OH 44106 (United States)] [Department of Neurosciences, Case Western Reserve University, Cleveland, OH 44106 (United States); Smith, Mark A.; Perry, George [Department of Pathology, Case Western Reserve University, Cleveland, OH 44106 (United States)] [Department of Pathology, Case Western Reserve University, Cleveland, OH 44106 (United States); Halliwell, Barry [Department of Biochemistry, National University of Singapore (Singapore)] [Department of Biochemistry, National University of Singapore (Singapore); Watt, Frank, E-mail: phywattf@nus.edu.sg [Centre for Ion Beam Applications, Department of Physics, Blk S 12, Faculty of Science, National University of Singapore, 2, Science Drive 3, Singapore 117542 (Singapore)] [Centre for Ion Beam Applications, Department of Physics, Blk S 12, Faculty of Science, National University of Singapore, 2, Science Drive 3, Singapore 117542 (Singapore)

    2009-04-24T23:59:59.000Z

    There is considerable interest in the role of metals such as iron, copper, and zinc in amyloid plaque formation in Alzheimer's disease. However to convincingly establish their presence in plaques in vivo, a sensitive technique is required that is both quantitatively accurate and avoids isolation of plaques or staining/fixing brain tissue, since these processes introduce contaminants and redistribute elements within the tissue. Combining the three ion beam techniques of scanning transmission ion microscopy, Rutherford back scattering spectrometry and particle induced X-ray emission in conjunction with a high energy (MeV) proton microprobe we have imaged plaques in freeze-dried unstained brain sections from CRND-8 mice, and simultaneously quantified iron, copper, and zinc. Our results show increased metal concentrations within the amyloid plaques compared with the surrounding tissue: iron (85 ppm compared with 42 ppm), copper (16 ppm compared to 6 ppm), and zinc (87 ppm compared to 34 ppm).

  14. alzheimer type onset: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (up to 80%). The identification of risk factors ... Allen, Mariet 2011-11-25 2 Shift in brain metabolism in late onset Alzheimer's disease: Implications for biomarkers and...

  15. Exploration of the role of gangliosides and cholesterol in the mechanism of ?-amyloid neurotoxicity in Alzheimer's disease 

    E-Print Network [OSTI]

    Yoo, Suk Joon

    2002-01-01T23:59:59.000Z

    to A? toxicity. In this work, we explored the role of gangliosides and cholesterol in the mechanism of A? neurotoxicity in AD. Specifically, we investigated the feasibility that the binding between A? and the cell membrane, which is proposed...

  16. Mitochondrial bioenergetic deficit precedes Alzheimer's pathology in female mouse model

    E-Print Network [OSTI]

    Brinton, Roberta Diaz

    Mitochondrial bioenergetic deficit precedes Alzheimer's pathology in female mouse model and suggests therapeutic targets for prevention of AD. ABAD aging bioenergetics brain hypometabolism mitochondria The essential role of mitochondria in cellular bioenergetics and survival has been well

  17. Neddylation dysfunction in Alzheimer's disease

    E-Print Network [OSTI]

    Chen, Yuzhi

    Ubiquitin-dependent proteolysis is a major mechanism that downregulates misfolded proteins or those that have finished a programmed task. In the last two decades, neddylation has emerged as a major regulatory pathway for ...

  18. ad mild cognitive: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    56, 52-60. space is visualized Wang, Yalin 5 Cognitive and affective theory of mind in mild to moderate Alzheimer's disease Computer Technologies and Information Sciences...

  19. Free membership Agriculture Alzheimer Astronomy

    E-Print Network [OSTI]

    Lovley, Derek

    Membership Free membership signup! Categories Agriculture Alzheimer Astronomy Astrophysics Bacteria that was released to the environment as a result of ore milling, nuclear fuel fabrication or processing activities

  20. Patterns of Cognitive Decline in Alzheimer's Dementia: An Application of Hierarchical Bayesian Multiphase Models

    E-Print Network [OSTI]

    Langford, Zachary Denver

    2012-12-31T23:59:59.000Z

    As the Alzheimer's disease process progresses in time measurements of cognitive functioning exhibit nonlinearity. Multiphase models were used to quantify this nonlinearity for thirty-six well characterized individuals(~12 observations per individual...

  1. Body Composition in Early Alzheimer's Disease

    E-Print Network [OSTI]

    Burns, Jeffrey M.

    2009-01-09T23:59:59.000Z

    measures of memory (WMS-R Logical Memory I and II, Free and Cued Selective Reminding Task), language (Boston Naming Test ? 15 item), working memory (WMS III Digit Span Forwards and Backwards, WAIS Letter-number sequencing), executive function...

  2. Clioquinol promotes the degradation of metal-dependent amyloid-?  (A?) oligomers to restore endocytosis and ameliorate A?  toxicity

    E-Print Network [OSTI]

    Lindquist, Susan

    Alzheimer’s disease (AD) is a common, progressive neurodegenerative disorder without effective disease-modifying therapies. The accumulation of amyloid-? peptide (A?) is associated with AD. However, identifying new compounds ...

  3. RAGE and Alzheimer’s Disease: A Progression Factor for Amyloid-?-Induced Cellular Perturbation?

    E-Print Network [OSTI]

    Yan, Shirley ShiDu; Bierhaus, Angelika; Nawroth, Peter P.; Stern, David M.

    2009-04-01T23:59:59.000Z

    Receptor for Advanced Glycation Endproducts (RAGE) is a multiligand member of the immunoglobulin superfamily of cell surface molecules which serves as a receptor for amyloid-? peptide (A?) on neurons, microglia, astrocytes, ...

  4. Macrophages in Alzheimer’s disease: the blood-borne identity

    E-Print Network [OSTI]

    Gate, David; Rezai-Zadeh, Kavon; Jodry, Dominique; Rentsendorj, Altan; Town, Terrence

    2010-01-01T23:59:59.000Z

    limited capacity to divide (Graeber et al. 1992; Kennedy andImmu- nity 19(1):71–82 Graeber MB, Streit WJ, Buringer D,

  5. Insight into Alzheimer's, cancer, anemia gleaned from ribosome...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Insights from ribosome research Insight into Alzheimer's, cancer, anemia gleaned from ribosome research Groundbreaking study of the human ribosome reveals tiny molecular machine is...

  6. What is new and exciting in Alzheimer's disease research?

    E-Print Network [OSTI]

    Jonsson1 et al., Nature | Letter 2012 1deCODE genetics, 101 Reykjavik, Iceland #12;#12;Alan Turing) at the National Codes Centre at Bletchley Park In 2012 two 70-year-old papers by Alan Turing on the theory of code

  7. alzheimer disease pathology: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and temporomandibular joints resulted in astrocyte and microglial activation in the brain, accompanied by upregulation of inflammation-related gene expression. The biological...

  8. alzheimer disease patients: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lana became her fathers primary caregiver, even as she was starting a career and family. For several years after his diagnosis, Bakers father was able to live in his own...

  9. alzheimers disease patients: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lana became her fathers primary caregiver, even as she was starting a career and family. For several years after his diagnosis, Bakers father was able to live in his own...

  10. alzheimers disease caregivers: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    families what they are doing that merits that designation. She also pushed legislation to protect a couples financial assets when one is receiving Medicaid home- and...

  11. DISEASE-SPECIFIC PROBABILISTIC BRAIN ATLASES

    E-Print Network [OSTI]

    Thompson, Paul

    algorithms for knowledge-based image analysis, automated image labeling, tissue classification, data mining School of Medicine, Los Angeles, CA 2 Alzheimer's Disease Center, UCLA School of Medicine, Los Angeles Westwood Plaza, Los Angeles, CA 90095-1769 Phone: (310) 206-2101 Fax: (310) 206-5518 E-mail: thompson

  12. Supersymmetric Warped AdS in Extended Topologically Massive Supergravity

    E-Print Network [OSTI]

    Nihat Sadik Deger; Ali Kaya; Henning Samtleben; Ergin Sezgin

    2014-05-22T23:59:59.000Z

    We determine the most general form of off-shell N=(1,1) supergravity field configurations in three dimensions by requiring that at least one off-shell Killing spinor exists. We then impose the field equations of the topologically massive off-shell supergravity and find a class of solutions whose properties crucially depend on the norm of the auxiliary vector field. These are spacelike-squashed and timelike-stretched AdS_3 for the spacelike and timelike norms, respectively. At the transition point where the norm vanishes, the solution is null warped AdS_3. This occurs when the coefficient of the Lorentz-Chern-Simons term is related to the AdS radius by $\\mu\\ell=2$. We find that the spacelike-squashed AdS_3 can be modded out by a suitable discrete subgroup of the isometry group, yielding an extremal black hole solution which avoid closed timelike curves.

  13. Adding New Functionality

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1 IntroductionActinideAdding New Functionality When a

  14. Alzheimer caregiving stress and atherosclerotic disease : psychosocial and physiological pathways linking chronic stress to disease

    E-Print Network [OSTI]

    Buehler, Susan Kyung; Buehler, Susan Kyung

    2012-01-01T23:59:59.000Z

    Medicine, 52(3-4), 208-212. O'Leary, D. H. , Polak, J. F. ,A. , Sidney, S. , & O'Leary, D. H. (2010). Segment-specificand myocardial infarction (O'Leary et al. , 1999). Moreover,

  15. Vascular pathology in the aged human brain

    E-Print Network [OSTI]

    Grinberg, Lea Tenenholz; Thal, Dietmar Rudolf

    2010-01-01T23:59:59.000Z

    vascular pathology, and the AD brain. Neurology 65: 259–265brospinal ?uid from the rat brain. Acta Neuropathol (Berl)and Alzheimer’s disease in the brains of elderly individuals

  16. Nanofluidic biosensing for beta-amyloid detection 

    E-Print Network [OSTI]

    Chou, I-Hsien

    2009-05-15T23:59:59.000Z

    A nanofluidic biosensor using surface-enhanced Raman scattering (SERS) was developed to detect the ?-amyloid (A?) protein, one of the biomarkers of Alzheimer’s disease (AD). Recent studies have indicated that investigating changes in relative...

  17. Nanofluidic biosensing for beta-amyloid detection

    E-Print Network [OSTI]

    Chou, I-Hsien

    2009-05-15T23:59:59.000Z

    A nanofluidic biosensor using surface-enhanced Raman scattering (SERS) was developed to detect the ?-amyloid (A?) protein, one of the biomarkers of Alzheimer’s disease (AD). Recent studies have indicated that investigating changes in relative...

  18. Supergravity at the boundary of AdS supergravity

    SciTech Connect (OSTI)

    Amsel, Aaron J.; Compere, Geoffrey [Department of Physics, University of California, Santa Barbara, California 93106 (United States)

    2009-04-15T23:59:59.000Z

    We give a general analysis of AdS boundary conditions for spin-3/2 Rarita-Schwinger fields and investigate boundary conditions preserving supersymmetry for a graviton multiplet in AdS{sub 4}. Linear Rarita-Schwinger fields in AdS{sub d} are shown to admit mixed Dirichlet-Neumann boundary conditions when their mass is in the range 0{<=}|m|<1/2l{sub AdS}. We also demonstrate that mixed boundary conditions are allowed for larger masses when the inner product is 'renormalized' accordingly with the action. We then use the results obtained for |m|=1/l{sub AdS} to explore supersymmetric boundary conditions for N=1 AdS{sub 4} supergravity in which the metric and Rarita-Schwinger fields are fluctuating at the boundary. We classify boundary conditions that preserve boundary supersymmetry or superconformal symmetry. Under the AdS/CFT dictionary, Neumann boundary conditions in d=4 supergravity correspond to gauging the superconformal group of the three-dimensional CFT describing M2-branes, while N=1 supersymmetric mixed boundary conditions couple the CFT to N=1 superconformal topologically massive gravity.

  19. New Massive Gravity and AdS_4 counterterms

    E-Print Network [OSTI]

    Dileep P. Jatkar; Aninda Sinha

    2011-04-06T23:59:59.000Z

    We show that the recently proposed DBI extension of new massive gravity emerges naturally as a counterterm in AdS$_4$. The resulting on-shell Euclidean action is independent of the cut-off at zero temperature. We also find that the same choice of counterterm gives the usual area law for the AdS$_4$ Schwarzschild black hole entropy in a cut-off independent manner. The parameter values of the resulting counterterm action correspond to a $c=0$ theory in the context of AdS$_3$/CFT$_2$. We rewrite this theory in terms of the gauge field that is used to recast 3D gravity as a Chern-Simons theory.

  20. Branes in AdS and pp-wave spacetimes

    E-Print Network [OSTI]

    Kostas Skenderis; Marika Taylor

    2002-07-03T23:59:59.000Z

    We find half supersymmetric AdS-embeddings in AdS_5 x S^5 corresponding to all quarter BPS orthogonal intersections of D3-branes with Dp-branes. A particular case is the Karch-Randall embedding AdS_4 x S^2. We explicitly prove that these embeddings are supersymmetric by showing that the kappa symmetry projections are compatible with half of the target space Killing spinors and argue that all these cases lead to AdS/dCFT dualities involving a CFT with a defect. We also find an asymptotically AdS_4 x S^2 embedding that corresponds to a holographic RG-flow on the defect. We then consider the pp-wave limit of the supersymmetric AdS-embeddings and show how it leads to half supersymmetric D-brane embeddings in the pp-wave background. We systematically analyze D-brane embeddings in the pp-wave background along with their supersymmetry. We construct all supersymmetric D-branes wrapped along the light-cone using operators in the dual gauge theory: the open string states are constructed using defect fields. We also find supersymmetric D1 (monopoles) and D3 (giant gravitons) branes that wrap only one of the light-cone directions. These correspond to non-perturbative states in the dual gauge theory.

  1. Neuronal Protection by a Novel C-terminal Hsp90 Modulator

    E-Print Network [OSTI]

    Menchen, Heather Ann

    2012-08-31T23:59:59.000Z

    Alzheimer's disease (AD), like most neurodegenerative disorders, is characterized by accumulation of misfolded and aggregated proteins, indicating that the protein quality control machinery is compromised. Enhancing the ...

  2. Statistical shape analysis of neuroanatomical structures based on spherical wavelet transformation

    E-Print Network [OSTI]

    Yu, Peng, Ph. D. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Evidence suggests that morphological changes of neuroanatomical structures may reflect abnormalities in neurodevelopment, or relate to a variety of disorders, such as schizophrenia and Alzheimer's disease (AD). Advances ...

  3. Wilson lines for AdS_5 black strings

    E-Print Network [OSTI]

    Kiril Hristov; Stefanos Katmadas

    2014-12-03T23:59:59.000Z

    We describe a simple method of extending AdS_5 black string solutions of 5d gauged supergravity in a supersymmetric way by addition of Wilson lines along a circular direction in space. When this direction is chosen along the string, and due to the specific form of 5d supergravity that features Chern-Simons terms, the existence of magnetic charges automatically generates conserved electric charges in a 5d analogue of the Witten effect. Therefore we find a rather generic, model-independent way of adding electric charges to already existing solutions with no backreaction from the geometry or breaking of any symmetry. We use this method to explicitly write down more general versions of the Benini-Bobev black strings and comment on the implications for the dual field theory and the similarities with generalizations of the Cacciatori-Klemm black holes in AdS_4.

  4. Lorentzian AdS geometries, wormholes, and holography

    SciTech Connect (OSTI)

    Arias, Raul E.; Silva, Guillermo A. [IFLP-CONICET and Departamento de Fisica Facultad de Ciencias Exactas, Universidad Nacional de La Plata , CC 67, 1900, La Plata (Argentina); Botta Cantcheff, Marcelo [Theory Division, CERN, 1211 Geneva 23 (Switzerland); IFLP-CONICET and Departamento de Fisica Facultad de Ciencias Exactas, Universidad Nacional de La Plata , CC 67, 1900, La Plata (Argentina)

    2011-03-15T23:59:59.000Z

    We investigate the structure of two-point functions for the quantum field theory dual to an asymptotically Lorentzian Anti de Sitter (AdS) wormhole. The bulk geometry is a solution of five-dimensional second-order Einstein-Gauss-Bonnet gravity and causally connects two asymptotically AdS spacetimes. We revisit the Gubser-Klebanov-Polyakov-Witten prescription for computing two-point correlation functions for dual quantum field theories operators O in Lorentzian signature and we propose to express the bulk fields in terms of the independent boundary values {phi}{sub 0}{sup {+-}} at each of the two asymptotic AdS regions; along the way we exhibit how the ambiguity of normalizable modes in the bulk, related to initial and final states, show up in the computations. The independent boundary values are interpreted as sources for dual operators O{sup {+-}} and we argue that, apart from the possibility of entanglement, there exists a coupling between the degrees of freedom living at each boundary. The AdS{sub 1+1} geometry is also discussed in view of its similar boundary structure. Based on the analysis, we propose a very simple geometric criterion to distinguish coupling from entanglement effects among two sets of degrees of freedom associated with each of the disconnected parts of the boundary.

  5. Jet Quenching via Gravitational Radiation in Thermal AdS

    E-Print Network [OSTI]

    Edward Shuryak; Ho-Ung Yee; Ismail Zahed

    2011-10-04T23:59:59.000Z

    We argue that classical bulk gravitational radiation effects in AdS/CFT, previously ignored because of their subleading nature in the 1/Nc-expansion, are magnified by powers of large Lorentz factors gamma for ultrarelativistic jets, thereby dominating other forms of jet energy loss in holography at finite temperature. We make use of the induced gravitational self-force in thermal AdS5 to estimate its effects. In a thermal medium, relativistic jets may loose most of their energy through longitudinal drag caused by the energy accumulated in their nearby field as they zip through the strongly coupled plasma.

  6. AdS_6 solutions of type II supergravity

    E-Print Network [OSTI]

    Fabio Apruzzi; Marco Fazzi; Achilleas Passias; Dario Rosa; Alessandro Tomasiello

    2015-02-28T23:59:59.000Z

    Very few AdS_6 x M_4 supersymmetric solutions are known: one in massive IIA, and two IIB solutions dual to it. The IIA solution is known to be unique; in this paper, we use the pure spinor approach to give a classification for IIB supergravity. We reduce the problem to two PDEs on a two-dimensional space Sigma. M_4 is then a fibration of S^2 over Sigma; the metric and fluxes are completely determined in terms of the solution to the PDEs. The results seem likely to accommodate near-horizon limits of (p,q)-fivebrane webs studied in the literature as a source of CFT_5's. We also show that there are no AdS_6 solutions in eleven-dimensional supergravity.

  7. AdS_6 solutions of type II supergravity

    E-Print Network [OSTI]

    Fabio Apruzzi; Marco Fazzi; Achilleas Passias; Dario Rosa; Alessandro Tomasiello

    2015-04-03T23:59:59.000Z

    Very few AdS_6 x M_4 supersymmetric solutions are known: one in massive IIA, and two IIB solutions dual to it. The IIA solution is known to be unique; in this paper, we use the pure spinor approach to give a classification for IIB supergravity. We reduce the problem to two PDEs on a two-dimensional space Sigma. M_4 is then a fibration of S^2 over Sigma; the metric and fluxes are completely determined in terms of the solution to the PDEs. The results seem likely to accommodate near-horizon limits of (p,q)-fivebrane webs studied in the literature as a source of CFT_5's. We also show that there are no AdS_6 solutions in eleven-dimensional supergravity.

  8. The Mixed Phase of Charged AdS Black holes

    E-Print Network [OSTI]

    Piyabut Burikham; Chatchai Promsiri

    2015-01-20T23:59:59.000Z

    We study the mixed phase of charged AdS black hole and radiation when the total energy is fixed below the threshold to produce a stable charged black hole branch. The coexistence conditions for the charged AdS black hole and radiation are derived for the generic case when radiation particles carry charge. The phase diagram of the mixed phase is demonstrated for both fixed potential and charge ensemble. In the dual gauge picture, they correspond to the mixed phase of quark-gluon plasma~(QGP) and hadron gas in the fixed chemical potential and density ensemble respectively. In the nuclei and heavy ion collisions at intermediate energies, the mixed phase of exotic QGP and hadron gas could be produced. The mixed phase will condensate and evaporate into the hadron gas as the fireball expands.

  9. Higher derivative effects for 4d AdS gravity

    E-Print Network [OSTI]

    Jelena Smolic; Marika Taylor

    2013-02-13T23:59:59.000Z

    Motivated by holography, we explore higher derivative corrections to four-dimensional Anti-de Sitter (AdS) gravity. We point out that in such a theory the variational problem is generically not well-posed given only a boundary condition for the metric. However, when one evaluates the higher derivative terms perturbatively on a leading order Einstein solution, the equations of motion are always second order and therefore the variational problem indeed requires only a boundary condition for the metric. The equations of motion required to compute the spectrum around the corrected background are still generically higher order, with the additional boundary conditions being associated with new operators in the dual conformal field theory. We discuss which higher derivative curvature invariants are expected to arise in the four-dimensional action from a top-down perspective and compute the corrections to planar AdS black holes and to the spectrum around AdS in various cases. Requiring that the dual theory is unitary strongly constrains the higher derivative terms in the action, as the operators associated with the extra boundary conditions generically have complex conformal dimensions and non-positive norms.

  10. Quintessence and effective AdS brane geometries

    E-Print Network [OSTI]

    K. Priyabrat Pandey; Abhishek K. Singh; Sunita Singh; Supriya Kar

    2014-07-25T23:59:59.000Z

    A geometric torsion dynamics leading to an effective curvature in a second order formalism on a D4-brane is revisited with a renewed interest. We obtain two effective $AdS_4$ brane geometries on a vacuum created pair of $(D{\\bar D})_3$-brane. One of them is shown to describe an AdS Schwarzschild spinning black hole and the other is shown to describe a spinning black hole bound state. It is argued that a D-instanton in a vacuum created anti D3-brane within a pair may describe a quintessence. It may seen to incorporate a varying vacuum energy density in a brane universe. We consider the effective curvature scalar on $S^1\\times S^1$ to analyze torsion-less geometries on a vacuum created pair of $(D{\\bar D})_2$-brane. The emergent $AdS_3$ brane is shown to describe a Schwarzschild and a Reissner-Nordstrom (RN) geometries in presence of extra dimension(s).

  11. Quantum strings in AdS5 x S5 and AdS/CFT duality

    E-Print Network [OSTI]

    A. A. Tseytlin

    2009-09-23T23:59:59.000Z

    We review some recent progress in understanding the spectrum of energies/dimensions of strings/operators in AdS5 x S5 -- planar N=4 super Yang-Mills correspondence. We consider leading strong coupling corrections to the energy of lightest massive string modes in AdS5 x S5, which should be dual to members of the Konishi operator multiplet in the SYM theory. This determines the general structure of strong-coupling expansion of the anomalous dimension of the Konishi operator. Following arXiv:0906.4294 we use 1-loop results for semiclassical string states to extract information about the leading coefficients in this expansion.

  12. AdS String: Classical Solutions and Moduli Dynamics

    E-Print Network [OSTI]

    Antal Jevicki; Kewang Jin

    2010-01-29T23:59:59.000Z

    We review some recent work and techniques for constructing dynamical string solutions in AdS spacetime. These solutions generalize the folded string and multi-spike solutions of GKP and Kruczenski. The methods developed for constructing these dynamical solutions are based on Pohlmeyer reduction to integrable sinh-Gordon type equations. The integrability of the equations is seen as the crucial tool for reconstruction of the string configurations. We discuss the physical meaning of these dynamical spike solutions and the question of their moduli space.

  13. AdS Chern-Simons Gravity induces Conformal Gravity

    E-Print Network [OSTI]

    Rodrigo Aros; Danilo E. Diaz

    2013-12-25T23:59:59.000Z

    The leitmotif of this paper is the question of whether four- and higher even-dimensional Conformal Gravities do have a Chern-Simons pedigree. We show that Weyl gravity can be obtained as dimensional reduction of a five-dimensional Chern-Simons action for a suitable (gauged-fixed, tractor-like) five-dimensional AdS connection. The gauge-fixing and dimensional reduction program admits a readily generalization to higher dimensions for the case of certain conformal gravities obtained by contractions of the Weyl tensor.

  14. Entanglement Entropy and Duality in AdS(4)

    E-Print Network [OSTI]

    Ioannis Bakas; Georgios Pastras

    2015-03-02T23:59:59.000Z

    Small variations of the entanglement entropy \\delta S and the expectation value of the modular Hamiltonian \\delta E are computed holographically for circular entangling curves in the boundary of AdS(4), using gravitational perturbations with general boundary conditions in spherical coordinates. Agreement with the first law of thermodynamics, \\delta S = \\delta E, requires that the line element of the entangling curve remains constant. In this context, we also find a manifestation of electric-magnetic duality for the entanglement entropy and the corresponding modular Hamiltonian, following from the holographic energy-momentum/Cotton tensor duality.

  15. Entanglement Entropy and Duality in AdS(4)

    E-Print Network [OSTI]

    Bakas, Ioannis

    2015-01-01T23:59:59.000Z

    Small variations of the entanglement entropy \\delta S and the expectation value of the modular Hamiltonian \\delta E are computed holographically for circular entangling curves in the boundary of AdS(4), using gravitational perturbations with general boundary conditions in spherical coordinates. Agreement with the first law of thermodynamics, \\delta S = \\delta E, requires that the line element of the entangling curve remains constant. In this context, we also find a manifestation of electric-magnetic duality for the entanglement entropy and the corresponding modular Hamiltonian, following from the holographic energy-momentum/Cotton tensor duality.

  16. Entanglement Entropy and Duality in AdS(4)

    E-Print Network [OSTI]

    Ioannis Bakas; Georgios Pastras

    2015-04-30T23:59:59.000Z

    Small variations of the entanglement entropy \\delta S and the expectation value of the modular Hamiltonian \\delta E are computed holographically for circular entangling curves in the boundary of AdS(4), using gravitational perturbations with general boundary conditions in spherical coordinates. Agreement with the first law of thermodynamics, \\delta S = \\delta E, requires that the line element of the entangling curve remains constant. In this context, we also find a manifestation of electric-magnetic duality for the entanglement entropy and the corresponding modular Hamiltonian, following from the holographic energy-momentum/Cotton tensor duality.

  17. Scattering States in AdS/CFT

    SciTech Connect (OSTI)

    Fitzpatrick, A.Liam; /Boston U.; Kaplan, Jared; /SLAC

    2012-02-14T23:59:59.000Z

    We show that suitably regulated multi-trace primary states in large N CFTs behave like 'in' and 'out' scattering states in the flat-space limit of AdS. Their transition matrix elements approach the exact scattering amplitudes for the bulk theory, providing a natural CFT definition of the flat space S-Matrix. We study corrections resulting from the AdS curvature and particle propagation far from the center of AdS, and show that AdS simply provides an IR regulator that disappears in the flat space limit.

  18. Small Hairy Black Holes in Global AdS Spacetime

    E-Print Network [OSTI]

    Pallab Basu; Jyotirmoy Bhattacharya; Sayantani Bhattacharyya; R. Loganayagam; Shiraz Minwalla; V. Umesh

    2010-05-16T23:59:59.000Z

    We study small charged black holes in global AdS spacetime in the presence of a charged massless minimally coupled scalar field. In a certain parameter range these black holes suffer from well known superradiant instabilities. We demonstrate that the end point of the resultant tachyon condensation process is a hairy black hole which we construct analytically in a perturbative expansion in the black hole radius. At leading order our solution is a small undeformed RNAdS black hole immersed into a charged scalar condensate that fills the AdS `box'. These hairy black hole solutions appear in a two parameter family labelled by their mass and charge. Their mass is bounded from below by a function of their charge; at the lower bound a hairy black hole reduces to a regular horizon free soliton which can also be thought of as a nonlinear Bose condensate. We compute the microcanonical phase diagram of our system at small mass, and demonstrate that it exhibits a second order `phase transition' between the RNAdS black hole and the hairy black hole phases.

  19. AdS/Ricci-flat correspondence

    E-Print Network [OSTI]

    Marco M. Caldarelli; Joan Camps; Blaise Goutéraux; Kostas Skenderis

    2014-04-18T23:59:59.000Z

    We present a comprehensive analysis of the AdS/Ricci-flat correspondence, a map between a class of asymptotically locally AdS spacetimes and a class of Ricci-flat spacetimes. We provide a detailed derivation of the map, discuss a number of extensions and apply it to a number of important examples, such as AdS on a torus, AdS black branes and fluids/gravity metrics. In particular, the correspondence links the hydrodynamic regime of asymptotically flat black $p$-branes or the Rindler fluid with that of AdS. It implies that this class of Ricci-flat spacetimes inherits from AdS a generalized conformal symmetry and has a holographic structure. We initiate the discussion of holography by analyzing how the map acts on boundary conditions and holographic 2-point functions.

  20. Social Media Ad Metrics Definitions

    E-Print Network [OSTI]

    Collins, Gary S.

    these metrics to encourage growth through consistency. Social media speaks to a new way of understanding howSocial Media Ad Metrics Definitions Released May 2009 #12;Social Media Metrics Definitions © 2008 & Social Media Committee. About the IAB's User-Generated Content & Social Media Committee: The User

  1. Adding Value to Agricultural Products

    E-Print Network [OSTI]

    Anderson, David P.; Hanselka, Daniel

    2009-06-01T23:59:59.000Z

    and some of the viscera into menudo or tripas. Booker Packing Company, Caviness Packing Company and J&B Foods are some of the compa- nies adding value to meat successfully in spite of processing costs. A recent survey of such companies indicated...

  2. Matching of correlators in AdS_3/CFT_2

    E-Print Network [OSTI]

    Marika Taylor

    2007-09-12T23:59:59.000Z

    Recently exact agreement has been found between three-point correlators of chiral operators computed in string theory on AdS_3 x S^3 x T^4 with NS-NS flux and those computed in the symmetric orbifold CFT. However, it has also been shown that these correlators disagree with those computed in supergravity, under any identification of single particle operators which respects the symmetries. In this note we resolve this disagreement: the key point is that mixings with multi-particle operators are not suppressed even at large N in extremal correlators. Allowing for such mixings, orbifold/string theory operators and supergravity operators can be matched such that both non-extremal and extremal three point functions agree, giving further evidence for the non-renormalization of the chiral ring.

  3. AdS strings with torsion: Noncomplex heterotic compactifications

    SciTech Connect (OSTI)

    Frey, Andrew R.; Lippert, Matthew [California Institute of Technology, Mail Code 452-48, Pasadena, California 91125 (United States); University of Kentucky, Lexington, Kentucky 40506, USA and University of Louisville, Louisville, Kentucky 40292 (United States)

    2005-12-15T23:59:59.000Z

    Combining the effects of fluxes and gaugino condensation in heterotic supergravity, we use a ten-dimensional approach to find a new class of four-dimensional supersymmetric AdS{sub 4} compactifications on almost-Hermitian manifolds of SU(3) structure. Computation of the torsion allows a classification of the internal geometry, which for a particular combination of fluxes and condensate, is nearly Kaehler. We argue that all moduli are fixed, and we show that the Kaehler potential and superpotential proposed in the literature yield the correct AdS{sub 4} radius. In the nearly Kaehler case, we are able to solve the H Bianchi identity using a nonstandard embedding. Finally, we point out subtleties in deriving the effective superpotential and understanding the heterotic supergravity in the presence of a gaugino condensate.

  4. The Analytic Bootstrap and AdS Superhorizon Locality

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan; David Poland; David Simmons-Duffin

    2013-01-24T23:59:59.000Z

    We take an analytic approach to the CFT bootstrap, studying the 4-pt correlators of d > 2 dimensional CFTs in an Eikonal-type limit, where the conformal cross ratios satisfy |u| 2\\Delta_\\phi + 2n for each integer n as l -> infinity. We show how the rate of approach is controlled by the twist and OPE coefficient of the leading twist operator in the \\phi x \\phi OPE, and we discuss SCFTs and the 3d Ising Model as examples. Additionally, we show that the OPE coefficients of other large spin operators appearing in the OPE are bounded as l -> infinity. We interpret these results as a statement about superhorizon locality in AdS for general CFTs.

  5. Vortex hair on AdS black holes

    E-Print Network [OSTI]

    Gregory, Ruth; Kubiznak, David; Mann, Robert B; Wills, Danielle

    2014-01-01T23:59:59.000Z

    We analyse vortex hair for charged rotating asymptotically AdS black holes in the abelian Higgs model. We give analytical and numerical arguments to show how the vortex interacts with the horizon of the black hole, and how the solution extends to the boundary. The solution is very close to the corresponding asymptotically flat vortex, once one transforms to a frame that is non-rotating at the boundary. We show that there is a Meissner effect for extremal black holes, with the vortex flux being expelled from sufficiently small black holes. The phase transition is shown to be first order in the presence of rotation, but second order without rotation. We comment on applications to holography.

  6. Crude caffeine reduces memory impairment and amyloid b142 levels in an Alzheimer's mouse model

    E-Print Network [OSTI]

    Lockery, Shawn

    Crude caffeine reduces memory impairment and amyloid b1­42 levels in an Alzheimer's mouse model Yi the elderly. Crude caffeine (CC), a major by-product of the decaffeination of coffee, has potent hydrophilic

  7. Alzheimer's amyloid-? and the disordered structural ensemble characterized using molecular dynamics and NMR spectroscopy

    E-Print Network [OSTI]

    Ball, Katherine Aurelia

    2013-01-01T23:59:59.000Z

    NL et al. (2008) Structure and dynamics of the Abeta(21-30)study of the structure and dynamics of the Alzheimer'sShaw DE (2012) Structure and dynamics of an unfolded protein

  8. Frontiers in Disease Therapies UCSB's integration of critical aspects of biological engineering (drug delivery, systems biology, biomateri-

    E-Print Network [OSTI]

    Akhmedov, Azer

    the many diseases that UCSB has cross-disciplinary efforts in, including cancer, diabetes, PTSD, Alzheimer targeting therapeutics to cancer cells while sparing healthy ones. In cancer and diabetes, another failure diabetic patients using closed-loop devices in clinical trials. For more insight into our approach

  9. AEI-2008-085 The Classical Exchange Algebra of AdS5 S5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    AEI-2008-085 The Classical Exchange Algebra of AdS5 × S5 String Theory Marc Magro Universit´e de matrix of AdS5× S5 string theory in the Green-Schwarz formulation is determined by using a first the pure spinor description of AdS5 × S5 string theory. These results are compared to the one obtained by A

  10. On Rotating and Oscillating Four-Spin Strings in AdS5 X S5

    E-Print Network [OSTI]

    Kamal L. Panigrahi; Pabitra M. Pradhan

    2012-10-26T23:59:59.000Z

    We study rigidly rotating strings in AdS5 X S5 background with one spin along AdS5 and three angular momenta along S5. We find dispersion relations among various charges and interpret them as giant magnon and spiky string solutions in various limits. Further we present an example of oscillating string which oscillates in the radial direction of the AdS5 and at the same time rotates in S5.

  11. On Rotating and Oscillating Four-Spin Strings in AdS5 X S5

    E-Print Network [OSTI]

    Panigrahi, Kamal L

    2012-01-01T23:59:59.000Z

    We study rigidly rotating strings in AdS5 X S5 background with one spin along AdS5 and three angular momenta along S5. We find dispersion relations among various charges and interpret them as giant magnon and spiky string solutions in various limits. Further we present an example of oscillating string which oscillates in the radial direction of the AdS5 and at the same time rotates in S5.

  12. Kaolin AD | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInteriasIowa: EnergyKanabec County,Kaolin AD Jump to: navigation,

  13. Fermilab Today - Classified Ad Policy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. CategoryFebruaryFebruaryInThe, 2015 spacer7,, 20150,2,Aug.Ad

  14. Fermilab Today | Classifieds Ad Form

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. CategoryFebruaryFebruaryInThe, 2015Ads Subscribe |

  15. Genetic Studies of Complex Human Diseases: Characterizing SNP-Disease Associations Using Bayesian Networks

    E-Print Network [OSTI]

    Han, Bing; Chen, Xue-wen; Talebizadeh, Zohreh; Xu, Hua

    2012-12-17T23:59:59.000Z

    (Suppl 3):S14 http://www.biomedcentral.com/1752-0509/6/S3/S14 © 2012 Han et al.; licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2...) heuristic search method can solve the classical XOR (Exclusive or) pro- blem [14]. We apply the EpiBN method to simulated datasets based on four disease models and three real datasets: Age-related Macular Degeneration (AMD) dataset, late-onset Alzheimer...

  16. Adding structure to agent programming languages

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Zachmann (Computer Graphics) #12;Adding structure to agent programming languages Peter Novák, Jürgen Dix

  17. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    a kinetic microarray, similar to how gene expression levelsof gene expression (1, 13-19). The tracer kinetic method is

  18. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    via inhalation into the lungs, direct injection into thebilateral metastasis to the lung (arrow) from a previousproduces poor images of the lung, is not able to show

  19. Estrogen regulation of glucose metabolism and mitochondrial function: Therapeutic implications for prevention of Alzheimer's disease

    E-Print Network [OSTI]

    Brinton, Roberta Diaz

    glycolysis and citric acid cycle-driven oxidative phosphorylation and ATP generation. Data derived from, enhanced glycolysis coupled to the citric acid cycle (aerobic glycolysis), sustained and enhanced glycolysis (oxidative phosphorylation coupled to pyruvate metabolism). The enhanced aerobic glycolysis

  20. DNA methylation map of mouse and human brain identifies target genes in Alzheimer's disease

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    al. Figure 3 Epigenetic deregulation of target genes in the3027 Figure 2 Epigenetic deregulation of target genes in

  1. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    AB, Elson LM. The human brain coloring book. 1st ed. New21. Toga AW, Mazziotta JC. Brain mapping : the systems. SanSR, Phelps ME. Imaging Brain Function with Positron Emission

  2. DNA methylation map of mouse and human brain identifies target genes in Alzheimer's disease

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    PLoS One 2009; 2: e895. Song CX, Szulwach KE, Fu Y, Dai Q,Szulwach KE, Li X, Li Y, Song CX, Wu H, Dai Q, et al. 5-hmC-cells), cerebral cortex (CX, CA1, CA3 and den- tate gyrus)

  3. MCI CONFERENCE PAPER HORMONAL TREATMENT, MILD COGNITIVE IMPAIRMENT, AND ALZHEIMER'S DISEASE

    E-Print Network [OSTI]

    Boyer, Edmond

    lost at menopause would prevent many of the manifestations of aging, including osteoporosis on the neurotransmitter systems implicated in cognition. Recent hormonal replacement therapy trials in non- demented post-menopausal to the widespread use of Hormone Replacement Therapy (HT) after the menopause, but following the recent publication

  4. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    HC, Ysaguirre T, inventors; Siemens Medical Solutions USA,HC, Ysaguirre T, inventors; Siemens Medical Solutions USA,ECAT EXACT HR+ PET scanner (Siemens/CTI, Inc. ) consists of

  5. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    of tumors with only modest increases in glucose metabolism (of tumors with only modest increases in glucose metabolism,

  6. Multiple Events Lead to Dendritic Spine Loss in Triple Transgenic Alzheimer's Disease Mice

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    amyloid deposition leads to local synaptic abnormalities andMultiple Events Lead to Dendritic Spine Loss in Tripleal. (2010) Multiple Events Lead to Dendritic Spine Loss in

  7. APOE associated hemispheric asymmetry of entorhinal cortical thickness in aging and Alzheimer's disease

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    with developmental dyslexia. Brain and Language 39, 289–301.asymmetry reductions in dyslexia patients or gender-

  8. Microstructural white matter changes in Alzheimer's disease : a diffusion tensor imaging study

    E-Print Network [OSTI]

    Horne, Nikki Renee

    2008-01-01T23:59:59.000Z

    CP = cerebral peduncles, FSRP = Framingham Stroke Riskimaging FOV field of view FSRP Framingham Stroke RiskStroke Risk Profile (FSRP, D'Agostino, Wolf, Belanger, &

  9. Multiple Events Lead to Dendritic Spine Loss in Triple Transgenic Alzheimer's Disease Mice

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    Simon M. Ochs 1 , Nadine Hoffmann 1 , Gerda Mitteregger 1 ,M, Burgold S, Ochs SM, Hoffmann N, et al. (2010) Multiple

  10. Targeting the brain : identifying and inhibiting harmful protein-amyloid interactions in Alzheimer's disease

    E-Print Network [OSTI]

    Habib, Lila K.

    2011-01-01T23:59:59.000Z

    dishes (MatTek Co. , Ashland, MA) and incubated overnight.collagen (MatTek Co. , Ashland, MA) and incubated overnightdishes (MatTek Co. , Ashland, MA) and incubated overnight.

  11. Associations between potentially modifiable risk factors and Alzheimer's disease: A Mendelian random

    E-Print Network [OSTI]

    Østergaard, Søren D.; Mukherjee, Shubhabrata; Sharp, Stephen J.; Proitsi, Petroula; Lotta, Luca A.; Day, Felix; Perry, John R. B.; Boehme, Kevin L.; Walter, Stefan; Kauwe, John S.; Gibbons, Laura E.; Alzheimer’s Disease Genetics Consortium; The Genetic and Environmental Risk in AD Consortium; The EPIC-InterAct consortium; Larson, Eric B.; Powell, John F.; Laugenberg, Claudia; Crane, Paul K.; Wareham, Nicholas J.; Scott, Robert A.

    2015-06-09T23:59:59.000Z

    of insulin resistance and body fat distribution in type 2 diabetes, independently of obesity. Diabetes. 2014. 16. Speliotes EK, Willer CJ, Berndt SI, Monda KL, Thorleifsson G, Jackson AU, et al. Association analyses of 249,796 individuals reveal 18 new... with autopsy-confirmed diagnosis and no clinical diagnosis, the age at death was used for age at diagnosis. For all studies, the age used for CNEs was the age of last exam or age at death for those for whom age at exam was not available. Case and CNE subjects...

  12. A Novel Sensitive Method of Detecting Mnemonic Decline in Mouse Model of Alzheimer's Disease

    E-Print Network [OSTI]

    Simmons, Rebecca

    2011-01-11T23:59:59.000Z

    in initial discrimination learning or on the ability to ransfer this learned information to the altered context. In contrast, at 12 months of age, APP+PS1 mice learned the initial concurrent discriminations on par with iv NTgs but were impaired when... involves nondemented patients on a series of eight concurrent discriminations with each pair consisting of two objects that vary in color or two colors that vary in shape. Therefore, each pair consists of a relevant and irrelevant feature. Patients...

  13. In Vivo Characterization of CLR01, an Aggregation and Toxicity Inhibitor, with an Alzheimer's Disease Focus

    E-Print Network [OSTI]

    Attar, Aida

    2013-01-01T23:59:59.000Z

    structural basis of protein folding and its links with human93. Dobson CM (2003) Protein folding and misfolding. NatureCM (2004) Principles of protein folding, misfolding and

  14. Microstructural white matter changes in Alzheimer's disease : a diffusion tensor imaging study

    E-Print Network [OSTI]

    Horne, Nikki Renee

    2008-01-01T23:59:59.000Z

    62(10), 1862-1864. Van Petten, C. (2004). Relationship42(10), 1394-1413. Van Petten, C. , Plante, E. , Davidson,regions (Raz, 2005; Van Petten et al. , 2004). This pattern

  15. Journal of Alzheimer's Disease 14 (2008) 235245 235 Three-Dimensional Tomographic Imaging

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    2008-01-01T23:59:59.000Z

    , Cleveland Ohio, USA f College of Sciences, University of Texas at San Antonio, San Antonio, Texas, USA g microscopy (HR-TEM), energy dispersive X-ray (EDX) spectroscopy and electron energy-loss spectroscopy (EELS of these important roles, iron can also be toxic, with certain forms participating in the production of free radicals

  16. Impaired Adult Neurogenesis in the Dentate Gyrus of a Triple Transgenic Mouse Model of Alzheimer's Disease

    E-Print Network [OSTI]

    2008-01-01T23:59:59.000Z

    Masashi Tabuchi 1 , Stuart M. Allan 1 , Elysse M. Knight 1 ,JJ, Jones VC, Tabuchi M, Allan SM, Knight EM, et al. (2008)

  17. Sleep and markers of cardiovascular disease risk in elderly Alzheimer's caregivers

    E-Print Network [OSTI]

    Schwartz, Jennifer

    2012-01-01T23:59:59.000Z

    14. Vgontzas AN, Liao D, Bixler EO, Chrousos GP, Vela-BuenoVgontzas AN, Tsigos C, Bixler EO, et al. Chronic insomnia14. Vgontzas AN, Liao D, Bixler EO, Chrousos GP, Vela-Bueno

  18. Body mass index is associated with biological CSF markers of core brain pathology of Alzheimer's disease

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Schneider JA, Leurgans S, Bennett DA. Physical frailty inJA, Wilson RS, Bienias JL, Bennett DA. Body mass index inFitzpatrick e , David Bennett f , Lennart Minthun d , John

  19. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    and the combination of PET and CT into one imaging system (dose (35). Since the PET and CT components are attachedionizing radiation (unlike PET and CT), provides excellent

  20. Brain Imaging with Positron Emission Tomography: Quantification and Biomedical Applications in Alzheimer's Disease and Brain Tumors

    E-Print Network [OSTI]

    Wardak, Mirwais

    2013-01-01T23:59:59.000Z

    but may also lead to a loss of information and even uselesscan also lead to a loss in the information content contained

  1. A novel invertebrate chordate model for Alzheimer's disease using the ascidian ciona intestinalis

    E-Print Network [OSTI]

    Virata, Michael J.

    2009-01-01T23:59:59.000Z

    H (2006) Regulation of tyrosinase trafficking and processingthe pigment cell marker tyrosinase (data unpublished) haverole in both regulating tyrosinase activity, a biosynthetic

  2. Sleep and markers of cardiovascular disease risk in elderly Alzheimer's caregivers

    E-Print Network [OSTI]

    Schwartz, Jennifer

    2012-01-01T23:59:59.000Z

    30(12):645-52. Espeland MA, O'Leary D H, Terry JG, Morgan T,82(4):1230-42. Espeland MA, O'Leary D H, Terry JG, Morgan T,circulation 2004;35(9):2150-4. O'Leary DH, Polak JF, Kronmal

  3. UNCORRECTEDPROOF 2 3D characterization of brain atrophy in alzheimer's disease and mild

    E-Print Network [OSTI]

    Thompson, Paul

    ,a Arthur W. Toga,a Natasha Lepore,a 5 Yi-Yu Chou,a Caroline Brun,a Ming-Chang Chiang,a Marina Barysheva Harvey,e John Kornak,f Norbert Schuff,g Lauren Boreta,g Gene E. Alexander,i 9 Michael W. Weiner,g,h Paul

  4. THREE-DIMENSIONAL STRUCTURE OF THE LITHOSTATHINE PROTOFIBRIL, A PROTEIN INVOLVED IN ALZHEIMER'S DISEASE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    interactions into a tetramer. Each tetramer then linked up with another tetramer as the result of longitudinal

  5. The inside outs of AdS(3)/CFT(2): Exact AdS wormholes with entangled CFT duals

    E-Print Network [OSTI]

    Gautam Mandal; Ritam Sinha; Nilakash Sorokhaibam

    2014-11-03T23:59:59.000Z

    We present the complete family of solutions of 3D gravity (Lambda<0) with two asymptotically AdS exterior regions. The solutions are constructed from data at the two boundaries, which correspond to two independent and arbitrary stress tensors T_R, \\bar T_R, and T_L, \\bar T_L. The two exteriors are smoothly joined on to an interior region through a regular horizon. We find CFT duals of these geometries which are entangled states of two CFT's. We compute correlators between general operators at the two boundaries and find perfect agreement between CFT and bulk calculations. We calculate and match the CFT entanglement entropy (EE) with the holographic EE which involves geodesics passing through the wormhole. We also compute a holographic, non-equilibrium entropy for the CFT using properties of the regular horizon. The construction of the bulk solutions here uses an exact version of Brown-Henneaux type diffeomorphisms which are asymptotically nontrivial and transform the CFT states by two independent unitary operators on the two sides. Our solutions provide an infinite family of explicit examples of the ER=EPR relation of Maldacena and Susskind [arXiv:1306.0533].

  6. Online Effects of Offline Ads Diane Lambert

    E-Print Network [OSTI]

    Tomkins, Andrew

    a methodology for assessing how ad campaigns in offline media such as print, audio and TV affect online in-in-difference estimation, Lift, Causal Modeling, Bootstrapping 1. INTRODUCTION Loosely speaking, an ad is effective was conducted in an offline medium such as print, radio or TV. That is, one measure of offline ad effectiveness

  7. Tunneling between the giant gravitons in AdS5 x S5

    E-Print Network [OSTI]

    Julian Lee

    2001-04-05T23:59:59.000Z

    I consider the giant gravitons in AdS5 x S5. By numerical simulation, I show a strong indication that there is no instanton solution describing the direct tunneling between the giant graviton in the S5 and its dual counterpart in the AdS5. I argue that it supports the supersymmetry breaking scenario suggested in hep-th/0008015

  8. 3D structure of Alzheimer's amyloid-{beta}(1-42) fibrils Dbeli, David Schubert, and Roland Riek

    E-Print Network [OSTI]

    Riek, Roland

    3D structure of Alzheimer's amyloid-{beta}(1-42) fibrils Döbeli, David Schubert, and Roland Riek.pnas.org/misc/reprints.shtml To order reprints, see: Notes: #12;3D structure of Alzheimer's amyloid- (1­42) fibrils Thorsten Lu¨ hrs fibrils (2, 3). Only one 3D structure of an engineered amyloid fibril has yet been determined (4), owing

  9. University Policy No.: AD2530 Classification: Administration

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AD2530 Classification: Administration PHOTOCOPY AND FACSIMILE (FAX may be obtained through library managed machines or through the use of personal accounts. 1

  10. ammonia synthesis ad: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    spin fields in AdS(5) HEP - Theory (arXiv) Summary: Free arbitrary spin massless and self-dual massive fields propagating in AdS5 are investigated. We study totally...

  11. Information Regarding MENINGOCOCCAL DISEASE

    E-Print Network [OSTI]

    . Meningococcal disease is a serious disease, caused by bacteria. Meningococcal disease is a contagious

  12. In vivo modification of Abeta plaque toxicity as a novel neuroprotective lithium-mediated therapy for Alzheimer¿s disease pathology

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Departamento de Biologia Celular, Genetica y Fisiologia,Departamento de Biologia Celular, Genetica y Fisiologia,

  13. GPR50, a potential factor involved in psychiatric disorders interacts with Alzheimer’s disease-related protein ?- secretase (BACE1) 

    E-Print Network [OSTI]

    Li, Qian

    2014-11-28T23:59:59.000Z

    GPR50, an X-linked orphan G protein-coupled receptor (GPCR), is a risk factor for bipolar disorder (BD) in female subjects. It has been shown that GPR50 plays a part in neurite outgrowth, glucocorticoid receptor signalling ...

  14. AdS (In)stability: Lessons From The Scalar Field

    E-Print Network [OSTI]

    Pallab Basu; Chethan Krishnan; P. N. Bala Subramanian

    2015-01-29T23:59:59.000Z

    We argued in arXiv:1408.0624 that the quartic scalar field in AdS has features that could be instructive for answering the gravitational stability question of AdS. Indeed, the conserved charges identified there have recently been observed in the full gravity theory as well. In this paper, we continue our investigation of the scalar field in AdS and provide evidence that in the Two-Time Formalism (TTF), even for initial conditions that are far from quasi-periodicity, the energy in the higher modes at late times is exponentially suppressed in the mode number. Based on this and some related observations, we argue that there is no thermalization in the scalar TTF model within time-scales that go as $\\sim 1/\\epsilon^2$, where $\\epsilon$ measures the initial amplitude (with only low-lying modes excited). It is tempting to speculate that the result holds also for AdS collapse.

  15. Duality invariance of $s \\ge 3/2$ fermions in AdS

    E-Print Network [OSTI]

    S. Deser; D. Seminara

    2014-09-11T23:59:59.000Z

    We show that in D=4 AdS, $s\\ge 3/2$ partially massless (PM) fermions retain the duality invariances of their flat space massless counterparts. They have tuned ratios $ {m^2}/{M^2}\

  16. Splitting of Folded Strings in AdS_4*CP^3

    E-Print Network [OSTI]

    Jun-Bao Wu

    2012-08-04T23:59:59.000Z

    We study classically splitting of two kinds of folded string solutions in AdS_4*CP^3. Conserved charges of the produced fragments are computed for each case. We find interesting patterns among these conserved charges.

  17. Distributed services for mobile ad hoc networks

    E-Print Network [OSTI]

    Cao, Guangtong

    2005-11-01T23:59:59.000Z

    A mobile ad hoc network consists of certain nodes that communicate only through wireless medium and can move arbitrarily. The key feature of a mobile ad hoc network is the mobility of the nodes. Because of the mobility, communication links form...

  18. Inflation in AdS/CFT

    SciTech Connect (OSTI)

    Freivogel, Ben; /Stanford U., Phys. Dept. /LBL, Berkeley; Hubeny, Veronika E.; /LBL, Berkeley /Durham U., Dept. of Math.; Maloney, Alexander; /Stanford U., Phys. Dept.; Myers, Rob; /Perimeter Inst. Theor. Phys. /Waterloo U.; Rangamani, Mukund; /LBL, Berkeley /Durham U., Dept. of Math.; Shenker, Stephen; /Stanford U., Phys. Dept.

    2005-10-07T23:59:59.000Z

    We study the realization of inflation within the AdS/CFT correspondence. We assume the existence of a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de Sitter state. Standard arguments imply that the bulk physics in the vicinity of the AdS minimum is described by a boundary CFT. We argue that large enough bubbles of the dS phase, including those able to inflate, are described by mixed states in the CFT. Inflating degrees of freedom are traced over and do not appear explicitly in the boundary description. They nevertheless leave a distinct imprint on the mixed state. Analytic continuation allows us, in principle, to recover a large amount of nonperturbatively defined information about the inflating regime. Our work also shows that no scattering process can create an inflating region, even by quantum tunneling, since a pure state can never evolve into a mixed state under unitary evolution.We study the realization of inflation within the AdS/CFT correspondence. We assume the existence of a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de Sitter state. Standard arguments imply that the bulk physics in the vicinity of the AdS minimum is described by a boundary CFT. We argue that large enough bubbles of the dS phase, including those able to inflate, are described by mixed states in the CFT. Inflating degrees of freedom are traced over and do not appear explicitly in the boundary description. They nevertheless leave a distinct imprint on the mixed state. Analytic continuation allows us, in principle, to recover a large amount of nonperturbatively defined information about the inflating regime. Our work also shows that no scattering process can create an inflating region, even by quantum tunneling, since a pure state can never evolve into a mixed state under unitary evolution.

  19. AdS black hole solutions in dilatonic Einstein-Gauss-Bonnet gravity

    SciTech Connect (OSTI)

    Maeda, Kei-ichi [Department of Physics, Waseda University, Shinjuku, Tokyo 169-8555 (Japan); Advanced Research Institute for Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555 (Japan); Ohta, Nobuyoshi [Department of Physics, Kinki University, Higashi-Osaka, Osaka 577-8502 (Japan); Sasagawa, Yukinori [Department of Physics, Waseda University, Shinjuku, Tokyo 169-8555 (Japan)

    2011-02-15T23:59:59.000Z

    We find that anti-de Sitter (AdS) spacetime with a nontrivial linear dilaton field is an exact solution in the effective action of the string theory, which is described by gravity with the Gauss-Bonnet curvature terms coupled to a dilaton field in the string frame without a cosmological constant. The AdS radius is determined by the spacetime dimensions and the coupling constants of curvature corrections. We also construct the asymptotically AdS black hole solutions with a linear dilaton field numerically. We find these AdS black holes for hyperbolic topology and in dimensions higher than four. We discuss the thermodynamical properties of those solutions. Extending the model to the case with the even-order higher Lovelock curvature terms, we also find the exact AdS spacetime with a nontrivial dilaton. We further find a cosmological solution with a bounce of three-dimensional space and a solitonic solution with a nontrivial dilaton field, which is regular everywhere and approaches an asymptotically AdS spacetime.

  20. The Tetrahedron Zamolodchikov Algebra and the AdS5 x S5 S-matrix

    E-Print Network [OSTI]

    Mitev, Vladimir; Tsuboi, Zengo

    2012-01-01T23:59:59.000Z

    The S-matrix of the AdS5 x S5 string theory is a tensor product of two centrally extended su(2|2) S-matrices, each of which is related to the R-matrix of the Hubbard model. The R-matrix of the Hubbard model was first found by Shastry, who ingeniously exploited the fact that, for zero coupling, the Hubbard model can be decomposed into two XX models. In this article, we review and clarify this construction from the AdS/CFT perspective and investigate the implications this has for the AdS5 x S5 S-matrix.

  1. The Tetrahedron Zamolodchikov Algebra and the AdS5 x S5 S-matrix

    E-Print Network [OSTI]

    Vladimir Mitev; Matthias Staudacher; Zengo Tsuboi

    2012-10-08T23:59:59.000Z

    The S-matrix of the AdS5 x S5 string theory is a tensor product of two centrally extended su(2|2) S-matrices, each of which is related to the R-matrix of the Hubbard model. The R-matrix of the Hubbard model was first found by Shastry, who ingeniously exploited the fact that, for zero coupling, the Hubbard model can be decomposed into two XX models. In this article, we review and clarify this construction from the AdS/CFT perspective and investigate the implications this has for the AdS5 x S5 S-matrix.

  2. Simultaneous Segmentation and Grading of Hippocampus for Patient Classification with Alzheimer's

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Simultaneous Segmentation and Grading of Hippocampus for Patient Classification with Alzheimer library used during our experiments was composed by 2 populations, 50 Cognitively Normal subjects (CN of the HC at the same time resulted in an efficient patient classification with a success rate of 90

  3. ALZHEIMER'S AMYLOID-BETA PEPTIDE INHIBITS SODIUM/CALCIUM EXCHANGE MEASURED IN RAT AND

    E-Print Network [OSTI]

    ALZHEIMER'S AMYLOID-BETA PEPTIDE INHIBITS SODIUM/CALCIUM EXCHANGE MEASURED IN RAT AND HUMAN BRAIN-beta1­40 (A 1­40) and A 25­35 reduced vesicular Ca2+ content. Both peptides produced a maximal reduction in Ca2+ content of approximately 50%. The peptides reduced Ca2+ content with similar potency and half

  4. Higher spins in AdS_5 at one loop: vacuum energy, boundary conformal anomalies and AdS/CFT

    E-Print Network [OSTI]

    M. Beccaria; A. A. Tseytlin

    2014-11-18T23:59:59.000Z

    We consider general-symmetry higher spin fields in AdS_5 and derive expressions for their one-loop corrections to vacuum energy E and the associated 4d boundary conformal anomaly a-coefficient. We a propose a similar expression for the second conformal anomaly c-coefficient. We show that all the three quantities (E, a, c) computed for N=8 gauged 5d supergravity are -1/2 of the values for N=4 conformal 4d supergravity and also twice the values for N=4 Maxwell multiplet. This gives 5d derivation of the fact that the system of N=4 conformal supergravity and four N=4 Maxwell multiplets is anomaly free. The values of (E, a, c) for the states at level p of Kaluza-Klein tower of 10d type IIB supergravity compactified on S^5 turn out to be equal to those for p copies of N=4 Maxwell multiplets. This may be related to the fact that these states appear in the tensor product of p superdoubletons. Under a natural regularization of the sum over p, the full 10d supergravity contribution is then minus that of the Maxwell multiplet, in agreement with the standard adjoint AdS/CFT duality (SU(n) SYM contribution is n^2-1 of one Maxwell multiplet). We also verify the matching of (E, a, c) for spin 0 and 1/2 boundary theory cases of vectorial AdS/CFT duality. The consistency conditions for vectorial AdS/CFT turn out to be equivalent to the cancellation of anomalies in the closely related 4d conformal higher spin theories. In addition, we study novel example of vectorial AdS/CFT duality when the boundary theory is described by free spin 1 fields and is dual to a particular higher spin theory in AdS_5 containing fields in mixed-symmetry representations. We also discuss its supersymmetric generalizations.

  5. IT Licentiate theses Ad Hoc Routing Protocol

    E-Print Network [OSTI]

    Flener, Pierre

    IT Licentiate theses 2005-004 Ad Hoc Routing Protocol Validation OSKAR WIBLING UPPSALA UNIVERSITY SWEDEN Dissertation for the degree of Licentiate of Technology in Computer Science at Uppsala University

  6. University Policy No.: AD2215 Classification: Administration

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AD2215 Classification: Administration Approving Authority: Board of Governors LICENSING PROGRAM POLICY Effective Date: June/90 Supersedes: Last Editorial Change: Mandated Review: 1. This statement applies to the policies and administration of trademarks registered

  7. University Policy No.: AD2210 Classification: Administration

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AD2210 Classification: Administration FIELDWORK AND INTERNATIONAL Approving Authority: President TRAVEL RISK MANAGEMENT POLICY Effective Date: November/07 Supersedes: New Last Editorial Change: Mandated Review: November/14 Purpose 1. The purpose of the policy

  8. Virtual infrastructure for wireless ad hoc networks

    E-Print Network [OSTI]

    Gilbert, Seth, 1976-

    2007-01-01T23:59:59.000Z

    One of the most significant challenges introduced by ad hoc networks is coping with the unpredictable deployment, uncertain reliability, and erratic communication exhibited by emerging wireless networks and devices. The ...

  9. Missouri Value-Added Grant Program (Missouri)

    Broader source: Energy.gov [DOE]

    The Missouri Value-Added Grant Program provides grants for projects that add value to Missouri agricultural products and aid the economy of a rural community. Grant applications will be considered...

  10. Testing the AdS/CFT Correspondence

    SciTech Connect (OSTI)

    Klebanov, Igor R. [Joseph Henry Laboratories and Princeton Center for Theoretical Science, Princeton University, Princeton, NJ 08544 (United States)

    2008-07-28T23:59:59.000Z

    This lecture begins with some history and basic facts about string theory and its connections with strong interactions. Comparisons of stacks of Dirichlet branes with curved backgrounds produced by them are used to motivate the AdS/CFT correspondence between superconformal gauge theory and string theory on a product of Anti-de Sitter space and a compact manifold. The ensuing duality between semi-classical spinning strings and long gauge theory operators is briefly reviewed. We go on to describe a recent test of the AdS/CFT correspondence using the Wilson loop cusp anomaly as a function of the coupling, which also enters dimensions of high-spin operators. Finally, strongly coupled thermal SYM theory is explored via a black hole in 5-dimensional AdS space, which leads to explicit results for its entropy and shear viscosity.

  11. Distributed algorithms for mobile ad hoc networks

    E-Print Network [OSTI]

    Malpani, Navneet

    2001-01-01T23:59:59.000Z

    We first present two new leader election algorithms for mobile ad hoc networks. The algorithms ensure that eventually each connected component of the topology graph has exactly one leader. The algorithms are based on a routing algorithm called TORA...

  12. AUAARHUS UNIVERSITY Adding of attachments Financial Control

    E-Print Network [OSTI]

    , and the picture file from this scan must be saved (on a PC or server) before the file is added to the expense sheet. Important: Attachments must be saved in PDF or TIF format. If the attachment is not added in one address or save the picture file on your PC or a server. Open the file and save it on your PC #12;AUAARHUS

  13. Pesticides and human chronic diseases: Evidences, mechanisms, and perspectives

    SciTech Connect (OSTI)

    Mostafalou, Sara; Abdollahi, Mohammad, E-mail: Mohammad.Abdollahi@UToronto.Ca

    2013-04-15T23:59:59.000Z

    Along with the wide use of pesticides in the world, the concerns over their health impacts are rapidly growing. There is a huge body of evidence on the relation between exposure to pesticides and elevated rate of chronic diseases such as different types of cancers, diabetes, neurodegenerative disorders like Parkinson, Alzheimer, and amyotrophic lateral sclerosis (ALS), birth defects, and reproductive disorders. There is also circumstantial evidence on the association of exposure to pesticides with some other chronic diseases like respiratory problems, particularly asthma and chronic obstructive pulmonary disease (COPD), cardiovascular disease such as atherosclerosis and coronary artery disease, chronic nephropathies, autoimmune diseases like systemic lupus erythematous and rheumatoid arthritis, chronic fatigue syndrome, and aging. The common feature of chronic disorders is a disturbance in cellular homeostasis, which can be induced via pesticides' primary action like perturbation of ion channels, enzymes, receptors, etc., or can as well be mediated via pathways other than the main mechanism. In this review, we present the highlighted evidence on the association of pesticide's exposure with the incidence of chronic diseases and introduce genetic damages, epigenetic modifications, endocrine disruption, mitochondrial dysfunction, oxidative stress, endoplasmic reticulum stress and unfolded protein response (UPR), impairment of ubiquitin proteasome system, and defective autophagy as the effective mechanisms of action. - Highlights: ? There is a link between exposure to pesticides and incidence of chronic diseases. ? Genotoxicity and proteotoxicity are two main involved mechanisms. ? Epigenetic knowledge may help diagnose the relationships. ? Efficient policies on safe use of pesticides should be set up.

  14. Holographic superconductors in the AdS black hole spacetime with a global monopole

    E-Print Network [OSTI]

    Songbai Chen; Liancheng Wang; Chikun Ding; Jiliang Jing

    2010-06-08T23:59:59.000Z

    We study holographic superconductors in the Schwarzschild-AdS black hole with a global monopole through a charged complex scalar field. We calculate the condensates of the charged operators in the dual conformal field theories (CFTs) and discuss the effects of the global monopole on the condensation formation. Moreover, we compute the electric conductive using the probe approximation and find that the properties of the conductive are quite similar to those in the Schwarzschild-AdS black hole. These results can help us know more about holographic superconductors in the asymptotic AdS black holes.

  15. Bonus Symmetries of N=4 Super-Yang-Mills Correlation Functions via AdS Duality

    E-Print Network [OSTI]

    Kenneth Intriligator

    1999-05-03T23:59:59.000Z

    General conjectures about the SL(2,Z) modular transformation properties of N=4 super-Yang-Mills correlation functions are presented. It is shown how these modular transformation properties arise from the conjectured duality with IIB string theory on AdS_5 x S^5. We discuss in detail a prediction of the AdS duality: that N=4 field theory, in an appropriate limit, must exhibit bonus symmetries, corresponding to the enhanced symmetries of IIB string theory in its supergravity limit.

  16. Building America Expert Meeting: Key Innovations for Adding Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Key Innovations for Adding Energy Efficiency to Maintenance Projects Building America Expert Meeting: Key Innovations for Adding Energy Efficiency to Maintenance Projects This...

  17. Addendum Added to Innovative Demonstration of Geothermal Energy...

    Office of Environmental Management (EM)

    Addendum Added to Innovative Demonstration of Geothermal Energy Production FOA Addendum Added to Innovative Demonstration of Geothermal Energy Production FOA July 2, 2010 - 2:13pm...

  18. Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks

    E-Print Network [OSTI]

    Tan, Choo Chin

    2013-01-01T23:59:59.000Z

    organization wireless networks and wireless mobile ad-hocfor heterogeneous wireless network”, in Proc. of IEEER. Khalaf, “Ad hoc wireless networks with mobile backbones,”

  19. access ad hoc: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the channel utilization of multihop wireless networks. Keywords: Mobile ad hoc networks, medium access control, this is not necessarily true in a mobile ad hoc network (MANET)...

  20. 2013 S. Karger AG, Basel 16645464/13/00310417$38.00/0

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Médecine Interne Gériatrique, Pôle de Personnes Âgées et Soins à Domicile, Centre Hospitalier Universitaire which Alzheimer's disease (AD) is managed. In this study, we ex- plore three approaches that can help

  1. Hawking radiation for a scalar field conformally coupled to an AdS black hole

    E-Print Network [OSTI]

    P. Valtancoli

    2015-02-05T23:59:59.000Z

    The decomposition in normal modes of a scalar field conformally coupled to an AdS black hole leads to a Heun equation with simple coefficients thanks to conformal invariance. By applying the Damour-Ruffini method we can relate the critical exponent of the radial part at the horizon surface to the Hawking radiation of scalar particles.

  2. S-matrix for strings on $\\eta$-deformed AdS5 x S5

    E-Print Network [OSTI]

    Arutyunov, Gleb; Frolov, Sergey

    2014-01-01T23:59:59.000Z

    We determine the bosonic part of the superstring sigma model Lagrangian on $\\eta$-deformed AdS5 x S5, and use it to compute the perturbative world-sheet scattering matrix of bosonic particles of the model. We then compare it with the large string tension limit of the q-deformed S-matrix and find exact agreement.

  3. S-matrix for strings on $?$-deformed AdS5 x S5

    E-Print Network [OSTI]

    Gleb Arutyunov; Riccardo Borsato; Sergey Frolov

    2014-04-07T23:59:59.000Z

    We determine the bosonic part of the superstring sigma model Lagrangian on $\\eta$-deformed AdS5 x S5, and use it to compute the perturbative world-sheet scattering matrix of bosonic particles of the model. We then compare it with the large string tension limit of the q-deformed S-matrix and find exact agreement.

  4. Bound State Transfer Matrix for AdS5 x S5 Superstring

    E-Print Network [OSTI]

    Gleb Arutyunov; Marius de Leeuw; Ryo Suzuki; Alessandro Torrielli

    2009-09-17T23:59:59.000Z

    We apply the algebraic Bethe ansatz technique to compute the eigenvalues of the transfer matrix constructed from the general bound state S-matrix of the light-cone AdS5 x S5 superstring. This allows us to verify certain conjectures on the quantum characteristic function, and to extend them to the general case.

  5. The Thermal Scalar and Random Walks in AdS3 and BTZ

    E-Print Network [OSTI]

    Thomas G. Mertens; Henri Verschelde; Valentin I. Zakharov

    2014-07-08T23:59:59.000Z

    We analyze near-Hagedorn thermodynamics of strings in the WZW $AdS_3$ model. We compute the thermal spectrum of all primaries and find the thermal scalar explicitly in the string spectrum using CFT twist techniques. Then we use the link to the Euclidean WZW BTZ black hole and write down the Euclidean BTZ spectrum. We give a Hamiltonian interpretation of the thermal partition function of angular orbifolds where we find a reappearance of discrete states that dominate the partition function. Using these results, we discuss the nature of the thermal scalar in the WZW BTZ model. As a slight generalization of the angular orbifolds, we discuss the $AdS_3$ string gas with a non-zero chemical potential corresponding to angular momentum around the spatial cigar. For this model as well, we determine the thermal spectrum and the Hagedorn temperature as a function of chemical potential. Finally the nature of $\\alpha'$ corrections to the $AdS_3$ thermal scalar action is analyzed and we find the random walk behavior of highly excited strings in this particular $AdS_3$ background.

  6. Holographic superconductors in the AdS black hole with a magnetic charge

    E-Print Network [OSTI]

    M. R. Setare; D. Momeni; R. Myrzakulov; Muhammad Raza

    2012-11-17T23:59:59.000Z

    In this work we study the analytical properties of a 2+1 dimensional magnetically charged holographic superconductor in $AdS_4$. We obtain the critical chemical potential $\\mu_c$ analytically, using the Sturm-Liouville variational approach. Also, the obtained analytic result can be used to back up the numerical computations in the holographic superconductor in the probe limit.

  7. Multi-Spin Strings in AdS_4*CP^3 and its ?-deformation

    E-Print Network [OSTI]

    Jun-Bao Wu

    2013-05-31T23:59:59.000Z

    In this paper, we study the multi-spin string solutions in AdS_4*CP^3 and its \\beta-deformation with real \\beta. We give various explicit solutions after some general studies. Conserved charges are computed for these explicit solutions.

  8. Action Principles for Transgression and Chern-Simons AdS Gravities

    E-Print Network [OSTI]

    Pablo Mora

    2014-08-06T23:59:59.000Z

    Chern-Simons gravities are theories with a lagrangian given by a Chern-Simons form constructed from a space-time gauge group. In previous investigations we showed that, for some special field configurations that are solutions of the field equations, the extension from Chern-Simons to Transgression forms as lagrangians, motivated by gauge invariance, automatically yields the boundary terms required to regularize the theory, giving finite conserved charges and black hole thermodynamics. Further work by other researchers showed that one of the action functionals considered in the above mentioned work yields a well defined action principle in the metric (zero torsion) case and for asymptotically Anti de Sitter (AdS) space-times. In the present work we consider several action functionals for Chern-Simons AdS gravity constructed from Transgression forms, and show the action principles to be well defined and the Noether charges and Euclidean action to be finite for field configurations satisfying only that the gauge field curvature (field strength) for the AdS gauge group is asymptotically finite. For that purpose we consider an asymptotic expansion of the vielbein and spin connection that may be regarded as a perturbation of an AdS space-time, but allowing a non zero torsion. Our results are of potential interest for Lovelock gravity theories, as it has been shown that the boundary terms dictated by the transgressions for Chern-Simons gravities are also suitable to regularize Lovelock theories.

  9. Killing spinors, the adS black hole and I(ISO(2,1)) gravity

    E-Print Network [OSTI]

    R. B. Mann; G. Papadopoulos

    1996-06-12T23:59:59.000Z

    We construct a supersymmetric extension of the $I\\big(ISO(2,1)\\big)$ Chern-Simons gravity and show that certain particle-like solutions and the adS black-hole solution of this theory are supersymmetric.

  10. QCD condensates in ADS/QCD

    E-Print Network [OSTI]

    Jacopo Bechi

    2009-09-25T23:59:59.000Z

    This paper focuses on some issues about condensates and renormalization in AdS/QCD models. In particular we consider the consistency of the AdS/QCD approach for scale dependent quantities as the chiral condensate questioned in some recent papers and the 4D meaning of the 5D cosmological constant in a model in which the QCD is dual to a 5D gravity theory. We will be able to give some arguments that the cosmological constant is related to the QCD gluon condensate.

  11. Ad Lucem: Modeling Market Transformation Pathways Workshop

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1 AAccelerated aging of1.1Energy DPF forWorkshop Welcome AdAD

  12. R-charged AdS_{5} black holes and large N unitary matrix models

    E-Print Network [OSTI]

    Pallab Basu; Spenta R. Wadia

    2005-07-20T23:59:59.000Z

    Using the AdS/CFT, we establish a correspondence between the intricate thermal phases of R-charged AdS_{5} blackholes and the R-charge sector of the N=4 gauge theory, in the large N limit. Integrating out all fields in the gauge theory except the thermal Polyakov line, leads to an effective unitary matrix model. In the canonical ensemble, a logarithmic term is generated in the non-zero charge sector of the matrix model. This term is important to discuss various supergravity properties like i) the non-existence of thermal AdS as a solution, ii) the existence of a point of cusp catastrophe in the phase diagram and iii) the matching of saddle points and the critical exponents of supergravity and those of the effective matrix model.

  13. Holographic Thermalization, stability of AdS, and the Fermi-Pasta-Ulam-Tsingou paradox

    E-Print Network [OSTI]

    Venkat Balasubramanian; Alex Buchel; Stephen R. Green; Luis Lehner; Steven L. Liebling

    2014-06-16T23:59:59.000Z

    For a real massless scalar field in general relativity with a negative cosmological constant, we uncover a large class of spherically symmetric initial conditions that are close to AdS, but whose numerical evolution does not result in black hole formation. According to the AdS/CFT dictionary, these bulk solutions are dual to states of a strongly interacting boundary CFT that fail to thermalize at late times. Furthermore, as these states are not stationary, they define dynamical CFT configurations that do not equilibrate. We develop a two-timescale perturbative formalism that captures both direct and inverse cascades of energy and agrees with our fully nonlinear evolutions in the appropriate regime. We also show that this formalism admits a large class of quasi-periodic solutions. Finally, we demonstrate a striking parallel between the dynamics of AdS and the classic Fermi-Pasta-Ulam-Tsingou problem.

  14. Deeply Virtual Compton Scattering and Higgs Production Using the Pomeron in AdS

    E-Print Network [OSTI]

    Richard C. Brower; Miguel S. Costa; Marko Djuri?; Chung-I Tan

    2012-10-04T23:59:59.000Z

    In the past decade overwhelming evidence has emerged for a conjectured duality between a wide class of gauge theories in d dimensions and string theories on asymptotically AdS_{d+1} spaces. We apply this duality to scattering processes that occur via Pomeron exchange. First we develop the Pomeron in string theory, as done by Brower, Polchinski, Strassler and Tan, showing that it naturally emerges as the Regge Trajectory of the AdS graviton. Next we apply the AdS Pomeron to the study of Deeply Virtual Compton Scattering (DVCS), and see that our model gives good results when compared to HERA data. We then show how we can extend our results to double Pomeron exchange, and apply it to developing a formalism for the study of double diffractive Higgs production.

  15. The Classical Exchange Algebra of AdS5 x S5 String Theory

    E-Print Network [OSTI]

    Marc Magro

    2009-01-07T23:59:59.000Z

    The classical exchange algebra satisfied by the monodromy matrix of AdS5 x S5 string theory in the Green-Schwarz formulation is determined by using a first-order Hamiltonian formulation and by adding to the Bena-Polchinski-Roiban Lax connection terms proportional to constraints. This enables in particular to show that the conserved charges of this theory are in involution. This result is obtained for a general world-sheet metric. The same exchange algebra is obtained within the pure spinor description of AdS5 x S5 string theory. These results are compared to the one obtained by A. Mikhailov and S. Schaefer-Nameki for the pure spinor formulation.

  16. Clock synchronization for mobile ad hoc networks

    E-Print Network [OSTI]

    Chandra, Rajan

    2013-02-22T23:59:59.000Z

    Time Protocol) used in wired networks (e.g. Internet) to Mobile Ad Hoc Networks (MANets). It may also be achieved by developing other algorithms that achieve clock synchronization and may be suitable for MANets. Using the Network Time Protocol (NTP...

  17. University Policy No.: AD2300 Classification: Administration

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AD2300 Classification: Administration Approving Authority: President FLAG DISPLAY POLICY Effective Date: March/08 Supersedes: June/99 Last Editorial Change: Mandated Review: March/15 PURPOSE 1.00 The purpose of this policy is to provide guidance on the display of flags

  18. Measuring value added characteristics in feeder cattle

    E-Print Network [OSTI]

    Mathews, Crystal Dawn

    2009-05-15T23:59:59.000Z

    , cyclical effects, lot size, weight, breed type, sex, commingling, fed cattle futures price, and corn price were all found to have an impact on the sale price of feeder cattle. Feeder calves sold through MFA Health Track Beef Alliance and other value added...

  19. Secret Symmetries in AdS/CFT

    E-Print Network [OSTI]

    Marius de Leeuw; Takuya Matsumoto; Sanefumi Moriyama; Vidas Regelskis; Alessandro Torrielli

    2012-04-11T23:59:59.000Z

    We discuss special quantum group (secret) symmetries of the integrable system associated to the AdS/CFT correspondence. These symmetries have by now been observed in a variety of forms, including the spectral problem, the boundary scattering problem, n-point amplitudes, the pure-spinor formulation and quantum affine deformations.

  20. Secret Symmetries in AdS/CFT

    E-Print Network [OSTI]

    de Leeuw, Marius; Moriyama, Sanefumi; Regelskis, Vidas; Torrielli, Alessandro

    2012-01-01T23:59:59.000Z

    We discuss special quantum group (secret) symmetries of the integrable system associated to the AdS/CFT correspondence. These symmetries have by now been observed in a variety of forms, including the spectral problem, the boundary scattering problem, n-point amplitudes, the pure-spinor formulation and quantum affine deformations.

  1. AD CONTENT CHECK LIST: o Company logo

    E-Print Network [OSTI]

    Zakharov, Vladimir

    AD CONTENT CHECK LIST: o Company logo o Address o Contact Info: Phone, web site, and/or e-mail o that will perfectly reflect your image! Acceptable Formats For Logos/Graphics/Photos High-Res (300 dpi) PDF, EPS

  2. Training Needs in Louisiana's Value-Added Forest Products Industry

    E-Print Network [OSTI]

    Training Needs in Louisiana's Value-Added Forest Products Industry Richard VloskyRichard Vlosky-Added Training in Other States · The Need for Training in Louisiana-Past Research #12;Industry Development & Adding Value #12;Value-Added Industry Development is Multi-Faceted Marketing Workforce Training Strategic

  3. A/D Converter Jee-Hwan Ryu

    E-Print Network [OSTI]

    Ryu, Jee-Hwan

    A/D , MUX and REFS update #12;Korea University of Technology and Education ADSC=1 of Technology and Education Korea University of Technology and Education A/D converter #12;Korea University of Technology and Education () AD > -> X = 1 Korea University of Technology and Education AD #12;Korea

  4. Universality of Long-Distance AdS Physics from the CFT Bootstrap

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan; Matthew T. Walters

    2014-07-10T23:59:59.000Z

    We begin by explicating a recent proof of the cluster decomposition principle in AdS_{d+1} from the CFT_d bootstrap in d > 2. The CFT argument also computes the leading interactions between distant objects in AdS, and we confirm the universal agreement between the CFT bootstrap and AdS gravity in the semi-classical limit. We proceed to study the generalization to 2d CFTs, which requires knowledge of the Virasoro conformal blocks in a lightcone OPE limit. We compute these blocks in a semiclassical, large central charge approximation, and use them to prove a suitably modified theorem. In particular, from the 2d bootstrap we prove the existence of large spin operators with fixed 'anomalous dimensions' indicative of the presence of deficit angles in AdS_3. As we approach the threshold for the BTZ black hole, interpreted as a CFT scaling dimension, the twist spectrum of large spin operators becomes dense. Due to the exchange of the Virasoro identity block, primary states above the BTZ threshold mimic a thermal background for light operators. We derive the BTZ quasi-normal modes, and we use the bootstrap equation to prove that the twist spectrum is dense. Corrections to thermality could be obtained from a more refined computation of the Virasoro conformal blocks.

  5. Covariant propagator in AdS5 x S5 superspace

    E-Print Network [OSTI]

    Peng Dai; Ru-Nan Huang; Warren Siegel

    2010-02-10T23:59:59.000Z

    We give an explicit superspace propagator for the chiral scalar field strength of 10D IIB supergravity on an AdS5 x S5 background. Because this space is conformally flat, the propagator is very simple, almost identical to that of flat space. We also give an explicit expansion over the Kaluza-Klein modes of S5. The fact that the full propagator is so much simpler suggests that, as in 2D conformal field theory, AdS/CFT calculations would be simpler without a mode expansion.

  6. The free energy of N=2 supersymmetric AdS_4 solutions of M-theory

    E-Print Network [OSTI]

    Maxime Gabella; Dario Martelli; Achilleas Passias; James Sparks

    2011-07-29T23:59:59.000Z

    We show that general N=2 supersymmetric AdS_4 solutions of M-theory with non-zero M2-brane charge admit a canonical contact structure. The free energy of the dual superconformal field theory on S^3 and the scaling dimensions of operators dual to supersymmetric wrapped M5-branes are expressed via AdS/CFT in terms of contact volumes. In particular, this leads to topological and localization formulae for the coefficient of N^{3/2} in the free energy of such solutions.

  7. AdS/CFT connection between Boltzmann and Einstein equations: Kinetic theory and pure gravity in AdS space

    SciTech Connect (OSTI)

    Iyer, Ramakrishnan [Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-0484 (United States); Mukhopadhyay, Ayan [Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad 211019 (India)

    2010-04-15T23:59:59.000Z

    The AdS/CFT correspondence defines a sector with universal strongly coupled dynamics in the field theory as the dual of pure gravity in AdS described by Einstein's equation with a negative cosmological constant. We explain here, from the field-theoretic viewpoint how the dynamics in this sector gets determined by the expectation value of the energy-momentum tensor alone. We first show that the Boltzmann equation has very special solutions which could be functionally completely determined in terms of the energy-momentum tensor alone. We call these solutions conservative solutions. We indicate why conservative solutions should also exist when we refine this kinetic description to go closer to the exact microscopic theory or even move away from the regime of weak coupling so that no kinetic description could be employed. We argue that these conservative solutions form the universal sector dual to pure gravity at strong coupling and large N. Based on this observation, we propose a regularity condition on the energy-momentum tensor so that the dual solution in pure gravity has a smooth future horizon. We also study if irreversibility emerges only at long time scales of observation, unlike the case of the Boltzmann equation.

  8. Isometry Group Orbit Quantization of Spinning Strings in AdS_3 x S^3

    E-Print Network [OSTI]

    Martin Heinze; George Jorjadze; Luka Megrelidze

    2014-10-13T23:59:59.000Z

    Describing the bosonic AdS_3 x S^3 particle and string in SU(1,1) x SU(2) group variables, we provide a Hamiltonian treatment of the isometry group orbits of solutions via analysis of the pre-symplectic form. For the particle we obtain a one-parameter family of orbits parameterized by creation-annihilation variables, which leads to the Holstein-Primakoff realization of the isometry group generators. The scheme is then applied to spinning string solutions characterized by one winding number in AdS_3 and two winding numbers in S^3. We find a two-parameter family of orbits, where quantization again provides the Holstein-Primakoff realization of the symmetry generators with an oscillator type energy spectrum. Analyzing the minimal energy at strong coupling we verify the spectrum of short strings at special values of winding numbers.

  9. 'AdS_5' Geometry Beyond Space-time and 4D Noncommutative Space-time

    E-Print Network [OSTI]

    Otto C. W. Kong

    2009-06-19T23:59:59.000Z

    We discuss a 4D noncommutative space-time as suggested by the version of quantum (deformed) relativity which provides a classical geometry picture as an `AdS_5'. The 4D noncommutative space-time is more like a part of a phase space description, in accordance with the quantum notion -- quantum mechanics talks about only states but not configurations. The `AdS_5' picture also illustrates the classical 4D space-time is to be described as part of a bigger geometry beyond space-time at the quantum level. The radically new picture of quantum 'space-time' is expected to provide the basis for a (still to be formulated) new approach to quantum gravity with fundamental constants (quantum) hbar and Newton's constant G put at a similar level as c, the speed of light.

  10. Renormalization, averaging, conservation laws and AdS (in)stability

    E-Print Network [OSTI]

    Ben Craps; Oleg Evnin; Joris Vanhoof

    2015-01-19T23:59:59.000Z

    We continue our analytic investigations of non-linear spherically symmetric perturbations around the anti-de Sitter background in gravity-scalar field systems, and focus on conservation laws restricting the (perturbatively) slow drift of energy between the different normal modes due to non-linearities. We discover two conservation laws in addition to the energy conservation previously discussed in relation to AdS instability. A similar set of three conservation laws was previously noted for a self-interacting scalar field in a non-dynamical AdS background, and we highlight the similarities of this system to the fully dynamical case of gravitational instability. The nature of these conservation laws is best understood through an appeal to averaging methods which allow one to derive an effective Lagrangian or Hamiltonian description of the slow energy transfer between the normal modes. The conservation laws in question then follow from explicit symmetries of this averaged effective theory.

  11. Beryllium disease

    SciTech Connect (OSTI)

    Not Available

    1991-12-20T23:59:59.000Z

    After two workers at the nuclear weapons plant at Oak Ridge National Laboratory in Tennessee were diagnosed earlier this year with chronic beryllium disease (CBD), a rare and sometimes fatal scarring of the lungs, the Department of Energy ordered up a 4-year probe. Now, part of that probe has begun - tests conducted by the Oak Ridge Associated Universities' Center for Epidemiological Research measuring beryllium sensitivity in 3,000 people who've been exposed to the metal's dust since Manhattan Project managers opened the Y-12 plant at Oak Ridge in 1943. Currently, 119 Y-12 employees process beryllium, which has a number of industrial uses, including rocket heat shields and nuclear weapon and electrical components. The disease often takes 20 to 25 years to develop, and the stricken employees haven't worked with beryllium for years. There is no cure for CBD, estimated to strike 2% of people exposed to the metal. Anti-inflammatory steroids alleviate such symptoms as a dry cough, weight loss, and fatigue. Like other lung-fibrosis diseases that are linked to lung cancer, some people suspect CBD might cause some lung cancer. While difficult to diagnose, about 900 cases of CBD have been reported since a Beryllium Case Registry was established in 1952. The Department of Energy (DOE) estimates that about 10,000 DOE employees and 800,000 people in private industry have worked with beryllium.

  12. A new holographic limit of AdS5 x S5

    E-Print Network [OSTI]

    Machiko Hatsuda; Warren Siegel

    2003-02-06T23:59:59.000Z

    We re-examine the projective lightcone limit of the gauge-invariant Green-Schwarz action on 5D anti-de Sitter x the five-sphere. It implies the usual holography for AdS5, but also (a complex) one for S5. The result is N=4 projective superspace, which unlike N=4 harmonic superspace can describe N=4 super Yang-Mills off shell.

  13. New ${\\cal N} = 1$ supersymmetric $AdS_5$ backgrounds in Type IIA supergravity

    E-Print Network [OSTI]

    Konstadinos Sfetsos; Daniel C. Thompson

    2014-08-27T23:59:59.000Z

    We present a family of N=1 supersymmetric backgrounds in type-IIA supergravity and their lifts to eleven-dimensional supergravity. These are of the form $AdS_5 \\times X^5$ and are characterised by an $SU(2)$ structure. The internal space, $X^5$, is obtained from the known Sasaki-Einstein manifolds, $Y^{p,q}$, via an application of non-Abelian T-duality.

  14. ARM KAZR-ARSCL Value Added Product

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jensen, Michael

    The Ka-band ARM Zenith Radars (KAZRs) have replaced the long-serving Millimeter Cloud Radars, or MMCRs. Accordingly, the primary MMCR Value Added Product (VAP), the Active Remote Sensing of CLouds (ARSCL) product, is being replaced by a KAZR-based version, the KAZR-ARSCL VAP. KAZR-ARSCL provides cloud boundaries and best-estimate time-height fields of radar moments.

  15. Adding coal dust to coal batch

    SciTech Connect (OSTI)

    V.S. Shved; A.V.Berezin [OAO Koks, Kemerovo (Russian Federation)

    2009-05-15T23:59:59.000Z

    The granulometric composition of coke dust from the dry-slaking machine is determined. The influence of additions of 3-7% coke dust on the quality of industrial coking batch and the coke obtained by box coking is estimated. Adding 1% coke dust to coking batch does not markedly change the coke quality. Industrial equipment for the supply of dry-slaking dust to the batch is described.

  16. Merged Sounding Value-Added Product

    SciTech Connect (OSTI)

    Troyan, D

    2010-03-03T23:59:59.000Z

    The Merged Sounding value-added product (VAP) uses a combination of observations from radiosonde soundings, the microwave radiometer (MWR), surface meteorological instruments, and European Centre for Medium-Range Weather Forecasts (ECMWF) model output with a sophisticated scaling/interpolation/smoothing scheme in order to define profiles of the atmospheric thermodynamic state at one-minute temporal intervals and a total of 266 altitude levels.

  17. Entropy of near-extremal black holes in AdS5

    SciTech Connect (OSTI)

    Simon, Joan; Balasubramanian, Vijay; de Boer, Jan; Jejjala, Vishnu; Simon, Joan

    2007-07-24T23:59:59.000Z

    We construct the microstates of near-extremal black holes in AdS_5 x S5 as gases of defects distributed in heavy BPS operators in the dual SU(N) Yang-Mills theory. These defects describe open strings on spherical D3-branes in the S5, and we show that they dominate the entropy by directly enumerating them and comparing the results with a partition sum calculation. We display new decoupling limits in which the field theory of the lightest open strings on the D-branes becomes dual to a near-horizon region of the black hole geometry. In the single-charge black hole we find evidence for an infrared duality between SU(N) Yang-Mills theories that exchanges the rank of the gauge group with an R-charge. In the two-charge case (where pairs of branes intersect on a line), the decoupled geometry includes an AdS_3 factor with a two-dimensional CFT dual. The degeneracy in this CFT accounts for the black hole entropy. In the three-charge case (where triples of branes intersect at a point), the decoupled geometry contains an AdS_2 factor. Below a certain critical mass, the two-charge system displays solutions with naked timelike singularities even though they do not violate a BPS bound. We suggest a string theoretic resolution of these singularities.

  18. ADS: The Next Generation Search Platform

    E-Print Network [OSTI]

    Accomazzi, Alberto; Henneken, Edwin A; Chyla, Roman; Luker, James; Grant, Carolyn S; Thompson, Donna M; Holachek, Alexandra; Dave, Rahul; Murray, Stephen S

    2015-01-01T23:59:59.000Z

    Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional functionality that we are currently developing. Starting in 2011, the ADS started to systematically collect, parse and index full-text documents for all the major publications in Physics and Astronomy as well as many smaller Astronomy journals and arXiv e-prints, for a total of over 3.5 million papers. Our citation coverage has doubled since 2010 and now consists of over 70 million citations. We are normalizing the affiliation information in our records and, in collaboration with the CfA library and NASA, we have started collecting and linking funding sources with papers in our system. At the same time, we are undergoing major technology changes in the ADS platform which affect all aspects of the system and its operations. We hav...

  19. Bullous Lung Disease

    E-Print Network [OSTI]

    Goldberg, Corey; Carey, Kathleen E

    2013-01-01T23:59:59.000Z

    thorascopic surgery. Bullous Lung Disease REFERENCES 1.S, Kaiser LR. Giant bullous lung disease: evaluation,for bullous disease of the lung. Eur J Cardiothorac Surg.

  20. Secret Symmetries of Type IIB Superstring Theory on AdS3 x S3 x M4

    E-Print Network [OSTI]

    Antonio Pittelli; Alessandro Torrielli; Martin Wolf

    2014-11-06T23:59:59.000Z

    We establish features of so-called Yangian secret symmetries for AdS3 type IIB superstring backgrounds thus verifying the persistence of such symmetries to this new instance of the AdS/CFT correspondence. Specifically, we find two a priori different classes of secret symmetry generators. One class of generators, anticipated from the previous literature, is more naturally embedded in the algebra governing the integrable scattering problem. The other class of generators is more elusive, and somewhat closer in its form to its higher-dimensional AdS5 counterpart. All of these symmetries respect left-right crossing. In addition, by considering the interplay between left and right representations, we gain a new perspective on the AdS5 case. We also study the RTT-realisation of the Yangian in AdS3 backgrounds thus establishing a new incarnation of the Beisert-de Leeuw construction.

  1. Retiree AD&D Insurance

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResources Resources About oneRethinking theAD&D

  2. Fermilab Today | Classified Ads | Archive - 2015

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. CategoryFebruaryFebruaryInThe, 2015Ads Subscribe | Contact

  3. ARM - Value-Added Products (VAP)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP Update Information on new, existing, and future value-added

  4. Oral curcumin for Alzheimer's disease: tolerability and efficacy in a 24-week randomized, double blind, placebo-controlled study

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    ters in the placebo group, seven in the 2 gm/day group, andsubjects in the placebo group, seven in the 2 gm/day group,

  5. Oral curcumin for Alzheimer's disease: tolerability and efficacy in a 24-week randomized, double blind, placebo-controlled study

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    in the 2 gm/day group, and eight in the 4 gm/day group. Twoin the 2 gm/day group, and for eight in the 4 gm/day group.

  6. Hormonal treatment, mild cognitive impairment and Alzheimer's disease Ryan Joanne , Scali Jaqueline , Carriere Isabelle , Ritchie Karen , Ancelin Marie-Laure *

    E-Print Network [OSTI]

    Boyer, Edmond

    lost at menopause would prevent many of the manifestations of aging, including osteoporosis systems implicated in cognition. Recent hormonal replacement therapy trials in non-demented post-menopausal to the widespread use of Hormone Replacement Therapy (HT) after the menopause, but following the recent publication

  7. Assessment of Alzheimer's disease risk with structural and functional magnetic resonance imaging : an arterial spin labeling study

    E-Print Network [OSTI]

    Bangen, Katherine J.

    2010-01-01T23:59:59.000Z

    Framingham Stroke Risk Pro?le (FSRP; D’Agostino, et al. ,1994). The FSRP is a validated scale that was developed torisk burden. The FSRP provides gender-corrected scores based

  8. A learning deficit related to age and b-amyloid plaques in a mouse model of Alzheimer's disease 

    E-Print Network [OSTI]

    Chen, Guiquan; Chen, Karen S; Knox, Jane H; Inglis, Jennifer; Bernard, Andrew; Martin, Stephen J; Justice, Alan; McConlogue, Lisa; Games, Dora; Freedman, Stephen B; Morris, Richard G M

    2000-12-21T23:59:59.000Z

    Mice that overexpress the human mutant amyloid precursor protein (hAPP) show learning deficits, but the apparent lack of a relationship between these deficits and the progressive b-amyloid plaque formation that the hAPP ...

  9. Supplemental Material to "Identifying Alzheimer's Disease-Related Brain Regions from Multi-Modality Neuroimaging Data using Sparse

    E-Print Network [OSTI]

    Li, Jing

    -Modality Neuroimaging Data using Sparse Composite Linear Discrimination Analysis" I ­ How does the formulation (5) serve

  10. ads spallation target: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and as a BPS state in the dual spacetime CFT. Finally, we attempt to apply the lessons learned to the description of BTZ black holes as AdS3 orbifolds and to related big crunch...

  11. added tax rate: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    budgetary expenses must be paid attention strictly. Because coefficients of value-added tax and corporate income tax are positive and significant, an increase in value-added tax...

  12. Managing On-air Ad Inventory in Broadcast Television

    E-Print Network [OSTI]

    Bollapragada, Srinivas; Mallik, Suman

    2008-01-01T23:59:59.000Z

    Motivated by the experiences of the National Broadcasting Company (NBC), we present an analytical model for managing on-air ad inventory in broadcast television. The ad inventory in this industry is priced based on rating ...

  13. Dynamic address allocation protocols for Mobile ad hoc networks

    E-Print Network [OSTI]

    Patchipulusu, Praveena

    2001-01-01T23:59:59.000Z

    Address allocation is an important issue in Mobile ad hoc networks. This thesis proposes solutions to assign unique IP addresses to nodes participating in Mobile ad hoc networks and evaluates the proposed solutions. Address allocation protocols...

  14. Holographic formula for the determinant of the scattering operator in thermal AdS

    E-Print Network [OSTI]

    Danilo E. Díaz

    2009-08-26T23:59:59.000Z

    A 'holographic formula' expressing the functional determinant of the scattering operator in an asymptotically locally anti-de Sitter(ALAdS) space has been proposed in terms of a relative functional determinant of the scalar Laplacian in the bulk. It stems from considerations in AdS/CFT correspondence of a quantum correction to the partition function in the bulk and the corresponding subleading correction at large N on the boundary. In this paper we probe this prediction for a class of quotients of hyperbolic space by a discrete subgroup of isometries. We restrict to the simplest situation of an abelian group where the quotient geometry describes thermal AdS and also the non-spinning BTZ instanton. The bulk computation is explicitly done using the method of images and the answer can be encoded in a (Patterson-)Selberg zeta-function.

  15. On Thermodynamics of AdS Black Holes in Arbitrary Dimensions

    E-Print Network [OSTI]

    A. Belhaj; M. Chabab; H. El Moumni; M. B. Sedra

    2012-09-23T23:59:59.000Z

    Considering the cosmological constant $\\Lambda$ as a thermodynamic pressure and its conjugate quantity as a thermodynamic volume as proposed in Kubiznak and Mann (2012), we discuss the critical behavior of charged AdS black hole in arbitrary dimensions $d$. In particular, we present a comparative study in terms of the spacetime dimension $d$ and the displacement of critical points controlling the transition between the small and the large black holes. Such behaviors vary nicely in terms of $d$. Among our result in this context consists in showing that the equation of state for a charged RN-AdS black hole predicts an universal number given by $\\frac{2d-5}{4d-8}$. The three dimensional solution is also discussed.

  16. Transition from AdS universe to DS universe in the BPP model

    E-Print Network [OSTI]

    Wontae Kim; Myungseok Yoon

    2007-03-03T23:59:59.000Z

    It can be shown that in the BPP model the smooth phase transition from the asymptotically decelerated AdS universe to the asymptotically accelerated DS universe is possible by solving the modified semiclassical equations of motion. This transition comes from noncommutative Poisson algebra, which gives the constant curvature scalars asymptotically. The decelerated expansion of the early universe is due to the negative energy density with the negative pressure induced by quantum back reaction, and the accelerated late-time universe comes from the positive energy and the negative pressure which behave like dark energy source in recent cosmological models.

  17. Aspects of Axion Phenomenology in a slice of AdS_5

    E-Print Network [OSTI]

    Thomas Flacke; David Maybury

    2006-12-11T23:59:59.000Z

    Motivated by multi-throat considerations, we study the phenomenological implications of a bulk axion in a slice of AdS_5 with a large extra dimension: k~0.01 eV, kR > 1. In particular, we compare axion physics with a warped geometry to axions in flat compactifications. As in flat compactification scenarios, we find that the mass of the axion can become independent from the underlying Peccei-Quinn scale. Surprisingly, we find that in warped extra dimensions the axion's invisibility, cosmological viability, and basic phenomenology remain essentially unaltered in comparison to axions in flat compactifications.

  18. Integrable $?$-deformations: Squashing Coset CFTs and $AdS_5\\times S^5$

    E-Print Network [OSTI]

    Saskia Demulder; Konstantinos Sfetsos; Daniel C. Thompson

    2015-04-10T23:59:59.000Z

    We examine integrable $\\lambda$-deformations of $SO(n+1)/SO(n)$ coset CFTs and their analytic continuations. We provide an interpretation of the deformation as a squashing of the corresponding coset $\\sigma$-model's target space. We realise the $\\lambda$-deformation for $n=5$ case as a solution to supergravity supported by non-vanishing five-form and dilaton. This interpolates between the coset CFT $SO(4,2)/SO(4,1)\\times SO(6)/SO(5)$ constructed as a gauged WZW model and the non-Abelian T-dual of the $AdS_5\\times S^5$ spacetime.

  19. Superconductors for superstrings on AdS_5 x T^{1,1}

    E-Print Network [OSTI]

    Francesco Aprile; Andrea Borghese; Aldo Dector; Diederik Roest; Jorge G. Russo

    2012-05-09T23:59:59.000Z

    We construct a one-parameter family of five-dimensional N=2 supergravity Lagrangians with an SU(2,1) / U(2) hypermultiplet. For certain values of the parameter, these are argued to describe the dynamics of scalar modes of superstrings on AdS_5 x T^{1,1}, and therefore to be dual to specific chiral primary operators of Klebanov-Witten superconformal field theory. We demonstrate that, below a critical temperature, the thermodynamics is dominated by charged black holes with hair for the scalars that are dual to the operator of lowest conformal dimension 3/2. The system thus enters into a superconducting phase where condenses.

  20. Geons and Spin-2 Condensates in the AdS Soliton

    E-Print Network [OSTI]

    Gavin S. Hartnett; Gary T. Horowitz

    2012-11-06T23:59:59.000Z

    We construct geons starting with gravitational perturbations of the AdS soliton. Previous studies of a charged scalar field in the soliton background showed a holographic insulator/superconductor transition at a critical chemical potential. We explore the possibility that dimensional reduction of the geon could model a transition to a d-wave superconductor. We find that although one does get a charged spin-2 condensate, it has higher free energy than the state without the condensate, so there is no phase transition.

  1. C-AD electron-cooling Photocathode and Laser

    E-Print Network [OSTI]

    C-AD electron-cooling Photocathode and Laser A. Burrill and T. Rao #12;C-AD electron system ­ Design of 2nd and third generation system · Laser system ­ Requirements ­ Commercial ­ Capsule fabrication · Brazing · Metallization #12;C-AD electron-cooling Overview Photocathode Requirements

  2. AUAARHUS UNIVERSITY Adding a bonus card AU Finance and Planning

    E-Print Network [OSTI]

    AUAARHUS UNIVERSITY Adding a bonus card AU Finance and Planning Financial Management 12/02/2013 Page 1 of 6 Guide to adding a bonus card in CWT's online system Log on to CWT: https://sso.carlsonwagonlit.com/login.do Type in your username and password Click on "Sign on" #12;AUAARHUS UNIVERSITY Adding a bonus card AU

  3. Mapping subtasks with multiple versions on an ad hoc grid

    E-Print Network [OSTI]

    Maciejewski, Anthony A.

    Mapping subtasks with multiple versions on an ad hoc grid S. Shivle a , P. Sugavanam a , H; Mapping; Resource allocation; Task scheduling 1. Introduction and problem statement An ad hoc grid; accepted 15 April 2005 Available online 16 June 2005 Abstract An ad hoc grid is a heterogeneous computing

  4. Review of AdS/CFT Integrability, Chapter IV.3: N=6 Chern-Simons and Strings on AdS4xCP3

    E-Print Network [OSTI]

    Thomas Klose

    2012-03-27T23:59:59.000Z

    We review the duality and integrability of N=6 superconformal Chern-Simons theory in three dimensions and IIA superstring theory on the background AdS4xCP3. We introduce both of these models and describe how their degrees of freedom are mapped to excitations of a long-range integrable spin-chain. Finally, we discuss the properties of the Bethe equations, the S-matrix and the algebraic curve that are special to this correspondence and differ from the case of N=4 SYM theory and strings on AdS5xS5.

  5. ITA CONFERENCE 1569048773 THREAT MODELLING FOR MOBILE AD HOC AND SENSOR NETWORKS 1 Threat Modelling for Mobile Ad Hoc and

    E-Print Network [OSTI]

    Sen, Sevil

    ITA CONFERENCE 1569048773 THREAT MODELLING FOR MOBILE AD HOC AND SENSOR NETWORKS 1 Threat Modelling. Chivers, Olwen Worthington and Pankaj Rohatgi Abstract-- This paper introduces a threat model for ad hoc and mobile ad hoc networks (MANETS). It identifies threat categories, modes of use, and a variety of threats

  6. Geometric free energy of toric AdS4/CFT3 models

    E-Print Network [OSTI]

    Sangmin Lee; Daisuke Yokoyama

    2015-01-22T23:59:59.000Z

    We study the supersymmetric free energy of three dimensional Chern-Simons-matter theories holographically dual to AdS$_4$ times toric Sasaki-Einstein seven-manifolds. In the large $N$ limit, we argue that the square of the free energy can be written as a quartic polynomial of trial R-charges. The coefficients of the polynomial are determined geometrically from the toric diagrams. We present the coefficients of the quartic polynomial explicitly for generic toric diagrams with up to 6 vertices, and some particular diagrams with 8 vertices. Decomposing the trial R-charges into mesonic and baryonic variables, and eliminating the baryonic ones, we show that the quartic polynomial reproduces the inverse of the Martelli-Sparks-Yau volume function. On the gravity side, we explore the possibility of using the same quartic polynomial as the prepotential in the AdS gauged supergravity. Comparing Kaluza-Klein gravity and gauged supergravity descriptions, we find perfect agreement in the mesonic sector but some discrepancy in the baryonic sector.

  7. Dual Superconformal Symmetry from AdS5 x S5 Superstring Integrability

    E-Print Network [OSTI]

    Niklas Beisert; Riccardo Ricci; Arkady Tseytlin; Martin Wolf

    2008-11-17T23:59:59.000Z

    We discuss 2d duality transformations in the classical AdS5 x S5 superstring and their effect on the integrable structure. T-duality along four directions in Poincare parametrization of AdS5 maps the bosonic part of the superstring action into itself. On bosonic level, this duality may be understood as a symmetry of the first-order (phase space) system of equations for the coset components of the current. The associated Lax connection is invariant modulo the action of an so(2,4)-automorphism. We then show that this symmetry extends to the full superstring, provided one supplements the transformation of the bosonic components of the current with a transformation on the fermionic ones. At the level of the action, this symmetry can be seen by combining the bosonic duality transformation with a similar one applied to part of the fermionic superstring coordinates. As a result, the full superstring action is mapped into itself, albeit in a different kappa-symmetry gauge. One implication is that the dual model has the same superconformal symmetry group as the original one, and this may be seen as a consequence of the integrability of the superstring. The invariance of the Lax connection under the duality implies a map on the full set of conserved charges that should interchange some of the Noether (local) charges with hidden (non-local) ones and vice versa.

  8. Shear Viscosity from AdS Born-Infeld Black Holes

    E-Print Network [OSTI]

    Rong-Gen Cai; Ya-Wen Sun

    2008-09-23T23:59:59.000Z

    We calculate the shear viscosity in the frame of AdS/CFT correspondence for the field theory with a gravity dual of Einstein-Born-Infeld gravity. We find that the ratio of $\\eta/s$ is still the conjectured universal value $1/4\\pi$ at least up to the first order of the Born-Infeld parameter $1/b^2$.

  9. Vacuum densities for a thick brane in AdS spacetime

    E-Print Network [OSTI]

    A. A. Saharian; A. L. Mkhitaryan

    2007-10-18T23:59:59.000Z

    For a massive scalar field with general curvature coupling parameter we evaluate Wightman function, vacuum expectation values of the field square and the energy-momentum tensor induced by a $Z_{2}$-symmetric brane with finite thickness located on $(D+1)$-dimensional AdS bulk. For the general case of static plane symmetric interior structure the expectation values in the region outside the brane are presented as the sum of free AdS and brane induced parts. For a conformally coupled massless scalar the brane induced part in the vacuum energy-momentum tensor vanishes. In the limit of strong gravitational fields the brane induced parts are exponentially suppressed for points not too close to the brane boundary. As an application of general results a special model is considered in which the geometry inside the brane is a slice of the Minkowski spacetime orbifolded along the direction perpendicular to the brane. For this model the Wightman function, vacuum expectation values of the field square and the energy-momentum tensor inside the brane are evaluated. It is shown that for both minimally and conformally coupled scalar fields the interior vacuum forces acting on the brane boundaries tend to decrease the brane thickness.

  10. A paucity of bulk entangling surfaces: AdS wormholes with de Sitter interiors

    E-Print Network [OSTI]

    Sebastian Fischetti; Donald Marolf; Aron Wall

    2014-09-23T23:59:59.000Z

    We study and construct spacetimes, dubbed planar AdS-dS-wormholes, satisfying the null energy condition and having two asymptotically AdS boundaries connected through a (non-traversable) inflating wormhole. As for other wormholes, it is natural to expect dual descriptions in terms of two disconnected CFTs in appropriate entangled states. But for our cases certain expected bulk entangling surfaces used by the Hubeny-Rangamani-Takayanagi (HRT) prescription to compute CFT entropy do not exist. In particular, no real codimension-2 extremal surface can run from one end of the wormhole to the other. According to HRT, the mutual information between any two finite-sized subregions (one in each CFT) must then vanish at leading order in large $N$ -- though the leading-order mutual information per unit area between the two CFTs taken as wholes may be nonzero. Some planar AdS-dS-wormholes also fail to have plane-symmetric surfaces that would compute the total entropy of either CFT. We suggest this to remain true of less-symmetric surfaces so that the HRT entropy is ill-defined and some modified prescription is required. It may be possible to simply extend HRT or the closely-related maximin construction by a limiting procedure, though complex extremal surfaces could also play an important role.

  11. Aerosol Best Estimate Value-Added Product

    SciTech Connect (OSTI)

    Flynn, C; Turner, D; Koontz, A; Chand, D; Sivaraman, C

    2012-07-19T23:59:59.000Z

    The objective of the Aerosol Best Estimate (AEROSOLBE) value-added product (VAP) is to provide vertical profiles of aerosol extinction, single scatter albedo, asymmetry parameter, and Angstroem exponents for the atmospheric column above the Central Facility at the ARM Southern Great Plains (SGP) site. We expect that AEROSOLBE will provide nearly continuous estimates of aerosol optical properties under a range of conditions (clear, broken clouds, overcast clouds, etc.). The primary requirement of this VAP was to provide an aerosol data set as continuous as possible in both time and height for the Broadband Heating Rate Profile (BBHRP) VAP in order to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Even though BBHRP has been completed, AEROSOLBE results are very valuable for environmental, atmospheric, and climate research.

  12. Conformal Transformations and Strings for an Accelerating Quark-Antiquark Pair in AdS3

    E-Print Network [OSTI]

    Shijong Ryang

    2014-12-08T23:59:59.000Z

    From a simple moving open string solution dual to a moving heavy quark with constant velocity in the Poincare AdS_3 spacetime, we construct an accerlerating open string solution dual to a heavy quark-antiquark pair accelerated in opposite directions by performing the three mappings such as the SL(2,R)_L x SL(2,R)_R isometry transformation, the special conformal transformation and the conformal SO(2,2) transformation. Using the string sigma model action we construct two open string solutions staying in two different regions whose dividing line is associated with the event horizon appeared on the string worldsheet and obtain the accelerating open string solution by gluing two such solutions.

  13. The S-matrix of the AdS5 x S5 superstring

    E-Print Network [OSTI]

    Marius de Leeuw

    2010-07-28T23:59:59.000Z

    In this article we review the world-sheet scattering theory of strings on AdS 5 x S5. The asymptotic spectrum of this world-sheet theory contains both fundamental particles and bound states of the latter. We explicitly derive the S-matrix that describes scattering of arbitrary bound states. The key feature that enables this derivation is the so-called Yangian symmetry which is related to the centrally extended su(2|2) superalgebra. Subsequently, we study the universal algebraic properties of the found S-matrix. As in many integrable models, the S-matrix plays a key role in the determination of the energy spectrum. In this context, we employ the Bethe ansatz approach to compute the large volume energy spectrum of string bound states.

  14. The Bound State S-Matrix for AdS5 x S5 Superstring

    E-Print Network [OSTI]

    Gleb Arutyunov; Marius de Leeuw; Alessandro Torrielli

    2011-08-24T23:59:59.000Z

    We determine the S-matrix that describes scattering of arbitrary bound states in the light-cone string theory in AdS5 x S5. The corresponding construction relies on the Yangian symmetry and the superspace formalism for the bound state representations. The basic analytic structure supporting the S-matrix entries turns out to be the hypergeometric function 4F3. We show that for particular bound state numbers it reproduces all the scattering matrices previously obtained in the literature. Our findings should be relevant for the TBA and Luescher approaches to the finite-size spectral problem. They also shed some light on the construction of the universal R-matrix for the centrally-extended psu(2|2) superalgebra.

  15. A derivative-free optimization method to compute scalar perturbation of AdS black holes

    E-Print Network [OSTI]

    Rodrigo S. Lima; Alan B. Pavan

    2014-03-25T23:59:59.000Z

    In this work we describe an interesting application of a simple derivative-free optimization method to extract the quasinormal modes (QNM's) of a massive scalar field propagating in a 4-dimensional Schwarzschild anti-de Sitter black hole (Sch-AdS$_4$). In this approach, the problem to find the QNM's is reduced to minimize a real valued function of two variables and does not require any information about derivatives. In fact, our strategy requires only evaluations of the objective function to search global minimizers of the optimization problem. Firstly, numerical experiments were performed to find the QNM's of a massless scalar field propagating in intermediate and large Sch-AdS$_4$ black holes. The performance of this optimization algorithm was compared with other numerical methods used in previous works. Our results showed to be in good agreement with those obtained previously. Finally, the massive scalar field case and its QNM's were also obtained and discussed.

  16. AdS Boundary Conditions and the Topologically Massive Gravity/CFT Correspondence

    SciTech Connect (OSTI)

    Skenderis, Kostas; Taylor, Marika; Rees, Balt C. van [Institute for Theoretical Physics, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands)

    2009-12-15T23:59:59.000Z

    The AdS/CFT correspondence provides a new perspective on recurrent questions in General Relativity such as the allowed boundary conditions at infinity and the definition of gravitational conserved charges. Here we review the main insights obtained in this direction over the last decade and apply the new techniques to Topologically Massive Gravity. We show that this theory is dual to a non-unitary CFT for any value of its parameter mu and becomes a Logarithmic CFT at mu = 1.

  17. Geography-informed Energy Conservation for Ad Hoc Routing

    E-Print Network [OSTI]

    Xu, Ya; Heidemann, John; Estrin, D

    2001-01-01T23:59:59.000Z

    Geography-informed Energy Conservation for Ad Hoc Routingof network lifetime, energy conservation, and data deliverypowers node off for energy conservation while G A F - m a

  18. Money Market Mutual Funds: An Experiement in Ad Hoc Deregulation

    E-Print Network [OSTI]

    Rosen, Kenneth T.; Katz, Lawrence

    1981-01-01T23:59:59.000Z

    of the market. A full deregulation of the deposit marketsity range. Full deregulation of financial institutions will,periment in ad hoc deregulation. -29- APPENDIX 1 . §Money

  19. ads harvesting agent: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    agent programming languages Peter Novk, Jrgen Dix IfI Technical Report Series Zachmann (Computer Graphics) 12;Adding structure to agent programming languages Peter...

  20. Maximizing the throughput of large ad hoc wireless networks

    E-Print Network [OSTI]

    Hua, Yingbo; Huang, Yi; J, Garcia-Luna-Aceves J

    2006-01-01T23:59:59.000Z

    The transport capacity of wireless networks over fadingimprovement of ad hoc wireless networks using directionalThe capacity of wireless networks,” IEEE Trans. Inform.

  1. DOE Announces Webinars on Adding Solar to Your Building Portfolio...

    Broader source: Energy.gov (indexed) [DOE]

    typically required. You can also watch archived webinars and browse previously aired videos, slides, and transcripts. Upcoming Webinars March 4: Live Webinar on Adding Solar...

  2. (A)dS Holography with a Cut-off

    E-Print Network [OSTI]

    Debajyoti Sarkar

    2014-10-09T23:59:59.000Z

    We find out the smearing/ transfer functions that relate a local bulk operator with its boundary values at a cut-off surface located at $z=z_0$ of the AdS Poincar\\'{e} patch. We compare these results with de Sitter counterparts and comment on their connections with corresponding construction for dS/ CFT. As the boundary values can help define the required field theory at $z=z_0$ and encode bulk locality in terms of it, our work can provide key information about holographic RG in the context of AdS/ CFT.

  3. On the short string limit of the folded spinning string in AdS5 x S5

    E-Print Network [OSTI]

    M. Beccaria; A. Tirziu

    2008-10-23T23:59:59.000Z

    In this paper we generalize the results of arXiv:0806.4758 to non-zero value J of angular momentum in S^5. We compute the 1-loop correction to the energy of the folded spinning string in AdS_5 x S^5 in the particular limit of slow short string approximation. In this limit the string is moving in a near-flat central region of AdS_5 slowly rotating in both AdS_5 and S^5. The one-loop correction should represent the first subleading correction to strong coupling expansion of the anomalous dimension of short gauge theory operators of the form Tr D^S Z^J in the SL(2) sector.

  4. Universal slow fall-off to the unique AdS infinity in Einstein-Gauss-Bonnet gravity

    SciTech Connect (OSTI)

    Maeda, Hideki [Centro de Estudios Cientificos (CECS), Arturo Prat 514, Valdivia (Chile)

    2008-08-15T23:59:59.000Z

    In this paper, the following two propositions are proven under the dominant energy condition for the matter field in the higher-dimensional spherically symmetric spacetime in Einstein-Gauss-Bonnet gravity in the presence of a cosmological constant {lambda}. First, for {lambda}{<=}0 and {alpha}{>=}0 without a fine-tuning to give a unique anti-de Sitter (AdS) vacuum, where {alpha} is the Gauss-Bonnet coupling constant, vanishing generalized Misner-Sharp mass is equivalent to the maximally symmetric spacetime. Under the fine-tuning, it is equivalent to the vacuum class I spacetime. Second, under the fine-tuning with {alpha}>0, the asymptotically AdS spacetime in the higher-dimensional Henneaux-Teitelboim sense is only a special class of the vacuum class I spacetime. This means the universal slow fall-off to the unique AdS infinity in the presence of physically reasonable matter.

  5. Label-Free Quantitative LC?MS Proteomics of Alzheimer&rsquo...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (p-values <0.05, corrected for multiplicity of testing) in AD versus control brain samples. Thirty-seven of these proteins were reported as differentially abundant or...

  6. Molecular Bioinformatics for Diseases

    E-Print Network [OSTI]

    Radivojac, Predrag

    . Curr Opin Pediatr, 13: 22 (2001). Leads to sickle cell anemia Manifestation of disease vastly different

  7. Kidney Disease of Diabetes

    E-Print Network [OSTI]

    Baker, Chris I.

    Kidney Disease of Diabetes National Kidney and Urologic Diseases Information Clearinghouse is the final stage of chronic kidney disease (CKD). Diabetes is the most common cause of kidney failure, accounting for nearly 44 percent of new cases.1 Even when diabetes is controlled, the disease can lead to CKD

  8. Developing Louisiana's Forest Products Industry: Adding Value for the Future

    E-Print Network [OSTI]

    of a manufacturingThe increased value at each stage of a manufacturing assembly processassembly process Those and necessaryimportant and necessary Addition of net economic valueAddition of net economic value Value can be added through manufacturing orValue can be added through manufacturing or marketingmarketing Why Add Value

  9. A EUROPEAN ADVANCED TECHNOLOGY PROGRAMME FOR ADS ACCELERATOR DEVELOPMENT*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    associated to a fast digital feedback system. A programme for the remaining R&D, focused on experimental as such a reactor. Consecutive to the initial work of the Technical Working Group on ADS technology [1], the project in 2002 [2], and studied 3 versions of an XADS: both a molten-metal (eutectic Pb-Bi) and a gas cooled ADS

  10. Reception-Aware Power Control in Ad Hoc Mobile Networks

    E-Print Network [OSTI]

    Mans, Bernard

    Reception-Aware Power Control in Ad Hoc Mobile Networks Nirisha Shrestha and Bernard Mans Macquarie resource in ad hoc mobile networks, mak- ing power control a popular, yet crucial, technique. The network of power control non-trivial. For sake of simplicity, most existing power control protocols only consider

  11. Stimulating Cooperative Diversity in Wireless Ad Hoc Networks through Pricing

    E-Print Network [OSTI]

    Adve, Raviraj

    Stimulating Cooperative Diversity in Wireless Ad Hoc Networks through Pricing Naveen Shastry in commercial wireless ad hoc networks. For the relay, cooperation represents both a real cost of energy a pricing game that stimulates cooperation via reimbursements to the relay. Specifically, given the price

  12. Multipath Routing Based Secure Data Transmission in Ad Hoc Networks

    E-Print Network [OSTI]

    Delgado-Frias, José G.

    Multipath Routing Based Secure Data Transmission in Ad Hoc Networks Li Zhao and José G. Delgado in the networks. In this paper, we present and evaluate a scheme, in which multipath routing combined the single path DSR. Index Terms--security, data transmission, multipath routing, ad hoc networks I

  13. Characteristic length of an AdS/CFT superconductor

    E-Print Network [OSTI]

    Kengo Maeda; Takashi Okamura

    2008-10-30T23:59:59.000Z

    We investigate in more detail the holographic model of a superconductor recently found by Hartnoll, Herzog, and Horowitz [Phys. Rev. Lett. 101, 031601], which is constructed from a condensate of a charged scalar field in AdS_4-Schwarzschild background. By analytically studying the perturbation of the gravitational system near the critical temperature T_c, we obtain the superconducting coherence length proportional to 1/\\sqrt{1-T/T_c} via AdS/CFT correspondence. By adding a small external homogeneous magnetic field to the system, we find that a stationary diamagnetic current proportional to the square of the order parameter is induced by the magnetic field. These results agree with Ginzburg-Landau theory and strongly support the idea that a superconductor can be described by a charged scalar field on a black hole via AdS/CFT duality.

  14. Dynamics and BPS states of AdS5 supergravity with a Gauss-Bonnet term

    E-Print Network [OSTI]

    Olivera Miskovic; Ricardo Troncoso; Jorge Zanelli

    2006-03-23T23:59:59.000Z

    Some dynamical aspects of five-dimensional supergravity as a Chern-Simons theory for the SU(2,2|N) group, are analyzed. The gravitational sector is described by the Einstein-Hilbert action with negative cosmological constant and a Gauss-Bonnet term with a fixed coupling. The interaction between matter and gravity is characterized by intricate couplings which give rise to dynamical features not present in standard theories. Depending on the location in phase space, the dynamics can possess different number of propagating degrees of freedom, including purely topological sectors. This inhomogeneity of phase space requires special care in the analysis. Background solutions in the canonical sectors, which have regular dynamics with maximal number of degrees of freedom, are shown to exist. Within this class, explicit solutions given by locally AdS spacetimes with nontrivial gauge fields are constructed, and BPS states are identified. It is shown that the charge algebra acquires a central extension due to the presence of the matter fields. The Bogomol'nyi bound for these charges is discussed. Special attention is devoted to the N=4 case since then the gauge group has a U(1) central charge and the phase space possesses additional irregular sectors.

  15. Classical and Quantum Equations of Motion for a BTZ Black String in AdS Space

    E-Print Network [OSTI]

    Eric Greenwood; Evan Halstead; Peng Hao

    2010-01-24T23:59:59.000Z

    We investigate gravitational collapse of a $(3+1)$-dimensional BTZ black string in AdS space in the context of both classical and quantum mechanics. This is done by first deriving the conserved mass per unit length of the cylindrically symmetric domain wall, which is taken as the classical Hamiltonian of the black string. In the quantum mechanical context, we take primary interest in the behavior of the collapse near the horizon and near the origin (classical singularity) from the point of view of an infalling observer. In the absence of radiation, quantum effects near the horizon do not change the classical conclusions for an infalling observer, meaning that the horizon is not an obstacle for him/her. The most interesting quantum mechanical effect comes in when investigating near the origin. First, quantum effects are able to remove the classical singularity at the origin, since the wave function is non-singular at the origin. Second, the Schr\\"odinger equation describing the behavior near the origin displays non-local effects, which depend on the energy density of the domain wall. This is manifest in that derivatives of the wavefunction at one point are related to the value of the wavefunction at some other distant point.

  16. An Integrable Deformation of the AdS5 x S5 Superstring

    E-Print Network [OSTI]

    Timothy J. Hollowood; J. Luis Miramontes; David M. Schmidtt

    2014-09-24T23:59:59.000Z

    The S-matrix on the world-sheet theory of the string in AdS5 x S5 has previously been shown to admit a deformation where the symmetry algebra is replaced by the associated quantum group. The case where q is real has been identified as a particular deformation of the Green-Schwarz sigma model. An interpretation of the case with q a root of unity has, until now, been lacking. We show that the Green-Schwarz sigma model admits a discrete deformation which can be viewed as a rather simple deformation of the F/F_V gauged WZW model, where F=PSU(2,2|4). The deformation parameter q is then a k-th root of unity where k is the level. The deformed theory has the same equations-of-motion as the Green-Schwarz sigma model but has a different symplectic structure. We show that the resulting theory is integrable and has just the right amount of kappa-symmetries that appear as a remnant of the fermionic part of the original gauge symmetry. This points to the existence of a fully consistent deformed string background.

  17. An Integrable Deformation of the AdS5 x S5 Superstring

    E-Print Network [OSTI]

    Hollowood, Timothy J; Schmidtt, David

    2014-01-01T23:59:59.000Z

    The S-matrix on the world-sheet theory of the string in AdS5 x S5 has previously been shown to admit a deformation where the symmetry algebra is replaced by the associated quantum group. The case where q is real has been identified as a particular deformation of the Green-Schwarz sigma model. An interpretation of the case with q a root of unity has, until now, been lacking. We show that the Green-Schwarz sigma model admits a discrete deformation which can be viewed as a rather simple deformation of the F/F gauged WZW model, where F=PSU(2,2|4). The deformation parameter q is then a k-th root of unity where k is the level. The deformed theory has the same equations-of-motion as the Green-Schwarz sigma model but has a different symplectic structure. We show that the resulting theory is integrable and has just the right amount of kappa-symmetries that appear as a remnant of the fermionic part of the original gauge symmetry. This points to the existence of a fully consistent deformed string background.

  18. Gribov ambiguity in asymptotically AdS three-dimensional gravity

    SciTech Connect (OSTI)

    Anabalon, Andres [Departamento de Ciencias, Facultad de Artes Liberales, Facultad de Ingenieria y Ciencias, Universidad Adolfo Ibanez, Vina Del Mar (Chile); Canfora, Fabrizio [Centro de Estudios Cientificos (CECS), Casilla 1469, Valdivia (Chile); Giacomini, Alex; Oliva, Julio [Instituto de Fisica, Facultad de Ciencias, Universidad Austral de Chile, Valdivia (Chile)

    2011-03-15T23:59:59.000Z

    In this paper the zero modes of the de Donder gauge Faddeev-Popov operator for three-dimensional gravity with negative cosmological constant are analyzed. It is found that the AdS{sub 3} vacuum produces (infinitely many) normalizable smooth zero modes of the Faddeev-Popov operator. On the other hand, it is found that the Banados-Teitelboim-Zanelli black hole (including the zero mass black hole) does not generate zero modes. This differs from the usual Gribov problem in QCD where, close to the maximally symmetric vacuum, the Faddeev-Popov determinant is positive definite while 'far enough' from the vacuum it can vanish. This suggests that the zero mass Banados-Teitelboim-Zanelli black hole could be a suitable ground state of three-dimensional gravity with negative cosmological constant. Because of the kinematic origin of this result, it also applies for other covariant gravity theories in three dimensions with AdS{sub 3} as maximally symmetric solution, such as new massive gravity and topologically massive gravity. The relevance of these results for supersymmetry breaking is pointed out.

  19. Picturing the brain from different perspectives: the neuroimaging of early AD The last 150 years have witnessed dramatic improvements in the field of what we

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EDITORIAL Picturing the brain from different perspectives: the neuroimaging of early AD The last. The description of the clinical and cognitive signs of specific brain diseases, as well as our understanding of normal brain function have been considerably improved, thanks to research ranging from anatomoclinical

  20. New $AdS_3 \\times S^2$ T-duals with $\\mathcal{N} = (0,4)$ supersymmetry

    E-Print Network [OSTI]

    Yolanda Lozano; Niall T. Macpherson; Jesús Montero; Eoin Ó Colgáin

    2015-07-09T23:59:59.000Z

    It is well known that Hopf-fibre T-duality and uplift takes the D1-D5 near-horizon into a class of $AdS_3 \\times S^2$ geometries in 11D where the internal space is a Calabi-Yau three-fold. Moreover, supersymmetry dictates that Calabi-Yau is the only permissible $SU(3)$-structure manifold. Generalising this duality chain to non-Abelian isometries, a strong parallel exists, resulting in the first explicit example of a class of $AdS_3 \\times S^2$ geometries with $SU(2)$-structure. Furthermore, the non-Abelian T-dual of $AdS_3 \\times S^3 \\times S^3 \\times S^1$ results in a new supersymmetric $AdS_3 \\times S^2$ geometry, which falls outside of all known classifications. We explore the basic properties of the holographic duals associated to the new backgrounds. We compute the central charges and show that they are compatible with a large $\\mathcal{N}=4$ superconformal algebra in the infra-red.

  1. Notes on beta-deformations of the pure spinor superstring in AdS(5) x S(5)

    E-Print Network [OSTI]

    Oscar A. Bedoya; L. Ibiapina Beviláqua; Andrei Mikhailov; Victor O. Rivelles

    2010-05-01T23:59:59.000Z

    We study the properties of the vertex operator for the beta-deformation of the superstring in AdS(5) x S(5) in the pure spinor formalism. We discuss the action of supersymmetry on the infinitesimal beta-deformation, the application of the homological perturbation theory, and the relation between the worldsheet description and the spacetime supergravity description.

  2. A generalization of the Lax pair for the pure spinor superstring in AdS5 x S5

    E-Print Network [OSTI]

    Andrei Mikhailov

    2013-08-09T23:59:59.000Z

    We show that the Lax pair of the pure spinor superstring in AdS5xS5 admits a generalization where the generators of the superconformal algebra are replaced by the generators of some infinite-dimensional Lie superalgebra.

  3. A generalization of the Lax pair for the pure spinor superstring in AdS5 x S5

    E-Print Network [OSTI]

    Mikhailov, Andrei

    2013-01-01T23:59:59.000Z

    We show that the Lax pair of the pure spinor superstring in AdS5xS5 admits a generalization where the generators of the superconformal algebra are replaced by the generators of some infinite-dimensional Lie superalgebra.

  4. Yangian Symmetry, S-Matrices and Bethe Ansatz for the AdS5 x S5 Superstring

    E-Print Network [OSTI]

    M de Leeuw

    2009-01-22T23:59:59.000Z

    We discuss the relation between the recently derived bound state S-matrices for the AdS5 x S5 superstring and Yangian symmetry. We will study the relation between this Yangian symmetry and the Bethe ansatz. In particular we can use it to derive the Bethe equations for bound states.

  5. Critical behavior of charged Gauss-Bonnet AdS black holes in the grand canonical ensemble

    E-Print Network [OSTI]

    Zou, De-Cheng; Wang, Bin

    2014-01-01T23:59:59.000Z

    We study the thermodynamics in the grand canonical ensemble of D-dimensional charged Gauss-Bonnet-AdS black holes in the extended phase space. We find that the usual small-large black hole phase transition, which exhibits analogy with the Van de Waals liquid-gas system holds in five-dimensional spherical charged Gauss-Bonnet-AdS black holes when its potential is fixed within the range $0Gauss-Bonnet-AdS black holes, there is no such phase transition. In the limiting case, Reissner-Nordstrom-AdS black holes, with vanishing Gauss-Bonnet parameter, there is no critical behavior in the grand canonical ensemble. This result holds independent of the spacetime dimensions and topologies. We also examine the behavior of physical quantities in the vicinity of the critical point in the five-dimensional spherical charged Gauss-Bonnet-AdS black holes.

  6. Critical behavior of charged Gauss-Bonnet AdS black holes in the grand canonical ensemble

    E-Print Network [OSTI]

    De-Cheng Zou; Yunqi Liu; Bin Wang

    2014-09-03T23:59:59.000Z

    We study the thermodynamics in the grand canonical ensemble of D-dimensional charged Gauss-Bonnet-AdS black holes in the extended phase space. We find that the usual small-large black hole phase transition, which exhibits analogy with the Van de Waals liquid-gas system holds in five-dimensional spherical charged Gauss-Bonnet-AdS black holes when its potential is fixed within the range $0Gauss-Bonnet-AdS black holes, there is no such phase transition. In the limiting case, Reissner-Nordstrom-AdS black holes, with vanishing Gauss-Bonnet parameter, there is no critical behavior in the grand canonical ensemble. This result holds independent of the spacetime dimensions and topologies. We also examine the behavior of physical quantities in the vicinity of the critical point in the five-dimensional spherical charged Gauss-Bonnet-AdS black holes.

  7. Role of paraoxonase 1 (PON1) in organophosphate metabolism: Implications in neurodegenerative diseases

    SciTech Connect (OSTI)

    Androutsopoulos, Vasilis P. [Center of Toxicology Science and Research, University of Crete, Heraklion, Crete (Greece)] [Center of Toxicology Science and Research, University of Crete, Heraklion, Crete (Greece); Kanavouras, Konstantinos [Laboratory of Neurological Sciences, University of Crete, Heraklion, Crete (Greece)] [Laboratory of Neurological Sciences, University of Crete, Heraklion, Crete (Greece); Tsatsakis, Aristidis M., E-mail: aris@med.uoc.gr [Center of Toxicology Science and Research, University of Crete, Heraklion, Crete (Greece)

    2011-11-15T23:59:59.000Z

    Organophosphate pesticides are a class of compounds that are widely used in agricultural and rural areas. Paraoxonase 1 (PON1) is a phase-I enzyme that is involved in the hydrolysis of organophosphate esters. Environmental poisoning by organophosphate compounds has been the main driving force of previous research on PON1 enzymes. Recent discoveries in animal models have revealed the important role of the enzyme in lipid metabolism. However although PON1 function is well established in experimental models, the contribution of PON1 in neurodegenerative diseases remains unclear. In this minireview we summarize the involvement of PON1 genotypes in the occurrence of Parkinson's disease, Alzheimer's disease and amyotrophic lateral sclerosis. A brief overview of latest epidemiological studies, regarding the two most important PON1 coding region polymorphisms PON1-L55M and PON1-Q192R is presented. Positive and negative associations of PON1 with disease occurrence are reported. Notably the MM and RR alleles contribute a risk enhancing effect for the development of some neurodegenerative diseases, which may be explained by the reduced lipoprotein free radical scavenging activity that may give rise to neuronal damage, through distinct mechanism. Conflicting findings that fail to support this postulate may represent the human population ethnic heterogeneity, different sample size and environmental parameters affecting PON1 status. We conclude that further epidemiological studies are required in order to address the exact contribution of PON1 genome in combination with organophosphate exposure in populations with neurodegenerative diseases.

  8. Noncommutative Extension of AdS-CFT and Holographic Superconductors

    E-Print Network [OSTI]

    Souvik Pramanik; Sudipta Das; Subir Ghosh

    2015-02-13T23:59:59.000Z

    In this Letter, we consider a Non-Commutative (NC) extension of AdS-CFT correspondence and its effects on holographic superconductors. NC corrections are incorporated via the NC generalization of Schwarzschild black hole metric in AdS with the probe limit. We study NC effects on the relations connecting the charge density and the critical temperature of the Holographic Superconductors. Furthermore, condensation operator of the superconductor has been analyzed. Our results suggest that generically, NC effects increase the critical temperature of the holographic superconductor.

  9. Amyloid Deposits: Protection Against Toxic Protein Species?

    E-Print Network [OSTI]

    Lindquist, Susan

    Neurodegenerative diseases ranging from Alzheimer’s disease and polyglutamine diseases to transmissible spongiform encephalopathies are associated with the aggregation and accumulation of misfolded proteins. In several ...

  10. Interim Chronic Beryllium Disease

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1999-12-08T23:59:59.000Z

    Establishes Departmental expectations for addressing chronic beryllium disease throughout the Department until a Departmental rule on beryllium is promulgated. This Notice was replaced by final rule 10 CFR Part 850, Chronic Beryllium Disease Prevention Program, published December 8, 1999.

  11. Quantum statistical relation for black holes in nonlinear electrodynamics coupled to Einstein-Gauss-Bonnet AdS gravity

    SciTech Connect (OSTI)

    Miskovic, Olivera; Olea, Rodrigo [Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Casilla 4059, Valparaiso (Chile)

    2011-03-15T23:59:59.000Z

    We consider curvature-squared corrections to Einstein-Hilbert gravity action in the form of a Gauss-Bonnet term in D>4 dimensions. In this theory, we study the thermodynamics of charged static black holes with anti-de Sitter (AdS) asymptotics, and whose electric field is described by nonlinear electrodynamics. These objects have received considerable attention in recent literature on gravity/gauge dualities. It is well-known that, within the framework of anti-de Sitter/conformal field theory (AdS/CFT) correspondence, there exists a nonvanishing Casimir contribution to the internal energy of the system, manifested as the vacuum energy for global AdS spacetime in odd dimensions. Because of this reason, we derive a quantum statistical relation directly from the Euclidean action and not from the integration of the first law of thermodynamics. To this end, we employ a background-independent regularization scheme which consists, in addition to the bulk action, of counterterms that depend on both extrinsic and intrinsic curvatures of the boundary (Kounterterm series). This procedure results in a consistent inclusion of the vacuum energy and chemical potential in the thermodynamic description for Einstein-Gauss-Bonnet AdS gravity regardless of the explicit form of the nonlinear electrodynamics Lagrangian.

  12. Poster: -Graphs: Flexible Topology Control in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Williamson, Carey

    Poster: -Graphs: Flexible Topology Control in Wireless Ad Hoc Networks Ashikur Rahman Department networks. Most algorithms strive to reduce energy consumption by cre- ating a sparse topology with few long of topologies and provides the flexibility to network

  13. ad hoc unmanned: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Abdel Ilah of the Unmanned Aerial Vehicle (UAV) Ad-Hoc net- work, the layered architecture is not flexible enough to achieve in the first three layers based on the aircraft...

  14. ads targeting public: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    system does not automatically search any patent databases so it is necessary for you to enter them manually. 1. On your Home screen click Oakley, Jeremy 2 Betrayed by Your Ads...

  15. T HE C ABLE Did the Swift Boat Ads

    E-Print Network [OSTI]

    Pritchard, Jonathan

    by Associate Professor Scott Ashworth on the 2004 Swift Boat television ad campaign and its influence on John of interdisciplinary research. Lifting a Family Legacy Timothy Hannegan, MPP'87, discusses how becoming one

  16. Nomadic Communications AA 2009/10 Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Nomadic Communications AA 2009/10 Vehicular Ad Hoc Networks 90% of this material is reproduced brakes before a collision Some 40% more do not brake effectively Road Accidents 41.600 fatalities 1

  17. Nomadic Communications AA 2010/11 Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Nomadic Communications AA 2010/11 Vehicular Ad Hoc Networks 90% of this material is reproduced brakes before a collision Some 40% more do not brake effectively Road Accidents 41.600 fatalities 1

  18. Nomadic Communications AA 2010/11 Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Nomadic Communications AA 2010/11 Vehicular Ad Hoc Networks 90% of this material is reproduced% of passengers vehicles and 26% of trucks do not activate brakes before a collision Some 40% more do not brake

  19. Nomadic Communications AA 2009/10 Vehicular Ad Hoc Networks

    E-Print Network [OSTI]

    Lo Cigno, Renato Antonio

    Nomadic Communications AA 2009/10 Vehicular Ad Hoc Networks 90% of this material is reproduced% of passengers vehicles and 26% of trucks do not activate brakes before a collision Some 40% more do not brake

  20. USDA Webinar: Value-Added Producer Grants for Tribal Entities

    Broader source: Energy.gov [DOE]

    Sponsored by the U.S. Department of Agriculture (USDA) Rural Development, this tribal-specific training will provide an overview of the FY14 Funding Opportunity and the Value-Added Producer Grants ...

  1. Topping Turbines: Adding New Life to Older Plants

    E-Print Network [OSTI]

    Cadrecha, M.

    1984-01-01T23:59:59.000Z

    An existing power plant can be repowered at a modest investment cost through a topping turbine installation. Essentially, this consists of replacing the existing old, low pressure boilers with new, high pressure boilers and adding a new, high...

  2. Missouri Value-Added Loan Guarantee Program (Missouri)

    Broader source: Energy.gov [DOE]

    The Missouri Value-Added Loan Guarantee Program provides a 50% first-loss guarantee to lenders who make agricultural business development loans for the acquisition, construction, improvement, or...

  3. User level routing for mobile ad hoc networks

    E-Print Network [OSTI]

    Virk, Navjot

    2001-01-01T23:59:59.000Z

    Many routing protocols have been proposed for mobile ad hoc networks. Traditionally routing protocols have been implemented in the kernel of the operating system. The main reasons for this are performance and security. This research explores...

  4. Topping Turbines: Adding New Life to Older Plants 

    E-Print Network [OSTI]

    Cadrecha, M.

    1984-01-01T23:59:59.000Z

    An existing power plant can be repowered at a modest investment cost through a topping turbine installation. Essentially, this consists of replacing the existing old, low pressure boilers with new, high pressure boilers and adding a new, high...

  5. adding e85 fueling: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    electricity, ethanol (E85), natural gas 8 DESIGN AND MODELLING OF OXIDE FUEL FOR INCINERATION OF AMERICIUM AND PLUTONIUM IN AN EXPERIMENTAL ADS CiteSeer Summary: The interest to...

  6. Modular Anomaly Detection for Smartphone Ad hoc Communication

    E-Print Network [OSTI]

    by the infrastructure-based technologies there are no major deploy- ments of ad hoc networks in every day scenarios, or rendered useless due to damages. Thus, message dissemination in disaster area networks using a phone

  7. Wood Products Marketing And Value-Added Opportunities

    E-Print Network [OSTI]

    Wood Products Marketing And Value-Added Opportunities In Latin America: A Focus on Brazil Richard School of Renewable Natural Resources Louisiana State University Presented at: PANORAMA Curitiba, Brazil

  8. Truthful resource management in wireless ad hoc networks

    E-Print Network [OSTI]

    Cai, Jianfeng

    2005-11-01T23:59:59.000Z

    In wireless mobile ad hoc networks (MANETs), cooperation cannot be an im- plicit assumption anymore. Each profit-oriented network node has the intention to be selfish due to limited resource possession. In this dissertation, we investigate...

  9. Cardiovascular Disease (CVD) Coronary heart disease

    E-Print Network [OSTI]

    Dever, Jennifer A.

    have a greater prevalence in women · Osteoporosis · Autoimmune disease A. Osteoporosis · Osteoporosis ­ disorder of low bone mass, microarchitectural denegra7on% of all women >65 years old have osteoporosis (15% of all Caucasian women

  10. The 2006 Harvard / Paul F. Glenn Symposium on Aging

    E-Print Network [OSTI]

    Church, George M.

    diseases of aging, such as diabetes, cancer, Alzheimer's and heart disease. A recent study1 concluded

  11. Published: December 30, 2010 r 2010 American Chemical Society 301 dx.doi.org/10.1021/cb1001729 |ACS Chem. Biol. 2011, 6, 301307

    E-Print Network [OSTI]

    Weiss, Gregory A.

    of diseases including Alzheimer's disease, muscular dystrophy, cancer, diabetes, obesity, and asthma,6

  12. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 1 High Specificity Binding of Lectins to

    E-Print Network [OSTI]

    Dagenais, Mario

    that affect mankind, including cancer, diabetes, heart diseases, infectious diseases, flu, Alzheimer

  13. June 17, 2013 Symposium on Aging

    E-Print Network [OSTI]

    Church, George M.

    to forestall and treat diseases of aging such as diabetes, cancer, Alzheimer's and heart disease. Today

  14. AdS/CFT and Exclusive Processes in QCD

    E-Print Network [OSTI]

    Stanley J. Brodsky; Guy F. de Teramond

    2007-09-13T23:59:59.000Z

    The AdS/CFT correspondence between string theory in AdS space and conformal field theories in physical space-time leads to an analytic, semi-classical model for strongly-coupled QCD which has scale invariance and dimensional counting at short distances and color confinement at large distances. One can use holography to map the amplitude describing the hadronic state in the fifth dimension of Anti-de Sitter space to the light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons in QCD at the amplitude level. In particular, we show that there is an exact correspondence between the fifth-dimensional coordinate of AdS space z and a specific impact variable zeta which measures the separation of the quark and gluonic constituents within the hadron in ordinary space-time. New relativistic light-front equations in ordinary space-time can then be derived which reproduce the results obtained using the 5-dimensional theory. The effective light-front equations possess elegant algebraic structures and integrability properties. This connection between the AdS and the light-front representations allows one to compute the analytic form of the frame-independent light-front wavefunctions, the fundamental entities which encode hadron properties and allow the computation of decay constants, form factors, deeply virtual Compton scattering, exclusive heavy hadron decays and other exclusive scattering amplitudes. As specific examples we compute the pion coupling constant and study the behavior of the pion form factor in the space and time-like regions. We also determine the Dirac form factors of the proton and neutron in the space-like region.

  15. ADS-B benefits to general aviation and barriers to implementation

    E-Print Network [OSTI]

    Kunzi, Fabrice

    2011-01-01T23:59:59.000Z

    Automatic Dependent Surveillance - Broadcast (ADS-B) will be the basis of the future surveillance system in the US. To achieve benefit from ADS-B, aircraft have to be equipped with ADS-B avionics across all stakeholders. ...

  16. Process and targets for production of no-carrier-added radiotin

    DOE Patents [OSTI]

    Srivastava, Suresh C; Zhuikov, Boris Leonidovich; Ermolaev, Stanislav Victorovich; Konyakhin, Nikolay Alexandrovich; Kokhanyuk, Vladimir Mikhailovich; Khamyanov, Stepan Vladimirovich; Togaeva, Natalya Roaldovna

    2014-04-22T23:59:59.000Z

    One embodiment of the present invention includes a process for production and recovery of no-carrier-added radioactive tin (NCA radiotin). An antimony target can be irradiated with a beam of accelerated particles forming NCA radiotin, followed by separation of the NCA radiotin from the irradiated target. The target is metallic Sb in a hermetically sealed shell. The shell can be graphite, molybdenum, or stainless steel. The irradiated target can be removed from the shell by chemical or mechanical means, and dissolved in an acidic solution. Sb can be removed from the dissolved irradiated target by extraction. NCA radiotin can be separated from the remaining Sb and other impurities using chromatography on silica gel sorbent. NCA tin-117m can be obtained from this process. NCA tin-117m can be used for labeling organic compounds and biological objects to be applied in medicine for imaging and therapy of various diseases.

  17. Top Value Added Chemicals from Biomass: Volume I--Results of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Top Value Added Chemicals from Biomass: Volume I--Results of Screening for Potential Candidates from Sugars and Synthesis Gas Top Value Added Chemicals from Biomass: Volume...

  18. Study of confinement/deconfinement transition in AdS/QCD with generalized warp factors

    E-Print Network [OSTI]

    Shobhit Sachan

    2014-08-22T23:59:59.000Z

    We study analytical solutions of charged black holes and thermally charged AdS with generalized warped factors in Einstein-Maxwell-Dilaton system. We calculate Euclidean action for charged AdS and thermally charged AdS. The actions in both backgrounds are regularized by the method of background subtraction. The study of phase transition between charged black hole and thermally charged AdS gives an insight to the confinement/deconfinement transition. The plots of grand potential vs temperature and chemical potential vs transition temperature are obtained.

  19. Electric Field Quench in AdS/CFT

    E-Print Network [OSTI]

    Koji Hashimoto; Shunichiro Kinoshita; Keiju Murata; Takashi Oka

    2014-07-03T23:59:59.000Z

    An electric field quench, a suddenly applied electric field, can induce nontrivial dynamics in confining systems which may lead to thermalization as well as a deconfinement transition. In order to analyze this nonequilibrium transitions,we use the AdS/CFT correspondence for $\\mathcal{N}=2$ supersymmetric QCD that has a confining meson sector. We find that the electric field quench causes the deconfinement transition even when the magnitude of the applied electric field is smaller than the critical value for the static case (which is the QCD Schwinger limit for quark-antiquark pair creation). The time dependence is crucial for this phenomenon, and the gravity dual explains it as an oscillation of a D-brane in the bulk AdS spacetime. Interestingly, the deconfinement time takes only discrete values as a function of the magnitude of the electric field. We advocate that the new deconfinement phenomenon is analogous to the exciton Mott transition.

  20. New Massive Gravity and AdS{sub 4} Counterterms

    SciTech Connect (OSTI)

    Jatkar, Dileep P. [Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad, 211019 (India); Sinha, Aninda [Centre for High Energy Physics, Indian Institute of Science, C. V. Raman Avenue, Bangalore 560012 (India)

    2011-04-29T23:59:59.000Z

    We show that the recently proposed Dirac-Born-Infeld extension of new massive gravity emerges naturally as a counterterm in four-dimensional anti-de Sitter space (AdS{sub 4}). The resulting on-shell Euclidean action is independent of the cutoff at zero temperature. We also find that the same choice of counterterm gives the usual area law for the AdS{sub 4} Schwarzschild black hole entropy in a cutoff-independent manner. The parameter values of the resulting counterterm action correspond to a c=0 theory in the context of the duality between AdS{sub 3} gravity and two-dimensional conformal field theory. We rewrite this theory in terms of the gauge field that is used to recast 3D gravity as a Chern-Simons theory.

  1. No-carrier-added [1.sup.11 c]putrescine

    DOE Patents [OSTI]

    McPherson, Daniel W. (Baltimore, MD); Fowler, Joanna S. (Bellport, NY); Wolf, Alfred P. (Setauket, NY)

    1989-01-01T23:59:59.000Z

    The invention relates to a new radiolabeled imaging agent, no-carrier-added [1-.sup.11 C]putrescine, and to the use of this very pure material as a radiotracer with positron emission tomography for imaging brain tumors. The invention further relates to the synthesis of no-carrier-added [1-.sup.11 C]putrescine based on the Michael addition of potassium .sup.11 C-labeled cyanide to acrylonitrile followed by reduction of the .sup.11 C-labeled dinitrile. The new method is rapid and efficient and provides radiotracer with a specific activity greater than 1.4 curies per millimol and in a purity greater than 95%.

  2. Non-extended phase space thermodynamics of Lovelock AdS black holes in grand canonical ensemble

    E-Print Network [OSTI]

    Jie-Xiong Mo; Wen-Biao Liu

    2015-03-06T23:59:59.000Z

    Recently, extended phase space thermodynamics of Lovelock AdS black holes has been of great interest. To provide insight from a different perspective and gain a unified phase transition picture, non-extended phase space thermodynamics of $(n+1)$-dimensional charged topological Lovelock AdS black holes is investigated detailedly in the grand canonical ensemble. Specifically, the specific heat at constant electric potential is calculated and phase transition in the grand canonical ensemble is discussed. To probe the impact of the various parameters, we utilize the control variate method and solve the phase transition condition equation numerically for the case $k=1,-1$. There are two critical points for the case $n=6,k=1$ while there is only one for other cases. For $k=0$, there exists no phase transition point. To figure out the nature of phase transition in the grand canonical ensemble, we carry out an analytic check of the analog form of Ehrenfest equations proposed by Banerjee et al. It is shown that Lovelock AdS black holes in the grand canonical ensemble undergo a second order phase transition. To examine the phase structure in the grand canonical ensemble, we utilize the thermodynamic geometry method and calculate both the Weinhold metric and Ruppeiner metric. It is shown that for both analytic and graphical results that the divergence structure of the Ruppeiner scalar curvature coincides with that of the specific heat. Our research provides one more example that Ruppeiner metric serves as a wonderful tool to probe the phase structures of black holes.

  3. A $\\mathcal{N}=2$ Supersymmetric $AdS_4$ Solution in M-theory with Purely Magnetic Flux

    E-Print Network [OSTI]

    Yolanda Lozano; Niall T. Macpherson; Jesús Montero

    2015-07-10T23:59:59.000Z

    We find a new $\\mathcal{N}=2$ $AdS_4$ solution in M-theory supported by purely magnetic flux via a sequence of abelian and non-abelian T-dualities. This provides the second known example in this class besides the uplift of the Pernici and Sezgin solution to 7d gauged supergravity constructed in the eighties. We compute the free energy of the solution, and show that it scales as $N^{3/2}$. It is intriguing that even though the natural holographic interpretation is in terms of M5-branes wrapped on a special Lagrangian 3-cycle, this solution does not exhibit the expected $N^3$ behavior.

  4. Bound States of the q-Deformed AdS5 x S5 Superstring S-matrix

    E-Print Network [OSTI]

    Ben Hoare; Timothy J. Hollowood; J. Luis Miramontes

    2012-05-31T23:59:59.000Z

    The investigation of the q deformation of the S-matrix for excitations on the string world sheet in AdS5 x S5 is continued. We argue that due to the lack of Lorentz invariance the situation is more subtle than in a relativistic theory in that the nature of bound states depends on their momentum. At low enough momentum |p|1. This subtlety fixes a problem involving the consistency of crossing symmetry with the relativistic limit found in earlier work. With mirror kinematics, obtained after a double Wick rotation, the bound state structure is simpler and there are no marginally unstable bound states.

  5. Bound States of the q-Deformed AdS5 x S5 Superstring S-matrix

    E-Print Network [OSTI]

    Hoare, Ben; Miramontes, J Luis

    2012-01-01T23:59:59.000Z

    The investigation of the q deformation of the S-matrix for excitations on the string world sheet in AdS5 x S5 is continued. We argue that due to the lack of Lorentz invariance the situation is more subtle than in a relativistic theory in that the nature of bound states depends on their momentum. At low enough momentum |p|1. This subtlety fixes a problem involving the consistency of crossing symmetry with the relativistic limit found in earlier work. With mirror kinematics, obtained after a double Wick rotation, the bound state structure is simpler and there are no marginally unstable bound states.

  6. Institute for Software Technology Ad anced RoboticsAdvanced Robotics

    E-Print Network [OSTI]

    Interaction #12;Institute for Software Technology Application Areas Gerald Steinbauer 3 Advanced RoboticsInstitute for Software Technology Ad anced RoboticsAdvanced Robotics Human Robot Interaction Gerald Steinbauer Institute for Software Technology Gerald Steinbauer 1 Advanced Robotics ­ Human Robot Interaction

  7. Building Intelligent Environments By Adding Smart Artifacts to Spaces

    E-Print Network [OSTI]

    Loke, Seng W. - Loke, Seng W.

    Building Intelligent Environments By Adding Smart Artifacts to Spaces: a Peer-to-Peer Architecture collections of smart artifacts, each artifact with an embedded processor, networking and sensing capabilities. The interactive capabilities of the environment are due to the collective working of the smart artifacts

  8. Operational Risk Management: Added Value of Advanced Methodologies

    E-Print Network [OSTI]

    Maume-Deschamps, Véronique

    Operational Risk Management: Added Value of Advanced Methodologies Paris, September 2013 Bertrand HASSANI Head of Major Risks Management & Scenario Analysis Santander UK Disclaimer: The opinions, ideas Measurement Key statements 1. Risk management moto: Si Vis Pacem Para Belum 1. Awareness 2. Prevention 3

  9. Connectivity Based Location Estimation Scheme for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Ramanathan, Parameswaran "Parmesh"

    Connectivity Based Location Estimation Scheme for Wireless Ad Hoc Networks Niveditha Sundaram. The loca- tion estimates rely on neighborhood relationships gathered by each user through message, form factors, energy consumption, etc., providing GPS support may not be feasible even in outdoor

  10. Smaller Connected Dominating Sets in Ad Hoc and Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Smaller Connected Dominating Sets in Ad Hoc and Sensor Networks based on Coverage by Two be broadcasting, where the size of the set greatly impacts on energy consumption. Obtaining small sets is thus is considered. In our new definition, a node u is not dominant if there exists in its 2- hop neighborhood

  11. 1 Antenna Beamforming and Power Control for Ad Hoc Networks

    E-Print Network [OSTI]

    Ramanathan, Ram

    1 Antenna Beamforming and Power Control for Ad Hoc Networks RAM RAMANATHAN BBN Technologies power, spreading code, and antenna beams. By controlling these transceiver parameters adaptively, coding, etc.) can also yield benefits, we shall focus on antenna and power control as they have been

  12. A Power Control MAC Protocol for Ad Hoc Networks

    E-Print Network [OSTI]

    A Power Control MAC Protocol for Ad Hoc Networks Eun-Sun Jung Dept. of Computer Science Texas A This paper presents a power control MAC protocol that al- lows nodes to vary transmit power level on a per control. The main idea of these power control schemes is to use different power lev- els for RTS

  13. Topology Control in Wireless Ad Hoc and Sensor PAOLO SANTI

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    - works to reduce energy consumption, which is essential to extend the network operational time. The goal, with the purpose of maintaining some global graph property (e.g., connectivity) while reducing energy consumption and Phrases: Connectivity, Energy consumption, Sensor networks, Topol- ogy control, Wireless ad hoc networks 1

  14. Real-Time Bid Optimization for Group-Buying Ads

    E-Print Network [OSTI]

    Balakrishnan, Raju

    2012-01-01T23:59:59.000Z

    Group-buying ads seeking a minimum number of customers before the deal expiry are increasingly used by the daily-deal providers. Unlike the traditional web ads, the advertiser's profits for group-buying ads depends on the time to expiry and additional customers needed to satisfy the minimum group size. Since both these quantities are time-dependent, optimal bid amounts to maximize profits change with every impression. Consequently, traditional static bidding strategies are far from optimal. Instead, bid values need to be optimized in real-time to maximize expected bidder profits. This online optimization of deal profits is made possible by the advent of ad exchanges offering real-time (spot) bidding. To this end, we propose a real-time bidding strategy for group-buying deals based on the online optimization of bid values. We derive the expected bidder profit of deals as a function of the bid amounts, and dynamically vary bids to maximize profits. Further, to satisfy time constraints of the online bidding, we ...

  15. Adding Parallel I/O to PARA-BMU 

    E-Print Network [OSTI]

    Johnson, Nick; Bethune, Iain

    2012-10-01T23:59:59.000Z

    VOX-FE is a voxel-based bone modelling suite. The solver part of the suite - PARA-BMU - currently uses only serial I/O routines which lead to poor scalability. We enhance the code by adding parallel I/O routines based on the netCDF and HDF5...

  16. EXTENDING UFDS TO PIDS WITHOUT ADDING UNITS KEITH A. KEARNES

    E-Print Network [OSTI]

    Kearnes, Keith A.

    EXTENDING UFDS TO PIDS WITHOUT ADDING UNITS KEITH A. KEARNES ABSTRACT. If U is a UFD, then there is a PID P containing U that has the same unit group as U. Moreover, P can be taken so that its field there is a PID P such that (i) P is a proper subring of the real numbers, (ii) P properly contains the ring

  17. Raman Lidar Profiles–Temperature (RLPROFTEMP) Value-Added Product

    SciTech Connect (OSTI)

    Newsom, RK; Sivaraman, C; McFarlane, SA

    2012-10-31T23:59:59.000Z

    The purpose of this document is to describe the Raman Lidar Profiles–Temperature (RLPROFTEMP) value-added product (VAP) and the procedures used to derive atmospheric temperature profiles from the raw RL measurements. Sections 2 and 4 describe the input and output variables, respectively. Section 3 discusses the theory behind the measurement and the details of the algorithm, including calibration and overlap correction.

  18. Managing Concurrent Execution of Transactions in Mobile Ad-hoc

    E-Print Network [OSTI]

    Gruenwald, Le

    : an Energy-Efficient Approach Zhaowen Xing University of Oklahoma School of Computer Science 110 West Boyd Systems: an Energy-Efficient Approach Abstract. A Mobile Ad-hoc Network (MANET) is a collection of mobile. In order to provide timely and correct results for multiple concurrent transactions, energy-efficient

  19. A Locationaided Poweraware Routing Protocol in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Nahrstedt, Klara

    ­hop wireless ad­hoc networks, designing energy­efficient rout­ ing protocols is critical since nodes are power be mobile, demanding the energy­efficient routing protocol to be fully distributed and adaptive­ spect to end­to­end energy­efficient routes. Finally, preliminary simulation results are presented

  20. Drug Information Chart Notes Drug ad (intrinsic bias)

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    Drug Information Chart Notes Drug ad (intrinsic bias) Trade name Different for each company Dosage Same or different? A drug in a different dosage can be used for a different therapy. Precautions Check for pregnancy A complete book on drugs in pregnancy and lactation in bibliography. (unbiased

  1. Adding Decision Procedures to SMT Solvers using Axioms with Triggers

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adding Decision Procedures to SMT Solvers using Axioms with Triggers Claire Dross Sylvain Conchon Johannes Kanig Andrei Paskevich December 9, 2013 Abstract SMT solvers are efficient tools to decide of a given SMT solver, and is done mainly by the developers of the solver itself. For many useful theories

  2. Energy Aware Implementation of an Ad Hoc Routing Protocol

    E-Print Network [OSTI]

    Brown, Timothy X.

    Energy Aware Implementation of an Ad Hoc Routing Protocol by Shweta Bhandare Scriptor B in Telecommunications Department of InterDisciplinary Telecommunications 2003 #12;This thesis entitled: Energy Aware mentioned discipline. #12;iii Scriptor, Shweta Bhandare (M.S., Telecommunications) Energy Aware

  3. adding carbon nanotubes: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    adding carbon nanotubes First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Carbon Nanotubes. Open Access...

  4. IFlemish AcadelmicCentre for Science and the Ads-

    E-Print Network [OSTI]

    Vertes, Akos

    IFlemish AcadelmicCentre for Science and the Ads- -Report 2004 I #12;Flemisch Academic Centre)icatwns. we B M ~CMI ~ n m t eU~WIa C B I I ~ ~ ~ O ~ the -b?ocMmi~'dlylartmsnttwo yam ago an# here the f w

  5. 1 Introduzione 5 2 La Fisica dei Quark Pesanti ad HERA 7

    E-Print Network [OSTI]

    calorimetro ad uranio--scintillatore (CAL) . . . . . . . . . . . . . . . 35 4.3.1 Risoluzione energetica e

  6. Adventures in Infectious Diseases

    ScienceCinema (OSTI)

    Fisher-Hoch, Susan [University of Texas School of Public Health

    2014-06-25T23:59:59.000Z

    Dr. Susan Fisher-Hoch, Virologist and Epidemiologist, will discuss her research and travels associated with viral hemorrhagic fevers. From the Ebola outbreak in Reston, Virginia to outbreaks of Crimean Congo Hemorrhagic Fever in South Africa, Senegal, and Saudi Arabia, Dr. Fisher-Hoch has studied and tracked the pathophysiology of these viral diseases. These studies have led her from the Center for Disease Control in the United States, to Lyon, France where she was instrumental in designing, constructing, and rendering operational a laboratory capable of containing some of the world's most dangerous diseases.

  7. Long-term associations between cholinesterase inhibitors and memantine use and health outcomes among patients with Alzheimer's

    E-Print Network [OSTI]

    , natural history study that included three university- based AD centers in the United States. A total of 201 patients diagnosed with probable AD with mod- ified Mini-Mental State Examination (MMSE) scores assessment, and time to cognitive (MMSE score 10) and functional (Blessed Dementia Rating Scale score 10

  8. Chronic Conditions and Disease Prevention

    E-Print Network [OSTI]

    , diabetes, heart disease and osteoarthritis. One-on-One Nutrition Counseling Help with weight management and supportive program for those who have chronic diseases such as diabetes, heart disease, stroke, arthritis

  9. Large scale disease prediction

    E-Print Network [OSTI]

    Schmid, Patrick R. (Patrick Raphael)

    2008-01-01T23:59:59.000Z

    The objective of this thesis is to present the foundation of an automated large-scale disease prediction system. Unlike previous work that has typically focused on a small self-contained dataset, we explore the possibility ...

  10. Health & Medicine Heart Disease

    E-Print Network [OSTI]

    Rogers, John A.

    See Also: Health & Medicine Heart Disease· Medical Imaging· Vioxx· Matter & Energy Electronics· Technology· Medical Technology· Reference Artificial heart· Biosensor· Circuit design· Machine· Science and stretchable electronics can map waves of electrical activity in the heart with better resolution and speed

  11. Application of AdS/CFT in Nuclear Physics

    E-Print Network [OSTI]

    M. R. Pahlavani; R. Morad

    2014-03-11T23:59:59.000Z

    We review some recent progress in studying the nuclear physics especially nucleon-nucleon (NN) force within the gauge-gravity duality, in context of noncritical string theory. Our main focus is on the holographic QCD model based on the $AdS_6$ background. We explain the noncritical holography model and obtain the vector-meson spectrum and pion decay constant. Also, we study the NN interaction in this frame and calculate the nucleon-meson coupling constants. A further topic covered is a toy model for calculating the light nuclei potential. In particular, we calculate the light nuclei binding energies and also excited energies of some available excited states. We compare our results with the results of other nuclear models and also with the experimental data. Moreover, we describe some other issues which are studied using the gauge-gravity duality.

  12. Organic Aerosol Component (OACOMP) Value-Added Product Report

    SciTech Connect (OSTI)

    Fast, J; Zhang, Q; Tilp, A; Shippert, T; Parworth, C; Mei, F

    2013-08-23T23:59:59.000Z

    Significantly improved returns in their aerosol chemistry data can be achieved via the development of a value-added product (VAP) of deriving OA components, called Organic Aerosol Components (OACOMP). OACOMP is primarily based on multivariate analysis of the measured organic mass spectral matrix. The key outputs of OACOMP are the concentration time series and the mass spectra of OA factors that are associated with distinct sources, formation and evolution processes, and physicochemical properties.

  13. A Natural Language for AdS/CFT Correlators

    SciTech Connect (OSTI)

    Fitzpatrick, A.Liam; /Boston U.; Kaplan, Jared; /SLAC; Penedones, Joao; /Perimeter Inst. Theor. Phys.; Raju, Suvrat; /Harish-Chandra Res. Inst.; van Rees, Balt C.; /YITP, Stony Brook

    2012-02-14T23:59:59.000Z

    We provide dramatic evidence that 'Mellin space' is the natural home for correlation functions in CFTs with weakly coupled bulk duals. In Mellin space, CFT correlators have poles corresponding to an OPE decomposition into 'left' and 'right' sub-correlators, in direct analogy with the factorization channels of scattering amplitudes. In the regime where these correlators can be computed by tree level Witten diagrams in AdS, we derive an explicit formula for the residues of Mellin amplitudes at the corresponding factorization poles, and we use the conformal Casimir to show that these amplitudes obey algebraic finite difference equations. By analyzing the recursive structure of our factorization formula we obtain simple diagrammatic rules for the construction of Mellin amplitudes corresponding to tree-level Witten diagrams in any bulk scalar theory. We prove the diagrammatic rules using our finite difference equations. Finally, we show that our factorization formula and our diagrammatic rules morph into the flat space S-Matrix of the bulk theory, reproducing the usual Feynman rules, when we take the flat space limit of AdS/CFT. Throughout we emphasize a deep analogy with the properties of flat space scattering amplitudes in momentum space, which suggests that the Mellin amplitude may provide a holographic definition of the flat space S-Matrix.

  14. Commissioning and First Operation of the Antiproton Decelerator (AD)

    E-Print Network [OSTI]

    Belochitskii, P; Buttkus, J; Carli, Christian; Caspers, Friedhelm; Chohan, V; Cornuet, D; Eriksson, T; Findlay, A; Giovannozzi, Massimo; Holzer, B; MacCaferri, R; Madsen, N; Marchesotti, M; Maury, S; Möhl, D; Pasinelli, S; Pedersen, F; Søby, L; Tan, J; Tranquille, G

    2001-01-01T23:59:59.000Z

    The Antiproton Decelerator (AD) is a simplified source of antiprotons which provides low energy antiprotons for experiments, replacing four machines: AC (Antiproton Collector), AA (Antiproton Accumulator), PS and LEAR (Low Energy Antiproton Ring), shutdown in 1996. The former AC was modified to include deceleration and electron cooling. The AD started operation in July 2000 and has since delivered cooled beam at 100 MeV/c (kinetic energy of 5.3 MeV) to 3 experiments (ASACUSA, ATHENA and ATRAP) for 1500 h. The flux (up to 2.5´105pbars /s delivered in short pulses of 330 ns every 110 s) and the quality of the ejected beam are not far from the design specifications. A linear RF Quadrupole Decelerator (RFQD) was commissioned in November 2000 to post-decelerate the beam for ASACUSA from 5.3 MeV to about 15 keV. Problems encountered in converting the fixed energy AC into a decelerating machine will be outlined, and the present status of the AD, including the performance of the cooling systems and the special diagn...

  15. Solar activity around AD 775 from aurorae and radiocarbon

    E-Print Network [OSTI]

    Neuhaeuser, Ralph

    2015-01-01T23:59:59.000Z

    A large variation in 14 C around AD 775 has been considered to be caused by one or more solar super-flares within one year. We critically review all known aurora reports from Europe as well as the Near, Middle, and Far East from AD 731 to 825 and find 39 likely true aurorae plus four more potential aurorae and 24 other reports about halos, meteors, thunderstorms etc., which were previously misinterpreted as aurorae or misdated; we assign probabilities for all events according to five aurora criteria. We find very likely true aurorae in AD 743, 745, 762, 765, 772, 773, 793, 796, 807, and 817. There were two aurorae in the early 770s observed near Amida (now Diyarbakir in Turkey near the Turkish-Syrian border), which were not only red, but also green-yellow - being at a relatively low geo-magnetic latidude, they indicate a relatively strong solar storm. However, it cannot be argued that those aurorae (geo-magnetical latitude 43 to 50 deg, considering five different reconstructions of the geo-magnetic pole) coul...

  16. On the Central Charge of Spacetime Current Algebras and Correlators in String Theory on AdS3

    E-Print Network [OSTI]

    Porrati, Massimo

    2015-01-01T23:59:59.000Z

    Spacetime Virasoro and affine Lie algebras for strings propagating in AdS3 are known to all orders in $\\alpha'$. The central extension of such algebras is a string vertex, whose expectation value can depend on the number of long strings present in the background but should be otherwise state-independent. In hep-th/0106004, on the other hand, a state-dependent expectation value was found. Another puzzling feature of the theory is lack of cluster decomposition property in certain connected correlators. This note shows that both problems can be removed by defining the free energy of the spacetime boundary conformal field theory as the Legendre transform of the formula proposed in the literature. This corresponds to pass from a canonical ensemble, where the number of fundamental strings that create the background can fluctuate, to a microcanonical one, where it is fixed.

  17. Non-perturbative Effects in AdS5 * S5 String Theory and d=4 SUSY Yang-Mills

    E-Print Network [OSTI]

    Tom Banks; Michael B. Green

    1998-06-10T23:59:59.000Z

    We show that five-dimensional anti de-Sitter space remains a solution to low-energy type IIB supergravity when the leading higher-derivative corrections to the classical supergravity (which are non-perturbative in the string coupling) are included. Furthermore, at this order in the low energy expansion of the IIB theory the graviton two-point and three-point functions in $AdS_5 \\times S^5$ are shown not to be renormalized and a precise expression is obtained for the four-graviton and related S-matrix elements. By invoking Maldacena's conjectured connection between IIB superstring theory and supersymmetric Yang-Mills theory corresponding statements are obtained concerning correlation functions of the energy-momentum tensor and related operators in the large-N Yang-Mills theory. This leads to interesting non-perturbative statements and insights into the r\\^ole of instantons in the gauge theory.

  18. Bound States, Yangian Symmetry and Classical r-matrix for the AdS5 x S5 Superstring

    E-Print Network [OSTI]

    M de Leeuw

    2009-10-06T23:59:59.000Z

    We show that the recently found S-matrices describing the scattering of two-particle bound states of the light-cone string sigma model on AdS5 x S5 are compatible with Yangian symmetry. In case the invariance with respect to the centrally extended su(2|2) algebra is not sufficient to fully specify the scattering matrix, the requirement of Yangian symmetry provides an alternative to the Yang-Baxter equation and leads to a complete, up to an overall phase, determination of the S-matrix. We then compare the semi-classical limit of the bound state S-matrices with the universal classical r-matrix by Beisert and Spill evaluated in the corresponding bound state representations and find perfect agreement.

  19. Ehrenfest Scheme of Higher Dimensional Topological AdS Black Holes in The Third Order Lovelock-Born-Infeld Gravity

    E-Print Network [OSTI]

    A. Belhaj; M. Chabab; H. EL Moumni; K. Masmar; M. B. Sedra

    2015-07-01T23:59:59.000Z

    Interpreting the cosmological constant as a thermodynamic pressure and its conjugate quantity as a thermodynamic volume, we reconsider the investigation of P-V critical behaviors of (1+n)-dimensional topological AdS black holes in Lovelock-Born-Infeld gravity. In particular, we give an explicit expression of the universal number \\chi=\\frac{P_c v_c}{T_c} in terms of the space dimension $n$. Then, we examine the phase transitions at the critical points of such topological black holes for 6 \\leq n \\leq 11 as required by the physical condition of the thermodynamical quantities. More precisely, the Ehrenfest equations have been checked revealing that the black hole system undergoes a second phase transition at the critical points.

  20. Nucleon structure functions at small $x$ via the Pomeron exchange in AdS space with a soft infrared wall

    E-Print Network [OSTI]

    Akira Watanabe; Katsuhiko Suzuki

    2014-06-09T23:59:59.000Z

    We present analyses on nucleon structure functions at the small Bjorken-$x$ in the framework of holographic QCD. In this study, we improve the description of the target nucleon in the current setup of the holographic model by introducing a soft-wall AdS/QCD model, in which the AdS geometry is smoothly cut off at IR. Combining the improved Pomeron-nucleon coupling and the wave function of the 5D U(1) vector field with the BPST Pomeron exchange kernel, then we obtain the structure functions. Here we focus on the nonperturbative kinematical region, where $10^{-6} \\leq x \\leq 10^{-2}$ and $0.1 \\leq Q^2 \\leq 10$ [GeV$^2$], and show that our calculations for $F_2^p$ and $F_L^p$ are consistent with experimental data of the deep inelastic scattering at HERA. Furthermore, we find that the resulting longitudinal-to-transverse ratio of the structure functions, $F_L^p/F_T^p$, depends on both of $x$ and $Q^2$.

  1. Periodontal Disease and Heart Health

    E-Print Network [OSTI]

    Goldman, Steven A.

    Periodontal Disease and Heart Health Deaf HealthTalks Presenter: Christopher Lehfeldt, DDS Elmwood #12;X-ray showing bone loss rickwilsondmd.typepad.com Thursday, March 15, 12 #12;5. What is heart disease? · The medical name for heart disease is cardiovascular disease (CVD) · An American dies from CVD

  2. Therapeutic versus neuroinflammatory effects of passive immunization is dependent on Abeta/amyloid burden in a transgenic mouse model of Alzheimer's disease

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    correlation of Ab with TGFb and SDF-1. Immunized males showlevels of MCP-1, IL-10, SDF-1, and RANTES in PBS-treatedT, Gawaz M: Decreased CXCL12 (SDF-1) plasma levels in early

  3. Inhibition of Amyloid-? (A?) Peptide-Binding Alcohol Dehydrogenase-A? Interaction Reduces A? Accumulation and Improves Mitochondrial Function in a Mouse Model of Alzheimer's Disease

    E-Print Network [OSTI]

    Yao, Jun; Du, Heng; Yan, Shiqiang; Fang, Fang; Wang, Chaodong; Lue, Lih-Fen; Guo, Lan; Chen, Doris; Stern, David M.; Moore, Frank J. Gunn; Chen, John Xi; Arancio, Ottavio; Yan, Shirley ShiDu

    2011-02-09T23:59:59.000Z

    that inhibition of the ABAD-A? interaction, using a decoy peptide (DP) in vitro and in vivo, protects against aberrant mitochondrial and neuronal function and improves spatial learning/memory. Intraperitoneal administration of ABAD-DP [fused to the transduction...

  4. Pooling/bootstrap-based GWAS (pbGWAS) identifies new loci modifying the age of onset in PSEN1 p.Glu280Ala Alzheimer's disease

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    University, Canberra, ACT, Australia. Correspondence: Dr M131 Garran Road, Canberra, ACT 0200, Australia. E-mail:

  5. Pooling/bootstrap-based GWAS (pbGWAS) identifies new loci modifying the age of onset in PSEN1 p.Glu280Ala Alzheimer's disease

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    46: 561--584. 7 Efron B. Bootstrap methods: another look atof the number of bootstrap samples. J Stat Plann Inferencemp ORIGINAL ARTICLE Pooling/bootstrap-based GWAS (pbGWAS)

  6. Mapping Ventricular Expansion and its Clinical Correlates in Alzheimer's Disease and Mild Cognitive Impairment using Multi-Atlas Fluid Image Alignment

    E-Print Network [OSTI]

    Thompson, Paul

    Impairment using Multi-Atlas Fluid Image Alignment Yi-Yu Chou1 , Natasha Leporé1 , Christina Avedissian1 , Sarah K. Madsen1 , Xue Hua1 , Clifford R. Jack, Jr. 2 , Michael W. Weiner3 , Arthur W. Toga1 , Paul M

  7. Adding Insulation to an Existing Home | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPower 2010 1A Potential PathAdding Insulation to an

  8. AD Hydro Power Ltd ADHPL | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki Home Jweers's APTAPFinal ReportAD Hydro Power

  9. Ads-tec GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE Jump to:Ohio:Ads-tec GmbH Jump to: navigation, search

  10. AD&D insurance offers three coverage options

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8Li (59AJ76) (See the EnergyTAMANG, APIL. A Multilevel224thAD&D

  11. Transportation Plan Ad Hoc Working Group | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2Uranium Transferon theTed DonatEnergyDepartment of EnergyPlan Ad Hoc

  12. Adding Insulation to an Existing Home | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISO 50001 Energy26.1U.S.-Brazil WindDepartment ofAdding

  13. Ad Lucem Workshop: Modeling Breakout Session | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1 AAccelerated aging of1.1Energy DPF forWorkshop Welcome Ad

  14. Spatial Interference Mitigation for Multiple Input Multiple Output Ad Hoc Networks: MISO Gains

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Spatial Interference Mitigation for Multiple Input Multiple Output Ad Hoc Networks: MISO Gains beamforming for a multiple input single output (MISO) ad hoc network to increase the density of successful

  15. Digital ad morphing : using behavioral analysis to increase response rates to online advertisements

    E-Print Network [OSTI]

    Link, Cordelia S

    2011-01-01T23:59:59.000Z

    This paper details the implementation and testing of a digital ad morphing system, a system which determines user cognitive style based on interaction with a website and serves ads designed to complement that cognitive ...

  16. E-Print Network 3.0 - ad hoc cloud Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    any ad hoc combination of physical processes... . 21. Adding 10% in mass of 10 y m water ice particles to the cloud of Fig 2 ( Y y m, ) reduces... Warming Early Mars with...

  17. A systems approach to identifying aircraft equipage requirements, benefits, and risks of ADS-B applications

    E-Print Network [OSTI]

    Jenkins, Marisa Rachael

    2009-01-01T23:59:59.000Z

    Automatic Dependent Surveillance-Broadcast (ADS-B) is considered to be a crucial part of the next generation of air transportation systems worldwide. Developing mature ADS-B applications which provide stakeholders with ...

  18. TDROP: A routing protocol for physically hierarchical ad hoc mobile networks

    E-Print Network [OSTI]

    Ahmed, Zaheer

    2000-01-01T23:59:59.000Z

    Many protocols for routing in mobile ad hoc networks have been proposed. None of these protocols differentiates mobile nodes based on their physical characteristics and also there is only one proposal for connecting ad hoc networks together to form...

  19. Comparison of value-added models for school ranking and classification: a Monte Carlo study

    E-Print Network [OSTI]

    Wang, Zhongmiao

    2009-05-15T23:59:59.000Z

    A “Value-Added” definition of school effectiveness calls for the evaluation of schools based on the unique contribution of schools to individual student academic growth. The estimates of value-added school effectiveness are usually used for ranking...

  20. Node Localisation in Wireless Ad Hoc Networks Jon Arnold, Nigel Bean, Miro Kraetzl, Matthew Roughan

    E-Print Network [OSTI]

    Roughan, Matthew

    Node Localisation in Wireless Ad Hoc Networks Jon Arnold, Nigel Bean, Miro Kraetzl, Matthew Roughan, Australia Email:{nigel.bean,matthew.roughan}@adelaide.edu.au Abstract-- Wireless ad hoc networks often

  1. Matching the Hagedorn temperature in AdS/CFT correspondence

    SciTech Connect (OSTI)

    Harmark, Troels; Orselli, Marta [Niels Bohr Institute and Nordita Blegdamsvej 17, 2100 Copenhagen O (Denmark)

    2006-12-15T23:59:59.000Z

    We match the Hagedorn/deconfinement temperature of planar N=4 super Yang-Mills (SYM) on RxS{sup 3} to the Hagedorn temperature of string theory on AdS{sub 5}xS{sup 5}. The match is done in a near-critical region where both gauge theory and string theory are weakly coupled. The near-critical region is near a point with zero temperature and critical chemical potential. On the gauge-theory side we are taking a decoupling limit found in Ref. 7 in which the physics of planar N=4 SYM is given exactly by the ferromagnetic XXX{sub 1/2} Heisenberg spin chain. We find moreover a general relation between the Hagedorn/deconfinement temperature and the thermodynamics of the Heisenberg spin chain and we use this to compute it in two distinct regimes. On the string-theory side, we identify the dual limit for which the string tension and string coupling go to zero. This limit is taken of string theory on a maximally supersymmetric pp-wave background with a flat direction, obtained from a Penrose limit of AdS{sub 5}xS{sup 5}. We compute the Hagedorn temperature of the string theory and find agreement with the Hagedorn/deconfinement temperature computed on the gauge-theory side.

  2. Two years of AD operation Experience and progress

    E-Print Network [OSTI]

    Belochitskii, P; Findlay, A; Holzer, E B; MacCaferri, R; Maury, S; Pasinelli, S; Pedersen, F; Tranquille, G

    2002-01-01T23:59:59.000Z

    The antiproton decelerator (AD) has been running successfully for physics for the past two years. After the end of the commissioning period [1] that finished in 2000, the machine has gradually been improved. The main efforts were concentrated on increasing the beam intensity, reducing the cycle length and improving the machine stability. The intensity of the injected beam has been significantly increased due to a higher beam intensity from the PS complex and also due to increased transverse acceptances in the AD machine. The beam losses during deceleration were reduced from 30-40 % down to a few percent, mainly due to improvements of the operation of the deceleration RF cavity. Altogether these improvements increased the intensity of the ejected beam by a factor of two. Improvements of the electron cooling were followed by a reduction of emittances and cycle duration (about 15%). Progress in beam diagnostics now allows the monitoring of the machine performance during the whole cycle. The stability of the mach...

  3. Generalized massive gravity in AdS{sub 3} spacetime

    SciTech Connect (OSTI)

    Liu Yan; Sun Yawen [Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, P. O. Box 2735, Beijing 100190 (China)

    2009-06-15T23:59:59.000Z

    In this note we investigate the generalized massive gravity in asymptotically AdS{sub 3} spacetime by combining the two mass terms of topological massive gravity and new massive gravity theory. We study the linearized excitations around the AdS{sub 3} background and find that at a specific value of a certain combination of the two mass parameters (chiral line), one of the massive graviton solutions becomes the left-moving massless mode. It is shown that the theory is chiral at this line under Brown-Henneaux boundary condition. Because of this degeneration of the gravitons the new log solution which has a logarithmic asymptotic behavior is also a solution to this gravity theory at the chiral line. The log boundary condition which was proposed to accommodate this log solution is proved to be consistent at this chiral line. The resulting theory is no longer chiral except at a special point on the chiral line, where another new solution with log-square asymptotic behavior exists. At this special point, we prove that a new kind of boundary condition called log-square boundary condition, which accommodates this new solution, can be consistent.

  4. Influences of Government Interventions on Increasing Value-Added Wood Product Exports from Ghana

    E-Print Network [OSTI]

    Influences of Government Interventions on Increasing Value-Added Wood Product Exports from Ghana exporting raw materials such lumber to exporting processed or value-added wood products. In the mid-1990s on increasing value-added exports. These actions are: 1) the imposition of a levy on air-dried lumber exports, 2

  5. Wireless ad hoc networks Acknowledgement: Slides borrowed from Richard Y. Yang @ Yale

    E-Print Network [OSTI]

    Gao, Jie

    are not flexible. ­ Vulnerable to attacks. · Ad hoc networks· Ad hoc networks ­ Flexible, easy to deploy, cheaper · Optimal power assignment /transmission range · Optimal scheduling & multi-hop routing · Node are staticWireless ad hoc networks Acknowledgement: Slides borrowed from Richard Y. Yang @ Yale #12

  6. FaultTolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks

    E-Print Network [OSTI]

    Fault­Tolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks (SPAWN) BETTINA WEISS communication technologies, wireless ad hoc networks are increasingly commonplace nowadays. Spontaneous (``ad wireless sensor networks and disaster area communication systems. It is also a major enabling technology

  7. A Multiobjective Performance Evaluation Framework for Routing in Wireless Ad Hoc

    E-Print Network [OSTI]

    Jaffrès-Runser, Katia

    network when delay, robustness and energy are considered. I. INTRODUCTION Wireless ad hoc and sensor to transmission delay [8], energy consumption [9] or fairness [10] are added on top of its main design goalA Multiobjective Performance Evaluation Framework for Routing in Wireless Ad Hoc Networks Katia

  8. Mapping of Subtasks with Multiple Versions in a Heterogeneous Ad Hoc Grid Environment

    E-Print Network [OSTI]

    Maciejewski, Anthony A.

    Mapping of Subtasks with Multiple Versions in a Heterogeneous Ad Hoc Grid Environment Sameer Shivle. Index Terms-- ad hoc grid, communication scheduling, mapping, resource allocation, task scheduling. 1 in the ad hoc grid. It is also assumed that a static mapping that maps the subtasks to these M machines

  9. Static Mapping of Subtasks in a Heterogeneous Ad Hoc Grid Environment

    E-Print Network [OSTI]

    Maciejewski, Anthony A.

    Static Mapping of Subtasks in a Heterogeneous Ad Hoc Grid Environment Sameer Shivle1 , Ralph to efficiently map tasks to machines in an ad hoc grid so as to minimize the energy consumed due to communication University George T. Abell Endowment. Abstract An ad hoc grid is a heterogeneous computing and communication

  10. Enhancing the Security of On-demand Routing in Ad Hoc Networks

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Enhancing the Security of On-demand Routing in Ad Hoc Networks Zhenjiang Li1 and J.J. Garcia, to be truly effective, communication over such networks should be secure. The attacks to an ad hoc network can Springer-Verlag Berlin Heidelberg 2005 #12;Enhancing the Security of On-demand Routing in Ad Hoc Networks

  11. Chemistry and Physics of Lipids 158 (2009) 5460 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Williamson, Mike P.

    2009-01-01T23:59:59.000Z

    , Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei, Tokyo, 184-8588 Japan b Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei, dimyristoylphosphatidylcholine; A , amyloid -peptide; AD, Alzheimer's disease; NMR, nuclear magnetic resonance. Corresponding

  12. 1674 DOI: 10.1002/cmdc.200700140 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim ChemMedChem 2007, 2, 1674 1692 DOI: 10.1002/cmdc.200700140

    E-Print Network [OSTI]

    Ghosh, Indraneel

    , 2, 1674 ­ 1692 MED #12;DOI: 10.1002/cmdc.200700140 Molecules that Target beta-Amyloid Cliff I-synuclein), and dialysis related amyloido- sis (b2-microglobulin).[1­4] Alzheimer's disease (AD) is perhaps best of the molecular approaches towards targeting oligomers and fibrils. The presence of amyloid plaque

  13. q-Deformation of the AdS5 x S5 Superstring S-matrix and its Relativistic Limit

    E-Print Network [OSTI]

    Hoare, Ben; Miramontes, J Luis

    2011-01-01T23:59:59.000Z

    A set of four factorizable non-relativistic S-matrices for a multiplet of fundamental particles are defined based on the R-matrix of the quantum group deformation of the centrally extended superalgebra su(2|2). The S-matrices are a function of two independent couplings g and q=exp(i\\pi/k). The main result is to find the scalar factor, or dressing phase, which ensures that the unitarity and crossing equations are satisfied. For generic (g,k), the S-matrices are branched functions on a product of rapidity tori. In the limit k->infinity, one of them is identified with the S-matrix describing the magnon excitations on the string world sheet in AdS5 x S5, while another is the mirror S-matrix that is needed for the TBA. In the g->infinity limit, the rapidity torus degenerates, the branch points disappear and the S-matrices become meromorphic functions, as required by relativistic S-matrix theory. However, it is only the mirror S-matrix which satisfies the correct relativistic crossing equation. The mirror S-matrix ...

  14. Conserved charges for black holes in Einstein-Gauss-Bonnet gravity coupled to nonlinear electrodynamics in AdS space

    SciTech Connect (OSTI)

    Miskovic, Olivera; Olea, Rodrigo [Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Casilla 4059, Valparaiso (Chile) and Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, Am Muehlenberg 1, 14476 Golm (Germany); Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Casilla 4059, Valparaiso (Chile)

    2011-01-15T23:59:59.000Z

    Motivated by possible applications within the framework of anti-de Sitter gravity/conformal field theory correspondence, charged black holes with AdS asymptotics, which are solutions to Einstein-Gauss-Bonnet gravity in D dimensions, and whose electric field is described by nonlinear electrodynamics are studied. For a topological static black hole ansatz, the field equations are exactly solved in terms of the electromagnetic stress tensor for an arbitrary nonlinear electrodynamic Lagrangian in any dimension D and for arbitrary positive values of Gauss-Bonnet coupling. In particular, this procedure reproduces the black hole metric in Born-Infeld and conformally invariant electrodynamics previously found in the literature. Altogether, it extends to D>4 the four-dimensional solution obtained by Soleng in logarithmic electrodynamics, which comes from vacuum polarization effects. Falloff conditions for the electromagnetic field that ensure the finiteness of the electric charge are also discussed. The black hole mass and vacuum energy as conserved quantities associated to an asymptotic timelike Killing vector are computed using a background-independent regularization of the gravitational action based on the addition of counterterms which are a given polynomial in the intrinsic and extrinsic curvatures.

  15. Reproductive Diseases in Cattle

    E-Print Network [OSTI]

    Sprott, L. R.; Field, Bob

    1998-12-03T23:59:59.000Z

    susceptible. Droplets of urine from infected cows can infect normal cows after contact with the eye or mucous membranes of the nose or mouth. The disease infects more cattle each day, preventing cows from settling and lengthening their calving intervals... abortus) fetal membranes from aborting heifers at 4-12 not vaccinate bulls. cow; fetus; months. placenta Leptospirosis Bacterial (At least Urine of infected Any stage, Sample 10 Every 6 months Laboratory should deter- 5 serotypes) animals...

  16. The holy light: a study of natural light in Hindu temples in the southern region of Tamilnadu, India (7th century AD to 17th century AD)

    E-Print Network [OSTI]

    Mukherji, Anuradha

    2001-01-01T23:59:59.000Z

    in three Hindu temples built in the southern state of Tamilnadu in India. These three temple are the Shore temple built at Mahabalipuram by the Pallava dynasty (700 AD); the Brihadeshvara temple built at Tanjore by the Chola dynasty (1010 AD...

  17. The Hawking temperature in the context of dark energy for four-dimensional asymptotically AdS black holes with scalar hair

    E-Print Network [OSTI]

    J. Naji

    2014-04-18T23:59:59.000Z

    In this paper, we considered new solutions for four-dimensional asymptotically AdS black holes with scalar hair and discuss about Hawking temperature in the context of dark energy by using the tunneling method. We obtain modification of the Hawking temperature due to presence of the dark energy.

  18. AdS/Ricci-flat correspondence and the Gregory-Laflamme instability

    E-Print Network [OSTI]

    Marco M. Caldarelli; Joan Camps; Blaise Goutéraux; Kostas Skenderis

    2013-03-20T23:59:59.000Z

    We show that for every asymptotically AdS solution compactified on a torus there is a corresponding Ricci-flat solution obtained by replacing the torus by a sphere, performing a Weyl rescaling of the metric and appropriately analytically continuing the dimension of the torus/sphere (as in generalized dimensional reduction). In particular, it maps Minkowski spacetime to AdS on a torus, the holographic stress energy tensor of AdS to the stress energy tensor due to a brane localized in the interior of spacetime and AdS black branes to (asymptotically flat) Schwarzschild black branes. Applying it to the known solutions describing the hydrodynamic regime in AdS/CFT, we derive the hydrodynamic stress-tensor of asymptotically flat black branes to second order, which is constrained by the parent conformal symmetry. We compute the dispersion relation of the Gregory-Laflamme unstable modes through cubic order in the wavenumber, finding remarkable agreement with numerical data. In the case of no transverse sphere, AdS black branes are mapped to Rindler spacetime and the second-order transport coefficients of the fluid dual to Rindler spacetime are recovered.

  19. Inherited risk for common disease

    E-Print Network [OSTI]

    Banava, Helen

    2007-01-01T23:59:59.000Z

    Linkage disequilibrium studies have discovered few gene-disease associations for common diseases. The explanation has been offered that complex modes of inheritance govern risk for cancers, cardiovascular and cerebrovascular ...

  20. No-carrier-added (/sup 18/F)-N-methylspiroperidol

    DOE Patents [OSTI]

    Shiue, C.Y.; Fowler, J.S.; Wolf, A.P.

    1985-10-04T23:59:59.000Z

    The present invention is directed to the synthesis of a radioligand, labeled with a positron emitting radionuclide which is suitable for dynamic studies in humans using positron emission transaxial tomography. No-carrier-added (NCA) (/sup 18/F)-N-methylspiroperiodl is prepared from four different sustrates: p-nitrobenzonitrile, cyclopropyl p-nitrophenyl ketone, p-cyclopropanoyl-N,N,N-trimethylanilinium iodide and p-cyclopropanoyl-N,N,N-trimethylanilinium perchlorate. The process for the production of NCA (/sup 18/F)-N-methylspiroperidol is a nucleophilic aromatic substitution reaction. Furthermore, the compound of this invention is shown to be effective as a new drug of choice for in vivo examination of dopamine binding sites in a human brain. In particular, this drug is primarily useful in the noninvasive technique of positron emission transaxial tomography (PETT).

  1. Nonforward Compton scattering in AdS/CFT correspondence

    E-Print Network [OSTI]

    Jian-Hua Gao; Bo-Wen Xiao

    2010-05-20T23:59:59.000Z

    We study the nonforward Compton scattering in particular the deeply virtual Compton scattering from AdS/CFT. We first calculate the contributions from the s-channel and u-channel supergravity diagrams as well as the four point interaction diagram which correspond to the Compton scatterings on a dilaton target in CFT. Furthermore, we study the Compton scattering on a dilatino target. Assuming that protons can be identified as supergravity modes of dilatino, we compare the calculated DVCS cross section to the low-energy experimental data from the H1 and ZEUS collaborations and find good agreement. We also discuss the t-channel graviton exchange contribution and show that it should be dominant in the high-energy limit.

  2. ANTIHYDROGEN PRODUCTION AND PRECISION SPECTROSCOPY WITH ATHENA/AD-1

    SciTech Connect (OSTI)

    M. HOLZSCHEITER; C. AMSLER; ET AL

    2000-11-01T23:59:59.000Z

    CPT invariance is a fundamental property of quantum field theories in flat space-time. Principal consequences include the predictions that particles and their antiparticles have equal masses and lifetimes, and equal and opposite electric charges and magnetic moments. It also follows that the fine structure, hyperfine structure, and Lamb shifts of matter and antimatter bound systems should be identical. It is proposed to generate new stringent tests of CPT using precision spectroscopy on antihydrogen atoms. An experiment to produce antihydrogen at rest has been approved for running at the Antiproton Decelerator (AD) at CERN. We describe the fundamental features of this experiment and the experimental approach to the first phase of the program, the formation and identification of low energy antihydrogen.

  3. Sonde Adjust Value-Added Product Technical Report

    SciTech Connect (OSTI)

    Troyan, D

    2012-01-09T23:59:59.000Z

    The Sonde Adjust (SONDEADJUST) value-added product (VAP) creates a file that includes all fields from original Atmospheric Radiation Measurement Climate Research Facility (ARM Facility) radiosonde files and contains several value-added fields that provide adjustments related to well-known humidity issues. SONDEADJUST produces data that correct documented biases in radiosonde humidity measurements. Previous efforts towards applying some of these corrections are available via the discontinued PI product sgpsondecorr1miloC1. Unique fields contained within this datastream include smoothed original relative humidity, dry bias corrected relative humidity, and final corrected relative humidity. The smoothed RH field refines the relative humidity from integers-the resolution of the instrument-to fractions of a percent. This profile is then used to calculate the dry bias corrected field. The final correction fixes the time-lag problem and uses the dry-bias field as input into the algorithm. In addition to dry bias, solar heating is another correction that is encompassed in the final corrected RH field. Output from SONDEADJUST differs from the previous RH-corrected datastreams in important ways. First, all three types of ARM radiosondes-Vaisala RS-80, RS-90, and RS-92-are corrected using dedicated procedures and/or parameters. Second, the output variables include all of those found in the original radiosonde file: dry bulb temperature, dewpoint temperature, wind speed, wind direction, eastward wind component, northward wind component, wind status (a Vaisala-produced field used in conjunction with the Loran system), ascent rate, and original relative humidity. Additional humidity fields are smoothed relative humidity, dry biased corrected relative humidity, final ambient relative humidity, and scaled adjusted relative humidity. Third, quality control (QC) flags of the fields from the original radiosonde datastream are brought into the SONDEADJUST output file. Additional QC variables are created for the new fields.

  4. Methods for chemical recovery of non-carrier-added radioactive tin from irradiated intermetallic Ti-Sb targets

    DOE Patents [OSTI]

    Lapshina, Elena V. (Troitsk, RU); Zhuikov, Boris L. (Troitsk, RU); Srivastava, Suresh C. (Setauket, NY); Ermolaev, Stanislav V. (Obninsk, RU); Togaeva, Natalia R. (Obninsk, RU)

    2012-01-17T23:59:59.000Z

    The invention provides a method of chemical recovery of no-carrier-added radioactive tin (NCA radiotin) from intermetallide TiSb irradiated with accelerated charged particles. An irradiated sample of TiSb can be dissolved in acidic solutions. Antimony can be removed from the solution by extraction with dibutyl ether. Titanium in the form of peroxide can be separated from tin using chromatography on strong anion-exchange resin. In another embodiment NCA radiotin can be separated from iodide solution containing titanium by extraction with benzene, toluene or chloroform. NCA radiotin can be finally purified from the remaining antimony and other impurities using chromatography on silica gel. NCA tin-117m can be obtained from this process. NCA tin-117m can be used for labeling organic compounds and biological objects to be applied in medicine for imaging and therapy of various diseases.

  5. EA-0896: Final Environmental Assessment

    Broader source: Energy.gov [DOE]

    Center for Nuclear Medicine Research in Alzheimer's Disease Health Sciences Center- West Virginia University

  6. EA-0896: Finding of No Significant Impact

    Broader source: Energy.gov [DOE]

    Center for Nuclear Medicine Research in Alzheimer's Disease Health Sciences Center- West Virginia University

  7. q-Deformation of the AdS5 x S5 Superstring S-matrix and its Relativistic Limit

    E-Print Network [OSTI]

    Ben Hoare; Timothy J. Hollowood; J. Luis Miramontes

    2011-12-19T23:59:59.000Z

    A set of four factorizable non-relativistic S-matrices for a multiplet of fundamental particles are defined based on the R-matrix of the quantum group deformation of the centrally extended superalgebra su(2|2). The S-matrices are a function of two independent couplings g and q=exp(i\\pi/k). The main result is to find the scalar factor, or dressing phase, which ensures that the unitarity and crossing equations are satisfied. For generic (g,k), the S-matrices are branched functions on a product of rapidity tori. In the limit k->infinity, one of them is identified with the S-matrix describing the magnon excitations on the string world sheet in AdS5 x S5, while another is the mirror S-matrix that is needed for the TBA. In the g->infinity limit, the rapidity torus degenerates, the branch points disappear and the S-matrices become meromorphic functions, as required by relativistic S-matrix theory. However, it is only the mirror S-matrix which satisfies the correct relativistic crossing equation. The mirror S-matrix in the relativistic limit is then closely related to that of the semi-symmetric space sine-Gordon theory obtained from the string theory by the Pohlmeyer reduction, but has anti-symmetric rather than symmetric bound states. The interpolating S-matrix realizes at the quantum level the fact that at the classical level the two theories correspond to different limits of a one-parameter family of symplectic structures of the same integrable system.

  8. Scanning Tunneling Macroscopy, Black Holes, and AdS/CFT Bulk Locality

    E-Print Network [OSTI]

    Soo-Jong Rey; Vladimir Rosenhaus

    2014-06-02T23:59:59.000Z

    We establish resolution bounds on reconstructing a bulk field from boundary data on a timelike hypersurface. If the bulk only supports propagating modes, reconstruction is complete. If the bulk also supports evanescent modes, local reconstruction is not achievable unless one has exponential precision in knowledge of the boundary data. Without exponential precision, for a Minkowski bulk, one can reconstruct a spatially coarse-grained bulk field, but only out to a depth set by the coarse-graining scale. For an asymptotically AdS bulk, reconstruction is limited to a spatial coarse-graining proper distance set by the AdS scale. AdS black holes admit evanescent modes. We study the resolution bound in the large AdS black hole background and provide a dual CFT interpretation. Our results demonstrate that, if there is a black hole of any size in the bulk, then sub-AdS bulk locality is no longer well-encoded in boundary data in terms of local CFT operators. Specifically, in order to probe the bulk on sub-AdS scales using only boundary data in terms of local operators, one must either have such data to exponential precision or make further assumptions about the bulk state.

  9. No-carrier-added (18F)-N-methylspiroperidol

    DOE Patents [OSTI]

    Shiue, Chyng-Yann; Fowler, Joanna S.; Wolf, Alfred P.

    1993-07-06T23:59:59.000Z

    There is disclosed a radioligand labeled with a positron emitting radionuclide suitable for dynamic study in living humans with positron emission transaxial tomography. [.sup.18 F]-N-methylspiroperidol, exhibiting extremely high affinity for the dopamine receptors, provides enhanced uptake and retention in the brain concomitant with reduced radiation burden. These characteristics all combine to provide [.sup.18 F]-N-methylspiroperidol as a radioligand superior to known radioligands for mapping dopamine receptors in normal and disease states in the living brain. Additionally, a new synthetic procedure for this material is disclosed.

  10. No-carrier-added (18F)-N-methylspiroperidol

    DOE Patents [OSTI]

    Shiue, Chyng-Yann (East Setauket, NY); Fowler, Joanna S. (Bellport, NY); Wolf, Alfred P. (Setauket, NY)

    1993-01-01T23:59:59.000Z

    There is disclosed a radioligand labeled with a positron emitting radionuclide suitable for dynamic study in living humans with positron emission transaxial tomography. [.sup.18 F]-N-methylspiroperidol, exhibiting extremely high affinity for the dopamine receptors, provides enhanced uptake and retention in the brain concomitant with reduced radiation burden. These characteristics all combine to provide [.sup.18 F]-N-methylspiroperidol as a radioligand superior to known radioligands for mapping dopamine receptors in normal and disease states in the living brain. Additionally, a new synthetic procedure for this material is disclosed.

  11. Development of Graves' disease following radiation therapy in Hodgkin's disease

    SciTech Connect (OSTI)

    Loeffler, J.S.; Tarbell, N.J.; Garber, J.R.; Mauch, P.

    1988-01-01T23:59:59.000Z

    Radiation-related thyroid dysfunction is a common occurrence in patients with Hodgkin's disease treated with mantle field radiation. Although chemical and clinical hypothyroidism are most commonly seen, Graves' disease has also been described. We have examined the records of 437 surgically staged patients who received mantle field irradiation between April 1969 and December 1980 to ascertain the frequency of manifestations of Graves' disease. Within this group, seven patients developed hyperthyroidism accompanied by ophthalmic findings typical of those seen in Graves' disease. The actuarial risk of developing Graves' disease at 10 years following mantle irradiation for Hodgkin's disease was 3.3% in female patients and 1% in male patients in this study. The observed/expected ratios were 5.9 and 5.1 for female and male patients, respectively. This observed risk significantly exceeded that seen in the general population.

  12. Can adding oil control domain formation in binary amphiphile bilayers?

    E-Print Network [OSTI]

    M. J. Greenall; C. M. Marques

    2014-06-12T23:59:59.000Z

    Bilayers formed of two species of amphiphile of different chain lengths may segregate into thinner and thicker domains composed predominantly of the respective species. Using a coarse-grained mean-field model, we investigate how mixing oil with the amphiphiles affects the structure and thickness of the bilayer at and on either side of the boundary between two neighbouring domains. In particular, we find that oil molecules whose chain length is close to that of the shorter amphiphiles segregate to the thicker domain. This smooths the surface of the hydrophobic bilayer core on this side of the boundary, reducing its area and curvature and their associated free-energy penalties. The smoothing effect is weaker for oil molecules that are shorter or longer than this optimum value: short molecules spread evenly through the bilayer, while long molecules swell the thicker domain, increasing the surface area and curvature of the bilayer core in the interfacial region. Our results show that adding an appropriate oil could make the formation of domain boundaries more or less favourable, raising the possibility of controlling the domain size distribution.

  13. Cloud Condensation Nuclei Profile Value-Added Product

    SciTech Connect (OSTI)

    McFarlane, S; Sivaraman, C; Ghan, S

    2012-10-08T23:59:59.000Z

    The cloud condensation nuclei (CCN) concentration at cloud base is the most relevant measure of the aerosol that influences droplet formation in clouds. Since the CCN concentration depends on supersaturation, a more general measure of the CCN concentration is the CCN spectrum (values at multiple supersaturations). The CCN spectrum is now measured at the surface at several fixed ARM sites and by the ARM Mobile Facility (AMF), but is not measured at the cloud base. Rather than rely on expensive aircraft measurements for all studies of aerosol effects on clouds, a way to project CCN measurements at the surface to cloud base is needed. Remote sensing of aerosol extinction provides information about the vertical profile of the aerosol, but cannot be directly related to the CCN concentration because the aerosol extinction is strongly influenced by humidification, particularly near cloud base. Ghan and Collins (2004) and Ghan et al. (2006) propose a method to remove the influence of humidification from the extinction profiles and tie the “dry extinction” retrieval to the surface CCN concentration, thus estimating the CCN profile. This methodology has been implemented as the CCN Profile (CCNPROF) value-added product (VAP).

  14. FRW Solutions and Holography from Uplifted AdS/CFT

    SciTech Connect (OSTI)

    Dong, Xi; Horn, Bart; /Stanford U., ITP /Stanford U., Phys. Dept. /SLAC; Matsuura, Shunji; /Santa Barbara, KITP /Stanford U., ITP /Stanford U., Phys. Dept. /SLAC; Silverstein, Eva; Torroba, Gonzalo; /Stanford U., ITP /Stanford U., Phys. Dept. /SLAC

    2012-02-15T23:59:59.000Z

    Starting from concrete AdS/CFT dual pairs, one can introduce ingredients which produce cosmological solutions, including metastable de Sitter and its decay to non-accelerating FRW. We present simple FRW solutions sourced by magnetic flavor branes and analyze correlation functions and particle and brane dynamics. To obtain a holographic description, we exhibit a time-dependent warped metric on the solution and interpret the resulting redshifted region as a Lorentzian low energy effective field theory in one fewer dimension. At finite times, this theory has a finite cutoff, a propagating lower dimensional graviton and a finite covariant entropy bound, but at late times the lower dimensional Planck mass and entropy go off to infinity in a way that is dominated by contributions from the low energy effective theory. This opens up the possibility of a precise dual at late times. We reproduce the time-dependent growth of the number of degrees of freedom in the system via a count of available microscopic states in the corresponding magnetic brane construction.

  15. Genomic mosaicism in the human brain

    E-Print Network [OSTI]

    Westra, Jurjen Willem

    2008-01-01T23:59:59.000Z

    Zlokovic BV (2008) The blood-brain barrier in health andmosaicism in the human brain ………………………………………. Chapter Threethe Alzheimer’s disease brain ………………………………. Chapter Five DNA

  16. Adding Priorities to Total Order Broadcast Protocols Emili Miedes, Francesc D. Mu~noz-Escoi

    E-Print Network [OSTI]

    Muñoz, Francesc

    Adding Priorities to Total Order Broadcast Protocols Emili Miedes, Francesc D. Mu~noz-Esco,fmunyoz}@iti.upv.es Technical Report TR-ITI-ITE-07/23 (supersedes TR-ITI-ITE-07/07) E.Miedes,F.D.Mu~noz-Esco´i:AddingPrioritiestoTotalOrderBroadcastProtocolsTR-ITI-ITE-07/23( #12;#12;Adding Priorities to Total Order Broadcast Protocols Emili Miedes, Francesc D. Mu~noz-Esco

  17. Light-Front Quantization and AdS/QCD: An Overview

    SciTech Connect (OSTI)

    de Teramond, Guy F.; /Costa Rica U.; Brodsky, Stanley J.; /SLAC /Stanford U., Phys. Dept.

    2011-08-19T23:59:59.000Z

    We give an overview of the light-front holographic approach to strongly coupled QCD, whereby a confining gauge theory, quantized on the light front, is mapped to a higher-dimensional anti de Sitter (AdS) space. The framework is guided by the AdS/CFT correspondence incorporating a gravitational background asymptotic to AdS space which encodes the salient properties of QCD, such as the ultraviolet conformal limit at the AdS boundary at z {yields} 0, as well as modifications of the geometry in the large z infrared region to describe confinement and linear Regge behavior. There are two equivalent procedures for deriving the AdS/QCD equations of motion: one can start from the Hamiltonian equation of motion in physical space time by studying the off-shell dynamics of the bound state wavefunctions as a function of the invariant mass of the constituents. To a first semiclassical approximation, where quantum loops and quark masses are not included, this leads to a light-front Hamiltonian equation which describes the bound state dynamics of light hadrons in terms of an invariant impact variable {zeta} which measures the separation of the partons within the hadron at equal light-front time. Alternatively, one can start from the gravity side by studying the propagation of hadronic modes in a fixed effective gravitational background. Both approaches are equivalent in the semiclassical approximation. This allows us to identify the holographic variable z in AdS space with the impact variable {zeta}. Light-front holography thus allows a precise mapping of transition amplitudes from AdS to physical space-time. The internal structure of hadrons is explicitly introduced and the angular momentum of the constituents plays a key role.

  18. Top Value Added Chemicals from Biomass: Volume I--Results of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Volume I--Results of Screening for Potential Candidates from Sugars and Synthesis Gas Top Value Added Chemicals from Biomass: Volume I--Results of Screening for Potential...

  19. IS THE SUPERNOVA OF A.D. 185 RECORDED IN ANCIENT ROMAN LITERATURE?

    E-Print Network [OSTI]

    Fridlind, Ann

    or a supernova, although Tycho Brahe, Pingre, and Lynn favored the planet Venus. The Chinese Chin shu (A.D. 635

  20. ad-hoc wireless environments: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the state-ofthe -art of the ad hoc networking technology in four areas: routing, medium access control, multicasting, and security. Where possible, comparison between the...

  1. Data:909cb0ad-9159-40ad-a117-2d7740c2d61e | Open Energy Information

    Open Energy Info (EERE)

    Energy Market Adjustment 0.003KWH (Added to All Above Energy Rates) Controlled Water Heater Credit .00736KWH Applies to the first 1,000 KWHs each month (October-March)...

  2. A Manual of Poultry Diseases.

    E-Print Network [OSTI]

    Bell, R. R.; Flowers, A. I.; Grumbles, L. C.; Meinecke, C. F.; Patterson, C. M.; Wormell, B. C.; Hall, C. F.

    1965-01-01T23:59:59.000Z

    " of ocular leucosis is specific. Hatchery and Breeder Flock Health Management Sanitation is a much used, but poorly defined word. The usual implication is that sanitation is a universally understood practice that may be applied to prevent all diseases... must be based on the nature of specific diseases. The ;kmbiguity surrounding the term "sanitation" can be avoided by using a term "management and sanitation for disease prevention." This phrase then would be defined as all practices, specific...

  3. Exact solutions with AdS asymptotics of Einstein and Einstein-Maxwell gravity minimally coupled to a scalar field

    SciTech Connect (OSTI)

    Cadoni, Mariano; Serra, Matteo; Mignemi, Salvatore [Dipartimento di Fisica, Universita di Cagliari and INFN, Sezione di Cagliari - Cittadella Universitaria, 09042 Monserrato (Italy); Dipartimento di Matematica, Universita di Cagliari and INFN, Sezione di Cagliari - viale Merello 92, 09123 Cagliari (Italy)

    2011-10-15T23:59:59.000Z

    We propose a general method for solving exactly the static field equations of Einstein and Einstein-Maxwell gravity minimally coupled to a scalar field. Our method starts from an ansatz for the scalar field profile, and determines, together with the metric functions, the corresponding form of the scalar self-interaction potential. Using this method we prove a new no-hair theorem about the existence of hairy black-hole and black-brane solutions and derive broad classes of static solutions with radial symmetry of the theory, which may play an important role in applications of the AdS/CFT correspondence to condensed matter and strongly coupled QFTs. These solutions include: (1) four- or generic (d+2)-dimensional solutions with planar, spherical or hyperbolic horizon topology; (2) solutions with anti-de Sitter, domain wall and Lifshitz asymptotics; (3) solutions interpolating between an anti-de Sitter spacetime in the asymptotic region and a domain wall or conformal Lifshitz spacetime in the near-horizon region.

  4. No-carrier-added [.sup.18 F]-N-fluoroalkylspiroperidols

    DOE Patents [OSTI]

    Shiue, Chyng-Yann (East Setauket, NY); Wolf, Alfred P. (Setauket, NY); Bai, Lan-Qin (Upton, NY); Teng, Ren-Tui (Upton, NY)

    1989-01-01T23:59:59.000Z

    There is disclosed radioligands labeled with the position emitting radionuclide [.sup.18 F] suitable for dynamic study in living humans with position emission transaxial tomography. These new [.sup.18 F]-N-fluoroalkylspiroperidols, wherein the alkyl group contains from 2-6 carbon atoms, exhibit extremely high affinity for the dopamine receptors and provide enhanced uptake and retention in the brain concomitant with reduced radiation burden. These characteristics all combine to make these new radioligands useful for mapping dopamine receptors in normal and disease states in the living brain. Additionally, a new synthetic procedure for these radioligands as well as a new procedure for preparing the radiolabeled alkyl halide alkylating reagents are also disclosed.

  5. Using Wikipedia to forecast diseases

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    said. "In the same way we check the weather each morning, individuals and public health officials can monitor disease incidence and plan for the future based on today's...

  6. Decline in mitochondrial bioenergetics and shift to ketogenic profile in brain during reproductive senescence

    E-Print Network [OSTI]

    Brinton, Roberta Diaz

    Decline in mitochondrial bioenergetics and shift to ketogenic profile in brain during reproductive Bioenergetics Reproductive senescence Alzheimer's disease Estrogen Background: We have previously demonstrated that mitochondrial bioenergetic deficits precede Alzheimer's pathology in the female triple transgenic Alzheimer's (3

  7. How Do Patents Shape Global Value Chains? International and Domestic Patenting and Value-Added Trade

    E-Print Network [OSTI]

    Sekhon, Jasjeet S.

    -Added Trade October 2014 Preliminary Draft ­ Please do not cite Nikolas J. Zolas, Center for Economic Studies that links patents to industry and trade classifications to characterize how patents affect the structure of value-added trade, we test how domestic and international (bilateral) patenting specifically related

  8. A Series of Tubes: Adding Interactivity to 3D Prints Using Internal Pipes

    E-Print Network [OSTI]

    Zakhor, Avideh

    A Series of Tubes: Adding Interactivity to 3D Prints Using Internal Pipes Valkyrie Savage valkyrie flexibility and potential. Author Keywords Fabrication; 3D Printing; Interactive Objects; Design Tools ACM. Recently, human-computer interaction researchers have be- gun to explore adding interaction to 3D printed

  9. Constructing Minimum-Energy Broadcast Trees In Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Liang, Weifa

    algorithm, power awareness, ad hoc networks, energy consumption optimization, broad- cast and multicastConstructing Minimum-Energy Broadcast Trees In Wireless Ad Hoc Networks Weifa Liang Department related to power consump- tion in this kind of network. One is the minimum-energy broadcast tree problem

  10. Reliable and Energy-Efficient Routing for Static Wireless Ad Hoc Networks with Unreliable Links

    E-Print Network [OSTI]

    Wang, Yu

    Reliable and Energy-Efficient Routing for Static Wireless Ad Hoc Networks with Unreliable Links, Yanwei Wu, Student Member, IEEE, and Yong Qi, Member, IEEE Abstract--Energy efficient routing and power. In this paper, we address the problem of energy efficient reliable routing for wireless ad hoc networks

  11. Low-Cost Truthful Multicast in Selfish and Rational Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Li, Xiang-Yang

    en- joy a more flexible composition. A wireless ad hoc network is a collection of radio devices limited transmission power. One of the dis- tinctive features of wireless networks is that the signal sent1 Low-Cost Truthful Multicast in Selfish and Rational Wireless Ad Hoc Networks Weizhao Wang Xiang

  12. A Cross-Layer Framework for Exploiting Virtual MISO Links in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Krishnamurthy, Srikanth

    A Cross-Layer Framework for Exploiting Virtual MISO Links in Mobile Ad Hoc Networks Gentian requiring the deployment of physical antenna arrays. Virtual MISO entails the simultaneous transmission. We present a novel multilayer approach for exploiting virtual MISO links in ad hoc networks

  13. Adding STARFire Analysis Layers to Google Earth through a KML Network Link 1) Launch Google Earth

    E-Print Network [OSTI]

    Adding STARFire Analysis Layers to Google Earth through a KML Network Link 1) Launch Google Earth 2) The network link will be added in the Places control within Google Earth. Select the node level in the tree layers for viewing within Google Earth. Double clicking on a layer will zoom you to the extent

  14. A Token Ring Protocol for Dynamic Ad-hoc Wireless Environments

    SciTech Connect (OSTI)

    Top, P; Kohlhepp, V; Dowla, F

    2005-09-30T23:59:59.000Z

    A wireless ad-hoc networking protocol is presented. The protocol is designed to be flexible, easy to use and adaptable to a wide variety of potential applications. The primary considerations in design are small code size, guaranteed bandwidth access, limited delay, and error resilience in a highly dynamic ad-hoc environment. These considerations are achieved through the use of token ring protocol.

  15. DELAR: Device/Energy/Load Aware Relaying in Heterogenous Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Zhang, Yanchao

    - newable energy sources. In DELAR the heterogeneity of nodal energy capabilities or device types, nodalDELAR: Device/Energy/Load Aware Relaying in Heterogenous Wireless Ad Hoc Networks Wei Liu Energy conservation is of great importance for mobile ad hoc networks in which most nodes are equipped

  16. Energy-ef cient Cache Replacement Policies for Cooperative Caching in Mobile Ad Hoc Network

    E-Print Network [OSTI]

    Chan, Edward

    Energy-ef cient Cache Replacement Policies for Cooperative Caching in Mobile Ad Hoc Network dynamically. Most existing cache strategies perform replacement independently, and they seldom consider coordinated replacement and energy saving issues in the context of a mobile ad hoc network. In this paper, we

  17. Energy Efficient Adaptation of Multicast Protocols in Power Controlled Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Prasanna, Viktor K.

    on energy efficiency in ad hoc networks. In this paper, we assume a more practical model for power controlEnergy Efficient Adaptation of Multicast Protocols in Power Controlled Wireless Ad Hoc Networks to power controlled networks is presented. Wireless nodes are assumed to have transmis- sion power control

  18. Joint Routing and Server Selection for Multiple Description Video Streaming in Ad Hoc Networks

    E-Print Network [OSTI]

    Hou, Y. Thomas

    Joint Routing and Server Selection for Multiple Description Video Streaming in Ad Hoc Networks ad hoc networks. In this paper, we study the important problem of joint routing and server selection by the proposed approach over existing server selection schemes. This justifies the importance of jointly

  19. Cross-Layer Design for Energy-Efficient Secure Multicast Communications in Ad Hoc Networks

    E-Print Network [OSTI]

    Poovendran, Radha

    Cross-Layer Design for Energy-Efficient Secure Multicast Communications in Ad Hoc Networks Loukas, University of Washington, Seattle, WA Abstract-- We consider the problem of secure multicast in an energy network operation in an wireless ad hoc environment. Energy is a physical layer parameter, while security

  20. ADHOC MAC: a new, flexible and reliable MAC architecture for ad-hoc networks

    E-Print Network [OSTI]

    Borgonovo, Flaminio

    ADHOC MAC: a new, flexible and reliable MAC architecture for ad-hoc networks F. Borgonovo, A, make the design of a prompt, efficient, flexible, and reliable MAC very difficult. An ad hoc network.e., transmissions that reach all terminals within the range allowed by the transmitting power. Due to radio range

  1. LE MATERIE PRIME RINNOVABILI E LA TRANSIZIONE DA ECONOMIA DI PRODOTTO AD ECONOMIA DI SISTEMA

    E-Print Network [OSTI]

    Genova, Università degli Studi di

    LE MATERIE PRIME RINNOVABILI E LA TRANSIZIONE DA ECONOMIA DI PRODOTTO AD ECONOMIA DI SISTEMA Per aumentando la qualità della vita dei suoi abitanti. Si tratta di favorire la transizione da un'economia di prodotto ad una economia di sistema, un salto culturale verso una sostenibilità economica ed ambientale che

  2. PCQoS: Power Controlled QoS in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Gomez-Castellanos, Javier

    Department of Electrical Engineering National University of Mexico, D.F., 04510 Email: {javierg@cs.dartmouth.edu Abstract--Mobile Ad hoc networks typically use a common transmission power approach for the discoveryS differentiation to applications in wireless ad hoc networks. I. INTRODUCTION The impact of transmission power

  3. Design techniques for low noise and high speed A/D converters

    E-Print Network [OSTI]

    Gupta, Amit Kumar

    2009-05-15T23:59:59.000Z

    . The resolution and sampling rate of an A/D converter vary depending on the application. Recently, there has been a growing demand for broadband (>1 MHz), high-resolution (>14bits) A/D converters. Applications that demand such converters include asymmetric digital...

  4. On the Connectivity in One-Dimensional Ad Hoc Wireless Networks with a Forbidden Zone

    E-Print Network [OSTI]

    On the Connectivity in One-Dimensional Ad Hoc Wireless Networks with a Forbidden Zone Xiaodong Hu1 This paper investigates the connectivity in one-dimensional ad hoc wireless networks with a forbidden zone. We derive the probability of the wireless networks which are composed of exactly m clusters by means

  5. An On-demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network

    E-Print Network [OSTI]

    An On-demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network Sheetalkumar Doshi of an on-demand minimum energy routing protocol and suggests mechanisms for their imple- mentation. We of an on-demand minimum energy routing protocol in terms of energy savings with an existing on-demand ad

  6. Regional tree growth and inferred summer climate in the Winnipeg River basin, Canada, since AD 1783

    E-Print Network [OSTI]

    Evans, Michael N.

    changes in summer climate within the Winnipeg River basin, Canada, since AD 1783. The basin drains parts the center of their range usually exhibit a more complex relationship with climate (Hughes, 2002Regional tree growth and inferred summer climate in the Winnipeg River basin, Canada, since AD 1783

  7. 1 ADS1210, 1211 24-Bit ANALOG-TO-DIGITAL CONVERTER

    E-Print Network [OSTI]

    Hochmuth, Olaff

    of 23 bits is achieved through the use of a very low-noise input amplifier at conversion rates up to 10 by provid- ing a low-noise programmable gain amplifier with a gain range of 1 to 16 in binary steps. The ADS1210 and ADS1211 are designed for high resolution measurement applications in smart trans- mitters

  8. Experimental Comparison of Algorithms for Energy-Efficient Multicasting in Ad Hoc

    E-Print Network [OSTI]

    Caragiannis, Ioannis

    Experimental Comparison of Algorithms for Energy-Efficient Multicasting in Ad Hoc Networks Stavros Technology Institute and Dept. of Computer Engineering and Informatics University of Patras, 26500 Rio, Greece Abstract. Energy is a scarce resource in ad hoc wireless networks and it is of paramount

  9. Fully Distributed Trust Model based on Trust Graph for Mobile Ad hoc Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    University of Technology, France. bouabdal@hds.utc.fr Abstract A mobile ad hoc network (MANET) is a wireless pre-existing in- frastructure; all networking operations (routing, mobility management, and so onFully Distributed Trust Model based on Trust Graph for Mobile Ad hoc Networks Mawloud Omar, Yacine

  10. The Quest for Security in Mobile Ad Hoc Networks \\Lambda JeanPierre Hubaux

    E-Print Network [OSTI]

    Bencsáth, Boldizsár

    network to work without any external management or configuration. Although not all mobile ad hoc networksThe Quest for Security in Mobile Ad Hoc Networks \\Lambda Jean­Pierre Hubaux Institute for Computer Communications and Applications Swiss Federal Institute of Technology -- Lausanne CH­1015, Switzerland Jean

  11. The Quest for Security in Mobile Ad Hoc Networks Jean-Pierre Hubaux

    E-Print Network [OSTI]

    Capkun, Srdjan

    management or con guration. Although not all mobile ad hoc networks are self-organized, this propertyThe Quest for Security in Mobile Ad Hoc Networks Jean-Pierre Hubaux Institute for Computer Communications and Applications Swiss Federal Institute of Technology ­ Lausanne CH-1015, Switzerland Jean

  12. High resolution A/D conversion based on piecewise conversion at lower resolution

    SciTech Connect (OSTI)

    Terwilliger, Steve (Albuquerque, NM)

    2012-06-05T23:59:59.000Z

    Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

  13. Report of the Ad Hoc Committee on Washington Natural Resource Agency Reform

    E-Print Network [OSTI]

    Borenstein, Elhanan

    Report of the Ad Hoc Committee on Washington Natural Resource Agency Reform February 16, 2010 of the Environment (CoEnv) to make useful contributions to the Governor's natural resource agency reform initiative. As a result, the Washington Natural Resource Agency Reform ad hoc Committee was established and given

  14. Hop-Reservation Multiple Access (HRMA) for Ad-Hoc Networks

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Hop-Reservation Multiple Access (HRMA) for Ad-Hoc Networks Zhenyu Tang and J. J. Garcia (HRMA) for wireless ad-hoc networks (multi-hop packet radio networks) is introduced, specified and analyzed. HRMA is based on simple half-duplex, very-slow frequency-hopping spread spectrum (FHSS) radios

  15. HopReservation Multiple Access (HRMA) for AdHoc Networks \\Lambda

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Hop­Reservation Multiple Access (HRMA) for Ad­Hoc Networks \\Lambda Zhenyu Tang and J. J. Garcia (HRMA) for wireless ad­hoc networks (multi­hop packet radio networks) is introduced, specified and analyzed. HRMA is based on simple half­duplex, very­slow frequency­hopping spread spectrum (FHSS) radios

  16. Design techniques for low noise and high speed A/D converters 

    E-Print Network [OSTI]

    Gupta, Amit Kumar

    2009-05-15T23:59:59.000Z

    . The resolution and sampling rate of an A/D converter vary depending on the application. Recently, there has been a growing demand for broadband (>1 MHz), high-resolution (>14bits) A/D converters. Applications that demand such converters include asymmetric digital...

  17. Energy-Efficient Reliable Routing Considering Residual Energy in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Langendoen, Koen

    Energy-Efficient Reliable Routing Considering Residual Energy in Wireless Ad Hoc Networks Javad minimum energy routing (RMER). RMECR addresses three important requirements of ad hoc networks: energy-efficiency energy of nodes as well as quality of links to find energy-efficient and reliable routes that increase

  18. MobiSN: Semantics-based Mobile Ad Hoc Social Network Framework

    E-Print Network [OSTI]

    Li, Juan "Jen"

    MobiSN: Semantics-based Mobile Ad Hoc Social Network Framework Juan Li Department of Computer.khan@ndsu.edu Abstract--Mobile ad hoc social networks are self-configuring social networks that connect users using mobile devices, such as laptops, PDAs, and cellular phones. These social networks facilitate users

  19. Degree Distribution and Hopcount in Wireless Ad-hoc Networks R. Hekmat, P. Van Mieghem

    E-Print Network [OSTI]

    Van Mieghem, Piet

    Degree Distribution and Hopcount in Wireless Ad-hoc Networks R. Hekmat, P. Van Mieghem Delft focus in this article is on the degree distribution and hopcount in these networks. The results that the degree distribution in wireless ad-hoc networks is binomial for low values of the mean degree. Further

  20. Progressive Network Coding for Message-Forwarding in Ad-Hoc Wireless Networks

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    . This paper considers the multi-hop transmission prob- lem in wireless ad-hoc networks. In a three-node sce of multi- hop transmission. The new framework, exploiting the technology of progressive network codingProgressive Network Coding for Message-Forwarding in Ad-Hoc Wireless Networks Xingkai Bao and Jing

  1. Massive atmospheric sulfur loading of the AD 1600 Huaynaputina eruption and implications for petrologic sulfur estimates

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for petrologic sulfur estimates Fidel Costa1 and Bruno Scaillet Institut des Sciences de la Terre d'Orle´ans, UMR petrological, analytical, and thermodyna- mical data to constrain the sulfur yield of the AD 1600 Huaynaputina loading of the AD 1600 Huaynaputina eruption and implications for petrologic sulfur estimates, Geophys

  2. A Special-Purpose Peer-to-Peer File Sharing System for Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Lindemann, Christoph

    application scenarios include sharing traffic and weather data by car-to-car communication in a wideA Special-Purpose Peer-to-Peer File Sharing System for Mobile Ad Hoc Networks Alexander Klemm-to-peer (P2P) file sharing for mobile ad hoc networks (MANET) requires the construction of a search algorithm

  3. The secret symmetries of the AdS/CFT reflection matrices

    E-Print Network [OSTI]

    Vidas Regelskis

    2011-08-27T23:59:59.000Z

    We find new twisted Yangian symmetries of the AdS/CFT reflection matrices for the Y=0 maximal giant graviton and D5-brane. These new symmetries originate from the known secret symmetries of the Yangian symmetry of the AdS/CFT S-matrix.

  4. Inducing Spatial Clustering in MAC Contention for Spread Spectrum Ad Hoc Networks

    E-Print Network [OSTI]

    de Veciana, Gustavo

    . Our premise is that such networks are well suited to meet quality of service and energy efficiency promise towards achieving high spatial reuse, QoS, and energy efficiency in spread spectrum ad hoc goals. At least two other objectives are critical in some ad hoc network applications: energy efficiency

  5. On the Effectiveness of Monitoring for Intrusion Detection in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Chen, Ing-Ray

    to that of the experimental testbed. Simulations of larger (50-node) ad hoc networks indicate that monitoring-based intrusion evaluations of IDTs are based on small testbed configura- tions, or simulations which do not incorporate any on monitoring- based intrusion detection for ad hoc networks. Experimental results show that, even for a simple

  6. Securing Ad Hoc Wireless Networks Against Data Injection Attacks Using Firewalls

    E-Print Network [OSTI]

    Kasera, Sneha Kumar

    Securing Ad Hoc Wireless Networks Against Data Injection Attacks Using Firewalls Jun Cheol Park-- We propose to secure ad hoc networks against data injection attacks by placing firewall functionality] simulations. Our results show that our algorithm can find near-optimal solutions. Based on a simple analysis

  7. Fuzzy Trust Recommendation Based on Collaborative Filtering for Mobile Ad-hoc Networks

    E-Print Network [OSTI]

    Zhang, Yi

    Fuzzy Trust Recommendation Based on Collaborative Filtering for Mobile Ad-hoc Networks Junhai Luo1--Mobile ad-hoc networks (MANETs) are based on the cooperative and trust characteristic of the mobile nodes focused on building up trust among distributed network nodes to simulate cooperation and improving

  8. A Trust-based Architecture for Managing Certificates in Vehicular Ad hoc Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    propose a secure and distributed public key infrastructure for vehicular ad hoc networks VANETs basedA Trust-based Architecture for Managing Certificates in Vehicular Ad hoc Networks Tahani Gazdar authority CA. We conducted a set of simulations in which we evaluate the efficiency and the stability

  9. Preventing Wormhole Attacks on Wireless Ad Hoc Networks: A Graph Theoretic Approach

    E-Print Network [OSTI]

    Lazos, Loukas

    then propose a Local Broad- cast Key (LBK) based method to secure an ad hoc network from wormhole attacks simulation results to illustrate our theory. Index Terms-- wormhole, security, vulnerability, ad hoc net a decentralized realization for LBK establishment, and provide an analytical evaluation of the security level

  10. MFR PAPER 1300 Shellfish Diseases

    E-Print Network [OSTI]

    promise for the efficient recycling of organic waste materials, such as agricultural wastes, and metazoan parasitic and infectious agents. In addition, predators, toxic agents, and fouling organisms studied. DISEASES OF SHELLFISH A list of organisms that cause com- mon diseases in oysters is shown

  11. Early detection of contagious diseases

    DOE Patents [OSTI]

    Colston, Jr., Billy W. (San Ramon, CA); Milanovich, Fred P. (Lafayette, CA); Estacio, Pedro (Mission San Jose, CA); Chang, John (Walnut Creek, CA)

    2011-08-09T23:59:59.000Z

    This invention provides an electronic proximity apparatus and a surveillance method using such an apparatus for alerting individuals that are exposed to a contagious disease. When a person becomes symptomatic and is diagnosed as positive for a given contagious agent, individuals that have recently maintained a threshold proximity with respect to an infected individual are notified and advised to seek immediate medial care. Treatment of individuals in the very early phases of infection (pre-symptomatic) significantly reduces contagiousness of the infected population first exposed to the contagious disease, thus preventing spread of the disease throughout the general population.

  12. The SU(1|2) and SU(2|2) Sectors from Superstrings in AdS5 x S5

    E-Print Network [OSTI]

    Shijong Ryang

    2006-04-03T23:59:59.000Z

    For the \\kappa-symmetry gauge fixed superstring action in AdS_5 x S^5 we consider the fermionic fluctuations over a circular bosonic string background with two angular momenta and two winding numbers in S^5. The SU(2)-type redefinitions of fermionic fields and the first-string limit generate a truncated fermionic action for the SU(1|2) sector. It is expressed in a two-dimensional Lorentz-invariant form of a massive Dirac fermion and the plane-wave spectrum for the fermionic excitations is derived. The fermionic spectrum for the SU(2|2) sector is also analyzed.

  13. The Blackbody Radiation Laws in the $ \\textrm{AdS}_5 \\times {\\cal S}^5 $ Spacetime

    E-Print Network [OSTI]

    Ramaton Ramos; Henrique Boschi Filho

    2014-09-25T23:59:59.000Z

    In the footsteps of our previous work \\cite{RamatonBoschi} we generalize the Stefan-Boltzmann and Wien's displacement laws for the $ \\textrm{AdS}_5 \\times {\\cal S}^5 $ spacetime, the background of the AdS/CFT correspondence foremost realization. Our results take into account the $ \\textrm{AdS}_5 \\times {\\cal S}^5 $ full dimensionality in the electromagnetic field $A^{\\mu}$ wave equation, which yields the higher-dimensional blackbody characteristic features suggested in literature. In particular, the total radiated power and the spectral radiancy match the original Stefan-Boltzmann and Wien's displacement laws in the low-energy regime up to available experimental data.

  14. Lessons from a rare disease

    E-Print Network [OSTI]

    Dutchen, Stephanie Lynn

    2009-01-01T23:59:59.000Z

    Progeria is a genetic aging disease of childhood affecting an estimated one in four to eight million births. Children with progeria experience a range of developmental disorders and aging-like symptoms, including wrinkled ...

  15. A Manual of Poultry Diseases.

    E-Print Network [OSTI]

    Hall, C. F.; Bell, R. R.; Clifford, R. L., Jr.; Glass, S. E.; Grimes, J. E.; Grumbles, L. C.; Keahey, E. E.; Wormell, B. C.

    1971-01-01T23:59:59.000Z

    surrounding the term "sanitation" can be avoided by using the expression "management and sanitation for disease preven- , tion." This phrase then would be defined as all practices, specific and nonspecific, that the poultry- man applies to ptevent.... Change litter and thoroughly clean and disinfect the house and equipment between each group of birds. While litter selection and management is a large subject, applying this recommendation as a general practice will prevent many disease and parasite...

  16. A Century of Progress: Milestones in Sickle Cell Disease

    E-Print Network [OSTI]

    Bandettini, Peter A.

    Disease? Sickle cell disease, also known as sickle cell anemia, is inherited. People who have the disease

  17. Imaging Lung Disease in Systemic Sclerosis

    E-Print Network [OSTI]

    Strollo, Diane; Goldin, Jonathan

    2010-01-01T23:59:59.000Z

    W, et al. : Interstitial lung disease in progressiveGL, Myers JL: Diffuse lung disease: diagnostic accuracy ofsurgical biopsy of the lung. Radiology 1997, 205:229–234.

  18. Technology transition in the national air transportation system : market failure and game theoretic analysis with application to ADS-B

    E-Print Network [OSTI]

    Hu, Xiaojie

    2008-01-01T23:59:59.000Z

    This research analyzes the problem of technology transition in the national air transportation system, focusing on the implementation of Automatic Dependent Surveillance-Broadcast (ADS-B). ADS-B is a key technology in the ...

  19. Service Provision in Disconnected Mobile Ad hoc Networks Nicolas Le Sommer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Service Provision in Disconnected Mobile Ad hoc Networks Nicolas Le Sommer Valoria Laboratory, University of South Brittany Nicolas.Le-Sommer@univ-ubs.fr Abstract With the proliferation of mobiles devices

  20. Autonomous Undersea Systems Network (AUSNet) Protocols To Support Ad-Hoc AUV Communications

    E-Print Network [OSTI]

    semi-autonomous networked robots. Emerging flexible low bandwidth, energy efficient architectures opposed to network support) data transmissions. Current efforts are focused on transitionAutonomous Undersea Systems Network (AUSNet) ­ Protocols To Support Ad-Hoc AUV Communications