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Sample records for exhibits heightened sensitivity

  1. Mcl-1 downregulation leads to the heightened sensitivity exhibited by BCR-ABL positive ALL to induction of energy and ER-stress.

    Science.gov (United States)

    Leclerc, Guy J; DeSalvo, Joanna; Du, Jianfeng; Gao, Ningguo; Leclerc, Gilles M; Lehrman, Mark A; Lampidis, Theodore J; Barredo, Julio C

    2015-08-20

    BCR-ABL positive (+) acute lymphoblastic leukemia (ALL) accounts for ∼30% of cases of ALL. We recently demonstrated that 2-deoxy-d-glucose (2-DG), a dual energy (glycolysis inhibition) and ER-stress (N-linked-glycosylation inhibition) inducer, leads to cell death in ALL via ER-stress/UPR-mediated apoptosis. Among ALL subtypes, BCR-ABL+ ALL cells exhibited the highest sensitivity to 2-DG suggesting BCR-ABL expression may be linked to this increased vulnerability. To confirm the role of BCR-ABL, we constructed a NALM6/BCR-ABL stable cell line and found significant increase in 2-DG-induced apoptosis compared to control. We found that Mcl-1 was downregulated by agents inducing ER-stress and Mcl-1 levels correlated with ALL sensitivity. In addition, we showed that Mcl-1 expression is positively regulated by the MEK/ERK pathway, dependent on BCR-ABL, and further downregulated by combining ER-stressors with TKIs. We determined that energy/ER stressors led to translational repression of Mcl-1 via the AMPK/mTOR and UPR/PERK/eIF2α pathways. Taken together, our data indicate that BCR-ABL+ ALL exhibits heightened sensitivity to induction of energy and ER-stress through inhibition of the MEK/ERK pathway, and translational repression of Mcl-1 expression via AMPK/mTOR and UPR/PERK/eIF2α pathways. This study supports further consideration of strategies combining energy/ER-stress inducers with BCR-ABL TKIs for future clinical translation in BCR-ABL+ ALL patients. Copyright © 2015 Elsevier Ltd. All rights reserved.

  2. Heightened sensitivity to reward and punishment in anorexia nervosa.

    Science.gov (United States)

    Jappe, Leah M; Frank, Guido K W; Shott, Megan E; Rollin, Michael D H; Pryor, Tamara; Hagman, Jennifer O; Yang, Tony T; Davis, Elizabeth

    2011-05-01

    The objective of this study is to test whether females with anorexia nervosa (AN) have increased sensitivity to punishing or rewarding stimuli, behaviors that could drive high self-control and anxious, avoidant behaviors. Sixty-four females completed the study: 33 control females (CFs, mean age 19.7 years) and 31 females with AN (mean age 19.6 years). Participants completed diagnostic exams, questionnaires for eating disorder severity and personality, and the Sensitivity to Punishment/Sensitivity to Reward Questionnaire (SPSRQ). Females with AN scored higher than CFs on SPSRQ sensitivity to punishment (p reward (p = 0.005). Females with AN without anxiety or depression continued to have increased SPSRQ scores compared to CFs. This is the first study comparing the SPSRQ in females with AN and CFs. Results suggest that reward and punishment sensitivity are increased in females with AN and could be potential trait markers. It is possible that harm-avoidant, anxious behaviors in females with AN are related to this heightened sensitivity. Copyright © 2010 Wiley Periodicals, Inc.

  3. Heightened sensitivity to punishment and reward in anorexia nervosa.

    Science.gov (United States)

    Glashouwer, Klaske A; Bloot, Lotte; Veenstra, Esther M; Franken, Ingmar H A; de Jong, Peter J

    2014-04-01

    The aim of this study was to investigate reinforcement sensitivity in anorexia nervosa (AN). It was tested whether self-reported punishment (PS) and reward sensitivity (RS) differed between adolescents with AN and healthy controls, and/or between AN-subtypes. In addition, the predictive validity of PS and RS was examined for AN symptoms one year later. In total, 165 female adolescents admitted for treatment of AN or eating disorder not otherwise specified resembling AN and 72 controls participated in the study. Participants completed measurements for eating disorder severity and the Sensitivity to Punishment/Sensitivity to Reward Questionnaire (SPSRQ). Percentage of underweight and severity of AN symptoms were measured again after one year in individuals with AN. Individuals with AN scored higher on PS and RS than controls. In addition, the AN purging type showed higher PS than the AN restrictive type, whereas there were no differences in RS between AN-subtypes. Regression analyses indicated that PS and RS were independently associated with the degree of eating disorder symptoms, whereas only PS was related to percentage underweight. Yet, neither RS nor PS were related to percentage of underweight and AN symptoms after one year. Although the present study clearly demonstrated that heightened punishment and reward sensitivity are both linked to AN, there was no evidence that these characteristics are also involved in the course of AN symptoms. Copyright © 2014 Elsevier Ltd. All rights reserved.

  4. Power Heightens Sensitivity to Unfairness Against the Self.

    Science.gov (United States)

    Sawaoka, Takuya; Hughes, Brent L; Ambady, Nalini

    2015-08-01

    Power is accompanied by a sense of entitlement, which shapes reactions to self-relevant injustices. We propose that powerful people more strongly expect to be treated fairly and are faster to perceive unjust treatment that violates these expectations. After preliminary data demonstrated that power leads people to expect fair outcomes for themselves, we conducted four experiments. Participants primed with high (vs. low) power were faster to identify violations of distributive justice in which they were victims (Study 1). This effect was specific to self-relevant injustices (Study 2) and generalized to violations of interpersonal justice (Study 3). Finally, participants primed with high power were more likely to take action against unfair treatment (Study 4). These findings suggest a process by which hierarchies may be maintained: Whereas the powerless are comparatively less sensitive to unfair treatment, the powerful may retain their social standing by quickly perceiving and responding to self-relevant injustices. © 2015 by the Society for Personality and Social Psychology, Inc.

  5. Heightened Olfactory Sensitivity in Young Females with Recent-Onset Anorexia Nervosa and Recovered Individuals.

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    Mette Bentz

    Full Text Available Olfaction may be related to food restriction and weight loss. However, reports regarding olfactory function in individuals with anorexia nervosa (AN have been inconclusive.Characterize olfactory sensitivity and identification in female adolescents and young adults with first-episode AN and young females recovered from AN.We used the Sniffin' Sticks Odor Threshold Test and Odor Identification Test to assess 43 participants with first-episode AN, 27 recovered participants, and 39 control participants. Participants completed the Importance of Olfaction questionnaire, the Beck Youth Inventory and the Eating Disorder Inventory. We also conducted a psychiatric diagnostic interview and the Autism Diagnostic Observation Schedule with participants.Both clinical groups showed heightened olfactory sensitivity. After excluding participants with depression, participants with first-episode AN identified more odors than recovered participants.Heightened olfactory sensitivity in AN may be independent of clinical status, whereas only individuals with current AN and without depression show more accurate odor identification.

  6. The link between hypomania risk and creativity: The role of heightened behavioral activation system (BAS) sensitivity.

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    Kim, Bin-Na; Kwon, Seok-Man

    2017-06-01

    The relationship between bipolar disorder (BD) and creativity is well-known; however, relatively little is known about its potential mechanism. We investigated whether heightened behavioral activation system (BAS) sensitivity may mediate such relationship. Korean young adults (N=543) completed self-report questionnaires that included the Hypomanic Personality Scale (HPS), the Behavioral Activation System(BAS) Scale, the Everyday Creativity Scale (ECS), the Positive Affect and Negative Affect Schedule (PANAS), and the Altman Self-Rating Mania Scale (ASRM). Correlational, hierarchical regression and mediation analyses using bootstrap confidence intervals were conducted. As predicted, BAS sensitivity was associated with self-reported creativity as well as hypomania risk and symptoms. Even when positive affect was controlled, BAS sensitivity predicted incrementally significant variance in explaining creativity. In mediation analysis, BAS sensitivity partially mediated the relation between hypomania risk and creativity. Reliance on self-report measures in assessing creativity and usage of non-clinical sample. BAS sensitivity was related not only to mood pathology but also to creativity. As a basic affective temperament, BAS sensitivity may help explain incompatible sides of adaptation associated with BD. Copyright © 2017 Elsevier B.V. All rights reserved.

  7. Heightened sensitivity to emotional expressions in generalised anxiety disorder, compared to social anxiety disorder, and controls.

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    Bui, Eric; Anderson, Eric; Goetter, Elizabeth M; Campbell, Allison A; Fischer, Laura E; Barrett, Lisa Feldman; Simon, Naomi M

    2017-01-01

    Few studies have examined potential differences between social anxiety disorder (SAD) and generalised anxiety disorder (GAD) in the sensitivity to detect emotional expressions. The present study aims to compare the detection of emotional expressions in SAD and GAD. Participants with a primary diagnosis of GAD (n = 46), SAD (n = 70), and controls (n = 118) completed a morph movies task. The task presented faces expressing increasing degrees of emotional intensity, slowly changing from a neutral to a full-intensity happy, sad, or angry expressions. Participants used a slide bar to view the movie frames from left to right, and to stop at the first frame where they perceived an emotion. The frame selected thus indicated the intensity of emotion required to identify the facial expression. Participants with GAD detected the onset of facial emotions at lower intensity of emotion than participants with SAD (p = 0.002) and controls (p = 0.039). In a multiple regression analysis controlling for age, race, and depressive symptom severity, lower frame at which the emotion was detected was independently associated and GAD diagnosis (B = -5.73, SE = 1.74, p < 0.01). Our findings suggest that individuals with GAD exhibit enhanced detection of facial emotions compared to those with SAD or controls.

  8. Musical training heightens auditory brainstem function during sensitive periods in development

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    Erika eSkoe

    2013-09-01

    Full Text Available Experience has a profound influence on how sound is processed in the brain. Yet little is known about how enriched experiences interact with developmental processes to shape neural processing of sound. We examine this question as part of a large cross-sectional study of auditory brainstem development involving more than 700 participants, 213 of whom were classified as musicians. We hypothesized that experience-dependent processes piggyback on developmental processes, resulting in a waxing-and-waning effect of experience that tracks with the undulating developmental baseline. This hypothesis led to the prediction that experience-dependent plasticity would be amplified during periods when developmental changes are underway (i.e., early and later in life and that the peak in experience-dependent plasticity would coincide with the developmental apex for each subcomponent of the auditory brainstem response. Consistent with our predictions, we reveal that musicians have heightened response features at distinctive times in the life span that coincide with periods of developmental change and climax. The effect of musicianship is also quite specific: we find that only select components of auditory brainstem activity are affected, with musicians having heightened function for onset latency, high frequency phase-locking, and response consistency, and with little effect observed for other measures, including lower frequency phase-locking and non-stimulus-related activity. By showing that musicianship imparts a neural signature that is especially evident during childhood and old age, our findings reinforce the idea that the nervous system’s response to sound is chiseled by how a person interacts with his specific auditory environment, with the effect of the environment wielding its greatest influence during certain privileged windows of development.

  9. Heightened Olfactory Sensitivity in Young Females with Recent-Onset Anorexia Nervosa and Recovered Individuals

    DEFF Research Database (Denmark)

    Bentz, Mette; Guldberg, Johanne; Vangkilde, Signe

    2017-01-01

    INTRODUCTION: Olfaction may be related to food restriction and weight loss. However, reports regarding olfactory function in individuals with anorexia nervosa (AN) have been inconclusive. OBJECTIVE: Characterize olfactory sensitivity and identification in female adolescents and young adults...

  10. BDNF heightens the sensitivity of motor neurons to excitotoxic insults through activation of TrkB

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    Hu, Peter; Kalb, Robert G.; Walton, K. D. (Principal Investigator)

    2003-01-01

    The survival promoting and neuroprotective actions of brain-derived neurotrophic factor (BDNF) are well known but under certain circumstances this growth factor can also exacerbate excitotoxic insults to neurons. Prior exploration of the receptor through which BDNF exerts this action on motor neurons deflects attention away from p75. Here we investigated the possibility that BDNF acts through the receptor tyrosine kinase, TrkB, to confer on motor neurons sensitivity to excitotoxic challenge. We blocked BDNF activation of TrkB using a dominant negative TrkB mutant or a TrkB function blocking antibody, and found that this protected motor neurons against excitotoxic insult in cultures of mixed spinal cord neurons. Addition of a function blocking antibody to BDNF to mixed spinal cord neuron cultures is also neuroprotective indicating that endogenously produced BDNF participates in vulnerability to excitotoxicity. We next examined the intracellular signaling cascades that are engaged upon TrkB activation. Previously we found that inhibition of the phosphatidylinositide-3'-kinase (PI3'K) pathway blocks BDNF-induced excitotoxic sensitivity. Here we show that expression of a constitutively active catalytic subunit of PI3'K, p110, confers excitotoxic sensitivity (ES) upon motor neurons not incubated with BDNF. Parallel studies with purified motor neurons confirm that these events are likely to be occuring specifically within motor neurons. The abrogation of BDNF's capacity to accentuate excitotoxic insults may make it a more attractive neuroprotective agent.

  11. Unstable maternal environment, separation anxiety, and heightened CO2 sensitivity induced by gene-by-environment interplay.

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    Francesca R D'Amato

    2011-04-01

    Full Text Available In man, many different events implying childhood separation from caregivers/unstable parental environment are associated with heightened risk for panic disorder in adulthood. Twin data show that the occurrence of such events in childhood contributes to explaining the covariation between separation anxiety disorder, panic, and the related psychobiological trait of CO(2 hypersensitivity. We hypothesized that early interference with infant-mother interaction could moderate the interspecific trait of response to CO(2 through genetic control of sensitivity to the environment.Having spent the first 24 hours after birth with their biological mother, outbred NMRI mice were cross-fostered to adoptive mothers for the following 4 post-natal days. They were successively compared to normally-reared individuals for: number of ultrasonic vocalizations during isolation, respiratory physiology responses to normal air (20%O(2, CO(2-enriched air (6% CO(2, hypoxic air (10%O(2, and avoidance of CO(2-enriched environments.Cross-fostered pups showed significantly more ultrasonic vocalizations, more pronounced hyperventilatory responses (larger tidal volume and minute volume increments to CO(2-enriched air and heightened aversion towards CO(2-enriched environments, than normally-reared individuals. Enhanced tidal volume increment response to 6%CO(2 was present at 16-20, and 75-90 postnatal days, implying the trait's stability. Quantitative genetic analyses of unrelated individuals, sibs and half-sibs, showed that the genetic variance for tidal volume increment during 6%CO(2 breathing was significantly higher (Bartlett χ = 8.3, p = 0.004 among the cross-fostered than the normally-reared individuals, yielding heritability of 0.37 and 0.21 respectively. These results support a stress-diathesis model whereby the genetic influences underlying the response to 6%CO(2 increase their contribution in the presence of an environmental adversity. Maternal grooming

  12. Murine and human CFTR exhibit different sensitivities to CFTR potentiators.

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    Cui, Guiying; McCarty, Nael A

    2015-10-01

    Development of therapeutic molecules with clinical efficacy as modulators of defective CFTR includes efforts to identify potentiators that can overcome or repair the gating defect in mutant CFTR channels. This has taken a great leap forward with the identification of the potentiator VX-770, now available to patients as "Kalydeco." Other small molecules with different chemical structure also are capable of potentiating the activity of either wild-type or mutant CFTR, suggesting that there are features of the protein that may be targeted to achieve stimulation of channel activity by structurally diverse compounds. However, neither the mechanisms by which these compounds potentiate mutant CFTR nor the site(s) where these compounds bind have been identified. This knowledge gap partly reflects the lack of appropriate experimental models to provide clues toward the identification of binding sites. Here, we have compared the channel behavior and response to novel and known potentiators of human CFTR (hCFTR) and murine (mCFTR) expressed in Xenopus oocytes. Both hCFTR and mCFTR were blocked by GlyH-101 from the extracellular side, but mCFTR activity was increased with GlyH-101 applied directly to the cytoplasmic side. Similarly, glibenclamide only exhibited a blocking effect on hCFTR but both blocked and potentiated mCFTR in excised membrane patches and in intact oocytes. The clinically used CFTR potentiator VX-770 transiently increased hCFTR by ∼13% but potentiated mCFTR significantly more strongly. Our results suggest that mCFTR pharmacological sensitivities differ from hCFTR, which will provide a useful tool for identifying the binding sites and mechanism for these potentiators. Copyright © 2015 the American Physiological Society.

  13. Exhibition

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    Staff Association

    2017-01-01

    A Look of Hope Islam Mahmoud Sweity From 19 to 30 June 2017 CERN Meyrin, Main Building Islam Mahmoud Sweity Islam Mahmoud Sweity was born in 1997 at Beit Awwa, Palestine. She is currently following a course to get an Art diploma of Painting at the college of Fine Arts at An-Najah National University under the supervision of Esmat Al As'aad. Her portraits, landscapes and still life paintings are full of life and shining colours. Charged of emotional empathy they catch the attention of the viewer and are reminding us that life is beautiful and worth living in spite of all difficulties we have to go through. She participated in many exhibitions and has exposed her drawings in 2015 at CERN and in France in the framework of the exhibition "The Origin“, and in 2017 in the Former Yugoslav Republic of Macedonia, Palestina and Jordan. In this exhibition the oil paintings made in the past year will be presented. For more information : staff.association@cern.ch | T&eacu...

  14. Exhibition

    CERN Multimedia

    Staff Association

    2016-01-01

    Encounters Hanne Blitz From February 1st to 12th 2016 CERN Meyrin, Main Building What is our reaction to a first encounter with a tourist attraction? Contemporary Dutch painter Hanne Blitz captures visitors' responses to art and architecture, sweeping vistas and symbolic memorials. Encounters, a series of oil paintings curated specially for this CERN exhibition, depicts tourists visiting cultural highlights around the world. A thought-provoking journey not to be missed, and a tip of the hat to CERN's large Hadron Collider.

  15. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Sintropie Flavio Pellegrini From 13 to 24 March 2017 CERN Meyrin, Main Building Energia imprigionata - Flavio Pellegrini. The exhibition is composed by eleven wood artworks with the expression of movement as theme. The artworks are the result of harmonics math applied to sculpture. The powerful black colour is dominated by the light source, generating reflexes and modulations. The result is a continuous variation of perspective visions. The works generate, at a first approach, an emotion of mystery and incomprehension, only a deeper contemplation lets one discover entangling and mutative details, evidencing the elegance of the lines and letting the meaning emerge. For more information : staff.association@cern.ch | Tél: 022 766 37 38

  16. Offspring of prenatal IV nicotine exposure exhibit increased sensitivity to the reinforcing effects of methamphetamine

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    Steven Brown Harrod

    2012-06-01

    Full Text Available Maternal smoking during pregnancy is associated with increased substance abuse in offspring. Preclinical research shows that in utero exposure to nicotine, the primary psychoactive compound in tobacco smoke, influences the neurodevelopment of reward systems and alters motivated behavior in offspring. The present study determined if prenatal nicotine (PN exposure altered the sensitivity to the reinforcing and aversive effects of methamphetamine (METH in offspring using a low dose, intravenous (IV exposure method. Pregnant dams were administered nicotine (0.05 mg/kg/injection or prenatal saline (PS 3×/day on gestational days 8-21, and adult offspring were tested using METH self-administration (experiment 1 or METH-induced conditioned taste aversion (CTA; experiment 2 procedures. For METH self-administration, animals were trained to respond for IV METH (0.05 mg/kg/injection; fixed-ratio 3 and they were tested on varying doses the reinforcer (0.0005-1.0 mg/kg/injection. For METH CTA, rats received three saccharin and METH pairings (0, 0.3, or 0.5 mg/kg, sc followed by fourteen daily extinction trials. Experiment 1: PN and PS animals exhibited inverted U-shaped dose-response curves; however, the PN animal’s curve was shifted to the left, suggesting PN animals were more sensitive to the reinforcing effects of METH. Experiment 2: METH CTA was acquired in a dose-dependent manner and the factor of PN exposure was not related to the acquisition or extinction of METH-induced CTA. There were no sex differences in either experiment. These results indicate that adult offspring of IV PN exposure exhibited altered motivation for the reinforcing effects of METH. This suggests that PN exposure, via maternal smoking, will alter the reinforcing effects of METH during later stages of development, and furthermore, will influence substance use vulnerability in adult human offspring.

  17. Diacylglycerol kinase β knockout mice exhibit lithium-sensitive behavioral abnormalities.

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    Kenichi Kakefuda

    Full Text Available BACKGROUND: Diacylglycerol kinase (DGK is an enzyme that phosphorylates diacylglycerol (DG to produce phosphatidic acid (PA. DGKβ is widely distributed in the central nervous system, such as the olfactory bulb, cerebral cortex, striatum, and hippocampus. Recent studies reported that the splice variant at the COOH-terminal of DGKβ was related to bipolar disorder, but its detailed mechanism is still unknown. METHODOLOGY/PRINCIPAL FINDINGS: In the present study, we performed behavioral tests using DGKβ knockout (KO mice to investigate the effects of DGKβ deficits on psychomotor behavior. DGKβ KO mice exhibited some behavioral abnormalities, such as hyperactivity, reduced anxiety, and reduced depression. Additionally, hyperactivity and reduced anxiety were attenuated by the administration of the mood stabilizer, lithium, but not haloperidol, diazepam, or imipramine. Moreover, DGKβ KO mice showed impairment in Akt-glycogen synthesis kinase (GSK 3β signaling and cortical spine formation. CONCLUSIONS/SIGNIFICANCE: These findings suggest that DGKβ KO mice exhibit lithium-sensitive behavioral abnormalities that are, at least in part, due to the impairment of Akt-GSK3β signaling and cortical spine formation.

  18. Grizzly bears exhibit augmented insulin sensitivity while obese prior to a reversible insulin resistance during hibernation.

    Science.gov (United States)

    Nelson, O Lynne; Jansen, Heiko T; Galbreath, Elizabeth; Morgenstern, Kurt; Gehring, Jamie Lauren; Rigano, Kimberly Scott; Lee, Jae; Gong, Jianhua; Shaywitz, Adam J; Vella, Chantal A; Robbins, Charles T; Corbit, Kevin C

    2014-08-05

    The confluence of obesity and diabetes as a worldwide epidemic necessitates the discovery of new therapies. Success in this endeavor requires translatable preclinical studies, which traditionally employ rodent models. As an alternative approach, we explored hibernation where obesity is a natural adaptation to survive months of fasting. Here we report that grizzly bears exhibit seasonal tripartite insulin responsiveness such that obese animals augment insulin sensitivity but only weeks later enter hibernation-specific insulin resistance (IR) and subsequently reinitiate responsiveness upon awakening. Preparation for hibernation is characterized by adiposity coupled to increased insulin sensitivity via modified PTEN/AKT signaling specifically in adipose tissue, suggesting a state of "healthy" obesity analogous to humans with PTEN haploinsufficiency. Collectively, we show that bears reversibly cope with homeostatic perturbations considered detrimental to humans and describe a mechanism whereby IR functions not as a late-stage metabolic adaptation to obesity, but rather a gatekeeper of the fed-fasting transition. Copyright © 2014 Elsevier Inc. All rights reserved.

  19. Bereavement and heightened existential awareness.

    Science.gov (United States)

    Yalom, I D; Lieberman, M A

    1991-11-01

    "Ask not for whom the bells toll; they toll for thee." John Donne's admonition, though written 350 years ago, endures with astonishing freshness; it speaks to something self-evident, to a truth that is well known to many who have experienced bereavement--that the death of a significant other has the potential to hurl the survivor into a confrontation with his/her own death. A confrontation with death--should we seek it? There is evidence in the clinical literature that in terminally ill patients such a confrontation may lead to pronounced positive psychological changes. Research (Yalom 1980) has documented that terminally ill patients may undergo a series of positive personal changes; they communicate more openly with family and close friends, they experience fewer fears, they rearrange their life priorities, they are less preoccupied with the trivialities of life, they live life more immediately rather than postpone experience and pleasure into the future. Does spousal bereavement in our culture confront individuals with their own personal death? Does it cause some widow/widowers to regard their existence in a different manner? If so, might it be possible that those bereaved individuals who examine their life deeply may have a different course of bereavement than those who do not look within? Might it even be possible that bereavement, for some individuals, results in psychological shifts analogous to the positive changes reported by terminally ill patients? These are the basic questions of our research inquiry. We designed a project which would allow us to determine, in a nonclinical sample of bereaved spouses, differences in the degree of existential awareness and the consequences of such awareness on the course of bereavement. We also attempted to determine which subjects were more likely to develop heightened existential awareness. The participants studied were part of an intervention project on bereavement in which we studied a sample of widows and widowers

  20. Hormone-sensitive lipase null mice exhibit signs of impaired insulin sensitivity whereas insulin secretion is intact

    DEFF Research Database (Denmark)

    Mulder, Hindrik; Sörhede-Winzell, Maria; Contreras, Juan Antonio

    2003-01-01

    Lipid metabolism plays an important role in glucose homeostasis under normal and pathological conditions. In adipocytes, skeletal muscle, and pancreatic beta-cells, lipids are mobilized from acylglycerides by the hormone-sensitive lipase (HSL). Here, the consequences of a targeted disruption of t....... Insulin secretion in vitro, examined by perifusion of isolated islets, was not impacted by HSL deficiency. Thus, HSL deficiency results in a moderate impairment of insulin sensitivity in multiple target tissues of the hormone but is compensated by hyperinsulinemia.......Lipid metabolism plays an important role in glucose homeostasis under normal and pathological conditions. In adipocytes, skeletal muscle, and pancreatic beta-cells, lipids are mobilized from acylglycerides by the hormone-sensitive lipase (HSL). Here, the consequences of a targeted disruption...... of increased amounts of insulin. Impaired insulin sensitivity was further indicated by retarded glucose disposal during an insulin tolerance test. A euglycemic hyperinsulinemic clamp revealed that hepatic glucose production was insufficiently blocked by insulin in HSL null mice. In vitro, insulin...

  1. The Compton Camera - medical imaging with higher sensitivity Exhibition LEPFest 2000

    CERN Multimedia

    2000-01-01

    The Compton Camera reconstructs the origin of Compton-scattered X-rays using electronic collimation with Silicon pad detectors instead of the heavy conventional lead collimators in Anger cameras - reaching up to 200 times better sensitivity and a factor two improvement in resolution. Possible applications are in cancer diagnosis, neurology neurobiology, and cardiology.

  2. Distinct subsets of nucleus basalis neurons exhibit similar sensitivity to excitotoxicity

    NARCIS (Netherlands)

    Harkany, Tibor; Varga, Csaba; Grosche, Jens; Mulder, Jan; Luiten, Paul G.M.; Hortobágyi, Tibor; Penke, Botond; Härtig, Wolfgang

    2002-01-01

    Excitotoxic lesions in the magnocellular nucleus basalis (MBN) lead to a significant damage of cholinergic neurons concomitant with increased amyloid precursor protein (APP) expression in the cerebral cortex. However, the sensitivity of non-cholinergic neurons to excitotoxicity, and changes of APP

  3. Geotropic sensitivity exhibited by single hornets: The influence of caste, age, light and temperature

    Science.gov (United States)

    Ishay, Jacob S.; Rosenzweig, Eyal; Abir, Irit

    Hornet (Vespa orientalis, Hymenoptera: Vespinae) workers, queens and males, aged 0-24 hours (i.e. juveniles) and 24 hours and more (i.e. adults) were tested for their responses to changes in the direction of the gravitational force while placed on a flat surface gradually tilted between 0.5° and 180°. The tests were run on non-blind and blind hornets, at temperatures ranging between 18°C and 35°C, in daylight as well as in the dark. Up to 18 hours of age, negative phototaxis prevailed among the hornets, which displayed a clear preference for remaining in the dark regardless of the geotropic position. Between 18-24 hours of age, there was gradual appearance of a sensitivity to change in the geotropic position. Above 24 hr of age, the hornets became sensitive to changes in their declinations, with workers becoming sensitive at a 3-5° declination, queens at 4-5° and males at a declination of 8-19° from the horizontal. Hornet response takes the form of an upward climb, to the highest point of the test surface. Such response required a temperature exceeding 24.8-25°C for workers, 23.2°C for queens and 20.8-21°C for males.

  4. Amygdala and auditory cortex exhibit distinct sensitivity to relevant acoustic features of auditory emotions.

    Science.gov (United States)

    Pannese, Alessia; Grandjean, Didier; Frühholz, Sascha

    2016-12-01

    Discriminating between auditory signals of different affective value is critical to successful social interaction. It is commonly held that acoustic decoding of such signals occurs in the auditory system, whereas affective decoding occurs in the amygdala. However, given that the amygdala receives direct subcortical projections that bypass the auditory cortex, it is possible that some acoustic decoding occurs in the amygdala as well, when the acoustic features are relevant for affective discrimination. We tested this hypothesis by combining functional neuroimaging with the neurophysiological phenomena of repetition suppression (RS) and repetition enhancement (RE) in human listeners. Our results show that both amygdala and auditory cortex responded differentially to physical voice features, suggesting that the amygdala and auditory cortex decode the affective quality of the voice not only by processing the emotional content from previously processed acoustic features, but also by processing the acoustic features themselves, when these are relevant to the identification of the voice's affective value. Specifically, we found that the auditory cortex is sensitive to spectral high-frequency voice cues when discriminating vocal anger from vocal fear and joy, whereas the amygdala is sensitive to vocal pitch when discriminating between negative vocal emotions (i.e., anger and fear). Vocal pitch is an instantaneously recognized voice feature, which is potentially transferred to the amygdala by direct subcortical projections. These results together provide evidence that, besides the auditory cortex, the amygdala too processes acoustic information, when this is relevant to the discrimination of auditory emotions. Copyright © 2016 Elsevier Ltd. All rights reserved.

  5. Homologous Recombination Defective Arabidopsis Mutants Exhibit Enhanced Sensitivity to Abscisic Acid.

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    Sujit Roy

    Full Text Available Abscisic acid (ABA acts as an important plant hormone in regulating various aspects of plant growth and developmental processes particularly under abiotic stress conditions. An increased ABA level in plant cells inhibits DNA replication and cell division, causing plant growth retardation. In this study, we have investigated the effects of ABA on the growth responses of some major loss-of-function mutants of DNA double-stand break (DSB repair genes in Arabidopsis during seed germination and early stages of seedling growth for understanding the role of ABA in the induction of genome instability in plants. A comparative analysis of ABA sensitivity of wild-type Arabidopsis and the knockout mutant lines related to DSB sensors, including atatm, atatr, the non-homologous end joining (NHEJ pathway genes, and mutants related to homologous recombination (HR pathway genes showed relatively enhanced sensitivity of atatr and HR-related mutants to ABA treatment. The expression levels of HR-related genes were increased in wild-type Arabidopsis (Col-0 during seed germination and early stages of seedling growth. Immunoblotting experiments detected phosphorylation of histone H2AX in wild-type (Col-0 and DSB repair gene mutants after ABA treatment, indicating the activation of DNA damage response due to ABA treatment. Analyses of DSB repair kinetics using comet assay under neutral condition have revealed comparatively slower DSB repair activity in HR mutants. Overall, our results have provided comprehensive information on the possible effect of ABA on DNA repair machinery in plants and also indicated potential functional involvement of HR pathway in repairing ABA induced DNA damage in Arabidopsis.

  6. Snakes exhibit tissue-specific variation in cardiotonic steroid sensitivity of Na+/K+-ATPase.

    Science.gov (United States)

    Mohammadi, Shabnam; Petschenka, Georg; French, Susannah S; Mori, Akira; Savitzky, Alan H

    2018-03-01

    Toads are among several groups of organisms chemically defended with lethal concentrations of cardiotonic steroids. As a result, most predators that prey on amphibians avoid toads. However, several species of snakes have gained resistance-conferring mutations of Na+/K+-ATPase, the molecular target of cardiotonic steroids, and can feed on toads readily. Despite recent advances in our understanding of this adaptation at the genetic level, we have lacked functional evidence for how mutations of Na+/K+-ATPase account for cardiotonic steroid resistance in snake tissues. To address this issue, it is necessary to determine how the Na+/K+-ATPases of snakes react to the toxins. Some tissues might have Na+/K+-ATPases that are more susceptible than others and can thus provide clues about how the toxins influence organismal function. Here we provide a mechanistic link between observed Na+/K+-ATPase substitutions and observed resistance using actual snake Na+/K+-ATPases. We used an in vitro approach to determine the tissue-specific levels of sensitivity to cardiotonic steroids in select resistant and non-resistant snakes. We compared the sensitivities of select tissues within and between species. Our results suggest that resistant snakes contain highly resistant Na+/K+-ATPases in their heart and kidney, both of which rely heavily on the enzymes to function, whereas tissues that do not rely as heavily on Na+/K+-ATPases or might be protected from cardiotonic steroids by other means (liver, gut, and brain) contain non-resistant forms of the enzyme. This study reveals functional evidence that tissue-level target-site insensitivity to cardiotonic steroids varies not only among species but also across tissues within resistant taxa. Copyright © 2017 Elsevier Inc. All rights reserved.

  7. A Chimeric UDP-Glucose Pyrophosphorylase Produced by Protein Engineering Exhibits Sensitivity to Allosteric Regulators

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    Matías D. Asención Diez

    2013-05-01

    Full Text Available In bacteria, glycogen or oligosaccharide accumulation involves glucose-1-phosphate partitioning into either ADP-glucose (ADP-Glc or UDP-Glc. Their respective synthesis is catalyzed by allosterically regulated ADP-Glc pyrophosphorylase (EC 2.7.7.27, ADP-Glc PPase or unregulated UDP-Glc PPase (EC 2.7.7.9. In this work, we characterized the UDP-Glc PPase from Streptococcus mutans. In addition, we constructed a chimeric protein by cutting the C-terminal domain of the ADP-Glc PPase from Escherichia coli and pasting it to the entire S. mutans UDP-Glc PPase. Both proteins were fully active as UDP-Glc PPases and their kinetic parameters were measured. The chimeric enzyme had a slightly higher affinity for substrates than the native S. mutans UDP-Glc PPase, but the maximal activity was four times lower. Interestingly, the chimeric protein was sensitive to regulation by pyruvate, 3-phosphoglyceric acid and fructose-1,6-bis-phosphate, which are known to be effectors of ADP-Glc PPases from different sources. The three compounds activated the chimeric enzyme up to three-fold, and increased the affinity for substrates. This chimeric protein is the first reported UDP-Glc PPase with allosteric regulatory properties. In addition, this is a pioneer work dealing with a chimeric enzyme constructed as a hybrid of two pyrophosphorylases with different specificity toward nucleoside-diphospho-glucose and our results turn to be relevant for a deeper understanding of the evolution of allosterism in this family of enzymes.

  8. Abnormal nociception and opiate sensitivity of STOP null mice exhibiting elevated levels of the endogenous alkaloid morphine

    Directory of Open Access Journals (Sweden)

    Aunis Dominique

    2010-12-01

    Full Text Available Abstract Background- Mice deficient for the stable tubule only peptide (STOP display altered dopaminergic neurotransmission associated with severe behavioural defects including disorganized locomotor activity. Endogenous morphine, which is present in nervous tissues and synthesized from dopamine, may contribute to these behavioral alterations since it is thought to play a role in normal and pathological neurotransmission. Results- In this study, we showed that STOP null brain structures, including cortex, hippocampus, cerebellum and spinal cord, contain high endogenous morphine amounts. The presence of elevated levels of morphine was associated with the presence of a higher density of mu opioid receptor with a higher affinity for morphine in STOP null brains. Interestingly, STOP null mice exhibited significantly lower nociceptive thresholds to thermal and mechanical stimulations. They also had abnormal behavioural responses to the administration of exogenous morphine and naloxone. Low dose of morphine (1 mg/kg, i.p. produced a significant mechanical antinociception in STOP null mice whereas it has no effect on wild-type mice. High concentration of naloxone (1 mg/kg was pronociceptive for both mice strain, a lower concentration (0.1 mg/kg was found to increase the mean mechanical nociceptive threshold only in the case of STOP null mice. Conclusions- Together, our data show that STOP null mice displayed elevated levels of endogenous morphine, as well as an increase of morphine receptor affinity and density in brain. This was correlated with hypernociception and impaired pharmacological sensitivity to mu opioid receptor ligands.

  9. Unspliced precursors of NMD-sensitive β-globin transcripts exhibit decreased steady-state levels in erythroid cells.

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    Ana Morgado

    Full Text Available Nonsense-mediated mRNA decay (NMD is a quality control mechanism that detects and rapidly degrades mRNAs carrying premature translation-termination codons (PTCs. Mammalian NMD depends on both splicing and translation, and requires recognition of the premature stop codon by the cytoplasmic ribosomes. Surprisingly, some published data have suggested that nonsense codons may also affect the nuclear metabolism of the nonsense-mutated transcripts. To determine if nonsense codons could influence nuclear events, we have directly assessed the steady-state levels of the unspliced transcripts of wild-type and PTC-containing human β-globin genes stably transfected in mouse erythroleukemia (MEL cells, after erythroid differentiation induction, or in HeLa cells. Our analyses by ribonuclease protection assays and reverse transcription-coupled quantitative PCR show that β-globin pre-mRNAs carrying NMD-competent PTCs, but not those containing a NMD-resistant PTC, exhibit a significant decrease in their steady-state levels relatively to the wild-type or to a missense-mutated β-globin pre-mRNA. On the contrary, in HeLa cells, human β-globin pre-mRNAs carrying NMD-competent PTCs accumulate at normal levels. Functional analyses of these pre-mRNAs in MEL cells demonstrate that their low steady-state levels do not reflect significantly lower pre-mRNA stabilities when compared to the normal control. Furthermore, our results also provide evidence that the relative splicing efficiencies of intron 1 and 2 are unaffected. This set of data highlights potential nuclear pathways that might be promoter- and/or cell line-specific, which recognize the NMD-sensitive transcripts as abnormal. These specialized nuclear pathway(s may be superimposed on the general NMD mechanism.

  10. Adults with autism spectrum disorders exhibit decreased sensitivity to reward parameters when making effort-based decisions

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    Damiano Cara R

    2012-05-01

    Full Text Available Abstract Background Efficient effort expenditure to obtain rewards is critical for optimal goal-directed behavior and learning. Clinical observation suggests that individuals with autism spectrum disorders (ASD may show dysregulated reward-based effort expenditure, but no behavioral study to date has assessed effort-based decision-making in ASD. Methods The current study compared a group of adults with ASD to a group of typically developing adults on the Effort Expenditure for Rewards Task (EEfRT, a behavioral measure of effort-based decision-making. In this task, participants were provided with the probability of receiving a monetary reward on a particular trial and asked to choose between either an “easy task” (less motoric effort for a small, stable reward or a “hard task” (greater motoric effort for a variable but consistently larger reward. Results Participants with ASD chose the hard task more frequently than did the control group, yet were less influenced by differences in reward value and probability than the control group. Additionally, effort-based decision-making was related to repetitive behavior symptoms across both groups. Conclusions These results suggest that individuals with ASD may be more willing to expend effort to obtain a monetary reward regardless of the reward contingencies. More broadly, results suggest that behavioral choices may be less influenced by information about reward contingencies in individuals with ASD. This atypical pattern of effort-based decision-making may be relevant for understanding the heightened reward motivation for circumscribed interests in ASD.

  11. Innate immune defenses exhibit circadian rhythmicity and differential temporal sensitivity to a bacterial endotoxin in Nile tilapia (Oreochromis niloticus)

    DEFF Research Database (Denmark)

    Lazado, Carlo Cabacang; Skov, Peter Vilhelm; Pedersen, Per Bovbjerg

    2016-01-01

    exposed at ZT15. Taken together, this study shows that several key components of humoral immunity in tilapia exhibit circadian rhythms and adapt to photoperiodic changes. Further, results of the bacterial endotoxin challenge suggest that responsiveness of serum humoral factors to a biological insult......:24D (DD), for 20 days to characterize the rhythms of humoral immunity. Serum alkaline phosphatase (ALP), lysozyme (LYZ), peroxidase (PER) and protease (PRO) exhibited significant rhythmicity under LD but not in DD. No significant rhythms were observed in esterase (ESA) and anti-protease (ANTI......) in both photoperiod conditions. Fish reared under LD were subsequently subjected to DD while the group previously under DD was exposed to LD, and this carried on for 3 days before another set of samples was collected. Results revealed that the rhythms of LYZ, PER and PRO but not ALP persisted when...

  12. Two Groups of Thellungiella salsuginea RAVs Exhibit Distinct Responses and Sensitivity to Salt and ABA in Transgenic Arabidopsis.

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    Shaohui Yang

    Full Text Available Containing both AP2 domain and B3 domain, RAV (Related to ABI3/VP1 transcription factors are involved in diverse functions in higher plants. A total of eight TsRAV genes were isolated from the genome of Thellungiella salsuginea and could be divided into two groups (A- and B-group based on their sequence similarity. The mRNA abundance of all Thellungiella salsuginea TsRAVs followed a gradual decline during seed germination. In Thellungiella salsuginea seedling, transcripts of TsRAVs in the group A (A-TsRAVs were gradually and moderately reduced by salt treatment but rapidly and severely repressed by ABA treatment. In comparison, with a barely detectable constitutive expression, the transcriptional level of TsRAVs in the group B (B-TsRAVs exhibited a moderate induction in cotyledons when confronted with ABA. We then produced the "gain-of-function" transgenic Arabidopsis plants for each TsRAV gene and found that only 35S:A-TsRAVs showed weak growth retardation including reduced root elongation, suggesting their roles in negatively controlling plant growth. Under normal conditions, the germination process of all TsRAVs overexpressing transgenic seeds was inhibited with a stronger effect observed in 35S:A-TsRAVs seeds than in 35S:B-TsRAVs seeds. With the presence of NaCl, seed germination and seedling root elongation of all plants including wild type and 35S:TsRAVs plants were retarded and a more severe inhibition occurred to the 35S:A-TsRAV transgenic plants. ABA treatment only negatively affected the germination rates of 35S:A-TsRAV transgenic seeds but not those of 35S:B-TsRAV transgenic seeds. All 35S:TsRAVs transgenic plants showed a similar degree of reduction in root growth compared with untreated seedlings in the presence of ABA. Furthermore, the cotyledon greening/expansion was more severely inhibited 35S:A-TsRAVs than in 35S:B-TsRAVs seedlings. Upon water deficiency, with a wider opening of stomata, 35S:A-TsRAVs plants experienced a faster

  13. M2 macrophages exhibit higher sensitivity to oxLDL-induced lipotoxicity than other monocyte/macrophage subtypes

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    Isa Suleiman A

    2011-12-01

    Full Text Available Abstract Background In obesity, phenotypic switches occur in macrophage populations such that the predominantly M2-polarised anti-inflammatory state seen in lean individuals changes to a predominantly M1-polarised pro-inflammatory state in those who are obese. However, the mechanisms by which these phenotypic shifts occur have not yet been fully elucidated. Results The effects of oxLDL (1-40 μg/ml; 24 h on several parameters relevant to the Unfolded Protein Response (UPR-mediated lipotoxic effects of oxLDL (disruption of ER Ca2+ handling; activation of the UPR transcription factor XBP-1; upregulation of the UPR target genes BiP and CHOP; apoptosis; cell viability were investigated in human primary monocyte-derived macrophages, and also in monocyte-macrophages derived from the THP-1 monocytic cell line. A consistent pattern was observed: M2-polarised macrophages were more sensitive to the lipotoxic effects of oxLDL than either non-polarised macrophages or non-differentiated monocytic cells. Specifically, M2-polarised macrophages were the only cell type to undergo significantly increased apoptosis (Primary cells: 1.23 ± 0.01 basal; THP-1-derived: 1.97 ± 0.12 basal; P P Conclusions We propose that the enhanced susceptibility of M2-polarised macrophages to lipotoxicity seen in the present in vitro study could, over time, contribute to the phenotypic shift seen in obese individuals in vivo. This is because a higher degree of oxLDL-induced lipotoxic cell death within M2 macrophages could contribute to a decrease in numbers of M2 cells, and thus a relative increase in proportion of non-M2 cells, within macrophage populations. Given the pro-inflammatory characteristics of a predominantly M1-polarised state, the data presented here may constitute a useful contribution to our understanding of the origin of the pro-inflammatory nature of obesity, and of the pathogenesis of obesity-associated inflammatory disorders such as Type 2 Diabetes and

  14. Immersive Exhibitions

    DEFF Research Database (Denmark)

    Achiam, Marianne

    2015-01-01

    The immersive exhibition is a specialized exhibition genre in museums, which creates the illusion of time and place by representing key characteristics of a reference world and by integrating the visitor in this three-dimensionally reconstructed world (Mortensen 2010). A successful representation...... of the reference world depends on three criteria: whether the exhibition is staged as a coherent whole with all the displayed objects supporting the representation, whether the visitor is integrated as a component of the exhibition, and whether the content and message of the exhibition become dramatized...... as a result of the visitor’s interaction with the exhibit....

  15. Human Exhibitions

    DEFF Research Database (Denmark)

    Andreassen, Rikke

    From 1870s to 1910s, more than 50 exhibitions of so-called exotic people took place in Denmark. Here large numbers of people of Asian and African origin were exhibited for the entertainment and ‘education’ of a mass audience. Several of these exhibitions took place in Copenhagen Zoo. Here differe...

  16. Functional α7β2 nicotinic acetylcholine receptors expressed in hippocampal interneurons exhibit high sensitivity to pathological level of amyloid β peptides

    Directory of Open Access Journals (Sweden)

    Liu Qiang

    2012-12-01

    Full Text Available Abstract Background β-amyloid (Aβ accumulation is described as a hallmark of Alzheimer’s disease (AD. Aβ perturbs a number of synaptic components including nicotinic acetylcholine receptors containing α7 subunits (α7-nAChRs, which are abundantly expressed in the hippocampus and found on GABAergic interneurons. We have previously demonstrated the existence of a novel, heteromeric α7β2-nAChR in basal forebrain cholinergic neurons that exhibits high sensitivity to acute Aβ exposure. To extend our previous work, we evaluated the expression and pharmacology of α7β2-nAChRs in hippocampal interneurons and their sensitivity to Aβ. Results GABAergic interneurons in the CA1 subregion of the hippocampus expressed functional α7β2-nAChRs, which were characterized by relatively slow whole-cell current kinetics, pharmacological sensitivity to dihydro-β-erythroidine (DHβE, a nAChR β2* subunit selective blocker, and α7 and β2 subunit interaction using immunoprecipitation assay. In addition, α7β2-nAChRs were sensitive to 1 nM oligomeric Aβ. Similar effects were observed in identified hippocampal interneurons prepared from GFP-GAD mice. Conclusion These findings suggest that Aβ modulation of cholinergic signaling in hippocampal GABAergic interneurons via α7β2-nAChRs could be an early and critical event in Aβ-induced functional abnormalities of hippocampal function, which may be relevant to learning and memory deficits in AD.

  17. Exhibit Engineering

    DEFF Research Database (Denmark)

    Mortensen, Marianne Foss

    ) a synthesis of the findings from the first two studies with findings from the literature to generate two types of results: a coherent series of suggestions for a design iteration of the studied exhibit as well as a more general normative model for exhibit engineering. Finally, another perspective...

  18. Pentiptycene-Based Luminescent Cu (II) MOF Exhibiting Selective Gas Adsorption and Unprecedentedly High-Sensitivity Detection of Nitroaromatic Compounds (NACs)

    Science.gov (United States)

    Zhang, Minghui; Zhang, Liangliang; Xiao, Zhenyu; Zhang, Qinhui; Wang, Rongming; Dai, Fangna; Sun, Daofeng

    2016-02-01

    The assembly of a fluorescent pentiptycene-based ligand with copper ion resulted in the formation of a 3D porous metal-organic framework (UPC-21) based on well-known paddlewheel SBUs. UPC-21 exhibits selective adsorption of CO2 over CH4 and N2 at 273 K and 295 K, C2H2 over CH4 at 273 K. The most significant performance of UPC-21 is its highly efficient detection of NACs such as 4-NP, 1,4-DNB, NB, and 1,3-DNB with the calculated quenching constants, Ksv, being 3.097 × 106, 1.406 × 106, 4.420 × 105, and 1.498 × 105 M-1 for 4-NP, 1,4-DNB, NB, 1,3-DNB, respectively, which keeps a record on the fluorescence detection of NACs. This is the first porous Cu(II) MOF that exhibits fluorescent detection of NACs with high sensitivities.

  19. Exhibiting design

    DEFF Research Database (Denmark)

    Christensen, Line Hjorth

    2017-01-01

    This article explores how co-curatorial strategies and partnerships can work as driving forces for representing design, and how they can vitalize the exhibition as a media between enlightenment and experience. Focusing on Design Museum DK, drawing on historical as well as recent cases, it identif......This article explores how co-curatorial strategies and partnerships can work as driving forces for representing design, and how they can vitalize the exhibition as a media between enlightenment and experience. Focusing on Design Museum DK, drawing on historical as well as recent cases...

  20. Museum Exhibit

    Science.gov (United States)

    1991-01-01

    A TSP from NASA Tech Briefs provided the solution to an electrical problem at a Florida museum. When a model train would not start without a jerk, a Marshall Space Flight Center development called pulse width control was adapted. The new circuit enables the train to start smoothly and reduces construction and maintenance costs. The same technology is also used in another hands-on exhibit. Applications of other TSPs are anticipated.

  1. Human Exhibitions

    DEFF Research Database (Denmark)

    Andreassen, Rikke

    of displayed people, connecting the attitudes and science of the past with both our (continued) modern fascination with ‘the exotic’, and contemporary language and popular culture. As such, it will be of interest to scholars of sociology, anthropology and history working in the areas of gender and sexuality...... light on the staging of exhibitions, the daily life of the exhibitees, the wider connections between shows across Europe and the thinking of the time on matters of race, science, gender and sexuality. A window onto contemporary racial understandings, the book presents interviews with the descendants...

  2. Human Exhibitions

    DEFF Research Database (Denmark)

    Andreassen, Rikke

    , this book draws on unique archival material, including photographs, documentary evidence and newspaper articles, newly discovered in Copenhagen. This opens for new insights and perspectives on these European exhibitions. The book employs post-colonial and feminist approaches to the material to shed fresh...... of displayed people, connecting the attitudes and science of the past with both our (continued) modern fascination with ‘the exotic’, and contemporary language and popular culture. As such, it will be of interest to scholars of sociology, anthropology and history working in the areas of gender and sexuality...

  3. Ostα−/− mice exhibit altered expression of intestinal lipid absorption genes, resistance to age-related weight gain, and modestly improved insulin sensitivity

    Science.gov (United States)

    Wheeler, Sadie G.; Hammond, Christine L.; Jornayvaz, François R.; Samuel, Varman T.; Shulman, Gerald I.; Soroka, Carol J.; Boyer, James L.; Ballatori, Nazzareno

    2013-01-01

    The organic solute transporter OSTα-OSTβ is a key transporter for the efflux of bile acids across the basolateral membrane of ileocytes and the subsequent return of bile acids to the liver. Ostα−/− mice exhibit reduced bile acid pools and impaired lipid absorption. In this study, wild-type and Ostα−/− mice were characterized at 5 and 12 mo of age. Ostα−/− mice were resistant to age-related weight gain, body fat accumulation, and liver and muscle lipid accumulation, and male Ostα−/− mice lived slightly longer than wild-type mice. Caloric intake and activity levels were similar for Ostα−/− and wild-type male mice. Fecal lipid excretion was increased in Ostα−/− mice, indicating that a defect in lipid absorption contributes to decreased fat accumulation. Analysis of genes involved in intestinal lipid absorption revealed changes consistent with decreased dietary lipid absorption in Ostα−/− animals. Hepatic expression of cholesterol synthetic genes was upregulated in Ostα−/− mice, showing that increased cholesterol synthesis partially compensated for reduced dietary cholesterol absorption. Glucose tolerance was improved in male Ostα−/− mice, and insulin sensitivity was improved in male and female Ostα−/− mice. Akt phosphorylation was measured in liver and muscle tissue from mice after acute administration of insulin. Insulin responses were significantly larger in male and female Ostα−/− than wild-type mice. These findings indicate that loss of OSTα-OSTβ protects against age-related weight gain and insulin resistance. PMID:24381083

  4. Excellence in photography: heightening dentist-ceramist communication.

    Science.gov (United States)

    Griffin, Jack D

    2009-07-01

    The goal of the dentist is to share accurate color and other tooth characteristics about the tooth being matched. The doctor must also communicate what preparation (stump) shades the ceramist is tasked with covering since this may influence the final outer porcelain color, depending on the restorative material selected. The higher the quality of the data that we share with our dental technicians, the greater chance they have to provide us with a final restoration that matches what we and the patient sees. Dental technicians are at a great disadvantage since they are usually not able to actually see the patient. Therefore, quality digital photo images can fill that important missing link. Precise digital images can be a tremendous asset for most dental offices and they provide a mechanism for heightened communication with the ceramist and the dental laboratory team--one of the keys to aesthetic restorative success.

  5. Vaginismus: heightened harm avoidance and pain catastrophizing cognitions.

    Science.gov (United States)

    Borg, Charmaine; Peters, Madelon L; Schultz, Willibrord Weijmar; de Jong, Peter J

    2012-02-01

    Catastrophic appraisal of experienced pain may promote hypervigilance and intense pain, while the personality trait of harm avoidance (HA) might prevent the occurrence of correcting such experiences. Women inflicted with vaginismus may enter a self-perpetuating downward spiral of increasing avoidance of (anticipated) pain. In vaginismus the anticipation of pain may give rise to catastrophic pain ideation. This may establish hypervigilance toward painful sexual stimuli, which consequently results in negative appraisal of sexual cues. This process could impair genital and sexual responding, intensify pain and trigger avoidance, which in turn may contribute to the onset and persistence of symptoms in vaginismus and to certain extent also in dyspareunia. To investigate whether women suffering from vaginismus are characterized by heightened levels of habitual pain catastrophic cognitions, together with higher levels of HA. This study consisted of three groups: a lifelong vaginismus group (N = 35, mean age = 28.4; standard deviation [SD] = 5.8), a dyspareunia group (N = 33, mean age = 26.7; SD = 6.8), and women without sexual complaints (N = 54, mean age = 26.5; SD = 6.7). HA scale of Cloninger's tridimensional personality questionnaire, and the pain catastrophizing scale. Specifically women inflicted with vaginismus showed significantly heightened levels of catastrophic pain cognitions compared with the other two groups, as well as significant enhanced HA vs. the control group, and a trend vs. the dyspareunia group. Both traits were shown to have cumulative predictive validity for the presence of vaginismus. This study focused on the personality traits of catastrophizing pain cognitions and HA in women with lifelong vaginismus. Our findings showed that indeed, women suffering from vaginismus are characterized by trait of HA interwoven with habitual pain catastrophizing cognitions. This study could help in the refinement of the current conceptualization and might shed

  6. Relaxing music counters heightened consolidation of emotional memory.

    Science.gov (United States)

    Rickard, Nikki S; Wong, Wendy Wing; Velik, Lauren

    2012-02-01

    Emotional events tend to be retained more strongly than other everyday occurrences, a phenomenon partially regulated by the neuromodulatory effects of arousal. Two experiments demonstrated the use of relaxing music as a means of reducing arousal levels, thereby challenging heightened long-term recall of an emotional story. In Experiment 1, participants (N=84) viewed a slideshow, during which they listened to either an emotional or neutral narration, and were exposed to relaxing or no music. Retention was tested 1 week later via a forced choice recognition test. Retention for both the emotional content (Phase 2 of the story) and material presented immediately after the emotional content (Phase 3) was enhanced, when compared with retention for the neutral story. Relaxing music prevented the enhancement for material presented after the emotional content (Phase 3). Experiment 2 (N=159) provided further support to the neuromodulatory effect of music by post-event presentation of both relaxing music and non-relaxing auditory stimuli (arousing music/background sound). Free recall of the story was assessed immediately afterwards and 1 week later. Relaxing music significantly reduced recall of the emotional story (Phase 2). The findings provide further insight into the capacity of relaxing music to attenuate the strength of emotional memory, offering support for the therapeutic use of music for such purposes. Copyright © 2011 Elsevier Inc. All rights reserved.

  7. Validated questionnaires heighten detection of difficult asthma comorbidities.

    Science.gov (United States)

    Radhakrishna, Naghmeh; Tay, Tunn Ren; Hore-Lacy, Fiona; Stirling, Robert; Hoy, Ryan; Dabscheck, Eli; Hew, Mark

    2017-04-01

    Multiple extra-pulmonary comorbidities contribute to difficult asthma, but their diagnosis can be challenging and time consuming. Previous data on comorbidity detection have focused on clinical assessment, which may miss certain conditions. We aimed to locate relevant validated screening questionnaires to identify extra-pulmonary comorbidities that contribute to difficult asthma, and evaluate their performance during a difficult asthma evaluation. MEDLINE was searched to identify key extra-pulmonary comorbidities that contribute to difficult asthma. Screening questionnaires were chosen based on ease of use, presence of a cut-off score, and adequate validation to help systematically identify comorbidities. In a consecutive series of 86 patients referred for systematic evaluation of difficult asthma, questionnaires were administered prior to clinical consultation. Six difficult asthma comorbidities and corresponding screening questionnaires were found: sinonasal disease (allergic rhinitis and chronic rhinosinusitis), vocal cord dysfunction, dysfunctional breathing, obstructive sleep apnea, anxiety and depression, and gastro-oesophageal reflux disease. When the questionnaires were added to the referring clinician's impression, the detection of all six comorbidities was significantly enhanced. The average time for questionnaire administration was approximately 40 minutes. The use of validated screening questionnaires heightens detection of comorbidities in difficult asthma. The availability of data from a battery of questionnaires prior to consultation can save time and allow clinicians to systematically assess difficult asthma patients and to focus on areas of particular concern. Such an approach would ensure that all contributing comorbidities have been addressed before significant treatment escalation is considered.

  8. Lung tumors with distinct p53 mutations respond similarly to p53 targeted therapy but exhibit genotype-specific statin sensitivity

    Science.gov (United States)

    Turrell, Frances K.; Kerr, Emma M.; Gao, Meiling; Thorpe, Hannah; Doherty, Gary J.; Cridge, Jake; Shorthouse, David; Speed, Alyson; Samarajiwa, Shamith; Hall, Benjamin A.; Griffiths, Meryl; Martins, Carla P.

    2017-01-01

    Lung adenocarcinoma accounts for ∼40% of lung cancers, the leading cause of cancer-related death worldwide, and current therapies provide only limited survival benefit. Approximately half of lung adenocarcinomas harbor mutations in TP53 (p53), making these mutants appealing targets for lung cancer therapy. As mutant p53 remains untargetable, mutant p53-dependent phenotypes represent alternative targeting opportunities, but the prevalence and therapeutic relevance of such effects (gain of function and dominant-negative activity) in lung adenocarcinoma are unclear. Through transcriptional and functional analysis of murine KrasG12D-p53null, -p53R172H (conformational), and -p53R270H (contact) mutant lung tumors, we identified genotype-independent and genotype-dependent therapeutic sensitivities. Unexpectedly, we found that wild-type p53 exerts a dominant tumor-suppressive effect on mutant tumors, as all genotypes were similarly sensitive to its restoration in vivo. These data show that the potential of p53 targeted therapies is comparable across all p53-deficient genotypes and may explain the high incidence of p53 loss of heterozygosity in mutant tumors. In contrast, mutant p53 gain of function and their associated vulnerabilities can vary according to mutation type. Notably, we identified a p53R270H-specific sensitivity to simvastatin in lung tumors, and the transcriptional signature that underlies this sensitivity was also present in human lung tumors, indicating that this therapeutic approach may be clinically relevant. PMID:28790158

  9. Lung tumors with distinct p53 mutations respond similarly to p53 targeted therapy but exhibit genotype-specific statin sensitivity.

    Science.gov (United States)

    Turrell, Frances K; Kerr, Emma M; Gao, Meiling; Thorpe, Hannah; Doherty, Gary J; Cridge, Jake; Shorthouse, David; Speed, Alyson; Samarajiwa, Shamith; Hall, Benjamin A; Griffiths, Meryl; Martins, Carla P

    2017-08-08

    Lung adenocarcinoma accounts for ∼40% of lung cancers, the leading cause of cancer-related death worldwide, and current therapies provide only limited survival benefit. Approximately half of lung adenocarcinomas harbor mutations in TP53 (p53), making these mutants appealing targets for lung cancer therapy. As mutant p53 remains untargetable, mutant p53-dependent phenotypes represent alternative targeting opportunities, but the prevalence and therapeutic relevance of such effects (gain of function and dominant-negative activity) in lung adenocarcinoma are unclear. Through transcriptional and functional analysis of murine Kras(G12D) -p53(null) , -p53(R172H) (conformational), and -p53(R270H) (contact) mutant lung tumors, we identified genotype-independent and genotype-dependent therapeutic sensitivities. Unexpectedly, we found that wild-type p53 exerts a dominant tumor-suppressive effect on mutant tumors, as all genotypes were similarly sensitive to its restoration in vivo. These data show that the potential of p53 targeted therapies is comparable across all p53-deficient genotypes and may explain the high incidence of p53 loss of heterozygosity in mutant tumors. In contrast, mutant p53 gain of function and their associated vulnerabilities can vary according to mutation type. Notably, we identified a p53(R270H) -specific sensitivity to simvastatin in lung tumors, and the transcriptional signature that underlies this sensitivity was also present in human lung tumors, indicating that this therapeutic approach may be clinically relevant. © 2017 Turrell et al.; Published by Cold Spring Harbor Laboratory Press.

  10. An immuno-wall microdevice exhibits rapid and sensitive detection of IDH1-R132H mutation specific to grade II and III gliomas.

    Science.gov (United States)

    Yamamichi, Akane; Kasama, Toshihiro; Ohka, Fumiharu; Suzuki, Hiromichi; Kato, Akira; Motomura, Kazuya; Hirano, Masaki; Ranjit, Melissa; Chalise, Lushun; Kurimoto, Michihiro; Kondo, Goro; Aoki, Kosuke; Kaji, Noritada; Tokeshi, Manabu; Matsubara, Toshio; Senga, Takeshi; Kaneko, Mika K; Suzuki, Hidenori; Hara, Masahito; Wakabayashi, Toshihiko; Baba, Yoshinobu; Kato, Yukinari; Natsume, Atsushi

    2016-01-01

    World Health Organization grade II and III gliomas most frequently occur in the central nervous system (CNS) in adults. Gliomas are not circumscribed; tumor edges are irregular and consist of tumor cells, normal brain tissue, and hyperplastic reactive glial cells. Therefore, the tumors are not fully resectable, resulting in recurrence, malignant progression, and eventual death. Approximately 69-80% of grade II and III gliomas harbor mutations in the isocitrate dehydrogenase 1 gene (IDH1), of which 83-90% are found to be the IDH1-R132H mutation. Detection of the IDH1-R132H mutation should help in the differential diagnosis of grade II and III gliomas from other types of CNS tumors and help determine the boundary between the tumor and normal brain tissue. In this study, we established a highly sensitive antibody-based device, referred to as the immuno-wall, to detect the IDH1-R132H mutation in gliomas. The immuno-wall causes an immunoreaction in microchannels fabricated using a photo-polymerizing polymer. This microdevice enables the analysis of the IDH1 status with a small sample within 15 min with substantially high sensitivity. Our results suggested that 10% content of the IDH1-R132H mutation in a sample of 0.33 μl volume, with 500 ng protein, or from 500 cells is theoretically sufficient for the analysis. The immuno-wall device will enable the rapid and highly sensitive detection of the IDH1-R132H mutation in routine clinical practice.

  11. ALDH+ tumor-initiating cells exhibiting gain in NOTCH1 gene copy number have enhanced regrowth sensitivity to a γ-secretase inhibitor and irinotecan in colorectal cancer.

    Science.gov (United States)

    Arcaroli, John J; Powell, Rebecca W; Varella-Garcia, Marileila; McManus, Martine; Tan, Aik Choon; Quackenbush, Kevin S; Pitts, Todd M; Gao, Dexiang; Spreafico, Anna; Dasari, Arvind; Touban, Basel M; Messersmith, Wells A

    2012-06-01

    The Notch signaling pathway has been shown to be upregulated in colorectal cancer (CRC) and important for the self-renewal of cancer stem cells. In this study, we evaluated the efficacy of PF-03084014, a γ-secretase inhibitor, in combination with irinotecan to identify the effects of treatment on tumor recurrence and the tumor-initiating population in our CRC preclinical explant model. The combination of PF-03084014 and irinotecan had the greatest effect at reducing tumor growth on four CRC tumors when compared with treatment with PF-03084014 or irinotecan alone. The combination significantly reduced tumor recurrence in two CRC explants (CRC001 and CRC036) after treatment was discontinued. Both of these tumors exhibited elevated baseline levels of Notch pathway activation as well as an increase in NOTCH1 gene copy number when compared with the two CRC explants (CRC026 and CRC027) where tumors reappeared quickly after termination of treatment. Isolation and injection of aldehyde dehydrogenase (ALDH(+) and ALDH(-)) cells in an in vivo explant model demonstrated that the ALDH(+) cell population were tumorigenic. Evaluation of the ALDH(+) cells after 28 days of treatment showed that the combination reduced the ALDH(+) population in the tumors that did not regrow. Furthermore, ALDH(+) cells from CRC001 and CRC027 were injected in vivo and treated immediately for 28 days. Two months after treatment, tumors were evident in the combination treatment group for CRC027 but not for CRC036. These results indicate the combination of PF-03084014 and irinotecan may be effective in reducing tumor recurrence in CRC patients whose tumors exhibit elevated levels of the Notch pathway. Copyright © 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

  12. Plasmodium falciparum isolates from southern Ghana exhibit polymorphisms in the SERCA-type PfATPase6 though sensitive to artesunate in vitro.

    Science.gov (United States)

    Kwansa-Bentum, Bethel; Ayi, Irene; Suzuki, Takashi; Otchere, Joseph; Kumagai, Takashi; Anyan, William K; Osei, Joseph H N; Asahi, Hiroko; Ofori, Michael F; Akao, Nobuaki; Wilson, Michael D; Boakye, Daniel A; Ohta, Nobuo

    2011-07-11

    In 2005, Ghana replaced chloroquine with artemisinin-based combination therapy as the first-line treatment for uncomplicated malaria. The aim of this work was to determine for the first time, polymorphisms in the putative pfATPase6 and pftctp, pfmdr1, pfcrt genes in Ghanaian isolates, particularly at a time when there is no report on artemisinin resistance in malaria parasites from Ghana. The sensitivity of parasite isolates to anti-malaria drugs were also evaluated for a possible association with polymorphisms in these genes. The prevalence of point mutations in the above Plasmodium falciparum genes were assessed from filter-paper blood blot samples by DNA sequencing. In vitro drug sensitivity test was carried out on some of the blood samples from volunteers visiting hospitals/clinics in southern Ghana using a modified version of the standard WHO Mark III micro-test. All successfully tested parasite isolates were sensitive to artesunate; while 19.4%, 29.0% and 51.6% were resistant to quinine, amodiaquine and chloroquine respectively. The geometric mean of IC50 value for artesunate was 0.73 nM (95% CI, 0.38-1.08), amodiaquine 30.69 nM (95% CI, 14.18-47.20) and chloroquine 58.73 nM (95% CI, 38.08-79.38). Twenty point mutations were observed in pfATPase6 gene, with no L263E and S769N. All mutations found were low in frequency, except D639G which was observed in about half of the isolates but was not associated with artesunate response (p = 0.42). The pftctp gene is highly conserved as no mutation was observed, while CVIET which is chloroquine-resistant genotype at codon 72-76 of the pfcrt gene was identified in about half of the isolates; this was consistent with chloroquine IC50 values (p = 0.001). Mutations were present in pfmdr1 gene but were not associated with artemisinin response (p = 1.00). The pfATPase6 gene is highly polymorphic with D639G appearing to be fixed in Ghanaian isolates. These may just be spontaneous mutations as all parasite isolates that were

  13. Plasmodium falciparum isolates from southern Ghana exhibit polymorphisms in the SERCA-type PfATPase6 though sensitive to artesunate in vitro

    Directory of Open Access Journals (Sweden)

    Ofori Michael F

    2011-07-01

    Full Text Available Abstract Background In 2005, Ghana replaced chloroquine with artemisinin-based combination therapy as the first-line treatment for uncomplicated malaria. The aim of this work was to determine for the first time, polymorphisms in the putative pfATPase6 and pftctp, pfmdr1, pfcrt genes in Ghanaian isolates, particularly at a time when there is no report on artemisinin resistance in malaria parasites from Ghana. The sensitivity of parasite isolates to anti-malaria drugs were also evaluated for a possible association with polymorphisms in these genes. Methods The prevalence of point mutations in the above Plasmodium falciparum genes were assessed from filter-paper blood blot samples by DNA sequencing. In vitro drug sensitivity test was carried out on some of the blood samples from volunteers visiting hospitals/clinics in southern Ghana using a modified version of the standard WHO Mark III micro-test. Results All successfully tested parasite isolates were sensitive to artesunate; while 19.4%, 29.0% and 51.6% were resistant to quinine, amodiaquine and chloroquine respectively. The geometric mean of IC50 value for artesunate was 0.73 nM (95% CI, 0.38-1.08, amodiaquine 30.69 nM (95% CI, 14.18-47.20 and chloroquine 58.73 nM (95% CI, 38.08-79.38. Twenty point mutations were observed in pfATPase6 gene, with no L263E and S769N. All mutations found were low in frequency, except D639G which was observed in about half of the isolates but was not associated with artesunate response (p = 0.42. The pftctp gene is highly conserved as no mutation was observed, while CVIET which is chloroquine-resistant genotype at codon 72-76 of the pfcrt gene was identified in about half of the isolates; this was consistent with chloroquine IC50 values (p = 0.001. Mutations were present in pfmdr1 gene but were not associated with artemisinin response (p = 1.00. Conclusion The pfATPase6 gene is highly polymorphic with D639G appearing to be fixed in Ghanaian isolates. These may just

  14. Heightened fire probability in Indonesia in non-drought conditions: the effect of increasing temperatures

    Science.gov (United States)

    Fernandes, Kátia; Verchot, Louis; Baethgen, Walter; Gutierrez-Velez, Victor; Pinedo-Vasquez, Miguel; Martius, Christopher

    2017-05-01

    In Indonesia, drought driven fires occur typically during the warm phase of the El Niño Southern Oscillation. This was the case of the events of 1997 and 2015 that resulted in months-long hazardous atmospheric pollution levels in Equatorial Asia and record greenhouse gas emissions. Nonetheless, anomalously active fire seasons have also been observed in non-drought years. In this work, we investigated the impact of temperature on fires and found that when the July-October (JASO) period is anomalously dry, the sensitivity of fires to temperature is modest. In contrast, under normal-to-wet conditions, fire probability increases sharply when JASO is anomalously warm. This describes a regime in which an active fire season is not limited to drought years. Greater susceptibility to fires in response to a warmer environment finds support in the high evapotranspiration rates observed in normal-to-wet and warm conditions in Indonesia. We also find that fire probability in wet JASOs would be considerably less sensitive to temperature were not for the added effect of recent positive trends. Near-term regional climate projections reveal that, despite negligible changes in precipitation, a continuing warming trend will heighten fire probability over the next few decades especially in non-drought years. Mild fire seasons currently observed in association with wet conditions and cool temperatures will become rare events in Indonesia.

  15. Rumination predicts heightened responding to stressful life events in major depressive disorder and generalized anxiety disorder.

    Science.gov (United States)

    Ruscio, Ayelet Meron; Gentes, Emily L; Jones, Jason D; Hallion, Lauren S; Coleman, Elizabeth S; Swendsen, Joel

    2015-02-01

    Although studies have documented heightened stress sensitivity in major depressive disorder (MDD) and generalized anxiety disorder (GAD), the mechanisms involved are poorly understood. One possible mechanism is the tendency to ruminate in response to stress. We used ecological momentary assessment to study ruminative thoughts after stressful events in 145 adults with MDD, GAD, comorbid MDD-GAD, or no psychopathology. Diagnosed individuals reported more event-related rumination than controls, even after adjusting for event stressfulness. Rumination was equally common in MDD and GAD and was especially severe among comorbid cases. More rumination immediately after the event predicted poorer affect, more maladaptive behavior, and more MDD and GAD symptoms at the next signal, even when pre-event levels of these variables were controlled. Rumination mediated, but did not moderate, the association of stress with affect and with symptoms. Stress-related rumination was more deleterious for diagnosed than healthy individuals, more intense for more severe clinical cases, and more persistent for cases with a greater temperamental vulnerability for emotional disorders. These results implicate rumination as a mechanism of stress sensitivity and suggest pathways through which it may maintain depression and anxiety in everyday life. (PsycINFO Database Record (c) 2015 APA, all rights reserved).

  16. Prevention of alcohol-heightened aggression by CRF-R1 antagonists in mice: critical role for DRN-PFC serotonin pathway.

    Science.gov (United States)

    Quadros, Isabel M; Hwa, Lara S; Shimamoto, Akiko; Carlson, Julia; DeBold, Joseph F; Miczek, Klaus A

    2014-11-01

    Alcohol can escalate aggressive behavior in a significant subgroup of rodents, humans, and nonhuman primates. The present study investigated whether blockade of corticotropin-releasing factor receptor type 1 (CRF-R1) could prevent the emergence of alcohol-heightened aggression in mice. The serotonin (5-HT) pathway from the dorsal raphe nucleus (DRN) to the medial prefrontal cortex (mPFC) by CRF-R1 was investigated as a possible target for the prevention of alcohol-heightened aggressive behavior. Male CFW mice that reliably exhibited aggressive behaviors after consuming 1 g/kg of alcohol received systemic or intra-DRN administration of CRF-R1 antagonists, CP-154,526 or MTIP, before a confrontation with a male conspecific. Blockade of DRN CRF-R1 receptors with both antagonists significantly reduced only alcohol-heightened aggression, whereas systemic administration reduced both alcohol-heightened and species-typical aggression. Next, a 5-HT1A agonist, 8-OH-DPAT, was coadministered with CP-154,526 into the DRN to temporarily disrupt 5-HT activity. This manipulation abolished the antiaggressive effects of intra-DRN CP-154,526. In the mPFC, in vivo microdialysis revealed that extracellular 5-HT levels were increased in mice that consumed alcohol and were then injected with CP-154,526, both systemically or intra-DRN. Neither alcohol nor CP-154,526 alone affected 5-HT release in the mPFC. The present results suggest the DRN as a critical site for CRF-R1 to modulate alcohol-heightened aggression via action on the serotonergic DRN-PFC pathway.

  17. Mobile assessment of heightened skin conductance in posttraumatic stress disorder.

    Science.gov (United States)

    Hinrichs, Rebecca; Michopoulos, Vasiliki; Winters, Sterling; Rothbaum, Alex O; Rothbaum, Barbara O; Ressler, Kerry J; Jovanovic, Tanja

    2017-06-01

    Increased psychophysiological reactivity is a hallmark intermediate phenotype of posttraumatic stress disorder (PTSD). Individuals with PTSD exhibit greater skin conductance (SC) responses to trauma scripts than trauma survivors without PTSD. However, trauma scripts require time for development and cannot be easily used in a single visit. Thus, there is a need for a low-cost, easy-to-use, SC recording protocol for PTSD assessment. Using a mobile device (eSense) connected to a portable tablet computer, we assessed SC reactivity to a standard trauma interview (STI) in 63 participants recruited from Grady Memorial Hospital in Atlanta, GA, approximately 1 year after trauma exposure. SC response (SCR) was calculated by subtracting the SC level (SCL) at the end of the baseline recording from the maximum SCL during the STI. SCL was significantly higher during the STI compared to baseline (P < .001), and individuals with PTSD showed significantly greater SCR than individuals without PTSD (P = .006). Logistic regression using SCR with PTSD diagnosis as the outcome showed an odds ratio of 1.76 (95% CI: 1.11-2.78). Lastly, higher SCR during the STI was also significantly associated with PTSD symptom total score controlling for demographics and trauma severity (b = 0.42, P = .001). The current study demonstrated feasibility of the use of a mobile device for assessing psychophysiological reactivity in those with PTSD. The use of this low-cost, easy-to-use mobile device to collect objective physiological data in concert with a STI can be easily disseminated in clinical and research settings. © 2017 Wiley Periodicals, Inc.

  18. Does heightening risk appraisals change people's intentions and behavior? A meta-analysis of experimental studies.

    Science.gov (United States)

    Sheeran, Paschal; Harris, Peter R; Epton, Tracy

    2014-03-01

    Several theories construe risk appraisals as key determinants of decisions and actions, and this idea has been supported in correlational studies. However, correlational data cannot answer the question, "Does heightening risk appraisals change people's intentions and behavior?" The present review meta-analyzed experimental evidence in order to address this issue. We identified 4 elements of risk appraisal-risk perception, anticipatory emotion, anticipated emotion, and perceived severity-and located experiments that (a) engendered a statistically significant increase in risk appraisal among treatment compared to control participants and (b) measured subsequent intention or behavior. Heightening risk appraisals had effects of d+ = .31 (k = 217) and d+ = .23 (k = 93) on intention and behavior, respectively. There was evidence that the elements of risk appraisal combined to influence outcomes. For instance, heightening risk perceptions had larger effects on outcomes when anticipatory emotions or perceived severity was also increased. Crucially, risk appraisal effects were augmented by coping appraisals: Risk appraisals had larger effects on outcomes when response efficacy and self-efficacy were enhanced or when response costs were reduced. The largest effect sizes were observed when risk appraisals, response efficacy, and self-efficacy were simultaneously heightened (d+ = .98 and .45, for intention and behavior, respectively). These findings indicate that heightening risk appraisals changes intentions and behavior. However, the direct effects of risk appraisals were generally small. Exploiting synergies among the elements of risk appraisal, and between risk appraisals and coping appraisals, should make for more effective behavior change interventions.

  19. Britain exhibition at CERN

    CERN Document Server

    Bertin; CERN PhotoLab

    1969-01-01

    The United Kingdom inaugurated the Industrial Exhibitions in 1968, and it wasn't till 1971 that other countries staged exhibitions at CERN. This photo was taken in 1969, at the second British exhibition, where 16 companies were present.

  20. Maternal Verbal Responses to Communication of Infants at Low and Heightened Risk of Autism

    Science.gov (United States)

    Leezenbaum, Nina B.; Campbell, Susan B.; Butler, Derrecka; Iverson, Jana M.

    2014-01-01

    This study investigates mothers' responses to infant communication among infants at heightened genetic risk (high risk) of autism spectrum disorder compared to infants with no such risk (low risk). A total of 26 infants, 12 of whom had an older sibling with autism spectrum disorder, were observed during naturalistic in-home interaction and…

  1. Sickle cell mice exhibit mechanical allodynia and enhanced responsiveness in light touch cutaneous mechanoreceptors

    Directory of Open Access Journals (Sweden)

    Garrison Sheldon R

    2012-09-01

    Full Text Available Abstract Background Sickle cell disease (SCD is associated with both acute vaso-occlusive painful events as well as chronic pain syndromes, including heightened sensitivity to touch. We have previously shown that mice with severe SCD (HbSS mice; express 100% human sickle hemoglobin in red blood cells; RBCs have sensitized nociceptors, which contribute to increased mechanical sensitivity. Yet, the hypersensitivity in these neural populations alone may not fully explain the mechanical allodynia phenotype in mouse and humans. Findings Using the Light Touch Behavioral Assay, we found HbSS mice exhibited increased responses to repeated application of both innocuous punctate and dynamic force compared to control HbAA mice (100% normal human hemoglobin. HbSS mice exhibited a 2-fold increase in percent response to a 0.7mN von Frey monofilament when compared to control HbAA mice. Moreover, HbSS mice exhibited a 1.7-fold increase in percent response to the dynamic light touch “puffed” cotton swab stimulus. We further investigated the mechanisms that drive this behavioral phenotype by focusing on the cutaneous sensory neurons that primarily transduce innocuous, light touch. Low threshold cutaneous afferents from HbSS mice exhibited sensitization to mechanical stimuli that manifested as an increase in the number of evoked action potentials to suprathreshold force. Rapidly adapting (RA Aβ and Aδ D-hair fibers showed the greatest sensitization, each with a 75% increase in suprathreshold firing compared to controls. Slowly adapting (SA Aβ afferents had a 25% increase in suprathreshold firing compared to HbAA controls. Conclusions These novel findings demonstrate mice with severe SCD exhibit mechanical allodynia to both punctate and dynamic light touch and suggest that this behavioral phenotype may be mediated in part by the sensitization of light touch cutaneous afferent fibers to suprathreshold force. These findings indicate that Aβ fibers can be

  2. Digital collections and exhibits

    CERN Document Server

    Denzer, Juan

    2015-01-01

    Today's libraries are taking advantage of cutting-edge technologies such as flat panel displays using touch, sound, and hands-free motions to design amazing exhibits using everything from simple computer hardware to advanced technologies such as the Microsoft Kinect. Libraries of all types are striving to add new interactive experiences for their patrons through exciting digital exhibits, both online and off. Digital Collections and Exhibits takes away the mystery of designing stunning digital exhibits to spotlight library trea

  3. Ethics on Exhibit

    Science.gov (United States)

    Vick, Randy M.

    2011-01-01

    This article discusses ethical questions raised by an exhibition of work by an artist with a history of mental illness and the exhibition's relevance to art therapy and “outsider art” discourse on the subject. Considerations for how such an exhibit could be handled had the circumstances included an art therapist and art therapy client are…

  4. A Constitutively Mannose-Sensitive Agglutinating Salmonella enterica subsp. enterica Serovar Typhimurium Strain, Carrying a Transposon in the Fimbrial Usher Gene stbC, Exhibits Multidrug Resistance and Flagellated Phenotypes

    Directory of Open Access Journals (Sweden)

    Kuan-Hsun Wu

    2012-01-01

    Full Text Available Static broth culture favors Salmonella enterica subsp. enterica serovar Typhimurium to produce type 1 fimbriae, while solid agar inhibits its expression. A transposon inserted in stbC, which would encode an usher for Stb fimbriae of a non-flagellar Salmonella enterica subsp. enterica serovar Typhimurium LB5010 strain, conferred it to agglutinate yeast cells on both cultures. RT-PCR revealed that the expression of the fimbrial subunit gene fimA, and fimZ, a regulatory gene of fimA, were both increased in the stbC mutant when grown on LB agar; fimW, a repressor gene of fimA, exhibited lower expression. Flagella were observed in the stbC mutant and this phenotype was correlated with the motile phenotype. Microarray data and RT-PCR indicated that the expression of three genes, motA, motB, and cheM, was enhanced in the stbC mutant. The stbC mutant was resistant to several antibiotics, consistent with the finding that expression of yhcQ and ramA was enhanced. A complementation test revealed that transforming a recombinant plasmid possessing the stbC restored the mannose-sensitive agglutination phenotype to the stbC mutant much as that in the parental Salmonella enterica subsp. enterica serovar Typhimurium LB5010 strain, indicating the possibility of an interplay of different fimbrial systems in coordinating their expression.

  5. Visitors Center Exhibits

    Science.gov (United States)

    1997-01-01

    A child enjoys building his own LEGO model at a play table which was included in the exhibit 'Travel in Space' World Show. The exhibit consisted of 21 displays designed to teach children about flight and space travel from the Wright brothers to future generations of space vehicles.

  6. Sonnesgade 11 - Exhibition

    DEFF Research Database (Denmark)

    Carbone, Claudia; Toft, Anne Elisabeth

    2013-01-01

    This exhibition consists of site specific installations; a collection of work by students from Studio Constructing an Archive at the Aarhus School of Architecture, and SLETH Architects. The exhibition showcases the culmination of a common project which began in February 2013. The project has been...

  7. Exhibition in Sight

    Science.gov (United States)

    Wasserman, Burton

    1977-01-01

    The traveling exhibition titled "The Wild Beasts: Fauvism and its Affinities" opened first at the Museum of Modern Art in New York City and was then moved to the San Francisco Museum of Modern Art in 1976. Discusses the exhibition's historic value, how Fauvism passed through three fairly distinct stylistic phases, and the social…

  8. Space physics exhibits underway

    Science.gov (United States)

    DeVito, M. Catherine

    AGU is planning a new space science exhibit for the Smithsonian Institution's National Air and Space Museum in Washington that will help visitors come to an understanding of space science as a comprehensive, interdisciplinary, and exciting field. The title of the exhibit is “Electric Space: Our Earth-Sun Environment.” The exhibit's five modules will include demonstrations of the effects of particle and field radiation on humans and satellites in space and on human technology on the ground. The project also includes a larger traveling version that will visit science and technology centers throughout the United States. The first exhibit is planned to open at the Air and Space Museum in late summer or early fall 1992, in time for International Space Year activities; the traveling exhibit will begin touring in early 1993.

  9. Communicating Science through Exhibitions

    Science.gov (United States)

    Dusenbery, Paul

    2005-04-01

    It is critically important for the public to better understand the scientific process. Museum exhibitions are an important part of informal science education that can effectively reach public audiences as well as school groups. They provide an important gateway for the public to learn about compelling scientific endeavors. Science exhibitions also provide a marvelous opportunity for scientists to become engaged in the exhibit development process. The Space Science Institute (SSI) is a national leader in producing traveling science exhibitions and their associated educational programming (i.e. interactive websites, educator workshops, public talks, instructional materials). The focus of this presentation will be on two of its exhibit projects: MarsQuest (on tour for four years) and Alien Earths (its tour began early in 2005). MarsQuest is enabling millions of Americans to share in the excitement of the scientific exploration of Mars and to learn more about their own planet in the process. Alien Earths will bring origins-related research and discoveries to students and the American public. It has four interrelated exhibit areas: Our Place in Space, Star Birth, Planet Quest, and Search for Life. Exhibit visitors will explore the awesome events surrounding the birth of stars and planets; they will join scientists in the hunt for planets outside our solar system including those that may be in ``habitable zones'' around other stars; and finally they will be able to learn about how scientists are looking for signs of life beyond Earth. SSI is also developing interactive web sites based on exhibit themes. New technologies are transforming the Web from a static medium to an interactive environment with tremendous potential for informal education and inquiry-based investigations. This talk will focus on the role informal science projects play in effectively communicating science to a broad, public audience.

  10. Council Chamber exhibition

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    To complete the revamp of CERN’s Council Chamber, a new exhibition is being installed just in time for the June Council meetings.   Panels will showcase highlights of CERN’s history, using some of the content prepared for the exhibitions marking 50 years of the PS, which were displayed in the main building last November. The previous photo exhibition in the Council Chamber stopped at the 1970s. To avoid the new panels becoming quickly out of date, photos are grouped together around specific infrastructures, rather than following a classic time-line. “We have put the focus on the accelerators – the world-class facilities that CERN has been offering researchers over the years, from the well-known large colliders to the lesser-known smaller facilities,” says Emma Sanders, who worked on the content. The new exhibition will be featured in a future issue of the Bulletin with photos and an interview with Fabienne Marcastel, designer of the exhibit...

  11. EXHIBITION: Accelerated Particles

    CERN Multimedia

    2004-01-01

    An exhibition of plastic arts and two evenings of performances by sound and visual artists as part of CERN's 50th anniversary celebrations. Fifty candles for CERN, an international laboratory renowned for fundamental research, is a cause for celebration. Since March this year, Geneva and neighbouring parts of France have been the venues for a wealth of small and large-scale events, which will continue until November. Given CERN's location in the commune of Meyrin, the ForuMeyrin is hosting exhibitions of plastic arts and performances entitled: Accelerated Particles. Several works will be exhibited and performed in two 'salons'. Salon des matières: An exhibition of plastic arts From Tues 12 October to Wed 3 November 2004 Tuesdays to Fridays: 16:00 to 19:00 Saturdays: 14:00 to 18:00 Exhibition open late on performance nights, entrance free Salon des particules: Musical and visual performances Tues 12 and Mon 25 October from 20:00 to 23:00 Preview evening for both events: Tues 12 October from 18:...

  12. OPRM1 genotype interacts with serotonin system dysfunction to predict alcohol-heightened aggression in primates.

    Science.gov (United States)

    Driscoll, Carlos A; Lindell, Stephen G; Schwandt, Melanie L; Suomi, Stephen J; Higley, J Dee; Heilig, Markus; Barr, Christina S

    2017-11-01

    Although the notion that alcohol promotes violence is widespread, not all individuals are aggressive while intoxicated. Genetic variation could be a contributing factor to individual differences in alcohol-heightened aggression. The present study examines the effects of OPRM1C77G genotype on responses to threat in rhesus macaques under normal conditions and following alcohol administration. Prior studies have shown that a low CSF level of 5-HIAA is a trait marker for individuals prone to escalated aggression. We wanted to examine whether the predictive value for this marker on aggression was moderated by OPRM1 genotype. Animals were administered alcohol (BAC 100-200 mg%), were provoked by a human intruder, and aggressive responses were recorded. Factor analysis was performed to generate aggressive response factors, which were then used as dependent variables for ANOVA, with OPRM1 genotype and CSF 5-HIAA as independent variables. Factor analysis generated three factors ('Threatening', 'Distance Decreasing' and 'High Intensity'). We found that High Intensity aggression was increased among carriers of the OPRM1 G allele, especially among individuals with low CSF levels of 5-HIAA. Aggression in the non-intoxicated state was predicted by 5-HIAA, but not by genotype. This study demonstrates that OPRM1 genotype predicts alcohol-heightened aggression in rhesus macaques with low CSF levels of 5-HIAA. Because OPRM1 variation predicts similar effects on alcohol response and behavior in humans and macaques, this study could suggest a role for OPRM1 genotype in alcohol-heightened aggression in humans. If so, it may be that compounds that block this receptor could reduce alcohol-associated violence in selected patient populations. © Published 2016. This article is a U.S. Government work and is in the public domain in the USA.

  13. Exhibition in Sight

    Science.gov (United States)

    Wasserman, Burton

    1978-01-01

    Ludwig Mies van der Rohe is known primarily as an architect. However, he also designed chairs and tables. Discusses an exhibit held in New York City a few months ago which showed how well the famous architect achieved his goals in the area of furniture design. (Author/RK)

  14. EXHIBITION: Accelerated Particles

    CERN Multimedia

    2004-01-01

    http://www.cern.ch/cern50/ An exhibition of plastic arts and two evenings of performances by sound and visual artists as part of CERN's fiftieth anniversary celebrations. The fiftieth anniversary of a world famous organization like CERN, an international laboratory specializing in fundamental research, is a cause for celebration. Since March this year, Geneva and neighbouring parts of France have been the venues for a wealth of small and large-scale events, which will continue until November. Given CERN's location in the commune of Meyrin, the ForuMeyrin is hosting two "salons" consisting of an exhibition of plastic arts and evenings of music and visual arts performances with the collective title of "Accelerated Particles". Several works will be exhibited and performed. Salon des matières: An exhibition of plastic arts Until Wednesday 3 November 2004. Tuesdays to Fridays: 4.00 p.m. to 7.00 p.m. Saturdays: 2.00 p.m. to 6.00 p.m. Doors open late on the evening of the performances. Salon des ...

  15. CERN permanent exhibitions

    CERN Multimedia

    2016-01-01

    Explore by yourself the issues CERN's physicists are trying to solve: given that the entire universe is made of particles, where do they come from? Why do they behave in the way they do? Discover the massive apparatus used by physicists at CERN, like the LHC, and see how each part works. And if you have more time on site, follow the LHC circuit at ground level to understand in situ this giant machine. Enter our exhibitions. Welcome!

  16. Upcycling CERN Exhibitions

    CERN Multimedia

    Katarina Anthony

    2015-01-01

    Summer is coming - and with it, a new Microcosm exhibition showcasing CERN (see here). But while the new exhibit is preparing to enchant visitors, many have been asking about the site's former content. Will it simply be out with the old and in with the new? Not as such!   The plasma ball from Microcosm is now on display at the LHCb site. As Microcosm's new content is moving in, its old content is moving up. From LHCb to IdeaSquare, former Microcosm displays and objects are being installed across the CERN site. "Microcosm featured many elements that were well suited to life outside of the exhibition," says Emma Sanders, Microcosm project leader in the EDU group. "We didn't want this popular content to go to waste, and so set out to find them new homes across CERN." The LHCb experiment has received a number of Microcosm favourites, including the Rutherford experiment, the cosmic ray display and the Thomson experiment. "We&...

  17. Online Exhibits & Concept Maps

    Science.gov (United States)

    Douma, M.

    2009-12-01

    Presenting the complexity of geosciences to the public via the Internet poses a number of challenges. For example, utilizing various - and sometimes redundant - Web 2.0 tools can quickly devour limited time. Do you tweet? Do you write press releases? Do you create an exhibit or concept map? The presentation will provide participants with a context for utilizing Web 2.0 tools by briefly highlighting methods of online scientific communication across several dimensions. It will address issues of: * breadth and depth (e.g. from narrow topics to well-rounded views), * presentation methods (e.g. from text to multimedia, from momentary to enduring), * sources and audiences (e.g. for experts or for the public, content developed by producers to that developed by users), * content display (e.g. from linear to non-linear, from instructive to entertaining), * barriers to entry (e.g. from an incumbent advantage to neophyte accessible, from amateur to professional), * cost and reach (e.g. from cheap to expensive), and * impact (e.g. the amount learned, from anonymity to brand awareness). Against this backdrop, the presentation will provide an overview of two methods of online information dissemination, exhibits and concept maps, using the WebExhibits online museum (www.webexhibits.org) and SpicyNodes information visualization tool (www.spicynodes.org) as examples, with tips on how geoscientists can use either to communicate their science. Richly interactive online exhibits can serve to engage a large audience, appeal to visitors with multiple learning styles, prompt exploration and discovery, and present a topic’s breadth and depth. WebExhibits, which was among the first online museums, delivers interactive information, virtual experiments, and hands-on activities to the public. While large, multidisciplinary exhibits on topics like “Color Vision and Art” or “Calendars Through the Ages” require teams of scholars, user interface experts, professional writers and editors

  18. A Role for Prefrontal Cortical NMDA Receptors in Murine Alcohol-Heightened Aggression.

    Science.gov (United States)

    Newman, Emily L; Terunuma, Miho; Wang, Tiffany; Hewage, Nishani; Bicakci, Matthew B; Moss, Stephen J; DeBold, Joseph F; Miczek, Klaus A

    2017-10-20

    Alcohol is associated with nearly half of all violent crimes committed in the United States; yet, a potential neural basis for this type of pathological aggression remains elusive. Alcohol may act on NMDA receptors (NMDARs) within cortical circuits to impede processing and to promote aggression. Here, male mice were characterized as alcohol-heightened (AHAs) or alcohol non-heightened aggressors (ANAs) during resident-intruder confrontations after self-administering 1.0 g/kg alcohol (6% w/v) or water. Alcohol produced a pathological-like pattern of aggression in AHAs; these mice shifted their bites to more vulnerable locations on the body of a submissive animal, including the anterior back and ventrum after consuming alcohol. In addition, through immunoblotting, we found that AHAs overexpressed the NMDAR GluN2D subunit in the prefrontal cortex (PFC) as compared to ANAs while the two phenotypes expressed similar levels of GluN1, GluN2A and GluN2B. After identifying several behavioral and molecular characteristics that distinguish AHAs from ANAs, we tested additional mice for their aggression following preferential antagonism of GluN2D-containing NMDARs. In these experiments, groups of AHAs and ANAs self-administered 1.0 g/kg alcohol (6% w/v) or water before receiving intraperitoneal (IP) doses of ketamine or memantine, or infusions of memantine directly into the prelimbic (PLmPFC) or infralimbic medial PFC (ILmPFC). Moderate doses of IP ketamine, IP memantine or intra-PLmPFC memantine increased aggression in AHAs, but only in the absence of alcohol. Prior alcohol intake blocked the pro-aggressive effects of ketamine or memantine. In contrast, only memantine, administered systemically or intra-PLmPFC, interacted with prior alcohol intake to escalate aggression in ANAs. Intra-ILmPFC memantine had no effect on aggression in either AHAs or ANAs. In sum, this work illustrates a potential role of GluN2D-containing NMDARs in the PLmPFC in alcohol-heightened aggression

  19. Smithsonian climate change exhibits

    Science.gov (United States)

    Kumar, Mohi

    2006-05-01

    Two new museum exhibits, ``Arctic: A Friend Acting Strangely'' and ``Atmosphere: Change is in the Air'' opened 15 April at the Smithsonian Institution's National Museum of Natural History in Washington, D.C., in partnership with the U.S. National Oceanic and Atmospheric Administration, NASA, and the U.S. National Science Foundation. In ``Arctic: A Friend Acting Strangely,'' anecdotes from indigenous polar people reveal how climate changes have affected life within the last 50 years. For example, as permafrost melts and sea ice shrinks, plant distributions and animal migration patterns are changing, severely affecting culture.

  20. Spontaneous initiation of communication in infants at low and heightened risk for autism spectrum disorders.

    Science.gov (United States)

    Winder, Breanna M; Wozniak, Robert H; Parladé, Meaghan V; Iverson, Jana M

    2013-10-01

    Communication spontaneously initiated by infants at heightened risk (HR; n = 15) for autism spectrum disorders (ASD) is compared with that in low-risk (LR; n = 15) infants at 13 and 18 months of age. Infants were observed longitudinally during naturalistic in-home interaction and semistructured play with caregivers. At both ages, HR infants spontaneously produced Words, Communicative Non-Word Vocalizations, show and point Gestures, and Gesture + Non-Word Vocalization combinations at lower rates than LR peers. This difference also held for Gesture + Word combinations at 18 but not 13 months. At 36 months, all HR children were evaluated for ASD, and 3 received a diagnosis of autistic disorder. At both 13 and 18 months, these 3 children had been at or near the bottom of the distribution on all spontaneous communication variables.

  1. Heightened reward learning under stress in generalized anxiety disorder: a predictor of depression resistance?

    Science.gov (United States)

    Morris, Bethany H; Rottenberg, Jonathan

    2015-02-01

    Stress-induced anhedonia is associated with depression vulnerability (Bogdan & Pizzagalli, 2006). We investigated stress-induced deficits in reward learning in a depression-vulnerable group with analogue generalized anxiety disorder (GAD, n = 34), and never-depressed healthy controls (n = 41). Utilizing a computerized signal detection task, reward learning was assessed under stressor and neutral conditions. Controls displayed intact reward learning in the neutral condition, and the expected stress-induced blunting. The GAD group as a whole also showed intact reward learning in the neutral condition. When GAD subjects were analyzed as a function of prior depression history, never-depressed GAD subjects showed heightened reward learning in the stressor condition. Better reward learning under stress among GAD subjects predicted lower depression symptoms 1 month later. Robust reward learning under stress may indicate depression resistance among anxious individuals. (PsycINFO Database Record (c) 2015 APA, all rights reserved).

  2. Reflex cardiorespiratory events from esophageal origin are heightened by preterm birth.

    Science.gov (United States)

    Nault, Stéphanie; Samson, Nathalie; Nadeau, Charlène; Djeddi, Djamal; Praud, Jean-Paul

    2017-08-01

    The involvement of gastroesophageal refluxes in cardiorespiratory events of preterm infants remains controversial. While a few studies in full-term newborn animals have shown that stimulation of esophageal receptors leads to cardiorespiratory reflexes, the latter remain largely unknown, especially after premature birth. The present study aimed to 1) characterize the cardiorespiratory reflexes originating from esophageal receptors in newborn lambs and 2) test the hypotheses that preterm birth enhances reflex cardiorespiratory inhibition and that C-fibers are involved in these reflexes. Eight full-term lambs and 10 lambs born 14 days prematurely were studied. Following surgical instrumentation, a 6-h polysomnography was performed without sedation to record electrocardiogram, respiratory movements, arterial pressure, laryngeal constrictor muscle activity, state of alertness, and hemoglobin oxygen saturation. Five esophageal stimulations of the upper and/or lower esophagus, including rapid balloon inflation and/or HCl injection, were performed in random order. A second recording was performed in full-term lambs 24 h later, after C-fiber blockade by capsaicin. Results confirmed that esophageal stimulations induced inhibitory cardiorespiratory reflexes combined with protective mechanisms, including laryngeal closure, swallowing, coughing, increased arterial pressure, and arousal. Preterm birth heightened cardiorespiratory inhibition. The strongest cardiorespiratory inhibition was observed following simultaneous stimulation of the lower and upper esophagus. Finally, cardiorespiratory inhibition was decreased after C-fiber blockade. In conclusion, esophageal stimulation induces inhibitory cardiorespiratory reflexes, which are partly mediated by C-fibers and more pronounced in preterm lambs. Clinical relevance of these findings requires further studies, especially in conditions associated with increased cardiorespiratory events, e.g., neonatal infection.NEW & NOTEWORTHY

  3. REFRACTORY HYPERTENSION: EVIDENCE OF HEIGHTENED SYMPATHETIC ACTIVITY AS A CAUSE OF ANTIHYPERTENSIVE TREATMENT FAILURE

    Science.gov (United States)

    Dudenbostel, Tanja; Acelajado, Maria C.; Pisoni, Roberto; Li, Peng; Oparil, Suzanne; Calhoun, David A.

    2015-01-01

    Refractory hypertension is an extreme phenotype of treatment failure defined as uncontrolled blood pressure (BP) in spite of ≥5 classes of antihypertensive agents, including chlorthalidone and a mineralocorticoid receptor antagonist. A prospective evaluation of possible mechanisms of refractory hypertension has not been done. The goal of this study was to test for evidence of heightened sympathetic tone as indicated by 24-hr urinary (U-) normetanephrine levels, clinic and ambulatory heart rate (HR), HR variability (HRV), arterial stiffness as indexed by pulse wave velocity (PWV), and systemic vascular resistance (SVR) compared to patients with controlled resistant hypertension. Forty-four consecutive patients, 15 with refractory and 29 with controlled resistant hypertension, were evaluated prospectively. Refractory hypertensive patients were younger (48±13.3 vs. 56.5±14.1 years, p=0.038) and more likely female (80.0 vs 51.9 %, p=0.047) compared to patients with controlled resistant hypertension. They also had higher U-normetanephrine levels (464.4±250.2 vs. 309.8±147.6 μg/24h, p=0.03), higher clinic HR (77.8±7.7 vs. 68.8±7.6 bpm, p=0.001) and 24-hr ambulatory HR (77.8±7.7 vs 68.8±7.6, p=0.0018), higher PWV (11.8±2.2 vs. 9.4±1.5 m/s, p=0.009), reduced HRV (4.48 vs. 6.11, p=0.03), and higher SVR (3795±1753 vs. 2382±349 dyne·sec·cm5·m2, p=0.008). These findings are consistent with heightened sympathetic tone being a major contributor to antihypertensive treatment failure and highlight the need for effective sympatholytic therapies in patients with refractory hypertension. PMID:25987662

  4. Long-term citalopram maintenance in mice: selective reduction of alcohol-heightened aggression.

    Science.gov (United States)

    Caldwell, Elizabeth E; Miczek, Klaus A

    2008-02-01

    Selective serotonin reuptake inhibitors (SSRIs) alleviate many affective disturbances in human clinical populations and are used in animal models to study the influence of serotonin (5-HT) on aggressive behavior and impulsivity. We hypothesized that long-term SSRI treatment may reduce aggressive behavior escalated by alcohol consumption in mice. Therefore, aggression was tested in male CFW mice to determine whether repeated citalopram (CIT) administration reduces alcohol-heightened aggression. Resident male mice self-administered alcohol by performing an operant response on a panel placed in their home cage that delivered a 6% alcohol solution. Mice repeatedly confronted an intruder 15 min after self-administration of either 1 g/kg alcohol (EtOH) or water (H(2)O). Aggressive behaviors were higher in most mice when tests occurred after EtOH intake relative to H(2)O. Once baseline aggression was established, animals were injected (i.p.) twice daily with 10 mg/kg CIT or saline (SAL) for 32 days. Every 4 days throughout the CIT treatment period, aggressive encounters occurred 6 h after CIT injections, with testing conditions alternating between EtOH and H(2)O intake. Aggression was only modestly affected by CIT in the first 2 weeks of treatment. However, by day 17 of CIT treatment, alcohol-heightened aggressive behavior was abolished, while baseline aggression remained stable. These data lend support for the role of the 5-HT transporter in the control of alcohol-related aggressive behavior, and the time course of effects suggests that a change in density of 5HT(1A) autoreceptors is necessary before antidepressant drugs produce beneficial outcomes.

  5. Leanness and heightened nonresting energy expenditure: role of skeletal muscle activity thermogenesis

    Science.gov (United States)

    Mukherjee, Sromona; Shukla, Charu; Britton, Steven L.; Koch, Lauren G.; Shi, Haifei; Novak, Colleen M.

    2014-01-01

    A high-calorie diet accompanied by low levels of physical activity (PA) accounts for the widespread prevalence of obesity today, and yet some people remain lean even in this obesogenic environment. Here, we investigate the cause for this exception. A key trait that predicts high PA in both humans and laboratory rodents is intrinsic aerobic capacity. Rats artificially selected as high-capacity runners (HCR) are lean and consistently more physically active than their low-capacity runner (LCR) counterparts; this applies to both males and females. Here, we demonstrate that HCR show heightened total energy expenditure (TEE) and hypothesize that this is due to higher nonresting energy expenditure (NREE; includes activity EE). After matching for body weight and lean mass, female HCR consistently had heightened nonresting EE, but not resting EE, compared with female LCR. Because of the dominant role of skeletal muscle in nonresting EE, we examined muscle energy use. We found that lean female HCR had higher muscle heat dissipation during activity, explaining their low economy of activity and high activity EE. This may be due to the amplified skeletal muscle expression levels of proteins involved in EE and reduced expression levels of proteins involved in energy conservation in HCR relative to LCR. This is also associated with an increased sympathetic drive to skeletal muscle in HCR compared with LCR. We find little support for the hypothesis that resting metabolic rate is correlated with maximal aerobic capacity if body size and composition are fully considered; rather, the critical factor appears to be activity thermogenesis. PMID:24398400

  6. Refractory Hypertension: Evidence of Heightened Sympathetic Activity as a Cause of Antihypertensive Treatment Failure.

    Science.gov (United States)

    Dudenbostel, Tanja; Acelajado, Maria C; Pisoni, Roberto; Li, Peng; Oparil, Suzanne; Calhoun, David A

    2015-07-01

    Refractory hypertension is an extreme phenotype of treatment failure defined as uncontrolled blood pressure in spite of ≥5 classes of antihypertensive agents, including chlorthalidone and a mineralocorticoid receptor antagonist. A prospective evaluation of possible mechanisms of refractory hypertension has not been done. The goal of this study was to test for evidence of heightened sympathetic tone as indicated by 24-hour urinary normetanephrine levels, clinic and ambulatory heart rate (HR), HR variability, arterial stiffness as indexed by pulse wave velocity, and systemic vascular resistance compared with patients with controlled resistant hypertension. Forty-four consecutive patients, 15 with refractory and 29 with controlled resistant hypertension, were evaluated prospectively. Refractory hypertensive patients were younger (48±13.3 versus 56.5±14.1 years; P=0.038) and more likely women (80.0 versus 51.9%; P=0.047) compared with patients with controlled resistant hypertension. They also had higher urinary normetanephrine levels (464.4±250.2 versus 309.8±147.6 µg per 24 hours; P=0.03), higher clinic HR (77.8±7.7 versus 68.8±7.6 bpm; P=0.001) and 24-hour ambulatory HR (77.8±7.7 versus 68.8±7.6; P=0.0018), higher pulse wave velocity (11.8±2.2 versus 9.4±1.5 m/s; P=0.009), reduced HR variability (4.48 versus 6.11; P=0.03), and higher systemic vascular resistance (3795±1753 versus 2382±349 dyne·s·cm(5)·m(2); P=0.008). These findings are consistent with heightened sympathetic tone being a major contributor to antihypertensive treatment failure and highlight the need for effective sympatholytic therapies in patients with refractory hypertension. © 2015 American Heart Association, Inc.

  7. Leanness and heightened nonresting energy expenditure: role of skeletal muscle activity thermogenesis.

    Science.gov (United States)

    Gavini, Chaitanya K; Mukherjee, Sromona; Shukla, Charu; Britton, Steven L; Koch, Lauren G; Shi, Haifei; Novak, Colleen M

    2014-03-01

    A high-calorie diet accompanied by low levels of physical activity (PA) accounts for the widespread prevalence of obesity today, and yet some people remain lean even in this obesogenic environment. Here, we investigate the cause for this exception. A key trait that predicts high PA in both humans and laboratory rodents is intrinsic aerobic capacity. Rats artificially selected as high-capacity runners (HCR) are lean and consistently more physically active than their low-capacity runner (LCR) counterparts; this applies to both males and females. Here, we demonstrate that HCR show heightened total energy expenditure (TEE) and hypothesize that this is due to higher nonresting energy expenditure (NREE; includes activity EE). After matching for body weight and lean mass, female HCR consistently had heightened nonresting EE, but not resting EE, compared with female LCR. Because of the dominant role of skeletal muscle in nonresting EE, we examined muscle energy use. We found that lean female HCR had higher muscle heat dissipation during activity, explaining their low economy of activity and high activity EE. This may be due to the amplified skeletal muscle expression levels of proteins involved in EE and reduced expression levels of proteins involved in energy conservation in HCR relative to LCR. This is also associated with an increased sympathetic drive to skeletal muscle in HCR compared with LCR. We find little support for the hypothesis that resting metabolic rate is correlated with maximal aerobic capacity if body size and composition are fully considered; rather, the critical factor appears to be activity thermogenesis.

  8. Anniversary Exhibition. Nechvolodov.

    Directory of Open Access Journals (Sweden)

    - -

    2006-03-01

    Full Text Available On the 10th of August, 2005 in Tartu (the second biggest educational and cultural city in Estonia Stanislav Nechvolodov's exhibition was opened to show the 5-year cycle of his work, traditional for the author and his admirers. At the opening ceremony Nechvolodov said that the exhibition was the last one and appointed on his 70th anniversary.The architectural and building society in Irkutsk remembers Stanislav Nechvolodov as an architect working on dwelling and civil buildings in 1960-70s. Below are some extracts from the Estonian press.«Postimees» newspaper, December 1993. The interview «Expressionistic naturalist, conservative Nechvolodov» by journalist Eric Linnumyagi. He asks about all the details and describes the troubles experienced by Nechvolodov during the perestroika period in Estonia, for example: the Tartu University refused to install the sculpture of Socrat, the art school refused to engage him as an instructor, the sculpture of Socrat moved to Vrotzlav, Poland, and Nechvolodov moved to Poland to read lectures there.«Tartu» newspaper, November 2000. Mats Oun, artist, says in the article «Nechvolodov: a man of Renaissance»: «Nechvolodov works in Estonia, his works are placed in many local and foreign museums. Regardless some insignificant faults, he deserves a high estimation, and his manysided open exhibition can be an example for other artists. He is a man of Renaissance».

  9. Poor Sleep Quality and Associated Inflammation Predict Preterm Birth: Heightened Risk among African Americans.

    Science.gov (United States)

    Blair, Lisa M; Porter, Kyle; Leblebicioglu, Binnaz; Christian, Lisa M

    2015-08-01

    Poor sleep promotes inflammation. In turn, inflammation is a causal mechanism in term as well as preterm parturition. In the United States, a persistent racial disparity in preterm birth exists, with African Americans showing ∼1.5 times greater risk. This study examined associations among sleep quality, serum proinflammatory cytokines, and length of gestation in a racially diverse sample of 138 pregnant women. Observational. Women completed the Pittsburgh Sleep Quality Index (PSQI) and other psychosocial and behavioral measures during midpregnancy. Serum levels of interleukin (IL)-6, IL-8, IL-1β, and tumor necrosis factor (TNF)-α were determined by high-sensitivity assays. Birth outcomes were determined via medical record review. Among African American women (n = 79), shorter gestation was predicted by poorer overall sleep (rs = -0.35, P = 0.002) as well the following PSQI subscales: subjective sleep quality (rs = -0.34, P = 0.002), sleep latency (rs = -0.27, P = 0.02), and sleep efficiency (rs = -0.27, P = 0.02). African American women with poor sleep quality (PSQI > 5) had 10.2 times the odds of preterm birth compared to those with good sleep quality. In contrast, among European American women (n = 53), gestational length was not significantly predicted by sleep quality (Ps > 0.12). Bootstrapping analyses showed that, among African Americans, IL-8 significantly mediated the association between sleep quality and length of gestation (indirect effect estimate -0.029; 95% confidence interval -0.06, -0.002). The data provide novel evidence that African American women exhibit greater inflammation in response to sleep disturbance than European American women and these effects correspond with length of gestation. Racial differences in susceptibility to sleep induced immune dysregulation may contribute to marked racial disparities in preterm birth. © 2015 Associated Professional Sleep Societies, LLC.

  10. Heightened Pelvic Floor Muscle Tone and Altered Contractility in Women With Provoked Vestibulodynia.

    Science.gov (United States)

    Morin, Mélanie; Binik, Yitzchak M; Bourbonnais, Daniel; Khalifé, Samir; Ouellet, Stéphane; Bergeron, Sophie

    2017-04-01

    Pelvic floor muscle (PFM) dysfunctions are reported to be involved in provoked vestibulodynia (PVD). Although heightened PFM tone has been suggested, the relative contribution of active and passive components of tone remains misunderstood. Likewise, alterations in PFM contractility have been scarcely studied. To compare PFM tone, including the relative contribution of its active and passive components, and muscular contractility in women with PVD and asymptomatic controls. Fifty-six asymptomatic women and 56 women with PVD participated in the study. The PVD diagnosis was confirmed by a gynecologist based on a standardized examination. PFM function was evaluated using a dynamometric speculum combined with surface electromyography (EMG). PFM general tone was evaluated in static conditions at different vaginal apertures and during repeated dynamic cyclic stretching. The active contribution of tone was characterized using the ratio between EMG in a static position and during stretching and the proportion of women presenting PFM activation during stretching. Contribution of the passive component was evaluated using resting forces, stiffness, and hysteresis in women sustaining a negligible EMG signal during stretching. PFM contractility, such as strength, speed of contraction, coordination, and endurance, also was assessed during voluntary isometric efforts. Greater PFM resting forces and stiffness were found in women with PVD compared with controls, indicating an increased general tone. An increased active component also was found in women with PVD because they presented a superior EMG ratio, and a larger proportion of them presented PFM activation during stretching. Higher passive properties also were found in women with PVD. Women with PVD also showed decreased strength, speed of contraction, coordination, and endurance compared with controls. Findings provide further evidence of the contribution of PFM alterations in the etiology of PVD. These alterations should be

  11. Heightened serotonin influences contest outcome and enhances expression of high-intensity aggressive behaviors.

    Science.gov (United States)

    Bubak, Andrew N; Renner, Kenneth J; Swallow, John G

    2014-02-01

    The outcome of behavioral interactions between organisms can have significant fitness implications. Therefore, it is of great theoretical and practical importance to understand the mechanisms that modify different agonistic behaviors. Changes in central monoamines, such as serotonin (5-HT), contribute to modifying the expression of aggressive encounters in both vertebrates and invertebrates. In several invertebrate groups, neural 5-HT has been linked to heightened aggression and conflict escalation. The male stalk-eyed fly (Teleopsis dalmanni) competes with conspecifics daily over access to resources such as food and mates. Because encounters escalate in a stereotypical manner, stalk-eyed flies provide an excellent model system to study behavioral syndromes. We hypothesized that noninvasive, pharmacological augmentation of brain 5-HT by administration of the precursor, 5-hydroxytryptophan (5-HTP), would increase stereotypic behavioral escalation and the probability of winning a conflict over food. Size-matched male 5-HTP-treated and untreated flies were placed in a forced-fight paradigm and their aggressive behaviors scored. Individuals with higher brain 5-HT levels had a markedly higher probability of winning the contests, displayed greater levels of high-intensity aggressive behaviors and fewer retreats. Pretreatment with 5-HTP did not significantly alter octopamine or tyramine, suggesting that central 5-HT may modulate aggression in these organisms and play a role in determining reproductive success and resource attainment. Copyright © 2013 Elsevier B.V. All rights reserved.

  12. Preliminary Evaluation of the Psychometric Quality of HEIghtenTM Quantitative Literacy

    Directory of Open Access Journals (Sweden)

    Katrina C. Roohr

    2017-07-01

    Full Text Available Quantitative literacy has been identified as an important student learning outcome (SLO by both the higher education and workforce communities. This paper aims to provide preliminary evidence of the psychometric quality of the pilot forms for HEIghten quantitative literacy, a next-generation SLO assessment for students in higher education. We evaluated the psychometric quality of the test items (e.g., item analyses, individual- and group-level reliability, the relationship with student performance and related variables (e.g., grade point average as well as student perceptions, and differences across college-related and demographic subgroups. Our study used data from a pilot test administered to over 1,500 students at 23 higher education institutions in the United States. Results showed that (a overall, items were functioning well, but a small portion of items should be dropped due to unsatisfactory performance; (b correlations across sub-areas of the assessment were very high indicating that the assessment may be unidimensional; (c reliability estimates similar to existing SLO assessments were found at both individual and group levels; (d assessment scores correlated positively with high school and college GPA, number of math college courses, self-rated quantitative literacy skills, and college admissions scores; (e students had positive perceptions about the assessment; and (f performance differences were found across institution type, college majors, gender, racial/ethnic groups, and language groups, but not across credit-hour categories. Implications for operational test development and understanding of quantitative literacy performance are discussed.

  13. Chronic Childhood Peer Rejection is Associated with Heightened Neural Responses to Social Exclusion During Adolescence.

    Science.gov (United States)

    Will, Geert-Jan; van Lier, Pol A C; Crone, Eveline A; Güroğlu, Berna

    2016-01-01

    This functional Magnetic Resonance Imaging (fMRI) study examined subjective and neural responses to social exclusion in adolescents (age 12-15) who either had a stable accepted (n = 27; 14 males) or a chronic rejected (n = 19; 12 males) status among peers from age 6 to 12. Both groups of adolescents reported similar increases in distress after being excluded in a virtual ball-tossing game (Cyberball), but adolescents with a history of chronic peer rejection showed higher activity in brain regions previously linked to the detection of, and the distress caused by, social exclusion. Specifically, compared with stably accepted adolescents, chronically rejected adolescents displayed: 1) higher activity in the dorsal anterior cingulate cortex (dACC) during social exclusion and 2) higher activity in the dACC and anterior prefrontal cortex when they were incidentally excluded in a social interaction in which they were overall included. These findings demonstrate that chronic childhood peer rejection is associated with heightened neural responses to social exclusion during adolescence, which has implications for understanding the processes through which peer rejection may lead to adverse effects on mental health over time.

  14. Negative and competitive social interactions are related to heightened proinflammatory cytokine activity.

    Science.gov (United States)

    Chiang, Jessica J; Eisenberger, Naomi I; Seeman, Teresa E; Taylor, Shelley E

    2012-02-07

    Research has consistently documented that social relationships influence physical health, a link that may implicate systemic inflammation. We examined whether daily social interactions predict levels of proinflammatory cytokines IL-6 and the soluble receptor for tumor necrosis factor-α (sTNFαRII) and their reactivity to a social stressor. One-hundred twenty-two healthy young adults completed daily diaries for 8 d that assessed positive, negative, and competitive social interactions. Participants then engaged in laboratory stress challenges, and IL-6 and sTNFαRII were collected at baseline and at 25- and 80-min poststressor, from oral mucosal transudate. Negative social interactions predicted elevated sTNFαRII at baseline, and IL-6 and sTNFαRII 25-min poststressor, as well as total output of sTNFαRII. Competitive social interactions predicted elevated baseline levels of IL-6 and sTNFαRII and total output of both cytokines. These findings suggest that daily social interactions that are negative and competitive are associated prospectively with heightened proinflammatory cytokine activity.

  15. Highly efficient iodide/triiodide dye-sensitized solar cells with gel-coated reduce graphene oxide/single-walled carbon nanotube composites as the counter electrode exhibiting an open-circuit voltage of 0.90 V.

    Science.gov (United States)

    Zheng, Huiqin; Neo, Chin Yong; Ouyang, Jianyong

    2013-07-24

    To increase the open-circuit voltage (Voc) of dye-sensitized solar cells (DSCs), it is crucial to enhance the photovoltaic efficiency of DSCs. Here, we report an effective method to significantly improve the Voc and photovoltaic efficiency of DSCs by using gel-coated composites of reduced graphene oxide (rGO) and single-walled carbon nanotubes (SWCNTs) as the counter electrode. Gel-coated rGO-SWCNT composites outperform Pt, rGO and SWCNTs in catalyzing the reduction of I3(-) and functioning as the counter electrode of DSCs. The Voc and power conversion efficiency (PCE) are 0.86 V and 8.37% for fresh DSCs with the composite of 80 wt % rGO and 20 wt % SWCNTs, significantly higher than those (Voc = 0.77 V, PCE = 7.79%) of control DSCs with Pt fabricated by pyrolysis as the counter electrode. The Voc value of DSCs with rGO-SWCNT composites as the counter electrode further increases to 0.90 V after one week. The high Voc and PCE are ascribed to the synergetic effects of rGO and SWCNTs in reducing the overpotential of the I3(-) reduction. RGO with high specific surface area can have high electrocatalytic activity, whereas SWCNTs give rise to high conductivity for the composites and facilitate the penetration of the redox species into rGO sheets by preventing the agglomeration of the rGO sheets. To the best of our knowledge, this is the first time to report iodide/triiodide DSCs with both high Voc and PCE.

  16. Neurotransmitter alterations in embryonic succinate semialdehyde dehydrogenase (SSADH deficiency suggest a heightened excitatory state during development

    Directory of Open Access Journals (Sweden)

    Snead O Carter

    2008-11-01

    Full Text Available Abstract Background SSADH (aldehyde dehydrogenase 5a1 (Aldh5a1; γ-hydroxybutyric (GHB aciduria deficiency is a defect of GABA degradation in which the neuromodulators GABA and GHB accumulate. The human phenotype is that of nonprogressive encephalopathy with prominent bilateral discoloration of the globi pallidi and variable seizures, the latter displayed prominently in Aldh5a1-/- mice with lethal convulsions. Metabolic studies in murine neural tissue have revealed elevated GABA [and its derivatives succinate semialdehyde (SSA, homocarnosine (HC, 4,5-dihydroxyhexanoic acid (DHHA and guanidinobutyrate (GB] and GHB [and its analogue D-2-hydroxyglutarate (D-2-HG] at birth. Because of early onset seizures and the neurostructural anomalies observed in patients, we examined metabolite features during Aldh5a1-/- embryo development. Methods Embryos were obtained from pregnant dams sacrificed at E (embryo day of life 10–13, 14–15, 16–17, 18–19 and newborn mice. Intact embryos were extracted and metabolites quantified by isotope dilution mass spectrometry (n = 5–15 subjects, Aldh5a1+/+ and Aldh5a1-/- for each gestational age group. Data was evaluated using the t test and one-way ANOVA with Tukey post hoc analysis. Significance was set at the 95th centile. Results GABA and DHHA were significantly elevated at all gestational ages in Aldh5a1-/- mice, while GB was increased only late in gestation; SSA was not elevated at any time point. GHB and D-2-HG increased in an approximately linear fashion with gestational age. Correlative studies in human amniotic fluid from SSADH-deficient pregnancies (n = 5 also revealed significantly increased GABA. Conclusion Our findings indicate early GABAergic alterations in Aldh5a1-/- mice, possibly exacerbated by other metabolites, which likely induce a heightened excitatory state that may predispose neural networks to epilepsy in these animals.

  17. Heightened vulnerability to MDR-TB epidemics after controlling drug-susceptible TB.

    Science.gov (United States)

    Bishai, Jason D; Bishai, William R; Bishai, David M

    2010-09-22

    Prior infection with one strain TB has been linked with diminished likelihood of re-infection by a new strain. This paper attempts to determine the role of declining prevalence of drug-susceptible TB in enabling future epidemics of MDR-TB. A computer simulation of MDR-TB epidemics was developed using an agent-based model platform programmed in NetLogo (See http://mdr.tbtools.org/). Eighty-one scenarios were created, varying levels of treatment quality, diagnostic accuracy, microbial fitness cost, and the degree of immunogenicity elicited by drug-susceptible TB. Outcome measures were the number of independent MDR-TB cases per trial and the proportion of trials resulting in MDR-TB epidemics for a 500 year period after drug therapy for TB is introduced. MDR-TB epidemics propagated more extensively after TB prevalence had fallen. At a case detection rate of 75%, improving therapeutic compliance from 50% to 75% can reduce the probability of an epidemic from 45% to 15%. Paradoxically, improving the case-detection rate from 50% to 75% when compliance with DOT is constant at 75% increases the probability of MDR-TB epidemics from 3% to 45%. The ability of MDR-TB to spread depends on the prevalence of drug-susceptible TB. Immunologic protection conferred by exposure to drug-susceptible TB can be a crucial factor that prevents MDR-TB epidemics when TB treatment is poor. Any single population that successfully reduces its burden of drug-susceptible TB will have reduced herd immunity to externally or internally introduced strains of MDR-TB and can experience heightened vulnerability to an epidemic. Since countries with good TB control may be more vulnerable, their self interest dictates greater promotion of case detection and DOTS implementation in countries with poor control to control their risk of MDR-TB.

  18. Heightened vulnerability to MDR-TB epidemics after controlling drug-susceptible TB.

    Directory of Open Access Journals (Sweden)

    Jason D Bishai

    2010-09-01

    Full Text Available Prior infection with one strain TB has been linked with diminished likelihood of re-infection by a new strain. This paper attempts to determine the role of declining prevalence of drug-susceptible TB in enabling future epidemics of MDR-TB.A computer simulation of MDR-TB epidemics was developed using an agent-based model platform programmed in NetLogo (See http://mdr.tbtools.org/. Eighty-one scenarios were created, varying levels of treatment quality, diagnostic accuracy, microbial fitness cost, and the degree of immunogenicity elicited by drug-susceptible TB. Outcome measures were the number of independent MDR-TB cases per trial and the proportion of trials resulting in MDR-TB epidemics for a 500 year period after drug therapy for TB is introduced.MDR-TB epidemics propagated more extensively after TB prevalence had fallen. At a case detection rate of 75%, improving therapeutic compliance from 50% to 75% can reduce the probability of an epidemic from 45% to 15%. Paradoxically, improving the case-detection rate from 50% to 75% when compliance with DOT is constant at 75% increases the probability of MDR-TB epidemics from 3% to 45%.The ability of MDR-TB to spread depends on the prevalence of drug-susceptible TB. Immunologic protection conferred by exposure to drug-susceptible TB can be a crucial factor that prevents MDR-TB epidemics when TB treatment is poor. Any single population that successfully reduces its burden of drug-susceptible TB will have reduced herd immunity to externally or internally introduced strains of MDR-TB and can experience heightened vulnerability to an epidemic. Since countries with good TB control may be more vulnerable, their self interest dictates greater promotion of case detection and DOTS implementation in countries with poor control to control their risk of MDR-TB.

  19. Fasting for 24 Hours Heightens Reward from Food and Food-Related Cues

    Science.gov (United States)

    Cameron, Jameason D.; Goldfield, Gary S.; Finlayson, Graham; Blundell, John E.; Doucet, Éric

    2014-01-01

    Introduction We examined the impact of a 24 hour complete fast (vs. fed state) on two measures of food reward: 1) ‘wanting’, as measured by response to food images and by the relative-reinforcing value of food (RRV), and 2) ‘liking’, as measured by response to food images and the hedonic evaluation of foods consumed. Methods Utilizing a randomized crossover design, 15 subjects (9 male; 6 female) aged 28.6±4.5 yrs with body mass index 25.3±1.4 kg/m2 were randomized and counterbalanced to normal feeding (FED) and 24-hour fast (FASTED) conditions. Trait characteristics were measured with the Three Factor Eating Questionnaire. Two computer tasks measured food reward: 1) RRV progressive ratio task, 2) explicit ‘liking’ and ‘wanting’ (Leeds Food Preference Questionnaire, LFPQ). Also measured were ad libitum energy intake (EI; buffet) and food ‘liking’ (visual analogue scale) of personalized stimuli. Results There were no significant anthropometric changes between conditions. Appetite scores, hedonic ratings of ‘liking’, and ad libitum EI all significantly increased under the FASTED condition (pFASTED condition there were significant increases in the RRV of snack foods; similarly, explicit ‘wanting’ and ‘liking’ significantly increased for all food categories. ‘Liking’ of sweet foods remained high across-meals under FASTED, but savory foods decreased in hedonic saliency. Conclusion Relative to a fed state, we observed an increase in hedonic ratings of food, the rewarding value of food, and food intake after a 24 hr fast. Alliesthesia to food and food cues is suggested by heightened hedonic ratings under the FASTED condition relative to FED. PMID:24454949

  20. Heightened inflammasome activation is linked to age-related cognitive impairment in Fischer 344 rats

    Directory of Open Access Journals (Sweden)

    Mawhinney Lana J

    2011-12-01

    Full Text Available Abstract Background Members of the mammalian nucleotide binding domain, leucine-rich repeat (LRR-containing receptor (NLR family of proteins are key modulators of innate immunity regulating inflammation. Our previous work has shown that among the members of this family, NLRP1/NALP1, present in neurons, plays a crucial role in inflammasome formation and the production of the inflammatory cytokines interleukin (IL -1β and IL-18 after various types of central nervous system injury. Results We investigated whether age-related cognitive decline may involve a heightened inflammatory response associated with activation of the NLRP1 inflammasome in the hippocampus. Young (3 months and aged (18 months male Fischer 344 rats were tested in a spatial acquisition task via Morris water maze. Following behavioral testing, hippocampal lysates were assayed for expression of NLRP1 inflammasome components and inflammatory cytokines. Hippocampal lysates from aged rats showed significantly higher levels of NLRP1 inflammasome constituents, caspase-1, caspase-11, the purinergic receptor P2X7, pannexin-1 and X-linked inhibitor of apoptosis (XIAP than lysates from younger animals. Following treatment with probenecid, an inhibitor or pannexin-1, aged animals demonstrated reduction in inflammasome activation and improvement in spatial learning performance. Conclusions Our behavioral findings are consistent with increases in IL-1β and IL-18 that have been previously shown to correlate with spatial learning deficits. Probenecid reduced activated caspase-1 and ameliorated spatial learning deficits in aged rats. Thus, aging processes stimulate activation of the NLRP1 inflammasome and secretion of IL-1β and IL-18 that may contribute to age-related cognitive decline in the growing elderly population. Moreover, probenecid may be potentially useful as a therapy to improve cognitive outcomes in the aging population.

  1. Fasting for 24 hours heightens reward from food and food-related cues.

    Science.gov (United States)

    Cameron, Jameason D; Goldfield, Gary S; Finlayson, Graham; Blundell, John E; Doucet, Eric

    2014-01-01

    We examined the impact of a 24 hour complete fast (vs. fed state) on two measures of food reward: 1) 'wanting', as measured by response to food images and by the relative-reinforcing value of food (RRV), and 2) 'liking', as measured by response to food images and the hedonic evaluation of foods consumed. Utilizing a randomized crossover design, 15 subjects (9 male; 6 female) aged 28.6±4.5 yrs with body mass index 25.3±1.4 kg/m(2) were randomized and counterbalanced to normal feeding (FED) and 24-hour fast (FASTED) conditions. Trait characteristics were measured with the Three Factor Eating Questionnaire. Two computer tasks measured food reward: 1) RRV progressive ratio task, 2) explicit 'liking' and 'wanting' (Leeds Food Preference Questionnaire, LFPQ). Also measured were ad libitum energy intake (EI; buffet) and food 'liking' (visual analogue scale) of personalized stimuli. There were no significant anthropometric changes between conditions. Appetite scores, hedonic ratings of 'liking', and ad libitum EI all significantly increased under the FASTED condition (pFASTED condition there were significant increases in the RRV of snack foods; similarly, explicit 'wanting' and 'liking' significantly increased for all food categories. 'Liking' of sweet foods remained high across-meals under FASTED, but savory foods decreased in hedonic saliency. Relative to a fed state, we observed an increase in hedonic ratings of food, the rewarding value of food, and food intake after a 24 hr fast. Alliesthesia to food and food cues is suggested by heightened hedonic ratings under the FASTED condition relative to FED.

  2. Against the Odds Exhibition Opens

    Science.gov (United States)

    ... Issue Past Issues Special Section Against the Odds Exhibition Opens Past Issues / Spring 2008 Table of Contents / ... April 17, Dr. Donald Lindberg officially opened the exhibition, "Against the Odds: Making a Difference in Global ...

  3. Exhibition

    CERN Multimedia

    Staff Association

    2014-01-01

    Energie sombre, matière noire J.-J. Dalmais - J. Maréchal Du 11 au 27 novembre 2014, CERN Meyrin, Bâtiment principal A l’image des particules atomiques qui ont tissé des liens pour créer la matière, deux artistes haut bugistes croisent leurs regards et conjuguent leurs expressions singulières pour faire naître une vision commune de l’univers, produit des forces primordiales. Les sculptures de Jean-Jacques Dalmais et les peintures de Jacki Maréchal se rencontrent pour la première fois et se racontent par un enrichissement mutuel la belle histoire de la Vie. Dialogue magique des œuvres en mouvement qui questionnent en écho l’énergie sombre et la matière noire. Cette harmonieuse confluence de jeux de miroir et de résonnance illumine de poésie et de sobriété l’espace expos&...

  4. Exhibition

    CERN Multimedia

    Staff Association

    2016-01-01

    The Elementary Particles of Painting Alfonso Fratteggiani Bianchi and Ermanno Imbergamo From September 26 to October 7, 2016 CERN Meyrin, Main Building With intentions similar to those of CERN physicists, the artist Alfonso Fratteggiani Bianchi investigates the color pigment, studying its interaction with light and with the support on which it is deposited. He creates monochrome paintings by spreading the color pigment in the pure state on stones, without using glue or any other type of adhesive. With intentions similar to artists, the physicist Ermanno Imbergamo investigates the use of luminescent wavelength shifters, materials commonly used in Particle Physics, for art. He creates other monochrome artworks, which disclose further aspects of interaction among light, color pigments and support. For more information: staff.association@cern.ch | Tel: 022 767 28 19

  5. Exhibition

    CERN Document Server

    Staff Association

    2018-01-01

    Cosmos KOLI Du 15 au 26 janvier 2018 CERN Meyrin, Main Building (Nébuleuse d'Orion- KOLI) KOLI, Artiste confirmé, diplômé de l’Académie de Beaux Arts de Tirana, depuis 26 ans en Suisse, où il a participé à maintes expositions collectives et organisé 10 expositions privées avec  beaucoup de succès, s’exprime actuellement dans un bonheur de couleur et de matières qui côtoient des hautes sphères… le cosmos ! Gagnant d’un premier prix lors d’une exposition collective organisée par le consulat Italien, il s’est installé au bord du lac dans le canton de Vaud où il vit depuis maintenant déjà 13 ans. www.kolicreation.com Pour plus d’informations et demandes d’accès : staff.association@cern.ch | T&eacut...

  6. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    La couleur des jours oriSio Du 2 au 12 mai 2017 CERN Meyrin, Bâtiment principal oriSio - Motus Suite à un fort intérêt pour la Chine et une curiosité pour un médium très ancien, la laque ! Je réinterprète cet art à travers un style abstrait. Je présente ici des laques sur aluminium, travaillés au plasma et ensuite colorés à l’aide de pigments pour l’essentiel. Mes œuvres je les veux brutes, déchirées, évanescentes, gondolées, voire trouées mais avec une belle approche de profondeur de la couleur.   Pour plus d’informations : staff.association@cern.ch | Tél: 022 766 37 38

  7. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Still Life Jérémy Bajulaz Du 25 septembre au 6 octobre 2017 CERN Meyrin, Main Building (Aubergine - Jérémy Bajulaz) Né en 1991 en Haute-Savoie, France. Diplômé de l'Ecole Emile Cohl à Lyon, Jérémy Bajulaz intègre en 2014 le programme d'artiste en résidence au Centre Genevois de Gravure Contemporaine. C'est là que son travail prendra corps, autour de la lumière et de ses vibrations aux travers de sujets comme le portrait et la nature morte, dans le souci de l'observation; le regard prenant une place importante dans le processus créatif. Lauréat 2017 du VII Premio AAAC, son travail a été présenté dans de nombreuses expositions collectives, en 2015 au Bâtiment d’Art Contemporain de Genève, en 2016 au 89e Salon de Lyon et du ...

  8. Exhibition

    CERN Multimedia

    Staff Association

    2016-01-01

    La mosaïque ou quand détruire permet de construire Lauren Decamps Du 28 novembre au 9 décembre 2016 CERN Meyrin, Bâtiment principal Paysage d'Amsterdam - Lauren Decamps On ne doit jamais rien détruire qu'on ne soit sûr de pouvoir remplacer aussi avantageusement " écrivait Plutarque dans ses Œuvres morales du 1er siècle après JC. L'artiste mosaïste Lauren Decamps adhère à cette idée et tente à sa manière de donner une nouvelle vie à ses matériaux en les taillant puis les réassemblant, créant ainsi des œuvres abstraites et figuratives.

  9. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Firmament des toiles Joëlle Lalagüe Du 6 au 16 juin 2017 CERN Meyrin, Bâtiment principal Phylaë Voyage - Joëlle Lalagüe. Each picture is an invitation for a cosmic trip. This is a whispering of soul, which comes from origins. A symphony of the world, some notes of love, a harmony for us to fly to infinity. Pour plus d’informations et demandes d'accès : staff.association@cern.ch | Tél: 022 766 37 38

  10. Exhibition

    CERN Multimedia

    Staff Association

    2016-01-01

    COLORATION Sandra Duchêne From September 5 to 16, 2016 CERN Meyrin, Main Building La recherche de l’Universel. Après tout ! C’est de l’Amour ! What else to say ? …La couleur, l’ENERGIE de la vie…

  11. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Le Point Isabelle Gailland Du 20 février au 3 mars 2017 CERN Meyrin, Bâtiment principal La Diagonale - Isabelle Gailland. Au départ, un toujours même point minuscule posé au centre de ce que la toile est un espace. Une réplique d'autres points, condensés, alignés, isolés, disséminés construiront dans leur extension, la ligne. Ces lignes, croisées, courbées, déviées, prolongées, seront la structure contenant et séparant la matière des couleurs. La rotation de chaque toile en cours d'exécution va offrir un accès illimité à la non-forme et à la forme. Le point final sera l'ouverture sur différents points de vue de ce que le point et la ligne sont devenus une représentation pour l'œil et l'im...

  12. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Harmonie Nathalie Lenoir Du 4 au 15 septembre 2017 CERN Meyrin, Bâtiment principal Peindre est un langage. Le tracé du pinceau sur le lin en est l'expression. A qui appartient un tableau en définitive ? A celui qui l'a peint ? A celui qui le regarde ? A celui qui l'emporte ? La peinture est une émotion partagée... Laissez-vous projeter de l'autre côté de la toile, prenez un moment pour rêver, en harmonie avec les éléments, parce-que la peinture parle à votre âme… Pour plus d’informations et demandes d’accès : staff.association@cern.ch | Tél : 022 766 37 38

  13. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Œuvres recentes Fabienne Wyler Du 6 au 17 février 2017 CERN Meyrin, Bâtiment principal L'escalier du diable B - aquarelle, encre de Chine XLV - Fabienne Wyler. En relation avec certains procédés d’écriture contemporaine (par ex. Webern ou certaines musiques conçues par ordinateur), les compositions picturales de Fabienne Wyler s’élaborent à partir de « modules » (groupes de quadrangles) qu’elle reproduit en leur faisant subir toutes sortes de transformations et de déplacements : étirements, renversements, rotations, effet miroir, transpositions, déphasages, superpositions, etc., et ceci à toutes les échelles. Au fil des œuvres sont apparues des séries intitulées, Bifurcations, Intermittences, Attracteurs étranges, Polyrythmies. Ces titres ont un lien &e...

  14. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Gaïa Manuella Cany Du 10 au 28 avril 2017 CERN Meyrin, Bâtiment principal Oiseau - Manuella Cany. Tableaux abstraits inspirés de vues satellites ou photos prises du ciel. Certains sont à la frontière du figuratif alors que d'autres permettent de laisser libre cours à son imagination. Aux détails infinis, ces tableaux sont faits pour être vus de loin et de près grâce à une attention toute particulière apportée aux effets de matières et aux couleurs le long de volutes tantôt nuancées tantôt contrastées.   Pour plus d’informations : staff.association@cern.ch | Tél: 022 766 37 38

  15. Exhibition

    CERN Multimedia

    Staff Association

    2014-01-01

      Parallels vision Astronomical subjects which evoke extrasensory kinetic visions Alberto Di Fabio From 8 to 10 October, CERN Meyrin, Main Building In the framework of Italy@cern, the Staff Association presents Alberto Di Fabio. Di Fabio’s work is inspired by the fundamental laws of the physical world, as well as organic elements and their interrelation. His paintings and works on paper merge the worlds of art and science, depicting natural forms and biological structures in vivid colour and imaginative detail. For all additional information: staff.association@cern.ch | Tel: 022 767 28 19

  16. Exhibition

    CERN Multimedia

    Staff Association

    2017-01-01

    Les vibrantes Patrick Robbe-Grillet Du 30 octobre au 10 novembre 2017 CERN Meyrin, Main Building Patrick Robbe-Grillet - Feux d'artifices Qui est Patrick Robbe-Grillet ? Artiste Franco-Suisse, né en 1968 à Genève. En recherche du sentiment de paix, autodidacte, après un séjour en Chine en 2000, puis au Japon en 2002, suivi d’un long questionnement, il trouve sa voie dans la peinture, élément libérateur de sa créativité et expression de sa sensibilité à fleur de peau. « La Chine m’a enseigné les courbes, les nuances. Le Japon, la ligne droite, la rigueur. » Vous avez su rendre visible l'invisible ! - commentaire de Monsieur Fawaz Gruosi Pour plus d’informations et demandes d’accès : staff.association@cern.ch | Tél : 022 766 37 38

  17. Exhibition

    CERN Multimedia

    Staff Association

    2011-01-01

    Jan Hladky, physicien de l'Institut de Physique de l'Académie des Sciences de la République tchèque, et membre de la collaboration Alice, expose ses œuvres au Bâtiment principal du 20 avril au 6 mai. Son exposition est dédiée aux victimes du séisme de Sendai. Des copies de ses œuvres seront mises en vente et les sommes récoltées seront versées au profit des victimes.

  18. [Psychosocial stressors and pain sensitivity in chronic pain disorder with somatic and psychological factors (F45.41)].

    Science.gov (United States)

    Studer, M; Stewart, J; Egloff, N; Zürcher, E; von Känel, R; Brodbeck, J; Grosse Holtforth, M

    2017-02-01

    Increased pain sensitivity is characteristic for patients with chronic pain disorder with somatic and psychological factors (F45.41). Persistent stress can induce, sustain, and intensify pain sensitivity, thereby modulating pain perception. In this context, it would be favorable to investigate which psychosocial stressors are empirically linked to pain sensitivity. The aim of this study was to examine the relationship between psychosocial stressors and pain sensitivity in a naturalistic sample of patients with chronic pain disorder with somatic and psychological factors (F45.41). We assessed 166 patients with chronic pain disorder with somatic and psychological factors (F45.41) at entry into an inpatient pain clinic. Pain sensitivity was measured with a pain provocation test (Algopeg) at the middle finger and earlobe. Stressors assessed were exposure to war experiences, adverse childhood experiences, illness-related inability to work, relationship problems, and potentially life-threatening accidents. Correlation analyses and structural equation modeling were used to examine which stressors showed the strongest prediction of pain sensitivity. Patients exhibited generally heightened pain sensitivity. Both exposure to war and illness-related inability to work showed significant bivariate correlations with pain sensitivity. In addition to age, they also predicted a further increase in pain sensitivity in the structural equation model. Bearing in mind the limitations of this cross-sectional study, these findings may contribute to a better understanding of the link between psychosocial stressors and pain sensitivity.

  19. Why harmless sensations might hurt in individuals with chronic pain: About heightened prediction and perception of pain in the mind

    Directory of Open Access Journals (Sweden)

    Tanja Hechler

    2016-10-01

    Full Text Available In individuals with chronic pain harmless bodily sensations can elicit anticipatory fear of pain resulting in maladaptive responses such as taking pain medication. Here, we aim to broaden the perspective taking into account recent evidence that suggests that interoceptive perception is largely a construction of beliefs, which are based on past experience and that are kept in check by the actual state of the body. Taking a Bayesian perspective, we propose that individuals with chronic pain display a heightened prediction of pain (prior probability p(pain, which results in heightened pain perception (posterior probability p(pain|sensation due to an assumed link between pain and a harmless bodily sensation (p(sensation│pain. This pain perception emerges because their mind infers pain as the most likely cause for the sensation. When confronted with a mismatch between predicted pain and a (harmless bodily sensation, individuals with chronic pain try to minimize the mismatch most likely by active inference of pain or by an attentional shift. The active inference results in activities that produce a stronger sensation that will match with the prediction, allowing subsequent perceptual inference of pain. Here, we depict heightened pain perception in individuals with chronic pain by reformulating and extending the assumptions of the interoceptive predictive coding model from a Bayesian perspective. The review concludes with a research agenda and clinical considerations.

  20. Phase measurements exhibiting super sensitivity and super resolution features

    DEFF Research Database (Denmark)

    Schäfermeier, Clemens; Jezek, Miroslav; Gehring, Tobias

    2016-01-01

    By using an optical squeezed state and a post-processed homodyne detection scheme we show that phase measurements can overcome Rayleigh's resolution criterion and beat the quantum shot noise limit simultaneously...

  1. The World of Virtual Exhibitions

    Directory of Open Access Journals (Sweden)

    Irena Eiselt

    2013-09-01

    Full Text Available EXTENDED ABSTRACTSpecial collections of the National and University Library (NUK hide a lot of items of precious value. The Slovenian cultural heritage is stored on paper or on other media as a part of the library’s Manuscripts, Incunabula and Rare Books Collection, Old Prints Collection, Maps and Pictorial Collection, Music Collection, Ephemera Collection, Serials Collection, and Slovenian Diaspora Publications Collection. Only a small part of the treasures is temporary revealed to the public on special exhibitions. The idea of virtual exhibitions of library treasures was born in 2005. The library aimed to exhibit precious items of special collections of high historical or artistic value. In 2008 the first two virtual exhibitions were created in-house offering access to the rich collections of old postcards of Ljubljana at the beginning of 20th century kept in the Maps and Pictorial Collection of NUK. They were soon followed by other virtual exhibitions. At the beginning they were organised in the same way as physical exhibitions, afterwards different programs were used for creation of special effects (for ex. 3D wall. About two years ago it was decided that the creation of virtual exhibitions will be simplified. Files of digitised and borndigital library materials in jpg format are imported to MS PowerPoint 2010. Each jpg file is now formatted by adding a frame, a description … to the slides which are saved as jpg files. The last step is the import of jpg files into Cooliris application used for NUK web exhibitions. In the paper the virtual exhibition design and creation, the technical point of view and criteria for the selection of exhibition content are explained following the example of the virtual exhibitions the Old Postcards of Ljubljana, Photo Ateliers in Slovenia, a collection of photographs Four Seasons by Fran Krašovec and photos of Post-Earthquake Ljubljana in 1895.

  2. Binge ethanol intoxication heightens subsequent ethanol intake in adolescent, but not adult, rats.

    Science.gov (United States)

    Fabio, María Carolina; Nizhnikov, Michael E; Spear, Norman E; Pautassi, Ricardo Marcos

    2014-04-01

    A question still to be answered is whether ethanol initiation has a greater effect on ethanol consumption if it occurs during adolescence than in adulthood. This study assessed the effect of ethanol initiation during adolescence or adulthood on voluntary ethanol consumption when animals were still within the same age range. Adolescent or adult rats were given 5, 2, or 0 ethanol exposures. The animals were tested for ethanol consumption through two-bottle choice tests, before undergoing a 1-week deprivation. A two-bottle assessment was conducted after the deprivation. Adolescents, but not adults, given two ethanol administrations during initiation exhibited significantly higher ethanol intake during the pre-deprivation period. These adolescents also exhibited a threefold increase in ethanol intake after 7 days of drug withdrawal, when compared with controls. These findings suggest that very brief experience with binge ethanol intoxication in adolescence, but not in adulthood, impacts later predisposition to drink. © 2013 Wiley Periodicals, Inc.

  3. Exhibitions: Facing Outward, Pointing Inward

    Science.gov (United States)

    McDonald, Joseph P.

    2007-01-01

    The Coalition of Essential Schools (CES) Exhibitions Project of the early 1990s produced a range of work that continues to inform the practice of using exhibitions as a "360 degree" method of transforming teaching and learning, community connections, school design, and assessment. Among that work was this paper coupling the origins of exhibitions…

  4. Does catastrophic thinking enhance oesophageal pain sensitivity?

    DEFF Research Database (Denmark)

    Martel, M O; Olesen, A E; Jørgensen, D

    2016-01-01

    study visits, mechanical, thermal, and electrical pain sensitivity in the oesophagus was assessed before and after inducing oesophageal sensitization using a 30-min intraluminal oesophageal acid perfusion procedure. RESULTS: Analyses were conducted based on data averaged across the two study visits...... that catastrophic thinking exerts an influence on oesophageal pain sensitivity, but not necessarily on the magnitude of acid-induced oesophageal sensitization. WHAT DOES THIS STUDY ADD?: Catastrophizing is associated with heightened pain sensitivity in the oesophagus. This was substantiated by assessing responses...

  5. Type 2 diabetes mellitus coincident with pulmonary tuberculosis is associated with heightened systemic type 1, type 17, and other proinflammatory cytokines.

    Science.gov (United States)

    Kumar, Nathella Pavan; Sridhar, Rathinam; Banurekha, Vaithilingam V; Jawahar, Mohideen S; Fay, Michael P; Nutman, Thomas B; Babu, Subash

    2013-10-01

    Type 2 diabetes mellitus is a major risk factor for the development of active tuberculosis, although the biological basis underlying this susceptibility remains poorly characterized. To identify the influence of coincident diabetes mellitus on cytokine levels in pulmonary tuberculosis, we examined circulating levels of a panel of cytokines and chemokines in the plasma of individuals with tuberculosis with diabetes and compared them with those of individuals without diabetes. Tuberculosis with diabetes is characterized by elevated circulating levels of type 1 (IFN-γ, tumor necrosis factor-α, and IL-2), type 2 (IL-5), and type 17 (IL-17A) cytokines but decreased circulating levels of IL-22. This was associated with increased systemic levels of other proinflammatory cytokines (IL-1β, IL-6, and IL-18) and an antiinflammatory cytokine (IL-10) but not type 1 IFNs. Moreover, tuberculosis antigen-stimulated whole blood also showed increased levels of proinflammatory cytokines. Finally, type 1 and type 17 cytokines in plasma exhibit a significant positive correlation with hemoglobin A1C levels, indicating that impaired control of diabetes is associated with this proinflammatory milieu. Multivariate analysis revealed that the association of proinflammatory cytokines with diabetes mellitus was not influenced by age, sex, or other metabolic parameters. Our data reveal that tuberculosis with diabetes is characterized by heightened cytokine responsiveness, indicating that chronic inflammation underlying type 2 diabetes potentially contributes to increased immune pathology and poor control in tuberculosis infection.

  6. Type 2 Diabetes Mellitus Coincident with Pulmonary Tuberculosis Is Associated with Heightened Systemic Type 1, Type 17, and Other Proinflammatory Cytokines

    Science.gov (United States)

    Kumar, Nathella Pavan; Sridhar, Rathinam; Banurekha, Vaithilingam V.; Jawahar, Mohideen S.; Fay, Michael P.; Nutman, Thomas B.

    2013-01-01

    Rationale: Type 2 diabetes mellitus is a major risk factor for the development of active tuberculosis, although the biological basis underlying this susceptibility remains poorly characterized. Objectives and Methods: To identify the influence of coincident diabetes mellitus on cytokine levels in pulmonary tuberculosis, we examined circulating levels of a panel of cytokines and chemokines in the plasma of individuals with tuberculosis with diabetes and compared them with those of individuals without diabetes. Measurements and Main Results: Tuberculosis with diabetes is characterized by elevated circulating levels of type 1 (IFN-γ, tumor necrosis factor-α, and IL-2), type 2 (IL-5), and type 17 (IL-17A) cytokines but decreased circulating levels of IL-22. This was associated with increased systemic levels of other proinflammatory cytokines (IL-1β, IL-6, and IL-18) and an antiinflammatory cytokine (IL-10) but not type 1 IFNs. Moreover, tuberculosis antigen–stimulated whole blood also showed increased levels of proinflammatory cytokines. Finally, type 1 and type 17 cytokines in plasma exhibit a significant positive correlation with hemoglobin A1C levels, indicating that impaired control of diabetes is associated with this proinflammatory milieu. Multivariate analysis revealed that the association of proinflammatory cytokines with diabetes mellitus was not influenced by age, sex, or other metabolic parameters. Conclusions: Our data reveal that tuberculosis with diabetes is characterized by heightened cytokine responsiveness, indicating that chronic inflammation underlying type 2 diabetes potentially contributes to increased immune pathology and poor control in tuberculosis infection. PMID:23987505

  7. Lesions of either anterior orbitofrontal cortex or ventrolateral prefrontal cortex in marmoset monkeys heighten innate fear and attenuate active coping behaviors to predator threat

    Directory of Open Access Journals (Sweden)

    Yoshiro eShiba

    2015-01-01

    Full Text Available The ventral prefrontal cortex is an integral part of the neural circuitry that is dysregulated in mood and anxiety disorders. However, the contribution of its distinct sub-regions to the regulation of negative emotion are poorly understood. Recently we implicated both the ventrolateral PFC (vlPFC and anterior orbitofrontal cortex (antOFC in the regulation of conditioned fear and anxiety responses to a social stimulus, i.e. human intruder, in the marmoset monkey. In the present study we extend our investigations to determine the role of these two regions in regulating innate responses and coping strategies to a predator stimulus, i.e. a model snake. Both the vlPFC and antOFC lesioned groups exhibited enhanced anxiety-related responses to the snake in comparison to controls. Both groups also showed a reduction in active coping behavior. These results indicate that the vlPFC and antOFC contribute independently to the regulation of both innate fear and, as previously reported, conditioned fear, and highlight the importance of these regions in producing stimulus-appropriate coping responses. The finding that dysregulation in two distinct prefrontal regions produces the apparently similar behavioral phenotype of heightened negative emotion provides insight into the varied aetiology that may underlie this symptom across a wide variety of neuropsychiatric conditions with implications for personalized treatment strategies.

  8. The Relationship between Structure-Related Food Parenting Practices and Children's Heightened Levels of Self-Regulation in Eating.

    Science.gov (United States)

    Frankel, Leslie A; Powell, Elisabeth; Jansen, Elena

    Food parenting practices influence children's eating behaviors and weight status. Food parenting practices also influence children's self-regulatory abilities around eating, which has important implications for children's eating behaviors. The purpose of the following study is to examine use of structure-related food parenting practices and the potential impact on children's ability to self-regulate energy intake. Parents (n = 379) of preschool age children (M = 4.10 years, SD = 0.92) were mostly mothers (68.6%), Non-White (54.5%), and overweight/obese (50.1%). Hierarchical Multiple Regression was conducted to predict child self-regulation in eating from structure-related food parenting practices (structured meal setting, structured meal timing, family meal setting), while accounting for child weight status, parent age, gender, BMI, race, and yearly income. Hierarchical Multiple Regression results indicated that structure-related feeding practices (structured meal setting and family meal setting, but not structured meal timing) are associated with children's heightened levels of self-regulation in eating. Models examining the relationship within children who were normal weight and overweight/obese indicated the following: a relationship between structured meal setting and heightened self-regulation in eating for normal-weight children and a relationship between family meal setting and heightened self-regulation in eating for overweight/obese children. Researchers should further investigate these potentially modifiable parent feeding behaviors as a protective parenting technique, which possibly contributes to a healthy weight development by enhancing self-regulation in eating.

  9. Photowalk Exhibition opens at Microcosm

    CERN Multimedia

    Katarina Anthony

    2011-01-01

    The winning photographs from the 2010 Global Particle Physics Photowalk competition will go on display at Microcosm from 11 February to 2 April. The exhibition is part of a global photography event taking place over three continents, with Photowalk exhibitions opening simultaneously at Fermilab in the US, KEK in Japan and here at CERN.   DESY wire chamber - First place people's choice; second place global jury competition. Photographer: Hans-Peter Hildebrandt  If you were one of the 1,300 photography lovers who voted in last year’s Photowalk competition, this exhibition is your chance to see the winning entries in print. The exhibition will take place in the downstairs gallery of Microcosm, overlooking the garden. 15 photographs will be on display, with each of the laboratories that participated in Photowalk represented by their 3 winning entries. Among them will be the “people’s choice” sunburst photo of a particle detector at DESY (Photo 1), and...

  10. Globe exhibit wins international acclaim

    CERN Multimedia

    Katarina Anthony

    2011-01-01

    The Globe’s “Universe of Particles” exhibition has recently received four prestigious awards for its avant-garde design. This external praise is great encouragement for the CERN exhibitions currently on the drawing board.   The Universe of Particles exhibition has won 4 awards for its avant-garde design. Back in 2008, the design company Atelier Brückner was presented with a challenge: to design the layout of a new permanent exhibition for CERN, one that would epitomize both the Organization and its research. The brief was concise but complex: the exhibit had to be symbolic of the Organization, use modern technology, engage and immerse visitors, and, preferably, use touch-screen technology. With the help of IArt, an interactive technology firm, and based on the content provided by CERN’s Education Group, Atelier Brückner developed the “Universe of Particles” exhibit as it is today. Its principal concept centred on the s...

  11. Do more intelligent brains retain heightened plasticity for longer in development? A computational investigation

    Directory of Open Access Journals (Sweden)

    Michael S.C. Thomas

    2016-06-01

    Full Text Available Twin studies indicate that the heritability of general cognitive ability – the genetic contribution to individual differences – increases with age. Brant et al. (2013 reported that this increase in heritability occurs earlier in development for low ability children than high ability children. Allied with structural brain imaging results that indicate faster thickening and thinning of cortex for high ability children (Shaw et al., 2006, Brant and colleagues argued higher cognitive ability represents an extended sensitive period for brain development. However, they admitted no coherent mechanistic account can currently reconcile the key empirical data. Here, computational methods are employed to demonstrate the empirical data can be reconciled without recourse to variations in sensitive periods. These methods utilized population-based artificial neural network models of cognitive development. In the model, ability-related variations stemmed from the timing of the increases in the non-linearity of computational processes, causing dizygotic twins to diverge in their behavior. These occurred in a population where: (a ability was determined by the combined small contributions of many neurocomputational factors, and (b individual differences in ability were largely genetically constrained. The model’s explanation of developmental increases in heritability contrasts with proposals that these increases represent emerging gene-environment correlations (Haworth et al., 2010. The article advocates simulating inherited individual differences within an explicitly developmental framework.

  12. Prevention of Alcohol-Heightened Aggression by CRF-R1 Antagonists in Mice: Critical Role for DRN-PFC Serotonin Pathway

    OpenAIRE

    Quadros, Isabel M.; Hwa, Lara S.; Shimamoto, Akiko; Carlson, Julia; DeBold, Joseph F.; Miczek, Klaus A.

    2014-01-01

    Alcohol can escalate aggressive behavior in a significant subgroup of rodents, humans, and nonhuman primates. The present study investigated whether blockade of corticotropin-releasing factor receptor type 1 (CRF-R1) could prevent the emergence of alcohol-heightened aggression in mice. The serotonin (5-HT) pathway from the dorsal raphe nucleus (DRN) to the medial prefrontal cortex (mPFC) by CRF-R1 was investigated as a possible target for the prevention of alcohol-heightened aggressive behavi...

  13. Heightened Delta Power during Slow-Wave-Sleep in Patients with Rett Syndrome Associated with Poor Sleep Efficiency.

    Science.gov (United States)

    Ammanuel, Simon; Chan, Wesley C; Adler, Daniel A; Lakshamanan, Balaji M; Gupta, Siddharth S; Ewen, Joshua B; Johnston, Michael V; Marcus, Carole L; Naidu, Sakkubai; Kadam, Shilpa D

    2015-01-01

    Sleep problems are commonly reported in Rett syndrome (RTT); however the electroencephalographic (EEG) biomarkers underlying sleep dysfunction are poorly understood. The aim of this study was to analyze the temporal evolution of quantitative EEG (qEEG) biomarkers in overnight EEGs recorded from girls (2-9 yrs. old) diagnosed with RTT using a non-traditional automated protocol. In this study, EEG spectral analysis identified high delta power cycles representing slow wave sleep (SWS) in 8-9h overnight sleep EEGs from the frontal, central and occipital leads (AP axis), comparing age-matched girls with and without RTT. Automated algorithms quantitated the area under the curve (AUC) within identified SWS cycles for each spectral frequency wave form. Both age-matched RTT and control EEGs showed similar increasing trends for recorded delta wave power in the EEG leads along the antero-posterior (AP). RTT EEGs had significantly fewer numbers of SWS sleep cycles; therefore, the overall time spent in SWS was also significantly lower in RTT. In contrast, the AUC for delta power within each SWS cycle was significantly heightened in RTT and remained heightened over consecutive cycles unlike control EEGs that showed an overnight decrement of delta power in consecutive cycles. Gamma wave power associated with these SWS cycles was similar to controls. However, the negative correlation of gamma power with age (r = -.59; pcycles. Therefore, qEEG biomarkers of SWS in RTT evolved temporally and correlated significantly with clinical severity.

  14. Narcissism Predicts Heightened Cortisol Reactivity to a Psychosocial Stressor in Men.

    Science.gov (United States)

    Edelstein, Robin S; Yim, Ilona S; Quas, Jodi A

    2010-10-01

    Narcissists' sensitivity to social evaluation should increase their physiological reactivity to evaluative stressors. However, very few studies have assessed the physiological correlates of narcissism. In this study, participants completed an evaluative laboratory stressor or a non-evaluative control task. Cortisol reactivity-a marker of the hypothalamic-pituitary-adrenal (HPA) axis stress response-and negative affect (NA) were higher in the stress versus control condition. However, men showed larger cortisol responses and, among men, higher narcissism scores predicted greater cortisol reactivity and larger increases in NA. Narcissism was unrelated to cortisol reactivity and NA among women and in the control condition. These findings highlight the influence of defensive personality traits on HPA reactivity and suggest a pathway through which narcissistic traits might influence long-term health outcomes.

  15. Art Therapy Exhibitions: Exploitation or Advocacy?

    Science.gov (United States)

    Davis, Terri

    2017-01-01

    Promoting awareness of human trafficking by sharing trauma survivors' art and summaries of their life stories suggests ethical complexities that have been typically neglected by bioethicists. Although these survivors voluntarily share the objects they created during art therapy sessions, they are still at risk of harm, including further exploitation, due to their vulnerability, high rates of victim sensitivity, and the mental health consequences of their traumatic experiences. While some argue that the benefits of sublimation and art therapy for human trafficking survivors make sharing their art worth the risk, anti-trafficking organizations and supporters of such art exhibitions have responsibilities to be trauma informed. © 2017 American Medical Association. All Rights Reserved.

  16. Exhibition - Mathematics, A Beautiful Elsewhere

    CERN Multimedia

    2011-01-01

    From 21 October 2011 to 18 March 2012, the Fondation Cartier pour l’art contemporain will present the exhibition Mathematics: A Beautiful Elsewhere, an exhibition developed in association with the Institut des Hautes Études Scientifiques (IHÉS) and under the patronage of UNESCO. For this unprecedented event, the foundation invited mathematicians to work with artists with whom it has previously worked to create an exhibition that allows visitors to see, hear, do, interpret and think about mathematics. By bringing mathematics into its premises, the Fondation Cartier is itself undergoing the “sudden change of scenery” described by mathematician Alexandre Grothendieck. More information is available here. Fondation Cartier pour l’art contemporain 261, boulevard Raspail 75014 Paris http://fondation.cartier.com Private Visit For professors, researchers and all the staff of Mathematics departments...

  17. Peer victimization predicts heightened inflammatory reactivity to social stress in cognitively vulnerable adolescents.

    Science.gov (United States)

    Giletta, Matteo; Slavich, George M; Rudolph, Karen D; Hastings, Paul D; Nock, Matthew K; Prinstein, Mitchell J

    2017-09-11

    During adolescence, peer victimization is a potent type of social stressor that can confer enduring risk for poor mental and physical health. Given recent research implicating inflammation in promoting a variety of serious mental and physical health problems, this study examined the role that peer victimization and cognitive vulnerability (i.e. negative cognitive styles and hopelessness) play in shaping adolescents' pro-inflammatory cytokine responses to an acute social stressor. Adolescent girls at risk for psychopathology (n = 157; Mage  = 14.73 years; SD = 1.38) were exposed to a laboratory-based social stressor before and after which we assessed salivary levels of three key pro-inflammatory cytokines - interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α). As hypothesized, adolescents with greater peer victimization exposure exhibited greater increases in IL-6 and IL1-β in response to the laboratory-based social stressor. Moreover, for all three cytokines individually, as well as for a combined latent factor of inflammation, peer victimization predicted enhanced inflammatory responding most strongly for adolescents with high levels of hopelessness. The findings reveal a biological pathway by which peer victimization may interact with cognitive vulnerability to influence health in adolescence. © 2017 Association for Child and Adolescent Mental Health.

  18. Heightened activity in social reward networks is associated with adolescents' risky sexual behaviors.

    Science.gov (United States)

    Eckstrand, Kristen L; Choukas-Bradley, Sophia; Mohanty, Arpita; Cross, Marissa; Allen, Nicholas B; Silk, Jennifer S; Jones, Neil P; Forbes, Erika E

    2017-10-01

    Adolescent sexual risk behavior can lead to serious health consequences, yet few investigations have addressed its neurodevelopmental mechanisms. Social neurocircuitry is postulated to underlie the development of risky sexual behavior, and response to social reward may be especially relevant. Typically developing adolescents (N=47; 18M, 29F; 16.3±1.4years; 42.5% sexual intercourse experience) completed a social reward fMRI task and reported their sexual risk behaviors (e.g., lifetime sexual partners) on the Youth Risk Behavior Survey (YRBS). Neural response and functional connectivity to social reward were compared for adolescents with higher- and lower-risk sexual behavior. Adolescents with higher-risk sexual behaviors demonstrated increased activation in the right precuneus and the right temporoparietal junction during receipt of social reward. Adolescents with higher-risk sexual behaviors also demonstrated greater functional connectivity between the precuneus and the temporoparietal junction bilaterally, dorsal medial prefrontal cortex, and left anterior insula/ventrolateral prefrontal cortex. The greater activation and functional connectivity in self-referential, social reward, and affective processing regions among higher sexual risk adolescents underscores the importance of social influence underlying sexual risk behaviors. Furthermore, results suggest an orientation towards and sensitivity to social rewards among youth engaging in higher-risk sexual behavior, perhaps as a consequence of or vulnerability to such behavior. Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.

  19. Violence: heightened brain attentional network response is selectively muted in Down syndrome.

    Science.gov (United States)

    Anderson, Jeffrey S; Treiman, Scott M; Ferguson, Michael A; Nielsen, Jared A; Edgin, Jamie O; Dai, Li; Gerig, Guido; Korenberg, Julie R

    2015-01-01

    The ability to recognize and respond appropriately to threat is critical to survival, and the neural substrates subserving attention to threat may be probed using depictions of media violence. Whether neural responses to potential threat differ in Down syndrome is not known. We performed functional MRI scans of 15 adolescent and adult Down syndrome and 14 typically developing individuals, group matched by age and gender, during 50 min of passive cartoon viewing. Brain activation to auditory and visual features, violence, and presence of the protagonist and antagonist were compared across cartoon segments. fMRI signal from the brain's dorsal attention network was compared to thematic and violent events within the cartoons between Down syndrome and control samples. We found that in typical development, the brain's dorsal attention network was most active during violent scenes in the cartoons and that this was significantly and specifically reduced in Down syndrome. When the antagonist was on screen, there was significantly less activation in the left medial temporal lobe of individuals with Down syndrome. As scenes represented greater relative threat, the disparity between attentional brain activation in Down syndrome and control individuals increased. There was a reduction in the temporal autocorrelation of the dorsal attention network, consistent with a shortened attention span in Down syndrome. Individuals with Down syndrome exhibited significantly reduced activation in primary sensory cortices, and such perceptual impairments may constrain their ability to respond to more complex social cues such as violence. These findings may indicate a relative deficit in emotive perception of violence in Down syndrome, possibly mediated by impaired sensory perception and hypoactivation of medial temporal structures in response to threats, with relative preservation of activity in pro-social brain regions. These findings indicate that specific genetic differences associated

  20. Trauma exposure relates to heightened stress, altered amygdala morphology and deficient extinction learning: Implications for psychopathology.

    Science.gov (United States)

    Cacciaglia, Raffaele; Nees, Frauke; Grimm, Oliver; Ridder, Stephanie; Pohlack, Sebastian T; Diener, Slawomira J; Liebscher, Claudia; Flor, Herta

    2017-02-01

    Stress exposure causes a structural reorganization in neurons of the amygdala. In particular, animal models have repeatedly shown that both acute and chronic stress induce neuronal hypertrophy and volumetric increase in the lateral and basolateral nuclei of amygdala. These effects are visible on the behavioral level, where stress enhances anxiety behaviors and provokes greater fear learning. We assessed stress and anxiety levels in a group of 18 healthy human trauma-exposed individuals (TR group) compared to 18 non-exposed matched controls (HC group), and related these measurements to amygdala volume. Traumas included unexpected adverse experiences such as vehicle accidents or sudden loss of a loved one. As a measure of aversive learning, we implemented a cued fear conditioning paradigm. Additionally, to provide a biological marker of chronic stress, we measured the sensitivity of the hypothalamus-pituitary-adrenal (HPA) axis using a dexamethasone suppression test. Compared to the HC, the TR group showed significantly higher levels of chronic stress, current stress and trait anxiety, as well as increased volume of the left amygdala. Specifically, we observed a focal enlargement in its lateral portion, in line with previous animal data. Compared to HC, the TR group also showed enhanced late acquisition of conditioned fear and deficient extinction learning, as well as salivary cortisol hypo-suppression to dexamethasone. Left amygdala volumes positively correlated with suppressed morning salivary cortisol. Our results indicate differences in trauma-exposed individuals which resemble those previously reported in animals exposed to stress and in patients with post-traumatic stress disorder and depression. These data provide new insights into the mechanisms through which traumatic stress might prompt vulnerability for psychopathology. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. Heightened brain response to pain anticipation in high-functioning adults with autism spectrum disorder.

    Science.gov (United States)

    Gu, Xiaosi; Zhou, Thomas J; Anagnostou, Evdokia; Soorya, Latha; Kolevzon, Alexander; Hof, Patrick R; Fan, Jin

    2017-04-27

    Autism spectrum disorder (ASD) is marked by both socio-communicative difficulties and abnormalities in sensory processing. Much of the work on sensory deficits in ASD has focused on tactile sensations and the perceptual aspects of somatosensation, such as encoding of stimulus intensity and location. Although aberrant pain processing has often been noted in clinical observations of patients with ASD, it remains largely uninvestigated. Importantly, the neural mechanism underlying higher order cognitive aspects of pain processing such as pain anticipation also remains unknown. Here we examined both pain perception and anticipation in high-functioning adults with ASD and matched healthy controls (HC) using an anticipatory pain paradigm in combination with functional magnetic resonance imaging (fMRI) and concurrent skin conductance response (SCR) recording. Participants were asked to choose a level of electrical stimulation that would feel moderately painful to them. Compared to HC group, ASD group chose a lower level of stimulation prior to fMRI. However, ASD participants showed greater activation in both rostral and dorsal anterior cingulate cortex during the anticipation of stimulation, but not during stimulation delivery. There was no significant group difference in insular activation during either pain anticipation or perception. However, activity in the left anterior insula correlated with SCR during pain anticipation. Taken together, these results suggest that ASD is marked with aberrantly higher level of sensitivity to upcoming aversive stimuli, which may reflect abnormal attentional orientation to nociceptive signals and a failure in interoceptive inference. © 2017 Federation of European Neuroscience Societies and John Wiley & Sons Ltd.

  2. Selective rescue of heightened anxiety but not gait ataxia in a premutation 90CGG mouse model of Fragile X-associated tremor/ataxia syndrome.

    Science.gov (United States)

    Castro, Hoanna; Kul, Emre; Buijsen, Ronald A M; Severijnen, Lies-Anne W F M; Willemsen, Rob; Hukema, Renate K; Stork, Oliver; Santos, Mónica

    2017-06-01

    A CGG-repeat expansion in the premutation range in the Fragile X mental retardation 1 gene (FMR1) has been identified as the genetic cause of Fragile X-associated tremor/ataxia syndrome (FXTAS), a late-onset neurodegenerative disorder that manifests with action tremor, gait ataxia and cognitive impairments. In this study, we used a bigenic mouse model, in which expression of a 90CGG premutation tract is activated in neural cells upon doxycycline administration-P90CGG mouse model. We, here, demonstrate the behavioural manifestation of clinically relevant features of FXTAS patients and premutation carrier individuals in this inducible mouse model. P90CGG mice display heightened anxiety, deficits in motor coordination and impaired gait and represent the first FXTAS model that exhibits an ataxia phenotype as observed in patients. The behavioural phenotype is accompanied by the formation of ubiquitin/FMRpolyglycine-positive intranuclear inclusions, as another hallmark of FXTAS, in the cerebellum, hippocampus and amygdala. Strikingly, upon cessation of transgene induction the anxiety phenotype of mice recovers along with a reduction of intranuclear inclusions in dentate gyrus and amygdala. In contrast, motor function deteriorates further and no reduction in intranuclear inclusions can be observed in the cerebellum. Our data thus demonstrate that expression of a 90CGG premutation expansion outside of the FMR1 context is sufficient to evoke an FXTAS-like behavioural phenotype. Brain region-specific neuropathology and (partial) behavioural reversibility make the inducible P90CGG a valuable mouse model for testing pathogenic mechanisms and therapeutic intervention methods. © The Author 2017. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  3. Decreased sexual motivation and heightened anxiety in male Long-Evans rats are correlated with the memory for a traumatic event.

    Science.gov (United States)

    Hawley, Wayne R; Grissom, Elin M; Belkin, Mark N; James, Thomas F; Dohanich, Gary P

    2013-05-01

    Individuals suffering from posttraumatic stress disorder (PTSD) frequently report disturbances in sexual functioning in addition to alterations in their affective behaviors. Notably, maladaptive cognitions and dysfunctional behaviors are perpetuated by the emergence of the intrusive thoughts that characterize the disorder. In rats, reminders of a traumatic event designed to simulate intrusive thoughts are associated with impairments in affective, social, and sexual behaviors. The current study examined the relationship between the memory for a traumatic event and changes in sexual and affective behaviors in male Long-Evans rats (N = 36). The trauma featured a combination stressor consisting of simultaneous exposure to a footshock and the odor of soiled cat litter. Memory for the trauma was reactivated by re-exposures to the context of the trauma in the absence of stressors and confirmed by assessing the percentage of time spent freezing. Following the second and final reminder, traumatized males exhibited reduced sexual motivation and increased anxiety, signified by longer latencies to achieve their first mount on a post-stress test of sexual behavior, and longer latencies to begin feeding in a novel environment, respectively. Correlational analyses revealed that decreased sexual motivation and heightened anxiety were predicted by the memory for the trauma as indicated by the time spent freezing during the re-exposures. The findings from the current study have implications for understanding the relationship between stress and sexual functioning and indicate that the impairments in sexual behavior that often occur in individuals with PTSD may be impacted by their memory for the trauma.

  4. Fetal exposure to moderate ethanol doses: heightened operant responsiveness elicited by ethanol-related reinforcers.

    Science.gov (United States)

    March, Samanta M; Abate, Paula; Spear, Norman E; Molina, Juan Carlos

    2009-11-01

    Prenatal exposure to moderate ethanol doses during late gestation modifies postnatal ethanol palatability and ingestion. The use of Pavlovian associative procedures has indicated that these prenatal experiences broaden the range of ethanol doses capable of supporting appetitive conditioning. Recently, a novel operant technique aimed at analyzing neonatal predisposition to gain access to ethanol has been developed. Experiment 1 tested the operant conditioning technique for developing rats described by Arias and colleagues (2007) and Bordner and colleagues (2008). In Experiment 2, we analyzed changes in the disposition to gain access to ethanol as a result of moderate prenatal exposure to the drug. In Experiment 1, newborn pups were intraorally cannulated and placed in a supine position that allowed access to a touch-sensitive sensor. Paired pups received an intraoral administration of a given reinforcer (milk or quinine) contingent upon physical contact with the sensor. Yoked controls received similar reinforcers only when Paired pups activated the circuit. In Experiment 2, natural reinforcers (water or milk) as well as ethanol (3% or 6% v/v) or an ethanol-related reinforcer (sucrose compounded with quinine) were tested. In this experiment, pups had been exposed to water or ethanol (1 or 2 g/kg) during gestational days 17 to 20. Experiment 1 confirmed previous results showing that 1-day-old pups rapidly learn an operant task to gain access to milk, but not to gain access to a bitter tastant. Experiment 2 showed that water and milk were highly reinforcing across prenatal treatments. Furthermore, general activity during training was not affected by prenatal exposure to ethanol. Most importantly, prenatal ethanol exposure facilitated conditioning when the reinforcer was 3% v/v ethanol or a psychophysical equivalent of ethanol's gustatory properties (sucrose-quinine). The present results suggest that late prenatal experience with ethanol changes the predisposition of

  5. Mobile Technologies in Museum Exhibitions

    Directory of Open Access Journals (Sweden)

    Sandra Medić

    2014-10-01

    Full Text Available In order to be up–to–date and give visitors a memorable and unique experience, museums are including usage of digital technologies in their exhibitions. Even though museums in Serbia are very important part of tourism offer, they still have traditional settings that are poorly interpreted. The majority of them have a scientific and historical review which is unattractive for various target groups of visitors and for museums it’s important to continually try out new ways in interpretation of their settings. Because technology continues to rapidly change the way we communicate, cultural institutions should adapt to new ways of communication with their visitors. This paper examines mobile technologies that can be used in museums to give visitors a different experience and transfer the knowledge innovatively. In that way it will be presented the modern concept of presentation of museum exhibitions, focusing on usage of mobile devices through mobile applications and QR codes. The paper provides the broad understanding of usage mobile technologies in museum exhibitions with its advantages and limitations. The research results can help the museums management to improve interpretation and communication with visitors and enrich the visitor experience.

  6. "Big Science" exhibition at Balexert

    CERN Multimedia

    2008-01-01

    CERN is going out to meet those members of the general public who were unable to attend the recent Open Day. The Laboratory will be taking its "Big Science" exhibition from the Globe of Science and Innovation to the Balexert shopping centre from 19 to 31 May 2008. The exhibition, which shows the LHC and its experiments through the eyes of a photographer, features around thirty spectacular photographs measuring 4.5 metres high and 2.5 metres wide. Welcomed and guided around the exhibition by CERN volunteers, shoppers at Balexert will also have the opportunity to discover LHC components on display and watch films. "Fun with Physics" workshops will be held at certain times of the day. Main hall of the Balexert shopping centre, ground floor, from 9.00 a.m. to 7.00 p.m. Monday to Friday and from 10 a.m. to 6 p.m. on the two Saturdays. Call for volunteers All members of the CERN personnel are invited to enrol as volunteers to help welcom...

  7. Socio-economic inequalities in all-cause mortality in Europe: an exploration of the role of heightened social mobility.

    Science.gov (United States)

    Simons, Audrey M W; Groffen, Daniëlle A I; Bosma, Hans

    2013-12-01

    The larger than expected socio-economic inequalities in health in more egalitarian countries might be explained by a heightened social mobility in these countries. Therefore, the aim of this explorative study was to examine the associations between country-level social mobility, income inequality and socio-economic differences in all-cause mortality, using country-level secondary data from 12 European countries. Both income equality and social mobility were found to be associated with larger socio-economic differences in mortality, particularly in women. These findings suggest that social mobility and income equality, beside their shiny side of improving population health, might have a shady side of increasing socio-economic health inequalities.

  8. Fluticasone Furoate, Vilanterol, and Lung Function Decline in Patients with Moderate Chronic Obstructive Pulmonary Disease and Heightened Cardiovascular Risk.

    Science.gov (United States)

    Calverley, Peter M A; Anderson, Julie A; Brook, Robert D; Crim, Courtney; Gallot, Natacha; Kilbride, Sally; Martinez, Fernando J; Yates, Julie; Newby, David E; Vestbo, Jørgen; Wise, Robert; Celli, Bartolomé R

    2018-01-01

    Many patients with chronic obstructive pulmonary disease (COPD) have an accelerated loss of lung function. It is unclear whether drug treatment can modify this in patients with moderately severe disease. In a prespecified analysis of the key secondary outcome in SUMMIT (Study to Understand Mortality and Morbidity), we investigated whether the inhaled corticosteroid fluticasone furoate (FF; 100 μg), the long-acting β-agonist vilanterol (VI; 25 μg), or their combination (FF/VI) modified the rate of decline in FEV 1 compared with placebo. We also investigated how baseline covariates affected this decline. Spirometry was measured every 12 weeks in this event-driven, randomized, placebo-controlled trial of 16,485 patients with moderate COPD and heightened cardiovascular risk. An average of seven spirometric assessments per subject among the 15,457 patients with at least one on-treatment measurement were used in the analysis of rate of FEV 1 decline. All statistical comparisons are considered nominal. The adjusted rates of FEV 1 decline were -46 ml/yr (-3.0% of baseline) with placebo, -47 ml/yr (-3.1%) with VI, -38 ml/yr (-2.5%) with FF, and -38 ml/yr (-2.3%) with FF/VI. FF-containing regimens had lower rates of decline than placebo (P < 0.03), and FF/VI had a lower rate of decline than VI alone (P < 0.005). The FEV 1 decline was faster in current smokers, those with a lower body mass index, males, and patients with established cardiovascular disease. In patients with moderate COPD and heightened cardiovascular risk, FF alone or in combination with VI appears to reduce the rate of FEV 1 decline. Clinical trial registered with www.clinicaltrials.gov (NCT01313676).

  9. Gestational exposure to elevated testosterone levels induces hypertension via heightened vascular angiotensin II type 1 receptor signaling in rats.

    Science.gov (United States)

    Chinnathambi, Vijayakumar; More, Amar S; Hankins, Gary D; Yallampalli, Chandra; Sathishkumar, Kunju

    2014-07-01

    Pre-eclampsia is a life-threatening pregnancy disorder whose pathogenesis remains unclear. Plasma testosterone levels are elevated in pregnant women with pre-eclampsia and polycystic ovary syndrome, who often develop gestational hypertension. We tested the hypothesis that increased gestational testosterone levels induce hypertension via heightened angiotensin II signaling. Pregnant Sprague-Dawley rats were injected with vehicle or testosterone propionate from Gestational Day 15 to 19 to induce a 2-fold increase in plasma testosterone levels, similar to levels observed in clinical conditions like pre-eclampsia. A subset of rats in these two groups was given losartan, an angiotensin II type 1 receptor antagonist by gavage during the course of testosterone exposure. Blood pressure levels were assessed through a carotid arterial catheter and endothelium-independent vascular reactivity through wire myography. Angiotensin II levels in plasma and angiotensin II type 1 receptor expression in mesenteric arteries were also examined. Blood pressure levels were significantly higher on Gestational Day 20 in testosterone-treated dams than in controls. Treatment with losartan during the course of testosterone exposure significantly attenuated testosterone-induced hypertension. Plasma angiotensin II levels were not significantly different between control and testosterone-treated rats; however, elevated testosterone levels significantly increased angiotensin II type 1 receptor protein levels in the mesenteric arteries. In testosterone-treated rats, mesenteric artery contractile responses to angiotensin II were significantly greater, whereas contractile responses to K(+) depolarization and phenylephrine were unaffected. The results demonstrate that elevated testosterone during gestation induces hypertension in pregnant rats via heightened angiotensin II type 1 receptor-mediated signaling, providing a molecular mechanism linking elevated maternal testosterone levels with gestational

  10. Borneo 2007. Three European Exhibitions

    OpenAIRE

    Bernard Sellato

    2013-01-01

    The year 2007 appears to have been an exceptionally good one for Borneo in Europe. Two exhibitions were held in France, and one in Switzerland, which prominently featured the big island, its forests, its peoples, its cultures, and its arts. Here a brief review of these three events. Bornéo... Dayak et Punan. Peuples de la forêt tropicale humide, Musée d’Art et d’Archéologie, Laon, France, 25 November 2006 – 11 March 2007 The beautiful city of Laon, only a short distance by train or by car fro...

  11. Borneo 2007. Three European Exhibitions

    Directory of Open Access Journals (Sweden)

    Bernard Sellato

    2013-01-01

    Full Text Available The year 2007 appears to have been an exceptionally good one for Borneo in Europe. Two exhibitions were held in France, and one in Switzerland, which prominently featured the big island, its forests, its peoples, its cultures, and its arts. Here a brief review of these three events. Bornéo... Dayak et Punan. Peuples de la forêt tropicale humide, Musée d’Art et d’Archéologie, Laon, France, 25 November 2006 – 11 March 2007 The beautiful city of Laon, only a short distance by train or by car fro...

  12. CERN Permanent exhibitions short version

    CERN Multimedia

    2016-01-01

    Visits Explore by yourself the issues CERN's physicists are trying to solve: given that the entire universe is made of particles, where do they come from? Why do they behave in the way they do? Discover the massive apparatus used by physicists at CERN, like the LHC, and see how each part works. CERN invites the public to discover the mysteries of the Universe and the work of the world's biggest physics laboratory through free of charge guided tours and permanent exhibitions. As a group, with friends, individually, on foot, on your bike, come and discover CERN or explore it virtually. Welcome!

  13. Enrico Fermi exhibition at CERN

    CERN Multimedia

    2002-01-01

    A touring exhibition celebrating the centenary of Enrico Fermi's birth in 1901 will be on display at CERN (Main Building, Mezzanine) from 12-27 September. You are cordially invited to the opening celebration on Thursday 12 September at 16:00 (Main Building, Council Chamber), which will include speechs from: Luciano Maiani Welcome and Introduction Arnaldo Stefanini Celebrating Fermi's Centenary in Documents and Pictures Antonino Zichichi The New 'Centro Enrico Fermi' at Via Panisperna Ugo Amaldi Fermi at Via Panisperna and the birth of Nuclear Medicine Jack Steinberger Fermi in Chicago Valentin Telegdi A Close-up of Fermi and the screening of a documentary video about Fermi: Scienziati a Pisa: Enrico Fermi (Scientists at Pisa: Enrico Fermi) created by Francesco Andreotti for La Limonaia from early film, photographs and sound recordings (In Italian, with English subtitles - c. 30 mins). This will be followed by an aperitif on the Mezz...

  14. Crows spontaneously exhibit analogical reasoning.

    Science.gov (United States)

    Smirnova, Anna; Zorina, Zoya; Obozova, Tanya; Wasserman, Edward

    2015-01-19

    Analogical reasoning is vital to advanced cognition and behavioral adaptation. Many theorists deem analogical thinking to be uniquely human and to be foundational to categorization, creative problem solving, and scientific discovery. Comparative psychologists have long been interested in the species generality of analogical reasoning, but they initially found it difficult to obtain empirical support for such thinking in nonhuman animals (for pioneering efforts, see [2, 3]). Researchers have since mustered considerable evidence and argument that relational matching-to-sample (RMTS) effectively captures the essence of analogy, in which the relevant logical arguments are presented visually. In RMTS, choice of test pair BB would be correct if the sample pair were AA, whereas choice of test pair EF would be correct if the sample pair were CD. Critically, no items in the correct test pair physically match items in the sample pair, thus demanding that only relational sameness or differentness is available to support accurate choice responding. Initial evidence suggested that only humans and apes can successfully learn RMTS with pairs of sample and test items; however, monkeys have subsequently done so. Here, we report that crows too exhibit relational matching behavior. Even more importantly, crows spontaneously display relational responding without ever having been trained on RMTS; they had only been trained on identity matching-to-sample (IMTS). Such robust and uninstructed relational matching behavior represents the most convincing evidence yet of analogical reasoning in a nonprimate species, as apes alone have spontaneously exhibited RMTS behavior after only IMTS training. Copyright © 2015 Elsevier Ltd. All rights reserved.

  15. 520-d Isolation and confinement simulating a flight to Mars reveals heightened immune responses and alterations of leukocyte phenotype.

    Science.gov (United States)

    Yi, B; Rykova, M; Feuerecker, M; Jäger, B; Ladinig, C; Basner, M; Hörl, M; Matzel, S; Kaufmann, I; Strewe, C; Nichiporuk, I; Vassilieva, G; Rinas, K; Baatout, S; Schelling, G; Thiel, M; Dinges, D F; Morukov, B; Choukèr, A

    2014-08-01

    During interplanetary exploration, chronic stress caused by long term isolation and confinement in the spacecraft is one of the major concerns of physical and psychological health of space travelers. And for human on Earth, more and more people live in an isolated condition, which has become a common social problem in modern western society. Collective evidences have indicated prolonged chronic stress could bring big influence to human immune function, which may lead to a variety of health problems. However, to what extent long-term isolation can affect the immune system still remains largely unknow. A simulated 520-d Mars mission provided an extraordinary chance to study the effect of prolonged isolation. Six healthy males participated in this mission and their active neuroendocrine and immune conditions were studied with saliva and blood samples from all participants on chosen time points during the isolation period. As a typical neuroendocrine parameter, stress hormone cortisol was measured in the morning saliva samples. Immune phenotype changes were monitored through peripheral leukocyte phenotype analysis. Using an ex vivo viral infection simulation assay we assessed the immune response changes characterized by the ability to produce representative endogenous pro-inflammatory cytokines. The results of this study revealed elevated cortisol levels, increased lymphocyte amount and heightened immune responses, suggesting that prolonged isolation acting as chronic stressors are able to trigger leukocyte phenotype changes and poorly controlled immune responses. Copyright © 2014 Elsevier Inc. All rights reserved.

  16. Parasite-stress promotes in-group assortative sociality: the cases of strong family ties and heightened religiosity.

    Science.gov (United States)

    Fincher, Corey L; Thornhill, Randy

    2012-04-01

    Throughout the world people differ in the magnitude with which they value strong family ties or heightened religiosity. We propose that this cross-cultural variation is a result of a contingent psychological adaptation that facilitates in-group assortative sociality in the face of high levels of parasite-stress while devaluing in-group assortative sociality in areas with low levels of parasite-stress. This is because in-group assortative sociality is more important for the avoidance of infection from novel parasites and for the management of infection in regions with high levels of parasite-stress compared with regions of low infectious disease stress. We examined this hypothesis by testing the predictions that there would be a positive association between parasite-stress and strength of family ties or religiosity. We conducted this study by comparing among nations and among states in the United States of America. We found for both the international and the interstate analyses that in-group assortative sociality was positively associated with parasite-stress. This was true when controlling for potentially confounding factors such as human freedom and economic development. The findings support the parasite-stress theory of sociality, that is, the proposal that parasite-stress is central to the evolution of social life in humans and other animals.

  17. High body mass index is associated with heightened systemic and mycobacterial antigen - Specific pro-inflammatory cytokines in latent tuberculosis.

    Science.gov (United States)

    Anuradha, Rajamanickam; Munisankar, Saravanan; Bhootra, Yukthi; Dolla, Chandrakumar; Kumaran, Paul; Babu, Subash

    2016-12-01

    High body mass index (HBMI) has been shown to be protective against active tuberculosis (TB), although the biological mechanism underlying this protection is poorly understood. The immunological association between HBMI and latent TB has never been examined. In order to study the association of HBMI with latent TB, we examined the circulating and TB- antigen or mitogen stimulated levels of a large panel of cytokines in individuals with latent TB (LTB) and high or normal body mass index (HBMI or NBMI). HBMI is characterized by heightened circulating levels of pro-inflammatory (IFNγ, TNFα, IL-22, IL-1α, IL-12 and GM-CSF) cytokines but decreased circulating levels of anti-inflammatory cytokines (IL-4, IL-5 and TGFβ). This systemic cytokine profile is associated with elevated TB-antigen and mitogen stimulated levels of IFNγ, TNFα, IL-2 and IL-1α and diminished levels of IL-10 and TGFβ. In addition, we also observed a positive correlation between the circulating levels of IFNγ, TNFα, IL-22, IL-1α with BMI and a negative correlation between the circulating levels of IL-10, TGFβ and BMI. Our data, therefore, suggest the modulation of protective and regulatory cytokines might underlie the protective effect of HBMI against the development of active TB. Published by Elsevier Ltd.

  18. Nicotine during pregnancy: changes induced in neurotransmission, which could heighten proclivity to addict and induce maladaptive control of attention.

    Science.gov (United States)

    Kohlmeier, K A

    2015-06-01

    Prenatal exposure to nicotine, occurring either via maternal smoking or via use of transdermal nicotine patches to facilitate cigarette abstinence by pregnant women, is associated with ∼ 13% of pregnancies worldwide. Nicotine exposure during gestation has been correlated with several negative physiological and psychosocial outcomes, including heightened risk for aberrant behaviors involving alterations in processing of attention as well as an enhanced liability for development of drug dependency. Nicotine is a terotogen, altering neuronal development of various neurotransmitter systems, and it is likely these alterations participate in postnatal deficits in attention control and facilitate development of drug addiction. This review discusses the alterations in neuronal development within the brain's major neurotransmitter systems, with special emphasis placed on alterations within the laterodorsal tegmental nucleus, in light of the role this cholinergic nucleus plays in attention and addiction. Changes induced within this nucleus by gestational exposure to nicotine, in combination with changes induced in other brain regions, are likely to contribute to the transgenerational burden imposed by nicotine. Although neuroplastic changes induced by nicotine are not likely to act in isolation, and are expected to interact with epigenetic changes induced by preconception exposure to drugs of abuse, unraveling these changes within the developing brain will facilitate eventual development of targeted treatments for the unique vulnerability for arousal disorders and development of addiction within the population of individuals who have been prenatally exposed to nicotine.

  19. Eating under observation: a systematic review and meta-analysis of the effect that heightened awareness of observation has on laboratory measured energy intake.

    Science.gov (United States)

    Robinson, Eric; Hardman, Charlotte A; Halford, Jason C G; Jones, Andrew

    2015-08-01

    Laboratory paradigms are commonly used to study human energy intake. However, the extent to which participants believe their eating behavior is being measured may affect energy intake and is a methodologic factor that has received little consideration. Our main objective was to examine available evidence for the effect that heightened awareness of observation has on energy intake in a laboratory setting. We systematically reviewed laboratory studies that allowed for experimental examination of the effect that heightened awareness of observation has on energy intake. From these experimental studies we combined effect estimates using inverse variance meta-analysis, calculating the standardized mean difference (SMD) in energy intake between heightened-awareness and control conditions and qualitatively synthesized potential moderators of this effect. Nine studies, providing 22 comparisons, were eligible for inclusion. These studies largely sampled young women and examined the energy intake of energy-dense snack foods. Evidence indicated that heightened awareness of observation was associated with reduced energy intake when compared with the control condition (random-effects SMD: 0.45; 95% CI: 0.25, 0.66; P energy intake in a laboratory setting. These findings suggest that laboratory studies should attempt to minimize the degree to which participants are aware that their eating behavior is being measured. © 2015 American Society for Nutrition.

  20. Interoceptive Sensitivity and Self-Reports of Emotional Experience

    OpenAIRE

    Barrett, Lisa Feldman; Quigley, Karen S.; Bliss-Moreau, Eliza; Aronson, Keith R.

    2004-01-01

    People differ in the extent to which they emphasize feelings of activation or deactivation in their verbal reports of experienced emotion, termed arousal focus (AF). Two multimethod studies indicate that AF is linked to heightened interoceptive sensitivity (as measured by performance on a heartbeat detection task). People who were more sensitive to their heartbeats emphasized feelings of activation and deactivation when reporting their experiences of emotion over time more than did those who ...

  1. Capability for suicide interacts with states of heightened arousal to predict death by suicide beyond the effects of depression and hopelessness.

    Science.gov (United States)

    Ribeiro, Jessica D; Yen, Shirley; Joiner, Thomas; Siegler, Ilene C

    2015-12-01

    States of heightened arousal (e.g., agitation, sleep disturbance) have been repeatedly linked to suicidal thoughts and behaviors, including attempts and death. Studies have further indicated that these states may be particularly pernicious among individuals who evidence high suicidal capability. The objective of this study was to examine the interactive effects of heightened arousal and the capability for suicide in the prospective prediction of death by suicide. We examine this relation beyond the effects of robust predictors of suicide, namely depression and hopelessness. Participants were drawn from a larger study of undergraduates who completed baseline assessments during their freshman year and were then followed to time of death. The sample in this study only included individuals who had died by suicide (n=96) or other causes (n=542). Proxy measures to assess predictor variables were constructed using items from the MMPI, which was administered at baseline. An independent sample of clinical outpatients (n=was used to evaluate the construct validity of the proxy measures). Results were in line with expectation: heightened arousal interacted with capability for suicide to prospectively predict death by suicide, such that, as severity of heightened arousal symptoms increased, the likelihood of death by suicide increased among individuals high but not low on capability for suicide. Limitations include the use of proxy measures, the extended length of follow-up, and the homogeneity of the sample (i.e., primarily White males). These findings add to an emerging literature that supports the moderating influence of capability for suicide on the relationship between states of heightened arousal on the likelihood of death by suicide. Copyright © 2015 Elsevier B.V. All rights reserved.

  2. Early life bisphenol A exposure and neurobehavior at 8years of age: Identifying windows of heightened vulnerability.

    Science.gov (United States)

    Stacy, Shaina L; Papandonatos, George D; Calafat, Antonia M; Chen, Aimin; Yolton, Kimberly; Lanphear, Bruce P; Braun, Joseph M

    2017-10-01

    Early life BPA exposure could affect neurobehavior, but few studies have investigated whether there are developmental periods when the fetus or child is more vulnerable to these potential effects. We explored windows of vulnerability to BPA exposure in a multiethnic cohort of 228 mothers and their children from Cincinnati, Ohio. We measured urinary BPA concentrations at up to two prenatal and six postnatal time points from the 2nd trimester of pregnancy until the child was age 8years. At age 8years, we administered the Behavioral Assessment System for Children-2 (BASC-2), Behavior Rating Inventory of Executive Function, and Wechsler Intelligence Scale for Children-IV. We estimated covariate-adjusted differences in composite scores from each instrument using a multiple informant model designed to identify heightened windows of vulnerability. Among all children, there was not strong evidence that the associations between BPA and neurobehavior varied by the timing of exposure (Visit x BPA p-values≥0.16). However, child sex modified the associations of repeated BPA measures with BASC-2 scores (Visit x Sex x BPA p-values=0.02-0.23). For example, each 10-fold increase in prenatal BPA was associated with more externalizing behaviors in girls (β=6.2, 95% CI: 0.8, 11.6), but not boys (β=-0.8, 95% CI: -5.0, 3.4). In contrast, a 10-fold increase in 8-year BPA was associated with more externalizing behaviors in boys (β=3.9, 95% CI: 0.6, 7.2), but not girls (β=0.3, 95% CI: -3.5, 4.1). We found that sex-dependent associations between BPA and child neurobehavior may depend on the timing of BPA exposure. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. Exhibits Enhanced by Stand-Alone Computers.

    Science.gov (United States)

    Van Rennes, Eve C.

    Both the development and evaluation of one of a set of computer programs designed for use by visitors as adjuncts to museum exhibits are described. Museum displays used were (1) a static, behind-glass exhibit on evolution; (2) a hands-on primitive stone age tools exhibit; and (3) a Foucault pendulum. A computer placed next to each exhibit served…

  4. HIV-infected individuals with low CD4/CD8 ratio despite effective antiretroviral therapy exhibit altered T cell subsets, heightened CD8+ T cell activation, and increased risk of non-AIDS morbidity and mortality.

    Directory of Open Access Journals (Sweden)

    Sergio Serrano-Villar

    2014-05-01

    Full Text Available A low CD4/CD8 ratio in elderly HIV-uninfected adults is associated with increased morbidity and mortality. A subset of HIV-infected adults receiving effective antiretroviral therapy (ART fails to normalize this ratio, even after they achieve normal CD4+ T cell counts. The immunologic and clinical characteristics of this clinical phenotype remain undefined. Using data from four distinct clinical cohorts and three clinical trials, we show that a low CD4/CD8 ratio in HIV-infected adults during otherwise effective ART (after CD4 count recovery above 500 cells/mm3 is associated with a number of immunological abnormalities, including a skewed T cell phenotype from naïve toward terminally differentiated CD8+ T cells, higher levels of CD8+ T cell activation (HLADR+CD38+ and senescence (CD28- and CD57+CD28-, and higher kynurenine/tryptophan ratio. Changes in the peripheral CD4/CD8 ratio are also reflective of changes in gut mucosa, but not in lymph nodes. In a longitudinal study, individuals who initiated ART within six months of infection had greater CD4/CD8 ratio increase compared to later initiators (>2 years. After controlling for age, gender, ART duration, nadir and CD4 count, the CD4/CD8 ratio predicted increased risk of morbidity and mortality. Hence, a persistently low CD4/CD8 ratio during otherwise effective ART is associated with increased innate and adaptive immune activation, an immunosenescent phenotype, and higher risk of morbidity/mortality. This ratio may prove useful in monitoring response to ART and could identify a unique subset of individuals needed of novel therapeutic interventions.

  5. Ants exhibit asymmetric hybridization in a mosaic hybrid zone.

    Science.gov (United States)

    Purcell, Jessica; Zahnd, Sacha; Athanasiades, Anouk; Türler, Rebecca; Chapuisat, Michel; Brelsford, Alan

    2016-10-01

    Research on hybridization between species provides unparalleled insights into the pre- and postzygotic isolating mechanisms that drive speciation. In social organisms, colony-level incompatibilities may provide additional reproductive barriers not present in solitary species, and hybrid zones offer an opportunity to identify these barriers. Here, we use genotyping-by-sequencing to sequence hundreds of markers in a hybrid zone between two socially polymorphic ant species, Formica selysi and Formica cinerea. We characterize the zone, determine the frequency of hybrid workers, infer whether hybrid queens or males are produced and investigate whether hybridization is influenced by colony social organization. We also compare cuticular hydrocarbon profiles and aggression levels between the two species. The hybrid zone exhibits a mosaic structure. The asymmetric distribution of hybrids skewed towards F. cinerea suggests a pattern of unidirectional nuclear gene flow from F. selysi into F. cinerea. The occurrence of backcrossed individuals indicates that hybrid queens and/or males are fertile, and the presence of the F. cinerea mitochondrial haplotype in 97% of hybrids shows that successful F1 hybrids will generally have F. cinerea mothers and F. selysi fathers. We found no evidence that social organization contributes to speciation, because hybrids occur in both single-queen and multiple-queen colonies. Strongly differentiated cuticular hydrocarbon profiles and heightened interspecific aggression further reveal that species recognition cues are both present and perceived. The discovery of fertile hybrids and asymmetrical gene flow is unusual in ants, and this hybrid zone will therefore provide an ideal system with which to investigate speciation in social insects. © 2016 John Wiley & Sons Ltd.

  6. Investigating Design Research Landscapes through Exhibition

    DEFF Research Database (Denmark)

    Jönsson, Li; Hansen, Flemming Tvede; Mäkelä, Maarit

    2013-01-01

    What characterizes a design research exhibition compared to a traditional design and art exhibition? How do you show the very materialities of the design experiments as a means for communicating knowledge of research and of practice? How do you present, review and utilize such an exhibition? With...

  7. Affordances and distributed cognition in museum exhibitions

    DEFF Research Database (Denmark)

    Achiam, Marianne; May, Michael; Marandino, Martha

    2014-01-01

    consistent framework. Here, we invoke the notions of affordance and distributed cognition to explain in a coherent way how visitors interact with exhibits and exhibit spaces and make meaning from those interactions, and we exemplify our points using observations of twelve visitors to exhibits at a natural...... history museum. We show how differences in exhibit characteristics give rise to differences in the interpretive strategies used by visitors in their meaning-making process, and conclude by discussing how the notions of affordance and distributed cognition can be used in an exhibit design perspective....

  8. A Heuristic for Improving Transmedia Exhibition Experience

    DEFF Research Database (Denmark)

    Selvadurai, Vashanth; Rosenstand, Claus Andreas Foss

    2017-01-01

    The area of interest is transmedia experiences in exhibitions. The research question is: How to involve visitors in a transmedia experience for an existing exhibition, which bridges the pre-, during- and post-experience? Research through design, and action research are the methods used to design...... and reflect on a transmedia experience for an existing exhibition. This is framed with literature about exhibitions and transmedia, and analyzed with quantitative data from a case-study of visitors in the exhibition; this is organizationally contextualized. The contribution covers a significant gap...... in the scientific field of designing transmedia experience in an exhibition context that links the pre- and post-activities to the actual visit (during-activities). The result of this study is a preliminary heuristic for establishing a relation between the platform and content complexity in transmedia exhibitions....

  9. Space exhibitions: the science encounters the public

    Science.gov (United States)

    Coliolo, F.; Menendez, M.

    The widespread dissemination of science has always been one pillar of the development of human knowledge. There are several methods to structure interaction with the public: media, conferences, various written genres, and exhibitions. But: how to attract the public? How to arouse interest among future generation, insatiable for knowledge? In this paper we focus on space exhibitions, whose content combines mystery, discovery and science. The preparation of an exhibition is based on guidelines discussed between an interdisciplinary team and the exhibition project manager, the purpose of which is to find a coherent "strategy" to select information and to choose a concise, efficient, smart and original way to "visualize" the messages. Exhibition visitors are "privileged" because the interactivity is first emotive, then mental and cultural; the audience is universal. The goal of an exhibition is not to explain the content, but to stimulate the audience's curiosity in an attractive environment. We show some photos of ESA exhibitions, and try to understand if the visual impact is the first step towards a "multi-sensory" approach to communication. "A good exhibition can never be replaced by a book, a film or a lecture. A good exhibition creates a thirst for books, film, lectures. A good exhibition changes the visitors"(J. Wagensberg, Modern scientific museology")

  10. PARK2 patient neuroprogenitors show increased mitochondrial sensitivity to copper.

    Science.gov (United States)

    Aboud, Asad A; Tidball, Andrew M; Kumar, Kevin K; Neely, M Diana; Han, Bingying; Ess, Kevin C; Hong, Charles C; Erikson, Keith M; Hedera, Peter; Bowman, Aaron B

    2015-01-01

    Poorly-defined interactions between environmental and genetic risk factors underlie Parkinson's disease (PD) etiology. Here we tested the hypothesis that human stem cell derived forebrain neuroprogenitors from patients with known familial risk for early onset PD will exhibit enhanced sensitivity to PD environmental risk factors compared to healthy control subjects without a family history of PD. Two male siblings (SM and PM) with biallelic loss-of-function mutations in PARK2 were identified. Human induced pluripotent stem cells (hiPSCs) from SM, PM, and four control subjects with no known family histories of PD or related neurodegenerative diseases were utilized. We tested the hypothesis that hiPSC-derived neuroprogenitors from patients with PARK2 mutations would show heightened cell death, mitochondrial dysfunction, and reactive oxygen species generation compared to control cells as a result of exposure to heavy metals (PD environmental risk factors). We report that PARK2 mutant neuroprogenitors showed increased cytotoxicity with copper (Cu) and cadmium (Cd) exposure but not manganese (Mn) or methyl mercury (MeHg) relative to control neuroprogenitors. PARK2 mutant neuroprogenitors also showed a substantial increase in mitochondrial fragmentation, initial ROS generation, and loss of mitochondrial membrane potential following Cu exposure. Our data substantiate Cu exposure as an environmental risk factor for PD. Furthermore, we report a shift in the lowest observable effect level (LOEL) for greater sensitivity to Cu-dependent mitochondrial dysfunction in patients SM and PM relative to controls, correlating with their increased genetic risk for PD. Copyright © 2015 Elsevier Inc. All rights reserved.

  11. Which exhibition attributes create repeat visitation?

    OpenAIRE

    Whitfield, J.; Webber, D. J.

    2011-01-01

    This study identifies exhibition attributes deemed important by attendees’ in determining their attendance at the UK biennial MICROSCIENCE 2008 exhibition using a self-administered internet-based questionnaire. Perceived performance of attributes by attendees is also established. Attendees consider meeting specialists as well as gaining product and technical information to be very important attributes for exhibition selection. Application of an Importance Performance Analysis suggests that re...

  12. Deficits of hot executive function in developmental coordination disorder: Sensitivity to positive social cues

    NARCIS (Netherlands)

    Rahimi-Golkhandan, S.; Steenbergen, B.; Piek, J.P.; Wilson, P.H.

    2014-01-01

    Recent research shows that children with motor coordination problems (or developmental coordination disorder - DCD) show deficits in not only cool executive function (EF), but also hot EF. We aimed to determine whether this deficit of hot EF is due to heightened sensitivity to rewarding stimuli,

  13. Deficits of hot executive function in developmental coordination disorder: Sensitivity to positive social cues

    NARCIS (Netherlands)

    Rahimi-Golkhandan, S.; Steenbergen, B.; Piek, J.P.; Wilson, P.H.

    2014-01-01

    Recent research shows that children with motor coordination problems (or developmental coordination disorder – DCD) show deficits in not only cool executive function (EF), but also hot EF. We aimed to determine whether this deficit of hot EF is due to heightened sensitivity to rewarding stimuli,

  14. Sensitive Periods of Emotion Regulation: Influences of Parental Care on Frontoamygdala Circuitry and Plasticity

    Science.gov (United States)

    Gee, Dylan G.

    2016-01-01

    Early caregiving experiences play a central role in shaping emotional development, stress physiology, and refinement of limbic circuitry. Converging evidence across species delineates a sensitive period of heightened neuroplasticity when frontoamygdala circuitry is especially amenable to caregiver inputs early in life. During this period, parental…

  15. 18 CFR 156.5 - Exhibits.

    Science.gov (United States)

    2010-04-01

    ... local authorizations. (i) A copy of any certificate of public convenience and necessity or similar..., showing towns and communities to be served, and (b) gas producing and storage filed, or other sources of.... (8) Exhibit G-II—Flow diagram data. Exhibits G and G-I shall be accompanied by a statement of...

  16. 18 CFR 50.7 - Applications: exhibits.

    Science.gov (United States)

    2010-04-01

    ... ELECTRIC TRANSMISSION FACILITIES § 50.7 Applications: exhibits. Each exhibit must contain a title page..., and substations description including: (i) Conductor size and type; (ii) Type of structures; (iii... existing if applicable) substations or switching stations that will be associated with the proposed new...

  17. Encountering Nanotechnology in an Interactive Exhibition

    Science.gov (United States)

    Murriello, Sandra E.; Knobel, Marcelo

    2008-01-01

    This article offers findings from a learning sciences-informed evaluation of a nanoscience and nanotechnology exhibition called Nano-Aventura (NanoAdventure), based on four interactive-collaborative games and two narrated videos. This traveling exhibition was developed in Brazil by the Museu Exploratorio de Ciencias for children and teenagers…

  18. Let's play game exhibitions : A curator's perspective

    NARCIS (Netherlands)

    de Vos, Jesse; Glas, M.A.J.|info:eu-repo/dai/nl/330981447; van Vught, J.F.|info:eu-repo/dai/nl/413532682

    2017-01-01

    The Netherlands Institute for Sound and Vision is home to The Experience, a museum exhibiting the history of media in the Netherlands. For ten months in 2016 and 2017, The Experience hosted a temporary exhibition entitled Let’s YouTube . During the Let’s YouTube game month, we programmed a ten-day

  19. Science Fiction Exhibits as STEM Gateways

    Science.gov (United States)

    Robie, Samantha

    Women continue to hold less than a quarter of all STEM jobs in the United States, prompting many museums to develop programs and exhibits with the express goal of interesting young girls in scientific fields. At the same time, a number of recent museum exhibits have harnessed the popularity of pop culture and science fiction in order to interest general audiences in STEM subject matter, as well as using the exhibits as springboards to expand or shift mission goals and focus. Because science fiction appears to be successful at raising interest in STEM fields, it may be an effective way to garner the interest of young girls in STEM in particular. This research seeks to describe the ways in which museums are currently using science fiction exhibits to interest young girls in STEM fields and careers. Research focused on four institutions across the country hosting three separate exhibits, and included staff interviews and content analysis of exhibit descriptions, promotional materials, a summative evaluation and supplementary exhibit productions. In some ways, science fiction exhibits do serve young girls, primarily through the inclusion of female role models, staff awareness, and prototype testing to ensure interactives are attractive to girls as well as to boys. However, STEM appears to be underutilized, which may be partly due to a concern within the field that the outcome of targeting a specific gender could be construed as "stereotyping".

  20. A Heuristic for Improving Transmedia Exhibition Experience

    DEFF Research Database (Denmark)

    Selvadurai, Vashanth; Rosenstand, Claus Andreas Foss

    2017-01-01

    The area of interest is transmedia experiences in exhibitions. The research question is: How to involve visitors in a transmedia experience for an existing exhibition, which bridges the pre-, during- and post-experience? Research through design, and action research are the methods used to design ...

  1. Artefacts and the performance of an exhibition

    DEFF Research Database (Denmark)

    Svabo, Connie

    2008-01-01

    The article explores the role of mediating artefacts in children's encounters with a museum of natural history. Using actor network theory it explores how a specific artefact shapes the way users relate to exhibited objects and how the artefact guides users' movements in the exhibition. The media...

  2. Memory and Mourning: An Exhibit History

    Science.gov (United States)

    Eberle, Scott G.

    2005-01-01

    Mounted by the Strong Museum in Rochester, New York, in 1993, and traveling nationally thereafter, the exhibit Memory and Mourning provided historical and contemporary perspectives to help museum guests explore their own reactions to loss and grief. In the process the exhibit's development team encountered a range of philosophical, historical,…

  3. Paolo Gioli: An Exercise in Exhibition Making

    Directory of Open Access Journals (Sweden)

    Enrico Camporesi

    2015-07-01

    Full Text Available The text is thought as a brief museological and museographical journey of Paolo Gioli’s exhibition “Volti” [“Faces”], that allows the reader to go through the exhibition-making process, discussing, among others, the difficulties that I have encountered.

  4. Heightened circulating levels of antimicrobial peptides in tuberculosis—Diabetes co-morbidity and reversal upon treatment

    Science.gov (United States)

    Kumar, Nathella Pavan; Moideen, Kadar; Viswanathan, Vijay; Sivakumar, Shanmugam; Menon, Pradeep A.; Kornfeld, Hardy

    2017-01-01

    Background The association of antimicrobial peptides (AMPs) with tuberculosis—diabetes comorbidity (PTB-DM) is not well understood. Methods To study the association of AMPs with PTB-DM, we examined the systemic levels of cathelicidin (LL37), human beta defensin– 2 (HBD2), human neutrophil peptides 1–3, (HNP1-3) and granulysin in individuals with either PTB-DM, PTB, latent TB (LTB) or no TB infection (NTB). Results Circulating levels of cathelicidin and HBD2 were significantly higher and granulysin levels were significantly lower in PTB-DM compared to PTB, LTB or NTB, while the levels of HNP1-3 were significantly higher in PTB-DM compared to LTB or NTB individuals. Moreover, the levels of cathelicidin and/or HBD2 were significantly higher in PTB-DM or PTB individuals with bilateral and cavitary disease and also exhibited a significant positive relationship with bacterial burden. Cathelidin, HBD2 and HNP1-3 levels exhibited a positive relationship with HbA1c and/or fasting blood glucose levels. Finally, anti-tuberculosis therapy resulted in significantly diminished levels of cathelicidin, HBD2, granulysin and significantly enhanced levels of HNP1-3 and granulysin in PTB-DM and/or PTB individuals. Conclusion Therefore, our data demonstrate that PTB-DM is associated with markedly enhanced levels of AMPs and diminished levels of granulysin. PMID:28910369

  5. Heightened circulating levels of antimicrobial peptides in tuberculosis-Diabetes co-morbidity and reversal upon treatment.

    Directory of Open Access Journals (Sweden)

    Nathella Pavan Kumar

    Full Text Available The association of antimicrobial peptides (AMPs with tuberculosis-diabetes comorbidity (PTB-DM is not well understood.To study the association of AMPs with PTB-DM, we examined the systemic levels of cathelicidin (LL37, human beta defensin- 2 (HBD2, human neutrophil peptides 1-3, (HNP1-3 and granulysin in individuals with either PTB-DM, PTB, latent TB (LTB or no TB infection (NTB.Circulating levels of cathelicidin and HBD2 were significantly higher and granulysin levels were significantly lower in PTB-DM compared to PTB, LTB or NTB, while the levels of HNP1-3 were significantly higher in PTB-DM compared to LTB or NTB individuals. Moreover, the levels of cathelicidin and/or HBD2 were significantly higher in PTB-DM or PTB individuals with bilateral and cavitary disease and also exhibited a significant positive relationship with bacterial burden. Cathelidin, HBD2 and HNP1-3 levels exhibited a positive relationship with HbA1c and/or fasting blood glucose levels. Finally, anti-tuberculosis therapy resulted in significantly diminished levels of cathelicidin, HBD2, granulysin and significantly enhanced levels of HNP1-3 and granulysin in PTB-DM and/or PTB individuals.Therefore, our data demonstrate that PTB-DM is associated with markedly enhanced levels of AMPs and diminished levels of granulysin.

  6. High Quality Virtual Reality for Architectural Exhibitions

    DEFF Research Database (Denmark)

    Kreutzberg, Anette

    2016-01-01

    This paper will summarise the findings from creating and implementing a visually high quality Virtual Reality (VR) experiment as part of an international architecture exhibition. It was the aim to represent the architectural spatial qualities as well as the atmosphere created from combining natural...... and artificial lighting in a prominent not yet built project. The outcome is twofold: Findings concerning the integration of VR in an exhibition space and findings concerning the experience of the virtual space itself. In the exhibition, an important aspect was the unmanned exhibition space, requiring the VR...... and quantitative methods at two different occasions and setups after the exhibition, both showing a high degree of immersion and experience of reality....

  7. The Culture of Exhibitions and Conservation

    Directory of Open Access Journals (Sweden)

    Dimitrios Doumas

    2013-11-01

    Full Text Available The article reflects on temporary exhibitions from a theoretical as well as practical perspective. Regarded as a particularly effective mass-communication medium, exhibitions have a dual nature: they are scholarly undertakings, bringing off a curator’s vision and, simultaneously, they are projects with economic implications that need to be well managed and administered. The role of conservation in the making of temporary exhibitions, either in-house or touring, is here discussed in relation to how work is planned and prioritized as well as how time is managed and staff is allocated. Reference to weaknesses that lessen the crucial input of conservation in the decision-making process is also made. Much of the debate, which focuses on art exhibitions, concerns practicalities encountered in a private museum that extend from the very early stages of selecting objects for display to the mounting of an exhibition.

  8. Holland at CERN – Industrial exhibition

    CERN Multimedia

    GS Department

    2010-01-01

    Sponsored by EVD, an agency of the Dutch Ministry of the Economy From 8 to 11 November 2010 Industrial Exhibition Administration Building Bldg. 61 9-00 - 17-30 Twenty seven companies will present their latest technology at the industrial exhibition "Holland at CERN". Dutch industry will exhibit products and technologies which are related to the field of particle physics. Individual interviews will take place directly at the stands in the Main Building. The firms will contact relevant users/technicians but any user wishing to make contact with a particular firm is welcome to use the contact details which are available from each departmental secretariat or at the following URL: http://gs-dep.web.cern.ch/gs-dep/groups/sem/ls/Industrial_Exhibitions.htm#Industrial_exhibitions You will find the list of exhibitors below. LIST OF EXHIBITORS: Schelde Exotech Vernooy BV Triumph Group INCAA Computers DeMaCo Holland bv TNO Science & Industry Janssen Precision Engi...

  9. Museum Exhibitions: Optimizing Development Using Evaluation

    Science.gov (United States)

    Dusenbery, P. B.

    2002-12-01

    The Space Science Institute (SSI) of Boulder, Colorado, has recently developed two museum exhibits called the Space Weather Center and MarsQuest. It is currently planning to develop a third exhibit called InterActive Earth. The Space Weather Center was developed in partnership with various research missions at NASA's Goddard Space Flight Center. The development of these exhibitions included a comprehensive evaluation plan. I will report on the important role evaluation plays in exhibit design and development using MarsQuest and InterActive Earth as models. The centerpiece of SSI's Mars Education Program is the 5,000-square-foot traveling exhibition, MarsQuest: Exploring the Red Planet, which was developed with support from the National Science Foundation (NSF), NASA, and several corporate donors. The MarsQuest exhibit is nearing the end of a highly successful, fully-booked three-year tour. The Institute plans to send an enhanced and updated MarsQuest on a second three-year tour and is also developing Destination: Mars, a mini-version of MarsQuest designed for smaller venues. They are designed to inspire and empower participants to extend the excitement and science content of the exhibitions into classrooms and museum-based education programs in an ongoing fashion. The centerpiece of the InterActive Earth project is a traveling exhibit that will cover about 4,000 square feet. The major goal of the proposed exhibit is to introduce students and the public to the complexity of the interconnections in the Earth system, and thereby, to inspire them to better understand planet Earth. Evaluation must be an integral part of the exhibition development process. For MarsQuest, a 3-phase evaluation (front end, formative and summative) was conducted by Randi Korn and Associates in close association with the development team. Sampling procedures for all three evaluation phases ensured the participation of all audiences, including family groups, students, and adults. Each phase of

  10. A mini-exhibition with maximum content

    CERN Multimedia

    Laëtitia Pedroso

    2011-01-01

    The University of Budapest has been hosting a CERN mini-exhibition since 8 May. While smaller than the main travelling exhibition it has a number of major advantages: its compact design alleviates transport difficulties and makes it easier to find suitable venues in the Member States. Its content can be updated almost instantaneously and it will become even more interactive and high-tech as time goes by.   The exhibition on display in Budapest. The purpose of CERN's new mini-exhibition is to be more interactive and easier to install. Due to its size, the main travelling exhibition cannot be moved around quickly, which is why it stays in the same country for 4 to 6 months. But this means a long waiting list for the other Member States. To solve this problem, the Education Group has designed a new exhibition, which is smaller and thus easier to install. Smaller maybe, but no less rich in content, as the new exhibition conveys exactly the same messages as its larger counterpart. However, in the slimm...

  11. France at CERN – Industrial exhibition

    CERN Multimedia

    FP Department

    2012-01-01

    Industrial Exhibition Administration Building Bldg 61 – 1st Floor Tuesday 27 March: 9 a.m. – 5.30 p.m. Wednesday 28 March: 9 a.m. – 2 p.m.   About thirty French companies are presenting their latest technological advances during the industrial exhibition "France at CERN", featuring products and technologies specifically related to CERN activities. Individual B2B meetings can be organized with the sales and technical representatives of participating firms and will take place at either the companies’ exhibition stands or in conference rooms in the Main Building. Individuals wishing to make contact with one or more companies must use the contact details available from each secretariat of department or by using this link. B2B meetings will be coordinated by UBIFRANCE. You will also find the list of exhibiting and participating companies online here. This event is sponsored by the French subsidiary of RS Components, the most important distri...

  12. 18 CFR 32.2 - Required exhibits.

    Science.gov (United States)

    2010-04-01

    ... of operating such facilities. Exhibit B. A general or key map on a scale not greater than 20 miles to... facilities used for the generation and transmission of electric energy, indicating on said map the points...

  13. Communicating Complex Sciences by Means of Exhibitions

    Science.gov (United States)

    Schneider, S.

    2011-12-01

    Earth Sciences will have to take over the leading role in global sustainable policy and in discussions about climate change. Efforts to raise attention within the politically responsible communities as well as in the public are getting more and more support by executive and advisory boards all over the world. But how can you successfully communicate complex sciences? For example, to start communication about climate change, the first step is to encourage people to be concerned about climate change. After that, one has to start thinking about how to present data and how to include the presented data into an unprejudiced context. Therefore, the communication toolbox offers various methods to reach diverse audiences. The R&D programme GEOTECHNOLOGIEN conducts roving exhibitions as one of its most successful communication tools. With roving exhibitions GEOTECHNOLOGIEN is able to get in touch with different audiences at once. The main purpose and theme of these exhibitions is to convey the everyday means of climate change to the visitors. It is within the responsibility of science to communicate the effects of a phenomenon like climate change as well as the impact of research results to the everyday life of people. Currently, a GEOTECHNOLOGIEN roving exhibition on remote sensing with satellites deals with various issues of environmental research, including a chapter on climate change. By following the 3M-concept (Meaning - Memorable - Moving), exhibitions allow to connect the visitors daily environment and personal experiences with the presented issues and objects. Therefore, hands-on exhibits, exciting multimedia effects and high-tech artefacts have to be combined with interpretive text elements to highlight the daily significance of the scientific topics and the exhibition theme respectively. To create such an exhibition, strong conceptual planning has to be conducted. This includes the specification of stern financial as well as time wise milestones. In addition

  14. [All-Russian hygienic exhibitions and museums].

    Science.gov (United States)

    Kuzybaeva, M P

    2011-01-01

    The material about the popularization of hygiene and health education in Russia in the second half of the 19th century to early 20th century through exhibition and museum activities has been collected for the first time and analyzed in the paper. The role of scientists and scientific medical societies in this process is noted. The significance of museum and exhibition activities in this area for the development of medical science is defined.

  15. Sex differences in science museum exhibit attraction

    Science.gov (United States)

    Arámbula Greenfield, Teresa

    This study examines the relative attraction of hands-on, interactive science museum exhibits for females and males. Studies have demonstrated that such exhibits can be effective learning experiences for children, with both academic and affective benefits. Other studies have shown that girls and boys do not always experience the same science-related educational opportunities and that, even when they do, they do not necessarily receive the same benefits from them. These early differences can lead to more serious educational and professional disparities later in life. As interactive museum exhibits represent a science experience that is-readily available to both girls and boys, the question arose as to whether they were being used similarly by the two groups as well as by adult women and men. It was found that both girls and boys used all types of exhibits, but that girls were more likely than boys to use puzzles and exhibits focusing on the human body; boys were more likely than girls to use computers and exhibits illustrating physical science principles. However, this was less true of children accompanied by adults (parents) than it was of unaccompanied children on school field trips who roamed the museum more freely.Received: 16 February 1994; Revised: 3 February 1995;

  16. Sensitivity analysis

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/003741.htm Sensitivity analysis To use the sharing features on this page, please enable JavaScript. Sensitivity analysis determines the effectiveness of antibiotics against microorganisms (germs) ...

  17. Increased depressive behaviour in females and heightened corticosterone release in males to swim stress after adolescent social stress in rats.

    Science.gov (United States)

    Mathews, Iva Z; Wilton, Aleena; Styles, Amy; McCormick, Cheryl M

    2008-06-26

    We previously reported that males undergoing chronic social stress (SS) (daily 1h isolation and new cage partner on days 30-45 of age) in adolescence habituated (decreased corticosterone release) to the homotypic stressor, but females did not. Here, we report that adolescent males exposed to chronic social stress had potentiated corticosterone release to a heterotypic stressor (15 min of swim stress) compared to acutely stressed and control males. The three groups of males did not differ in depressive-like behaviour (time spent immobile) during the swim stress. Corticosterone release in socially stressed females was elevated 45 min after the swim stress compared to acutely stressed and control females, and socially stressed females exhibited more depressive behaviour (longer durations of immobility and shorter durations of climbing) than the other females during the swim stress. Separate groups of rats were tested as adults several weeks after the social stress, and there were no group differences in corticosterone release after the swim stress. The only group difference in behaviour among the adults was more time spent climbing in socially stressed males than in controls. Thus, there are sex-specific effects of social stress in adolescence on endocrine responses and depressive behaviour to a heterotypic stressor, but, unlike for anxiety, substantial recovery is evident in adulthood in the absence of intervening stress exposures.

  18. Using Comparative Planetology in Exhibit Development

    Science.gov (United States)

    Dusenbery, P. B.; Harold, J. B.; Morrow, C. A.

    2004-12-01

    It is critically important for the public to better understand the scientific process. Museum exhibitions are an important part of informal science education that can effectively reach public audiences as well as school groups. They provide an important gateway for the public to learn about compelling scientific endeavors. The Space Science Institute (SSI) is a national leader in producing traveling science exhibitions and their associated educational programming (i.e. interactive websites, educator workshops, public talks, instructional materials). The focus of this presentation will be on three of its exhibit projects: MarsQuest (currently on tour), Alien Earths (in fabrication), and Giant Planets (in development). MarsQuest is enabling millions of Americans to share in the excitement of the scientific exploration of Mars and to learn more about their own planet in the process. Alien Earths will bring origins-related research and discoveries to students and the American public. It has four interrelated exhibit areas: Our Place in Space, Star Birth, PlanetQuest, and Search for Life. Exhibit visitors will explore the awesome events surrounding the birth of stars and planets; they will join scientists in the hunt for planets outside our solar system including those that may be in "habitable zones" around other stars; and finally they will be able to learn about how scientists are looking for signs of life beyond Earth. Giant Planets: Exploring the Outer Solar System will take advantage of the excitement generated by the Cassini mission and bring planetary and origins research and discoveries to students and the public. It will be organized around four thematic areas: Our Solar System; Colossal Worlds; Moons, Rings, and Fields; and Make Space for Kids. Giant Planets will open in 2007. This talk will focus on the importance of making Earth comparisons in the conceptual design of each exhibit and will show several examples of how these comparisons were manifested in

  19. Fluoxetine Maintains a State of Heightened Responsiveness to Motor Training Early After Stroke in a Mouse Model.

    Science.gov (United States)

    Ng, Kwan L; Gibson, Ellen M; Hubbard, Robert; Yang, Juemin; Caffo, Brian; O'Brien, Richard J; Krakauer, John W; Zeiler, Steven R

    2015-10-01

    Data from both humans and animal models suggest that most recovery from motor impairment after stroke occurs in a sensitive period that lasts only weeks and is mediated, in part, by an increased responsiveness to training. Here, we used a mouse model of focal cortical stroke to test 2 hypotheses. First, we investigated whether responsiveness to training decreases over time after stroke. Second, we tested whether fluoxetine, which can influence synaptic plasticity and stroke recovery, can prolong the period over which large training-related gains can be elicited after stroke. Mice were trained to perform a skilled prehension task to an asymptotic level of performance after which they underwent stroke induction in the caudal forelimb area. The mice were then retrained after a 1- or 7-day delay with and without fluoxetine. Recovery of prehension after a caudal forelimb area stroke was complete if training was initiated 1 day after stroke but incomplete if it was delayed by 7 days. In contrast, if fluoxetine was administered at 24 hours after stroke, then complete recovery of prehension was observed even with the 7-day training delay. Fluoxetine seemed to mediate its beneficial effect by reducing inhibitory interneuron expression in intact premotor cortex rather than through effects on infarct volume or cell death. There is a gradient of diminishing responsiveness to motor training over the first week after stroke. Fluoxetine can overcome this gradient and maintain maximal levels of responsiveness to training even 7 days after stroke. © 2015 American Heart Association, Inc.

  20. CERN exhibition a big hit in Bulgaria

    CERN Multimedia

    2005-01-01

    The first CERN exhibition in Bulgaria attracted many visitors. In the first ever CERN exhibition to be held in Bulgaria, over 1,400 visitors, many of them students and young physicists, visited the 10-day event in Sofia. The CERN mini-exhibition took place at the National Earth and Mankind Museum between 8 and 17 November. Permanently staffed by young physicists from Sofia University, there were exhibits on display about research activities at CERN, as well as four additional posters describing Bulgaria's participation. The inauguration took place on the morning of 8 November in the presence of the Vice-Minister for Science and Education, Mrs. Vanya Dobreva, and some 200 guests. A series of short speeches were followed by a visit to the exhibition. CERN's representative at the event, Ray Lewis, was then asked by Professor Matey Mateev, President of the Union of Physicists in Bulgaria, to say a few words on behalf of the Organization. Numerous journalists were also present at the inauguration. A painting enti...

  1. Oral drug self-administration in the home cage of mice: alcohol-heightened aggression and inhibition by the 5-HT1B agonist anpirtoline.

    Science.gov (United States)

    Miczek, K A; de Almeida, R M

    2001-10-01

    In order to model heightened aggression after alcohol consumption and to study the inhibitory influence of 5-HT1B receptors on drinking and fighting, an experimental procedure should enable self-administration of precise amounts of alcohol in a limited period of time before an aggressive confrontation. To design a new device that can reinforce operant responding by the delivery of sweet alcohol in the resident mouse home cage, where aggressive behavior toward an intruder can subsequently be examined, and to demonstrate inhibition of alcohol-heightened aggression by 5-HT1B receptor agonist treatment. Within one experimental session, all singly housed CFW male mice (n=26) performed a nose-poke response that was reinforced by 0.05 ml sucrose. Using the sucrose fading technique, eventually the mice consumed a 6% ethanol/4% sucrose solution after each fifth nose poke during daily 15-min experimental sessions. The number of ethanol reinforcements was adjusted so that 0.6, 1.0, 1.7, and 3.0-g/kg doses were consumed in 15 min or less. Assays confirmed blood alcohol levels at 68.1 mg/dl for intake of 1.0 g/kg. After consuming a specific dose of ethanol in the form of a fixed number of response-dependent deliveries, the response panel was removed from the home cage and, 15 min later, the resident confronted a male intruder. Anpirtoline was administered either before alcohol self-administration or before the aggressive confrontation. After being reinforced with 1.0 g/kg or 1.7 g/kg sweet ethanol, the mice significantly increased attack and threat behavior relative to their aggressive behavior following sucrose or water consumption only. Treatment with the 5-HT1B receptor agonist anpirtoline (0.125, 0.25, 0.5 mg/kg, i.p.) before the confrontation decreased alcohol-heightened aggression and species-typical aggression in the absence of changes in other elements of the behavioral repertoire. Anpirtoline affected ethanol-reinforced behavior only at doses that were 5-10 times

  2. The exploration of the exhibition informatization

    Science.gov (United States)

    Zhang, Jiankang

    2017-06-01

    The construction and management of exhibition informatization is the main task and choke point during the process of Chinese exhibition industry’s transformation and promotion. There are three key points expected to realize a breakthrough during the construction of Chinese exhibition informatization, and the three aspects respectively are adopting service outsourcing to construct and maintain the database, adopting advanced chest card technology to collect various kinds of information, developing statistics analysis to maintain good cutomer relations. The success of Chinese exhibition informatization mainly calls for mature suppliers who can provide construction and maintenance of database, the proven technology, a sense of data security, advanced chest card technology, the ability of data mining and analysis and the ability to improve the exhibition service basing on the commercial information got from the data analysis. Several data security measures are expected to apply during the process of system developing, including the measures of the terminal data security, the internet data security, the media data security, the storage data security and the application data security. The informatization of this process is based on the chest card designing. At present, there are several types of chest card technology: bar code chest card; two-dimension code card; magnetic stripe chest card; smart-chip chest card. The information got from the exhibition data will help the organizers to make relevant service strategies, quantify the accumulated indexes of the customers, and improve the level of the customer’s satisfaction and loyalty, what’s more, the information can also provide more additional services like the commercial trips, VIP ceremonial reception.

  3. Exhibits in libraries a practical guide

    CERN Document Server

    Brown, Mary E

    2005-01-01

    "Ccomprehensive...detailed"--Booklist; "thoroughly reseached...highly recommended"--Journal of Access Services. Library exhibits are more than entertainment for patrons. They can inspire and educate, stimulate an interest that can be explored in a book, or attract visitors who otherwise wouldn't stop by. Displays are also an opportunity for a library to put its creative foot forward or help patrons navigate the facility itself. This comprehensive "how-to" includes everything a librarian or staff member needs to know to put on an exhibit, from hatching ideas to evaluating the end result. Illustrations and photographs show practical methods of planning, labeling and displaying.

  4. Comic Strips to Accompany Science Museum Exhibits

    Science.gov (United States)

    Chung, Beom Sun; Park, Eun-mi; Kim, Sang-Hee; Cho, Sook-kyoung; Chung, Min Suk

    2016-01-01

    Science museums make the effort to create exhibits with amusing explanations. However, existing explanation signs with lengthy text are not appealing, and as such, visitors do not pay attention to them. In contrast, conspicuous comic strips composed of simple drawings and humors can attract science museum visitors. This study attempted to reveal…

  5. Do cylinders exhibit a cubatic phase?

    NARCIS (Netherlands)

    Blaak, R.; Frenkel, D.; Mulder, B.M.

    1999-01-01

    We investigate the possibility that freely rotating cylinders with an aspect ratio L/D = 0.9 exhibit a cubatic phase similar to the one found for a system of cut spheres. We present theoretical arguments why a cubatic phase might occur in this particular system. Monte Carlo simulations do not

  6. Synchronization in multicell systems exhibiting dynamic plasticity

    Indian Academy of Sciences (India)

    Using two perturbation analyses, we also show that this emergent synchronized dynamical state is fairly robust under external perturbations. Thus, the inherent plasticity in the oscillatory phenotypes in these model cells may get suppressed to exhibit collective dynamics of a single type in a multicell system, but ...

  7. CERN exhibition wins yet another design prize

    CERN Multimedia

    Joannah Caborn Wengler

    2012-01-01

    The “Universe of Particles” exhibition in CERN’s Globe wins the silver design prize from the German direct business communications association FAMAB.   Not only do tens of thousands of people visit the “Universe of Particles” exhibition each year, but juries for design prizes are crossing its threshold more and more frequently too. In 2011 alone it claimed 8 awards, including winning outright the 2011 Annual Multimedia award, the iF Communication Design for Corporate Architecture award and the Modern Decoration Media award (the Bulletin already reported on some of these in July 2011). The FAMAB award is the latest to join the prestigious list. The jury of FAMAB’s “ADAM 2011” award was particularly impressed by the hands-on nature of the exhibition, which encourages visitors to get interested in science. They also appreciated the way that the space in the Globe is not just a container for the exhibits, but itself ...

  8. 18 CFR 153.8 - Required exhibits.

    Science.gov (United States)

    2010-04-01

    ... facilities in the United States and Canada or Mexico; (5) Exhibit E. If the proposal is to import or export..., OR MODIFY FACILITIES USED FOR THE EXPORT OR IMPORT OF NATURAL GAS Application Under Section 3 § 153.8... for the export or the import of natural gas is within the authorized powers of applicant, that...

  9. The shape of change in perceived stress negative affect and stress sensitivity during mindfulness based stress reduction

    NARCIS (Netherlands)

    Snippe, E.; Dziak, J.J.; Lanza, S.T.; Nyklicek, I.; Wichers, M.

    2017-01-01

    Both daily stress and the tendency to react to stress with heightened levels of negative affect (i.e., stress sensitivity) are important vulnerability factors for adverse mental health outcomes. Mindfulness-based stress reduction (MBSR) may help to reduce perceived daily stress and stress

  10. The shape of change in perceived stress and stress-sensitivity over the course of mindfulness-based stress reduction

    NARCIS (Netherlands)

    Snippe, E.; Dziak, J.J.; Lanza, S.T.; Nyklicek, I.; Wichers, M.

    2017-01-01

    Both daily stress and the tendency to react to stress with heightened levels of negative affect (i.e., stress sensitivity) are important vulnerability factors for adverse mental health outcomes. Mindfulness-based stress reduction (MBSR) may help to reduce perceived daily stress and stress

  11. The Shape of Change in Perceived Stress, Negative Affect, and Stress Sensitivity During Mindfulness-Based Stress Reduction

    NARCIS (Netherlands)

    Snippe, Evelien; Dziak, John J.; Lanza, Stephanie T.; Nykliek, Ivan; Wichers, Marieke

    Both daily stress and the tendency to react to stress with heightened levels of negative affect (i.e., stress sensitivity) are important vulnerability factors for adverse mental health outcomes. Mindfulness-based stress reduction (MBSR) may help to reduce perceived daily stress and stress

  12. The shape of change in perceived stress, negative affect, and stress sensitivity during mindfulness based stress reduction

    NARCIS (Netherlands)

    Snippe, E.; Dziak, J.J.; Lanza, S.T.; Nyklicek, I.; Wichers, M.

    2017-01-01

    Both daily stress and the tendency to react to stress with heightened levels of negative affect (i.e., stress sensitivity) are important vulnerability factors for adverse mental health outcomes. Mindfulness-based stress reduction (MBSR) may help to reduce perceived daily stress and stress

  13. Joint Armaments Conference, Exhibition and Firing Demonstration

    Science.gov (United States)

    2010-05-20

    water Initially Prepared in 1910 by Roth and Hoffman Has found use as primer sensitizer as it is “non-toxic” ( mercury fulminate ) and non-corrosive...environmentally friendly products. EPA (TSCA) – frowns on the use of lead, mercury , barium and other heavy metals as well as perchlorate. National

  14. LHC INAUGURATION, LHC Fest highlights: exhibition time!

    CERN Multimedia

    2008-01-01

    David Gross, one of the twenty-one Nobel Laureates who have participated in the project.Tuesday 21 October 2008 Accelerating Nobels Colliding Charm, Atomic Cuisine, The Good Anomaly, A Quark Somewhere on the White Paper, Wire Proliferation, A Tale of Two Liquids … these are just some of the titles given to artworks by Physics Nobel Laureates who agreed to make drawings of their prize-winning discoveries (more or less reluctantly) during a special photo session. Science photographer Volker Steger made portraits of Physics Nobel Laureates and before the photo sessions he asked them to make a drawing of their most important discovery. The result is "Accelerating Nobels", an exhibition that combines unusual portraits of and original drawings by twenty-one Nobel laureates in physics whose work is closely related to CERN and the LHC. This exhibition will be one of the highlights of the LHC celebrations on 21 October in the SM18 hall b...

  15. Exhibition: Women and Sciences by Fiami

    CERN Multimedia

    Globe Info

    2011-01-01

    The 19-panel exhibition is on display at CERN's Microcosm from Monday to Saturday from 10.00 a.m. to 5.00 p.m.   Marie Curie won the Nobel Prize for Chemistry one hundred years ago. She is the only woman ever to win two Nobel Prizes, which is a testament to her remarkable work. But throughout history, women have played a role in science either in their own right or alongside other scientists. In this special exhibition, the comic-strip artist Fiami takes a look back at the relationship between women and science through his portraits of Mileva Einstein, Marie-Anne Lavoisier and, of course, Marie Curie. Fiami has recently published an entire album devoted to Marie Curie. Texts in French All ages - Entrance free Femmes et Sciences is on display at Microcosm: From Wednesday 21 September 2011 to Tuesday 20 December 2011.

  16. The palaeontological exhibition: a venue for dialogue.

    Science.gov (United States)

    Murriello, Sandra

    2015-01-01

    Understanding the dialogue between museums and their visitors enables museums to subsist, undergo transformations and become consolidated as socially valued cultural venues. The Museo de La Plata (Argentina) was created in the late nineteenth century as a natural history museum, and this study shows that currently the museum is valued socially as a venue for family leisure and education, at which people make sense to the objects exhibited through characteristics conferred upon them by both the institution and the visitor. Nevertheless, such dialogue is somehow affected by the museographic proposal and the public interpretation of the institutional narrative, which could be analysed within the frame of contextual learning. As a consequence, the evolutionary idea that the museum aims to communicate is distorted by the public. This article highlights the importance of considering the visitors' interpretations when planning museum exhibitions, a perspective that has been rather absent in the Argentinian museums. © The Author(s) 2014.

  17. Blebbishields and mitotic cells exhibit robust macropinocytosis.

    Science.gov (United States)

    Jinesh, Goodwin G; Kamat, Ashish M

    2017-03-01

    Cancer stem cells can survive and undergo transformation after apoptosis by initiating robust endocytosis. Endocytosis in-turn drives formation of serpentine filopodia, which promote construction of blebbishields from apoptotic bodies. However, the status and role of macropinocytosis in blebbishields is not known. Here, we show by scanning electron microscopy and by macropinocytosis assays that blebbishields exhibit robust macropinocytosis. Inhibiting dynamin-mediated endocytosis does not affect macropinocytosis in blebbishields or in mitotic cells. In addition, inhibiting macropinocytosis did not inhibit construction of blebbishields from apoptotic bodies. Thus, although apoptotic cancer stem cells exhibit robust macropinocytosis, macropinocytosis is not essential to generate blebbishields, although it may play other roles in blebbishield biology. © 2016 BioFactors, 43(2):181-186, 2017. © 2016 International Union of Biochemistry and Molecular Biology.

  18. CERN's new microcosm exhibition is now open

    CERN Multimedia

    2016-01-01

    After a major revamp in 2015, CERN’s microcosm exhibition is once again open to visitors. The exhibition is free and open to all without reservation and visitors are encouraged to share their #microcosm @CERN experiences on social media. Read more: http://cern.ch/go/7HWC -Producer- CERN Video Productions -Director- Kate Kahle -Camera- indissoluble.com and Julien Ordan -Editor- Julien Ordan -Infography- Daniel Dominguez Noemi Caraban -Music- “Light Years” by Stellardrone http://freemusicarchive.org/music/Ste... You can follow us on: cern.ch youtube.com/cerntv google.com/+CERN facebook.com/cern twitter.com/cern/ linkedin.com/company/cern instagram.com/cern Copyright © 2016 CERN. Terms of use: http://copyright.web.cern.ch/

  19. Exhibition: Life and Achievements of Maria Sklodowska-Curie

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    The exhibition "Life and Achievements of Maria Sklodowska-Curie” will be held at CERN (Pas Perdus Corridor, 1st floor, building 61) from the 8 to 24 March.   It is organised under the auspices of the Ambassador R. Henczel, Permanent Representative of the Republic of Poland to the UN Office at Geneva to celebrate the 100th anniversary of the Nobel Prize in Chemistry given to Maria Sklodowska-Curie. The exhibition is also one of the events celebrating the 20th anniversary of Poland joining CERN as a Member State. Maria Sklodowska-Curie, Nobel Prize winner both in physics and chemistry, is one of the greatest scientists of Polish origin. The exhibition, consisting of 20 posters, presents her not only as a brilliant scientist, but also an exceptional woman of great heart, character and organizational talents, sensitive to contemporary problems. The authors are Mrs M. Sobieszczak-Marciniak, the director of the Maria Sklodowska-Curie Museum in Warsaw and Mrs H. Krajewska, the direct...

  20. Craft Generation - Exhibition / Symposium / Workshops / Tour

    OpenAIRE

    Lamb, Andrew

    2015-01-01

    2014 saw a national programme celebrating 25 years of contemporary visual art under the banner of GENERATION.  \\ud \\ud FCA&C (Fife Contemporary Art & Craft) wanted to recognise and celebrate the achievements of Contemporary Scottish Craft practitioners, highlighting creativity, skills, and the career of key individuals as well as and the continuation and renewal of skill and Craftsmanship. \\ud \\ud Established craft artists will exhibited along with artists from the following generation whose ...

  1. PLATE: Product Lifetimes And The Environment Exhibition

    OpenAIRE

    Hanson, Maria

    2015-01-01

    The PLATE (Product Lifetimes And The Environment) Exhibition explored critical themes related to how long products last in contemporary society. The topic of product longevity is examined in innovative ways through prototypes, objects, artefacts, posters, photographs and films produced by designers, social businesses, artists, researchers, lecturers and students.\\ud \\ud Featuring household products, furniture, lighting, fashion, jewellery and artworks, this collection of visual work embraced ...

  2. Naval Meteorology and Oceanography Command exhibit entrance

    Science.gov (United States)

    2000-01-01

    StenniSphere at NASA's John C. Stennis Space Center in Hancock County, Miss., invites visitors to discover why America comes to Stennis Space Center before going into space. Designed to entertain while educating, StenniSphere includes informative displays and exhibits from NASA and other agencies located at Stennis, such as this one from the Naval Meteorology and Oceanography Command. Visitors can 'travel' three-dimensionally under the sea and check on the weather back home in the Weather Center.

  3. Naval Meteorology and Oceanography Command exhibit

    Science.gov (United States)

    2000-01-01

    Designed to entertain while educating, StenniSphere at the John C. Stennis Space Center in Hancock County, Miss., includes informative displays and exhibits from NASA and other agencies located at Stennis, such as this one from the Naval Meteorology and Oceanography Command. Visitors can 'travel' three-dimensionally under the sea and check on the weather back home in the Weather Center. StenniSphere is open free of charge from 9 a.m. to 5 p.m. daily.

  4. Exhibition: Dialogue between Science and religion

    CERN Multimedia

    2001-01-01

    Can the theory of the Big Bang reached by physicists and the concept of creation beloved of religion ever be reconciled? The two approaches have at least one point in common: they do not provide a final answer to the mysteries of the birth of the Universe. And this means that dialogue is alays possible between the two. It is to show the potential of such an exchange that Geneva's Société Evangélique organization is opening an exhibition under the title 'Big Bang and Creation', at the Planète Charmilles shopping centre, to run from 19 to 30 March. View of the 'Big Bang and Creation' exhibition. The exhibition is divided into three sections, showing the views of the scientist and those of the believer without setting them up in opposition to one another. In the first section, under a representation of the vault of heaven, the visitor will discover the different ideas explaining the birth of the Universe: Genesis and the Big Bang, and the different dominant theories ...

  5. Bumblebees exhibit the memory spacing effect

    Science.gov (United States)

    Toda, Nicholas R. T.; Song, Jeremy; Nieh, James C.

    2009-10-01

    Associative learning is key to how bees recognize and return to rewarding floral resources. It thus plays a major role in pollinator floral constancy and plant gene flow. Honeybees are the primary model for pollinator associative learning, but bumblebees play an important ecological role in a wider range of habitats, and their associative learning abilities are less well understood. We assayed learning with the proboscis extension reflex (PER), using a novel method for restraining bees (capsules) designed to improve bumblebee learning. We present the first results demonstrating that bumblebees exhibit the memory spacing effect. They improve their associative learning of odor and nectar reward by exhibiting increased memory acquisition, a component of long-term memory formation, when the time interval between rewarding trials is increased. Bombus impatiens forager memory acquisition (average discrimination index values) improved by 129% and 65% at inter-trial intervals (ITI) of 5 and 3 min, respectively, as compared to an ITI of 1 min. Memory acquisition rate also increased with increasing ITI. Encapsulation significantly increases olfactory memory acquisition. Ten times more foragers exhibited at least one PER response during training in capsules as compared to traditional PER harnesses. Thus, a novel conditioning assay, encapsulation, enabled us to improve bumblebee-learning acquisition and demonstrate that spaced learning results in better memory consolidation. Such spaced learning likely plays a role in forming long-term memories of rewarding floral resources.

  6. Exhibition: Linus Pauling and the Twentieth Century

    CERN Multimedia

    2003-01-01

    On April 28 the exhibit Linus Pauling and the Twentieth Century organised by UNIDIR (United Nations Institute for Disarmament Research) and SGI (Soka Gakkai International) as well as with the contributions of CERN and the University of Geneva, opened at the United Nations Office of Geneva. Linus Pauling is the only person to date to have won two unshared Nobel Prizes: Chemistry in 1954 and Peace in 1962. The first was awarded for his landmark research on the nature of the chemical bond and its application in understanding the structure of complex substances. The second one acknowledged his courageous protest against atmospheric nuclear testing and his championship of international peace. The exhibit, for audience of all ages, traces seven decades of Linus Pauling's life and influence on the 20th century. Before starting its European tour at the UNESCO headquarters in Paris, the exhibit opened in 1998 in San Francisco and then travelled within the United-States and to Japan with an attendance of more than one...

  7. Exhibition: Linus Pauling and the Twentieth Century

    CERN Multimedia

    2003-01-01

    On April 28 the exhibit Linus Pauling and the Twentieth Century organised by UNIDIR (United Nations Institute for Disarmament Research) and SGI (Soka Gakkai International) as well as with the contributions of CERN and the University of Geneva, opens at the United Nations Office of Geneva. Linus Pauling is the only person to date to have won two unshared Nobel Prizes: Chemistry in 1954 and Peace in 1962. The first was awarded for his landmark research on the nature of the chemical bond and its application in understanding the structure of complex substances. The second one acknowledged his courageous protest against atmospheric nuclear testing and his championship of international peace. The exhibit, for all ages' audiences, traces seven decades of Linus Pauling's life and influence on the 20th century. Before starting its European tour at the UNESCO headquarters in Paris, the exhibit opened in 1998 in San Francisco and then travelled within the United-States and to Japan with an attendance of more than one m...

  8. Lower neighborhood quality in adolescence predicts higher mesolimbic sensitivity to reward anticipation in adulthood

    Directory of Open Access Journals (Sweden)

    Marlen Z. Gonzalez

    2016-12-01

    Full Text Available Life history theory suggests that adult reward sensitivity should be best explained by childhood, but not current, socioeconomic conditions. In this functional magnetic resonance imaging (fMRI study, 83 participants from a larger longitudinal sample completed the monetary incentive delay (MID task in adulthood (∼25 years old. Parent-reports of neighborhood quality and parental SES were collected when participants were 13 years of age. Current income level was collected concurrently with scanning. Lower adolescent neighborhood quality, but neither lower current income nor parental SES, was associated with heightened sensitivity to the anticipation of monetary gain in putative mesolimbic reward areas. Lower adolescent neighborhood quality was also associated with heightened sensitivity to the anticipation of monetary loss activation in visuo-motor areas. Lower current income was associated with heightened sensitivity to anticipated loss in occipital areas and the operculum. We tested whether externalizing behaviors in childhood or adulthood could better account for neighborhood quality findings, but they did not. Findings suggest that neighborhood ecology in adolescence is associated with greater neural reward sensitivity in adulthood above the influence of parental SES or current income and not mediated through impulsivity and externalizing behaviors.

  9. Climate Sensitivity

    Energy Technology Data Exchange (ETDEWEB)

    Lindzen, Richard [M.I.T.

    2011-11-09

    Warming observed thus far is entirely consistent with low climate sensitivity. However, the result is ambiguous because the sources of climate change are numerous and poorly specified. Model predictions of substantial warming aredependent on positive feedbacks associated with upper level water vapor and clouds, but models are notably inadequate in dealing with clouds and the impacts of clouds and water vapor are intimately intertwined. Various approaches to measuring sensitivity based on the physics of the feedbacks will be described. The results thus far point to negative feedbacks. Problems with these approaches as well as problems with the concept of climate sensitivity will be described.

  10. Gluten Sensitivity

    Science.gov (United States)

    Gluten is a protein found in wheat, rye, and barley. It is found mainly in foods but ... products like medicines, vitamins, and supplements. People with gluten sensitivity have problems with gluten. It is different ...

  11. Mars in their eyes - a cartoon exhibition

    Science.gov (United States)

    Pillinger, Pi.

    Recently a collection of 120 cartoons which tell the story of Mars exploration and scientific discovery, past, present and future, was held in London. We discuss the aims of the exhibition, to what extent we believe the original aims were met and report on additional outreach opportunities resulting from the project. The overriding aim was to capitalise on the popular appeal of accessible art - most people admit to enjoying cartoons. This was strengthened by hanging the originals of cartoons which had, mostly, been published in newspapers and magazines in a wide selection of countries. The provenances served to indicate the attraction of Mars to a wide public. We were fortunate to work with the Cartoon Art Trust of the UK who was in the process of relocating to new premises and opening as The Cartoon Museum, in the tourist area of Bloomsbury, central London, very close to the British Museum. "Mars in their Eyes" ran for 10 weeks during April to July 2006; immediately following which a selection of the cartoons was displayed at the week-long Royal Society Summer Exhibition. We explore the differences between the two exhibitions and comment on the various audience responses. We use this comparison to discuss whether a project which is primarily art can be extended to explain science. Does the coupling merely result in dumbing-down of both cultures or is there a true synergy? The experience has led us to coin the phrase "extreme outreach". Projects which are as ambitious as "Mars in their Eyes", without the security of a safe, captive audience, for example at a Science Centre, must be judged by different criteria. Indeed if the project does not meet comparable targets like large visitor numbers, then the honest evaluation of such details can only inform future activities and must not be reflected in the future funding of only "safe" outreach activities.

  12. How do exhibition visitors describe aesthetic qualities?

    DEFF Research Database (Denmark)

    Thomsen, Bente Dahl; Ravn, Anders Peter

    2007-01-01

    In this investigation, visitors to an art and design exhibition have used an interactive computer program to express the qualities they consider important for an art or design object (artefact). They have then used the program with their individually selected qualities to assess the artefacts....... In this article, we present the experiment and its results. They indicate that with such a setting it is relatively easy to reach a degree of consensus about criteria. Such an interactive program can therefore be very useful, for instance when choosing among design proposals or when selecting artefacts...

  13. Applied Gamification in Self-guided Exhibitions

    DEFF Research Database (Denmark)

    Vistisen, Peter; Selvadurai, Vashanth; Krishnasamy, Rameshnath Kala

    2018-01-01

    This paper contributes to the current understanding of applied digital gamification by providing insights from two design cases from the Danish aqua zoo, the North Sea Oceanarium, concerned with self-facilitated exhibitions. Grounded in a short review of the current state of art, we provide two...... of applied gamification research. Specifically, the cases provide insights to the challenge of on-boarding visitors into participating and using the designed products during their visit. In both cases, providing certain incentives for using the app or participating in the Instagram challenge, seemed...

  14. Beta-blocker Therapy and Clinical Outcomes in Patients with Moderate COPD and Heightened Cardiovascular Risk: An Observational Sub-study of SUMMIT.

    Science.gov (United States)

    Dransfield, Mark T; McAllister, David A; Anderson, Julie A; Brook, Robert D; Calverley, Peter M A; Celli, Bartolome R; Crim, Courtney; Gallot, Natacha; Martinez, Fernando J; Scanlon, Paul D; Yates, Julie; Vestbo, Jørgen; Newby, David E

    2018-02-06

    Cardiovascular disease is a common comorbidity in patients with chronic obstructive pulmonary disease (COPD). Although beta-blockers can be used safely in COPD, concerns remain regarding safety and efficacy interactions in patients using concomitant inhaled long-acting beta-agonists. To compare the differential effects of long-acting beta agonist or inhaled corticosteroid use on clinical outcomes in patients with heightened cardiovascular risk treated and not treated with beta-blockers. We examined data from 16,485 participants in the Study to Understand Mortality and MorbidITy in COPD (SUMMIT) who were randomized to once daily inhaled fluticasone furoate (FF), vilanterol (VI), their combination (FF/VI), or placebo and examined the associations between treatment allocation and lung function, COPD exacerbations, cardiovascular events, and all-cause mortality stratified by baseline beta-blocker therapy. Baseline beta-blocker therapy was used by 31% (n=5,159) of SUMMIT participants. There was no evidence of an interaction between baseline beta-blocker therapy and the association between inhaled treatments and FEV1 at 3 months (p=0.27), 6 months (p=0.14), or 12 months (p=0.33). The placebo-adjusted mean difference in post-bronchodilator FEV1 at 3 months in the VI alone group was 58 mL [95% confidence interval (CI) 38, 78] in those taking baseline beta-blocker therapy, and 51 mL [95%CI 38, 65], in those not taking baseline beta-blocker therapy. The placebo-adjusted mean difference in post-bronchodilator FEV1 at 3 months in the FF/VI group was 85 mL [95%CI 65, 105] in those taking baseline beta-blocker therapy, and 68 mL [95%CI 54, 82] in those not taking baseline beta-blocker therapy. Overall, there was no evidence of interactions by randomized treatment, including VI alone or in combination with FF, for COPD exacerbations (p=0.18), cardiovascular composite events (p=0.33), and all-cause mortality (p=0.41). There is no evidence to suggest that baseline beta

  15. Children's drawings exhibited in the Globe

    CERN Multimedia

    Elizabeth Roe

    2010-01-01

    "Draw Me A Physicist" has been a success. Members of the public visiting the exhibition in the Globe of Science and Innovation have praised the scientific and creative balance the children of neighbouring France and the Canton of Geneva have obtained through their visit to CERN.   The Draw Me a Physicist exhibition in the Globe For a six-month period 9 to 11-year olds from the Pays de Gex, Meyrin, Satigny and Vernier have been able to enjoy a balance between science and art, through drawing and defining their interpretations of a physicist. In May, eight pairs of drawings from each participating class were selected by the schools to be displayed on the second floor of the Globe. Since the images have been put up, the viewers have enjoyed the contrast between the "before" pictures of vibrant Albert Einsteins to the "after" pictures of casual people sitting in an office. The large room in the Globe has been transformed from a hollow shell int...

  16. A metafluid exhibiting strong optical magnetism.

    Science.gov (United States)

    Sheikholeslami, Sassan N; Alaeian, Hadiseh; Koh, Ai Leen; Dionne, Jennifer A

    2013-09-11

    Advances in the field of metamaterials have enabled unprecedented control of light-matter interactions. Metamaterial constituents support high-frequency electric and magnetic dipoles, which can be used as building blocks for new materials capable of negative refraction, electromagnetic cloaking, strong visible-frequency circular dichroism, and enhancing magnetic or chiral transitions in ions and molecules. While all metamaterials to date have existed in the solid-state, considerable interest has emerged in designing a colloidal metamaterial or "metafluid". Such metafluids would combine the advantages of solution-based processing with facile integration into conventional optical components. Here we demonstrate the colloidal synthesis of an isotropic metafluid that exhibits a strong magnetic response at visible frequencies. Protein-antibody interactions are used to direct the solution-phase self-assembly of discrete metamolecules comprised of silver nanoparticles tightly packed around a single dielectric core. The electric and magnetic response of individual metamolecules and the bulk metamaterial solution are directly probed with optical scattering and spectroscopy. Effective medium calculations indicate that the bulk metamaterial exhibits a negative effective permeability and a negative refractive index at modest fill factors. This metafluid can be synthesized in large-quantity and high-quality and may accelerate development of advanced nanophotonic and metamaterial devices.

  17. Radiation-related information at science exhibitions

    Energy Technology Data Exchange (ETDEWEB)

    Bannai, Tadaaki [Inst. for Environmental Sciences, Rokkasho, Aomori (Japan)

    1999-09-01

    The aim of the present report was to promote an efficient utilization of science museums providing with educational information concerning radiations. Investigations were made on radiation-related materials exhibited at 38 museums including PR event sites between April 1996 and July 1998 mainly located on Kanto and Tohoku area in Japan. The investigation concerned as to whether the displays on radiation-related material (cosmic rays, X-rays, etc) existed or not, and as to the background of the display as well. As the result, 14 locations had no relevant displays, 10 of them not having things about atomic energy at all. The locations belonging to electricity company mostly had displays related to radiations and atomic energy power generation. A spark chamber was exhibited at 9 locations and a cloud chamber at 3 locations, but only one location among them displayed both. Displays on the actual use of X-radiation were found at 4 locations. Needs to prepare further improved displays exist at the sites visited. (S. Ohno)

  18. CERN Inspires Art in Major New Exhibition

    CERN Multimedia

    2001-01-01

    Signatures of the Invisible, an exhibition inspired by CERN, opened at the Atlantis Gallery in London on Thursday, 1 March before going on a world tour. The fruit of a close collaboration between CERN and the London Institute, the exhibition brings together works from many leading European contemporary artists. White wooden boxes on a grey floor... the lids opened, unveiling brilliant white light from a bunch of optical fibres carefully stuck together in the shape of a square. Another holds a treasure of lead glass surrounded by enigmatic black mirrors. What's it all about? Signatures of the Invisible, that's what, a joint project organised by the London Institute, one of the world's largest college of art, and our Laboratory. Damien Foresy from the EST workshop putting finishing touches to the spinning tops of French artist Jérôme Basserode. Monica Sand's boxes are just one of the many works based around materials used in particle detection at CERN that was admired at the opening o...

  19. Heightening Grammatical Awareness in English

    Science.gov (United States)

    Sert, Olcay

    2006-01-01

    This article discusses a student project which helps ELT (English Language Teaching) students develop their grammatical awareness, as well as linguistic competence and performance at upper-intermediate or advanced levels. Encouraging students to carry out research on English grammar, collecting data, evaluating structures of language in use,…

  20. Application of an imaging system to a museum exhibition for developing interactive exhibitions

    Science.gov (United States)

    Miyata, Kimiyoshi; Inoue, Yuka; Takiguchi, Takahiro; Tsumura, Norimichi; Nakaguchi, Toshiya; Miyake, Yoichi

    2009-10-01

    In the National Museum of Japanese History, 215,759 artifacts are stored and used for research and exhibitions. In museums, due to the limitation of space in the galleries, a guidance system is required to satisfy visitors' needs and to enhance their understanding of the artifacts. We introduce one exhibition using imaging technology to improve visitors' understanding of a kimono (traditional Japanese clothing) exhibition. In the imaging technology introduced, one data projector, one display with touch panel interface, and magnifiers were used as exhibition tools together with a real kimono. The validity of this exhibition method was confirmed by results from a visitors' interview survey. Second, to further develop the interactive guidance system, an augmented reality system that consisted of cooperation between the projector and a digital video camera was also examined. A white paper board in the observer's hand was used as a projection screen and also as an interface to control the images projected on the board. The basic performance of the proposed system was confirmed; however continuous development was necessary for applying the system to actual exhibitions.

  1. Shape-Memory PVDF Exhibiting Switchable Piezoelectricity.

    Science.gov (United States)

    Hoeher, Robin; Raidt, Thomas; Novak, Nikola; Katzenberg, Frank; Tiller, Joerg C

    2015-12-01

    In this study, a material is designed which combines the properties of shape-memory and electroactive polymers. This is achieved by covalent cross-linking of polyvinylidene fluoride. The resulting polymer network exhibits excellent shape-memory properties with a storable strain of 200%, and fixity as well as recovery values of 100%. Programming upon rolling induces the transformation from the nonelectroactive α-phase to the piezoelectric β-phase. The highest β-phase content is found to be 83% for a programming strain of 200% affording a d33 value of -30 pm V(-1). This is in good accordance with literature known values for piezoelectric properties. Thermal triggering this material does not only result in a shape change but also renders the material nonelectroactive. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. FY 2000 research cooperation project on the support for heightening of capability of research institutes; 2000 nendo kenkyu kyoryoku jigyo. Kenkyu kikan noryoku kojo shien

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    For the purpose of supporting the heightening of capability of research institutes in the following 7 countries, China, Thailand, Malaysia, Indonesia, the Philippines, India and Vietnam, exchanges/guidance/training were conducted by sending researchers from Japan and inviting researchers to Japan. Japanese researchers were sent for the following: cleaner technology in fiber dyeing finish (Thailand), 3 cases including the survey of the actual state of underground water pollution caused by harmful pharmaceuticals (the Philippines), 2 cases including the energy recovery in the fiber dyeing industry (Indonesia), making of energy management rules in the industrial field (Malaysia), spread of the photovoltaic power generation to areas where there is no electricity service in Tibet (China), 3 cases including the personnel development in the environmental management field of electric power companies (India), and 2 cases including the information exchange program in the energy conservation field (Vietnam). A total of 74 researchers were invited to Japan, that is, to the environmental protection training course of Japan. (NEDO)

  3. A Traveling Exhibit of Cassini Image Science

    Science.gov (United States)

    Burns, Joseph A.; Hedman, M. M.; Tiscareno, M. S.; Ebel, D.; Mac Low, M.; Lovett, L. E.; Burns, J. K.; Schaff, N.; Bilson, E. M.

    2007-10-01

    An exhibit of Cassini's images will open at NYC's American Museum of Natural History in March 2008 and then visit the Johnson Art Museum (Cornell) throughout fall 2008, including during next year's DPS. It is under consideration by several other venues in the States and overseas. The exhibit will feature 40-50 images, ranging from letter size to large posters, taken by remote-sensing instruments aboard Cassini and Huygens. Photos will be organized into a half-dozen thematic clusters (e.g., organized by celestial target or by physical process); a panel will introduce each grouping with individual images identified briefly. The Saturn system is a perfect vehicle to educate citizens about planetary science and origins. The images’ beauty should capture the public's attention, allowing us to then engage their curiosity about the relevant science. Among the Saturn system's broad suite of objects are Enceladus and Titan, two satellites of astrobiological interest; moreover, the rings display many processes active in other astrophysical disks. Several auxiliary ideas will be implemented. In Ithaca, we will project images at night against the museum's sand-colored exterior walls. A 10-12 minute musical composition has been commissioned from Roberto Sierra to open the show. We will encourage school children to participate in a human orrery circling the museum and will seek volunteers to participate in several Saturnalia. At Cornell we will involve the university and local communities, by taping their reactions to the images’ exquisite beauty as well as to their scientific content. Cassini will be the E/PO focus of next year's DPS meeting; those materials will be employed throughout the fall at New York schools and be available to travel with the show. We intend to work with NYC partners to offer teacher credits for associated weekend courses. We will produce classroom materials, including a DVD, for teacher use.

  4. Hawthorn (Crataegus monogyna Jacq.) extract exhibits atropine-sensitive activity in a cultured cardiomyocyte assay.

    Science.gov (United States)

    Salehi, Satin; Long, Shannon R; Proteau, Philip J; Filtz, Theresa M

    2009-01-01

    Hawthorn (Crataegus spp.) plant extract is used as a herbal alternative medicine for the prevention and treatment of various cardiovascular diseases. Recently, it was shown that hawthorn extract preparations caused negative chronotropic effects in a cultured neonatal murine cardiomyocyte assay, independent of beta-adrenergic receptor blockade. The aim of this study was to further characterize the effect of hawthorn extract to decrease the contraction rate of cultured cardiomyocytes. To test the hypothesis that hawthorn is acting via muscarinic receptors, the effect of hawthorn extract on atrial versus ventricular cardiomyocytes in culture was evaluated. As would be expected for activation of muscarinic receptors, hawthorn extract had a greater effect in atrial cells. Atrial and/or ventricular cardiomyocytes were then treated with hawthorn extract in the presence of atropine or himbacine. Changes in the contraction rate of cultured cardiomyocytes revealed that both muscarinic antagonists significantly attenuated the negative chronotropic activity of hawthorn extract. Using quinuclidinyl benzilate, L-[benzylic-4,4'-(3)H] ([(3)H]-QNB) as a radioligand antagonist, the effect of a partially purified hawthorn extract fraction to inhibit muscarinic receptor binding was quantified. Hawthorn extract fraction 3 dose-dependently inhibited [(3)H]-QNB binding to mouse heart membranes. Taken together, these findings suggest that decreased contraction frequency by hawthorn extracts in neonatal murine cardiomyocytes may be mediated via muscarinic receptor activation.

  5. Homogenous 96-plex PEA immunoassay exhibiting high sensitivity, specificity, and excellent scalability

    DEFF Research Database (Denmark)

    Assarsson, Erika; Lundberg, Martin; Holmquist, Göran

    2014-01-01

    Medical research is developing an ever greater need for comprehensive high-quality data generation to realize the promises of personalized health care based on molecular biomarkers. The nucleic acid proximity-based methods proximity ligation and proximity extension assays have, with their dual...

  6. ESIPT-exhibiting protein probes: a sensitive method for rice proteins detection during starch extraction.

    Science.gov (United States)

    Cardoso, Mateus Borba; Samios, Dimitrios; da Silveira, Nádya Pesce; Rodembusch, Fabiano Severo; Stefani, Valter

    2007-01-01

    The 2-(4'-isothiocyanate-2'-hydroxyphenyl)benzoxazole dye was successfully applied as label of rice proteins during the alkaline extraction of starch. Direct fluorescence measurements were used to observe the presence of proteins labelled in different steps of rice starch extraction. The results were compared to those obtained with the well-known biuret colorimetric test. Whereas the colorimetric test indicates the absence of protein after the third extraction step, the fluorescence emission of the conjugate could be observed in all extraction steps. The separation of different rice proteins could also be observed.

  7. Exhibition of Stochastic Resonance in Vestibular Perception

    Science.gov (United States)

    Galvan-Garza, R. C.; Clark, T. K.; Merfeld, D. M.; Bloomberg, J. J.; Oman, C. M.; Mulavara, A. P.

    2016-01-01

    Astronauts experience sensorimotor changes during spaceflight, particularly during G-transitions. Post flight sensorimotor changes include spatial disorientation, along with postural and gait instability that may degrade operational capabilities of the astronauts and endanger the crew. A sensorimotor countermeasure that mitigates these effects would improve crewmember safety and decrease risk. The goal of this research is to investigate the potential use of stochastic vestibular stimulation (SVS) as a technology to improve sensorimotor function. We hypothesize that low levels of SVS will improve sensorimotor perception through the phenomenon of stochastic resonance (SR), when the response of a nonlinear system to a weak input signal is enhanced by the application of a particular nonzero level of noise. This study aims to advance the development of SVS as a potential countermeasure by 1) demonstrating the exhibition of stochastic resonance in vestibular perception, a vital component of sensorimotor function, 2) investigating the repeatability of SR exhibition, and 3) determining the relative contribution of the semicircular canals (SCC) and otolith (OTO) organs to vestibular perceptual SR. A constant current stimulator was used to deliver bilateral bipolar SVS via electrodes placed on each of the mastoid processes, as previously done. Vestibular perceptual motion recognition thresholds were measured using a 6-degree of freedom MOOG platform and a 150 trial 3-down/1-up staircase procedure. In the first test session, we measured vestibular perceptual thresholds in upright roll-tilt at 0.2 Hz (SCC+OTO) with SVS ranging from 0-700 µA. In a second test session a week later, we re-measured roll-tilt thresholds with 0, optimal (from test session 1), and 1500 µA SVS levels. A subset of these subjects, plus naive subjects, participated in two additional test sessions in which we measured thresholds in supine roll-rotation at 0.2 Hz (SCC) and upright y-translation at 1 Hz

  8. An Upside to Reward Sensitivity: The Hippocampus Supports Enhanced Reinforcement Learning in Adolescence.

    Science.gov (United States)

    Davidow, Juliet Y; Foerde, Karin; Galván, Adriana; Shohamy, Daphna

    2016-10-05

    Adolescents are notorious for engaging in reward-seeking behaviors, a tendency attributed to heightened activity in the brain's reward systems during adolescence. It has been suggested that reward sensitivity in adolescence might be adaptive, but evidence of an adaptive role has been scarce. Using a probabilistic reinforcement learning task combined with reinforcement learning models and fMRI, we found that adolescents showed better reinforcement learning and a stronger link between reinforcement learning and episodic memory for rewarding outcomes. This behavioral benefit was related to heightened prediction error-related BOLD activity in the hippocampus and to stronger functional connectivity between the hippocampus and the striatum at the time of reinforcement. These findings reveal an important role for the hippocampus in reinforcement learning in adolescence and suggest that reward sensitivity in adolescence is related to adaptive differences in how adolescents learn from experience. Copyright © 2016 Elsevier Inc. All rights reserved.

  9. Exhibiting Good Health: Public Health Exhibitions in London, 1948-71.

    Science.gov (United States)

    Mold, Alex

    2018-01-01

    This article examines the changing nature of public health services and their relationship with the public in post-war Britain by an analysis of the exhibitions mounted by Medical Officers of Health (MOsH) in London. Focusing on the period 1948-71, the article explores a time when public health practice, and the problems it faced, were in flux. A decline in infectious disease and an increase in chronic conditions linked to lifestyle required a new role for public health services. Exhibitions were one of several methods that MOsH used to inform the public about dangers to their health, but also to persuade them to change their behaviour. The exhibition, though, offers a unique insight into the relationship between public health authorities and the public, as exhibitions brought MOsH into direct contact with people. It is suggested that in the MOsH exhibitions we can find signs of a new relationship between public health practitioners and the public. Whilst elements of the pre-war, often moralistic ideology of public health services could still be detected, there is also evidence of a more nuanced, responsive dynamic between practitioners and the people. By the end of the 1960s, 'the public' was increasingly being thought of as a collection of 'publics', including individuals, target groups and vocal respondents.

  10. Exhibiting health and medicine as culture

    DEFF Research Database (Denmark)

    Whiteley, Louise; Tybjerg, Karin; Pedersen, Bente Vinge

    2017-01-01

    Introduction: This paper discusses the potential role of medical museums in public engagement with health and medicine, based on the work of Medical Museion at the University of Copenhagen. Rather than asking whether cultural venues such as museums can directly improve the well-being of their vis......Introduction: This paper discusses the potential role of medical museums in public engagement with health and medicine, based on the work of Medical Museion at the University of Copenhagen. Rather than asking whether cultural venues such as museums can directly improve the well......-being of their visitors, we instead focus on how museums should communicate about health and medicine. Methods: The paper describes three examples of exhibitions at Medical Museion that attempt to display medicine as culture, and draws out three of the key strategies they employ. Results: The three key strategies are: (1......: There is increasing emphasis on the need for health communication to recognize people’s multiple, lived cultures. We argue that we should also recognize that medical research and practice is itself a form of culture, and as such is multiple and historically shifting. This paper demonstrates that museums are an ideal...

  11. Agitated honeybees exhibit pessimistic cognitive biases.

    Science.gov (United States)

    Bateson, Melissa; Desire, Suzanne; Gartside, Sarah E; Wright, Geraldine A

    2011-06-21

    Whether animals experience human-like emotions is controversial and of immense societal concern [1-3]. Because animals cannot provide subjective reports of how they feel, emotional state can only be inferred using physiological, cognitive, and behavioral measures [4-8]. In humans, negative feelings are reliably correlated with pessimistic cognitive biases, defined as the increased expectation of bad outcomes [9-11]. Recently, mammals [12-16] and birds [17-20] with poor welfare have also been found to display pessimistic-like decision making, but cognitive biases have not thus far been explored in invertebrates. Here, we ask whether honeybees display a pessimistic cognitive bias when they are subjected to an anxiety-like state induced by vigorous shaking designed to simulate a predatory attack. We show for the first time that agitated bees are more likely to classify ambiguous stimuli as predicting punishment. Shaken bees also have lower levels of hemolymph dopamine, octopamine, and serotonin. In demonstrating state-dependent modulation of categorization in bees, and thereby a cognitive component of emotion, we show that the bees' response to a negatively valenced event has more in common with that of vertebrates than previously thought. This finding reinforces the use of cognitive bias as a measure of negative emotional states across species and suggests that honeybees could be regarded as exhibiting emotions. Copyright © 2011 Elsevier Ltd. All rights reserved.

  12. Gastric schwannoma exhibiting increased fluorodeoxyglucose uptake.

    Science.gov (United States)

    Komatsu, Daisuke; Koide, Naohiko; Hiraga, Risako; Furuya, Naoyuki; Akamatsu, Taiji; Uehara, Takeshi; Miyagawa, Shinichi

    2009-01-01

    This is the first case of gastric schwannoma that exhibited increased accumulation of [(18)F] fluorodeoxyglucose (FDG) on positron emission tomography (PET) imaging. The patient was a 60-year-old woman in whom esophagogastroduodenoscopy showed a submucosal tumor, about 25 mm in size, in the upper body of the stomach, with ulceration at the top of the tumor. Endoscopic ultrasonography revealed a well-defined hypoechoic mass located in the proper muscle layer of the stomach. The specimen taken from the tumor showed only inflammatory degenerative tissue. Abdominal computed tomography revealed a tumor in the upper body of the stomach. FDG-PET showed FDG uptake (standardized uptake value [SUV] max 5.8) coincident with the tumor. Hence, the tumor was diagnosed initially as a gastrointestinal stromal tumor of the stomach. Laparoscopic partial gastrectomy was performed. Pathological examination showed that the tumor consisted of spindle cells with large nuclei, and mitosis was absent. The Ki-67 labeling index of the tumor cells was 4%. Immunohistochemically, the tumor cells showed a positive reaction for S-100 protein, whereas they were negative for KIT, CD 34, and alpha-smooth muscle actin protein. The tumor was diagnosed as a benign gastric schwannoma. Gastric schwannoma should be included in the differential diagnosis of submucosal tumors of the stomach with FDG uptake.

  13. Deficits of hot executive function in 0 crossmark developmental coordination disorder: Sensitivity to positive social cues (Reprinted from Human Movement Science, vol 38, pg 209-224)

    NARCIS (Netherlands)

    Rahimi-Golkhandan, S.; Steenbergen, B.; Piek, J.P.; Wilson, P.H.

    2015-01-01

    Recent research shows that children with motor coordination problems (or developmental coordination disorder – DCD) show deficits in not only cool executive function (EF), but also hot EF. We aimed to determine whether this deficit of hot EF is due to heightened sensitivity to rewarding stimuli,

  14. Respiratory syncytial virus infection is associated with an altered innate immunity and a heightened pro-inflammatory response in the lungs of preterm lambs.

    Science.gov (United States)

    Sow, Fatoumata B; Gallup, Jack M; Krishnan, Subramaniam; Patera, Andriani C; Suzich, Joann; Ackermann, Mark R

    2011-08-09

    Factors explaining the greater susceptibility of preterm infants to severe lower respiratory infections with respiratory syncytial virus (RSV) remain poorly understood. Fetal/newborn lambs are increasingly appreciated as a model to study key elements of RSV infection in newborn infants due to similarities in lung alveolar development, immune response, and susceptibility to RSV. Previously, our laboratory demonstrated that preterm lambs had elevated viral antigen and developed more severe lesions compared to full-term lambs at seven days post-infection. Here, we compared the pathogenesis and immunological response to RSV infection in lungs of preterm and full-term lambs. Lambs were delivered preterm by Caesarian section or full-term by natural birth, then inoculated with bovine RSV (bRSV) via the intratracheal route. Seven days post-infection, lungs were collected for evaluation of cytokine production, histopathology and cellular infiltration. Compared to full-term lambs, lungs of preterm lambs had a heightened pro-inflammatory response after infection, with significantly increased MCP-1, MIP-1α, IFN-γ, TNF-α and PD-L1 mRNA. RSV infection in the preterm lung was characterized by increased epithelial thickening and periodic acid-Schiff staining, indicative of glycogen retention. Nitric oxide levels were decreased in lungs of infected preterm lambs compared to full-term lambs, indicating alternative macrophage activation. Although infection induced significant neutrophil recruitment into the lungs of preterm lambs, neutrophils produced less myeloperoxidase than those of full-term lambs, suggesting decreased functional activation. Taken together, our data suggest that increased RSV load and inadequate immune response may contribute to the enhanced disease severity observed in the lungs of preterm lambs.

  15. Heightened D3 dopamine receptor levels in cocaine dependence and contributions to the addiction behavioral phenotype: a positron emission tomography study with [11C]-+-PHNO.

    Science.gov (United States)

    Payer, Doris E; Behzadi, Arian; Kish, Stephen J; Houle, Sylvain; Wilson, Alan A; Rusjan, Pablo M; Tong, Junchao; Selby, Peter; George, Tony P; McCluskey, Tina; Boileau, Isabelle

    2014-01-01

    The dopamine system is a primary treatment target for cocaine dependence (CD), but research on dopaminergic abnormalities (eg, D2 receptor system deficiencies) has so far failed to translate into effective treatment strategies. The D3 receptor system has recently attracted considerable clinical interest, and D3 antagonism is now under investigation as a novel avenue for addiction treatment. The objective here was to evaluate the status and behavioral relevance of the D3 receptor system in CD, using the positron emission tomography (PET) radiotracer [(11)C]-(+)-PHNO. Fifteen CD subjects (many actively using, but all abstinent 7-240 days on scan day) and fifteen matched healthy control (HC) subjects completed two PET scans: one with [(11)C]-(+)-PHNO to assess D3 receptor binding (BPND; calculated regionally using the simplified reference tissue model), and for comparison, a second scan with [(11)C]raclopride to assess D2/3 binding. CD subjects also completed a behavioral battery to characterize the addiction behavioral phenotype. CD subjects showed higher [(11)C]-(+)-PHNO BPND than HC in the substantia nigra, which correlated with behavioral impulsiveness and risky decision making. In contrast, [(11)C]raclopride BPND was lower across the striatum in CD, consistent with previous literature in 2 week abstinence. The data suggest that in contrast to a D2 deficiency, CD individuals may have heightened D3 receptor levels, which could contribute to addiction-relevant traits. D3 upregulation is emerging as a biomarker in preclinical models of addiction, and human PET studies of this receptor system can help guide novel pharmacological strategies for treatment.

  16. Sensitive innovation

    DEFF Research Database (Denmark)

    Søndergaard, Katia Dupret

    Present paper discusses sources of innovation as heterogenic and at times intangible processes. Arguing for heterogeneity and intangibility as sources of innovation originates from a theoretical reading in STS and ANT studies (e.g. Callon 1986, Latour 1996, Mol 2002, Pols 2005) and from field work...... in the area of mental health (Dupret Søndergaard 2009, 2010). The concept of sensitive innovation is developed to capture and conceptualise exactly those heterogenic and intangible processes. Sensitive innovation is therefore primarily a way to understand innovative sources that can be......, but are not necessarily, recognized and acknowledged as such in the outer organisational culture or by management. The added value that qualifies these processes to be defined as “innovative” are thus argued for along different lines than in more traditional innovation studies (e.g. studies that build on the classic...

  17. 77 FR 18295 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2012-03-27

    ... Culturally Significant Objects Imported for Exhibition Determinations: ``Roy Lichtenstein: A Retrospective... determine that the objects to be included in the exhibition ``Roy Lichtenstein: A Retrospective'' imported from abroad for temporary exhibition within the United States, are of cultural significance. The...

  18. THE CRM-BASED DIGITAL EXHIBITION SYSTEM FOR CLOTHING INDUSTRY

    National Research Council Canada - National Science Library

    Ming-Kuen Chen; Kuo-Hsuan Chen; Chia-Hon Chen

    2014-01-01

    .... Digital exhibition precludes the restrictions of time, location, space and planning on past physical exhibitions, and can demonstrate characteristics of diversity, interaction and low cost, and break...

  19. Interactive Effects of Anxiety Sensitivity and Subjective Social Status on Psychological Symptomatology in Black Adults.

    Science.gov (United States)

    Reitzel, Lorraine R; Childress, Sarah D; Obasi, Ezemenari M; Garey, Lorra; Vidrine, Damon J; McNeill, Lorna H; Zvolensky, Michael J

    2017-01-01

    Anxiety sensitivity is the fear of anxiety-related sensations and subjective social status is a self-perception of social standing relative to others: both constructs have been linked to psychological symptomatology. This study investigated the interactive effects of anxiety sensitivity and social status in relation to anxiety and depressive symptomatology expression among 124 black adults. Participants provided sociodemographics and completed self-report questionnaires. The interactive associations between anxiety sensitivity and social status on anxiety symptomatology and depressive symptomatology were examined with hierarchical linear regressions adjusted for sociodemographics and negative affectivity. Significant interactions between anxiety sensitivity and social status were evident only for anxiety symptoms: specifically, the association between anxiety sensitivity and anxiety symptoms was much stronger for individuals with lower (versus higher) subjective social status. Black adults with this higher anxiety sensitivity/lower social status phenotype may be at heightened risk for the expression of anxiety symptomatology, and may benefit from interventions to reduce anxiety sensitivity.

  20. Anxiety Sensitivity and Sleep-Related Problems in Anxious Youth

    Science.gov (United States)

    Weiner, Courtney L.; Elkins, Meredith; Pincus, Donna; Comer, Jonathan

    2015-01-01

    Anxiety disorders constitute the most common mental health disturbance experienced by youth. Sleep-related problems (SRPs) are highly prevalent among anxious youth and encompass a variety of problems including nighttime fears, insomnia, and refusal to sleep alone. Given that chronic sleep disturbance is associated with a range of behavioral and physical problems in youth and predicts future psychopathology, it is important to elucidate the nature of SRPs in anxious youth. The present study investigated the relationship between sleep problems and anxiety sensitivity in a sample of 101 anxious youth, ages 6–17. Heightened anxiety sensitivity significantly predicted prolonged sleep onset latency across the sample, even after accounting for severity of anxiety, depression, and age. Results support previous research indicating that SRPs are common among anxious youth and suggest that anxiety sensitivity may play a particularly important role in sleep onset latency. PMID:25863826

  1. Adolescence as a Sensitive Period of Brain Development.

    Science.gov (United States)

    Fuhrmann, Delia; Knoll, Lisa J; Blakemore, Sarah-Jayne

    2015-10-01

    Most research on sensitive periods has focussed on early sensory, motor, and language development, but it has recently been suggested that adolescence might represent a second ‘window of opportunity’ in brain development. Here, we explore three candidate areas of development that are proposed to undergo sensitive periods in adolescence: memory, the effects of social stress, and drug use. We describe rodent studies, neuroimaging, and large-scale behavioural studies in humans that have yielded data that are consistent with heightened neuroplasticity in adolescence. Critically however, concrete evidence for sensitive periods in adolescence is mostly lacking. To provide conclusive evidence, experimental studies are needed that directly manipulate environmental input and compare effects in child, adolescent, and adult groups.

  2. The fetal/neonatal mouse liver exhibits transcriptional features of the adult pancreas.

    Science.gov (United States)

    Metabolic homeostasis of the organism is maintained by the liver’s ability to detoxify and eliminate xenobiotics through the expression of xenobiotic metabolism enxymes (XME). The fetus and neonate have been hypothesized to exhibit increased sensitivity to xenobiotic toxicity. T...

  3. Designing immersion exhibits as border-crossing environments

    DEFF Research Database (Denmark)

    Mortensen, Marianne Foss

    2010-01-01

    be applied to achieve an understanding of the immersion exhibit form. The argument proceeds by demonstrating how the characteristics of immersion exhibits, and visitors to them, classify them as microcultures, and examining the implications of this for exhibit design using a hypothetical immersion exhibit...

  4. Chronic Oxidative Stress, Mitochondrial Dysfunction, Nrf2 Activation and Inflammation in the Hippocampus Accompany Heightened Systemic Inflammation and Oxidative Stress in an Animal Model of Gulf War Illness.

    Science.gov (United States)

    Shetty, Geetha A; Hattiangady, Bharathi; Upadhya, Dinesh; Bates, Adrian; Attaluri, Sahithi; Shuai, Bing; Kodali, Maheedhar; Shetty, Ashok K

    2017-01-01

    (Tnfa, IL1b, IL1a, Tgfb, and Fgf2) and lipid peroxidation byproduct malondialdehyde in the serum, suggesting the presence of an incessant systemic inflammation and elevated oxidative stress. These results imply that chronic oxidative stress, inflammation, and mitochondrial dysfunction in the hippocampus, and heightened systemic inflammation and oxidative stress likely underlie the persistent memory and mood dysfunction observed in GWI.

  5. Chronic Oxidative Stress, Mitochondrial Dysfunction, Nrf2 Activation and Inflammation in the Hippocampus Accompany Heightened Systemic Inflammation and Oxidative Stress in an Animal Model of Gulf War Illness

    Directory of Open Access Journals (Sweden)

    Geetha A. Shetty

    2017-06-01

    chemokines (Tnfa, IL1b, IL1a, Tgfb, and Fgf2 and lipid peroxidation byproduct malondialdehyde in the serum, suggesting the presence of an incessant systemic inflammation and elevated oxidative stress. These results imply that chronic oxidative stress, inflammation, and mitochondrial dysfunction in the hippocampus, and heightened systemic inflammation and oxidative stress likely underlie the persistent memory and mood dysfunction observed in GWI.

  6. Creating Virtual Exhibitions for Educational and Cultural Development

    Directory of Open Access Journals (Sweden)

    Gabriela DUMITRESCU

    2014-01-01

    Full Text Available The paper presents different tools and mechanisms to implement a virtual exhibition in different cultural areas, such as museums and libraries. Quality characteristics of virtual exhibitions are identified and described. The possibility to create native mobile applications for virtual exhibitions presentation is analyzed. The functional flow of creating a virtual exhibition is presented and discussed. The Seals - History Treasure exhibition is presented and significant historical documents are revealed.

  7. Sensitivity, Recalculated

    Energy Technology Data Exchange (ETDEWEB)

    Brodsky, J. P. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2016-11-07

    Prior to this study, the sensitivity in nEXO was calculated using an approximate method that does not provide 90% coverage. I find it useful to understand the confidence level of a limit by focusing on the confidence level as a property of the method used to find the limit.A particular method (algorithm,formula) is applied to an experiment to produce a limit. That experiment was conducted in a particular universe with certain values of the physical parameters. We’d like a method than produces a correct limit for 90% of the experiments that could run. We also want that to be true for every universe—that is, regardless of the physical parameter value, the method should still produce a correct limit 90% of the time.

  8. A content-oriented model for science exhibit engineering

    DEFF Research Database (Denmark)

    Achiam, Marianne

    2013-01-01

    : as a means to operationalize the link between exhibit features and visitor activities; and as a template to transform scientists’ practices in the research context into visitors’ activities in the exhibit context. The resulting model of science exhibit engineering is presented and exemplified, and its......Recently, science museums have begun to review their educational purposes and redesign their pedagogies. At the most basic level, this entails accounting for the performance of individual exhibits, and indeed, in some cases, research indicates shortcomings in exhibit design: While often successful...... implications for science exhibit design are discussed at three levels: the design product, the design process, and the design methodology....

  9. Particulate matter induces cardiac arrhythmias via dysregulation of carotid body sensitivity and cardiac sodium channels.

    Science.gov (United States)

    Wang, Ting; Lang, Gabriel D; Moreno-Vinasco, Liliana; Huang, Yong; Goonewardena, Sascha N; Peng, Ying-Jie; Svensson, Eric C; Natarajan, Viswanathan; Lang, Roberto M; Linares, Jered D; Breysse, Patrick N; Geyh, Alison S; Samet, Jonathan M; Lussier, Yves A; Dudley, Samuel; Prabhakar, Nanduri R; Garcia, Joe G N

    2012-04-01

    The mechanistic links between exposure to airborne particulate matter (PM) pollution and the associated increases in cardiovascular morbidity and mortality, particularly in people with congestive heart failure (CHF), have not been identified. To advance understanding of this issue, genetically engineered mice (CREB(A133)) exhibiting severe dilated cardiomyopathic changes were exposed to ambient PM collected in Baltimore. CREB(A133) mice, which display aberrant cardiac physiology and anatomy reminiscent of human CHF, displayed evidence of basal autonomic aberrancies (compared with wild-type mice) with PM exposure via aspiration, producing significantly reduced heart rate variability, respiratory dysynchrony, and increased ventricular arrhythmias. Carotid body afferent nerve responses to hypoxia and hyperoxia-induced respiratory depression were pronounced in PM-challenged CREB(A133) mice, and denervation of the carotid bodies significantly reduced PM-mediated cardiac arrhythmias. Genome-wide expression analyses of CREB(A133) left ventricular tissues demonstrated prominent Na(+) and K(+) channel pathway gene dysregulation. Subsequent PM challenge increased tyrosine phosphorylation and nitration of the voltage-gated type V cardiac muscle α-subunit of the Na(+) channel encoded by SCN5A. Ranolazine, a Na(+) channel modulator that reduces late cardiac Na(+) channel currents, attenuated PM-mediated cardiac arrhythmias and shortened PM-elongated QT intervals in vivo. These observations provide mechanistic insights into the epidemiologic findings in susceptibility of human CHF populations to PM exposure. Our results suggest a multiorgan pathobiology inherent to the CHF phenotype that is exaggerated by PM exposure via heightened carotid body sensitivity and cardiac Na(+) channel dysfunction.

  10. Particulate Matter Induces Cardiac Arrhythmias via Dysregulation of Carotid Body Sensitivity and Cardiac Sodium Channels

    Science.gov (United States)

    Wang, Ting; Lang, Gabriel D.; Moreno-Vinasco, Liliana; Huang, Yong; Goonewardena, Sascha N.; Peng, Ying–Jie; Svensson, Eric C.; Natarajan, Viswanathan; Lang, Roberto M.; Linares, Jered D.; Breysse, Patrick N.; Geyh, Alison S.; Samet, Jonathan M.; Lussier, Yves A.; Dudley, Samuel; Prabhakar, Nanduri R.

    2012-01-01

    The mechanistic links between exposure to airborne particulate matter (PM) pollution and the associated increases in cardiovascular morbidity and mortality, particularly in people with congestive heart failure (CHF), have not been identified. To advance understanding of this issue, genetically engineered mice (CREBA133) exhibiting severe dilated cardiomyopathic changes were exposed to ambient PM collected in Baltimore. CREBA133 mice, which display aberrant cardiac physiology and anatomy reminiscent of human CHF, displayed evidence of basal autonomic aberrancies (compared with wild-type mice) with PM exposure via aspiration, producing significantly reduced heart rate variability, respiratory dysynchrony, and increased ventricular arrhythmias. Carotid body afferent nerve responses to hypoxia and hyperoxia-induced respiratory depression were pronounced in PM-challenged CREBA133 mice, and denervation of the carotid bodies significantly reduced PM-mediated cardiac arrhythmias. Genome-wide expression analyses of CREBA133 left ventricular tissues demonstrated prominent Na+ and K+ channel pathway gene dysregulation. Subsequent PM challenge increased tyrosine phosphorylation and nitration of the voltage-gated type V cardiac muscle α-subunit of the Na+ channel encoded by SCN5A. Ranolazine, a Na+ channel modulator that reduces late cardiac Na+ channel currents, attenuated PM-mediated cardiac arrhythmias and shortened PM-elongated QT intervals in vivo. These observations provide mechanistic insights into the epidemiologic findings in susceptibility of human CHF populations to PM exposure. Our results suggest a multiorgan pathobiology inherent to the CHF phenotype that is exaggerated by PM exposure via heightened carotid body sensitivity and cardiac Na+ channel dysfunction. PMID:22108299

  11. Weight lifting can facilitate appreciative comprehension for museum exhibits

    Directory of Open Access Journals (Sweden)

    Yuki eYamada

    2014-04-01

    Full Text Available Appreciation of exhibits in a museum can be equated to a virtual experience of lives in the contexts originally surrounding the exhibits. Here we focus on the importance of weight information, and hence tested whether experiencing a weight during museum exhibit appreciation affects the beholders’ satisfaction and recognition memory for the exhibits. An experiment was performed at a museum exhibiting skeletal preparations of animals. We used nine preparations and prepared four weight stimuli as weight cues in accordance with the actual weight of four of the preparations: Remaining five preparations was displayed without weight stimuli. In the cued condition, participants were asked to lift up the weight stimuli during their observation of the four exhibits. In the uncued condition, participants observed the exhibits without touching the weight stimuli. After observation of the exhibits, the participants responded to a questionnaire that measured their impressions of the exhibits and the museum, and performed a recognition test on the exhibits. Results showed that memory performance was better and viewing duration was longer with weight lifting instruction than without instruction. A factor analysis on the questionnaires revealed four factors (likeability, contentment, value, and quality. A path analysis showed indirect effects of viewing duration on memory performance and willingness-to-pay for the museum appreciation through the impression factors. Our findings provide insight into a new interactive exhibition that enables long appreciation producing positive effects on visitors’ impression, memory, and value estimation for exhibits.

  12. Weight lifting can facilitate appreciative comprehension for museum exhibits.

    Science.gov (United States)

    Yamada, Yuki; Harada, Shinya; Choi, Wonje; Fujino, Rika; Tokunaga, Akinobu; Gao, Yueyun; Miura, Kayo

    2014-01-01

    Appreciation of exhibits in a museum can be equated to a virtual experience of lives in the contexts originally surrounding the exhibits. Here we focus on the importance of weight information, and hence tested whether experiencing a weight during museum exhibit appreciation affects the beholders' satisfaction and recognition memory for the exhibits. An experiment was performed at a museum exhibiting skeletal preparations of animals. We used nine preparations and prepared four weight stimuli as weight cues in accordance with the actual weight of four of the preparations: Remaining five preparations was displayed without weight stimuli. In the cued condition, participants were asked to lift up the weight stimuli during their observation of the four exhibits. In the uncued condition, participants observed the exhibits without touching the weight stimuli. After observation of the exhibits, the participants responded to a questionnaire that measured their impressions of the exhibits and the museum, and performed a recognition test on the exhibits. Results showed that memory performance was better and viewing duration was longer with weight lifting instruction than without instruction. A factor analysis on the questionnaires revealed four factors (likeability, contentment, value, and quality). A path analysis showed indirect effects of viewing duration on memory performance and willingness-to-pay (WTP) for the museum appreciation through the impression factors. Our findings provide insight into a new interactive exhibition that enables long appreciation producing positive effects on visitors' impression, memory, and value estimation for exhibits.

  13. 78 FR 7849 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2013-02-04

    ... Culturally Significant Objects Imported for Exhibition Determinations: ``Edwardian Opulence: British Art at... April 15, 2003), I hereby determine that the objects to be included in the exhibition ``Edwardian Opulence: British Art at the Dawn of the Twentieth Century,'' imported from abroad for temporary exhibition...

  14. 76 FR 68808 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2011-11-07

    ... Exhibition Determinations: ``Transition to Christianity: Art of Late Antiquity, 3rd-7th Century AD'' SUMMARY... objects to be included in the exhibition ``Transition to Christianity: Art of Late Antiquity, 3rd-7th Century AD,'' imported from abroad for temporary exhibition within the United States, are of cultural...

  15. 76 FR 52378 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2011-08-22

    ... Culturally Significant Objects Imported for Exhibition Determinations: ``5,000 Years of Chinese Jade..., Smithsonian Institution'' Exhibition ACTION: Notice, correction. SUMMARY: On July 29, 2011, notice was... the Department of State pertaining to the exhibition ``5,000 Years of Chinese Jade Featuring...

  16. 45 CFR 1160.5 - Eligibility for domestic exhibitions.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false Eligibility for domestic exhibitions. 1160.5... AND ARTIFACTS INDEMNITY ACT § 1160.5 Eligibility for domestic exhibitions. An indemnity agreement for a domestic exhibition made under these regulations shall cover eligible items from the United States...

  17. 45 CFR 1160.4 - Eligibility for international exhibitions.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false Eligibility for international exhibitions. 1160.4... AND ARTIFACTS INDEMNITY ACT § 1160.4 Eligibility for international exhibitions. An indemnity agreement for an international exhibition made under these regulations shall cover: (a) Eligible items from...

  18. 75 FR 6079 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2010-02-05

    ... Culturally Significant Objects Imported for Exhibition Determinations: ``Compass and Rule: Architecture as... 15, 2003 , I hereby determine that the objects to be included in the exhibition ``Compass and Rule: Architecture as Mathematical Practice in England, 1500-1750,'' imported from abroad for temporary exhibition...

  19. 33 CFR 20.807 - Exhibits and documents.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Exhibits and documents. 20.807 Section 20.807 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL RULES... Evidence § 20.807 Exhibits and documents. (a) Each exhibit must be numbered and marked for identification...

  20. A kinetic model of TBP auto-regulation exhibits bistability.

    Science.gov (United States)

    Gokhale, Sucheta A; Roshan, Reema; Khetan, Vivek; Pillai, Beena; Gadgil, Chetan J

    2010-08-05

    TATA Binding Protein (TBP) is required for transcription initiation by all three eukaryotic RNA polymerases. It participates in transcriptional initiation at the majority of eukaryotic gene promoters, either by direct association to the TATA box upstream of the transcription start site or by indirectly localizing to the promoter through other proteins. TBP exists in solution in a dimeric form but binds to DNA as a monomer. Here, we present the first mathematical model for auto-catalytic TBP expression and use it to study the role of dimerization in maintaining the steady state TBP level. We show that the autogenous regulation of TBP results in a system that is capable of exhibiting three steady states: an unstable low TBP state, one stable state corresponding to a physiological TBP concentration, and another stable steady state corresponding to unviable cells where no TBP is expressed. Our model predicts that a basal level of TBP is required to establish the transcription of the TBP gene, and hence for cell viability. It also predicts that, for the condition corresponding to a typical mammalian cell, the high-TBP state and cell viability is sensitive to variation in DNA binding strength. We use the model to explore the effect of the dimer in buffering the response to changes in TBP levels, and show that for some physiological conditions the dimer is not important in buffering against perturbations. Results on the necessity of a minimum basal TBP level support the in vivo observations that TBP is maternally inherited, providing the small amount of TBP required to establish its ubiquitous expression. The model shows that the system is sensitive to variations in parameters indicating that it is vulnerable to mutations in TBP. A reduction in TBP-DNA binding constant can lead the system to a regime where the unviable state is the only steady state. Contrary to the current hypotheses, we show that under some physiological conditions the dimer is not very important in

  1. [Review of the pharmaceutical exhibitions in the Meiji Era (Supplement)].

    Science.gov (United States)

    Koyama, T

    1994-01-01

    The author described (Jpn. J. History Pharm. 16(1), 9-20 (1981) the Review of the Pharmaceutical Exhibitions in the Meiji era. But afterwards the author found there were omissions of three exhibitions. These are the Nagaoka, the Osaka, and the Akita Exhibitions. The Nagaoka Exhibition was organized by the Nagaoka Pharmacists Association in June, 1890. The Osaka Exhibition opened on Jan. 18, 1891 by Osaka Branch of the Pharmaceutical Society of Japan. The Akita Pharmaceutical Exhibition was held on Sept. 24-26, 1892, as the chief event of the opening ceremony of the Akita Drug-Trader Association, united pharmacists, druggists, and drug-manufacturers throughout Akita Prefecture. It is the most large-scaled of the three. The exhibits were 1,419, and the visitors were above 8,830. The planning originated with a young pharmacist Masayasu Hanyu.

  2. Digital Natives: Creating Emergent Exhibitions through Digital Technologies

    DEFF Research Database (Denmark)

    Smith, Rachel Charlotte; Iversen, Ole Sejer; Dindler, Christian

    2011-01-01

    Digital Technology can support the creation of dialogical spaces in the museum, both playful and reflective, that allow audiences to engage in the ongoing construction and reproduction of cultural heritage creating novel connections between self and others and between past, present and future....... In this way, digital technology can contribute to the creation of emergent exhibitions in which the exhibition is created in dialogue between audiences and the museum. We present experiences from a current research project, the Digital Natives exhibition, in which digital technology was designed...... as an integral part of the exhibition to encourage dialogue between audiences and the exhibition materials and thereby investigate how the exhibition emerge as a result of this dialogic co-construction inside the exhibition space. In short, the opportunities offered by digital technologies prompts us to consider...

  3. Adipose tissue remodeling in rats exhibiting fructose-induced obesity.

    Science.gov (United States)

    Crescenzo, Raffaella; Bianco, Francesca; Coppola, Paola; Mazzoli, Arianna; Valiante, Salvatore; Liverini, Giovanna; Iossa, Susanna

    2014-01-01

    To explore the effect of a fructose-rich diet on morphological and functional changes in white adipose tissue (WAT) that could contribute to the development of insulin resistance. Adult sedentary rats were fed a fructose-rich diet for 8 weeks. Glucose tolerance test was carried out together with measurement of plasma triglycerides, non-esterified fatty acids and lipid peroxidation. In subcutaneous abdominal and intra-abdominal WAT, number and size of adipocytes together with cellular insulin sensitivity and lipolytic activity were assessed. Rats fed a fructose-rich diet exhibited a significant increase in plasma insulin, triglycerides, non-esterified fatty acids and lipid peroxidation, together with significantly increased body lipids and epididymal and mesenteric WAT, compared to controls. Mean adipocyte volume in subcutaneous abdominal WAT was significantly lower, while mean adipocyte volume in intra-abdominal WAT was significantly higher, in rats fed a fructose-rich diet compared to controls. A significant increase in larger adipocytes and a significant decrease in smaller adipocytes were found in intra-abdominal WAT in rats fed a fructose-rich diet compared to controls. Insulin's ability to inhibit lipolysis was blunted in subcutaneous abdominal and intra-abdominal adipocytes from fructose-fed rats. Accordingly, lower p-Akt/Akt ratio was found in WAT in rats fed a fructose-rich diet compared to controls. Long-term consumption of high levels of fructose elicits remarkable morphological and functional modifications, particularly in intra-abdominal WAT, that are highly predictive of obesity and insulin resistance and that contribute to the worsening of metabolic alterations peculiar in a fructose-rich, hypolipidic diet.

  4. Endocrine disruptors found in food contaminants enhance allergic sensitization through an oxidative stress that promotes the development of allergic airway inflammation

    Energy Technology Data Exchange (ETDEWEB)

    Kato, Takuma, E-mail: katotaku@doc.medic.mie-u.ac.jp [Department of Cellular and Molecular Immunology, Mie University Graduate School of Medicine (Japan); Tada-Oikawa, Saeko [Department of Environmental and Molecular Medicine, Mie University Graduate School of Medicine (Japan); Wang, Linan [Department of Cellular and Molecular Immunology, Mie University Graduate School of Medicine (Japan); Murata, Mariko [Department of Environmental and Molecular Medicine, Mie University Graduate School of Medicine (Japan); Kuribayashi, Kagemasa [Department of Cellular and Molecular Immunology, Mie University Graduate School of Medicine (Japan)

    2013-11-15

    In the past few decades, there has been a significant increase in incidence of allergic diseases. The hygiene hypothesis may provide some clues to explain this rising trend, but it may also be attributable to other environmental factors that exert a proallergic adjuvant effects. However, there is limited information on the risks of developing allergic asthma and related diseases through the ingestion of environmental chemicals found in food contaminants. In the present study, we have shown that oral administration of tributyltin, used as a model environmental chemical, induced oxidative-stress status in the bronchial lymph node, mesenteric lymph node and spleen, but not in the lung, where the initial step of allergic asthma pathogenesis takes place. Mice exposed to tributyltin exhibited heightened Th2 immunity to the allergen with more severe airway inflammation. Tributyltin also induced Treg cells apoptosis preferentially over non-Treg cells. All these effects of tributyltin exposure were canceled by the administration of glutathione monoethyl ester. Meanwhile, tributyltin did not affect airway inflammation of mice transferred with allergen-specific Th2 cells. Collectively, these results suggest that tributyltin exerts its pathological effect during the sensitization phase through oxidative stress that enhances the development of allergic diseases. The current study dissects the pathogenic role of oxidative stress induced by oral exposure to an environmental chemical during the sensitization phase of allergic airway inflammation and would be important for developing therapeutics for prevention of allergic diseases. - Highlights: • Oral exposure to TBT exacerbates airway inflammation. • TBT induces oxidative stress in secondary lymphoid organs, but not in the lung. • TBT preferentially induces regulatory T cell apoptosis over non-Treg cells. • TBT does not enhance pre-existing airway inflammation in sensitized mice. • Chemicals in food contaminants

  5. The Eugenides Foundation Interactive Exhibition of Science and Technology

    Science.gov (United States)

    Kontogiannis, Ioannis

    2010-01-01

    The Interactive Exhibition of Science and Technology is installed in an area of 1200 m2 at the Eugenides Foundation. 65 interactive exhibits, designed by the "Cites des Science et de l' Industrie" are organised in themes, stimulate the visitors' mind and provoke scientific thinking. Parallel activities take place inside the exhibition, such as live science demonstrations, performed by young scientists. Extra material such as news bulletins (short news, science comics and portraits), educational paths and treasure-hunting based games, all available online as well, are prepared on a monthly basis and provided along with the visit to the exhibition. Through these exhibits and activities, scientific facts are made simple and easy to comprehend using modern presentation tools. We present details on how this exhibition acts complementary to the science education provided by schools, making it a highly sophisticated educational tool.

  6. CERN exhibition attracts over 100,000 visitors in Belgrade

    CERN Multimedia

    Antonella Del Rosso

    2012-01-01

    “This must be an 'all-time record',” says Ray Lewis, CERN travelling exhibition manager. “In all my time with the various permanent and travelling exhibitions that have taken place locally and within our Member States I have never experienced such figures.”   Zarko Obradovic (left), Serbian Minister of Education, Science and Technology, and Rolf Heuer (right), CERN Director-General, at the CERN travelling exhibition in Belgrade. Indeed, in approximately 20 days of exhibition time about 120,000 people, mainly school visiters and the general public, visited the 100 m2 CERN mini-exhibition. It was set up in the centre of Belgrade in October, in association with the meeting of the Restricted European Committee for Future Accelerators (RECFA). After attending the RECFA meeting, CERN's Director-General Rofl Heuer opened the CERN exhibition on the evening of 19 October. Lectures about CERN were held every afternoon, and two public de...

  7. Motion Capture: Drawing and the Moving Image Exhibition, Letterkenny, Donegal.

    OpenAIRE

    Fay, Brian

    2013-01-01

    Motion Capture Drawing & the Moving Image A GLUCKSMAN exhibition, touring to Regional Cultural Centre, Letterkenny, Co. Donegal, 22 January – 9 March 2013 Supported by a Touring and Dissemination award from the Arts Council of Ireland/An Chomhairle Ealaíon. Motion Capture is an exhibition that explores the relationship of movement in two artistic media: drawing and the moving image. Featuring artworks from the mid-twentieth century through to the present day, the exhibition emphasises the ...

  8. 77 FR 31420 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2012-05-25

    ... abroad for temporary exhibition within the United States, are of cultural significance. The objects are... Ereli, Principal Deputy Assistant Secretary, Bureau of Educational and Cultural Affairs, Department of...

  9. Data Collection Methods for Evaluating Museum Programs and Exhibitions

    Science.gov (United States)

    Nelson, Amy Crack; Cohn, Sarah

    2015-01-01

    Museums often evaluate various aspects of their audiences' experiences, be it what they learn from a program or how they react to an exhibition. Each museum program or exhibition has its own set of goals, which can drive what an evaluator studies and how an evaluation evolves. When designing an evaluation, data collection methods are purposefully…

  10. Presentation and exhibition activities for promoting theexportof transport services

    Directory of Open Access Journals (Sweden)

    Darya Vladimirovna Nesterova

    2012-03-01

    Full Text Available Development of presentation and exhibition activities is considered as an important factor in providing new competitive advantages at the strategic markets for exporting of transportation services. A specific role for exhibition activities as a factor to overcome market failures arose from imperfect information and incomplete markets is displayed. Exhibitions are considered as a true reflection of most market parameters, as a means to get correct information concerning market capacity and its borders, as an instrument to access to new markets. At the firm level presentation and branding activities should be considered as a modern technology (especially it concerns Russian companies which provide to hold up already existed markets and to conquer new ones. Presentation and branding activities are an effective technology to promote company trade-mark, competitive advantages for market demand increasing. Comparative analysis of the main exhibitions on transport and logistics issues is fulfilled on the data basecollected by authors. Data observes geographical distribution of transport exhibition and exhibition facilities development at several regions for the last years. The analyses allow to revealing a geographical structure of the exhibitions and its distribution by type of transport. The most promising and economically favorable exhibition areas for the promotion of Russian transport services are shown.

  11. Making Your Trade Fair Exhibit More Productive and More Interesting.

    Science.gov (United States)

    Newcomb, Jack

    1982-01-01

    Suggestions for producing a successful exhibit booth include the following: the effectiveness of an exhibit depends on the effectiveness of the people staffing it; avoid games and unrelated giveaway items; demonstrate product in the booth; give special attention to existing customers; and make literature available only from the booth personnel.…

  12. When Places Speak: Developing an Exhibit in Partnership

    Directory of Open Access Journals (Sweden)

    Tasoulla Hadjiyanni

    2016-10-01

    Full Text Available This essay outlines the partnership that developed among a faculty member, students, two photographers, University of Minnesota units, and a multitude of community collaborators to develop the When Places Speak exhibit. Featuring places enmeshed in sex trafficking in Minnesota, the exhibit sheds light on the instrumental role partnerships can play in overcoming domination.

  13. The Signatures of the Invisible exhibition in Geneva

    CERN Multimedia

    Patrice Loïez

    2002-01-01

    The artist Paola Pivi with her work at the Signatures of the Invisible exhibition in Geneva during February 2002. This piece with needles suspended on nylon thread 'detects' people as they approach. The exhibition was for art inspired by research carried out at CERN.

  14. CERN Industrials Exhibitions - Over 30 Years of Tradition

    CERN Multimedia

    2001-01-01

    Industrial exhibitions have been part of the CERN landscape for 33 years. At least once each year several companies from the same country come to CERN to present their products and services. Now, a new scheme of one-day visits is giving potential exhibitors at CERN a lighter option. The United Kingdom inaugurated the Industrial Exhibitions in 1968, and it wasn't till 1971 that other countries staged exhibitions at CERN. This photo was taken in 1969, at the second British exhibition, where 16 companies were present. Four years after joining CERN, Poland inaugurated its first exhibition at CERN in 1995 in the presence of the former Director-General Chris Llewellyn-Smith. Almost all the Member States have held industrial exhibitions at the Organization. May '68 wasn't only revolutionary in Paris. For the very first time, an industrial exhibition took place at CERN. Great Britain was first to come with eight companies and remains until this day the most devoted country to the programme with 17 exhibitions and ...

  15. 78 FR 68479 - Federal Advisory Committee on International Exhibitions Meeting

    Science.gov (United States)

    2013-11-14

    ... From the Federal Register Online via the Government Publishing Office NATIONAL FOUNDATION ON THE ARTS AND THE HUMANITIES Federal Advisory Committee on International Exhibitions Meeting AGENCY..., notice is hereby given that one meeting of the Federal Advisory Committee on International Exhibitions...

  16. 46 CFR 169.805 - Exhibition of merchant mariner credentials.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Exhibition of merchant mariner credentials. 169.805 Section 169.805 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Operations § 169.805 Exhibition of merchant mariner credentials. Officers on any vessel...

  17. Informing the Development of Science Exhibitions through Educational Research

    Science.gov (United States)

    Laherto, Antti

    2013-01-01

    This paper calls for greater use of educational research in the development of science exhibitions. During the past few decades, museums and science centres throughout the world have placed increasing emphasis on their educational function. Although exhibitions are the primary means of promoting visitors' learning, educational research is not…

  18. Outreach to Science Faculty and Students through Research Exhibitions

    Science.gov (United States)

    Chan, Tina; Hebblethwaite, Chris

    2014-01-01

    Penfield Library at the State University of New York at Oswego (SUNY Oswego) has a gallery exhibit space near the front entrance that is used to showcase student-faculty research and art class projects. This article features the library's outreach efforts to science faculty and students through research exhibitions. The library held an exhibition…

  19. Exhibitions: Connecting Classroom Assessment with Culminating Demonstrations of Mastery

    Science.gov (United States)

    Davidson, Jill

    2009-01-01

    Exhibitions are public demonstrations of mastery that occur at culminating moments, such as at the conclusion of a unit of study, the transition from one level of schooling to the next, and graduation. Exhibitions require students to speak publicly, use evidence, present engaging visual displays, and otherwise demonstrate mastery to educators,…

  20. Modelling the Future: Exhibitions and the Materiality of Education

    Science.gov (United States)

    Lawn, Martin, Ed.

    2009-01-01

    The role of World Exhibitions in the 19th and early 20th centuries was to confirm a relation between the nation state and modernity. As a display about industries, inventions and identities, the Exhibition, in a sense, put entire nations into an elevated, viewable space. It is a significant element in modernity as comparisons can be made, progress…

  1. 78 FR 21979 - Federal Advisory Committee on International Exhibitions Meeting

    Science.gov (United States)

    2013-04-12

    ... From the Federal Register Online via the Government Publishing Office NATIONAL FOUNDATION ON THE ARTS AND THE HUMANITIES Federal Advisory Committee on International Exhibitions Meeting AGENCY..., notice is hereby given that one meeting of the Federal Advisory Committee on International Exhibitions...

  2. Sponsorship and exhibitions at Nordic science centres and museums

    DEFF Research Database (Denmark)

    Davidsson, Eva; Sørensen, Helene

    2010-01-01

    Science and technology centres (STC) and science museums tend increasingly to rely on external economic support in order to create new exhibitions. But in what ways may the economic situation affect what is presented in their exhibitions? This article aims to explore how staff members consider...

  3. Using Museum Exhibits: An Innovation in Experiential Learning

    Science.gov (United States)

    Das, Satarupa

    2015-01-01

    Museum exhibits can be a tool in experiential learning. While instructors have documented various methods of experiential learning, they have not sufficiently explored such learning from museum exhibits. Museum researchers, however, have long found a satisfying cognitive component to museum visits. This paper narrates the author's design to…

  4. CERN’s travelling exhibition goes to Austria

    CERN Multimedia

    Mélissa Lanaro

    2011-01-01

    Since April 2009 CERN’s travelling exhibition has been touring through some of the Organization's Member States. After Italy and Denmark it has been on show since February at Austria’s Hartberg Ökopark, a very popular science museum situated some one hundred kilometres from Vienna. To coincide with the CERN exhibition, Austria’s scientific community has organised a series of events for the general public which have had marked success. The exhibition's next destination will be Portugal and preparations are already underway to ensure that it is another resounding success   The travelling exhibition was designed in collaboration with the University of Geneva, as part of the celebrations for its 450th anniversary, and has already notched up a good number of kilometres as it travels from country to country. “In 2010 the exhibition already had around 55,000 visitors,” explains Rolf Landua, who heads the Education Group. Since its inauguration ...

  5. ALDH2 and ADH1B interactions in retrospective reports of low-dose reactions and initial sensitivity to alcohol in Asian American college students.

    Science.gov (United States)

    Luczak, Susan E; Pandika, Danielle; Shea, Shoshana H; Eng, Mimy Y; Liang, Tiebing; Wall, Tamara L

    2011-07-01

    A mechanistic model has been proposed for how alcohol-metabolizing gene variants protect individuals from the development of alcohol use disorders, with heightened sensitivity to alcohol being an early step (endophenotype) in this model. This study was designed to determine whether possession of 2 alcohol-metabolizing genes variations, the aldehyde dehydrogenase ALDH2*2 allele and the alcohol dehydrogenase ADH1B*2 allele, was associated with self-reported sensitivity to alcohol at low doses and at initial use. Asian-American college students (N=784) of Chinese and Korean descent were genotyped at the ALDH2 and ADH1B loci and assessed for lifetime alcohol symptoms following 1 or 2 drinks and level of response to alcohol during the first 5 lifetime drinking episodes. Participants who had an ALDH2*2 allele were more likely to report experiencing all 6 low-dose symptoms and having heightened initial response to alcohol. An interaction was found between ALDH2*2 and ADH1B*2, with ADH1B*2 being associated with heightened self-reported sensitivity to alcohol only in individuals who also possessed 1 ALDH2*2 allele. These findings suggest the effects of ADH1B*2 may be felt more strongly in Asians who already have some heightened sensitivity to alcohol from possessing 1 ALDH2*2 allele, but who are not too sensitized to alcohol from possessing 2 ALDH2*2 alleles. These results offer additional insight into the discrepant findings that have been reported in the literature for the role of ADH1B*2 in response to alcohol and the development of alcohol-related problems. Copyright © 2011 by the Research Society on Alcoholism.

  6. Cosmic Origins: A Traveling Science Exhibit and Education Program

    Science.gov (United States)

    Dusenbery, P. B.; Morrow, C. A.; Harold, J.

    2003-12-01

    The Space Science Institute of Boulder, Colorado, is developing a 3,000 square-foot traveling exhibition, called Cosmic Origins, which will bring origins-related research and discoveries to students and the American public. Cosmic Origins will have three interrelated exhibit areas: Star Formation, Planet Quest, and Search for Life. Exhibit visitors will explore the awesome events surrounding the birth of stars and planets; they will join scientists in the hunt for planets outside our solar system including those that may be in "habitable zones" around other stars; and finally they will be able to learn about the wide range of conditions for life on Earth and how scientists are looking for signs of life beyond Earth. Visitors will also learn about the tools scientists' use, such as space-based and ground-based telescopes, to improve our understanding of the cosmos. Exhibit content will address age-old questions that form the basis of NASA's Origins and Astrobiology programs: Where did we come from? Are we alone? In addition to the exhibit, our project will include workshops for educators and docents at host sites, as well as a public Web site that will use a virtual rendering of exhibit content. The exhibit's size will permit it to visit medium sized museums in underserved regions of the country. It will begin its 3-year tour to 9 host museums and science centers in early 2005. A second 3-year tour is also planned for 2008. The Association of Science-Technology Centers (ASTC) will manage the exhibit's national tour. Current partners in the Cosmic Origins project include ASTC, the Denver Museum of Nature and Science, Lawrence Hall of Science, NASA Astrobiology Institute, NASA missions (e.g. PlanetQuest, SIRTF, and Kepler), New York Hall of Science, the SETI Institute, and the Space Telescope Science Institute. The exhibition is supported by grants from NSF and NASA. This report will focus on the Planet Quest part of the exhibition.

  7. Interpersonal rejection sensitivity mediates the associations between peer victimization and two high-risk outcomes.

    Science.gov (United States)

    Williams, Caitlin A; Doorley, James D; Esposito-Smythers, Christianne

    2017-10-01

    Previous research has demonstrated a strong link between peer victimization and suicidal ideation and aggression. This study examined interpersonal rejection sensitivity as a mediator of these associations. Diagnostic interviews and assessments were administered to 80 psychiatrically hospitalized adolescents and their parents. Interpersonal rejection sensitivity mediated the association between peer victimization and suicidal ideation as well as aggression after controlling for participant sex and mood disorder diagnosis. Interpersonal rejection sensitivity influences the relation between peer victimization and mental health symptoms, including suicidal ideation and aggression. Assessing for and addressing heightened interpersonal rejection sensitivity among adolescents who have been victimized by peers may decrease the likelihood of negative mental health outcomes. Implications, especially for clinicians, are further discussed.

  8. Trait rejection sensitivity is associated with vigilance and defensive response rather than detection of social rejection cues

    Directory of Open Access Journals (Sweden)

    Taishi eKawamoto

    2015-10-01

    Full Text Available Prior studies suggest that psychological difficulties arise from higher trait rejection sensitivity (RS—heightened vigilance and differential detection of social rejection cues and defensive response to. On the other hand, from an evolutionary perspective, rapid and efficient detection of social rejection cues can be considered beneficial. We conducted a survey and an electrophysiological experiment to reconcile this seeming contradiction. We compared the effects of RS and rejection detection capability (RDC on perceived interpersonal experiences (Study 1 and on neurocognitive processes in response to cues of social rejection (disgusted faces; Study 2. We found that RS and RDC were not significantly related, although RS was positively related to perceived social rejection experiences and RDC was positively related to perceived social inclusion experiences. Event-related brain potentials (ERPs revealed that higher RS was related to cognitive avoidance (i.e., P1 and heightened motivated attention (i.e., late positive potential: LPP, but not to facial expression encoding (i.e., N170 toward disgusted faces. On the other hand, higher RDC was related to heightened N170 amplitude, but not to P1 and LPP amplitudes. These findings imply that sensitivity to rejection is apparently distinct from the ability to detect social rejection cues and instead reflects intense vigilance and defensive response to those cues. We discussed an alternative explanation of the relationship between RS and RDC from a signal detection perspective.

  9. Eye gaze tracking reveals heightened attention to food in adults with binge eating when viewing images of real-world scenes.

    Science.gov (United States)

    Popien, Avery; Frayn, Mallory; von Ranson, Kristin M; Sears, Christopher R

    2015-08-01

    Individuals with eating disorders often exhibit food-related biases in attention tasks. To assess the engagement and maintenance of attention to food in adults with binge eating, in the present study, eye gaze tracking was used to compare fixations to food among non-clinical adults with versus without binge eating while they viewed images of real-world scenes. Fifty-seven participants' eye fixations were tracked and recorded throughout 8-second presentations of scenes containing high-calorie and/or low-caloriefood items in various settings (restaurants, social gatherings, etc.). Participants with binge eating fixated on both high-calorie and low-calorie food items significantly more than controls, and this was the case when the high- and low-calorie food items were presented in the same image and in different images. Participants with binge eating also fixated on food items significantly earlier in the presentations. A time course analysis that divided each 8-second presentation into 2-second intervals revealed that participants with binge eating attended to food items more than control participants throughout the 8-second presentation. These results have implications for theory regarding the initiation and maintenance of binge eating. Copyright © 2015 Elsevier Ltd. All rights reserved.

  10. Maine Exhibitions Assessment Project, September 2002-June 2004. Technical Criteria for Including Exhibition Assessments in Comprehensive Local Assessment Systems. Revised.

    Science.gov (United States)

    Maine Department of Education, 2004

    2004-01-01

    In September 2002, the Maine Department of Education began organizing an Exhibition Assessment Advisory Committee whose purpose it was to consider meaningful ways to include exhibition assessments in comprehensive local assessment systems. School administrators were invited to participate and/or nominate practitioners in their districts to become…

  11. 7 CFR Exhibit C to Subpart C of... - Checklist of Visual Exhibits and Documentation for RRH, RCH, and LH Proposals

    Science.gov (United States)

    2010-01-01

    ... RRH, RCH, and LH Proposals C Exhibit C to Subpart C of Part 1924 Agriculture Regulations of the... REPAIR Planning and Performing Site Development Work Pt. 1924, Subpt. C, Exh. C Exhibit C to Subpart C of... the required information will be sufficient. C. Property Survey Map. A current survey map of the...

  12. Developing Exhibit-based, Interactive Web Sites to Communicate Science

    Science.gov (United States)

    Dusenbery, P. B.; Harold, J.

    2003-12-01

    New technologies are transforming the Web from a static medium to an interactive environment with tremendous potential for informal education and inquiry-based investigations. ASTC, the trade association of science museums, gave its 2000 innovation award to the Exploratorium's Web page rather than a physical exhibit. The increased power of the Web as an informal learning tool is partly the result of technologies (such as Java, Flash and Shockwave) that allow the development of inquiry-based, interactive experiences. Web site visitors can now "learn science by doing science." This report features two online projects funded by NSF and NASA: MarsQuest Online and the Space Weather Center. TERC, the Space Science Institute, and NASA's Jet Propulsion Laboratory are developing MarsQuest Online, an interactive, exploration-based Web site that extends the reach and scope of the MarsQuest exhibit. The Space Weather Center Web site is based on the Space Weather Center exhibit that was developed in partnership with scientists and educators at NASA/GSFC. Both exhibits represent a tremendous, collaborative effort by scientists, educators, and designers to communicate the essentials of Mars science and space weather to the public. As such, the graphics, text, and story developed for the exhibits represent a valuable resource that will provide the framework and base content for the public site. Given that framework, the Web sites can then expand both the content and audience of the exhibits in key ways. In particular, the sites will 1) extend the reach of the exhibit by making it available online, 2) extend the scope of the exhibit, linking to the latest imagery and results from ground and space-based missions, and 3) provide support and follow-up for the exhibit education programs, while making materials available to more teachers, parents, and museum educators and docents.

  13. Postmodern Exhibition Discourse: Anthropological Study of an Art Display Case.

    Directory of Open Access Journals (Sweden)

    Marta Wieczorek

    2015-12-01

    Full Text Available The article studies tendencies in contemporary museum exhibitions and art display trends. While analysing current status quo of art in the museum context, it discusses the limitations of curatorial impact on the audience perception of the displayed objects. The paper presents a case study of a permanent museum exhibition with an added performance element. As argued in the article, such approach allows a stratified narrative and provokes a dialogue between the audience, performers, and curators, fully reflecting postmodern polyphonic tendency. The aim of the article is to comment on postmodern trends in museology, the status of the displayed art (object, and contemporary exhibition identity.

  14. Temperamental sensitivity to early maltreatment and later family cohesion for externalizing behaviors in youth adopted from foster care.

    Science.gov (United States)

    Tung, Irene; Noroña, Amanda N; Lee, Steve S; Langley, Audra K; Waterman, Jill M

    2017-11-02

    Children in foster care frequently have histories of physical/sexual abuse and neglect, increasing their risk for externalizing behaviors (EB; e.g., aggression). According to the differential susceptibility theory, children with reactive temperaments (e.g., negative emotionality) may be particularly vulnerable to early maltreatment, but may also benefit the most from environmental enrichment such as family cohesion. In a high-risk longitudinal sample of 82 children adopted from foster care in Los Angeles County from 1996 and 2001, we examined predictions of EB from childhood to adolescence/young adulthood from temperament, preadoption maltreatment, and adoptive family cohesion. Overall, results from generalized linear models and generalized estimating equations (GEE) did not support differential susceptibility theory - specifically, youth with early reactive temperament did not exhibit heightened sensitivity to maltreatment nor to later adoptive family cohesion. Instead, reactive temperament was associated with higher EB at initial adoptive placement and escalating EB across childhood, controlling for age, gender, race-ethnicity, preadoption maltreatment, and adoptive family cohesion. Preadoption maltreatment history was unrelated to baseline EB, although sexual abuse history predicted escalating childhood EB post-adoption, whereas exposure to family violence (e.g., domestic violence) inversely predicted EB over time. By late adolescence/young adulthood 11-15 years post-adoption, rates of arrest and substance use in this sample were relatively comparable to normative populations of youth, although older age of adoption predicted more substance use in late adolescence/young adulthood. Findings highlight early reactive temperament and preadoption maltreatment as important risk factors to target for ameliorating patterns of EB growth in the first few years of adoption. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. Strain-dependent variations in visceral sensitivity: relationship to stress, anxiety and spinal glutamate transporter expression.

    Science.gov (United States)

    Moloney, R D; Dinan, T G; Cryan, J F

    2015-04-01

    Responses to painful stimuli differ between populations, ethnic groups, sexes and even among individuals of a family. However, data regarding visceral pain are still lacking. Thus, we investigated differences in visceral nociception across inbred and outbred mouse strains using colorectal distension. Anxiety and depression-like behaviour were assessed using the open field and forced swim test as well as the corticosterone stress response. Possible mechanistic targets [excitatory amino acid transporter (EAAT-1), brain-derived neurotrophic factor (BDNF) and 5HT1A receptor] were also assessed using quantitative real-time polymerase chain reaction. Adult, male, inbred and outbred mouse strains were used in all assays (inbred strains; CBA/J Hsd, C3H/HeNHsd, BALB/c OlaHsd, C57 BL/6JOlaHsd, DBA/2J RccHsd, CAST/EiJ, SM/J, A/J OlaHsd, 129P2/OlaHsd, FVB/NHan Hsd and outbred strains: Swiss Webster, CD-1). mRNA expression levels of EAAT-1, BDNF and 5HT1A receptor (HTR1A) were quantified in the lumbosacral spinal cord, amygdala and hippocampus. A significant effect of strain was found in visceral sensitivity, anxiety and depressive-like behaviours. Strain differences were also seen in both baseline and stress-induced corticosterone levels. CBA/J mice consistently exhibited heightened visceral sensitivity, anxiety behaviour and depression-like behaviour which were associated with decreased spinal EAAT-1 and hippocampal BDNF and HTR1A. Our results show the CBA/J mouse strain as a novel mouse model to unravel the complex mechanisms of brain-gut axis disorders such as irritable bowel syndrome, in particular the underlying mechanisms of visceral hypersensitivity, for which there is great need. Furthermore, this study highlights the importance of genotype and the consequences for future development of transgenic strains in pain research. © 2015 John Wiley & Sons Ltd and International Behavioural and Neural Genetics Society.

  16. Heightened biological uptake of polybrominated diphenyl ethers relative to polychlorinated biphenyls near-source revealed by sediment and plankton profiles along a coastal transect in British Columbia.

    Science.gov (United States)

    Desforges, Jean-Pierre W; Dangerfield, Neil; Shaw, Patrick D; Ross, Peter S

    2014-06-17

    Polychlorinated biphenyl (PCB) and polybrominated diphenyl ether (PBDE) concentrations and profiles in paired sediment-plankton samples were determined along a 500 km transect in coastal British Columbia, Canada. PCB and PBDE levels in sediment were both greater in the industrialized Strait of Georgia than in remote northern sites and exhibited parallel spatial trends. In plankton, recent-use PBDE levels were higher near-source, while levels of legacy PCBs were uniform across sites. Principal component analysis of 95 PCB congeners illustrated the influence of proximity to source (i.e., latitude) on congener patterns for both matrices (sediment, r(2) = 0.52, p = 0.012; plankton, r(2) = 0.59, p = 0.016). The PCB pattern in plankton grew lighter with latitude, but the opposite pattern in sediments suggested that temperature-related fractionation, sediment processes, and basin-wide oceanography had divergent effects on each matrix. Biota-sediment accumulation factors (BSAFs) were greater for PBDEs than PCBs, but spatial profiles were similar; PCBs and PBDEs were near equilibrium in remote atmospherically driven sites (BSAF = 1.7 and 1.3) but accumulated preferentially in sediments at source-driven sites (BSAF = 0.2 and 0.4). The influences of particle-binding and hydrophobicity on the aquatic fate of PCBs and PBDEs was evident by the strong influence of log KOW on congener-specific BSAFs (PCBs, r(2) = 0.18 p < 0.001; PBDEs, r(2) = 0.61 p < 0.001). While biotic uptake of PCBs has become spatially uniform in coastal BC because of dilution over time, biomagnification of PBDEs remains higher in industrialized waters.

  17. Special issue on the teenage brain: Sensitivity to social evaluation.

    Science.gov (United States)

    Somerville, Leah H

    2013-04-01

    Relative to childhood, peer relationships take on a heightened importance during adolescence. Might adolescents be highly attuned to information that concerns when and how they are being evaluated, and what their peers think of them? This review evaluates how continuing brain development - which influences brain function - partially explains or reflects adolescents' attunement to social evaluation. Though preliminary, evidence is mounting to suggest that while processing information relevant to social evaluation and the internal states of other people, adolescents respond with greater emotional intensity and corresponding nonlinear recruitment of socioaffective brain circuitry. This review highlights research findings that relate trajectories of brain development and social behavior, and discusses promising avenues of future research that will inform how brain development might lead adolescents sensitized to social evaluation.

  18. The Role of the Freelance Curator in an Art Exhibition

    National Research Council Canada - National Science Library

    Ieva Vitkauskaite

    2015-01-01

      This article analyses the role of the freelance curator in an art exhibition. The first part of the article conceptualises the notion of the modern curator and surveys the categories of curators...

  19. British Museum Exhibition Review: The Jericho Skull, Creating an Ancestor

    Directory of Open Access Journals (Sweden)

    Cara Hirst

    2017-03-01

    Full Text Available The temporary exhibit at the British Museum, open 15th December-19th February, and located to the right of the main entrance in the Raymond and Beverly Sackler Gallery (Room 59; is dedicated to a single Neolithic crania from Jericho, known as the Jericho Skull. This exhibit demonstrates the value of relatively recent technologies in archaeological research, highlighting the previously hidden information made possible through CT scanning and the value of these methods in both archaeological research but also in communicating archaeology in a visually stimulating manner which allows an exhibit to take a single item, and create an in depth exhibit featuring both the original material and two cranial 3D prints along with a facial reconstruction.

  20. Ballroom Music Spillover into a Beluga Whale Aquarium Exhibit

    Directory of Open Access Journals (Sweden)

    Peter M. Scheifele

    2012-01-01

    Full Text Available It is not uncommon for modern aquaria to be built with special entertainment areas. There are no known measurements of sound spillover from such entertainment areas into underwater animal exhibits. Entertainment organizations typically prefer to play music for events at 95 and 100 dBA in a ballroom at Georgia Aquarium. Concern over the potential effects of the music and noise on animals in adjacent exhibits inspired an initial project to monitor and compare sound levels in the adjacent underwater exhibits against the typical in-air sound levels of the ballroom. Measured underwater noise levels were compared to modeled levels based on finite element analysis and plane wave transmission loss calculations through the acrylic viewing window. Results were compared with the model to determine how, if at all, the ambient noise level in the Cold Water Quest exhibit changed as a result of music played in the ballroom.

  1. Translating land use science to a museum exhibit

    Science.gov (United States)

    Arce-Nazario, Javier A.

    2016-01-01

    For land use science to engage the general public it must successfully translate its concepts and conclusions and make them public outside of traditional scientific venues. Here we explore science-art exhibits, which blend artistic presentations with specific scientific data or themes, as a possible effective way of communicating scientific information and disrupting misconceptions. We describe the process of producing a science-art exhibit on remote sensing and Puerto Rican landscape history from 1937 to the present, sited at a rural Puerto Rican community museum, and examine the visitor experience and educational outcomes of the museum exhibit through analysis of survey data. The exhibit project engaged undergraduate students from a variety of academic backgrounds, introduced land use science concepts to the public in an engaging format, and was effective at reshaping visitors’ misconceptions of Puerto Rico's landscape change history. PMID:28191029

  2. Asian Martial Art Exhibitions at the Swiss Castle of Morges

    Directory of Open Access Journals (Sweden)

    Nicolae Gothard Bialokur

    2012-07-01

    Full Text Available This article reports on two unique cultural exhibitions (2005 and 2007 held in Morges, Switzerland. The main theme for these exhibitions was Asian martial arts with a focus on those from Japan, including presentations by notable masters in aikido, karate, judo, kyudo, iaido, kenjutsu, jodo, juttejutsu, kusarigamajutsu, naginatajutsu, tameshigiri, and kendo. On exhibit were artifacts from Morges Castle museum collections as well as numerous ancient objects borrowed specifically for these exhibitions from other Swiss museums and private collections. There was also a lecture on Japanese sword collecting and care, and presentations of Japanese dance, flower arranging (ikebana, the art of tea (châ no yu, châdo, paper folding (origami, traditional kimono dress, and detailed demonstrations on the manufacture of bladed weapons. Text and photography were arranged to record these events for this article, showing how excellent organization and cooperation can introduce high-quality martial traditions to the public.

  3. Editorial Notes: Exhibition Complex: Displaying People, Identity, and Culture

    Directory of Open Access Journals (Sweden)

    Amy Cymbala

    2014-06-01

    Full Text Available Editorial Notes on section relating to submissions from the symposium Exhibition Complex: Displaying People, Identity, and Culture held October 18-20, 2012 at the Carnegie Museum of Art, Pittsburgh, Pennsylvania.

  4. Knowledge Generation in Technology-Enhanced Health Exhibitions

    DEFF Research Database (Denmark)

    Magnussen, Rikke; Kharlamov, Nikita; Zachariasssen, Maria

    2016-01-01

    This paper presents results from eye-tracking studies of audience interaction and knowledge generation in the technology-enhanced health promotion exhibition PULSE at a science centre in Copenhagen, Denmark. The main purpose of the study was to understand what types of knowledge audiences build...... in health promotion exhibitions designed to include direct physical interaction. The current study is part of the larger PULSE project, which aims to develop innovative health promotion activities that include a science museum exhibition as a key setting. The primary target group is families with children...... the science centre. Eye-tracking glasses and qualitative interviews were used to collect data. Before entering the PULSE exhibition, one adult in each family group and one child in each school group were asked to wear eye-tracking equipment while interacting with various installations. Primarily adult test...

  5. Exhibit celebrates five decades of women in engineering

    OpenAIRE

    Gilbert, Karen

    2007-01-01

    "Petticoats and Slide Rules," a historical exhibit on women in engineering from the Society of Women Engineers (SWE), is currently on display in the lobby of Hancock 100 and will remain at Virginia Tech through March of 2007.

  6. "Britain at CERN" exhibition, from 14 to 17 November 2000

    CERN Multimedia

    Patrice Loïez

    2000-01-01

    H.E. Mr. Christopher Hulse, Ambassador of United Kingdom in Switzerland, CERN Director General Luciano Maiani, Sir David Wright, Chief Executive of British Trade International and Roger Cashmore, CERN Director of research visit the Britain at CERN exhibition

  7. Exhibition “Space. Information. Research.”

    National Research Council Canada - National Science Library

    Darko Šiško

    2015-01-01

    The exhibition Space. Information. Research. was opened in ZgForum, premises of the City Office of Strategic Planning and Development of the City of Zagreb for communication with professional and the general public on December 18, 2014...

  8. 5 CFR 2610.202 - Net worth exhibit.

    Science.gov (United States)

    2010-01-01

    ....202 Administrative Personnel OFFICE OF GOVERNMENT ETHICS ORGANIZATION AND PROCEDURES IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT Information Required From Applicants § 2610.202 Net worth exhibit. (a... Government Ethics' established procedures under the Freedom of Information Act. ...

  9. Dutch hi-tech companies exhibit at CERN

    CERN Multimedia

    Roberto Cantoni

    2010-01-01

    Twenty-seven Dutch companies will present the state of the art of their technological developments at the industrial exhibition Holland @ CERN from 8 to 11 November. The exhibition is designed to help strengthen the ties between fundamental science and Dutch industry.   The exhibition, supported by the Dutch Ministry of Economic Affairs and organised by the Netherlands National Institute for Subatomic Physics (Nikhef), in cooperation with the Foundation for Fundamental Research on Matter (FOM), the FOM Institute for Plasma Physics Rijnhuizen, and Dutch Scientific, an association of manufacturers of scientific equipment, will be held in the Main Building from 8 to11 November. “The last Holland @ CERN exhibition took place fifteen years ago”, says Robert Klöpping from Nikhef, Dutch Industrial Liaison Officer for CERN and Purchasing Advisor for Grenoble ESRF. “This kind of event is very important for Dutch industry as it allows us to show what Dutch companies c...

  10. [re]connect: Postmodern Documentary Photography Symposium and Traveling Exhibition

    OpenAIRE

    Kim Park, Min; Soon-Hwa, Oh

    2014-01-01

    The Postmodern Documentary Photography Exhibition features selected works from leading artists in the field of contemporary documentary photography. Their research focuses on finding new ways to portray 'truth' through photography, exploring new subject matter in unique locations, confronting societal expectations and social norms, and discovering new ways of enhancing documentary photography in the digital age. Min Kim Park, director of Postmodern Documentary Photography Exhibition, discusse...

  11. Female visualities: exhibitions of womens artists in Brazil and Portugal

    Directory of Open Access Journals (Sweden)

    Rebecca Corrêa e Silva

    2014-06-01

    Full Text Available This article presents one of the most known regenerating means, re-signifying and diffuser of visualities: the museum’s exhibitions. We intend to demonstrate the importance of this type of event in the museum’s context and for the society, from a perspective that integrates sociomuseology and gender. These concepts were applied to a comparative analysis of two new recents exhibitions dedicated to the artist women, seen in cases of Brazil and Portugal.

  12. Building Cultural Sensitivity and Interprofessional Collaboration Through a Study Abroad Experience.

    Science.gov (United States)

    Gilliland, Irene; Attridge, Russell T; Attridge, Rebecca L; Maize, David F; McNeill, Jeanette

    2016-01-01

    Study abroad (SA) experiences for health professions students may be used to heighten cultural sensitivity to future patients and incorporate interprofessional education (IPE). Two groups of nursing and pharmacy students participated in an SA elective over a 2-year period, traveling to China and India. Both groups improved significantly in knowledge, awareness, and skills following the travel experiences. Student reflections indicate that the SA experience was transformative, changing their views of travel, other cultures, personal environment, collaboration with other health professionals, and themselves. Use of SA programs is a novel method to encourage IPE, with a focus on enhancing the acquisition of cultural competency skills. Copyright 2016, SLACK Incorporated.

  13. Poster exhibitions at national conferences: education or farce?

    Science.gov (United States)

    Salzl, Gabriele; Gölder, Stefan; Timmer, Antje; Marienhagen, Jörg; Schölmerich, Jürgen; Grossmann, Johannes

    2008-02-01

    The so-called poster exhibition is an established element of medical meetings which often receives little attention. The aim of this study was to analyze the organization, acceptance and value of poster exhibitions. Interview based study conducted during the annual meeting of a German specialist medical conference. A total of 247 attendees, poster authors and "poster chairpersons" were interviewed. Attendance at poster exhibitions was documented, the poster review and award process analyzed, and abstracts assessed for redundancy of presentation. Participation in poster exhibitions was very low. Despite this, their scientific value was esteemed high by young authors and the poster chairpersons. Almost a third (29.4%) of posters had been displayed at other meetings. Several attendees (55.4%) and poster presenters (49.1%) say they would welcome the opportunity for personal one-on-one discussion at the poster in addition to poster viewing. The option of additional personal discussion with the poster presenter may lead to an increase of the rather modest participation of attendees at poster exhibitions. Poster exhibitions are of value in particular for young scientists and poster chairpersons.

  14. Exhibits Recognition System for Combining Online Services and Offline Services

    Science.gov (United States)

    Ma, He; Liu, Jianbo; Zhang, Yuan; Wu, Xiaoyu

    2017-10-01

    In order to achieve a more convenient and accurate digital museum navigation, we have developed a real–time and online-to-offline museum exhibits recognition system using image recognition method based on deep learning. In this paper, the client and server of the system are separated and connected through the HTTP. Firstly, by using the client app in the Android mobile phone, the user can take pictures and upload them to the server. Secondly, the features of the picture are extracted using the deep learning network in the server. With the help of the features, the pictures user uploaded are classified with a well-trained SVM. Finally, the classification results are sent to the client and the detailed exhibition’s introduction corresponding to the classification results are shown in the client app. Experimental results demonstrate that the recognition accuracy is close to 100% and the computing time from the image uploading to the exhibit information show is less than 1S. By means of exhibition image recognition algorithm, our implemented exhibits recognition system can combine online detailed exhibition information to the user in the offline exhibition hall so as to achieve better digital navigation.

  15. A mouse model of the schizophrenia-associated 1q21.1 microdeletion syndrome exhibits altered mesolimbic dopamine transmission

    DEFF Research Database (Denmark)

    Nielsen, Jacob; Fejgin, Kim; Sotty, Florence

    2017-01-01

    and basic functions such as reflexes, ASR, thermal pain sensitivity, and motor performance were unaltered. Similarly, anxiety related measures, baseline prepulse inhibition, and seizure threshold were unaltered. In addition to the central nervous system-related phenotypes, Df(h1q21)/+ mice exhibited reduced...

  16. Small-molecule compounds exhibiting target-mediated drug disposition - A case example of ABT-384.

    Science.gov (United States)

    An, Guohua; Liu, Wei; Dutta, Sandeep

    2015-10-01

    Nonlinearities are frequently encountered in pharmacokinetics, and they can occur when 1 or more processes of absorption, distribution, metabolism, and excretion are saturable. One special source of nonlinearity that has been noticed recently is the saturable binding of the drug to a high-affinity-low-capacity target, a phenomenon known as target-mediated drug disposition (TMDD). Although TMDD can occur in both small-molecule compounds and large-molecule compounds, the latter has received much more attention because of its high prevalence. With the development of more potent small-molecule drugs acting on highly specific targets and the availability of increasingly sensitive analytical techniques, small-molecule compounds exhibiting TMDD have been increasingly reported in the past several years. ABT-384 is a small-molecule drug candidate that exhibited significant nonlinear pharmacokinetics, potentially imparted by TMDD, in a first-in-human clinical trial conducted in healthy volunteers. Compared with published small-molecule compounds exhibiting TMDD, ABT-384 pharmacokinetic characteristics are more consistent with TMDD. To expand current knowledge of TMDD of small-molecule compounds and increase awareness of this interesting and clinically important phenomenon, in this review the general features of small-molecule compounds exhibiting TMDD are highlighted, with ABT-384 provided as an example. © 2015, The American College of Clinical Pharmacology.

  17. “Accelerating Science” exhibition zooms to Turkey

    CERN Multimedia

    Joannah Caborn Wengler

    2012-01-01

    'Accelerating Science', CERN’s travelling science outreach exhibition, has just arrived at the Middle East Technical University (METU) in Ankara, Turkey for a four-month stay there. This is the first time it has moved outside the circle of the Member States. The Turkish venue will inaugurate some new exhibits that have recently been developed by CERN’s software developers.   “It’s been a very busy day,” says Bilge Demirkoz, an associate professor of physics at METU and a member of AMS-02, who had been overseeing the unloading of the lorries when we spoke to her. “As the University doesn’t have a specific exhibition space, the CERN exhibits are going to be housed in the covered tennis courts just behind the cultural and congress centre. It’s a beautiful venue, and there are plenty of parking spaces.” The University has sent invitations to the exhibition to high schools and to about 100 ...

  18. Performative exhibition and its different modes of experience

    DEFF Research Database (Denmark)

    Schwarzbart, Judith

    The avant-gardes of the late 60s and 70s challenged many conventions associated with the (classical) modernist art exhibition such as: a static timeless display of autonomous objects, the spectator as a disembodied visual receptor, and the personal experience emphasizing the individual and never...... the social. The avant-gardes have not, however, let to the disappearance of a modernist exhibition format but to a proliferation of formats including some that are more performative in its character, which means: more dynamic, developing over time, with a higher degree of bodily and discursive exchange, and......, in some senses more social and contingent. My paper will discuss the performative exhibitions today. With departure in a recent presentation of Antonio Dias’s work Do it yourself: freedom territory (1968) at Istanbul Biennale, 2011, and a number of other examples I will address possible clashes between...

  19. American Telemedicine Association: First China (Tianjin International Telemedicine Technology Exhibition

    Directory of Open Access Journals (Sweden)

    Jordana Bernard

    2014-09-01

    Full Text Available With the support of Tianjin Municipal People’s Government and the People’s Government of Binhai New Area, the “First China (Tianjin International Telemedicine Technology Exhibition” hosted by the American Telemedicine Association (ATA, will be held October 28- 30, 2014 at the Tianjin Binhai International Convention and Exhibition Center. The three day event will feature keynote sessions, concurrent discussion forums, exhibits (e.g., telemedicine, information technology, mHealth, a venture summit, meet-and-greet sessions for international and domestic companies for potential business collaboration, and policy discussions on China healthcare. For registration information: http://www.atacn.org/en/

  20. TrayGen: Arranging objects for exhibition and packaging

    KAUST Repository

    Yang, Yongliang

    2013-10-01

    We present a framework, called TrayGen, to generate tray designs for the exhibition and packaging of a collection of objects. Based on principles from shape perception and visual merchandising, we abstract a number of design guidelines on how to organize the objects on the tray for the exhibition of their individual features and mutual relationships. Our framework realizes these guidelines by analyzing geometric shapes of the objects and optimizing their arrangement. We demonstrate that the resultant tray designs not only save space, but also highlight the characteristic of each object and the inter-relations between objects. © 2013 The Eurographics Association and John Wiley & Sons Ltd.

  1. Exhibition of Monogamy Relations between Entropic Non-contextuality Inequalities

    Science.gov (United States)

    Zhu, Feng; Zhang, Wei; Huang, Yi-Dong

    2017-06-01

    We exhibit the monogamy relation between two entropic non-contextuality inequalities in the scenario where compatible projectors are orthogonal. We show the monogamy relation can be exhibited by decomposing the orthogonality graph into perfect induced subgraphs. Then we find two entropic non-contextuality inequalities are monogamous while the KCBS-type non-contextuality inequalities are not if the orthogonality graphs of the observable sets are two odd cycles with two shared vertices. Supported by 973 Programs of China under Grant Nos. 2011CBA00303 and 2013CB328700, Basic Research Foundation of Tsinghua National Laboratory for Information Science and Technology (TNList)

  2. Artists’ publications: expanded editions and the challenges of exhibiting them

    Directory of Open Access Journals (Sweden)

    Gloria Picazo

    2017-06-01

    Full Text Available In this text, Gloria Picazo reflects on the diffusion and presentation of artists’ books in museums and art centers. The starting point is her experience in this matter, resulting from her term as director of the Centre d’Art la Panera de Lleida. This paper analyzes exhibitions and editorial projects that focus on artists’ publications and their production, exhibition and dissemination, such as those by Francesc Ruiz, Ana García Pineda, Fito Conesa or the Panera on Line project. There, different curators present, in video format, a selection of publications that belong to the funds of the Documentation Center of La Panera.

  3. One exhibition, many goals. Combining scientific research and risk communication

    Science.gov (United States)

    Charrière, Marie; Bogaard, Thom; Junier, Sandra; Malet, Jean-Philippe; Mostert, Erik

    2015-04-01

    How effective is visual communication to increase awareness of natural hazards and risks? To answer this research question, we developed a research design that was at the same time an experimental setting and an actual communication effort. Throughout the full length of the 2-years project held in the Ubaye valley (southeastern France), we collaborated with local and regional stakeholders (politicians and technicians). During a consultation phase, the communication context was determined, the audience of the project was defined and finally the testing activity-communication effort was determined. We were offered the opportunity to design an exhibition for the local public library. In a consultation phase that corresponded to the design of the exhibition, the stakeholders contributed to its content as well as helping with the funding of the exhibition. Finally, during the experimentation phase, the stakeholders participated in advertising the activity, gathering of participants and designing the scientific survey. In order to assess the effects of the exhibition on risk awareness, several groups of children, teenagers and adults were submitted to a research design, consisting of 1) a pre-test, 2) the visit of the exhibition and 3) a post-test similar to the pre-test. In addition, the children answered a second post-test 3 months after the visit. Close ended questions addressed the awareness indicators mentioned in the literature, i.e. worry level, previous experiences with natural hazards events, exposure to awareness raising, ability to mitigate/respond/prepare, attitude to risk, and demographics. In addition, the post-test included several satisfaction questions concerning the visual tools displayed in the exhibition. A statistical analysis of the changes between the pre- and post- tests (paired t-test, Wilcoxon signed-rank test and bootstrapping) allowed to verify whether the exhibition had an impact on risk awareness or not. In order to deduce which variable

  4. On the Politics of Exhibiting North Korean Art

    NARCIS (Netherlands)

    Shim, David

    2011-01-01

    This essay was written in reaction to the international symposium "Exploring North Korean Arts," which was held on the occasion of the art exhibition "Flowers for Kim Il Sung—Art and Architecture from the DPR Korea," in Vienna on September 3 and 4, 2010. The essay argues that scholars must recognize

  5. (Un)Disturbing Exhibitions: Indigenous Historical Memory at the NMAI

    Science.gov (United States)

    Carpio, Myla Vicenti

    2006-01-01

    Museums in particular are educational tools used to create and perpetuate specific ideologies and historical memories. They have played a prominent role in defining the visibility of Indigenous peoples and cultures in America historical memory by creating exhibits of Indigenous peoples based on perceptions and views that benefit and justify…

  6. 7 CFR Appendix - Exhibits to Subpart E of Part 1951

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 14 2010-01-01 2009-01-01 true Exhibits to Subpart E of Part 1951 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, RURAL BUSINESS-COOPERATIVE SERVICE, RURAL UTILITIES SERVICE, AND FARM SERVICE AGENCY, DEPARTMENT OF AGRICULTURE (CONTINUED) PROGRAM REGULATIONS (CONTINUED) SERVICING AND...

  7. Designing museum exhibits that facilitate visitor reflection and discussion

    DEFF Research Database (Denmark)

    Skydsgaard, Morten Arnika; Andersen, Hanne Møller; King, Heather

    2016-01-01

    This paper explores how four design principles (curiosity, challenge, narratives and participation) facilitate reflection and discussion among young visitors in the issues-based exhibition Dear, Difficult Body. The investigation is based on a mixed-method approach combining questionnaire and inte......This paper explores how four design principles (curiosity, challenge, narratives and participation) facilitate reflection and discussion among young visitors in the issues-based exhibition Dear, Difficult Body. The investigation is based on a mixed-method approach combining questionnaire...... and interview data. The implementation of design principles resulted in a variety of exhibits which variously prompted reflection and discussion on the part of visitors. Exhibits with narratives, for example, here defined as both personal and expert narratives, were found to be effective in facilitating...... pupils’ attention but also worked well with other design principles to engage the pupils in sustained reflection and discussion. While other contextual factors remain significant in determining visitor responses, this paper argues that the use of design principles can help create visitor experiences...

  8. Exhibition: Fibre optics, the future is at hand

    CERN Multimedia

    Anaïs Schaeffer

    2012-01-01

    Until 20 June, the Pont de la Machine in Geneva will host an exhibition on fibre optics, sponsored by SIG. CERN, a major user of this technology, was invited to take part with a presentation of some of its scintillating fibre detectors.   The CERN module, designed for the SIG's fibre optics exhibition. Visitors can discover a cosmic ray detector (on the right) and its oscilloscope (on the left), as well as one of the ALFA detector modules (at the back). The Services industriels genevois (SIG), who are in the process of deploying an optical fibre network in Geneva, have decided to showcase this technology with an exhibition entitled “Fibre optique – Le futur à portée de main.” The exhibition, which will be open to the public from 26 April to 20 June, is being held at the Espace ExpoSIG, at the Pont de la Machine in the centre of Geneva. “CERN’s Physics Department was approached by SIG at the start of this year to ...

  9. The "Gravity-Powered Calculator," a Galilean Exhibit

    Science.gov (United States)

    Cerreta, Pietro

    2014-01-01

    The Gravity-Powered Calculator is an exhibit of the Exploratorium in San Francisco. It is presented by its American creators as an amazing device that extracts the square roots of numbers, using only the force of gravity. But if you analyze his concept construction one can not help but recall the research of Galileo on falling bodies, the inclined…

  10. A new theory of doped manganites exhibiting colossal ...

    Indian Academy of Sciences (India)

    xAxMnO3, exhibit colossal magnetoresistance, metal insulator transitions, competing magnetic, or- bital and charge ordering, and many other interesting but poorly understood phenomena. In this article I outline our recent theory based on the idea ...

  11. 7 CFR Exhibit B to Subpart B of... - Servicing Company

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 12 2010-01-01 2010-01-01 false Servicing Company B Exhibit B to Subpart B of Part 1806 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, RURAL... of Part 1806—Servicing Company The servicing company office to be contacted for information relative...

  12. Do Online Learning Patterns Exhibit Regional and Demographic Differences?

    Science.gov (United States)

    Hsieh, Tsui-Chuan; Yang, Chyan

    2012-01-01

    This paper used a multi-level latent class model to evaluate whether online learning patterns exhibit regional differences and demographics. This study discovered that the Internet learning pattern consists of five segments, and the region of Taiwan is divided into two segments and further found that both the user and the regional segments are…

  13. Anti-synchronization of the rigid body exhibiting chaotic dynamics ...

    African Journals Online (AJOL)

    Anti-synchronization of the rigid body exhibiting chaotic dynamics. ... Journal of the Nigerian Association of Mathematical Physics ... Global asymptotic stability and convergence of the sum of the dynamical variables representing the Eulerian state space of the two rigid bodies was verified by numerical simulations. JONAMP ...

  14. Highlights of the inauguration ceremony for the new permanent exhibition

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    The new “Universe of Particles" permanent exhibition in the Globe was unveiled this week to its first visitors. On Monday, 28 June, in the presence of representatives of the local authorities, CERN Director-General Rolf Heuer cut the ribbon; on Tuesday, 29 and Wednesday 30 June the Globe's doors remained open for visits by the CERN personnel.   Cutting the ribbon at the inauguration of the Globe's new permanent exhibition At the conclusion of the inauguration ceremony, the Head of the Education Group, Rolf Landua, expressed his satisfaction: “It's wonderful. We are very happy that it has all turned out so well. Now we look forward to lots of visitors.” The exhibition represents a major addition to the tourist destinations in the region and an important tool for the public awareness of science, which could also be useful for schools. “The purpose of the exhibition is to inspire visitors, to arouse their curiosity about science and to motivate them t...

  15. Exploring Matter: An Interactive, Inexpensive Chemistry Exhibit for Museums

    Science.gov (United States)

    Murov, Steven; Chavez, Arnold

    2017-01-01

    Despite its vital importance in our lives, chemistry is inadequately represented in most museums. Issues such as safety, replenishing and disposal of chemicals, supervision required, and cost are constraints that have limited the number and size of chemistry exhibits. Taking into account the constraints, a 21-station interactive and inexpensive…

  16. Personalising content presentation in museum exhibitions: a case study

    NARCIS (Netherlands)

    Tan, E.S.; Oinonen, K.; Sablatnig, R.; Kampel, M.; Lettner, M.

    2009-01-01

    Museums need to attract more visitors. Personalization of exhibitions is one way to achieve this end. Various options for personalization using information systems have been proposed. A major question is how directive personalization should be. Is visitor satisfaction highest if the system limits

  17. Multifunctional materials exhibiting spin crossover and liquid-crystalline properties

    Energy Technology Data Exchange (ETDEWEB)

    Seredyuk, M. [Johannes-Gutenberg-Universitaet, Institut fuer Anorganische und Analystiche Chemie (Germany); Gaspar, Ana B. [Universitat de Valencia, Edifici de Instituts de Paterna, Institut de Ciencia Molecular/Departament de Quimica Inorganica (Spain); Ksenofontov, V., E-mail: v.ksenofontov@uni-mainz.de; Reiman, S. [Johannes-Gutenberg-Universitaet, Institut fuer Anorganische und Analystiche Chemie (Germany); Galyametdinov, Y. [Russian Academy of Science, Kazan Physical technical Institute (Russian Federation); Haase, W. [Darmstad University of Technology, Institute of Physical Chemistry (Germany); Rentschler, E.; Guetlich, P. [Johannes-Gutenberg-Universitaet, Institut fuer Anorganische und Analystiche Chemie (Germany)

    2005-11-15

    The physical characterization of a new class of Fe(II) multifunctional SCO materials exhibiting spin crossover and liquid crystalline properties in the room temperatures region is reported. Moessbauer spectroscopy, magnetic, differential scanning calorimetry (DSC), X-ray powder diffraction (XRD) and optical polarizing microscopy studies have been performed on such materials.

  18. A simple coordination complex exhibiting colour change on slight ...

    Indian Academy of Sciences (India)

    Administrator

    gens (from two OPDA ligands) that define equato- rial positions and the axial positions are filled by the nitrogen atoms coming from two different thiocy- anate ligands (figure 1). The thiocyanate ligands generally exhibit different binding modes in its metal complexes like S-bonded, N-bonded, bridging or ionic, etc. 19.

  19. Columnar phases exhibited by some polycatenar ligands and a few ...

    Indian Academy of Sciences (India)

    Home; Journals; Pramana – Journal of Physics; Volume 61; Issue 2. Columnar phases exhibited by some polycatenar ligands and a few related metal complexes. B K Sadashiva V A Raghunathan. Volume 61 Issue 2 August 2003 pp 219-229 ... Keywords. Columnar phase; cubic phase; polycatenar; metal complex.

  20. 75 FR 3862 - Photography in Public Exhibit Space

    Science.gov (United States)

    2010-01-25

    ... RECORDS ADMINISTRATION 36 CFR Part 1280 RIN 3095-AB60 Photography in Public Exhibit Space AGENCY: National... documents accessible and available to the public, and that by prohibiting photography, NARA will make its... from visitors requesting and demanding that NARA eliminate all photography. Comments such as these...

  1. A new theory of doped manganites exhibiting colossal ...

    Indian Academy of Sciences (India)

    Rare earth manganites doped with alkaline earths, namely Re1-AMnO3, exhibit colossal magnetoresistance, metal insulator transitions, competing magnetic, orbital and charge ordering, and many other interesting but poorly understood phenomena. In this article I outline our recent theory based on the idea that in the ...

  2. Does the classically chaotic Henon–Heiles oscillator exhibit ...

    Indian Academy of Sciences (India)

    HHO can exhibit quantum chaos under a time-dependent Hamiltonian does not seem to have been addressed so far. In this paper, we pursue this question by taking the TD potential as arising from an intense laser field acting on an electron moving as an HHO, without employing an external wave packet. The reasons for.

  3. 77 FR 31909 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2012-05-30

    ... of March 27, 1978, the Foreign Affairs Reform and Restructuring Act of 1998 (112 Stat. 2681, et seq... agreement with the foreign owners or custodians. I also determine that the exhibition or display of the... of Educational and Cultural Affairs, Department of State. BILLING CODE 4710-05-P ...

  4. 76 FR 61472 - Culturally Significant Objects Imported for Exhibition

    Science.gov (United States)

    2011-10-04

    ...), Executive Order 12047 of March 27, 1978, the Foreign Affairs Reform and Restructuring Act of 1998 (112 Stat... agreement with the foreign owner or custodian. I also determine that the exhibition or display of the... Deputy Assistant Secretary, Bureau of Educational and Cultural Affairs, Department of State. BILLING CODE...

  5. Peasants on display: the Czechoslavic Ethnographic Exhibition of 1895.

    Science.gov (United States)

    Filipová, Marta

    2011-01-01

    In the increasingly modernized Central Europe of the late nineteenth century, folk culture, with its alleged ancient character, was still understood by some scholars as the bearer of national identity. The Czechoslavic [sic] Ethnographic Exhibition, which took place in Prague in 1895, aimed to promote the idea of the ethnically unified, but at the same time regionally diverse, identity of the Czech-speaking people living in Bohemia, Moravia and Slovakia. Having to negotiate their identity with the ethnic Germans of Bohemia, the Czechs consciously excluded them from the event both as organizers and as exhibitors. The exhibition could therefore be seen as a symptom of its time—in the late nineteenth century Central Europe, locating national heritage was crucial and folk culture played an important role in the national politics, and not only for the Czechs. This article focuses mainly on the ethnographic exhibit entitled ‘the Exhibition Village’, which consisted of an eclectic selection of village houses and their imitations from Bohemia, Moravia and Slovakia. On this basis, it explores the political intentions behind the display of folk culture to both urban and rural audiences and brings attention to the question of integration of the diverse regional objects in a utopian national whole. The article thus also aims to demonstrate issues related to the use of folk artefacts for the purposes of cultural nationalism in Austria-Hungary in the late nineteenth century.

  6. Alien Earths: A Traveling Science Exhibit and Education Program

    Science.gov (United States)

    Dusenbery, P. B.; Morrow, C. A.; Harold, J.

    2004-05-01

    Where did we come from? Are we alone? These age-old questions form the basis of NASA's Origins Program, a series of missions spanning the next twenty years that will use a host of space- and ground-based observatories to understand the origin and development of galaxies, stars, planets, and the conditions necessary to support life. The Space Science Institute in Boulder, CO, is developing a 3,000 square-foot traveling exhibition, called Alien Earths, which will bring origins-related research and discoveries to students and the American public. Alien Earths will have four interrelated exhibit areas: Our Place in Space, Star Birth, PlanetQuest, and Search for Life. Exhibit visitors will explore the awesome events surrounding the birth of stars and planets; they will join scientists in the hunt for planets outside our solar system including those that may be in "habitable zones" around other stars; and finally they will be able to learn about the wide range of conditions for life on Earth and how scientists are looking for signs of life beyond Earth. Visitors will also learn about the tools scientists use, such as space-based and ground-based telescopes, to improve our understanding of the cosmos. The exhibit's size will permit it to visit medium sized museums in all regions of the country. It will begin its 3-year tour to 9 host museums and science centers in early 2005 at the Lawrence Hall of Science in Berkeley, California. The Association of Science-Technology Centers (ASTC) will manage the exhibit's national tour. In addition to the exhibit, the project includes workshops for educators and docents at host sites, as well as a public website that will use exhibit content to delve deeper into origins research. Current partners in the Alien Earths project include ASTC, Denver Museum of Nature and Science, Lawrence Hall of Science, NASA Astrobiology Institute, NASA missions (Navigator, SIRTF, and Kepler), the SETI Institute, and the Space Telescope Science Institute

  7. Assessing the User Resistance to Recommender Systems in Exhibition

    Directory of Open Access Journals (Sweden)

    Chulmo Koo

    2017-11-01

    Full Text Available Under the paradigm shift toward smart tourism, the exhibition industry is making efforts to introduce innovative technologies that can provide more diverse and valuable experiences to attendees. However, various new information technologies have failed in a market in practice due to the user’s resistance against it. Since innovative technology, such as booth recommender systems (BRS, is changing, creating uncertainty among consumers, consumer’s resistance to innovative technology can be considered a normal reaction. Therefore, it is important for a company to understand the psychological aspect of the consumer’s resistance and make measures to overcome the resistance. Accordingly, based on the model of Kim and Kankanhalli (2009, by applying the perceived value, the technology acceptance model, and the status quo bias theory, this study focused on the importance of self-efficacy and technical support in the context of using BRS. To do this purpose, a total of 455 survey data that was collected from “Korea franchise exhibition” attendees were used to analyze the proposed model. Structural equation modeling was applied for data analysis. The result shows that perceived value was affected by relative advantage and switching cost, also switching cost reduced the perceived value. However, self-efficacy reduced the switching cost, thereby decreasing the resistance of exhibition attendees. In addition, technical support increased the relative advantage switching cost and the perceived value. Exhibition attendee’s resistance was significantly negatively affected by perceived value, and positively affected by switching cost. The results will provide balanced viewpoints between the relative advantage and switching cost for exhibition marketers, helping to strengthen the competitiveness in terms of sustainable tourism of exhibition.

  8. Poster exhibitions at conferences: are we doing it properly?

    Science.gov (United States)

    Beamish, Andrew J; Ansell, James; Foster, Jessica J; Foster, Kathryn A; Egan, Richard J

    2015-01-01

    Literature exploring the educational value and quality of conference poster presentation is scarce. The aim of this study was to identify and describe the variation in poster exhibitions across a spectrum of conferences attended by trainees. Prospective observational assessment of conference posters was carried out across 7 variables at 4 conferences attended by surgical trainees in 2012. Posters were compared by individual variables and according to overall poster score combining all 7 variables examined. The number of authors listed was also compared. Random samples of consecutively numbered posters were examined at the exhibitions of 4 conferences, which included a UK national medical education conference (Association for the Study of Medical Education), a UK international surgical conference (Association of Surgeons of Great Britain and Ireland), a European oncology conference (European Society of Surgical Oncology), and a North American joint medical and surgical conference (Digestive Diseases Week). Significant variation existed between conferences in posters and their presentation. The proportion of presenters failing to display their posters ranged from 3% to 26% (p posters that were formatted using aims, methods, results, and conclusion sections (81%-93%; p = 0.513) or in the proportion of posters that were identified as difficult to read (24%-28%; p = 0.919). Association for the Study of Medical Education outperformed each of the other exhibitions overall (p Posters with greater than the median of 4 authors performed significantly better across all areas (p Poster exhibitions varied widely, with room for improvement at all 4 conferences. Lessons can be learned by all conferences from each other to improve presenter engagement with and the educational value of poster exhibitions. Copyright © 2014 Association of Program Directors in Surgery. Published by Elsevier Inc. All rights reserved.

  9. Children and older adults exhibit distinct sub-optimal cost-benefit functions when preparing to move their eyes and hands.

    Directory of Open Access Journals (Sweden)

    Claudia C Gonzalez

    Full Text Available Numerous activities require an individual to respond quickly to the correct stimulus. The provision of advance information allows response priming but heightened responses can cause errors (responding too early or reacting to the wrong stimulus. Thus, a balance is required between the online cognitive mechanisms (inhibitory and anticipatory used to prepare and execute a motor response at the appropriate time. We investigated the use of advance information in 71 participants across four different age groups: (i children, (ii young adults, (iii middle-aged adults, and (iv older adults. We implemented 'cued' and 'non-cued' conditions to assess age-related changes in saccadic and touch responses to targets in three movement conditions: (a Eyes only; (b Hands only; (c Eyes and Hand. Children made less saccade errors compared to young adults, but they also exhibited longer response times in cued versus non-cued conditions. In contrast, older adults showed faster responses in cued conditions but exhibited more errors. The results indicate that young adults (18-25 years achieve an optimal balance between anticipation and execution. In contrast, children show benefits (few errors and costs (slow responses of good inhibition when preparing a motor response based on advance information; whilst older adults show the benefits and costs associated with a prospective response strategy (i.e., good anticipation.

  10. Protease-sensitive synthetic prions.

    Directory of Open Access Journals (Sweden)

    David W Colby

    2010-01-01

    Full Text Available Prions arise when the cellular prion protein (PrP(C undergoes a self-propagating conformational change; the resulting infectious conformer is designated PrP(Sc. Frequently, PrP(Sc is protease-resistant but protease-sensitive (s prions have been isolated in humans and other animals. We report here that protease-sensitive, synthetic prions were generated in vitro during polymerization of recombinant (rec PrP into amyloid fibers. In 22 independent experiments, recPrP amyloid preparations, but not recPrP monomers or oligomers, transmitted disease to transgenic mice (n = 164, denoted Tg9949 mice, that overexpress N-terminally truncated PrP. Tg9949 control mice (n = 174 did not spontaneously generate prions although they were prone to late-onset spontaneous neurological dysfunction. When synthetic prion isolates from infected Tg9949 mice were serially transmitted in the same line of mice, they exhibited sPrP(Sc and caused neurodegeneration. Interestingly, these protease-sensitive prions did not shorten the life span of Tg9949 mice despite causing extensive neurodegeneration. We inoculated three synthetic prion isolates into Tg4053 mice that overexpress full-length PrP; Tg4053 mice are not prone to developing spontaneous neurological dysfunction. The synthetic prion isolates caused disease in 600-750 days in Tg4053 mice, which exhibited sPrP(Sc. These novel synthetic prions demonstrate that conformational changes in wild-type PrP can produce mouse prions composed exclusively of sPrP(Sc.

  11. Another look at climate sensitivity

    Directory of Open Access Journals (Sweden)

    I. Zaliapin

    2010-03-01

    Full Text Available We revisit a recent claim that the Earth's climate system is characterized by sensitive dependence to parameters; in particular, that the system exhibits an asymmetric, large-amplitude response to normally distributed feedback forcing. Such a response would imply irreducible uncertainty in climate change predictions and thus have notable implications for climate science and climate-related policy making. We show that equilibrium climate sensitivity in all generality does not support such an intrinsic indeterminacy; the latter appears only in essentially linear systems. The main flaw in the analysis that led to this claim is inappropriate linearization of an intrinsically nonlinear model; there is no room for physical interpretations or policy conclusions based on this mathematical error. Sensitive dependence nonetheless does exist in the climate system, as well as in climate models – albeit in a very different sense from the one claimed in the linear work under scrutiny – and we illustrate it using a classical energy balance model (EBM with nonlinear feedbacks. EBMs exhibit two saddle-node bifurcations, more recently called "tipping points," which give rise to three distinct steady-state climates, two of which are stable. Such bistable behavior is, furthermore, supported by results from more realistic, nonequilibrium climate models. In a truly nonlinear setting, indeterminacy in the size of the response is observed only in the vicinity of tipping points. We show, in fact, that small disturbances cannot result in a large-amplitude response, unless the system is at or near such a point. We discuss briefly how the distance to the bifurcation may be related to the strength of Earth's ice-albedo feedback.

  12. Control of dynamic foot-ground interactions in male and female soccer athletes: females exhibit reduced dexterity and higher limb stiffness during landing.

    Science.gov (United States)

    Lyle, Mark A; Valero-Cuevas, Francisco J; Gregor, Robert J; Powers, Christopher M

    2014-01-22

    Controlling dynamic interactions between the lower limb and ground is important for skilled locomotion and may influence injury risk in athletes. It is well known that female athletes sustain anterior cruciate ligament (ACL) tears at higher rates than male athletes, and exhibit lower extremity biomechanics thought to increase injury risk during sport maneuvers. The purpose of this study was to examine whether lower extremity dexterity (LED)--the ability to dynamically control endpoint force magnitude and direction as quantified by compressing an unstable spring with the lower limb at submaximal forces--is a potential contributing factor to the "at-risk" movement behavior exhibited by female athletes. We tested this hypothesis by comparing LED-test performance and single-limb drop jump biomechanics between 14 female and 14 male high school soccer players. We found that female athletes exhibited reduced LED-test performance (p=0.001) and higher limb stiffness during landing (p=0.008) calculated on average within 51 ms of foot contact. Females also exhibited higher coactivation at the ankle (p=0.001) and knee (p=0.02) before landing. No sex differences in sagittal plane joint angles and center of mass velocity at foot contact were observed. Collectively, our results raise the possibility that the higher leg stiffness observed in females during landing is an anticipatory behavior due in part to reduced lower extremity dexterity. The reduced lower extremity dexterity and compensatory stiffening strategy may contribute to the heightened risk of ACL injury in this population. © 2013 Published by Elsevier Ltd.

  13. Human Brainstem Exhibits higher Sensitivity and Specificity than Auditory-Related Cortex to Short-Term Phonetic Discrimination Learning

    National Research Council Canada - National Science Library

    Stefan Elmer; Marcela Hausheer; Joëlle Albrecht; Jürg Kühnis

    2017-01-01

    .... Here, we evaluated whether these two computational entities are prone to short-term functional changes, whether there is a chronological difference in malleability, and whether short-term training...

  14. HIV-1 subtype C primary isolates exhibit high sensitivity to an anti-gp120 RNA aptamer

    CSIR Research Space (South Africa)

    Mufhandu, Hazel T

    2012-09-01

    Full Text Available Globally, HIV-1 subtype C is the most prevalent subtype, yet most antiretroviral drugs are developed against subtype B. UCLA1 RNA aptamer, which we previously showed neutralizes HIV-1 subtype C Env-pseudotyped viruses was examined for neutralization...

  15. Tropical Malaysians and temperate Koreans exhibit significant differences in sweating sensitivity in response to iontophoretically administered acetylcholine

    Science.gov (United States)

    Lee, Jeong-Beom; Bae, Jun-Sang; Matsumoto, Takaaki; Yang, Hun-Mo; Min, Young-Ki

    2009-03-01

    Natives of the tropics are able to tolerate high ambient temperatures. This results from their long-term residence in hot and often humid tropical climates. This study was designed to compare the peripheral mechanisms of thermal sweating in tropical natives with that of their temperate counterparts. Fifty-five healthy male subjects including 20 native Koreans who live in the temperate Korean climate (Temperate-N) and 35 native tropical Malaysian men that have lived all of their lives in Malaysia (Tropical-N) were enrolled in this study after providing written informed consent to participate. Quantitative sudomotor axon reflex testing after iontophoresis (2 mA for 5 min) with 10% acetylcholine (ACh) was used to determine directly activated (DIR) and axon reflex-mediated (AXR) sweating during ACh iontophoresis. The sweat rate, activated sweat gland density, sweat gland output per single gland activated, and oral and skin temperature changes were measured. The sweat onset time of AXR (nicotinic-receptor-mediated) was 56 s shorter in the Temperate-N than in the Tropical-N subjects ( P stress.

  16. Growth trends and sensitivity to climate of declining Mediterranean open woodlands exhibiting widespread mortality in Southern Spain

    OpenAIRE

    Natalini, Fabio; Alejano Monge, Reyes; Vázquez Piqué, Javier; Cañellas, Isabel

    2013-01-01

    We present two chronologies of dead and weakened Quercus ilex trees from declining open woodlands of Southern Andalusia and discuss climate's implication in the current widespread mortality in these ecosystems. Basal area increments were used to find out periods of growth decline preceding death. Absent rings became frequent since the 1970s, coinciding with increasing drought. Negative pointer years matched dry years and became more pronounced in the last decades. Growth was correlated with t...

  17. Human peripheral blood mononuclear cells exhibit heterogeneous CD52 expression levels and show differential sensitivity to alemtuzumab mediated cytolysis.

    Directory of Open Access Journals (Sweden)

    Sambasiva P Rao

    Full Text Available Alemtuzumab is a monoclonal antibody that targets cell surface CD52 and is effective in depleting lymphocytes by cytolytic effects in vivo. Although the cytolytic effects of alemtuzumab are dependent on the density of CD52 antigen on cells, there is scant information regarding the expression levels of CD52 on different cell types. In this study, CD52 expression was assessed on phenotypically distinct subsets of lymphoid and myeloid cells in peripheral blood mononuclear cells (PBMCs from normal donors. Results demonstrate that subsets of PBMCs express differing levels of CD52. Quantitative analysis showed that memory B cells and myeloid dendritic cells (mDCs display the highest number while natural killer (NK cells, plasmacytoid dendritic cells (pDCs and basophils have the lowest number of CD52 molecules per cell amongst lymphoid and myeloid cell populations respectively. Results of complement dependent cytolysis (CDC studies indicated that alemtuzumab mediated profound cytolytic effects on B and T cells with minimal effect on NK cells, basophils and pDCs, correlating with the density of CD52 on these cells. Interestingly, despite high CD52 levels, mDCs and monocytes were less susceptible to alemtuzumab-mediated CDC indicating that antigen density alone does not define susceptibility. Additional studies indicated that higher expression levels of complement inhibitory proteins (CIPs on these cells partially contributes to their resistance to alemtuzumab mediated CDC. These results indicate that alemtuzumab is most effective in depleting cells of the adaptive immune system while leaving innate immune cells relatively intact.

  18. Identification of Yeast Mutants Exhibiting Altered Sensitivity to Valinomycin and Nigericin Demonstrate Pleiotropic Effects of Ionophores on Cellular Processes.

    Science.gov (United States)

    Jakubkova, Michaela; Dzugasova, Vladimira; Truban, Dominika; Abelovska, Lenka; Bhatia-Kissova, Ingrid; Valachovic, Martin; Klobucnikova, Vlasta; Zeiselova, Lucia; Griac, Peter; Nosek, Jozef; Tomaska, Lubomir

    2016-01-01

    Ionophores such as valinomycin and nigericin are potent tools for studying the impact of ion perturbance on cellular functions. To obtain a broader picture about molecular components involved in mediating the effects of these drugs on yeast cells under respiratory growth conditions, we performed a screening of the haploid deletion mutant library covering the Saccharomyces cerevisiae nonessential genes. We identified nearly 130 genes whose absence leads either to resistance or to hypersensitivity to valinomycin and/or nigericin. The processes affected by their protein products range from mitochondrial functions through ribosome biogenesis and telomere maintenance to vacuolar biogenesis and stress response. Comparison of the results with independent screenings performed by our and other laboratories demonstrates that although mitochondria might represent the main target for both ionophores, cellular response to the drugs is very complex and involves an intricate network of proteins connecting mitochondria, vacuoles, and other membrane compartments.

  19. Insulin sensitivity and albuminuria

    DEFF Research Database (Denmark)

    Pilz, Stefan; Rutters, Femke; Nijpels, Giel

    2014-01-01

    OBJECTIVE: Accumulating evidence suggests an association between insulin sensitivity and albuminuria, which, even in the normal range, is a risk factor for cardiovascular diseases. We evaluated whether insulin sensitivity is associated with albuminuria in healthy subjects. RESEARCH DESIGN...... albuminuria. This finding suggests that reduced insulin sensitivity either is simply related to or might causally contribute to the initial pathogenesis of albuminuria....

  20. Literature and Social Sensitivity.

    Science.gov (United States)

    Loban, Walter

    Focusing on the responses of adolescents to literature "involving values based on the concept of human dignity," this study examined two groups of adolescents (60 students each) in grades 8-12. The two groups represented extremes of social sensitivity: highly sensitive and least sensitive to the feelings of others. Teachers read aloud 10 short…

  1. Local sensitivity in econometrics

    NARCIS (Netherlands)

    Vasnev, A.L.

    2006-01-01

    The study of the effect of the violations of the model assumptions on the parameter of interest is called sensitivity analysis. Chapter 2 of this thesis defines the sensitivity statistic and confronts sensitivity analysis with diagnostic testing in a general maximum likelihood framework. Under

  2. On the relationship between emotional state and abnormal unfairness sensitivity in alcohol dependence

    Directory of Open Access Journals (Sweden)

    Damien eBrevers

    2015-07-01

    Full Text Available Recent empirical findings suggest that alcohol dependence is characterized by heightened sensitivity to unfairness during social transactions. The present study went a step further and aimed to ascertain whether this abnormal level of sensitivity to unfairness is underlined by an increased emotional reactivity. Twenty-six recently abstinent alcohol-dependent individuals (AD and 32 controls performed an Ultimatum Game (UG, in which participants had to respond to take-it-or-leave-it offers, ranging from fair to unfair and made by a fictive proposer. Emotional state was recorded during UG offers presentation and was indexed by the amplitude of skin conductance response (SCR. Results showed that AD decided to reject unfair offers more frequently than their controls, confirming previous data. The proportion of rejected unfair UG offers was correlated with SCR, in the AD but not in the control group. This finding suggests that deciding to accept or reject unfair UG offers is influenced by arousal-affective activity in AD, but not in controls. Heightened emotional reactivity may have driven AD to punish the proposer rather than acting as a rational economic agent. An implication of present findings is that AD might have difficult to cope with unfair situations triggered by social interactions. Future studies are needed are needed in order to examine whether - emotional and behavioral - reactivity to unfairness during the UG could impact alcohol consumption and relapse in AD.

  3. Exhibition “Space. Information. Research.”

    Directory of Open Access Journals (Sweden)

    Darko Šiško

    2015-06-01

    Full Text Available The exhibition Space. Information. Research. was opened in ZgForum, premises of the City Office of Strategic Planning and Development of the City of Zagreb for communication with professional and the general public on December 18, 2014. The exhibition was opened by deputy mayor of the City of Zagreb, Mrs. Sandra Švaljek Ph.D. and guests were also addressed by Jadranka Veselić Bruvo, Head of the City Office of Strategic Planning and Development and Boris Koružnjak, Dean of the Faculty of Architecture, University of Zagreb. The event was attended by about a hundred invited guests from city administration, City Assembly, academic community, NGOs, private sector, etc.

  4. The Role of the Freelance Curator in an Art Exhibition

    Directory of Open Access Journals (Sweden)

    Ieva VITKAUSKAITĖ

    2015-12-01

    Full Text Available This article analyses the role of the freelance curator in an art exhibition. The first part of the article conceptualises the notion of the modern curator and surveys the categories of curators. The next part of the article surveys the potential models of curation. There are 7 models of curation distinguished: self- reflexive, “sampling”, traditional, decentralisation curation, virtual curation, art – curator, collaborative – curatorial platform. The third part analyses the activity of a freelance curator in the art exhibition, which is divided into five stages, namely preliminary work, preparation and completion of the organisation plan, realisation, operation, dismantling and evaluation. Each stage is described in great detail specifying what works should be carried out by the curator. The final part of the article analyses the remarks of the curators which are then used to derive the formula of successful curatorship.

  5. Design of contemporary art exhibitions - a struggle or an embracement?

    DEFF Research Database (Denmark)

    Schwarzbart, Judith

    the individual works together (in liniear or non-liniear structures). Finally, the insitutuion has its guidelines (corporate identity), museum pedagogs have their method and ideas, etc. This paper will address the use of exhibition design in relation to contemporary art and will discuss a number of examples......In established museums and art centres the design tasks related to exhibition galleries are often limited to graphic design in wall texts and lables, on the one side, and temporary support structures such as white walls, plinths, and black boxes for video projections, on the other....... And that is for good reasons. There are already many agendas involved in this process: Artists and artworks claiming (at least some) authonomy not only in the visual realm but also the organisation of space (ex. in installation art). Curators installing the works are seeking not only to give bests conditions to each...

  6. Characterization of Catalase from Psychrotolerant Psychrobacter piscatorii T-3 Exhibiting High Catalase Activity

    Science.gov (United States)

    Kimoto, Hideyuki; Yoshimune, Kazuaki; Matsuyma, Hidetoshi; Yumoto, Isao

    2012-01-01

    A psychrotolerant bacterium, strain T-3 (identified as Psychrobacter piscatorii), that exhibited an extraordinarily high catalase activity was isolated from the drain pool of a plant that uses H2O2 as a bleaching agent. Its cell extract exhibited a catalase activity (19,700 U·mg protein−1) that was higher than that of Micrococcus luteus used for industrial catalase production. Catalase was approximately 10% of the total proteins in the cell extract of the strain. The catalase (PktA) was purified homogeneously by only two purification steps, anion exchange and hydrophobic chromatographies. The purified catalase exhibited higher catalytic efficiency and higher sensitivity of activity at high temperatures than M. luteus catalase. The deduced amino acid sequence showed the highest homology with catalase of Psycrobacter cryohalolentis, a psychrotolelant bacterium obtained from Siberian permafrost. These findings suggest that the characteristics of the PktA molecule reflected the taxonomic relationship of the isolate as well as the environmental conditions (low temperatures and high concentrations of H2O2) under which the bacterium survives. Strain T-3 efficiently produces a catalase (PktA) at a higher rate than Exiguobacterium oxidotolerans, which produces a very strong activity of catalase (EktA) at a moderate rate, in order to adapt to high concentration of H2O2. PMID:22408420

  7. Characterization of Catalase from Psychrotolerant Psychrobacter piscatorii T-3 Exhibiting High Catalase Activity

    Directory of Open Access Journals (Sweden)

    Hidetoshi Matsuyma

    2012-02-01

    Full Text Available A psychrotolerant bacterium, strain T-3 (identified as Psychrobacter piscatorii, that exhibited an extraordinarily high catalase activity was isolated from the drain pool of a plant that uses H2O2 as a bleaching agent. Its cell extract exhibited a catalase activity (19,700 U·mg protein−1 that was higher than that of Micrococcus luteus used for industrial catalase production. Catalase was approximately 10% of the total proteins in the cell extract of the strain. The catalase (PktA was purified homogeneously by only two purification steps, anion exchange and hydrophobic chromatographies. The purified catalase exhibited higher catalytic efficiency and higher sensitivity of activity at high temperatures than M. luteus catalase. The deduced amino acid sequence showed the highest homology with catalase of Psycrobacter cryohalolentis, a psychrotolelant bacterium obtained from Siberian permafrost. These findings suggest that the characteristics of the PktA molecule reflected the taxonomic relationship of the isolate as well as the environmental conditions (low temperatures and high concentrations of H2O2 under which the bacterium survives. Strain T-3 efficiently produces a catalase (PktA at a higher rate than Exiguobacterium oxidotolerans, which produces a very strong activity of catalase (EktA at a moderate rate, in order to adapt to high concentration of H2O2.

  8. Case study of virtual reality in CNC machine tool exhibition

    OpenAIRE

    Kao Yung-Chou; Lee Chung-Shuo; Liu Zhi-Ren; Lin Yu-Fu

    2017-01-01

    Exhibition and demonstration are generally used in the promotion and sale-assistance of manufactured products. However, the transportation cost of the real goods from the vender factory to the exposition venue is generally expensive for huge and heavy commodity. With the advancement of computing, graphics, mobile apps, and mobile hardware the 3D visibility technology is getting more and more popular to be adopted in visual-assisted communication such as amusement games. Virtual reality (VR) t...

  9. [Aspects of animal welfare relevant to poultry exhibitions].

    Science.gov (United States)

    Mantel, T

    1995-03-01

    After a summary of the organized poultry racebreeding and the ways of exhibitions in the FRG, we point out the most frequent collisions with the law for animal protection nowadays: The forbidden clipping of parts about the head at certain game fowl e.g. Modern and Old English Game and the bantams of these races, dealings to avoid flying and the acute strain through transports. Because of his competence the civil servant vet is asked for to stop grievances primarily by advice.

  10. Preserving and Exhibiting Media Art. Challenges and Perspectives

    OpenAIRE

    Despodt, Veronique

    2014-01-01

    This important and first-of-its-kind collection addresses the emerging challenges in the field of media art preservation and exhibition, providing an outline for the training of professionals in this field. Since the emergence of time-based media such as film, video and digital technology, artists have used them to experiment with their potential. The resulting artworks, with their basis in rapidly developing technologies that cross over into other domains such as broadcasting and social medi...

  11. Marcel Duchamp and the art of exhibition making

    Directory of Open Access Journals (Sweden)

    Marian Cousijn

    2016-06-01

    Full Text Available Marcel Duchamp made his first readymade over a century ago: a deceptively simple gesture that would turn the art world upside down. The core of artistic practise no longer lies in creating, but in selecting and displaying. But selecting and displaying are also the core tasks of the independent curator. Duchamp already proved in the 1930’s how powerful an exhibition maker can be. A power struggle arose: who gives meaning to art, the curator or the artist?

  12. On some liquid crystalline phases exhibited by compounds made of ...

    Indian Academy of Sciences (India)

    2015-11-27

    Nov 27, 2015 ... This system exhibits the biaxial smectic A phase down to 30°C. Using polarized infrared spectroscopy we find that the mutual orientation of the R and BC molecules in the SmAdb liquid crystal is such that the arrow axes of the BC molecules are along the layer normal of the partial bilayer smectic structure ...

  13. Inuit Perspectives on Arctic Environmental Change': A Traveling Exhibition

    Science.gov (United States)

    Sheffield, E. M.; Hakala, J. S.; Gearheard, S.

    2006-12-01

    The Inuit of Nunavut, Canada, have an intimate relationship with their surroundings. As a culture that relies on knowledge of sea ice, snow, and weather conditions for success in hunting, fishing, and healthy wellbeing, Inuit have observed and studied environmental patterns for generations. An ongoing study into their traditional knowledge and their observations of environmental change is being conducted by researcher Dr. Shari Gearheard, who has worked with Inuit communities in Nunavut for over a decade. The results of the research have been published in scientific journals, and to communicate the results to a broader audience, Dr. Gearheard designed an interactive CD-ROM displaying photographs, maps, and interview videos of Inuit Elders' perspectives on the changes they have witnessed. Receiving immediate popularity since its release in 2004, copies of `When the Weather is Uggianaqtuq: Inuit Observations of Environmental Change' have been distributed worldwide, to indigenous peoples, social science and climate change researchers, teachers, students, and the general public. To further disseminate the information contained on the CD-ROM, the National Snow and Ice Data Center and the Museum of Natural History, both of the University of Colorado, are partnering to create an exhibition which will open at the Museum during the International Polar Year in April 2008. The exhibit, tentatively titled `Inuit Perspectives on Arctic Environmental Change,' will feature photographs, graphics, and text in both English and Inuktitut describing environmental change in the North. The goals are to make the information and interpretation contained on the CD-ROM available and more accessible to a broad audience and to raise awareness about Arctic climate change and the important contribution of Inuit knowledge. Following exhibition at the Museum, the exhibit will travel throughout the United States, Alaska, and Nunavut, through a network of museums, schools, libraries, tribal

  14. Surface Conductive Graphene-Wrapped Micromotors Exhibiting Enhanced Motion.

    Science.gov (United States)

    Ma, Xing; Katuri, Jaideep; Zeng, Yongfei; Zhao, Yanli; Sanchez, Samuel

    2015-10-01

    Surface-conductive Janus spherical motors are fabricated by wrapping silica particles with reduced graphene oxide capped with a thin Pt layer. These motors exhibit a 100% enhanced velocity as compared to standard SiO2 -Pt motors. Furthermore, the versatility of graphene may open up possibilities for a diverse range of applications from active drug delivery systems to water remediation. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. art@CMS students' exhibition in Centre des Arts, ECOLINT

    CERN Multimedia

    CMS Communications Group; Geneva, Switzerland; Vaso Sideri

    2015-01-01

    This video documents the outcome of a science and art workshop with the participation of high-school students from the International School of Geneva (ECOLINT). The project was implemented in the framework of art@CMS, an education and outreach programme of the CMS experiment at CERN. In the video, the students present their artworks during the opening of their exhibition at the Centre des Arts of ECOLINT in Geneva.

  16. Caecilians exhibit cutaneous respiration and high evaporative water ...

    African Journals Online (AJOL)

    Caecilians exhibit cutaneous respiration and high evaporative water loss. W.K. Steele, G.N. Louw. Abstract. Scolecomorphus kirki het 'n gemiddelde rustende VO2 van 0,052 ± 0,009 ml O2 g-1 h by 20% rh en 20°C. Die gemiddelde RK was 1,06 en 54,5% van die totale CO2-produksie het deur die vel verlore gegaan.

  17. Liberty Bell 7 Space Capsule Exhibit previews at Visitor Complex

    Science.gov (United States)

    2000-01-01

    Media gather at the KSC Visitor Complex for the kickoff of the Discovery Channel's Liberty Bell 7 Space Capsule Exhibit, which will open to the public on Saturday, June 17. At the podium is Mike Quattrone, executive vice president and general manager, Discovery Channel. Standing to the left of the podium is Rick Abramson, president and chief operating officer of Delaware North Parks Services of Spaceport, Inc., and far left, Jim Jennings, deputy director of Kennedy Space Center. Liberty Bell 7 launched U.S. Air Force Captain Virgil '''Gus''' Grissom July 21, 1961 on a mission that lasted 15 minutes and 37 seconds before sinking to the floor of the Atlantic Ocean, three miles deep. It lay undetected for nearly four decades before a Discovery Channel expedition located it and recovered it. The space capsule is now restored and preserved, and part of an interactive exhibit touring science centers and museums in 12 cities throughout the United States until 2003. The exhibit includes hands-on elements such as a capsule simulator, a centrifuge, and ROV pilot.

  18. “Draw me a physicist” exhibition opens

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    From 12 to 23 June, the Globe of Science and Innovation will be hosting the “Draw me a physicist” exhibition: over 160 drawings and definitions that illustrate how children see the world of research.   In a child’s imagination, scientists are colourful, slightly eccentric figures with unusual powers. This is what emerges from the exhibition on the second floor of the Globe of Science and Innovation, opening on 12 June. “Draw me a physicist” brings together 160 drawings and definitions by children about the profession of research scientist. The exhibition is the result of a six-month project by CERN and 20 primary school classes from the Pays de Gex and the communes of Meyrin, Satigny and Vernier. Some 400 schoolchildren aged 9 to 11 were asked in class to make drawings and come up with definitions of a physicist. Subsequently they came to CERN, visited one of the Laboratory’s sites, and met and interviewed some physicists. They used t...

  19. HAPTIC DEVICES AND TACTILE EXPERIENCES IN MUSEUM EXHIBITIONS

    Directory of Open Access Journals (Sweden)

    Radu Comes

    2016-12-01

    Full Text Available Museums all around the globe are starting to adopt advanced technologies that enable the visitors to interact with digital replicas of their collections and artworks. Immersive and interactive virtual reality applications represent one of the most appealing and most used technologies within modern museum exhibitions areas. Using these types of applications the visitors can have access to additional layers of information which can be presented in different languages and presented to the visitor when they demand it using advanced digital interactivity. But the major drawback of these applications is that they don’t allow the users to experience tactile exploration regarding the shapes and ornaments of the cultural heritage artefacts. People are programmed to gather and receive sensory information using their sight, hearing but also using tactile experiences. In order to enable tactile experiences within museum exhibitions, modern technologies such as haptic devices can be installed to enable the visitors to examine the shape of the 3D digital replicas of real artefacts. This paper presents a case study of a haptic device instalment within a museum exhibition that can enable real time tactile exploration of digitized artefacts.

  20. Didactical Holographic Exhibit Including Holo TV (holographic Television)

    Science.gov (United States)

    Lunazzi, José J.; Magalhães, Daniel S. F.; Rivera, Noemí I. R.

    2008-04-01

    Our Institute of Physics exposes since 1980 didactical exhibitions of holography in Brazil where nice holograms are shown altogether with basic experiments of geometric and wave optics. This experiments lead to the understanding of the phenomenon of images of an ample way. Thousands of people have been present at them, in their majority of the Universidade Estadual de Campinas, where since 2002 they have taken the format of a course without formal evaluation. This way the exhibition has been divided in four modules, in each one of them are shown different holograms, experiments of optics and applications of diffractive images with white light developed in the Institute of Physics. The sequence of the learning through the modules begins with the geometric optics, later we explain the wave optics and finally holography. The phenomenon of the diffraction in daily elements is shown experimentally from the beginning. As well as the application of the holographic screens in white light: the television images that appear in front of the screen and the spectator can try to experience the reality illusion. Put something so exclusive (that only exists in the laboratory) to the public is a way to approximate the persons to an investigation in course. The vision of images that seem to be of holograms, but in movement, and size of until a square meter completes this exhibition of an exclusive way in the world.

  1. Amphetamine sensitization in mice is sufficient to produce both manic- and depressive-related behaviors as well as changes in the functional connectivity of corticolimbic structures.

    Science.gov (United States)

    Pathak, G; Ibrahim, B A; McCarthy, S A; Baker, K; Kelly, M P

    2015-08-01

    It has been suggested that amphetamine abuse and withdrawal mimics the diverse nature of bipolar disorder symptomatology in humans. Here, we determined if a single paradigm of amphetamine sensitization would be sufficient to produce both manic- and depressive-related behaviors in mice. CD-1 mice were subcutaneously dosed for 5 days with 1.8 mg/kg d-amphetamine or vehicle. On days 6-31 of withdrawal, amphetamine-sensitized (AS) mice were compared to vehicle-treated (VT) mice on a range of behavioral and biochemical endpoints. AS mice demonstrated reliable mania- and depression-related behaviors from day 7 to day 28 of withdrawal. Relative to VT mice, AS mice exhibited long-lasting mania-like hyperactivity following either an acute 30-min restraint stress or a low-dose 1 mg/kg d-amphetamine challenge, which was attenuated by the mood-stabilizers lithium and quetiapine. In absence of any challenge, AS mice showed anhedonia-like decreases in sucrose preference and depression-like impairments in the off-line consolidation of motor memory, as reflected by the lack of spontaneous improvement across days of training on the rotarod. AS mice also demonstrated a functional impairment in nest building, an ethologically-relevant activity of daily living. Western blot analyses revealed a significant increase in methylation of histone 3 at lysine 9 (H3K9), but not lysine 4 (H3K4), in hippocampus of AS mice relative to VT mice. In situ hybridization for the immediate-early gene activity-regulated cytoskeleton-associated protein (Arc) further revealed heightened activation of corticolimbic structures, decreased functional connectivity between frontal cortex and striatum, and increased functional connectivity between the amygdala and hippocampus of AS mice. The effects of amphetamine sensitization were blunted in C57BL/6J mice relative to CD-1 mice. These results show that a single amphetamine sensitization protocol is sufficient to produce behavioral, functional, and biochemical

  2. Anxiety sensitivity and breath-holding duration in relation to PTSD symptom severity among trauma exposed adults.

    Science.gov (United States)

    Berenz, Erin C; Vujanovic, Anka A; Coffey, Scott F; Zvolensky, Michael J

    2012-01-01

    The present investigation examined the main and interactive effects of anxiety sensitivity and behavioral distress tolerance, indexed using the breath-holding task, in relation to PTSD symptom severity among trauma-exposed adults. Participants were 88 adults (63.6% women; M(age)=22.9, SD=9.1, range=18-62), recruited from the community, who met DSM-IV-TR PTSD Criterion A for lifetime trauma exposure. Covariates included number of potentially traumatic events, nonclinical panic attack history, and participant sex. Anxiety sensitivity was significantly incrementally associated with PTSD total symptom severity, as well as Avoidance and Hyperarousal symptom severity (p'sseverity (p's>.05). However, breath-holding duration emerged as a significant moderator of the association between anxiety sensitivity and PTSD Avoidance symptom severity, such that lower breath-holding duration exacerbated the effect of heightened anxiety sensitivity with regard to PTSD Avoidance symptom severity. Copyright © 2011 Elsevier Ltd. All rights reserved.

  3. Scrutiny Heightens for "Value Added" Research Methods

    Science.gov (United States)

    Viadero, Debra

    2008-01-01

    As value-added research designs gain in popularity and undergo increasing scrutiny, experts are beginning to wave cautionary flags about how best to make use of them in education. Value-added techniques for measuring student achievement appeal to administrators and policymakers at all levels of education because they quantify the gains that…

  4. Dietary restraint and heightened reactivity to food.

    Science.gov (United States)

    Brunstrom, Jeffrey M; Yates, Heather M; Witcomb, Gemma L

    2004-03-01

    Previously, studies have explored the relationship between dietary behavior and salivary reactivity to food. Despite this, it remains unclear which behaviors are associated with enhanced reactivity. One problem is that measures of behavior have not been compared directly. In particular, it is unclear whether elevated reactivity is associated with measures of dietary restraint or with measures of failed dietary control and a tendency to overeat. To address this problem, we compared the association between salivary reactivity and scores on the subscales of the Three-Factor Eating Questionnaire (restraint, disinhibition, and hunger). Estimates of reactivity were derived from the difference between a baseline saliva measure and a similar measure taken in close proximity to hot pizza. Our second aim was to explore how salivary reactivity changes after a meal. Female participants (N=40) were tested before and after a lunch (cheese sandwiches). All tended to show reactivity to pizza before but not after lunch. No significant differences were associated with the disinhibition or hunger subscales. However, prelunch reactivity was significantly greater in those participants with high scores on the restraint scale. This does not appear to be related to reported levels of hunger before lunch. Rather, it may reveal an intrinsic difference between the reaction of restrained and unrestrained eaters to food.

  5. Stable functional networks exhibit consistent timing in the human brain.

    Science.gov (United States)

    Chapeton, Julio I; Inati, Sara K; Zaghloul, Kareem A

    2017-03-01

    Despite many advances in the study of large-scale human functional networks, the question of timing, stability, and direction of communication between cortical regions has not been fully addressed. At the cellular level, neuronal communication occurs through axons and dendrites, and the time required for such communication is well defined and preserved. At larger spatial scales, however, the relationship between timing, direction, and communication between brain regions is less clear. Here, we use a measure of effective connectivity to identify connections between brain regions that exhibit communication with consistent timing. We hypothesized that if two brain regions are communicating, then knowledge of the activity in one region should allow an external observer to better predict activity in the other region, and that such communication involves a consistent time delay. We examine this question using intracranial electroencephalography captured from nine human participants with medically refractory epilepsy. We use a coupling measure based on time-lagged mutual information to identify effective connections between brain regions that exhibit a statistically significant increase in average mutual information at a consistent time delay. These identified connections result in sparse, directed functional networks that are stable over minutes, hours, and days. Notably, the time delays associated with these connections are also highly preserved over multiple time scales. We characterize the anatomic locations of these connections, and find that the propagation of activity exhibits a preferred posterior to anterior temporal lobe direction, consistent across participants. Moreover, networks constructed from connections that reliably exhibit consistent timing between anatomic regions demonstrate features of a small-world architecture, with many reliable connections between anatomically neighbouring regions and few long range connections. Together, our results demonstrate

  6. Corticosterone Influences on Mammalian Neonatal Sensitive-Period Learning

    OpenAIRE

    Moriceau, Stephanie; Sullivan, Regina M

    2004-01-01

    Infant rats exhibit sensitive-period odor learning characterized by olfactory bulb neural changes and odor preference acquisitions critical for survival. This sensitive period is coincident with low endogenous corticosterone (CORT) levels and stress hyporesponsivity. The authors hypothesized that low corticosterone levels modulate sensitive-period learning. They assessed the effects of manipulating CORT levels by increasing and removing CORT during (Postnatal Day 8) and after (Postnatal Day 1...

  7. BOLD subjective value signals exhibit robust range adaptation.

    Science.gov (United States)

    Cox, Karin M; Kable, Joseph W

    2014-12-03

    Many theories of decision making assume that choice options are assessed along a common subjective value (SV) scale. The neural correlates of SV are widespread and reliable, despite the wide variation in the range of values over which decisions are made (e.g., between goods worth a few dollars, in some cases, or hundreds of dollars, in others). According to adaptive coding theories (Barlow, 1961), an efficient value signal should exhibit range adaptation, such that neural activity maintains a fixed dynamic range, and the slope of the value response varies inversely with the range of values within the local context. Although monkey data have demonstrated range adaptation in single-unit correlates of value (Padoa-Schioppa, 2009; Kobayashi et al., 2010), whether BOLD value signals exhibit similar range adaptation is unknown. To test for this possibility, we presented human participants with choices between a fixed immediate and variable delayed payment options. Across two conditions, the delayed options' SVs spanned either a narrow or wide range. SV-tracking activity emerged in the posterior cingulate, ventral striatum, anterior cingulate, and ventromedial prefrontal cortex. Throughout this network, we observed evidence consistent with the predictions of range adaptation: the SV response slope increased in the narrow versus wide range, with statistically significant slope changes confirmed for the posterior cingulate and ventral striatum. No regions exhibited a reliably increased BOLD activity range in the wide versus narrow condition. Our observations of range adaptation present implications for the interpretation of BOLD SV responses that are measured across different contexts or individuals. Copyright © 2014 the authors 0270-6474/14/3316533-11$15.00/0.

  8. Inauguration of the Exhibition of the Volmeur collection

    CERN Document Server

    Le Meur, Jean-Yves

    2018-01-01

    Several hundred slide photos of CERN, created in the 1980s for the Large Electron-Positron Collider (LEP) have not survived the ravages of time. They have deteriorated so badly that it is often impossible to tell what they are supposed to show. But, in doing so, they have become abstract canvases, true works of art. A dozen of these amazing images have been revealed in CERN Main Building on the 29th of January 2018 and are exhibited up to 9th of February.

  9. Homogeneous illusion device exhibiting transformed and shifted scattering effect

    Science.gov (United States)

    Mei, Jin-Shuo; Wu, Qun; Zhang, Kuang; He, Xun-Jun; Wang, Yue

    2016-06-01

    Based on the theory of transformation optics, a type of homogeneous illusion device exhibiting transformed and shifted scattering effect is proposed in this paper. The constitutive parameters of the proposed device are derived, and full-wave simulations are performed to validate the electromagnetic properties of transformed and shifted scattering effect. The simulation results show that the proposed device not only can visually shift the image of target in two dimensions, but also can visually transform the shape of target. It is expected that such homogeneous illusion device could possess potential applications in military camouflage and other field of electromagnetic engineering.

  10. Mies in Brussels 1934. Synthesis of an Unbuilt Exhibition Architecture

    Directory of Open Access Journals (Sweden)

    Laura Lizondo Sevilla

    2016-04-01

    Full Text Available The article delves into the complex world of exhibition architectures, those whose destiny is reduced to be mounted, exposed and dismantled in a short period of time. A process that allows a quick experience of architecture, bounded in time, and whose experimentation gives rise to the birth of new concepts. The text focuses on the German Pavilion designed by Mies van der Rohe for the Brussels World’s Fair of 1934, his only unbuilt ephemeral architecture due to the political uniqueness of the moment. Now, criticism and the archive allow us to reinterpret its contribution to the history of architecture.

  11. Designing Meta Material Slabs Exhibiting Negative Refraction Using Topology Optimization

    DEFF Research Database (Denmark)

    Christiansen, Rasmus Ellebæk; Sigmund, O.

    2016-01-01

    This paper proposes a topology optimization based approach for designing meta materials exhibiting a desired negative refraction with high transmission at a given angle of incidence and frequency. The approach considers a finite slab of meta material consisting of axis-symmetric designable unit...... cells subjected to an exterior field. The unit cell is designed to achieve the desired properties based on tailoring the response of the meta material slab underthe exterior field. The approach is directly applicable to physical problems modeled by the Helmholtz equation, such as acoustic, elastic...

  12. Parallax Park - A bilingual, outdoor, interactive family exhibit

    Science.gov (United States)

    Hemenway, M. K.; Benedict, G. F.; Preston, S. L.; Armosky, B. J.; Cianciolo, F. W., Jr.; Wetzel, M. N.; Freeman, R.; Ransenberg, A.

    2004-12-01

    We present a design for Parallax Park, an outdoor, interactive family exhibit for McDonald Observatory that will bring the quest for learning about extra-solar planets and the astronomical distance ladder down to Earth for the more than 100,000 visitors who come to the Observatory each year. The Park will teach visitors the basic principles of astrometry. It will concentrate on distance determination and extrasolar planet detection, and emphasize the advantages of space-based astrometric measurements. Visitors will experience parallax by traveling a path around a representation of the Sun, mimicking Earth's orbit, while viewing representations of stars at various distances and in various directions. Concepts include Cepheids as standard candles, the inverse square law, and motion around a center of mass. The exhibit includes interactive components suitable for children's use. Text labels and printed guides, in English and Spanish, will explain how to use the Park to explore the uses of astrometry in modern science. This program was made possible through funding from the Hubble Space Telescope Cycle 11 and 12 Education and Public Outreach Grant Programs. Support from the NASA/JPL Space Interferometry Mission (JPL contract #1227563) is also gratefully acknowledged.

  13. A more modern look for the Council Chamber exhibition

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    When the Council Chamber was renovated, the old photographs displayed on the walls were taken down... they've now been replaced by new panels printed on Plexiglas. The theme of the exhibition is still the history of CERN, but it now features the very latest from graphic design. Fabienne Marcastel, who designed it, tells us more. Two of the new panels recently installed in the Council Chamber. The presentation is simple and elegant. The content is based essentially on the accelerators and the aim of the graphic design is not to attract the public's attention to the panels but rather to provide a pleasant décor for the Chamber's users. "The old photographs stopped at the LEP. The new panels show the history of CERN but also what the Laboratory is like today. Visually, the plan is the starting point, the key to understanding how CERN has changed. It shows how CERN occupies the land it is built on," explains Fabienne Marcastel, the exhibition's graphic designer. The four panels a...

  14. Industrial Exhibition “11th Germany at CERN“

    CERN Multimedia

    FP Department

    2010-01-01

    Administration Building (Bldg. 60/61) Tuesday 25 January: 11a.m. - 5.30 p.m. Wednesday 26 January: 9 a.m. - 5 p.m. The Federal Ministry of Education and Research (BMBF), together with CERN, will hold the Industrial Exhibition “11th Germany at CERN”. Some 30 German companies will present their latest products/technologies related to the field of particle physics and their services to the scientists and buyers of CERN, establish contacts and find out about future purchasing opportunities. On 25 January, Dr. B. Vierkorn-Rudolph of the Federal Ministry of Education and Research and CERN Director-General, Prof. R. D. Heuer, will open the exhibition, followed by a tour of the stands. The main subjects are: electrical engineering, electronics, informatics, mechanical engineering, vacuum & low temperature technologies, instrumentation and safety. CERN staff wishing to obtain information concerning the programme, the exhibitors and their profiles or to get in contact with exhibitors are r...

  15. Industrial Exhibition “11th Germany at CERN“

    CERN Multimedia

    FP Department

    2011-01-01

    Administration Building (Bldg. 60/61) Tuesday 25 January: 11a.m. - 5.30 p.m. Wednesday 26 January: 9 a.m. - 5 p.m. The Federal Ministry of Education and Research (BMBF), together with CERN, will hold the Industrial Exhibition “11th Germany at CERN”. Some 30 German companies will present their latest products/technologies related to the field of particle physics and their services to the scientists and buyers of CERN, establish contacts and find out about future purchasing opportunities. On 25 January, Dr. B. Vierkorn-Rudolph of the Federal Ministry of Education and Research and CERN Director-General, Prof. R. D. Heuer, will open the exhibition, followed by a tour of the stands. The main subjects are: electrical engineering, electronics, informatics, mechanical engineering, vacuum & low temperature technologies, instrumentation and safety. CERN staff wishing to obtain information concerning the programme, the exhibitors and their profiles or to get in contact with exhibitors are ...

  16. Exhibition | CERN Micro Club | 1-30 September

    CERN Multimedia

    2014-01-01

    The CERN Micro Club (CMC) is organising an exhibition looking back on the origins of the personal computer, also known as the micro-computer, to mark the 60th anniversary of CERN and the club’s own 30th anniversary.   CERN, Building 567, R-021 and R-029 01.09.2014 - 30.09.2014 from 4.00 to 6.00 p.m. The exhibition will be held in the club’s premises (Building 567, rooms R-0121 and R-029) and will be open Mondays to Thursdays from 1 to 30 September 2014. Come and admire, touch and use makes and models that disappeared from the market many years ago, such as Atari, Commodore, Olivetti, DEC, IBM and Apple II and III, all in good working order and installed with applications and games from the period. Club members will be on hand to tell you about these early computers, which had memories of just of a few kilobytes, whereas those of modern computers can reach several gigabytes or even terabytes.

  17. An application of projection imaging systems for museum exhibitions

    Science.gov (United States)

    Miyata, Kimiyoshi; Takiguchi, Takahiro; Nakaguchi, Toshiya; Tsumura, Norimichi; Miyake, Yoichi

    2008-01-01

    Museums hold a wide variety of cultural properties and they organize exhibitions for the public. In history museums, a number of interpretive materials are necessary to present a specific historical theme. However, due to limitation of space, the number of displayed materials is severely restricted. There are various types of guidance systems in museums, however, most systems have not yet responded to visitors' needs. Therefore, a useful guidance system is necessary to satisfy their needs and also to enhance their understandings of the exhibitions. In order to create such guidance system, applications of imaging technology can become a solution to overcome these restrictions and meet the requirements. In this research, a visual guidance system using a data projector was examined in the National Museum of Japanese History. In the kimono (traditional Japanese clothing) section, the projector was used to simulate color changes of the materials under different illuminants. The projector also highlighted areas where annotations were featured in the kimono. The validity of using the projector system was confirmed by results from an interview survey. To further develop this visual guidance system, an augmented reality system consisted of cooperation between the projector and a digital camera was also examined.

  18. Smokers exhibit biased neural processing of smoking and affective images.

    Science.gov (United States)

    Oliver, Jason A; Jentink, Kade G; Drobes, David J; Evans, David E

    2016-08-01

    There has been growing interest in the role that implicit processing of drug cues can play in motivating drug use behavior. However, the extent to which drug cue processing biases relate to the processing biases exhibited to other types of evocative stimuli is largely unknown. The goal of the present study was to determine how the implicit cognitive processing of smoking cues relates to the processing of affective cues using a novel paradigm. Smokers (n = 50) and nonsmokers (n = 38) completed a picture-viewing task, in which participants were presented with a series of smoking, pleasant, unpleasant, and neutral images while engaging in a distractor task designed to direct controlled resources away from conscious processing of image content. Electroencephalogram recordings were obtained throughout the task for extraction of event-related potentials (ERPs). Smokers exhibited differential processing of smoking cues across 3 different ERP indices compared with nonsmokers. Comparable effects were found for pleasant cues on 2 of these indices. Late cognitive processing of smoking and pleasant cues was associated with nicotine dependence and cigarette use. Results suggest that cognitive biases may extend across classes of stimuli among smokers. This raises important questions about the fundamental meaning of cognitive biases, and suggests the need to consider generalized cognitive biases in theories of drug use behavior and interventions based on cognitive bias modification. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  19. Chimpanzees and bonobos exhibit emotional responses to decision outcomes.

    Science.gov (United States)

    Rosati, Alexandra G; Hare, Brian

    2013-01-01

    The interface between cognition, emotion, and motivation is thought to be of central importance in understanding complex cognitive functions such as decision-making and executive control in humans. Although nonhuman apes have complex repertoires of emotional expression, little is known about the role of affective processes in ape decision-making. To illuminate the evolutionary origins of human-like patterns of choice, we investigated decision-making in humans' closest phylogenetic relatives, chimpanzees (Pan troglodytes) and bonobos (Pan paniscus). In two studies, we examined these species' temporal and risk preferences, and assessed whether apes show emotional and motivational responses in decision-making contexts. We find that (1) chimpanzees are more patient and more risk-prone than are bonobos, (2) both species exhibit affective and motivational responses following the outcomes of their decisions, and (3) some emotional and motivational responses map onto species-level and individual-differences in decision-making. These results indicate that apes do exhibit emotional responses to decision-making, like humans. We explore the hypothesis that affective and motivational biases may underlie the psychological mechanisms supporting value-based preferences in these species.

  20. Chimpanzees and bonobos exhibit emotional responses to decision outcomes.

    Directory of Open Access Journals (Sweden)

    Alexandra G Rosati

    Full Text Available The interface between cognition, emotion, and motivation is thought to be of central importance in understanding complex cognitive functions such as decision-making and executive control in humans. Although nonhuman apes have complex repertoires of emotional expression, little is known about the role of affective processes in ape decision-making. To illuminate the evolutionary origins of human-like patterns of choice, we investigated decision-making in humans' closest phylogenetic relatives, chimpanzees (Pan troglodytes and bonobos (Pan paniscus. In two studies, we examined these species' temporal and risk preferences, and assessed whether apes show emotional and motivational responses in decision-making contexts. We find that (1 chimpanzees are more patient and more risk-prone than are bonobos, (2 both species exhibit affective and motivational responses following the outcomes of their decisions, and (3 some emotional and motivational responses map onto species-level and individual-differences in decision-making. These results indicate that apes do exhibit emotional responses to decision-making, like humans. We explore the hypothesis that affective and motivational biases may underlie the psychological mechanisms supporting value-based preferences in these species.

  1. Endophytic Fungi Isolated from Coleus amboinicus Lour Exhibited Antimicrobial Activity

    Directory of Open Access Journals (Sweden)

    Puji Astuti

    2014-12-01

    Full Text Available Purpose: Coleus amboinicus is a medicinal plant traditionally used to treat various diseases such as throat infection, cough and fever, diarrhea, nasal congestion and digestive problems. The plant was explored for endophytic fungi producing antimicrobial agents. Methods: Screening for endophytic fungi producing antimicrobial agents was conducted using agar plug method and antimicrobial activity of promising ethyl acetate extracts was determined by disc diffusion assay. Thin layer chromatography (TLC - bioautography was performed to localize the bioactive components within the extract. TLC visualization detection reagents were used to preliminary analyze phytochemical groups of the bioactive compounds. Results: Three endophytic fungi were obtained, two of them showed promising potential. Agar diffusion method showed that endophytic fungi CAL-2 exhibited antimicrobial activity against P. aeruginosa, B. subtilis, S. aureus and S. thypi, whilst CAS-1 inhibited the growth of B. subtilis. TLC bioautography of ethyl acetate extract of CAL-2 revealed at least three bands exhibited antimicrobial activity and at least two bands showed inhibition of B. subtilis growth. Preliminary analysis of the crude extracts suggests that bioactive compounds within CAL-2 extract are terpenoids, phenolics and phenyl propanoid compounds whilst the antimicrobial agents within CAS-1 extract are terpenoids, propylpropanoids, alkaloids or heterocyclic nitrogen compounds. Conclusion: These data suggest the potential of endophytic fungi of C. amboinicus as source for antimicrobial agents.

  2. Endophytic Fungi Isolated from Coleus amboinicus Lour Exhibited Antimicrobial Activity.

    Science.gov (United States)

    Astuti, Puji; Sudarsono, Sudarsono; Nisak, Khoirun; Nugroho, Giri Wisnu

    2014-12-01

    Coleus amboinicus is a medicinal plant traditionally used to treat various diseases such as throat infection, cough and fever, diarrhea, nasal congestion and digestive problems. The plant was explored for endophytic fungi producing antimicrobial agents. Screening for endophytic fungi producing antimicrobial agents was conducted using agar plug method and antimicrobial activity of promising ethyl acetate extracts was determined by disc diffusion assay. Thin layer chromatography (TLC) - bioautography was performed to localize the bioactive components within the extract. TLC visualization detection reagents were used to preliminary analyze phytochemical groups of the bioactive compounds. Three endophytic fungi were obtained, two of them showed promising potential. Agar diffusion method showed that endophytic fungi CAL-2 exhibited antimicrobial activity against P. aeruginosa, B. subtilis, S. aureus and S. thypi, whilst CAS-1 inhibited the growth of B. subtilis. TLC bioautography of ethyl acetate extract of CAL-2 revealed at least three bands exhibited antimicrobial activity and at least two bands showed inhibition of B. subtilis growth. Preliminary analysis of the crude extracts suggests that bioactive compounds within CAL-2 extract are terpenoids, phenolics and phenyl propanoid compounds whilst the antimicrobial agents within CAS-1 extract are terpenoids, propylpropanoids, alkaloids or heterocyclic nitrogen compounds. These data suggest the potential of endophytic fungi of C. amboinicus as source for antimicrobial agents.

  3. Thoracolumbar spinal ligaments exhibit negative and transverse pre-strain.

    Science.gov (United States)

    Robertson, Daniel J; Von Forell, Gregory A; Alsup, Jeremy; Bowden, Anton E

    2013-07-01

    The present work represents the first reported bi-axial spinal ligament pre-strain data for the thoracic and lumbar spine. Ligament pre-strain (in-situ strain) is known to significantly alter joint biomechanics. However, there is currently a lack of comprehensive data with regards to spinal ligament pre-strain. The current work determined the pre-strain of 71 spinal ligaments (30 anterior longitudinal ligaments, 27 supraspinous ligaments and 14 interspinous ligaments). The interspinous ligament and the anterior longitudinal ligament exhibited bi-axial pre-strain distributions, demonstrating they are not uniaxial structures. The supraspinous ligament frequently exhibited large amounts of negative pre-strain or laxity suggesting it makes no mechanical contribution to spinal stability near the neutral posture. Upon implementing multi-axial pre-strain results into a finite element model of the lumbar spine, large differences in spinal biomechanics were observed. These results demonstrate the necessity of accounting for ligament pre-strain in biomechanical models. In addition, the authors present a unique experimental method for obtaining ligament pre-strain that presents a number of advantages when compared to standard techniques. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. Recreational runners with patellofemoral pain exhibit elevated patella water content.

    Science.gov (United States)

    Ho, Kai-Yu; Hu, Houchun H; Colletti, Patrick M; Powers, Christopher M

    2014-09-01

    Increased bone water content resulting from repetitive patellofemoral joint overloading has been suggested to be a possible mechanism underlying patellofemoral pain (PFP). To date, it remains unknown whether persons with PFP exhibit elevated bone water content. The purpose of this study was to determine whether recreational runners with PFP exhibit elevated patella water content when compared to pain-free controls. Ten female recreational runners with a diagnosis of PFP (22 to 39years of age) and 10 gender, age, weight, height, and activity matched controls underwent chemical-shift-encoded water-fat magnetic resonance imaging (MRI) to quantify patella water content (i.e., water-signal fraction). Differences in bone water content of the total patella, lateral aspect of the patella, and medial aspect of the patella were compared between groups using independent t tests. Compared with the control group, the PFP group demonstrated significantly greater total patella bone water content (15.4±3.5% vs. 10.3±2.1%; P=0.001), lateral patella water content (17.2±4.2% vs. 11.5±2.5%; P=0.002), and medial patella water content (13.2±2.7% vs. 8.4±2.3%; Prunners with PFP is suggestive of venous engorgement and elevated extracellular fluid. In turn, this may lead to an increase in intraosseous pressure and pain. Copyright © 2014 Elsevier Inc. All rights reserved.

  5. Sensitivity and uncertainty analysis

    CERN Document Server

    Cacuci, Dan G; Navon, Ionel Michael

    2005-01-01

    As computer-assisted modeling and analysis of physical processes have continued to grow and diversify, sensitivity and uncertainty analyses have become indispensable scientific tools. Sensitivity and Uncertainty Analysis. Volume I: Theory focused on the mathematical underpinnings of two important methods for such analyses: the Adjoint Sensitivity Analysis Procedure and the Global Adjoint Sensitivity Analysis Procedure. This volume concentrates on the practical aspects of performing these analyses for large-scale systems. The applications addressed include two-phase flow problems, a radiative c

  6. [Study of thromboplastin sensitivity].

    Science.gov (United States)

    Kachalova, N D; Prostakova, T M; Kozlov, A A

    2001-03-01

    Comparative analysis of foreign and Russian thromboplastins demonstrated differences in the notions "activity" and "sensitivity" and the significance of low value of International Index of Sensitivity (IIS). Sensitivity of thromboplastin manufactured by RENAM Firm, Russia (IIS = 1.5) to deficiency of prothrombin factors II, VII, X has been demonstrated, which means that this thromboplastin can be used for diagnosis of deficiency of each of these factors. The authors consider that testing of thromboplastin sensitivity to factor VII is the main criterion of its fitness for monitoring anticoagulant therapy.

  7. Muscle stiffness and spinal stretch reflex sensitivity in the triceps surae.

    Science.gov (United States)

    Blackburn, J Troy; Padua, Darin A; Guskiewicz, Kevin M

    2008-01-01

    Greater musculotendinous stiffness may enhance spinal stretch reflex sensitivity by improving mechanical coupling of the muscle spindle and the stretch stimulus. This heightened sensitivity would correspond with a shorter latency and higher-amplitude reflex response, potentially enhancing joint stability. To compare spinal stretch reflex latency and amplitude across groups that differed in musculotendinous stiffness. Static group comparisons. Research laboratory. Forty physically active individuals (20 men, 20 women). We verified a sex difference in musculotendinous stiffness and compared spinal stretch reflex latency and amplitude in high-stiffness (men) and low-stiffness (women) groups. We also evaluated relationships between musculotendinous stiffness and spinal stretch reflex latency and amplitude, respectively. Triceps surae musculotendinous stiffness and soleus spinal stretch reflex latency and amplitude were assessed at 30% of a maximal voluntary isometric plantar-flexion contraction. The high-stiffness group demonstrated significantly greater stiffness (137.41 +/- 26.99 N/cm) than the low-stiffness group did (91.06 +/- 20.10 N/cm). However, reflex latency (high stiffness = 50.11 +/- 2.07 milliseconds, low stiffness = 48.26 +/- 2.40 milliseconds) and amplitude (high stiffness = 0.28% +/- 0.12% maximum motor response, low stiffness = 0.31% +/- 0.16% maximum motor response) did not differ significantly across stiffness groups. Neither reflex latency (r = .053, P = .746) nor amplitude (r = .073, P = .653) was related significantly to musculotendinous stiffness. A moderate level of pretension (eg, 30%) likely eliminates series elastic slack; thus, a greater change in force per unit-of-length change (ie, heightened stiffness) would have minimal effects on coupling of the muscle spindle and the stretch stimulus and, therefore, on spinal stretch reflex sensitivity. It appears unlikely that differences in musculotendinous stiffness influenced spinal stretch reflex

  8. Engagement In Climate Change Awareness Through Art Exhibitions

    Science.gov (United States)

    Burko, D.

    2016-12-01

    Artists such as myself can influence the public discourse on climate change through compelling imagery transcending data and language. I will speak specifically to how I communicate scientific research to diverse populations by making those issues personal, visceral, and actionable.I began integrating scientific visual data into my aesthetic practice ten years ago by first utilizing archival evidence in the form of repeats, geological charts of recessional lines, graphs, symbols and Landsat maps. I continue to develop visual strategies delivering information on an emotional/non-verbal level. In the past 4 years, I have added the most dramatic layer to my creative process: bearing witness. I've been to the three largest ice fields in the world: Greenland, Antarctica and Argentina's Patagonia, observing the unprecedented pace of glacial melt. The emotional significance of actually being there as an artist is immense. Those expeditions impact my practice, leading to exhibitions that open a dialog with an audience not initially interested in science. In the past 5 years my work has appeared in 6 solo and 19 group exhibits all devoted to the environment. I make myself present in universities, museums and galleries to explain what the images are about. I require universities to include a public component: an all-college lecture or panel where the geography/environmental/sociology/geology departments participate with broad student involvement. I believe that such endeavors are worthwhile and can be models for further efforts to educate an unsuspecting audience. Artists can bridge the gap communicating to a public of art appreciators, nonscientists - how easy it is to understand geology and global warming. This social engagement can even inspire and result in attitudinal changes. A viewer's initial emotional response to my large paintings and photographs evolves into comprehension as a dialog about their content is revealed. By sharing my personal story about my

  9. Case study of virtual reality in CNC machine tool exhibition

    Directory of Open Access Journals (Sweden)

    Kao Yung-Chou

    2017-01-01

    Full Text Available Exhibition and demonstration are generally used in the promotion and sale-assistance of manufactured products. However, the transportation cost of the real goods from the vender factory to the exposition venue is generally expensive for huge and heavy commodity. With the advancement of computing, graphics, mobile apps, and mobile hardware the 3D visibility technology is getting more and more popular to be adopted in visual-assisted communication such as amusement games. Virtual reality (VR technology has therefore being paid great attention in emulating expensive small and/or huge and heavy equipment. Virtual reality can be characterized as 3D extension with Immersion, Interaction and Imagination. This paper was then be focused on the study of virtual reality in the assistance of CNC machine tool demonstration and exhibition. A commercial CNC machine tool was used in this study to illustrate the effectiveness and usability of using virtual reality for an exhibition. The adopted CNC machine tool is a large and heavy mill-turn machine with the width up to eleven meters and weighted about 35 tons. A head-mounted display (HMD was attached to the developed VR CNC machine tool for the immersion viewing. A user can see around the 3D scene of the large mill-turn machine and the operation of the virtual CNC machine can be actuated by bare hand. Coolant was added to demonstrate more realistic operation while collision detection function was also added to remind the operator. The developed VR demonstration system has been presented in the 2017 Taipei International Machine Tool Show (TIMTOS 2017. This case study has shown that young engineers and/or students are very impressed by the VR-based demonstration while elder persons could not adapt themselves easily to the VR-based scene because of eyesight issues. However, virtual reality has successfully being adopted and integrated with the CNC machine tool in an international show. Another machine tool on

  10. Enhanced music sensitivity in 9-month-old bilingual infants.

    Science.gov (United States)

    Liu, Liquan; Kager, René

    2017-02-01

    This study explores the influence of bilingualism on the cognitive processing of language and music. Specifically, we investigate how infants learning a non-tone language perceive linguistic and musical pitch and how bilingualism affects cross-domain pitch perception. Dutch monolingual and bilingual infants of 8-9 months participated in the study. All infants had Dutch as one of the first languages. The other first languages, varying among bilingual families, were not tone or pitch accent languages. In two experiments, infants were tested on the discrimination of a lexical (N = 42) or a violin (N = 48) pitch contrast via a visual habituation paradigm. The two contrasts shared identical pitch contours but differed in timbre. Non-tone language learning infants did not discriminate the lexical contrast regardless of their ambient language environment. When perceiving the violin contrast, bilingual but not monolingual infants demonstrated robust discrimination. We attribute bilingual infants' heightened sensitivity in the musical domain to the enhanced acoustic sensitivity stemming from a bilingual environment. The distinct perceptual patterns between language and music and the influence of acoustic salience on perception suggest processing diversion and association in the first year of life. Results indicate that the perception of music may entail both shared neural network with language processing, and unique neural network that is distinct from other cognitive functions.

  11. Normal and Malignant Cells Exhibit Differential Responses to Calcium Electroporation.

    Science.gov (United States)

    Frandsen, Stine K; Krüger, Mie B; Mangalanathan, Uma M; Tramm, Trine; Mahmood, Faisal; Novak, Ivana; Gehl, Julie

    2017-08-15

    Calcium electroporation may offer a simple general tool for anticancer therapy. Transient permeabilization of cancer cell membranes created by applying short, high-voltage pulses in tumors enables high calcium influxes that trigger cell death. In this study, we compared the relative sensitivity of different human tumor models and normal tissues to calcium electroporation. Plasma membrane Ca(2+)-ATPase (PMCA) protein expression was confirmed in vitro in all cancer cell lines and normal primary dermal fibroblasts studied. In all tumor types tested in vivo, calcium electroporation effectively induced necrosis, with a range of sensitivities observed (36%-88%) 2 days after treatment. Necrosis was induced using calcium concentrations of 100-500 mmol/L and injection volumes 20%-80% of tumor volume. Notably, only limited effects were seen in normal tissue. Calcium content increased >7-fold in tumor and skin tissue after calcium electroporation but decreased in skin tissue 4 hours after treatment to levels comparable with untreated controls, whereas calcium content endured at high levels in tumor tissue. Mechanistic experiments in vitro indicated that calcium influx was similar in fibroblasts and cancer cells. However, we observed decreased PMCA expression in cancer cells compared with fibroblasts, offering a potential explanation for the different calcium content in tumor cells versus normal tissues. Overall, our results suggest that calcium electroporation can elicit a rapid and selective necrosis of solid tumors, with limited deleterious effects on surrounding normal tissues. Cancer Res; 77(16); 4389-401. ©2017 AACR. ©2017 American Association for Cancer Research.

  12. Assessing Sensitiveness to Transport

    DEFF Research Database (Denmark)

    Lieb, Christoph; Suter, Stefan; Sánchez, Alfredo

    Summary The EU-project ASSET (ASessing SEnsitiveness to Transport) aims at developing and implementing a concise concept to assess transport sensitive areas (TSA) in a European context, i.e. areas in which transport leads to more serious impacts than in other areas. The aim of work package 2 (WP2...

  13. Structure sensitivity in adsorption

    DEFF Research Database (Denmark)

    Hammer, Bjørk; Nielsen, Ole Holm; Nørskov, Jens Kehlet

    1997-01-01

    The structure sensitivity of CO adsorption on different flat, stepped, kinked and reconstructed Pt surfaces is studied using large-scale density-functional calculations. We find an extremely strong structure sensitivity in the adsorption energy with variations up to 1 eV (or 100%) from one...

  14. Bougainvillea spectabilis Exhibits Antihyperglycemic and Antioxidant Activities in Experimental Diabetes.

    Science.gov (United States)

    Chauhan, Pratibha; Mahajan, Sunil; Kulshrestha, Archana; Shrivastava, Sadhana; Sharma, Bechan; Goswamy, H M; Prasad, G B K S

    2016-07-01

    The study investigates the effects of aqueous extract of Bougainvillea spectabilis leaves on blood glucose, glycosylated hemoglobin, lipid profile, oxidative stress, and on DNA damage, if any, as well as on liver and kidney functions in streptozotocin-induced diabetes in Wistar rats. Daily administration of the aqueous extract of B spectabilis leaves for 28 days resulted in significant reduction in hyperglycemia and hyperlipidemia as evident from restoration of relevant biochemical markers following extract administration. The extract also exhibited significant antioxidant activity as evidenced from the enzymatic and nonenzymatic responses and DNA damage markers. The extract restored kidney and liver functions to normal and proved to be nontoxic. A marked improvement in the histological changes of tissues was also observed. The present study documented antihyperglycemic, antihyperlipidemic, and antioxidative potentials of the aqueous extract of B spectabilis leaves without any toxicity in streptozotocin-treated Wistar rats. © The Author(s) 2015.

  15. Exhibition and Surveillance on the Internet: A Critical Reading

    Directory of Open Access Journals (Sweden)

    Güler Demir

    2016-09-01

    Full Text Available The internet, new media, and social media environments should not be assessed only in terms of conveniences and opportunities that offer within the framework of technology. Along with the positive properties of these environments, there also exist negative aspects of carrying risks, and that may lead to problems. Despite the positive properties such as interaction, sharing, speed, flexibility and convenience, that might also be approached as a global network allowing negativities such as displaying, surveillance, inspection, and profiling. The negativities as mentioned earlier might lead to unrecoverable scientific, socio-economic, psychosocial, social and other consequences. The book “Exhibition and Surveillance on the Internet: a critical reading” by Mukadder Çakır is a thought-provoking book which brings many significant approaches to the internet environment and its tools in a critical context.

  16. The Jellyfish Cassiopea Exhibits a Sleep-like State.

    Science.gov (United States)

    Nath, Ravi D; Bedbrook, Claire N; Abrams, Michael J; Basinger, Ty; Bois, Justin S; Prober, David A; Sternberg, Paul W; Gradinaru, Viviana; Goentoro, Lea

    2017-10-09

    Do all animals sleep? Sleep has been observed in many vertebrates, and there is a growing body of evidence for sleep-like states in arthropods and nematodes [1-5]. Here we show that sleep is also present in Cnidaria [6-8], an earlier-branching metazoan lineage. Cnidaria and Ctenophora are the first metazoan phyla to evolve tissue-level organization and differentiated cell types, such as neurons and muscle [9-15]. In Cnidaria, neurons are organized into a non-centralized radially symmetric nerve net [11, 13, 15-17] that nevertheless shares fundamental properties with the vertebrate nervous system: action potentials, synaptic transmission, neuropeptides, and neurotransmitters [15-20]. It was reported that cnidarian soft corals [21] and box jellyfish [22, 23] exhibit periods of quiescence, a pre-requisite for sleep-like states, prompting us to ask whether sleep is present in Cnidaria. Within Cnidaria, the upside-down jellyfish Cassiopea spp. displays a quantifiable pulsing behavior, allowing us to perform long-term behavioral tracking. Monitoring of Cassiopea pulsing activity for consecutive days and nights revealed behavioral quiescence at night that is rapidly reversible, as well as a delayed response to stimulation in the quiescent state. When deprived of nighttime quiescence, Cassiopea exhibited decreased activity and reduced responsiveness to a sensory stimulus during the subsequent day, consistent with homeostatic regulation of the quiescent state. Together, these results indicate that Cassiopea has a sleep-like state, supporting the hypothesis that sleep arose early in the metazoan lineage, prior to the emergence of a centralized nervous system. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Finnish Teachers’ Ethical Sensitivity

    Directory of Open Access Journals (Sweden)

    Elina Kuusisto

    2012-01-01

    Full Text Available The study examined the ethical sensitivity of Finnish teachers (=864 using a 28-item Ethical Sensitivity Scale Questionnaire (ESSQ. The psychometric qualities of this instrument were analyzed, as were the differences in self-reported ethical sensitivity between practicing and student teachers and teachers of different subjects. The results showed that the psychometric qualities of the ESSQ were satisfactory and enabled the use of an explorative factor analysis. All Finnish teachers rated their level of ethical sensitivity as high, which indicates that they had internalized the ethical professionalism of teaching. However, practicing teachers’ assessments were higher than student teachers’. Moreover, science as a subject was associated with lower self-ratings of ethical sensitivity.

  18. Sensitive skin: An overview

    Directory of Open Access Journals (Sweden)

    Arun C Inamadar

    2013-01-01

    Full Text Available Sensitive skin is less tolerant to frequent and prolonged use of cosmetics and toiletries. It is self-diagnosed and typically unaccompanied by any obvious physical signs of irritation. With the change in lifestyle and also with increased opportunity to use many new brands of cosmetics and toiletries, there has been an increase in females complaining of unique sensation in their facial skin. Sensitive skin presents as smarting, burning, stinging, itching, and/or tight sensation in their facial skin. The condition is found in more than 50% of women and 40% of men, creating a sizable demand for products designed to minimize skin sensitivity. Good numbers of invasive and non-invasive tests are designed to evaluate and predict the sensitive skin. Management includes guidelines for selecting suitable cosmetics and toiletries in sensitive skin individuals.

  19. Sensitive skin: an overview.

    Science.gov (United States)

    Inamadar, Arun C; Palit, Aparna

    2013-01-01

    Sensitive skin is less tolerant to frequent and prolonged use of cosmetics and toiletries. It is self-diagnosed and typically unaccompanied by any obvious physical signs of irritation. With the change in lifestyle and also with increased opportunity to use many new brands of cosmetics and toiletries, there has been an increase in females complaining of unique sensation in their facial skin. Sensitive skin presents as smarting, burning, stinging, itching, and/or tight sensation in their facial skin. The condition is found in more than 50% of women and 40% of men, creating a sizable demand for products designed to minimize skin sensitivity. Good numbers of invasive and non-invasive tests are designed to evaluate and predict the sensitive skin. Management includes guidelines for selecting suitable cosmetics and toiletries in sensitive skin individuals.

  20. Breastfeeding, sensitivity, and attachment.

    Science.gov (United States)

    Britton, John R; Britton, Helen L; Gronwaldt, Virginia

    2006-11-01

    Our goal was to test the hypothesis that breastfeeding is associated with enhanced infant-mother attachment and its antecedent maternal sensitivity. Breastfeeding intent and practice were assessed by questionnaires administered to 152 mothers between 32 weeks of gestation and 12 months postpartum. Early maternal sensitivity was measured by the Sensitivity to Cues subscale of the Nursing Child Assessment Satellite Training Feeding Scale at 3 months, and quality of the mother-infant interaction was measured by the Nursing Child Assessment Satellite Training Feeding Scale at 6 months. Security of attachment was evaluated by the Ainsworth Strange Situation at 12 months. A direct relationship between attachment security and breastfeeding practice was not identified. The quality of the mother-infant interaction at 6 months, rather than the type of feeding, predicted security of attachment. However, mothers who chose to breastfeed displayed greater sensitivity in dyadic interactions with their infants 3 months postnatally than those who chose to bottle feed, and intended breastfeeding duration prenatally correlated with sensitivity 3 months postpartum. Although a path analysis failed to demonstrate contributions of early breastfeeding duration to either sensitivity or security, it did substantiate a significant path between prenatal breastfeeding intent and attachment security mediated by sensitivity. In addition, multivariate analyses revealed that early sensitivity among breastfeeding mothers was an independent predictor of the duration of any and exclusive breastfeeding during the first year. Although the quality of the dyadic interaction in infancy, rather than feeding type, is predictive of attachment security, mothers who choose to breastfeed display enhanced sensitivity during early infancy that, in turn, may foster secure attachment. Among breastfeeding mothers, higher sensitivity is associated with longer duration of breastfeeding during the first postpartum year

  1. BRCA1/2-negative hereditary triple-negative breast cancers exhibit BRCAness.

    Science.gov (United States)

    Domagala, Pawel; Hybiak, Jolanta; Cybulski, Cezary; Lubinski, Jan

    2017-04-01

    BRCA1/2-associated breast cancers are sensitive to poly(ADPribose) polymerase (PARP) inhibitors and platinum compounds mainly due to their deficiency in DNA repair via homologous recombination (HR). However, approximately only 15% of triple-negative breast cancers (TNBCs) are BRCA1/2-associated. TNBCs that exhibit BRCAness (a phenotype reflecting impaired HR in BRCA1/2-negative tumors) are also regarded sensitive to PARP inhibitors and platinum compounds. Thus, we hypothesized that hereditary BRCA1/2-negative TNBCs may exhibit BRCAness. To find a subset of hereditary BRCA1/2-negative TNBCs among 360 TNBCs, we first identified a group of 41 hereditary TNBCs by analyzing the family histories of the patients. Next, we tested this group for the presence of germline BRCA1/2 mutations, and finally, we compared the expression levels of 120 genes involved in HR and five other major mechanisms of DNA damage repair between BRCA1/2-associated and BRCA1/2-negative subgroups of hereditary TNBCs using real-time PCR arrays. Approximately 73% of the hereditary TNBCs were BRCA1/2-associated and 27% were BRCA1/2-negative. The expression levels of the analyzed genes showed no significant differences between these two subgroups indicating the BRCAness of the BRCA1/2-negative hereditary TNBCs and thereby distinguishing a novel subset of TNBCs as a potential target for PARP inhibitors or platinum-based therapy. The results show the significance of family history in selecting patients with TNBC for therapies directed at incompetent DNA repair (e.g., PARP inhibitors and/or platinum-based therapies) and indicate that a relatively simple strategy for broadening the target group for these modes of treatment is to identify patients with hereditary TNBCs. © 2016 UICC.

  2. Porphyromonas gingivalis-stimulated macrophage subsets exhibit differential induction and responsiveness to interleukin-10.

    Science.gov (United States)

    Foey, Andrew D; Habil, Neama; Al-Shaghdali, Khalid; Crean, StJohn

    2017-01-01

    Oral mucosal macrophages (Mϕs) determine immune responses; maintaining tolerance whilst retaining the capacity to activate defences against pathogens. Mϕ responses are determined by two distinct subsets; pro-inflammatory M1- and anti-inflammatory/regulatory M2-Mϕs. Tolerance induction is driven by M2 Mϕs, whereas M1-like Mϕs predominate in inflammation, such as that exhibited in chronic Porphyromonas gingivalis (PG) periodontal infection. Mϕ responses can be suppressed to benefit either the host or the pathogen. Chronic stimulation by pathogen associated molecular patterns (PAMPs), such as LPS, is well established to induce tolerance. The aim of this study was to investigate the P. gingivalis-driven induction of and responsiveness to the suppressive, anti-inflammatory cytokine, IL-10, by Mϕ subsets. M1- and M2-like Mϕs were generated in vitro from the THP-1 monocyte cell line by differentiation with PMA and Vitamin D 3 , respectively. Mϕ subsets were stimulated by PG-LPS in the presence or absence of IL-10. PG-LPS differentially induced IL-10 secretion and endogenous IL-10 activity in M1- and M2-like subsets. In addition, these subsets exhibited differential sensitivity to IL-10-mediated suppression of TNFα, where M2 Mϕs where sensitive to IL-10 and M1 Mϕs were refractory to suppression. In addition, this differential responsiveness to IL-10 was independent of IL-10-binding and expression of the IL-10 receptor signal transducing subunit, IL-10Rβ, but was in fact dependent on activation of STAT-3. P.gingivalis selectively tolerises regulatory M2 Mϕs with little effect on pro-inflammatory M1 Mϕs; differential suppression facilitating immunopathology at the expense of immunity. Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. Interventricular mechanical dyssynchrony determines abnormal heightening of plasma N-terminal probrain natriuretic peptide level in symptomatic bradyarrhythmia patients with chronic dual-chamber vs. single-chamber atrial pacing.

    Science.gov (United States)

    Lin, Jih-Min; Lai, Ling-Ping; Tsai, Chia-Ti; Lin, Lung-Chun; Tseng, Chuen-Den; Lin, Jiunn-Lee

    2008-01-01

    Debates about adverse effects of ventricular- vs. atrial-based pacing have never ended, especially regarding cardiovascular outcomes in common pacemaker populations. To investigate the contribution of right ventricular apical pacing to the left ventricular negative remodeling, we measured the inter- and intraventricular mechanical dyssynchrony by echocardiography as well as plasma N-terminal pro-brain natriuretic peptide (NT-proBNP) level in 116 consecutive patients of symptomatic bradyarrhythmias including sinus node dysfunction (SND) in 80 and atrioventricular block in 36. Dual-chamber rate-modulated pacing (DDDR) pacemakers were implanted in 76 patients (SND, 40), and single-chamber ventricular rate-modulated pacing (AAIR) pacemakers in 40 (all SND). Clinical manifestations were retrospectively correlated. After 3.5 years of pacing, DDDR pacemaker patients demonstrated higher plasma NT-proBNP concentration (503 +/- 111 pg/ml) than AAIR patients (194 +/- 42 pg/ml, p = 0.002) despite similar cardiovascular function at baseline. Multivariate regression analysis revealed that the only predictor of the highest quartile of plasma NT-proBNP, i.e. >or=386 pg/ml, was the interventricular contraction time difference (p = 0.01). Reprogramming to minimize ventricular pacing percentage in 8 patients of SND caused parallel reduction of plasma NT-proBNP. Interventricular mechanical dyssynchrony, imposed mostly by right ventricular apical pacing, could lead to abnormal heightening of plasma NT-proBNP concentration after chronic DDDR pacing in common pacemaker patients with normal baseline left ventricular function. (c) 2007 S. Karger AG, Basel.

  4. A maize CONSTANS-like gene, conz1, exhibits distinct diurnal expression patterns in varied photoperiods.

    Science.gov (United States)

    Miller, Theresa A; Muslin, Elizabeth H; Dorweiler, Jane E

    2008-05-01

    Maize (Zea mays ssp. mays L.) was domesticated from teosinte (Z. mays L. ssp. parviglumis Iltis & Doebley), a plant requiring short day photoperiods to flower. While photoperiod sensitive landraces of maize exist, post-domestication breeding included efforts to grow maize in a broad range of latitudes. Thus, modern maize is often characterized as day-neutral because time to flower is relatively unaffected by photoperiod. We report the first identification of maize constans of Zea mays1 (conz1), a gene with extensive sequence homology to photoperiod genes CONSTANS (CO) in Arabidopsis (Arabidopsis thaliana (L.) Heynh.) and Heading date1 (Hd1) in rice (Oryza sativa L.). conz1 maps to a syntenous chromosomal location relative to Hd1. Additionally, conz1 and two maize homologs of another photoperiod gene exhibit diurnal expression patterns notably similar to their Arabidopsis and rice homologs. The expression pattern of conz1 in long days is distinct from that observed in short days, suggesting that maize is able to discern variations in photoperiod and respond with differential expression of conz1. We offer models to reconcile the differential expression of conz1 with respect to the photoperiod insensitivity exhibited by temperate inbreds.

  5. Hsp90 inhibitors exhibit resistance-free antiviral activity against respiratory syncytial virus.

    Directory of Open Access Journals (Sweden)

    Ron Geller

    Full Text Available Respiratory syncytial virus (RSV is a major cause of respiratory illness in young children, leading to significant morbidity and mortality worldwide. Despite its medical importance, no vaccine or effective therapeutic interventions are currently available. Therefore, there is a pressing need to identify novel antiviral drugs to combat RSV infections. Hsp90, a cellular protein-folding factor, has been shown to play an important role in the replication of numerous viruses. We here demonstrate that RSV requires Hsp90 for replication. Mechanistic studies reveal that inhibition of Hsp90 during RSV infection leads to the degradation of a viral protein similar in size to the RSV L protein, the viral RNA-dependent RNA polymerase, implicating it as an Hsp90 client protein. Accordingly, Hsp90 inhibitors exhibit antiviral activity against laboratory and clinical isolates of RSV in both immortalized as well as primary differentiated airway epithelial cells. Interestingly, we find a high barrier to the emergence of drug resistance to Hsp90 inhibitors, as extensive growth of RSV under conditions of Hsp90 inhibition did not yield mutants with reduced sensitivity to these drugs. Our results suggest that Hsp90 inhibitors may present attractive antiviral therapeutics for treatment of RSV infections and highlight the potential of chaperone inhibitors as antivirals exhibiting high barriers to development of drug resistance.

  6. Normal and malignant cells exhibit differential responses to calcium electroporation

    DEFF Research Database (Denmark)

    Frandsen, Stine Krog; Krüger, Mie Barthold; Mangalanathan, Uma M.

    2017-01-01

    Calcium electroporation may offer a simple general tool for anticancer therapy. Transient permeabilization of cancer cell membranes created by applying short, high-voltage pulses in tumors enables high calcium influxes that trigger cell death. In this study, we compared the relative sensitivity...... of different human tumor models and normal tissues to calcium electroporation. Plasma membrane Ca(2+)-ATPase (PMCA) protein expression was confirmed in vitro in all cancer cell lines and normal primary dermal fibroblasts studied. In all tumor types tested in vivo, calcium electroporation effectively induced...... tissue after calcium electroporation but decreased in skin tissue 4 hours after treatment to levels comparable with untreated controls, whereas calcium content endured at high levels in tumor tissue. Mechanistic experiments in vitro indicated that calcium influx was similar in fibroblasts and cancer...

  7. Sensitization studies in chemically intolerant individuals: implications for individual difference research.

    Science.gov (United States)

    Bell, I R; Baldwin, C M; Schwartz, G E

    2001-03-01

    Chemical intolerance (CI) is an individual difference trait in which persons report feeling ill in multiple physiological systems from low levels of a wide range of chemically unrelated environmental substances. This paper discusses the neural sensitization model for progressive host amplification of polysymptomatic responses elicited by chemical exposures following an initiating event. The sensitization model accommodates hypotheses for initiating and eliciting CI in human populations that involve both environmental chemicals and physical or psychological stressors. Recent studies in this laboratory have demonstrated sensitization in individuals with CI over repeated sessions for dependent variables such as electroencephalographic (EEG) activity and diastolic blood pressure. Psychological distress variables alone do not explain these findings. Individuals with CI and/or vulnerability to sensitization share specific characteristics, for example, female gender, certain genetic background (offspring of alcohol-preferring parents), and personal preference for high sugar/ carbohydrate intake. Overall, the data suggest that the 15-30% of the general population who report heightened CI are highly sensitizable. Sensitizability may serve an adaptive, sentinel function in threatening environments with poor signal-to-noise ratios. However, as sensitization gradually shifts operating set points of physiological systems out of the normal range in response to allostatic load, this process may contribute to the development of chronic, polysymptomatic health conditions such as multiple chemical sensitivity and/or fibromyalgia. Individual response specificity and stereotypy rather than toxicant properties may determine which types of central, autonomic, and/or peripheral nervous system dysfunctions manifest at subclinical and clinical levels.

  8. Role of Reward Sensitivity and Processing in Major Depressive and Bipolar Spectrum Disorders

    Science.gov (United States)

    Alloy, Lauren B.; Olino, Thomas; Freed, Rachel D.; Nusslock, Robin

    2016-01-01

    Since Costello’s (1972) seminal Behavior Therapy article on loss of reinforcers or reinforcer effectiveness in depression, the role of reward sensitivity and processing in both depression and bipolar disorder has become a central area of investigation. In this article, we review the evidence for a model of reward sensitivity in mood disorders, with unipolar depression characterized by reward hyposensitivity and bipolar disorders by reward hypersensitivity. We address whether aberrant reward sensitivity and processing are correlates of, mood-independent traits of, vulnerabilities for, and/or predictors of the course of depression and bipolar spectrum disorders, covering evidence from self-report, behavioral, neurophysiological, and neural levels of analysis. We conclude that substantial evidence documents that blunted reward sensitivity and processing are involved in unipolar depression and heightened reward sensitivity and processing are characteristic of hypomania/mania. We further conclude that aberrant reward sensitivity has a trait component, but more research is needed to clearly demonstrate that reward hyposensitivity and hypersensitivity are vulnerabilities for depression and bipolar disorder, respectively. Moreover, additional research is needed to determine whether bipolar depression is similar to unipolar depression and characterized by reward hyposensitivity, or whether like bipolar hypomania/mania, it involves reward hypersensitivity. PMID:27816074

  9. Mice with Deletion of Neuromedin B Receptor Exhibit Decreased Oral Glucose-Stimulated Insulin Release.

    Science.gov (United States)

    Paula, G S M; Souza, L L; Bressane, N O S; Maravalhas, R; Wilieman, M; Bento-Bernardes, T; Silva, K R; Mendonca, L S; Oliveira, K J; Pazos-Moura, C C

    2016-12-01

    Neuromedin B (NB) and gastrin-releasing peptide (GRP) are bombesin-like peptides, found in the gastrointestinal tube and pancreas, among other tissues. Consistent data proposed that GRP stimulates insulin secretion, acting directly in pancreatic cells or in the release of gastrointestinal hormones that are incretins. However, the role of NB remains unclear. We examined the glucose homeostasis in mice with deletion of NB receptor (NBR-KO). Female NBR-KO exhibited similar fasting basal glucose with lower insulinemia (48.4%) and lower homeostasis model assessment of insulin resistance index (50.5%) than wild type (WT). Additionally, they were more tolerant to oral glucose, demonstrated by a decrease in the area under the glucose curve (18%). In addition, 15 min after an oral glucose load, female and male NBR-KO showed lower insulin serum levels (45.6 and 26.8%, respectively) than WT, even though blood glucose rose to similar levels in both groups. Single injection of NB, one hour before the oral glucose administration, tended to induce higher serum insulin in WT (28.9%, p=0.3), however the same did not occur in NBR-KO. They showed no changes in fasting insulin content in pancreatic islets by immunohistochemistry, however, the fasting serum levels of glucagon-like peptide, a potent incretin, exhibited a strong trend to reduction (40%, p=0.07). Collectively, mice with deletion of NB receptor have lower insulinemia, especially in response to oral glucose, and females also exhibited a better glucose tolerance, suggesting the involvement of NB and its receptor in regulation of insulin secretion induced by incretins, and also, in insulin sensitivity. © Georg Thieme Verlag KG Stuttgart · New York.

  10. RPC gamma sensitivity simulation

    CERN Document Server

    Altieri, S; Bruno, G; Gianini, G; Merlo, M; Ratti, S P; Riccardi, C; Torre, P; Viola, L; Vitulo, P; Abbrescia, M; Colaleo, A; Iaselli, Giuseppe; Loddo, F; Maggi, M; Marangelli, B; Natali, S; Nuzzo, S; Pugliese, G; Ranieri, A; Romano, F; Salvemini, A

    2000-01-01

    A method to simulate resistive plate chambers (RPCs) gamma sensitivity has been developed using a Monte Carlo code. The sensitivity has been evaluated as a function of the gamma energy in the range 0.1-100 MeV and for different spectra. To evaluate the response of the detector in a Large Hadron Collider (LHC) background environment the gamma energy spectrum expected in the CMS muon barrel has been taken into account and the RPC gamma sensitivity evaluated as a function of the detector size. (3 refs).

  11. Corticosterone influences on Mammalian neonatal sensitive-period learning.

    Science.gov (United States)

    Moriceau, Stephanie; Sullivan, Regina M

    2004-04-01

    Infant rats exhibit sensitive-period odor learning characterized by olfactory bulb neural changes and odor preference acquisitions critical for survival. This sensitive period is coincident with low endogenous corticosterone (CORT) levels and stress hyporesponsivity. The authors hypothesized that low corticosterone levels modulate sensitive-period learning. They assessed the effects of manipulating CORT levels by increasing and removing CORT during (Postnatal Day 8) and after (Postnatal Day 12) the sensitive period. Results show that (a) exogenous CORT prematurely ends sensitive-period odor-shock-induced preferences; (b) adrenalectomy developmentally extends the sensitive period as indicated by odor-shock-induced odor-preference learning in older pups, whereas CORT replacement can reinstate fear learning; and (c) CORT manipulation modulates olfactory bulb correlates of sensitive-period odor learning in a manner consistent with behavior.

  12. Risk-sensitivity in sensorimotor control

    Directory of Open Access Journals (Sweden)

    Daniel A. Braun

    2011-01-01

    Full Text Available Recent advances in theoretical neuroscience suggest that motor control can be considered as a continuous decision-making process in which uncertainty plays a key role. Decision-makers can be risk-sensitive with respect to this uncertainty in that they may not only consider the average payoff of an outcome, but also consider the variability of the payoffs. Although such risk-sensitivity is a well-established phenomenon in psychology and economics, it has been much less studied in motor control. In fact, leading theories of motor control, such as optimal feedback control, assume that motor behaviors can be explained as the optimization of a given expected payoff or cost. Here we review evidence that humans exhibit risk-sensitivity in their motor behaviors, thereby demonstrating sensitivity to the variability of ‘motor costs’. Furthermore, we discuss how risk-sensitivity can be incorporated into optimal feedback control models of motor control. We conclude that risk-sensitivity is an important concept in understanding individual motor behavior under uncertainty.

  13. Endogenous Opioid-Masked Latent Pain Sensitization

    DEFF Research Database (Denmark)

    Pereira, Manuel P; Donahue, Renee R; Dahl, Jørgen B

    2015-01-01

    UNLABELLED: Following the resolution of a severe inflammatory injury in rodents, administration of mu-opioid receptor inverse agonists leads to reinstatement of pain hypersensitivity. The mechanisms underlying this form of latent pain sensitization (LS) likely contribute to the development...... of chronic pain, but LS has not yet been demonstrated in humans. Using a C57BL/6 mouse model of cutaneous mild heat injury (MHI) we demonstrated a dose-dependent reinstatement of pain sensitization, assessed as primary (P ... naloxone dose (0.021 mg/kg). However, while LS was consistently demonstrated in 21/24 mice, LS was only seen in 4/12 subjects. This difference is likely due to selection bias since the C57BL/6 mouse strain exhibits markedly enhanced pain sensitivity in assays of acute thermal nociception. Future...

  14. Arabidopsis mutants lacking phenolic sunscreens exhibit enhanced ultraviolet-B injury and oxidative damage

    Energy Technology Data Exchange (ETDEWEB)

    Landry, L.G.; Last, R.L. [Cornell Univ., Ithaca, NY (United States); Chapple, C.C.S. [Purdue Univ., West Lafayette, IN (United States)

    1995-12-01

    We have assessed ultraviolet-B (UV-B)-induced injury in wild-type Arabidopsis thaliana and two mutants with altered aromatic secondary product biosynthesis. Arabidopsis mutants defective in the ability to synthesize UV-B-absorbing compounds (flavonoids in transparent testa 5 [tt5] and sinapate esters in ferulic acid hydroxylase 1 [fah 1]) are more sensitive to UV-B than is the wild-type Landsberg erecta. Despite its ability to accumulate UV-absorptive flavonoid compounds, the ferulic acid hydroxylase mutant fah1 exhibits more physiological injury (growth inhibition and foliar lesions) than either wild type or tt5. The extreme UV-B sensitivity of fah1 demonstrates the importance of hydroxycinnamate esters as UV-B protectants. Consistent with the whole-plant response, the highest levels of lipid and protein oxidation products were seen in fah1. Ascorbate peroxidase enzyme activity was also increased in the leaves of UV-B-treated plants in a dose- and genotype-dependent manner. These results demonstrate that, in A. thaliana, hydryoxycinnamates are more effective UV-B protectants than flavonoids. The data also indicate that A. thaliana responds to UV-B as an oxidative stress, and sunscreen compounds reduce the oxidative damage caused by UV-B. 36 refs., 6 figs.

  15. Cancer cells exhibit clonal diversity in phenotypic plasticity.

    Science.gov (United States)

    Mathis, Robert Austin; Sokol, Ethan S; Gupta, Piyush B

    2017-02-01

    Phenotypic heterogeneity in cancers is associated with invasive progression and drug resistance. This heterogeneity arises in part from the ability of cancer cells to switch between phenotypic states, but the dynamics of this cellular plasticity remain poorly understood. Here we apply DNA barcodes to quantify and track phenotypic plasticity across hundreds of clones in a population of cancer cells exhibiting epithelial or mesenchymal differentiation phenotypes. We find that the epithelial-to-mesenchymal cell ratio is highly variable across the different clones in cancer cell populations, but remains stable for many generations within the progeny of any single clone-with a heritability of 0.89. To estimate the effects of combination therapies on phenotypically heterogeneous tumours, we generated quantitative simulations incorporating empirical data from our barcoding experiments. These analyses indicated that combination therapies which alternate between epithelial- and mesenchymal-specific treatments eventually select for clones with increased phenotypic plasticity. However, this selection could be minimized by increasing the frequency of alternation between treatments, identifying designs that may minimize selection for increased phenotypic plasticity. These findings establish new insights into phenotypic plasticity in cancer, and suggest design principles for optimizing the effectiveness of combination therapies for phenotypically heterogeneous tumours. © 2017 The Authors.

  16. Senescent intervertebral disc cells exhibit perturbed matrix homeostasis phenotype.

    Science.gov (United States)

    Ngo, Kevin; Patil, Prashanti; McGowan, Sara J; Niedernhofer, Laura J; Robbins, Paul D; Kang, James; Sowa, Gwendolyn; Vo, Nam

    2017-09-01

    Aging greatly increases the risk for intervertebral disc degeneration (IDD) as a result of proteoglycan loss due to reduced synthesis and enhanced degradation of the disc matrix proteoglycan (PG). How disc matrix PG homeostasis becomes perturbed with age is not known. The goal of this study is to determine whether cellular senescence is a source of this perturbation. We demonstrated that disc cellular senescence is dramatically increased in the DNA repair-deficient Ercc1(-/Δ) mouse model of human progeria. In these accelerated aging mice, increased disc cellular senescence is closely associated with the rapid loss of disc PG. We also directly examine PG homeostasis in oxidative damage-induced senescent human cells using an in vitro cell culture model system. Senescence of human disc cells treated with hydrogen peroxide was confirmed by growth arrest, senescence-associated β-galactosidase activity, γH2AX foci, and acquisition of senescence-associated secretory phenotype. Senescent human disc cells also exhibited perturbed matrix PG homeostasis as evidenced by their decreased capacity to synthesize new matrix PG and enhanced degradation of aggrecan, a major matrix PG. of the disc. Our in vivo and in vitro findings altogether suggest that disc cellular senescence is an important driver of PG matrix homeostatic perturbation and PG loss. Published by Elsevier B.V.

  17. Investigation of dentin hardness in roots exhibiting the butterfly effect.

    Science.gov (United States)

    Russell, Assil A; Chris He, Li Hong; Chandler, Nicholas P

    2014-06-01

    Most vertical root fractures occur in root canal treated teeth, and they usually run in a buccolingual direction. The butterfly effect is an optical phenomenon seen in some sections of tooth roots. The aim was to investigate the microhardness of dentin in mesiodistal and buccolingual cross sections of roots exhibiting the effect. Thirty extracted single-rooted teeth were allocated according to patient age: group 1, 15-24 years; group 2, 25-44 years; and group 3, 45 years and older. Roots were embedded in acrylic and cut into ten 1-mm-thick cross sections. Sections were viewed under a light microscope and coded (1 or 2) according to presence or absence of the butterfly effect. A root scored 20 when all levels featured the butterfly appearance. The 2 teeth with the highest score from each group and 2 control teeth with the minimum score (10) were selected. Two adjacent, consecutive cross sections were chosen from the middle of the roots. Vickers microhardness testing was carried out on the dentin walls. Mean hardness scores were highest mesiodistally (83.7 kgf/mm(2)) and lowest buccolingually (56.4 kgf/mm(2)), a significant difference (P = .028). This trend was found across all age groups. Root sections with the butterfly effect are harder mesiodistally. This might explain the high prevalence of vertical root fractures that run buccolingually. Copyright © 2014 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  18. Isolation and characterization of novel bacterial strains exhibiting ligninolytic potential

    Directory of Open Access Journals (Sweden)

    Bandounas Luaine

    2011-10-01

    Full Text Available Abstract Background To expand on the range of products which can be obtained from lignocellulosic biomass, the lignin component should be utilized as feedstock for value-added chemicals such as substituted aromatics, instead of being incinerated for heat and energy. Enzymes could provide an effective means for lignin depolymerization into products of interest. In this study, soil bacteria were isolated by enrichment on Kraft lignin and evaluated for their ligninolytic potential as a source of novel enzymes for waste lignin valorization. Results Based on 16S rRNA gene sequencing and phenotypic characterization, the organisms were identified as Pandoraea norimbergensis LD001, Pseudomonas sp LD002 and Bacillus sp LD003. The ligninolytic capability of each of these isolates was assessed by growth on high-molecular weight and low-molecular weight lignin fractions, utilization of lignin-associated aromatic monomers and degradation of ligninolytic indicator dyes. Pandoraea norimbergensis LD001 and Pseudomonas sp. LD002 exhibited best growth on lignin fractions, but limited dye-decolourizing capacity. Bacillus sp. LD003, however, showed least efficient growth on lignin fractions but extensive dye-decolourizing capacity, with a particular preference for the recalcitrant phenothiazine dye class (Azure B, Methylene Blue and Toluidene Blue O. Conclusions Bacillus sp. LD003 was selected as a promising source of novel types of ligninolytic enzymes. Our observations suggested that lignin mineralization and depolymerization are separate events which place additional challenges on the screening of ligninolytic microorganisms for specific ligninolytic enzymes.

  19. Coloboma hyperactive mutant exhibits delayed neurobehavioral developmental milestones.

    Science.gov (United States)

    Heyser, C J; Wilson, M C; Gold, L H

    1995-11-21

    The coloboma mutation (Cm) is a neutron-irradiation induced gene deletion located on the distal portion of mouse chromosome 2. This deletion region includes a gene encoding the synaptic vesicle docking fusion protein, synaptosomal-associated protein of 25 kDa (SNAP-25). The resulting mutation is semi-dominant with heterozygote mice exhibiting a triad of phenotypic abnormalities that comprise profound spontaneous hyperactivity, head bobbing and a prominent eye dysmorphology. Because the expression pattern of two SNAP-25 isoforms begins to change during the first postnatal week, neurobehavioral developmental milestones were examined in order to determine if the expression of the coloboma behavioral phenotype could be detected during this period of postnatal development. The early classification of coloboma mutant offspring may help to further describe the penetrance of this mutation as well as the contribution of developmental changes to the adult behavioral phenotype. The coloboma mutation resulted in delays in some tests of complex motor skills including righting reflex and bar holding. In addition, coloboma mutants were characterized by body weight differences (first appearance day 7) and hyperreactivity to touch (day 11) and head bobbing (day 14). These data demonstrate disruptions in the time course of attaining developmental milestones in coloboma mutants and provide further evidence supporting the hypotheses that alterations in Snap gene expression are associated with functional behavioral consequences in developing offspring.

  20. Green light for a permanent exhibition in the Globe

    CERN Multimedia

    2008-01-01

    A donation to the Foundation for the Globe of Science and Innovation by ROLEX S.A. marks the first step towards the planned expansion of the Globe’s infrastructure. The Globe: a CERN emblem.Visible from miles away by day and by night, the Globe, the wooden sphere offered to CERN by the Swiss Confederation in 2004, has become one of the symbols of the Organization. Since being opened to the public in September 2005, the Globe has served as a venue for lectures, exhibitions, press and VIP events and workshops for schoolchildren and as a stage for theatre performances on scientific themes. With a view to turning the Globe into a flagship venue for events for the general public, and for interactions between CERN and its public and private partners, two projects are planned for the near future. CERN is receiving support for these ventures from the Foundation for the Globe. Established at the end of 2007, the Foundation’s mission is to ...

  1. Bonobos and chimpanzees exhibit human-like framing effects.

    Science.gov (United States)

    Krupenye, Christopher; Rosati, Alexandra G; Hare, Brian

    2015-02-01

    Humans exhibit framing effects when making choices, appraising decisions involving losses differently from those involving gains. To directly test for the evolutionary origin of this bias, we examined decision-making in humans' closest living relatives: bonobos (Pan paniscus) and chimpanzees (Pan troglodytes). We presented the largest sample of non-humans to date (n = 40) with a simple task requiring minimal experience. Apes made choices between a 'framed' option that provided preferred food, and an alternative option that provided a constant amount of intermediately preferred food. In the gain condition, apes experienced a positive 'gain' event in which the framed option was initially presented as one piece of food but sometimes was augmented to two. In the loss condition, apes experienced a negative 'loss' event in which they initially saw two pieces but sometimes received only one. Both conditions provided equal pay-offs, but apes chose the framed option more often in the positive 'gain' frame. Moreover, male apes were more susceptible to framing than were females. These results suggest that some human economic biases are shared through common descent with other apes and highlight the importance of comparative work in understanding the origins of individual differences in human choice. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

  2. Human cervical spine ligaments exhibit fully nonlinear viscoelastic behavior.

    Science.gov (United States)

    Troyer, Kevin L; Puttlitz, Christian M

    2011-02-01

    Spinal ligaments provide stability and contribute to spinal motion patterns. These hydrated tissues exhibit time-dependent behavior during both static and dynamic loading regimes. Therefore, accurate viscoelastic characterization of these ligaments is requisite for development of computational analogues that model and predict time-dependent spine behavior. The development of accurate viscoelastic models must be preceded by rigorous, empirical evidence of linear viscoelastic, quasi-linear viscoelastic (QLV) or fully nonlinear viscoelastic behavior. This study utilized multiple physiological loading rates (frequencies) and strain amplitudes via cyclic loading and stress relaxation experiments in order to determine the viscoelastic behavior of the human lower cervical spine anterior longitudinal ligament, the posterior longitudinal ligament and the ligamentum flavum. The results indicated that the cyclic material properties of these ligaments were dependent on both strain amplitude and frequency. This strain amplitude-dependent behavior cannot be described using a linear viscoelastic formulation. Stress relaxation experiments at multiple strain magnitudes indicated that the shape of the relaxation curve was strongly dependent on strain magnitude, suggesting that a QLV formulation cannot adequately describe the comprehensive viscoelastic response of these ligaments. Therefore, a fully nonlinear viscoelastic formulation is requisite to model these lower cervical spine ligaments during activities of daily living. Copyright © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

  3. Short and long term measures of anxiety exhibit opposite results.

    Directory of Open Access Journals (Sweden)

    Ehud Fonio

    Full Text Available Animal models of human diseases of the central nervous system, generalized anxiety disorder included, are essential for the study of the brain-behavior interface and obligatory for drug development; yet, these models fail to yield new insights and efficacious drugs. By increasing testing duration hundredfold and arena size tenfold, and comparing the behavior of the common animal model to that of wild mice, we raise concerns that chronic anxiety might have been measured at the wrong time, for the wrong duration, and in the wrong animal. Furthermore, the mice start the experimental session with a short period of transient adaptation to the novel environment (habituation period and a long period reflecting the respective trait of the mice. Using common measures of anxiety reveals that mice exhibit opposite results during these periods suggesting that chronic anxiety should be measured during the post-habituation period. We recommend tools for measuring the transient period, and provide suggestions for characterizing the post habituation period.

  4. Aged chimpanzees exhibit pathologic hallmarks of Alzheimer's disease.

    Science.gov (United States)

    Edler, Melissa K; Sherwood, Chet C; Meindl, Richard S; Hopkins, William D; Ely, John J; Erwin, Joseph M; Mufson, Elliott J; Hof, Patrick R; Raghanti, Mary Ann

    2017-11-01

    Alzheimer's disease (AD) is a uniquely human brain disorder characterized by the accumulation of amyloid-beta protein (Aβ) into extracellular plaques, neurofibrillary tangles (NFT) made from intracellular, abnormally phosphorylated tau, and selective neuronal loss. We analyzed a large group of aged chimpanzees (n = 20, age 37-62 years) for evidence of Aβ and tau lesions in brain regions affected by AD in humans. Aβ was observed in plaques and blood vessels, and tau lesions were found in the form of pretangles, NFT, and tau-immunoreactive neuritic clusters. Aβ deposition was higher in vessels than in plaques and correlated with increases in tau lesions, suggesting that amyloid build-up in the brain's microvasculature precedes plaque formation in chimpanzees. Age was correlated to greater volumes of Aβ plaques and vessels. Tangle pathology was observed in individuals that exhibited plaques and moderate or severe cerebral amyloid angiopathy, a condition in which amyloid accumulates in the brain's vasculature. Amyloid and tau pathology in aged chimpanzees suggests these AD lesions are not specific to the human brain. Copyright © 2017 Elsevier Inc. All rights reserved.

  5. Spontaneous baroreflex sensitivity

    DEFF Research Database (Denmark)

    Barthel, Petra; Bauer, Axel; Müller, Alexander

    2012-01-01

    Low baroreflex sensitivity (BRS) indicates poor prognosis after acute myocardial infarction. Noninvasive BRS assessment is complicated by nonstationarities and noise in electrocardiogram and pressure signals. Phase-rectified signal averaging is a novel signal processing technology overcoming...

  6. MOVES sensitivity study

    Science.gov (United States)

    2012-01-01

    Purpose: : To determine ranking of important parameters and the overall sensitivity to values of variables in MOVES : To allow a greater understanding of the MOVES modeling process for users : Continued support by FHWA to transportation modeling comm...

  7. Adolescent but not adult rats exhibit ethanol-mediated appetitive second-order conditioning.

    Science.gov (United States)

    Pautassi, Ricardo Marcos; Myers, Mallory; Spear, Linda Patia; Molina, Juan Carlos; Spear, Norman E

    2008-11-01

    Adolescent rats are less sensitive to the sedative effects of ethanol than older animals. They also seem to perceive the reinforcing properties of ethanol. However, unlike neonates or infants, ethanol-mediated appetitive behavior is yet to be clearly shown in adolescents. Appetitive ethanol reinforcement was assessed in adolescent (postnatal day 33, P33) and adult rats (P71) through second-order conditioning (SOC). On P32 or P70, animals were intragastrically administered ethanol (0.5 or 2.0 g/kg) paired with intra-oral pulses of sucrose (CS(1), first-order conditioning phase). CS(1) delivery took place either 5-20 (early pairing) or 30-45 minutes (late pairing) following ethanol administration. The time interval between CS(1) exposure and ethanol administration was 240 minutes in unpaired controls. On P33 or P71, animals were presented the CS(1) (second-order conditioning phase) in a distinctive chamber (CS(2), second-order conditioning). Then they were tested for CS(2) preference. Early and late paired adolescents, but not adults, had greater preference for the CS(2) than controls, a result indicative of ontogenetic variation in ethanol-mediated reinforcement. During the CS(1)-CS(2) associative phase, paired adolescents given 2.0 g/kg ethanol wall-climbed more than controls. Blood and brain ethanol levels associated with the 0.5 and 2.0 g/kg doses at the onset of each conditioning phase did not differ substantially across age, with mean blood ethanol concentration of 38 and 112 mg%. These data indicate age-related differences between adolescent and adult rats in terms of sensitivity to ethanol's motivational effects. Adolescents exhibited high sensitivity for ethanol's appetitive effects. These animals also showed ethanol-mediated behavioral activation during the SOC phase. The SOC preparation provides a valuable conditioning model for assessing ethanol's motivational effects across ontogeny.

  8. Cobalt sensitization and dermatitis

    DEFF Research Database (Denmark)

    Thyssen, Jacob P

    2012-01-01

    : This clinical review article presents clinical and scientific data on cobalt sensitization and dermatitis. It is concluded that cobalt despite being a strong sensitizer and a prevalent contact allergen to come up on patch testing should be regarded as a very complex metal to test with. Exposure...... data together with clinical data from metal workers heavily exposed to cobalt suggest that patch-test reactions are sometimes false positive and that patch testers should carefully evaluate their clinical relevance....

  9. Visceral sensitivity testing.

    Science.gov (United States)

    Andresen, Viola

    2009-01-01

    Visceral hypersensitivity is regarded as an important factor in the pathogenesis of functional gastrointestinal disorders. Assessment of visceral sensitivity has several important aims: increasing the understanding of normal and abnormal visceral sensory mechanisms and participating sensory pathways, serving as diagnostic tool to detect patients with abnormal visceral sensitivity, and evaluating therapeutic interventions directed towards modification of visceral sensitivity. Current stimulation modes in sensitivity tests include mechanical distension by barostat or tensostat, nutrient drink or water load, chemical stimulation, e.g. acid provocation or capsaicin ingestion, electrical, or thermal stimulation. Multimodal probes incorporating several stimulation modes in one device have recently been developed. Assessment of visceral sensation can be based on subjective responses of conscious perception or on objective parameters such as visceromotoric responses or central sensory processing patterns. All methods face the challenge that visceral sensitivity may be influenced by a wide spectrum of different factors, including the test techniques themselves, and improved, preferably non-invasive sensitivity tests with a greater standardisation and a broader applicability are still needed.

  10. Photomechanical Energy Conversion of Photoresponsive Fibers Exhibiting Bending Behavior

    Directory of Open Access Journals (Sweden)

    Kazuya Nakata

    2012-01-01

    Full Text Available Photoresponsive fibers based on poly(acrylamide (PAA with methylene blue (MB dye were prepared. All semicircular fibers show bending towards the direction of the flat surface of the fiber when illuminated. The fibers recover their initial shape when the illumination stops. The fiber is heated upon illumination and cooled to room temperature once the illumination is stopped. The fiber also is sensitive to humidity, showing bending behavior towards the direction of the flat surface of the fiber upon changing the humidity. The mechanical energy of the PAA/MB fiber is approximately 0.6 mN for the bending direction when it is illuminated. A possible mechanism for the bending behavior is as follow: (1 the fiber is heated upon illumination because of the photothermal effect, (2 the fiber loses water molecules, (3 the fiber shrinks; bending towards the direction of the flat surface of the fiber occurs because of a difference in the shrinkage for the flat surface and the other side of the fiber. Finally, we demonstrated that a PP ball (1.5 mg can be moved by the mechanical energy produced by the changing shape of the fiber upon illumination.

  11. 7th IGRSM International Remote Sensing & GIS Conference and Exhibition

    Science.gov (United States)

    Shariff, Abdul Rashid Mohamed

    2014-06-01

    IGRSM This proceedings consists of the peer-reviewed papers from the 7th IGRSM International Conference and Exhibition on Remote Sensing & GIS (IGRSM 2014), which was held on 21-22 April 2014 at Berjaya Times Square Hotel, Kuala Lumpur, Malaysia. The conference, with the theme Geospatial Innovation for Nation Building was aimed at disseminating knowledge, and sharing expertise and experiences in geospatial sciences in all aspects of applications. It also aimed to build linkages between local and international professionals in this field with industries. Highlights of the conference included: Officiation by Y B Datuk Dr Abu Bakar bin Mohamad Diah, Deputy Minister of Minister of Science, Technology & Innovation Keynote presentations by: Associate Professor Dr Francis Harvey, Chair of the Geographic Information Science Commission at the International Geographical Union (IGU) and Director of U-Spatial, University of Minnesota, US: The Next Age of Discovery and a Future in a Post-GIS World. Professor Dr Naoshi Kondo, Bio-Sensing Engineering, University of Kyoto, Japan: Mobile Fruit Grading Machine for Precision Agriculture. Datuk Ir Hj Ahmad Jamalluddin bin Shaaban, Director-General, National Hydraulic Research Institute of Malaysia (NAHRIM), Malaysia: Remote Sensing & GIS in Climate Change Analyses. Oral and poster presentations from 69 speakers, from both Malaysia (35) and abroad (34), covering areas of water resources management, urban sprawl & social mobility, agriculture, land use/cover mapping, infrastructure planning, disaster management, technology trends, environmental monitoring, atmospheric/temperature monitoring, and space applications for the environment. Post-conference workshops on: Space Applications for Environment (SAFE), which was be organised by the Japan Aerospace Exploration Agency (JAXA) Global Positioning System (GPS) Receiver Evaluation Using GPS Simulation, which was be organised by the Science & Technology Research Institute for Defence

  12. Biologically active heteroarotinoids exhibiting anticancer activity and decreased toxicity.

    Science.gov (United States)

    Benbrook, D M; Madler, M M; Spruce, L W; Birckbichler, P J; Nelson, E C; Subramanian, S; Weerasekare, G M; Gale, J B; Patterson, M K; Wang, B; Wang, W; Lu, S; Rowland, T C; DiSivestro, P; Lindamood, C; Hill, D L; Berlin, K D

    1997-10-24

    A series of retinoids, containing heteroatoms in a cyclic ring and called heteroarotinoids, were synthesized, and their biological activity was evaluated using tissue culture lines that have measurable responses to trans-retinoic acid (t-RA). Transglutaminase (TGase) was assessed in the human erythroleukemia cell line (GMO6141A) as an indicator of differentiation and apoptosis. Proliferation was evaluated in a human cervical cell line, CC-1, which exhibits dose-dependent alterations in growth rate in response to treatment with trans-retinoic acid. Activation of nuclear retinoic acid receptors was determined in a reporter cell line established from CC-1. The reporter line, called CC-B, contains a reporter gene controlled by a retinoic acid responsive element (RARE) and a thymidine kinase (tk) promoter. Treatment of the CC-B line with the heteroarotinoids resulted in a dose-responsive and retinoid-dependent regulation of reporter gene expression. The heteroarotinoids exhibited activity in all assays and correlated in a statistically significant manner between assays. RARE transactivation activity in CC-B cells correlated with induction of TGase in GMO6141A (R = 0.96) and with a decrease in the growth rate of CC-1 cells (R = -0.90). The ability of the selected heteroarotinoids to induce differentiation, inhibit proliferation, and activate nuclear receptors demonstrates the chemotherapeutic potential of these agents. In view of the biological activity cited, an in vivo toxicity study was conducted on male B6D2F1 mice with three heteroarotinoids, namely 8 [(2E,4E,6E)-3,7-dimethyl-7-(1,2,3,4-tetrahydro-4,4-dimeth ylthiochroman-6-yl)-2,4,6-heptatrienoic acid], 10 [(2E,4E,6E)-3,7-dimethyl-7-(1,2,3,4-tetrahydro-4,4-dimeth ylchroman-6-yl)-2, 4,6-heptatrienoic acid], and 13 [(E)-p-[2-(4,4-dimethylchroman-6-yl)propenyl]benzoic acid]. The mice were used with gavage of heteroarotinoids in corn oil [0.1, 0.2, 0.4, or 0.8 mg/kg] and with 0.01 or 0.05 mg/kg of TTNPB (5) [(E)-4

  13. Belongings: Oral History, Objects and an Online Exhibition

    Directory of Open Access Journals (Sweden)

    Janis Wilton

    2009-11-01

    Full Text Available The New South Wales Migration Heritage Centre was established in 1998. Since 2003 its physical presence has been located within Sydney’s Powerhouse Museum and it has had the strategic brief to record the memories of ageing migrants before their stories are lost. The Centre is, however, a museum without a collection; a heritage authority without heritage sites; a cultural institution whose main presence is in cyberspace. Among its high profile projects is one entitled Objects through time and another Belongings. Both focus on the ways in which objects can convey aspects of the migration experience. Belongings, the focus of this article, presents the remembered experiences of people who migrated to Australia after World War II, and seeks to highlight significant features of their experiences through asking them to share their memories and to nominate and talk about significant objects. As a project it grew out of movable heritage policy work within state government agencies, and its initiators – John Petersen, Kylie Winkworth and Meredith Walker – were central players in this development. It was also inspired by the National Quilt Register of the Pioneer Women’s Hut at Tumbarumba. With its object-centred approach and accompanying edited interview transcripts, Belongings provides a focus for exploring the messages and emphases that emerge when oral history interviews concerned with migration have the specific brief to ask about material culture and its significance. Belongings also enables an exploration of the layering of those messages that emerges when object captions are located back in the context of the oral history interviews from which they were extracted. As a virtual exhibition, Belongings also provides the opportunity to consider the challenges for museums (virtual and real when they need to condense the richness of migrant oral histories and life stories to captioned objects that can be put on display.

  14. Arabidopsis mutant bik1 exhibits strong resistance to Plasmodiophora brassicae

    Directory of Open Access Journals (Sweden)

    Tao Chen

    2016-09-01

    Full Text Available Botrytis-induced kinase1 (BIK1, a receptor-like cytoplasmic kinase, plays an important role in resistance against pathogens and insects in Arabidopsis thaliana. However, it remains unknown whether BIK1 functions against Plasmodiophora brassicae, an obligate biotrophic protist that attacks cruciferous plants and induces gall formation on roots. Here, we investigated the potential roles of receptors FLS2, BAK1 and BIK1 in the infection of P. brassicae cruciferous plants. Wild-type plants, fls2 and bak1 mutants showed typical symptom on roots, and the galls were filled with large quantities of resting spores, while bik1 mutant plants exhibited strong resistance to P. brassicae. Compared with that of the wild-type plants, the root hair and cortical infection rate of bik1 mutant were significantly reduced by about 40-50%. A considerable portion of bik1 roots failed to form typical galls. Even if some small galls were formed, they were filled with multinucleate secondary plasmodia. The bik1 plants accumulated less reactive oxygen species (ROS at infected roots than other mutants and wild-type plants. Exogenous salicylic acid (SA treatment alleviated the clubroot symptoms in wild-type plants, and the expression of the SA signaling marker gene PR1 was significantly increased in bik1. Both sid2 (salicylic acid induction-deficient 2 and npr1-1 (non-expresser of PR genes that regulate systemic acquired resistance (SAR mutants showed increased susceptibility to P. brassicae compared with wild-type plants. These results suggest that the resistance of bik1 to P. brassicae is possibly mediated by SA inducible mechanisms enhance the resistance to clubroot disease.

  15. Primate vaginal microbiomes exhibit species specificity without universal Lactobacillus dominance.

    Science.gov (United States)

    Yildirim, Suleyman; Yeoman, Carl J; Janga, Sarath Chandra; Thomas, Susan M; Ho, Mengfei; Leigh, Steven R; White, Bryan A; Wilson, Brenda A; Stumpf, Rebecca M

    2014-12-01

    Bacterial communities colonizing the reproductive tracts of primates (including humans) impact the health, survival and fitness of the host, and thereby the evolution of the host species. Despite their importance, we currently have a poor understanding of primate microbiomes. The composition and structure of microbial communities vary considerably depending on the host and environmental factors. We conducted comparative analyses of the primate vaginal microbiome using pyrosequencing of the 16S rRNA genes of a phylogenetically broad range of primates to test for factors affecting the diversity of primate vaginal ecosystems. The nine primate species included: humans (Homo sapiens), yellow baboons (Papio cynocephalus), olive baboons (Papio anubis), lemurs (Propithecus diadema), howler monkeys (Alouatta pigra), red colobus (Piliocolobus rufomitratus), vervets (Chlorocebus aethiops), mangabeys (Cercocebus atys) and chimpanzees (Pan troglodytes). Our results indicated that all primates exhibited host-specific vaginal microbiota and that humans were distinct from other primates in both microbiome composition and diversity. In contrast to the gut microbiome, the vaginal microbiome showed limited congruence with host phylogeny, and neither captivity nor diet elicited substantial effects on the vaginal microbiomes of primates. Permutational multivariate analysis of variance and Wilcoxon tests revealed correlations among vaginal microbiota and host species-specific socioecological factors, particularly related to sexuality, including: female promiscuity, baculum length, gestation time, mating group size and neonatal birth weight. The proportion of unclassified taxa observed in nonhuman primate samples increased with phylogenetic distance from humans, indicative of the existence of previously unrecognized microbial taxa. These findings contribute to our understanding of host-microbe variation and coevolution, microbial biogeography, and disease risk, and have important

  16. Crohn enteritis-associated small bowel adenocarcinomas exhibit gastric differentiation.

    Science.gov (United States)

    Whitcomb, Emma; Liu, Xiuli; Xiao, Shu-Yuan

    2014-02-01

    Primary small bowel adenocarcinoma is rare. Although generally similar to colonic adenocarcinoma, some small bowel adenocarcinomas exhibit unique morphologic features, particularly those arising in association with Crohn disease. In this study, 15 sporadic small bowel adenocarcinomas and 11 Crohn enteritis-associated small bowel adenocarcinomas were examined for histology and immunohistochemical profile including cytokeratins (CK) 7 and 20, intestinal markers CDX2 and MUC2, and gastric epithelial markers MUC5AC and MUC6. We found that Crohn enteritis-associated small bowel adenocarcinomas frequently resemble gastric tubular adenocarcinoma histologically. In addition, when compared to sporadic small bowel adenocarcinoma, the former expressed MUC5AC and MUC6 with much higher frequency (82% vs. 7% and 73% vs. 0%, respectively). Ten of 11 Crohn enteritis-associated small bowel adenocarcinomas (91%) were positive for at least one gastric-type marker (MUC5AC or MUC6). Expression of CK7 was also more frequent in Crohn enteritis-associated small bowel adenocarcinoma (73% versus 27%) while expression of CK20 was less frequent (64% vs. 100%). There was no difference between sporadic and Crohn enteritis-associated small bowel adenocarcinoma in expression of CDX2 (100% vs. 91%) and MUC2 (93% vs. 73%). These observations suggest that there is a difference in the morphologic and immunohistochemical characteristics of sporadic versus Crohn enteritis-associated small bowel adenocarcinoma, particularly in their expression of gastric-type mucin. The findings also suggest that gastric differentiation in Crohn enteritis-associated small bowel adenocarcinoma is related to gastric metaplasia, a common phenomenon in Crohn disease. © 2014 Elsevier Inc. All rights reserved.

  17. An Interactive Exhibition about Animal Skeletons: Did the Visitors Learn Any Zoology?

    Science.gov (United States)

    Tunnicliffe, Sue Dale; Laterveer-de Beer, Manon

    2002-01-01

    Explores museum visitors' understanding of skeleton exhibits and whether such exhibits increase their understanding of the zoology displayed. The exhibition under study focused on the diversity of vertebrae skeletons which were arranged according to the mode of locomotion. (DDR)

  18. 75 FR 1009 - Culturally Significant Objects Imported for Exhibition Determinations: “Habsburg Treasures”

    Science.gov (United States)

    2010-01-07

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Culturally Significant Objects Imported for Exhibition Determinations: ``Habsburg Treasures'' SUMMARY: Notice... included in the exhibition ``Habsburg Treasures,'' imported from abroad for temporary exhibition within the...

  19. 75 FR 28095 - Culturally Significant Objects Imported for Exhibition Determinations: “Picasso Looks at Degas”

    Science.gov (United States)

    2010-05-19

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Culturally Significant Objects Imported for Exhibition Determinations: ``Picasso Looks at Degas'' SUMMARY... included in the exhibition ``Picasso Looks at Degas,'' imported from abroad for temporary exhibition within...

  20. The effects of amphetamine sensitization on conditioned inhibition during a Pavlovian-instrumental transfer task in rats

    Science.gov (United States)

    Shiflett, Michael W.; Riccie, Meaghan; DiMatteo, RoseMarie

    2013-01-01

    Rationale Psychostimulant sensitization heightens behavioral and motivational responses to reward-associated stimuli; however, its effects on stimuli associated with reward absence are less understood. Objectives We examined whether amphetamine sensitization alters performance during Pavlovian-instrumental transfer (PIT) to conditioned excitors and inhibitors. We further sought to characterize the effects of amphetamine sensitization on learning versus performance by exposing rats to amphetamine prior to Pavlovian training or between training and test. Methods Adult male Long Evans rats were given conditioned inhibition (A+/AX−) and Pavlovian (B+) training, followed by variable-interval instrumental conditioning. Rats were sensitized to d-amphetamine (2 mg/kg daily injections for seven days), or served as non-exposed controls. Rats were given a PIT test, in which they were presented with stimulus B alone or in compound with the conditioned inhibitor (BX). Results During the PIT test, control rats significantly reduced instrumental responding on BX trials (to approximately 50% of responding to B). Amphetamine sensitization prior to Pavlovian conditioning increased lever-pressing on BX trials and reduced lever-pressing on B trials compared to controls. Amphetamine sensitization between training and test increased lever-pressing on B and BX trials compared to controls. No effects of sensitization were observed on conditioned food-cup approach. Conclusions Amphetamine sensitization increases instrumental responding during PIT to a conditioned inhibitor, by enhancing excitation of conditioned stimuli and reducing inhibition of conditioned inhibitors. PMID:23715640

  1. Beyond equilibrium climate sensitivity

    Science.gov (United States)

    Knutti, Reto; Rugenstein, Maria A. A.; Hegerl, Gabriele C.

    2017-10-01

    Equilibrium climate sensitivity characterizes the Earth's long-term global temperature response to increased atmospheric CO2 concentration. It has reached almost iconic status as the single number that describes how severe climate change will be. The consensus on the 'likely' range for climate sensitivity of 1.5 °C to 4.5 °C today is the same as given by Jule Charney in 1979, but now it is based on quantitative evidence from across the climate system and throughout climate history. The quest to constrain climate sensitivity has revealed important insights into the timescales of the climate system response, natural variability and limitations in observations and climate models, but also concerns about the simple concepts underlying climate sensitivity and radiative forcing, which opens avenues to better understand and constrain the climate response to forcing. Estimates of the transient climate response are better constrained by observed warming and are more relevant for predicting warming over the next decades. Newer metrics relating global warming directly to the total emitted CO2 show that in order to keep warming to within 2 °C, future CO2 emissions have to remain strongly limited, irrespective of climate sensitivity being at the high or low end.

  2. Sensitizing properties of proteins

    DEFF Research Database (Denmark)

    Poulsen, Lars K.; Ladics, Gregory S; McClain, Scott

    2014-01-01

    scientists from academia, government, and industry participated in the symposium. Experts provided overviews on known mechanisms by which proteins in food may cause sensitization, discussed experimental models to predict protein sensitizing potential, and explored whether such experimental techniques may......The scope of allergy risk is diverse considering the myriad ways in which protein allergenicity is affected by physiochemical characteristics of proteins. The complexity created by the matrices of foods and the variability of the human immune system add additional challenges to understanding...... Allergenicity Technical Committee of the International Life Sciences Institute's Health and Environmental Sciences Institute, featured presentations on current methods, test systems, research trends, and unanswered questions in the field of protein sensitization. A diverse group of over 70 interdisciplinary...

  3. Allergic sensitization: screening methods

    DEFF Research Database (Denmark)

    Ladics, Gregory S.; Fry, Jeremy; Goodman, Richard

    2014-01-01

    Experimental in silico, in vitro, and rodent models for screening and predicting protein sensitizing potential are discussed, including whether there is evidence of new sensitizations and allergies since the introduction of genetically modified crops in 1996, the importance of linear versus...... conformational epitopes, and protein families that become allergens. Some common challenges for predicting protein sensitization are addressed: (a) exposure routes; (b) frequency and dose of exposure; (c) dose-response relationships; (d) role of digestion, food processing, and the food matrix; (e) role...... potential of a novel protein. However, they would be extremely useful in the discovery and research phases of understanding the mechanisms of food allergy development, and may prove fruitful to provide information regarding potential allergenicity risk assessment of future products on a case by case basis...

  4. Sensitizing properties of proteins

    DEFF Research Database (Denmark)

    Poulsen, Lars K.; Ladics, Gregory S; McClain, Scott

    2014-01-01

    The scope of allergy risk is diverse considering the myriad ways in which protein allergenicity is affected by physiochemical characteristics of proteins. The complexity created by the matrices of foods and the variability of the human immune system add additional challenges to understanding...... the relationship between sensitization potential and allergy disease. To address these and other issues, an April 2012 international symposium was held in Prague, Czech Republic, to review and discuss the state-of-the-science of sensitizing properties of protein allergens. The symposium, organized by the Protein...... Allergenicity Technical Committee of the International Life Sciences Institute's Health and Environmental Sciences Institute, featured presentations on current methods, test systems, research trends, and unanswered questions in the field of protein sensitization. A diverse group of over 70 interdisciplinary...

  5. Environment construction and bottleneck breakthrough in the improvement of wisdom exhibition

    Science.gov (United States)

    Zhang, Jiankang

    2017-08-01

    Wisdom exhibition is an inexorable trend in convention and exhibition industry in China. Information technology must be utilized by exhibition industry to achieve intelligent application and wisdom management, breaking the limitation of time as well as space, which raise the quality of exhibition service and level of operation to a totally new standard. Accordingly, exhibition industry should optimize mobile internet, a fundamental technology platform, during the advancing process of wisdom exhibition and consummate the combination among three plates including wisdom connection of information, wisdom exhibition environment and wisdom application of technology. Besides, the industry should realize the wisdom of external environment including wisdom of exhibition city, exhibition place, exhibition resource deal etc and break through bottle-neck in construction of wisdom exhibition industry, which includes construction of big data center, development of Mobile Internet application platform, promotion of information construction, innovative design of application scenarios.

  6. Developments in sensitivity theory

    Energy Technology Data Exchange (ETDEWEB)

    Cacuci, D.G.; Greenspan, E.; Marable, J.H.; Williams, M.L.

    1980-01-01

    A review of recent developments in sensitivity theory is presented with an emphasis on (a) extensions to new areas such as thermal hydraulics, reactor depletion, multi-constraint and extrema problems, and (b) recent mathematical refinements to and extensions of the basic theory. The diverse new areas of application are discussed from a unified theoretical viewpoint based on nonlinear functional analysis. Several new applications of sensitivity theory are presented for problems in constrained reactor physics calculations, irradiation experiment analysis, reactor burnup calculations, and transient thermal-hydraulic analysis. Future directions of the research are suggested.

  7. Metal Sensitivity in Children

    Directory of Open Access Journals (Sweden)

    S D Chaudhary

    1989-01-01

    Full Text Available One hundred children were patch tested with 5% nickel sulphate, 0.5% potassium dichromate, 5% cobalt chloride and pure petrolatum. Seventeen children (11 having eczematous and 6 having non-eczematous dermatoses showed positive patch test reactions to one or more metals, chromium (13%, nickel (8% and cobalt (1%. The incidence of metal sensitivity was highger (32.5% in the older children (8-14 years as compared to the younger children 7 years of age (2.66%. The female children had a higher incidence of sensitivity as compared to the male children.

  8. Deletion of Metabotropic Glutamate Receptors 2 and 3 (mGlu2 & mGlu3 in Mice Disrupts Sleep and Wheel-Running Activity, and Increases the Sensitivity of the Circadian System to Light.

    Directory of Open Access Journals (Sweden)

    David Pritchett

    Full Text Available Sleep and/or circadian rhythm disruption (SCRD is seen in up to 80% of schizophrenia patients. The co-morbidity of schizophrenia and SCRD may in part stem from dysfunction in common brain mechanisms, which include the glutamate system, and in particular, the group II metabotropic glutamate receptors mGlu2 and mGlu3 (encoded by the genes Grm2 and Grm3. These receptors are relevant to the pathophysiology and potential treatment of schizophrenia, and have also been implicated in sleep and circadian function. In the present study, we characterised the sleep and circadian rhythms of Grm2/3 double knockout (Grm2/3-/- mice, to provide further evidence for the involvement of group II metabotropic glutamate receptors in the regulation of sleep and circadian rhythms. We report several novel findings. Firstly, Grm2/3-/- mice demonstrated a decrease in immobility-determined sleep time and an increase in immobility-determined sleep fragmentation. Secondly, Grm2/3-/- mice showed heightened sensitivity to the circadian effects of light, manifested as increased period lengthening in constant light, and greater phase delays in response to nocturnal light pulses. Greater light-induced phase delays were also exhibited by wildtype C57Bl/6J mice following administration of the mGlu2/3 negative allosteric modulator RO4432717. These results confirm the involvement of group II metabotropic glutamate receptors in photic entrainment and sleep regulation pathways. Finally, the diurnal wheel-running rhythms of Grm2/3-/- mice were perturbed under a standard light/dark cycle, but their diurnal rest-activity rhythms were unaltered in cages lacking running wheels, as determined with passive infrared motion detectors. Hence, when assessing the diurnal rest-activity rhythms of mice, the choice of assay can have a major bearing on the results obtained.

  9. Deletion of Metabotropic Glutamate Receptors 2 and 3 (mGlu2 & mGlu3) in Mice Disrupts Sleep and Wheel-Running Activity, and Increases the Sensitivity of the Circadian System to Light.

    Science.gov (United States)

    Pritchett, David; Jagannath, Aarti; Brown, Laurence A; Tam, Shu K E; Hasan, Sibah; Gatti, Silvia; Harrison, Paul J; Bannerman, David M; Foster, Russell G; Peirson, Stuart N

    2015-01-01

    Sleep and/or circadian rhythm disruption (SCRD) is seen in up to 80% of schizophrenia patients. The co-morbidity of schizophrenia and SCRD may in part stem from dysfunction in common brain mechanisms, which include the glutamate system, and in particular, the group II metabotropic glutamate receptors mGlu2 and mGlu3 (encoded by the genes Grm2 and Grm3). These receptors are relevant to the pathophysiology and potential treatment of schizophrenia, and have also been implicated in sleep and circadian function. In the present study, we characterised the sleep and circadian rhythms of Grm2/3 double knockout (Grm2/3-/-) mice, to provide further evidence for the involvement of group II metabotropic glutamate receptors in the regulation of sleep and circadian rhythms. We report several novel findings. Firstly, Grm2/3-/- mice demonstrated a decrease in immobility-determined sleep time and an increase in immobility-determined sleep fragmentation. Secondly, Grm2/3-/- mice showed heightened sensitivity to the circadian effects of light, manifested as increased period lengthening in constant light, and greater phase delays in response to nocturnal light pulses. Greater light-induced phase delays were also exhibited by wildtype C57Bl/6J mice following administration of the mGlu2/3 negative allosteric modulator RO4432717. These results confirm the involvement of group II metabotropic glutamate receptors in photic entrainment and sleep regulation pathways. Finally, the diurnal wheel-running rhythms of Grm2/3-/- mice were perturbed under a standard light/dark cycle, but their diurnal rest-activity rhythms were unaltered in cages lacking running wheels, as determined with passive infrared motion detectors. Hence, when assessing the diurnal rest-activity rhythms of mice, the choice of assay can have a major bearing on the results obtained.

  10. Binaural sensitivity changes between cortical on and off responses

    OpenAIRE

    Hartley, Douglas E. H.; Dahmen, Johannes C.; King, Andrew J; Schnupp, Jan W.H

    2011-01-01

    Neurons exhibiting on and off responses with different frequency tuning have previously been described in the primary auditory cortex (A1) of anesthetized and awake animals, but it is unknown whether other tuning properties, including sensitivity to binaural localization cues, also differ between on and off responses. We measured the sensitivity of A1 neurons in anesthetized ferrets to 1) interaural level differences (ILDs), using unmodulated broadband noise with varying ILDs and average bina...

  11. pH-induced quaternary assembly of Vitreoscilla hemoglobin: the monomer exhibits better peroxidase activity.

    Science.gov (United States)

    Li, Wei; Zhang, Yubin; Xu, Haoran; Wu, Lei; Cao, Yufeng; Zhao, Haifeng; Li, Zhengqiang

    2013-10-01

    pH-dependent (pH6.0-8.0) quaternary structural changes of ferric Vitreoscilla hemoglobin (VHb) have been investigated using dynamic light scattering. The VHb exhibits a monomeric state under neutral conditions at pH7.0, while the protein forms distinct homodimeric species at pH6.0 and 8.0, respectively. The dissociation constant obtained using the Bio-Layer Interferometry technology indicates that, at pH7.0, the monomer-monomer dissociation of VHb is about 6-fold or 5-fold higher (KD=6.34μM) compared with that at slightly acidic pH (KD=1.05μM) or slightly alkaline pH (KD=1.22μM). The pH-dependent absorption spectra demonstrate that the heme microenvironment of VHb is sensitive to the changes of pH value. The maximum absorption band of heme group of VHb shifts from 402nm to 407nm when pH changes from 6.0 to 8.0. In addition, the fluorescence emission spectra of VHb, taken at excitation wavelength of 295nm, suggest that the single Trp122 fluorescence quantum yields in VHb are decreased due to the formation of the homodimeric species. However, the circular dichroism spectra data display that the secondary structures of VHb are little affected by pH transitions. The pH-dependent peroxidase activity of VHb was also investigated in this study. The optimum pH for VHb using 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) as substrate is 7.0, which implies that the monomer state of VHb would exhibit better peroxidase activity than the homodimeric species of VHb at pH6.0 and 8.0. © 2013.

  12. Binaural sensitivity changes between cortical on and off responses.

    Science.gov (United States)

    Hartley, Douglas E H; Dahmen, Johannes C; King, Andrew J; Schnupp, Jan W H

    2011-07-01

    Neurons exhibiting on and off responses with different frequency tuning have previously been described in the primary auditory cortex (A1) of anesthetized and awake animals, but it is unknown whether other tuning properties, including sensitivity to binaural localization cues, also differ between on and off responses. We measured the sensitivity of A1 neurons in anesthetized ferrets to 1) interaural level differences (ILDs), using unmodulated broadband noise with varying ILDs and average binaural levels, and 2) interaural time delays (ITDs), using sinusoidally amplitude-modulated broadband noise with varying envelope ITDs. We also assessed fine-structure ITD sensitivity and frequency tuning, using pure-tone stimuli. Neurons most commonly responded to stimulus onset only, but purely off responses and on-off responses were also recorded. Of the units exhibiting significant binaural sensitivity nearly one-quarter showed binaural sensitivity in both on and off responses, but in almost all (∼97%) of these units the binaural tuning of the on responses differed significantly from that seen in the off responses. Moreover, averaged, normalized ILD and ITD tuning curves calculated from all units showing significant sensitivity to binaural cues indicated that on and off responses displayed different sensitivity patterns across the population. A principal component analysis of ITD response functions suggested a continuous cortical distribution of binaural sensitivity, rather than discrete response classes. Rather than reflecting a release from inhibition without any functional significance, we propose that binaural off responses may be important to cortical encoding of sound-source location.

  13. Methanol leaves extract Hibiscus micranthus Linn exhibited antibacterial and wound healing activities.

    Science.gov (United States)

    Begashaw, Berhan; Mishra, Bharat; Tsegaw, Asegedech; Shewamene, Zewdneh

    2017-06-26

    Infectious diseases are the most common causes of morbidity and mortality in developing countries. Wound and wound infections are also major health problem. Nowadays, medicinal plants play a major role in treatment of infectious diseases and wound healing and they are easily available and more affordable as compared to synthetic compounds. The aim of this study is therefore, to investigate the antibacterial and wound healing activities of 80% methanol extract of Hibiscus micranthus leaves using disc diffusion methods and rat excision model respectively. In vitro antibacterial screening was carried out against S. aureus, S.pneumoniae, S. pyogenes, E. coli, P. aeruginosa, K. pneumoniae and P. mirabilis bacterial strains using disc-well diffusion assay. Would healing activity was done in rats divided into four groups each consisting of six animals. Group I was served as a negative control (ointment base), Group II served as a positive control Nitrofurazone (NFZ 0.2% ointment), Groups III and IV was treated 5 and 10% extracts respectively. The acute oral toxicity test and skin sensitivity test were also performed before conducting the actual study. The extract was analyzed for secondary metabolites using standard methods. Preliminary phytochemical screening have revealed the presence of alkaloids, flavonoids, saponins, tannins, steroids, phenols, diterpines, anthraquinones and the absence of glycosides, terpinoides and triterpines. Based on acute oral toxicity test the extract was found to be safe up to a dose of 2 g/kg. In addition, acute dermal toxicity test indicated no sign of skin irritation. The leaves extract exhibited varying degrees of sensitivity with zones of inhibition ranging from 14.00 ± 0.333 (S.pyogenes) to 22.67 ± 1.202 mm (S.aureus). It was found that S. aureus and S. pneumonia (p healing study, the 5 and 10% w/w extract exhibited significant wound contraction rate of 99.30% and 99.13% as compared to NFZ ointment and simple ointment base

  14. How sensitizing is chlorocresol?

    DEFF Research Database (Denmark)

    Andersen, Klaus Ejner; Hamann, K

    1984-01-01

    % in pet. showed 11 reactions among 1462 patients tested, but none were explainable and reproducible during re-tests and provocative use tests, indicating that the GPMT overestimated the sensitization potential. The results from guinea pig allergy tests cannot stand alone but have to be validated by other...

  15. Multiple chemical sensitivity

    DEFF Research Database (Denmark)

    Tran, Marie Thi Dao; Arendt-Nielsen, Lars; Kupers, Ron

    2013-01-01

    contributing to the clinical manifestations. PURPOSE: To use quantitative sensory testing (QST) to study central hyperexcitability and multiple aspects of central sensory processing in MCS patients without comorbid overlapping disorders and to compare the results with those among matched controls. METHODS: 15...... patients without comorbid, overlapping disorders, suggesting facilitated central sensitization in MCS....

  16. High-Sensitivity Spectrophotometry.

    Science.gov (United States)

    Harris, T. D.

    1982-01-01

    Selected high-sensitivity spectrophotometric methods are examined, and comparisons are made of their relative strengths and weaknesses and the circumstances for which each can best be applied. Methods include long path cells, noise reduction, laser intracavity absorption, thermocouple calorimetry, photoacoustic methods, and thermo-optical methods.…

  17. UNITEC SENS-IT

    Science.gov (United States)

    The UniTec Sens-It is a small gas-sensing device that can measure volatile organic compounds (VOCs). This sensor is used to measure VOCs in applications such as urban air quality, roadside pollution, and (solid waste) landfill monitoring. This operating procedure explains what yo...

  18. Sexuality Sensitive Schooling

    Science.gov (United States)

    McCaughtry, Nate; Dillon, Suzanna; Jones, Elizabeth; Smigell, Sara

    2005-01-01

    American schools, especially their physical education and sport programs, provide some of the most hostile social geographies in all of society for gay youth. With the aim of transforming schools toward more democratic and sexuality sensitive institutions, this paper reviews the literature on sexuality and education. In the review, three themes,…

  19. Multiple Chemical Sensitivity

    DEFF Research Database (Denmark)

    Junge, Anne Gram

    Et voksende antal mennesker i Danmark oplever at være overfølsomme over for dufte og kemikalier. Imidlertid er den tilskrevne diagnose Multiple Chemical Sensitivity (MCS) ikke medicinsk anerkendt i Danmark pga. mangel på organiske og patofysiologisk basis for symptomerne. Dette speciale bygger på...

  20. 77 FR 52783 - Culturally Significant Objects Imported for Exhibition Determinations: “Federico Barocci...

    Science.gov (United States)

    2012-08-30

    ... Culturally Significant Objects Imported for Exhibition Determinations: ``Federico Barocci: Renaissance Master... determine that the objects to be included in the exhibition ``Federico Barocci: Renaissance Master... that the exhibition or display of the exhibit objects at the Saint Louis Art Museum, St. Louis...